From 0598bc69a6136ce8811b88a12f19d894f4efd299 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Fri, 9 Aug 2019 20:49:55 +0700 Subject: [PATCH 01/23] Moved unnecessary stuff to 'develop' branch. --- .gitmodules | 6 - build/StbImageWriteSharp.sln | 28 - generation/Sichem | 1 - generation/StbImageWriteSharp.Generator.sln | 47 - .../StbImageWriteSharp.Generator/App.config | 6 - .../StbImageWriteSharp.Generator/Program.cs | 183 - .../Properties/AssemblyInfo.cs | 36 - .../StbImageWriteSharp.Generator.csproj | 70 - .../stb_image_write.h | 1619 ---- tests/Stb.Native/AssemblyInfo.cpp | 38 - tests/Stb.Native/ReadMe.txt | 38 - tests/Stb.Native/Stb.Native.cpp | 6 - tests/Stb.Native/Stb.Native.h | 137 - tests/Stb.Native/Stb.Native.vcxproj | 104 - tests/Stb.Native/Stb.Native.vcxproj.filters | 52 - tests/Stb.Native/Stdafx.cpp | 5 - tests/Stb.Native/Stdafx.h | 7 - tests/Stb.Native/app.ico | Bin 11001 -> 0 bytes tests/Stb.Native/app.rc | Bin 2546 -> 0 bytes tests/Stb.Native/resource.h | 3 - tests/Stb.Native/stb_image.h | 7186 ----------------- tests/StbImageWriteSharp.Testing/Program.cs | 249 - .../Properties/AssemblyInfo.cs | 36 - .../StbImageWriteSharp.Testing.csproj | 65 - .../packages.config | 4 - tests/TestImages | 1 - 26 files changed, 9927 deletions(-) delete mode 100644 .gitmodules delete mode 160000 generation/Sichem delete mode 100644 generation/StbImageWriteSharp.Generator.sln delete mode 100644 generation/StbImageWriteSharp.Generator/App.config delete mode 100644 generation/StbImageWriteSharp.Generator/Program.cs delete mode 100644 generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs delete mode 100644 generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj delete mode 100644 generation/StbImageWriteSharp.Generator/stb_image_write.h delete mode 100644 tests/Stb.Native/AssemblyInfo.cpp delete mode 100644 tests/Stb.Native/ReadMe.txt delete mode 100644 tests/Stb.Native/Stb.Native.cpp delete mode 100644 tests/Stb.Native/Stb.Native.h delete mode 100644 tests/Stb.Native/Stb.Native.vcxproj delete mode 100644 tests/Stb.Native/Stb.Native.vcxproj.filters delete mode 100644 tests/Stb.Native/Stdafx.cpp delete mode 100644 tests/Stb.Native/Stdafx.h delete mode 100644 tests/Stb.Native/app.ico delete mode 100644 tests/Stb.Native/app.rc delete mode 100644 tests/Stb.Native/resource.h delete mode 100644 tests/Stb.Native/stb_image.h delete mode 100644 tests/StbImageWriteSharp.Testing/Program.cs delete mode 100644 tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs delete mode 100644 tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj delete mode 100644 tests/StbImageWriteSharp.Testing/packages.config delete mode 160000 tests/TestImages diff --git a/.gitmodules b/.gitmodules deleted file mode 100644 index af6ed95..0000000 --- a/.gitmodules +++ /dev/null @@ -1,6 +0,0 @@ -[submodule "generation/Sichem"] - path = generation/Sichem - url = https://github.com/rds1983/Sichem.git -[submodule "tests/TestImages"] - path = tests/TestImages - url = https://github.com/StbSharp/TestImages diff --git a/build/StbImageWriteSharp.sln b/build/StbImageWriteSharp.sln index 8039999..3357690 100644 --- a/build/StbImageWriteSharp.sln +++ b/build/StbImageWriteSharp.sln @@ -3,14 +3,6 @@ Microsoft Visual Studio Solution File, Format Version 12.00 # Visual Studio 15 VisualStudioVersion = 15.0.28010.2036 MinimumVisualStudioVersion = 10.0.40219.1 -Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Samples", "Samples", "{14A355A8-A827-4D09-B3A4-4C7A0EF983EC}" -EndProject -Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Testing", "Testing", "{519A6B9C-7460-47E9-9030-F30D86D08DA8}" -EndProject -Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Stb.Native", "..\tests\Stb.Native\Stb.Native.vcxproj", "{EA7B8121-942A-437D-85D5-E4D55B94E88A}" -EndProject -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StbImageWriteSharp.Testing", "..\tests\StbImageWriteSharp.Testing\StbImageWriteSharp.Testing.csproj", "{4295DB99-F5C5-4D33-84DA-02AA2CA141B6}" -EndProject Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "StbImageWriteSharp", "..\src\StbImageWriteSharp\StbImageWriteSharp.csproj", "{E674856C-C482-4A80-AD30-37C58EA38967}" EndProject Global @@ -21,22 +13,6 @@ Global Release|x86 = Release|x86 EndGlobalSection GlobalSection(ProjectConfigurationPlatforms) = postSolution - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|Any CPU.ActiveCfg = Debug|Win32 - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|Any CPU.Build.0 = Debug|Win32 - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|x86.ActiveCfg = Debug|Win32 - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|x86.Build.0 = Debug|Win32 - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|Any CPU.ActiveCfg = Release|Win32 - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|Any CPU.Build.0 = Release|Win32 - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|x86.ActiveCfg = Release|Win32 - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|x86.Build.0 = Release|Win32 - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.Build.0 = Debug|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|x86.ActiveCfg = Debug|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|x86.Build.0 = Debug|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.ActiveCfg = Release|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.Build.0 = Release|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|x86.ActiveCfg = Release|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|x86.Build.0 = Release|Any CPU {E674856C-C482-4A80-AD30-37C58EA38967}.Debug|Any CPU.ActiveCfg = Debug|Any CPU {E674856C-C482-4A80-AD30-37C58EA38967}.Debug|Any CPU.Build.0 = Debug|Any CPU {E674856C-C482-4A80-AD30-37C58EA38967}.Debug|x86.ActiveCfg = Debug|Any CPU @@ -49,10 +25,6 @@ Global GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE EndGlobalSection - GlobalSection(NestedProjects) = preSolution - {EA7B8121-942A-437D-85D5-E4D55B94E88A} = {519A6B9C-7460-47E9-9030-F30D86D08DA8} - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6} = {519A6B9C-7460-47E9-9030-F30D86D08DA8} - EndGlobalSection GlobalSection(ExtensibilityGlobals) = postSolution SolutionGuid = {C9C812E7-F89A-4B6E-8F9D-981D5F8BBAB3} EndGlobalSection diff --git a/generation/Sichem b/generation/Sichem deleted file mode 160000 index 9900396..0000000 --- a/generation/Sichem +++ /dev/null @@ -1 +0,0 @@ -Subproject commit 990039672f76e1b82d2b15bfa36d1bb0091c2fcd diff --git a/generation/StbImageWriteSharp.Generator.sln b/generation/StbImageWriteSharp.Generator.sln deleted file mode 100644 index 41a3e57..0000000 --- a/generation/StbImageWriteSharp.Generator.sln +++ /dev/null @@ -1,47 +0,0 @@ - -Microsoft Visual Studio Solution File, Format Version 12.00 -# Visual Studio 15 -VisualStudioVersion = 15.0.28010.2036 -MinimumVisualStudioVersion = 10.0.40219.1 -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Sichem", "Sichem\Sichem\Sichem.csproj", "{71352218-91C4-490E-A650-AB17C48D0300}" -EndProject -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StbImageWriteSharp.Generator", "StbImageWriteSharp.Generator\StbImageWriteSharp.Generator.csproj", "{2F372A46-2B31-49ED-BEAA-B7D6E72CD983}" -EndProject -Global - GlobalSection(SolutionConfigurationPlatforms) = preSolution - Debug|Any CPU = Debug|Any CPU - Debug|Mixed Platforms = Debug|Mixed Platforms - Debug|x64 = Debug|x64 - Release|Any CPU = Release|Any CPU - Release|Mixed Platforms = Release|Mixed Platforms - Release|x64 = Release|x64 - EndGlobalSection - GlobalSection(ProjectConfigurationPlatforms) = postSolution - {71352218-91C4-490E-A650-AB17C48D0300}.Debug|Any CPU.ActiveCfg = Debug|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Debug|Mixed Platforms.ActiveCfg = Debug|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Debug|Mixed Platforms.Build.0 = Debug|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Debug|x64.ActiveCfg = Debug|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Debug|x64.Build.0 = Debug|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Release|Any CPU.ActiveCfg = Release|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Release|Mixed Platforms.ActiveCfg = Release|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Release|Mixed Platforms.Build.0 = Release|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Release|x64.ActiveCfg = Release|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Release|x64.Build.0 = Release|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Any CPU.ActiveCfg = Debug|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Mixed Platforms.ActiveCfg = Debug|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Mixed Platforms.Build.0 = Debug|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|x64.ActiveCfg = Debug|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|x64.Build.0 = Debug|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|Any CPU.ActiveCfg = Release|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|Mixed Platforms.ActiveCfg = Release|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|Mixed Platforms.Build.0 = Release|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|x64.ActiveCfg = Release|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|x64.Build.0 = Release|x64 - EndGlobalSection - GlobalSection(SolutionProperties) = preSolution - HideSolutionNode = FALSE - EndGlobalSection - GlobalSection(ExtensibilityGlobals) = postSolution - SolutionGuid = {ACF4E34C-5E6B-44ED-AA80-A1C43BA55B85} - EndGlobalSection -EndGlobal diff --git a/generation/StbImageWriteSharp.Generator/App.config b/generation/StbImageWriteSharp.Generator/App.config deleted file mode 100644 index 8e15646..0000000 --- a/generation/StbImageWriteSharp.Generator/App.config +++ /dev/null @@ -1,6 +0,0 @@ - - - - - - \ No newline at end of file diff --git a/generation/StbImageWriteSharp.Generator/Program.cs b/generation/StbImageWriteSharp.Generator/Program.cs deleted file mode 100644 index a5de54b..0000000 --- a/generation/StbImageWriteSharp.Generator/Program.cs +++ /dev/null @@ -1,183 +0,0 @@ -using System; -using System.IO; -using Sichem; - -namespace StbSharp.StbImage.Generator -{ - class Program - { - static void Process() - { - var parameters = new ConversionParameters - { - InputPath = @"stb_image_write.h", - ConversionMode = ConversionMode.SingleString, - Defines = new[] - { - "STBI_WRITE_NO_STDIO", - "STB_IMAGE_WRITE_IMPLEMENTATION", - "STB_IMAGE_WRITE_STATIC" - }, - Namespace = "StbImageWriteSharp", - Class = "StbImageWrite", - SkipStructs = new[] - { - "stbi__write_context" - }, - SkipGlobalVariables = new[] - { - "stbi_write_tga_with_rle" - }, - SkipFunctions = new[] - { - "stbi__start_write_callbacks", - "stbiw__writefv", - "stbiw__writef", - "stbiw__outfile", - "stbi_write_bmp_to_func", - "stbi_write_tga_to_func", - "stbi_write_hdr_to_func", - "stbi_write_png_to_func", - "stbi_write_jpg_to_func", - "stbi_write_hdr_core", - }, - Classes = new[] - { - "stbi__write_context" - }, - GlobalArrays = new[] - { - "lengthc", - "lengtheb", - "distc", - "disteb", - "crc_table", - "stbiw__jpg_ZigZag", - "std_dc_luminance_nrcodes", - "std_dc_luminance_values", - "std_ac_luminance_nrcodes", - "std_ac_luminance_values", - "std_dc_chrominance_nrcodes", - "std_dc_chrominance_values", - "std_ac_chrominance_nrcodes", - "std_ac_chrominance_values", - "std_dc_chrominance_nrcodes", - "std_dc_chrominance_values", - "YDC_HT", - "UVDC_HT", - "YAC_HT", - "UVAC_HT", - "YQT", - "UVQT", - "aasf", - "head0", - "head2" - } - }; - - var cp = new ClangParser(); - - cp.Process(parameters); - var data = cp.StringResult; - - // Post processing - Logger.Info("Post processing..."); - - data = Utility.ReplaceNativeCalls(data); - - data = data.Replace("((void *)(0))", "null"); - data = data.Replace("(void *)(0)", "null"); - - data = data.Replace("][", ", "); - - data = data.Replace("'J', 'F', 'I', 'F'", - "(byte)'J', (byte)'F', (byte)'I', (byte)'F'"); - - data = data.Replace("int has_alpha = (int)(((comp) == (2)) || ((comp) == (4)));", - "int has_alpha = (((comp) == (2)) || ((comp) == (4)))?1:0;"); - data = data.Replace("*arr?", - "*arr != null?"); - data = data.Replace("sizeof(int)* * 2", - "sizeof(int) * 2"); - data = data.Replace("(int)(sizeof((*(data))))", - "sizeof(byte)"); - data = data.Replace("(int)(sizeof((*(_out_))))", - "sizeof(byte)"); - data = data.Replace("(int)(sizeof((*(hash_table[h]))))", - "sizeof(byte*)"); - data = data.Replace("sizeof((hash_table[h, 0]))", - "sizeof(byte*)"); - data = data.Replace("(byte***)(malloc((ulong)(16384 * sizeof(char**)))))", - "(byte***)(malloc((ulong)(16384 * sizeof(byte**))))"); - data = data.Replace("(hlist)?", - "(hlist != null)?"); - data = data.Replace("(hash_table[i])?", - "(hash_table[i] != null)?"); - - data = data.Replace("ushort* bs", "ushort bs0, ushort bs1"); - data = data.Replace("bs[0]", "bs0"); - data = data.Replace("bs[1]", "bs1"); - - data = data.Replace("ushort** HTDC, ushort** HTAC", "ushort[,] HTDC, ushort[,] HTAC"); - data = data.Replace("HTDC[0]", "HTDC[0, 0], HTDC[0, 1]"); - data = data.Replace("HTDC[bits[1]]", "HTDC[bits[1], 0], HTDC[bits[1], 1]"); - data = data.Replace("HTDC[bits[1]]", "HTDC[bits[1], 0], HTDC[bits[1], 1]"); - data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits);", - "stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]);"); - data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB);", - "stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB[0], EOB[1]);"); - data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes);", - "stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes[0], M16zeroes[1]);"); - data = data.Replace("stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits);", - "stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits[0], fillBits[1]);"); - data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1]]);", - "stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1], 0], HTAC[(nrzeroes << 4) + bits[1], 1]);"); - - data = data.Replace("s.func(s.context, (void *)(head0), (int)(sizeof((head0))));", - "fixed (byte* h = head0) { s.func(s.context, h, head0.Length); }"); - data = data.Replace("(int)(sizeof((YTable)))", "64"); - data = data.Replace("(int)(sizeof((UVTable)))", "64"); - data = data.Replace("(int)(sizeof((head1)))", "24"); - data = data.Replace("s.func(s.context, (void *)(std_dc_luminance_nrcodes + 1), (int)(sizeof((std_dc_luminance_nrcodes)) - 1));", - "fixed (byte* d = &std_dc_luminance_nrcodes[1]) { s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); }"); - data = data.Replace("s.func(s.context, (void *)(std_dc_luminance_values), (int)(sizeof((std_dc_luminance_values))));", - "fixed (byte* d = std_dc_luminance_values) { s.func(s.context, d, std_dc_chrominance_values.Length); }"); - - data = data.Replace("s.func(s.context, (void *)(std_ac_luminance_nrcodes + 1), (int)(sizeof((std_ac_luminance_nrcodes)) - 1));", - "fixed (byte* a = &std_ac_luminance_nrcodes[1]) { s.func(s.context, a, std_ac_luminance_nrcodes.Length - 1); }"); - data = data.Replace("s.func(s.context, (void *)(std_ac_luminance_values), (int)(sizeof((std_ac_luminance_values))));", - "fixed (byte* d = std_ac_luminance_values) { s.func(s.context, d, std_ac_chrominance_values.Length); }"); - - data = data.Replace("s.func(s.context, (void *)(std_dc_chrominance_nrcodes + 1), (int)(sizeof((std_dc_chrominance_nrcodes)) - 1));", - "fixed (byte* d = &std_dc_chrominance_nrcodes[1]) { s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); }"); - data = data.Replace("s.func(s.context, (void *)(std_dc_chrominance_values), (int)(sizeof((std_dc_chrominance_values))));", - "fixed (byte* d = std_dc_chrominance_values) { s.func(s.context, d, std_dc_chrominance_values.Length); }"); - - data = data.Replace("s.func(s.context, (void *)(std_ac_chrominance_nrcodes + 1), (int)(sizeof((std_ac_chrominance_nrcodes)) - 1));", - "fixed (byte* a = &std_ac_chrominance_nrcodes[1]) { s.func(s.context, a, std_ac_chrominance_nrcodes.Length - 1); }"); - data = data.Replace("s.func(s.context, (void *)(std_ac_chrominance_values), (int)(sizeof((std_ac_chrominance_values))));", - "fixed (byte* d = std_ac_chrominance_values) { s.func(s.context, d, std_ac_chrominance_values.Length); }"); - - data = data.Replace("s.func(s.context, (void *)(head2), (int)(sizeof((head2))));", - "fixed (byte* h = head2) { s.func(s.context, h, head2.Length); }"); - - File.WriteAllText(@"..\..\..\..\..\src\StbImageWriteSharp\StbImageWrite.Generated.cs", data); - } - - static void Main(string[] args) - { - try - { - Process(); - } - catch (Exception ex) - { - Console.WriteLine(ex.Message); - Console.WriteLine(ex.StackTrace); - } - - Console.WriteLine("Finished. Press any key to quit."); - Console.ReadKey(); - } - } -} \ No newline at end of file diff --git a/generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs b/generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs deleted file mode 100644 index 48cf2be..0000000 --- a/generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs +++ /dev/null @@ -1,36 +0,0 @@ -using System.Reflection; -using System.Runtime.CompilerServices; -using System.Runtime.InteropServices; - -// General Information about an assembly is controlled through the following -// set of attributes. Change these attribute values to modify the information -// associated with an assembly. -[assembly: AssemblyTitle("Generator")] -[assembly: AssemblyDescription("")] -[assembly: AssemblyConfiguration("")] -[assembly: AssemblyCompany("")] -[assembly: AssemblyProduct("Generator")] -[assembly: AssemblyCopyright("Copyright © 2016")] -[assembly: AssemblyTrademark("")] -[assembly: AssemblyCulture("")] - -// Setting ComVisible to false makes the types in this assembly not visible -// to COM components. If you need to access a type in this assembly from -// COM, set the ComVisible attribute to true on that type. -[assembly: ComVisible(false)] - -// The following GUID is for the ID of the typelib if this project is exposed to COM -[assembly: Guid("f1343b90-bd64-48d3-9cd2-e1d954dc3da4")] - -// Version information for an assembly consists of the following four values: -// -// Major Version -// Minor Version -// Build Number -// Revision -// -// You can specify all the values or you can default the Build and Revision Numbers -// by using the '*' as shown below: -// [assembly: AssemblyVersion("1.0.*")] -[assembly: AssemblyVersion("1.0.0.0")] -[assembly: AssemblyFileVersion("1.0.0.0")] diff --git a/generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj b/generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj deleted file mode 100644 index cfa0499..0000000 --- a/generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj +++ /dev/null @@ -1,70 +0,0 @@ - - - - - Debug - AnyCPU - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983} - Exe - Properties - StbImageWrite.Generator - StbImageWrite.Generator - v4.5 - 512 - ccc2377f - - - true - bin\x64\Debug\ - DEBUG;TRACE - full - x64 - prompt - MinimumRecommendedRules.ruleset - - - bin\x64\Release\ - TRACE - true - pdbonly - x64 - prompt - MinimumRecommendedRules.ruleset - true - - - - - - - - - - - - - - - - - - - - PreserveNewest - - - - - {dcf9ccd1-4beb-46ef-96c0-386fd3f7c230} - Sichem - - - - - \ No newline at end of file diff --git a/generation/StbImageWriteSharp.Generator/stb_image_write.h b/generation/StbImageWriteSharp.Generator/stb_image_write.h deleted file mode 100644 index 71db70b..0000000 --- a/generation/StbImageWriteSharp.Generator/stb_image_write.h +++ /dev/null @@ -1,1619 +0,0 @@ -/* stb_image_write - v1.13 - public domain - http://nothings.org/stb/stb_image_write.h - writes out PNG/BMP/TGA/JPEG/HDR images to C stdio - Sean Barrett 2010-2015 - no warranty implied; use at your own risk - - Before #including, - - #define STB_IMAGE_WRITE_IMPLEMENTATION - - in the file that you want to have the implementation. - - Will probably not work correctly with strict-aliasing optimizations. - -ABOUT: - - This header file is a library for writing images to C stdio or a callback. - - The PNG output is not optimal; it is 20-50% larger than the file - written by a decent optimizing implementation; though providing a custom - zlib compress function (see STBIW_ZLIB_COMPRESS) can mitigate that. - This library is designed for source code compactness and simplicity, - not optimal image file size or run-time performance. - -BUILDING: - - You can #define STBIW_ASSERT(x) before the #include to avoid using assert.h. - You can #define STBIW_MALLOC(), STBIW_REALLOC(), and STBIW_FREE() to replace - malloc,realloc,free. - You can #define STBIW_MEMMOVE() to replace memmove() - You can #define STBIW_ZLIB_COMPRESS to use a custom zlib-style compress function - for PNG compression (instead of the builtin one), it must have the following signature: - unsigned char * my_compress(unsigned char *data, int data_len, int *out_len, int quality); - The returned data will be freed with STBIW_FREE() (free() by default), - so it must be heap allocated with STBIW_MALLOC() (malloc() by default), - -UNICODE: - - If compiling for Windows and you wish to use Unicode filenames, compile - with - #define STBIW_WINDOWS_UTF8 - and pass utf8-encoded filenames. Call stbiw_convert_wchar_to_utf8 to convert - Windows wchar_t filenames to utf8. - -USAGE: - - There are five functions, one for each image file format: - - int stbi_write_png(char const *filename, int w, int h, int comp, const void *data, int stride_in_bytes); - int stbi_write_bmp(char const *filename, int w, int h, int comp, const void *data); - int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data); - int stbi_write_jpg(char const *filename, int w, int h, int comp, const void *data, int quality); - int stbi_write_hdr(char const *filename, int w, int h, int comp, const float *data); - - void stbi_flip_vertically_on_write(int flag); // flag is non-zero to flip data vertically - - There are also five equivalent functions that use an arbitrary write function. You are - expected to open/close your file-equivalent before and after calling these: - - int stbi_write_png_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data, int stride_in_bytes); - int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); - int stbi_write_tga_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); - int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const float *data); - int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int quality); - - where the callback is: - void stbi_write_func(void *context, void *data, int size); - - You can configure it with these global variables: - int stbi_write_tga_with_rle; // defaults to true; set to 0 to disable RLE - int stbi_write_png_compression_level; // defaults to 8; set to higher for more compression - int stbi_write_force_png_filter; // defaults to -1; set to 0..5 to force a filter mode - - - You can define STBI_WRITE_NO_STDIO to disable the file variant of these - functions, so the library will not use stdio.h at all. However, this will - also disable HDR writing, because it requires stdio for formatted output. - - Each function returns 0 on failure and non-0 on success. - - The functions create an image file defined by the parameters. The image - is a rectangle of pixels stored from left-to-right, top-to-bottom. - Each pixel contains 'comp' channels of data stored interleaved with 8-bits - per channel, in the following order: 1=Y, 2=YA, 3=RGB, 4=RGBA. (Y is - monochrome color.) The rectangle is 'w' pixels wide and 'h' pixels tall. - The *data pointer points to the first byte of the top-left-most pixel. - For PNG, "stride_in_bytes" is the distance in bytes from the first byte of - a row of pixels to the first byte of the next row of pixels. - - PNG creates output files with the same number of components as the input. - The BMP format expands Y to RGB in the file format and does not - output alpha. - - PNG supports writing rectangles of data even when the bytes storing rows of - data are not consecutive in memory (e.g. sub-rectangles of a larger image), - by supplying the stride between the beginning of adjacent rows. The other - formats do not. (Thus you cannot write a native-format BMP through the BMP - writer, both because it is in BGR order and because it may have padding - at the end of the line.) - - PNG allows you to set the deflate compression level by setting the global - variable 'stbi_write_png_compression_level' (it defaults to 8). - - HDR expects linear float data. Since the format is always 32-bit rgb(e) - data, alpha (if provided) is discarded, and for monochrome data it is - replicated across all three channels. - - TGA supports RLE or non-RLE compressed data. To use non-RLE-compressed - data, set the global variable 'stbi_write_tga_with_rle' to 0. - - JPEG does ignore alpha channels in input data; quality is between 1 and 100. - Higher quality looks better but results in a bigger image. - JPEG baseline (no JPEG progressive). - -CREDITS: - - - Sean Barrett - PNG/BMP/TGA - Baldur Karlsson - HDR - Jean-Sebastien Guay - TGA monochrome - Tim Kelsey - misc enhancements - Alan Hickman - TGA RLE - Emmanuel Julien - initial file IO callback implementation - Jon Olick - original jo_jpeg.cpp code - Daniel Gibson - integrate JPEG, allow external zlib - Aarni Koskela - allow choosing PNG filter - - bugfixes: - github:Chribba - Guillaume Chereau - github:jry2 - github:romigrou - Sergio Gonzalez - Jonas Karlsson - Filip Wasil - Thatcher Ulrich - github:poppolopoppo - Patrick Boettcher - github:xeekworx - Cap Petschulat - Simon Rodriguez - Ivan Tikhonov - github:ignotion - Adam Schackart - -LICENSE - - See end of file for license information. - -*/ - -#ifndef INCLUDE_STB_IMAGE_WRITE_H -#define INCLUDE_STB_IMAGE_WRITE_H - -#include - -// if STB_IMAGE_WRITE_STATIC causes problems, try defining STBIWDEF to 'inline' or 'static inline' -#ifndef STBIWDEF -#ifdef STB_IMAGE_WRITE_STATIC -#define STBIWDEF static -#else -#ifdef __cplusplus -#define STBIWDEF extern "C" -#else -#define STBIWDEF extern -#endif -#endif -#endif - -#ifndef STB_IMAGE_WRITE_STATIC // C++ forbids static forward declarations -extern int stbi_write_tga_with_rle; -extern int stbi_write_png_compression_level; -extern int stbi_write_force_png_filter; -#endif - -#ifndef STBI_WRITE_NO_STDIO -STBIWDEF int stbi_write_png(char const *filename, int w, int h, int comp, const void *data, int stride_in_bytes); -STBIWDEF int stbi_write_bmp(char const *filename, int w, int h, int comp, const void *data); -STBIWDEF int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data); -STBIWDEF int stbi_write_hdr(char const *filename, int w, int h, int comp, const float *data); -STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const void *data, int quality); - -#ifdef STBI_WINDOWS_UTF8 -STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input); -#endif -#endif - -typedef void stbi_write_func(void *context, void *data, int size); - -STBIWDEF int stbi_write_png_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data, int stride_in_bytes); -STBIWDEF int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); -STBIWDEF int stbi_write_tga_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); -STBIWDEF int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const float *data); -STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int quality); - -STBIWDEF void stbi_flip_vertically_on_write(int flip_boolean); - -#endif//INCLUDE_STB_IMAGE_WRITE_H - -#ifdef STB_IMAGE_WRITE_IMPLEMENTATION - -#ifdef _WIN32 - #ifndef _CRT_SECURE_NO_WARNINGS - #define _CRT_SECURE_NO_WARNINGS - #endif - #ifndef _CRT_NONSTDC_NO_DEPRECATE - #define _CRT_NONSTDC_NO_DEPRECATE - #endif -#endif - -#ifndef STBI_WRITE_NO_STDIO -#include -#endif // STBI_WRITE_NO_STDIO - -#include -#include -#include -#include - -#if defined(STBIW_MALLOC) && defined(STBIW_FREE) && (defined(STBIW_REALLOC) || defined(STBIW_REALLOC_SIZED)) -// ok -#elif !defined(STBIW_MALLOC) && !defined(STBIW_FREE) && !defined(STBIW_REALLOC) && !defined(STBIW_REALLOC_SIZED) -// ok -#else -#error "Must define all or none of STBIW_MALLOC, STBIW_FREE, and STBIW_REALLOC (or STBIW_REALLOC_SIZED)." -#endif - -#ifndef STBIW_MALLOC -#define STBIW_MALLOC(sz) malloc(sz) -#define STBIW_REALLOC(p,newsz) realloc(p,newsz) -#define STBIW_FREE(p) free(p) -#endif - -#ifndef STBIW_REALLOC_SIZED -#define STBIW_REALLOC_SIZED(p,oldsz,newsz) STBIW_REALLOC(p,newsz) -#endif - - -#ifndef STBIW_MEMMOVE -#define STBIW_MEMMOVE(a,b,sz) memmove(a,b,sz) -#endif - - -#ifndef STBIW_ASSERT -#include -#define STBIW_ASSERT(x) -#endif - -#define STBIW_UCHAR(x) (unsigned char) ((x) & 0xff) - -#ifdef STB_IMAGE_WRITE_STATIC -static int stbi__flip_vertically_on_write=0; -static int stbi_write_png_compression_level = 8; -static int stbi_write_tga_with_rle = 1; -static int stbi_write_force_png_filter = -1; -#else -int stbi_write_png_compression_level = 8; -int stbi__flip_vertically_on_write=0; -int stbi_write_tga_with_rle = 1; -int stbi_write_force_png_filter = -1; -#endif - -STBIWDEF void stbi_flip_vertically_on_write(int flag) -{ - stbi__flip_vertically_on_write = flag; -} - -typedef struct -{ - stbi_write_func *func; - void *context; -} stbi__write_context; - -// initialize a callback-based context -static void stbi__start_write_callbacks(stbi__write_context *s, stbi_write_func *c, void *context) -{ - s->func = c; - s->context = context; -} - -#ifndef STBI_WRITE_NO_STDIO - -static void stbi__stdio_write(void *context, void *data, int size) -{ - fwrite(data,1,size,(FILE*) context); -} - -#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) -#ifdef __cplusplus -#define STBIW_EXTERN extern "C" -#else -#define STBIW_EXTERN extern -#endif -STBIW_EXTERN __declspec(dllimport) int __stdcall MultiByteToWideChar(unsigned int cp, unsigned long flags, const char *str, int cbmb, wchar_t *widestr, int cchwide); -STBIW_EXTERN __declspec(dllimport) int __stdcall WideCharToMultiByte(unsigned int cp, unsigned long flags, const wchar_t *widestr, int cchwide, char *str, int cbmb, const char *defchar, int *used_default); - -STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input) -{ - return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, (int) bufferlen, NULL, NULL); -} -#endif - -static FILE *stbiw__fopen(char const *filename, char const *mode) -{ - FILE *f; -#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) - wchar_t wMode[64]; - wchar_t wFilename[1024]; - if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, filename, -1, wFilename, sizeof(wFilename))) - return 0; - - if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, mode, -1, wMode, sizeof(wMode))) - return 0; - -#if _MSC_VER >= 1400 - if (0 != _wfopen_s(&f, wFilename, wMode)) - f = 0; -#else - f = _wfopen(wFilename, wMode); -#endif - -#elif defined(_MSC_VER) && _MSC_VER >= 1400 - if (0 != fopen_s(&f, filename, mode)) - f=0; -#else - f = fopen(filename, mode); -#endif - return f; -} - -static int stbi__start_write_file(stbi__write_context *s, const char *filename) -{ - FILE *f = stbiw__fopen(filename, "wb"); - stbi__start_write_callbacks(s, stbi__stdio_write, (void *) f); - return f != NULL; -} - -static void stbi__end_write_file(stbi__write_context *s) -{ - fclose((FILE *)s->context); -} - -#endif // !STBI_WRITE_NO_STDIO - -typedef unsigned int stbiw_uint32; -typedef int stb_image_write_test[sizeof(stbiw_uint32)==4 ? 1 : -1]; - -static void stbiw__writefv(stbi__write_context *s, const char *fmt, va_list v) -{ - while (*fmt) { - switch (*fmt++) { - case ' ': break; - case '1': { unsigned char x = STBIW_UCHAR(va_arg(v, int)); - s->func(s->context,&x,1); - break; } - case '2': { int x = va_arg(v,int); - unsigned char b[2]; - b[0] = STBIW_UCHAR(x); - b[1] = STBIW_UCHAR(x>>8); - s->func(s->context,b,2); - break; } - case '4': { stbiw_uint32 x = va_arg(v,int); - unsigned char b[4]; - b[0]=STBIW_UCHAR(x); - b[1]=STBIW_UCHAR(x>>8); - b[2]=STBIW_UCHAR(x>>16); - b[3]=STBIW_UCHAR(x>>24); - s->func(s->context,b,4); - break; } - default: - STBIW_ASSERT(0); - return; - } - } -} - -static void stbiw__writef(stbi__write_context *s, const char *fmt, ...) -{ - va_list v; - va_start(v, fmt); - stbiw__writefv(s, fmt, v); - va_end(v); -} - -static void stbiw__putc(stbi__write_context *s, unsigned char c) -{ - s->func(s->context, &c, 1); -} - -static void stbiw__write3(stbi__write_context *s, unsigned char a, unsigned char b, unsigned char c) -{ - unsigned char arr[3]; - arr[0] = a; arr[1] = b; arr[2] = c; - s->func(s->context, arr, 3); -} - -static void stbiw__write_pixel(stbi__write_context *s, int rgb_dir, int comp, int write_alpha, int expand_mono, unsigned char *d) -{ - unsigned char bg[3] = { 255, 0, 255}, px[3]; - int k; - - if (write_alpha < 0) - s->func(s->context, &d[comp - 1], 1); - - switch (comp) { - case 2: // 2 pixels = mono + alpha, alpha is written separately, so same as 1-channel case - case 1: - if (expand_mono) - stbiw__write3(s, d[0], d[0], d[0]); // monochrome bmp - else - s->func(s->context, d, 1); // monochrome TGA - break; - case 3: - case 4: - if (comp == 4 && !write_alpha) { - // composite against pink background - for (k = 0; k < 3; ++k) - px[k] = bg[k] + ((d[k] - bg[k]) * d[3]) / 255; - stbiw__write3(s, px[1 - rgb_dir], px[1], px[1 + rgb_dir]); - break; - } - /* FALLTHROUGH */ - stbiw__write3(s, d[1 - rgb_dir], d[1], d[1 + rgb_dir]); - break; - } - if (write_alpha > 0) - s->func(s->context, &d[comp - 1], 1); -} - -static void stbiw__write_pixels(stbi__write_context *s, int rgb_dir, int vdir, int x, int y, int comp, void *data, int write_alpha, int scanline_pad, int expand_mono) -{ - stbiw_uint32 zero = 0; - int i,j, j_end; - - if (y <= 0) - return; - - if (stbi__flip_vertically_on_write) - vdir *= -1; - - if (vdir < 0) { - j_end = -1; j = y-1; - } else { - j_end = y; j = 0; - } - - for (; j != j_end; j += vdir) { - for (i=0; i < x; ++i) { - unsigned char *d = (unsigned char *) data + (j*x+i)*comp; - stbiw__write_pixel(s, rgb_dir, comp, write_alpha, expand_mono, d); - } - s->func(s->context, &zero, scanline_pad); - } -} - -static int stbiw__outfile(stbi__write_context *s, int rgb_dir, int vdir, int x, int y, int comp, int expand_mono, void *data, int alpha, int pad, const char *fmt, ...) -{ - if (y < 0 || x < 0) { - return 0; - } else { - va_list v; - va_start(v, fmt); - stbiw__writefv(s, fmt, v); - va_end(v); - stbiw__write_pixels(s,rgb_dir,vdir,x,y,comp,data,alpha,pad, expand_mono); - return 1; - } -} - -static int stbi_write_bmp_core(stbi__write_context *s, int x, int y, int comp, const void *data) -{ - int pad = (-x*3) & 3; - return stbiw__outfile(s,-1,-1,x,y,comp,1,(void *) data,0,pad, - "11 4 22 4" "4 44 22 444444", - 'B', 'M', 14+40+(x*3+pad)*y, 0,0, 14+40, // file header - 40, x,y, 1,24, 0,0,0,0,0,0); // bitmap header -} - -STBIWDEF int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data) -{ - stbi__write_context s; - stbi__start_write_callbacks(&s, func, context); - return stbi_write_bmp_core(&s, x, y, comp, data); -} - -#ifndef STBI_WRITE_NO_STDIO -STBIWDEF int stbi_write_bmp(char const *filename, int x, int y, int comp, const void *data) -{ - stbi__write_context s; - if (stbi__start_write_file(&s,filename)) { - int r = stbi_write_bmp_core(&s, x, y, comp, data); - stbi__end_write_file(&s); - return r; - } else - return 0; -} -#endif //!STBI_WRITE_NO_STDIO - -static int stbi_write_tga_core(stbi__write_context *s, int x, int y, int comp, void *data) -{ - int has_alpha = (comp == 2 || comp == 4); - int colorbytes = has_alpha ? comp-1 : comp; - int format = colorbytes < 2 ? 3 : 2; // 3 color channels (RGB/RGBA) = 2, 1 color channel (Y/YA) = 3 - - if (y < 0 || x < 0) - return 0; - - if (!stbi_write_tga_with_rle) { - return stbiw__outfile(s, -1, -1, x, y, comp, 0, (void *) data, has_alpha, 0, - "111 221 2222 11", 0, 0, format, 0, 0, 0, 0, 0, x, y, (colorbytes + has_alpha) * 8, has_alpha * 8); - } else { - int i,j,k; - int jend, jdir; - - stbiw__writef(s, "111 221 2222 11", 0,0,format+8, 0,0,0, 0,0,x,y, (colorbytes + has_alpha) * 8, has_alpha * 8); - - if (stbi__flip_vertically_on_write) { - j = 0; - jend = y; - jdir = 1; - } else { - j = y-1; - jend = -1; - jdir = -1; - } - for (; j != jend; j += jdir) { - unsigned char *row = (unsigned char *) data + j * x * comp; - int len; - - for (i = 0; i < x; i += len) { - unsigned char *begin = row + i * comp; - int diff = 1; - len = 1; - - if (i < x - 1) { - ++len; - diff = memcmp(begin, row + (i + 1) * comp, comp); - if (diff) { - const unsigned char *prev = begin; - for (k = i + 2; k < x && len < 128; ++k) { - if (memcmp(prev, row + k * comp, comp)) { - prev += comp; - ++len; - } else { - --len; - break; - } - } - } else { - for (k = i + 2; k < x && len < 128; ++k) { - if (!memcmp(begin, row + k * comp, comp)) { - ++len; - } else { - break; - } - } - } - } - - if (diff) { - unsigned char header = STBIW_UCHAR(len - 1); - s->func(s->context, &header, 1); - for (k = 0; k < len; ++k) { - stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin + k * comp); - } - } else { - unsigned char header = STBIW_UCHAR(len - 129); - s->func(s->context, &header, 1); - stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin); - } - } - } - } - return 1; -} - -STBIWDEF int stbi_write_tga_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data) -{ - stbi__write_context s; - stbi__start_write_callbacks(&s, func, context); - return stbi_write_tga_core(&s, x, y, comp, (void *) data); -} - -#ifndef STBI_WRITE_NO_STDIO -STBIWDEF int stbi_write_tga(char const *filename, int x, int y, int comp, const void *data) -{ - stbi__write_context s; - if (stbi__start_write_file(&s,filename)) { - int r = stbi_write_tga_core(&s, x, y, comp, (void *) data); - stbi__end_write_file(&s); - return r; - } else - return 0; -} -#endif - -// ************************************************************************************************* -// Radiance RGBE HDR writer -// by Baldur Karlsson - -#define stbiw__max(a, b) ((a) > (b) ? (a) : (b)) - -static void stbiw__linear_to_rgbe(unsigned char *rgbe, float *linear) -{ - int exponent; - float maxcomp = stbiw__max(linear[0], stbiw__max(linear[1], linear[2])); - - if (maxcomp < 1e-32f) { - rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0; - } else { - float normalize = (float) frexp(maxcomp, &exponent) * 256.0f/maxcomp; - - rgbe[0] = (unsigned char)(linear[0] * normalize); - rgbe[1] = (unsigned char)(linear[1] * normalize); - rgbe[2] = (unsigned char)(linear[2] * normalize); - rgbe[3] = (unsigned char)(exponent + 128); - } -} - -static void stbiw__write_run_data(stbi__write_context *s, int length, unsigned char databyte) -{ - unsigned char lengthbyte = STBIW_UCHAR(length+128); - STBIW_ASSERT(length+128 <= 255); - s->func(s->context, &lengthbyte, 1); - s->func(s->context, &databyte, 1); -} - -static void stbiw__write_dump_data(stbi__write_context *s, int length, unsigned char *data) -{ - unsigned char lengthbyte = STBIW_UCHAR(length); - STBIW_ASSERT(length <= 128); // inconsistent with spec but consistent with official code - s->func(s->context, &lengthbyte, 1); - s->func(s->context, data, length); -} - -static void stbiw__write_hdr_scanline(stbi__write_context *s, int width, int ncomp, unsigned char *scratch, float *scanline) -{ - unsigned char scanlineheader[4] = { 2, 2, 0, 0 }; - unsigned char rgbe[4]; - float linear[3]; - int x; - - scanlineheader[2] = (width&0xff00)>>8; - scanlineheader[3] = (width&0x00ff); - - /* skip RLE for images too small or large */ - if (width < 8 || width >= 32768) { - for (x=0; x < width; x++) { - switch (ncomp) { - case 4: /* fallthrough */ - case 3: linear[2] = scanline[x*ncomp + 2]; - linear[1] = scanline[x*ncomp + 1]; - linear[0] = scanline[x*ncomp + 0]; - break; - default: - linear[0] = linear[1] = linear[2] = scanline[x*ncomp + 0]; - break; - } - stbiw__linear_to_rgbe(rgbe, linear); - s->func(s->context, rgbe, 4); - } - } else { - int c,r; - /* encode into scratch buffer */ - for (x=0; x < width; x++) { - switch(ncomp) { - case 4: /* fallthrough */ - case 3: linear[2] = scanline[x*ncomp + 2]; - linear[1] = scanline[x*ncomp + 1]; - linear[0] = scanline[x*ncomp + 0]; - break; - default: - linear[0] = linear[1] = linear[2] = scanline[x*ncomp + 0]; - break; - } - stbiw__linear_to_rgbe(rgbe, linear); - scratch[x + width*0] = rgbe[0]; - scratch[x + width*1] = rgbe[1]; - scratch[x + width*2] = rgbe[2]; - scratch[x + width*3] = rgbe[3]; - } - - s->func(s->context, scanlineheader, 4); - - /* RLE each component separately */ - for (c=0; c < 4; c++) { - unsigned char *comp = &scratch[width*c]; - - x = 0; - while (x < width) { - // find first run - r = x; - while (r+2 < width) { - if (comp[r] == comp[r+1] && comp[r] == comp[r+2]) - break; - ++r; - } - if (r+2 >= width) - r = width; - // dump up to first run - while (x < r) { - int len = r-x; - if (len > 128) len = 128; - stbiw__write_dump_data(s, len, &comp[x]); - x += len; - } - // if there's a run, output it - if (r+2 < width) { // same test as what we break out of in search loop, so only true if we break'd - // find next byte after run - while (r < width && comp[r] == comp[x]) - ++r; - // output run up to r - while (x < r) { - int len = r-x; - if (len > 127) len = 127; - stbiw__write_run_data(s, len, comp[x]); - x += len; - } - } - } - } - } -} - -static int stbi_write_hdr_core(stbi__write_context *s, int x, int y, int comp, float *data) -{ - if (y <= 0 || x <= 0 || data == NULL) - return 0; - else { - // Each component is stored separately. Allocate scratch space for full output scanline. - unsigned char *scratch = (unsigned char *) STBIW_MALLOC(x*4); - int i, len; - char buffer[128]; - char header[] = "#?RADIANCE\n# Written by stb_image_write.h\nFORMAT=32-bit_rle_rgbe\n"; - s->func(s->context, header, sizeof(header)-1); - -#ifdef __STDC_WANT_SECURE_LIB__ - len = sprintf_s(buffer, sizeof(buffer), "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x); -#else - len = sprintf(buffer, "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x); -#endif - s->func(s->context, buffer, len); - - for(i=0; i < y; i++) - stbiw__write_hdr_scanline(s, x, comp, scratch, data + comp*x*(stbi__flip_vertically_on_write ? y-1-i : i)); - STBIW_FREE(scratch); - return 1; - } -} - -STBIWDEF int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const float *data) -{ - stbi__write_context s; - stbi__start_write_callbacks(&s, func, context); - return stbi_write_hdr_core(&s, x, y, comp, (float *) data); -} - -#ifndef STBI_WRITE_NO_STDIO -STBIWDEF int stbi_write_hdr(char const *filename, int x, int y, int comp, const float *data) -{ - stbi__write_context s; - if (stbi__start_write_file(&s,filename)) { - int r = stbi_write_hdr_core(&s, x, y, comp, (float *) data); - stbi__end_write_file(&s); - return r; - } else - return 0; -} -#endif // STBI_WRITE_NO_STDIO - - -////////////////////////////////////////////////////////////////////////////// -// -// PNG writer -// - -#ifndef STBIW_ZLIB_COMPRESS -// stretchy buffer; stbiw__sbpush() == vector<>::push_back() -- stbiw__sbcount() == vector<>::size() -#define stbiw__sbraw(a) ((int *) (a) - 2) -#define stbiw__sbm(a) stbiw__sbraw(a)[0] -#define stbiw__sbn(a) stbiw__sbraw(a)[1] - -#define stbiw__sbneedgrow(a,n) ((a)==0 || stbiw__sbn(a)+n >= stbiw__sbm(a)) -#define stbiw__sbmaybegrow(a,n) if(stbiw__sbneedgrow(a,(n))) { stbiw__sbgrow(a,n); } -#define stbiw__sbgrow(a,n) stbiw__sbgrowf((void **) &(a), (n), sizeof(*(a))) - -#define stbiw__sbpush(a, v) stbiw__sbmaybegrow(a,1); (a)[stbiw__sbn(a)++] = (v); -#define stbiw__sbcount(a) (a != 0?stbiw__sbn(a):0) -#define stbiw__sbfree(a) if(a) { STBIW_FREE(stbiw__sbraw(a)); } - -static void *stbiw__sbgrowf(void **arr, int increment, int itemsize) -{ - int m = *arr ? 2*stbiw__sbm(*arr)+increment : increment+1; - void *p = STBIW_REALLOC_SIZED(*arr ? stbiw__sbraw(*arr) : 0, *arr ? (stbiw__sbm(*arr)*itemsize + sizeof(int)*2) : 0, itemsize * m + sizeof(int)*2); - STBIW_ASSERT(p); - if (p) { - if (!*arr) ((int *) p)[1] = 0; - *arr = (void *) ((int *) p + 2); - stbiw__sbm(*arr) = m; - } - return *arr; -} - -static unsigned char *stbiw__zlib_flushf(unsigned char *data, unsigned int *bitbuffer, int *bitcount) -{ - while (*bitcount >= 8) { - stbiw__sbpush(data, STBIW_UCHAR(*bitbuffer)); - *bitbuffer >>= 8; - *bitcount -= 8; - } - return data; -} - -static int stbiw__zlib_bitrev(int code, int codebits) -{ - int res=0; - while (codebits--) { - res = (res << 1) | (code & 1); - code >>= 1; - } - return res; -} - -static unsigned int stbiw__zlib_countm(unsigned char *a, unsigned char *b, int limit) -{ - int i; - for (i=0; i < limit && i < 258; ++i) - if (a[i] != b[i]) break; - return i; -} - -static unsigned int stbiw__zhash(unsigned char *data) -{ - stbiw_uint32 hash = data[0] + (data[1] << 8) + (data[2] << 16); - hash ^= hash << 3; - hash += hash >> 5; - hash ^= hash << 4; - hash += hash >> 17; - hash ^= hash << 25; - hash += hash >> 6; - return hash; -} - -#define stbiw__zlib_flush() out = stbiw__zlib_flushf(out, &bitbuf, &bitcount) -#define stbiw__zlib_add(code,codebits) { bitbuf |= (code) << bitcount; bitcount += (codebits); stbiw__zlib_flush(); } -#define stbiw__zlib_huffa(b,c) stbiw__zlib_add(stbiw__zlib_bitrev(b,c),c) -// default huffman tables -#define stbiw__zlib_huff1(n) stbiw__zlib_huffa(0x30 + (n), 8) -#define stbiw__zlib_huff2(n) stbiw__zlib_huffa(0x190 + (n)-144, 9) -#define stbiw__zlib_huff3(n) stbiw__zlib_huffa(0 + (n)-256,7) -#define stbiw__zlib_huff4(n) stbiw__zlib_huffa(0xc0 + (n)-280,8) -#define stbiw__zlib_huff(n) if(n <= 143) stbiw__zlib_huff1(n) else if(n <= 255) stbiw__zlib_huff2(n) else if (n <= 279) stbiw__zlib_huff3(n) else stbiw__zlib_huff4(n); -#define stbiw__zlib_huffb(n) if(n <= 143) stbiw__zlib_huff1(n) else stbiw__zlib_huff2(n); - -#define stbiw__ZHASH 16384 - -#endif // STBIW_ZLIB_COMPRESS - -static unsigned short lengthc[] = { 3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258, 259 }; -static unsigned char lengtheb[] = { 0,0,0,0,0,0,0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0 }; -static unsigned short distc[] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577, 32768 }; -static unsigned char disteb[] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13 }; - -STBIWDEF unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality) -{ -#ifdef STBIW_ZLIB_COMPRESS - // user provided a zlib compress implementation, use that - return STBIW_ZLIB_COMPRESS(data, data_len, out_len, quality); -#else // use builtin - unsigned int bitbuf=0; - int i,j, bitcount=0; - unsigned char *out = NULL; - unsigned char ***hash_table = (unsigned char***) STBIW_MALLOC(stbiw__ZHASH * sizeof(char**)); - if (hash_table == NULL) - return NULL; - if (quality < 5) quality = 5; - - stbiw__sbpush(out, 0x78); // DEFLATE 32K window - stbiw__sbpush(out, 0x5e); // FLEVEL = 1 - stbiw__zlib_add(1,1); // BFINAL = 1 - stbiw__zlib_add(1,2); // BTYPE = 1 -- fixed huffman - - for (i=0; i < stbiw__ZHASH; ++i) - hash_table[i] = NULL; - - i=0; - while (i < data_len-3) { - // hash next 3 bytes of data to be compressed - int h = stbiw__zhash(data+i)&(stbiw__ZHASH-1), best=3; - unsigned char *bestloc = 0; - unsigned char **hlist = hash_table[h]; - int n = stbiw__sbcount(hlist); - for (j=0; j < n; ++j) { - if (hlist[j]-data > i-32768) { // if entry lies within window - int d = stbiw__zlib_countm(hlist[j], data+i, data_len-i); - if (d >= best) { best=d; bestloc=hlist[j]; } - } - } - // when hash table entry is too long, delete half the entries - if (hash_table[h] && stbiw__sbn(hash_table[h]) == 2*quality) { - STBIW_MEMMOVE(hash_table[h], hash_table[h]+quality, sizeof(hash_table[h][0])*quality); - stbiw__sbn(hash_table[h]) = quality; - } - stbiw__sbpush(hash_table[h],data+i); - - if (bestloc) { - // "lazy matching" - check match at *next* byte, and if it's better, do cur byte as literal - h = stbiw__zhash(data+i+1)&(stbiw__ZHASH-1); - hlist = hash_table[h]; - n = stbiw__sbcount(hlist); - for (j=0; j < n; ++j) { - if (hlist[j]-data > i-32767) { - int e = stbiw__zlib_countm(hlist[j], data+i+1, data_len-i-1); - if (e > best) { // if next match is better, bail on current match - bestloc = NULL; - break; - } - } - } - } - - if (bestloc) { - int d = (int) (data+i - bestloc); // distance back - STBIW_ASSERT(d <= 32767 && best <= 258); - for (j=0; best > lengthc[j+1]-1; ++j); - stbiw__zlib_huff(j+257); - if (lengtheb[j]) stbiw__zlib_add(best - lengthc[j], lengtheb[j]); - for (j=0; d > distc[j+1]-1; ++j); - stbiw__zlib_add(stbiw__zlib_bitrev(j,5),5); - if (disteb[j]) stbiw__zlib_add(d - distc[j], disteb[j]); - i += best; - } else { - stbiw__zlib_huffb(data[i]); - ++i; - } - } - // write out final bytes - for (;i < data_len; ++i) - stbiw__zlib_huffb(data[i]); - stbiw__zlib_huff(256); // end of block - // pad with 0 bits to byte boundary - while (bitcount) - stbiw__zlib_add(0,1); - - for (i=0; i < stbiw__ZHASH; ++i) - stbiw__sbfree(hash_table[i]); - STBIW_FREE(hash_table); - - { - // compute adler32 on input - unsigned int s1=1, s2=0; - int blocklen = (int) (data_len % 5552); - j=0; - while (j < data_len) { - for (i=0; i < blocklen; ++i) { s1 += data[j+i]; s2 += s1; } - s1 %= 65521; s2 %= 65521; - j += blocklen; - blocklen = 5552; - } - stbiw__sbpush(out, STBIW_UCHAR(s2 >> 8)); - stbiw__sbpush(out, STBIW_UCHAR(s2)); - stbiw__sbpush(out, STBIW_UCHAR(s1 >> 8)); - stbiw__sbpush(out, STBIW_UCHAR(s1)); - } - *out_len = stbiw__sbn(out); - // make returned pointer freeable - STBIW_MEMMOVE(stbiw__sbraw(out), out, *out_len); - return (unsigned char *) stbiw__sbraw(out); -#endif // STBIW_ZLIB_COMPRESS -} - -static unsigned int crc_table[256] = -{ - 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, - 0x0eDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, - 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, - 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, - 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, - 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, - 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, - 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, - 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, - 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, - 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, - 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, - 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, - 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, - 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, - 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, - 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, - 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, - 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, - 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, - 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, - 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, - 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, - 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, - 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, - 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, - 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, - 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, - 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, - 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, - 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, - 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D -}; - -static unsigned int stbiw__crc32(unsigned char *buffer, int len) -{ -#ifdef STBIW_CRC32 - return STBIW_CRC32(buffer, len); -#else - unsigned int crc = ~0u; - int i; - for (i=0; i < len; ++i) - crc = (crc >> 8) ^ crc_table[buffer[i] ^ (crc & 0xff)]; - return ~crc; -#endif -} - -#define stbiw__wpng4(o,a,b,c,d) (o)[0]=STBIW_UCHAR(a);(o)[1]=STBIW_UCHAR(b);(o)[2]=STBIW_UCHAR(c);(o)[3]=STBIW_UCHAR(d);(o)+=4 -#define stbiw__wp32(data,v) stbiw__wpng4(data, (v)>>24,(v)>>16,(v)>>8,(v)); -#define stbiw__wptag(data,s) stbiw__wpng4(data, s[0],s[1],s[2],s[3]) - -static void stbiw__wpcrc(unsigned char **data, int len) -{ - unsigned int crc = stbiw__crc32(*data - len - 4, len+4); - stbiw__wp32(*data, crc); -} - -static unsigned char stbiw__paeth(int a, int b, int c) -{ - int p = a + b - c, pa = abs(p-a), pb = abs(p-b), pc = abs(p-c); - if (pa <= pb && pa <= pc) return STBIW_UCHAR(a); - if (pb <= pc) return STBIW_UCHAR(b); - return STBIW_UCHAR(c); -} - -// @OPTIMIZE: provide an option that always forces left-predict or paeth predict -static void stbiw__encode_png_line(unsigned char *pixels, int stride_bytes, int width, int height, int y, int n, int filter_type, signed char *line_buffer) -{ - static int mapping[] = { 0,1,2,3,4 }; - static int firstmap[] = { 0,1,0,5,6 }; - int *mymap = (y != 0) ? mapping : firstmap; - int i; - int type = mymap[filter_type]; - unsigned char *z = pixels + stride_bytes * (stbi__flip_vertically_on_write ? height-1-y : y); - int signed_stride = stbi__flip_vertically_on_write ? -stride_bytes : stride_bytes; - - if (type==0) { - memcpy(line_buffer, z, width*n); - return; - } - - // first loop isn't optimized since it's just one pixel - for (i = 0; i < n; ++i) { - switch (type) { - case 1: line_buffer[i] = z[i]; break; - case 2: line_buffer[i] = z[i] - z[i-signed_stride]; break; - case 3: line_buffer[i] = z[i] - (z[i-signed_stride]>>1); break; - case 4: line_buffer[i] = (signed char) (z[i] - stbiw__paeth(0,z[i-signed_stride],0)); break; - case 5: line_buffer[i] = z[i]; break; - case 6: line_buffer[i] = z[i]; break; - } - } - switch (type) { - case 1: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - z[i-n]; break; - case 2: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - z[i-signed_stride]; break; - case 3: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - ((z[i-n] + z[i-signed_stride])>>1); break; - case 4: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - stbiw__paeth(z[i-n], z[i-signed_stride], z[i-signed_stride-n]); break; - case 5: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - (z[i-n]>>1); break; - case 6: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - stbiw__paeth(z[i-n], 0,0); break; - } -} - -STBIWDEF unsigned char *stbi_write_png_to_mem(const unsigned char *pixels, int stride_bytes, int x, int y, int n, int *out_len) -{ - int force_filter = stbi_write_force_png_filter; - int ctype[5] = { -1, 0, 4, 2, 6 }; - unsigned char sig[8] = { 137,80,78,71,13,10,26,10 }; - unsigned char *out,*o, *filt, *zlib; - signed char *line_buffer; - int j,zlen; - - if (stride_bytes == 0) - stride_bytes = x * n; - - if (force_filter >= 5) { - force_filter = -1; - } - - filt = (unsigned char *) STBIW_MALLOC((x*n+1) * y); if (!filt) return 0; - line_buffer = (signed char *) STBIW_MALLOC(x * n); if (!line_buffer) { STBIW_FREE(filt); return 0; } - for (j=0; j < y; ++j) { - int filter_type; - if (force_filter > -1) { - filter_type = force_filter; - stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, force_filter, line_buffer); - } else { // Estimate the best filter by running through all of them: - int best_filter = 0, best_filter_val = 0x7fffffff, est, i; - for (filter_type = 0; filter_type < 5; filter_type++) { - stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, filter_type, line_buffer); - - // Estimate the entropy of the line using this filter; the less, the better. - est = 0; - for (i = 0; i < x*n; ++i) { - est += abs((signed char) line_buffer[i]); - } - if (est < best_filter_val) { - best_filter_val = est; - best_filter = filter_type; - } - } - if (filter_type != best_filter) { // If the last iteration already got us the best filter, don't redo it - stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, best_filter, line_buffer); - filter_type = best_filter; - } - } - // when we get here, filter_type contains the filter type, and line_buffer contains the data - filt[j*(x*n+1)] = (unsigned char) filter_type; - STBIW_MEMMOVE(filt+j*(x*n+1)+1, line_buffer, x*n); - } - STBIW_FREE(line_buffer); - zlib = stbi_zlib_compress(filt, y*( x*n+1), &zlen, stbi_write_png_compression_level); - STBIW_FREE(filt); - if (!zlib) return 0; - - // each tag requires 12 bytes of overhead - out = (unsigned char *) STBIW_MALLOC(8 + 12+13 + 12+zlen + 12); - if (!out) return 0; - *out_len = 8 + 12+13 + 12+zlen + 12; - - o=out; - STBIW_MEMMOVE(o,sig,8); o+= 8; - stbiw__wp32(o, 13); // header length - stbiw__wptag(o, "IHDR"); - stbiw__wp32(o, x); - stbiw__wp32(o, y); - *o++ = 8; - *o++ = STBIW_UCHAR(ctype[n]); - *o++ = 0; - *o++ = 0; - *o++ = 0; - stbiw__wpcrc(&o,13); - - stbiw__wp32(o, zlen); - stbiw__wptag(o, "IDAT"); - STBIW_MEMMOVE(o, zlib, zlen); - o += zlen; - STBIW_FREE(zlib); - stbiw__wpcrc(&o, zlen); - - stbiw__wp32(o,0); - stbiw__wptag(o, "IEND"); - stbiw__wpcrc(&o,0); - - STBIW_ASSERT(o == out + *out_len); - - return out; -} - -#ifndef STBI_WRITE_NO_STDIO -STBIWDEF int stbi_write_png(char const *filename, int x, int y, int comp, const void *data, int stride_bytes) -{ - FILE *f; - int len; - unsigned char *png = stbi_write_png_to_mem((const unsigned char *) data, stride_bytes, x, y, comp, &len); - if (png == NULL) return 0; - - f = stbiw__fopen(filename, "wb"); - if (!f) { STBIW_FREE(png); return 0; } - fwrite(png, 1, len, f); - fclose(f); - STBIW_FREE(png); - return 1; -} -#endif - -STBIWDEF int stbi_write_png_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int stride_bytes) -{ - int len; - unsigned char *png = stbi_write_png_to_mem((const unsigned char *) data, stride_bytes, x, y, comp, &len); - if (png == NULL) return 0; - func(context, png, len); - STBIW_FREE(png); - return 1; -} - - -/* *************************************************************************** - * - * JPEG writer - * - * This is based on Jon Olick's jo_jpeg.cpp: - * public domain Simple, Minimalistic JPEG writer - http://www.jonolick.com/code.html - */ - -static const unsigned char stbiw__jpg_ZigZag[] = { 0,1,5,6,14,15,27,28,2,4,7,13,16,26,29,42,3,8,12,17,25,30,41,43,9,11,18, - 24,31,40,44,53,10,19,23,32,39,45,52,54,20,22,33,38,46,51,55,60,21,34,37,47,50,56,59,61,35,36,48,49,57,58,62,63 }; - -static void stbiw__jpg_writeBits(stbi__write_context *s, int *bitBufP, int *bitCntP, const unsigned short *bs) { - int bitBuf = *bitBufP, bitCnt = *bitCntP; - bitCnt += bs[1]; - bitBuf |= bs[0] << (24 - bitCnt); - while(bitCnt >= 8) { - unsigned char c = (bitBuf >> 16) & 255; - stbiw__putc(s, c); - if(c == 255) { - stbiw__putc(s, 0); - } - bitBuf <<= 8; - bitCnt -= 8; - } - *bitBufP = bitBuf; - *bitCntP = bitCnt; -} - -static void stbiw__jpg_DCT(float *d0p, float *d1p, float *d2p, float *d3p, float *d4p, float *d5p, float *d6p, float *d7p) { - float d0 = *d0p, d1 = *d1p, d2 = *d2p, d3 = *d3p, d4 = *d4p, d5 = *d5p, d6 = *d6p, d7 = *d7p; - float z1, z2, z3, z4, z5, z11, z13; - - float tmp0 = d0 + d7; - float tmp7 = d0 - d7; - float tmp1 = d1 + d6; - float tmp6 = d1 - d6; - float tmp2 = d2 + d5; - float tmp5 = d2 - d5; - float tmp3 = d3 + d4; - float tmp4 = d3 - d4; - - // Even part - float tmp10 = tmp0 + tmp3; // phase 2 - float tmp13 = tmp0 - tmp3; - float tmp11 = tmp1 + tmp2; - float tmp12 = tmp1 - tmp2; - - d0 = tmp10 + tmp11; // phase 3 - d4 = tmp10 - tmp11; - - z1 = (tmp12 + tmp13) * 0.707106781f; // c4 - d2 = tmp13 + z1; // phase 5 - d6 = tmp13 - z1; - - // Odd part - tmp10 = tmp4 + tmp5; // phase 2 - tmp11 = tmp5 + tmp6; - tmp12 = tmp6 + tmp7; - - // The rotator is modified from fig 4-8 to avoid extra negations. - z5 = (tmp10 - tmp12) * 0.382683433f; // c6 - z2 = tmp10 * 0.541196100f + z5; // c2-c6 - z4 = tmp12 * 1.306562965f + z5; // c2+c6 - z3 = tmp11 * 0.707106781f; // c4 - - z11 = tmp7 + z3; // phase 5 - z13 = tmp7 - z3; - - *d5p = z13 + z2; // phase 6 - *d3p = z13 - z2; - *d1p = z11 + z4; - *d7p = z11 - z4; - - *d0p = d0; *d2p = d2; *d4p = d4; *d6p = d6; -} - -static void stbiw__jpg_calcBits(int val, unsigned short bits[2]) { - int tmp1 = val < 0 ? -val : val; - val = val < 0 ? val-1 : val; - bits[1] = 1; - while(tmp1 >>= 1) { - ++bits[1]; - } - bits[0] = val & ((1<0)&&(DU[end0pos]==0); --end0pos) { - } - // end0pos = first element in reverse order !=0 - if(end0pos == 0) { - stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB); - return DU[0]; - } - for(i = 1; i <= end0pos; ++i) { - int startpos = i; - int nrzeroes; - unsigned short bits[2]; - for (; DU[i]==0 && i<=end0pos; ++i) { - } - nrzeroes = i-startpos; - if ( nrzeroes >= 16 ) { - int lng = nrzeroes>>4; - int nrmarker; - for (nrmarker=1; nrmarker <= lng; ++nrmarker) - stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes); - nrzeroes &= 15; - } - stbiw__jpg_calcBits(DU[i], bits); - stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes<<4)+bits[1]]); - stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits); - } - if(end0pos != 63) { - stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB); - } - return DU[0]; -} - -static const unsigned char std_dc_luminance_nrcodes[] = { 0,0,1,5,1,1,1,1,1,1,0,0,0,0,0,0,0 }; -static const unsigned char std_dc_luminance_values[] = { 0,1,2,3,4,5,6,7,8,9,10,11 }; -static const unsigned char std_ac_luminance_nrcodes[] = { 0,0,2,1,3,3,2,4,3,5,5,4,4,0,0,1,0x7d }; -static const unsigned char std_ac_luminance_values[] = { - 0x01,0x02,0x03,0x00,0x04,0x11,0x05,0x12,0x21,0x31,0x41,0x06,0x13,0x51,0x61,0x07,0x22,0x71,0x14,0x32,0x81,0x91,0xa1,0x08, - 0x23,0x42,0xb1,0xc1,0x15,0x52,0xd1,0xf0,0x24,0x33,0x62,0x72,0x82,0x09,0x0a,0x16,0x17,0x18,0x19,0x1a,0x25,0x26,0x27,0x28, - 0x29,0x2a,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x53,0x54,0x55,0x56,0x57,0x58,0x59, - 0x5a,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x83,0x84,0x85,0x86,0x87,0x88,0x89, - 0x8a,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xb2,0xb3,0xb4,0xb5,0xb6, - 0xb7,0xb8,0xb9,0xba,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xe1,0xe2, - 0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa -}; -static const unsigned char std_dc_chrominance_nrcodes[] = { 0,0,3,1,1,1,1,1,1,1,1,1,0,0,0,0,0 }; -static const unsigned char std_dc_chrominance_values[] = { 0,1,2,3,4,5,6,7,8,9,10,11 }; -static const unsigned char std_ac_chrominance_nrcodes[] = { 0,0,2,1,2,4,4,3,4,7,5,4,4,0,1,2,0x77 }; -static const unsigned char std_ac_chrominance_values[] = { - 0x00,0x01,0x02,0x03,0x11,0x04,0x05,0x21,0x31,0x06,0x12,0x41,0x51,0x07,0x61,0x71,0x13,0x22,0x32,0x81,0x08,0x14,0x42,0x91, - 0xa1,0xb1,0xc1,0x09,0x23,0x33,0x52,0xf0,0x15,0x62,0x72,0xd1,0x0a,0x16,0x24,0x34,0xe1,0x25,0xf1,0x17,0x18,0x19,0x1a,0x26, - 0x27,0x28,0x29,0x2a,0x35,0x36,0x37,0x38,0x39,0x3a,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x53,0x54,0x55,0x56,0x57,0x58, - 0x59,0x5a,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x82,0x83,0x84,0x85,0x86,0x87, - 0x88,0x89,0x8a,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xb2,0xb3,0xb4, - 0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda, - 0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa -}; -// Huffman tables -static const unsigned short YDC_HT[256][2] = { {0,2},{2,3},{3,3},{4,3},{5,3},{6,3},{14,4},{30,5},{62,6},{126,7},{254,8},{510,9} }; -static const unsigned short UVDC_HT[256][2] = { {0,2},{1,2},{2,2},{6,3},{14,4},{30,5},{62,6},{126,7},{254,8},{510,9},{1022,10},{2046,11} }; -static const unsigned short YAC_HT[256][2] = { - {10,4},{0,2},{1,2},{4,3},{11,4},{26,5},{120,7},{248,8},{1014,10},{65410,16},{65411,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {12,4},{27,5},{121,7},{502,9},{2038,11},{65412,16},{65413,16},{65414,16},{65415,16},{65416,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {28,5},{249,8},{1015,10},{4084,12},{65417,16},{65418,16},{65419,16},{65420,16},{65421,16},{65422,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {58,6},{503,9},{4085,12},{65423,16},{65424,16},{65425,16},{65426,16},{65427,16},{65428,16},{65429,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {59,6},{1016,10},{65430,16},{65431,16},{65432,16},{65433,16},{65434,16},{65435,16},{65436,16},{65437,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {122,7},{2039,11},{65438,16},{65439,16},{65440,16},{65441,16},{65442,16},{65443,16},{65444,16},{65445,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {123,7},{4086,12},{65446,16},{65447,16},{65448,16},{65449,16},{65450,16},{65451,16},{65452,16},{65453,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {250,8},{4087,12},{65454,16},{65455,16},{65456,16},{65457,16},{65458,16},{65459,16},{65460,16},{65461,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {504,9},{32704,15},{65462,16},{65463,16},{65464,16},{65465,16},{65466,16},{65467,16},{65468,16},{65469,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {505,9},{65470,16},{65471,16},{65472,16},{65473,16},{65474,16},{65475,16},{65476,16},{65477,16},{65478,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {506,9},{65479,16},{65480,16},{65481,16},{65482,16},{65483,16},{65484,16},{65485,16},{65486,16},{65487,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {1017,10},{65488,16},{65489,16},{65490,16},{65491,16},{65492,16},{65493,16},{65494,16},{65495,16},{65496,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {1018,10},{65497,16},{65498,16},{65499,16},{65500,16},{65501,16},{65502,16},{65503,16},{65504,16},{65505,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {2040,11},{65506,16},{65507,16},{65508,16},{65509,16},{65510,16},{65511,16},{65512,16},{65513,16},{65514,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {65515,16},{65516,16},{65517,16},{65518,16},{65519,16},{65520,16},{65521,16},{65522,16},{65523,16},{65524,16},{0,0},{0,0},{0,0},{0,0},{0,0}, - {2041,11},{65525,16},{65526,16},{65527,16},{65528,16},{65529,16},{65530,16},{65531,16},{65532,16},{65533,16},{65534,16},{0,0},{0,0},{0,0},{0,0},{0,0} -}; -static const unsigned short UVAC_HT[256][2] = { - {0,2},{1,2},{4,3},{10,4},{24,5},{25,5},{56,6},{120,7},{500,9},{1014,10},{4084,12},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {11,4},{57,6},{246,8},{501,9},{2038,11},{4085,12},{65416,16},{65417,16},{65418,16},{65419,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {26,5},{247,8},{1015,10},{4086,12},{32706,15},{65420,16},{65421,16},{65422,16},{65423,16},{65424,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {27,5},{248,8},{1016,10},{4087,12},{65425,16},{65426,16},{65427,16},{65428,16},{65429,16},{65430,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {58,6},{502,9},{65431,16},{65432,16},{65433,16},{65434,16},{65435,16},{65436,16},{65437,16},{65438,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {59,6},{1017,10},{65439,16},{65440,16},{65441,16},{65442,16},{65443,16},{65444,16},{65445,16},{65446,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {121,7},{2039,11},{65447,16},{65448,16},{65449,16},{65450,16},{65451,16},{65452,16},{65453,16},{65454,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {122,7},{2040,11},{65455,16},{65456,16},{65457,16},{65458,16},{65459,16},{65460,16},{65461,16},{65462,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {249,8},{65463,16},{65464,16},{65465,16},{65466,16},{65467,16},{65468,16},{65469,16},{65470,16},{65471,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {503,9},{65472,16},{65473,16},{65474,16},{65475,16},{65476,16},{65477,16},{65478,16},{65479,16},{65480,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {504,9},{65481,16},{65482,16},{65483,16},{65484,16},{65485,16},{65486,16},{65487,16},{65488,16},{65489,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {505,9},{65490,16},{65491,16},{65492,16},{65493,16},{65494,16},{65495,16},{65496,16},{65497,16},{65498,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {506,9},{65499,16},{65500,16},{65501,16},{65502,16},{65503,16},{65504,16},{65505,16},{65506,16},{65507,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {2041,11},{65508,16},{65509,16},{65510,16},{65511,16},{65512,16},{65513,16},{65514,16},{65515,16},{65516,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, - {16352,14},{65517,16},{65518,16},{65519,16},{65520,16},{65521,16},{65522,16},{65523,16},{65524,16},{65525,16},{0,0},{0,0},{0,0},{0,0},{0,0}, - {1018,10},{32707,15},{65526,16},{65527,16},{65528,16},{65529,16},{65530,16},{65531,16},{65532,16},{65533,16},{65534,16},{0,0},{0,0},{0,0},{0,0},{0,0} -}; -static const int YQT[] = { 16,11,10,16,24,40,51,61,12,12,14,19,26,58,60,55,14,13,16,24,40,57,69,56,14,17,22,29,51,87,80,62,18,22, - 37,56,68,109,103,77,24,35,55,64,81,104,113,92,49,64,78,87,103,121,120,101,72,92,95,98,112,100,103,99 }; -static const int UVQT[] = { 17,18,24,47,99,99,99,99,18,21,26,66,99,99,99,99,24,26,56,99,99,99,99,99,47,66,99,99,99,99,99,99, - 99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99 }; -static const float aasf[] = { 1.0f * 2.828427125f, 1.387039845f * 2.828427125f, 1.306562965f * 2.828427125f, 1.175875602f * 2.828427125f, - 1.0f * 2.828427125f, 0.785694958f * 2.828427125f, 0.541196100f * 2.828427125f, 0.275899379f * 2.828427125f }; - -static const unsigned char head0[] = { 0xFF,0xD8,0xFF,0xE0,0,0x10,'J','F','I','F',0,1,1,0,0,1,0,1,0,0,0xFF,0xDB,0,0x84,0 }; -static const unsigned char head2[] = { 0xFF,0xDA,0,0xC,3,1,0,2,0x11,3,0x11,0,0x3F,0 }; - -static int stbi_write_jpg_core(stbi__write_context *s, int width, int height, int comp, const void* data, int quality) { - // Constants that don't pollute global namespace - - int row, col, i, k; - float fdtbl_Y[64], fdtbl_UV[64]; - unsigned char YTable[64], UVTable[64]; - - if(!data || !width || !height || comp > 4 || comp < 1) { - return 0; - } - - quality = quality ? quality : 90; - quality = quality < 1 ? 1 : quality > 100 ? 100 : quality; - quality = quality < 50 ? 5000 / quality : 200 - quality * 2; - - for(i = 0; i < 64; ++i) { - int uvti, yti = (YQT[i]*quality+50)/100; - YTable[stbiw__jpg_ZigZag[i]] = (unsigned char) (yti < 1 ? 1 : yti > 255 ? 255 : yti); - uvti = (UVQT[i]*quality+50)/100; - UVTable[stbiw__jpg_ZigZag[i]] = (unsigned char) (uvti < 1 ? 1 : uvti > 255 ? 255 : uvti); - } - - for(row = 0, k = 0; row < 8; ++row) { - for(col = 0; col < 8; ++col, ++k) { - fdtbl_Y[k] = 1 / (YTable [stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); - fdtbl_UV[k] = 1 / (UVTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); - } - } - - // Write Headers - { - const unsigned char head1[] = { 0xFF,0xC0,0,0x11,8,(unsigned char)(height>>8),STBIW_UCHAR(height),(unsigned char)(width>>8),STBIW_UCHAR(width), - 3,1,0x11,0,2,0x11,1,3,0x11,1,0xFF,0xC4,0x01,0xA2,0 }; - s->func(s->context, (void*)head0, sizeof(head0)); - s->func(s->context, (void*)YTable, sizeof(YTable)); - stbiw__putc(s, 1); - s->func(s->context, UVTable, sizeof(UVTable)); - s->func(s->context, (void*)head1, sizeof(head1)); - s->func(s->context, (void*)(std_dc_luminance_nrcodes+1), sizeof(std_dc_luminance_nrcodes)-1); - s->func(s->context, (void*)std_dc_luminance_values, sizeof(std_dc_luminance_values)); - stbiw__putc(s, 0x10); // HTYACinfo - s->func(s->context, (void*)(std_ac_luminance_nrcodes+1), sizeof(std_ac_luminance_nrcodes)-1); - s->func(s->context, (void*)std_ac_luminance_values, sizeof(std_ac_luminance_values)); - stbiw__putc(s, 1); // HTUDCinfo - s->func(s->context, (void*)(std_dc_chrominance_nrcodes+1), sizeof(std_dc_chrominance_nrcodes)-1); - s->func(s->context, (void*)std_dc_chrominance_values, sizeof(std_dc_chrominance_values)); - stbiw__putc(s, 0x11); // HTUACinfo - s->func(s->context, (void*)(std_ac_chrominance_nrcodes+1), sizeof(std_ac_chrominance_nrcodes)-1); - s->func(s->context, (void*)std_ac_chrominance_values, sizeof(std_ac_chrominance_values)); - s->func(s->context, (void*)head2, sizeof(head2)); - } - - // Encode 8x8 macroblocks - { - static const unsigned short fillBits[] = {0x7F, 7}; - const unsigned char *imageData = (const unsigned char *)data; - int DCY=0, DCU=0, DCV=0; - int bitBuf=0, bitCnt=0; - // comp == 2 is grey+alpha (alpha is ignored) - int ofsG = comp > 2 ? 1 : 0, ofsB = comp > 2 ? 2 : 0; - int x, y, pos; - for(y = 0; y < height; y += 8) { - for(x = 0; x < width; x += 8) { - float YDU[64], UDU[64], VDU[64]; - for(row = y, pos = 0; row < y+8; ++row) { - // row >= height => use last input row - int clamped_row = (row < height) ? row : height - 1; - int base_p = (stbi__flip_vertically_on_write ? (height-1-clamped_row) : clamped_row)*width*comp; - for(col = x; col < x+8; ++col, ++pos) { - float r, g, b; - // if col >= width => use pixel from last input column - int p = base_p + ((col < width) ? col : (width-1))*comp; - - r = imageData[p+0]; - g = imageData[p+ofsG]; - b = imageData[p+ofsB]; - YDU[pos]=+0.29900f*r+0.58700f*g+0.11400f*b-128; - UDU[pos]=-0.16874f*r-0.33126f*g+0.50000f*b; - VDU[pos]=+0.50000f*r-0.41869f*g-0.08131f*b; - } - } - - DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, YDU, fdtbl_Y, DCY, YDC_HT, YAC_HT); - DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, UDU, fdtbl_UV, DCU, UVDC_HT, UVAC_HT); - DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, VDU, fdtbl_UV, DCV, UVDC_HT, UVAC_HT); - } - } - - // Do the bit alignment of the EOI marker - stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits); - } - - // EOI - stbiw__putc(s, 0xFF); - stbiw__putc(s, 0xD9); - - return 1; -} - -STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int quality) -{ - stbi__write_context s; - stbi__start_write_callbacks(&s, func, context); - return stbi_write_jpg_core(&s, x, y, comp, (void *) data, quality); -} - - -#ifndef STBI_WRITE_NO_STDIO -STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const void *data, int quality) -{ - stbi__write_context s; - if (stbi__start_write_file(&s,filename)) { - int r = stbi_write_jpg_core(&s, x, y, comp, data, quality); - stbi__end_write_file(&s); - return r; - } else - return 0; -} -#endif - -#endif // STB_IMAGE_WRITE_IMPLEMENTATION - -/* Revision history - 1.10 (2019-02-07) - support utf8 filenames in Windows; fix warnings and platform ifdefs - 1.09 (2018-02-11) - fix typo in zlib quality API, improve STB_I_W_STATIC in C++ - 1.08 (2018-01-29) - add stbi__flip_vertically_on_write, external zlib, zlib quality, choose PNG filter - 1.07 (2017-07-24) - doc fix - 1.06 (2017-07-23) - writing JPEG (using Jon Olick's code) - 1.05 ??? - 1.04 (2017-03-03) - monochrome BMP expansion - 1.03 ??? - 1.02 (2016-04-02) - avoid allocating large structures on the stack - 1.01 (2016-01-16) - STBIW_REALLOC_SIZED: support allocators with no realloc support - avoid race-condition in crc initialization - minor compile issues - 1.00 (2015-09-14) - installable file IO function - 0.99 (2015-09-13) - warning fixes; TGA rle support - 0.98 (2015-04-08) - added STBIW_MALLOC, STBIW_ASSERT etc - 0.97 (2015-01-18) - fixed HDR asserts, rewrote HDR rle logic - 0.96 (2015-01-17) - add HDR output - fix monochrome BMP - 0.95 (2014-08-17) - add monochrome TGA output - 0.94 (2014-05-31) - rename private functions to avoid conflicts with stb_image.h - 0.93 (2014-05-27) - warning fixes - 0.92 (2010-08-01) - casts to unsigned char to fix warnings - 0.91 (2010-07-17) - first public release - 0.90 first internal release -*/ - -/* ------------------------------------------------------------------------------- -This software is available under 2 licenses -- choose whichever you prefer. ------------------------------------------------------------------------------- -ALTERNATIVE A - MIT License -Copyright (c) 2017 Sean Barrett -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files (the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies -of the Software, and to permit persons to whom the Software is furnished to do -so, subject to the following conditions: -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. ------------------------------------------------------------------------------- -ALTERNATIVE B - Public Domain (www.unlicense.org) -This is free and unencumbered software released into the public domain. -Anyone is free to copy, modify, publish, use, compile, sell, or distribute this -software, either in source code form or as a compiled binary, for any purpose, -commercial or non-commercial, and by any means. -In jurisdictions that recognize copyright laws, the author or authors of this -software dedicate any and all copyright interest in the software to the public -domain. We make this dedication for the benefit of the public at large and to -the detriment of our heirs and successors. We intend this dedication to be an -overt act of relinquishment in perpetuity of all present and future rights to -this software under copyright law. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN -ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ------------------------------------------------------------------------------- -*/ diff --git a/tests/Stb.Native/AssemblyInfo.cpp b/tests/Stb.Native/AssemblyInfo.cpp deleted file mode 100644 index c561464..0000000 --- a/tests/Stb.Native/AssemblyInfo.cpp +++ /dev/null @@ -1,38 +0,0 @@ -#include "stdafx.h" - -using namespace System; -using namespace System::Reflection; -using namespace System::Runtime::CompilerServices; -using namespace System::Runtime::InteropServices; -using namespace System::Security::Permissions; - -// -// General Information about an assembly is controlled through the following -// set of attributes. Change these attribute values to modify the information -// associated with an assembly. -// -[assembly:AssemblyTitleAttribute(L"StbNative")]; -[assembly:AssemblyDescriptionAttribute(L"")]; -[assembly:AssemblyConfigurationAttribute(L"")]; -[assembly:AssemblyCompanyAttribute(L"")]; -[assembly:AssemblyProductAttribute(L"StbNative")]; -[assembly:AssemblyCopyrightAttribute(L"Copyright (c) 2017")]; -[assembly:AssemblyTrademarkAttribute(L"")]; -[assembly:AssemblyCultureAttribute(L"")]; - -// -// Version information for an assembly consists of the following four values: -// -// Major Version -// Minor Version -// Build Number -// Revision -// -// You can specify all the value or you can default the Revision and Build Numbers -// by using the '*' as shown below: - -[assembly:AssemblyVersionAttribute("1.0.*")]; - -[assembly:ComVisible(false)]; - -[assembly:CLSCompliantAttribute(true)]; \ No newline at end of file diff --git a/tests/Stb.Native/ReadMe.txt b/tests/Stb.Native/ReadMe.txt deleted file mode 100644 index 3d11c6a..0000000 --- a/tests/Stb.Native/ReadMe.txt +++ /dev/null @@ -1,38 +0,0 @@ -======================================================================== - DYNAMIC LINK LIBRARY : Stb.Native Project Overview -======================================================================== - -AppWizard has created this Stb.Native DLL for you. - -This file contains a summary of what you will find in each of the files that -make up your Stb.Native application. - -Stb.Native.vcxproj - This is the main project file for VC++ projects generated using an Application Wizard. - It contains information about the version of Visual C++ that generated the file, and - information about the platforms, configurations, and project features selected with the - Application Wizard. - -Stb.Native.vcxproj.filters - This is the filters file for VC++ projects generated using an Application Wizard. - It contains information about the association between the files in your project - and the filters. This association is used in the IDE to show grouping of files with - similar extensions under a specific node (for e.g. ".cpp" files are associated with the - "Source Files" filter). - -Stb.Native.cpp - This is the main DLL source file. - -Stb.Native.h - This file contains a class declaration. - -AssemblyInfo.cpp - Contains custom attributes for modifying assembly metadata. - -///////////////////////////////////////////////////////////////////////////// -Other notes: - -AppWizard uses "TODO:" to indicate parts of the source code you -should add to or customize. - -///////////////////////////////////////////////////////////////////////////// diff --git a/tests/Stb.Native/Stb.Native.cpp b/tests/Stb.Native/Stb.Native.cpp deleted file mode 100644 index 467e397..0000000 --- a/tests/Stb.Native/Stb.Native.cpp +++ /dev/null @@ -1,6 +0,0 @@ -// This is the main DLL file. - -#include "stdafx.h" - -#include "Stb.Native.h" - diff --git a/tests/Stb.Native/Stb.Native.h b/tests/Stb.Native/Stb.Native.h deleted file mode 100644 index fa015ae..0000000 --- a/tests/Stb.Native/Stb.Native.h +++ /dev/null @@ -1,137 +0,0 @@ -// Stb.Native.h - -#pragma once - -using namespace System; -using namespace System::IO; -using namespace System::Collections::Generic; -using namespace System::Runtime::InteropServices; -using namespace System::Threading; - -#include -#include -#include - -#define STBI_WRITE_NO_STDIO -#define STB_IMAGE_WRITE_IMPLEMENTATION -#define STB_IMAGE_WRITE_STATIC -#include "../../generation/StbImageWriteSharp.Generator/stb_image_write.h" - -namespace StbNative { - void write_func(void *context, void *data, int size); - - public ref class Native - { - public: - static Dictionary ^writeInfo = gcnew Dictionary(); - static int _id = 0; - - static int GenerateId() - { - int %trackRefCounter = _id; - return System::Threading::Interlocked::Increment(trackRefCounter); - } - - // TODO: Add your methods for this class here. - static void save_to_stream(array ^bytes, int x, int y, int comp, int type, Stream ^output) - { - Monitor::Enter(writeInfo); - int id; - try { - id = GenerateId(); - - writeInfo->Add(id, output); - } - finally - { - Monitor::Exit(writeInfo); - } - - pin_ptr p = &bytes[0]; - unsigned char *ptr = (unsigned char *)p; - - std::vector ff; - switch (type) - { - case 0: - stbi_write_bmp_to_func(write_func, (void *)id, x, y, comp, ptr); - break; - case 1: - stbi_write_tga_to_func(write_func, (void *)id, x, y, comp, ptr); - break; - case 2: - { - ff.resize(bytes->Length); - for (int i = 0; i < bytes->Length; ++i) - { - ff[i] = (float)(bytes[i] / 255.0f); - } - - stbi_write_hdr_to_func(write_func, (void *)id, x, y, comp, &ff[0]); - break; - } - case 3: - stbi_write_png_to_func(write_func, (void *)id, x, y, comp, ptr, x * comp); - break; - } - - Monitor::Enter(writeInfo); - try { - writeInfo->Remove(id); - } - finally - { - Monitor::Exit(writeInfo); - } - } - - static void save_to_jpg(array ^bytes, int x, int y, int comp, Stream ^output, int quality) - { - Monitor::Enter(writeInfo); - int id; - try { - id = GenerateId(); - writeInfo->Add(id, output); - } - finally - { - Monitor::Exit(writeInfo); - } - - pin_ptr p = &bytes[0]; - unsigned char *ptr = (unsigned char *)p; - - stbi_write_jpg_to_func(write_func, (void *)id, x, y, comp, ptr, quality); - - Monitor::Enter(writeInfo); - try { - writeInfo->Remove(id); - } - finally - { - Monitor::Exit(writeInfo); - } - } - }; - - void write_func(void *context, void *data, int size) - { - Stream ^ info; - Monitor::Enter(Native::writeInfo); - int id = (int)context; - try { - info = Native::writeInfo[id]; - } - finally - { - Monitor::Exit(Native::writeInfo); - } - - unsigned char *bptr = (unsigned char *)data; - for (int i = 0; i < size; ++i) - { - info->WriteByte(*bptr); - ++bptr; - } - } -} diff --git a/tests/Stb.Native/Stb.Native.vcxproj b/tests/Stb.Native/Stb.Native.vcxproj deleted file mode 100644 index 8aa3747..0000000 --- a/tests/Stb.Native/Stb.Native.vcxproj +++ /dev/null @@ -1,104 +0,0 @@ - - - - - Debug - Win32 - - - Release - Win32 - - - - {EA7B8121-942A-437D-85D5-E4D55B94E88A} - v4.5 - ManagedCProj - StbNative - 10.0.17763.0 - - - - DynamicLibrary - true - v141 - true - Unicode - - - DynamicLibrary - false - v141 - true - Unicode - - - - - - - - - - - - - true - - - false - - - - Level3 - Disabled - WIN32;_DEBUG;%(PreprocessorDefinitions) - Use - - - true - - - - - - Level3 - WIN32;NDEBUG;%(PreprocessorDefinitions) - Use - - - true - - - - - - - - - - - - - - - - - - Create - Create - - - - - - - - - - - - - - - \ No newline at end of file diff --git a/tests/Stb.Native/Stb.Native.vcxproj.filters b/tests/Stb.Native/Stb.Native.vcxproj.filters deleted file mode 100644 index dda992f..0000000 --- a/tests/Stb.Native/Stb.Native.vcxproj.filters +++ /dev/null @@ -1,52 +0,0 @@ - - - - - {4FC737F1-C7A5-4376-A066-2A32D752A2FF} - cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx - - - {93995380-89BD-4b04-88EB-625FBE52EBFB} - h;hh;hpp;hxx;hm;inl;inc;xsd - - - {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} - rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms - - - - - Header Files - - - Header Files - - - Header Files - - - - - Source Files - - - Source Files - - - Source Files - - - - - - - - Resource Files - - - - - Resource Files - - - \ No newline at end of file diff --git a/tests/Stb.Native/Stdafx.cpp b/tests/Stb.Native/Stdafx.cpp deleted file mode 100644 index 8ae1e0e..0000000 --- a/tests/Stb.Native/Stdafx.cpp +++ /dev/null @@ -1,5 +0,0 @@ -// stdafx.cpp : source file that includes just the standard includes -// Stb.Native.pch will be the pre-compiled header -// stdafx.obj will contain the pre-compiled type information - -#include "stdafx.h" diff --git a/tests/Stb.Native/Stdafx.h b/tests/Stb.Native/Stdafx.h deleted file mode 100644 index 3cc4c24..0000000 --- a/tests/Stb.Native/Stdafx.h +++ /dev/null @@ -1,7 +0,0 @@ -// stdafx.h : include file for standard system include files, -// or project specific include files that are used frequently, -// but are changed infrequently - -#pragma once - - diff --git a/tests/Stb.Native/app.ico b/tests/Stb.Native/app.ico deleted file mode 100644 index d06d92b763b573936ea7ee8f9dde001bcd66128f..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 11001 zcmZQzU}RutP*4y6(ku)wm>3w!7#J7?1R#73Mh1pBW(J@<15loWVFd>RLmLZ79>ULH zWnj?b1!@2SMg|3jV4&J*LNN6T3@d=@UW&rhD==gL^-fe{V9)@nR{&xMAO_hB20**9 zg9Zi$AYy1}fKWgZ$OPgBh64u<044r|5ySugAQlhBkO+W!@Pl#`@c%yww;aev z);<#WC;@;aJSdb$4o)m=LeYz?g^*fm%ERmhrE_2w0H<|WI&Z*f5l{vs2~5{u3P=K( zB&Bnhz270hUjH2;Kt2sK2aSf=19UAIkdf73TETf0wLAb8G9bVLp}-^~kOW~MaB^~D z`1t+lFzshIQjnswhH2NBjlhq!sd z33H7nSLDt;B=_S*Z^-i}W%pNn@l!{0@q_)A>$l2XR&J1-{*v*43}b@- z|Lc@Jz}@$_;&rt+Lks7iLAjTi>+1h4Q$H}{_Ft=C`?whnv5X=bhrqU%jN5;gRxzdQ zWKi%S8ok+bt;(mLA#DfII(*O)FoOGld!B-lK<;s+r-2|rPgg&ebxsLQpr(rg5IX=d zXs8wh8bD)HqhL^l0B~6A|0w?UA2`fMSBxI!gT;Q}Q0ISIVwgX1`Ja|{gUlYaACk^T z!ymQWgQbhn^f#LSX_*FK>1;Irjpje(GyqE%^rDgN2C?a7FU+1%`?05gSoqMI9&F){ z?w*mtA5@*e0dNd#sslvR(|VY_s8cKoU?(^rF9o5Jqo|Rd$t@FLc7ybj+O`4d8PyLd dtA|7Qk&}jy<9{Ia!`wj*O=&i!q;vx51pvcOoFo7M diff --git a/tests/Stb.Native/app.rc b/tests/Stb.Native/app.rc deleted file mode 100644 index 2b99234262e5d5501f6e14393983ec377f9923ec..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 2546 zcmds3T}uK%6g>~~6a@Z+NneaY(+K*Y2fqkOE&7lGAxhg4Ov8`r*H`Dvx@xUf__V~b zJ2Q9g+`0G8Id}HsJ&iOhs%WE$K6)7N^)RHYPT2q>+@ix#0ULZQ9&nE?-#+C-wk^u~ zY_)F0UXy*xk*u}xOq~=~vBF)_u1!$d8m$Wu~bUseJiGrCyIC@lCU3qTb@gadhO^bjPpudvZFKGtbVt_$|h^oiCQ{)T;{FQ^OG% zmE*TWi&^YolWoR%ondd@Q)X2V=fZRG@xH0?KC^6YGrq+rFVkL~R*&gNagwv>F?RNh zrzd(rudi5}6h(oxM>VQ6i9&jMmCyN_%A_>%Ty^BEXcXjkex+<+Yg{d-dQ(}6p7?o` zrR>r>&#T)yWe;y-uKHCwjt0jK;@v;<-+kI%+NVWPCWw7iQXwta->*C2yCaM@+lYIRj3Gx{2oGeCk MmzmH_@K -#endif // STBI_NO_STDIO - -#define STBI_VERSION 1 - -enum -{ - STBI_default = 0, // only used for desired_channels - - STBI_grey = 1, - STBI_grey_alpha = 2, - STBI_rgb = 3, - STBI_rgb_alpha = 4 -}; - -typedef unsigned char stbi_uc; -typedef unsigned short stbi_us; - -#ifdef __cplusplus -extern "C" { -#endif - -#ifdef STB_IMAGE_STATIC -#define STBIDEF static -#else -#define STBIDEF extern -#endif - -////////////////////////////////////////////////////////////////////////////// -// -// PRIMARY API - works on images of any type -// - -// -// load image by filename, open file, or memory buffer -// - -typedef struct -{ - int (*read) (void *user,char *data,int size); // fill 'data' with 'size' bytes. return number of bytes actually read - void (*skip) (void *user,int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative - int (*eof) (void *user); // returns nonzero if we are at end of file/data -} stbi_io_callbacks; - -//////////////////////////////////// -// -// 8-bits-per-channel interface -// - -STBIDEF stbi_uc *stbi_load_from_memory (stbi_uc const *buffer, int len , int *x, int *y, int *channels_in_file, int desired_channels); -STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk , void *user, int *x, int *y, int *channels_in_file, int desired_channels); - -#ifndef STBI_NO_STDIO -STBIDEF stbi_uc *stbi_load (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); -STBIDEF stbi_uc *stbi_load_from_file (FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); -// for stbi_load_from_file, file pointer is left pointing immediately after image -#endif - -//////////////////////////////////// -// -// 16-bits-per-channel interface -// - -STBIDEF stbi_us *stbi_load_16_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); -STBIDEF stbi_us *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels); - -#ifndef STBI_NO_STDIO -STBIDEF stbi_us *stbi_load_16 (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); -STBIDEF stbi_us *stbi_load_from_file_16(FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); -#endif - -//////////////////////////////////// -// -// float-per-channel interface -// -#ifndef STBI_NO_LINEAR - STBIDEF float *stbi_loadf_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); - STBIDEF float *stbi_loadf_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels); - - #ifndef STBI_NO_STDIO - STBIDEF float *stbi_loadf (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); - STBIDEF float *stbi_loadf_from_file (FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); - #endif -#endif - -#ifndef STBI_NO_HDR - STBIDEF void stbi_hdr_to_ldr_gamma(float gamma); - STBIDEF void stbi_hdr_to_ldr_scale(float scale); -#endif // STBI_NO_HDR - -#ifndef STBI_NO_LINEAR - STBIDEF void stbi_ldr_to_hdr_gamma(float gamma); - STBIDEF void stbi_ldr_to_hdr_scale(float scale); -#endif // STBI_NO_LINEAR - -// stbi_is_hdr is always defined, but always returns false if STBI_NO_HDR -STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user); -STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len); -#ifndef STBI_NO_STDIO -STBIDEF int stbi_is_hdr (char const *filename); -STBIDEF int stbi_is_hdr_from_file(FILE *f); -#endif // STBI_NO_STDIO - - -// get a VERY brief reason for failure -// NOT THREADSAFE -STBIDEF const char *stbi_failure_reason (void); - -// free the loaded image -- this is just free() -STBIDEF void stbi_image_free (void *retval_from_stbi_load); - -// get image dimensions & components without fully decoding -STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp); -STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp); - -#ifndef STBI_NO_STDIO -STBIDEF int stbi_info (char const *filename, int *x, int *y, int *comp); -STBIDEF int stbi_info_from_file (FILE *f, int *x, int *y, int *comp); - -#endif - - - -// for image formats that explicitly notate that they have premultiplied alpha, -// we just return the colors as stored in the file. set this flag to force -// unpremultiplication. results are undefined if the unpremultiply overflow. -STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply); - -// indicate whether we should process iphone images back to canonical format, -// or just pass them through "as-is" -STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert); - -// flip the image vertically, so the first pixel in the output array is the bottom left -STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip); - -// ZLIB client - used by PNG, available for other purposes - -STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen); -STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header); -STBIDEF char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen); -STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); - -STBIDEF char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len, int *outlen); -STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); - - -#ifdef __cplusplus -} -#endif - -// -// -//// end header file ///////////////////////////////////////////////////// -#endif // STBI_INCLUDE_STB_IMAGE_H - -#ifdef STB_IMAGE_IMPLEMENTATION - -#if defined(STBI_ONLY_JPEG) || defined(STBI_ONLY_PNG) || defined(STBI_ONLY_BMP) \ - || defined(STBI_ONLY_TGA) || defined(STBI_ONLY_GIF) || defined(STBI_ONLY_PSD) \ - || defined(STBI_ONLY_HDR) || defined(STBI_ONLY_PIC) || defined(STBI_ONLY_PNM) \ - || defined(STBI_ONLY_ZLIB) - #ifndef STBI_ONLY_JPEG - #define STBI_NO_JPEG - #endif - #ifndef STBI_ONLY_PNG - #define STBI_NO_PNG - #endif - #ifndef STBI_ONLY_BMP - #define STBI_NO_BMP - #endif - #ifndef STBI_ONLY_PSD - #define STBI_NO_PSD - #endif - #ifndef STBI_ONLY_TGA - #define STBI_NO_TGA - #endif - #ifndef STBI_ONLY_GIF - #define STBI_NO_GIF - #endif - #ifndef STBI_ONLY_HDR - #define STBI_NO_HDR - #endif - #ifndef STBI_ONLY_PIC - #define STBI_NO_PIC - #endif - #ifndef STBI_ONLY_PNM - #define STBI_NO_PNM - #endif -#endif - -#if defined(STBI_NO_PNG) && !defined(STBI_SUPPORT_ZLIB) && !defined(STBI_NO_ZLIB) -#define STBI_NO_ZLIB -#endif - - -#include -#include // ptrdiff_t on osx -#include -#include -#include - -#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) -#include // ldexp -#endif - -#ifndef STBI_NO_STDIO -#include -#endif - -#ifndef STBI_ASSERT -#include -#define STBI_ASSERT(x) -#endif - - -#ifndef _MSC_VER - #ifdef __cplusplus - #define stbi_inline inline - #else - #define stbi_inline - #endif -#else - #define stbi_inline __forceinline -#endif - - -#ifdef _MSC_VER -typedef unsigned short stbi__uint16; -typedef signed short stbi__int16; -typedef unsigned int stbi__uint32; -typedef signed int stbi__int32; -#else -#include -typedef uint16_t stbi__uint16; -typedef int16_t stbi__int16; -typedef uint32_t stbi__uint32; -typedef int32_t stbi__int32; -#endif - -// should produce compiler error if size is wrong -typedef unsigned char validate_uint32[sizeof(stbi__uint32)==4 ? 1 : -1]; - -#ifdef _MSC_VER -#define STBI_NOTUSED(v) -#else -#define STBI_NOTUSED(v) -#endif - -#ifdef _MSC_VER -#define STBI_HAS_LROTL -#endif - -#ifdef STBI_HAS_LROTL - #define stbi_lrot(x,y) _lrotl(x,y) -#else - #define stbi_lrot(x,y) (((x) << (y)) | ((x) >> (32 - (y)))) -#endif - -#if defined(STBI_MALLOC) && defined(STBI_FREE) && (defined(STBI_REALLOC) || defined(STBI_REALLOC_SIZED)) -// ok -#elif !defined(STBI_MALLOC) && !defined(STBI_FREE) && !defined(STBI_REALLOC) && !defined(STBI_REALLOC_SIZED) -// ok -#else -#error "Must define all or none of STBI_MALLOC, STBI_FREE, and STBI_REALLOC (or STBI_REALLOC_SIZED)." -#endif - -#ifndef STBI_MALLOC -#define STBI_MALLOC(sz) malloc(sz) -#define STBI_REALLOC(p,newsz) realloc(p,newsz) -#define STBI_FREE(p) free(p) -#endif - -#ifndef STBI_REALLOC_SIZED -#define STBI_REALLOC_SIZED(p,oldsz,newsz) STBI_REALLOC(p,newsz) -#endif - -// x86/x64 detection -#if defined(__x86_64__) || defined(_M_X64) -#define STBI__X64_TARGET -#elif defined(__i386) || defined(_M_IX86) -#define STBI__X86_TARGET -#endif - -#if defined(__GNUC__) && defined(STBI__X86_TARGET) && !defined(__SSE2__) && !defined(STBI_NO_SIMD) -// gcc doesn't support sse2 intrinsics unless you compile with -msse2, -// which in turn means it gets to use SSE2 everywhere. This is unfortunate, -// but previous attempts to provide the SSE2 functions with runtime -// detection caused numerous issues. The way architecture extensions are -// exposed in GCC/Clang is, sadly, not really suited for one-file libs. -// New behavior: if compiled with -msse2, we use SSE2 without any -// detection; if not, we don't use it at all. -#define STBI_NO_SIMD -#endif - -#if defined(__MINGW32__) && defined(STBI__X86_TARGET) && !defined(STBI_MINGW_ENABLE_SSE2) && !defined(STBI_NO_SIMD) -// Note that __MINGW32__ doesn't actually mean 32-bit, so we have to avoid STBI__X64_TARGET -// -// 32-bit MinGW wants ESP to be 16-byte aligned, but this is not in the -// Windows ABI and VC++ as well as Windows DLLs don't maintain that invariant. -// As a result, enabling SSE2 on 32-bit MinGW is dangerous when not -// simultaneously enabling "-mstackrealign". -// -// See https://github.com/nothings/stb/issues/81 for more information. -// -// So default to no SSE2 on 32-bit MinGW. If you've read this far and added -// -mstackrealign to your build settings, feel free to #define STBI_MINGW_ENABLE_SSE2. -#define STBI_NO_SIMD -#endif - -#if !defined(STBI_NO_SIMD) && (defined(STBI__X86_TARGET) || defined(STBI__X64_TARGET)) -#define STBI_SSE2 -#include - -#ifdef _MSC_VER - -#if _MSC_VER >= 1400 // not VC6 -#include // __cpuid -static int stbi__cpuid3(void) -{ - int info[4]; - __cpuid(info,1); - return info[3]; -} -#else -static int stbi__cpuid3(void) -{ - int res; - __asm { - mov eax,1 - cpuid - mov res,edx - } - return res; -} -#endif - -#define STBI_SIMD_ALIGN(type, name) __declspec(align(16)) type name - -static int stbi__sse2_available(void) -{ - int info3 = stbi__cpuid3(); - return ((info3 >> 26) & 1) != 0; -} -#else // assume GCC-style if not VC++ -#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) - -static int stbi__sse2_available(void) -{ - // If we're even attempting to compile this on GCC/Clang, that means - // -msse2 is on, which means the compiler is allowed to use SSE2 - // instructions at will, and so are we. - return 1; -} -#endif -#endif - -// ARM NEON -#if defined(STBI_NO_SIMD) && defined(STBI_NEON) -#undef STBI_NEON -#endif - -#ifdef STBI_NEON -#include -// assume GCC or Clang on ARM targets -#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) -#endif - -#ifndef STBI_SIMD_ALIGN -#define STBI_SIMD_ALIGN(type, name) type name -#endif - -/////////////////////////////////////////////// -// -// stbi__context struct and start_xxx functions - -// stbi__context structure is our basic context used by all images, so it -// contains all the IO context, plus some basic image information -typedef struct -{ - stbi__uint32 img_x, img_y; - int img_n, img_out_n; - - stbi_io_callbacks io; - void *io_user_data; - - int read_from_callbacks; - int buflen; - stbi_uc buffer_start[128]; - - stbi_uc *img_buffer, *img_buffer_end; - stbi_uc *img_buffer_original, *img_buffer_original_end; -} stbi__context; - - -static void stbi__refill_buffer(stbi__context *s); - -// initialize a memory-decode context -static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len) -{ - s->io.read = NULL; - s->read_from_callbacks = 0; - s->img_buffer = s->img_buffer_original = (stbi_uc *) buffer; - s->img_buffer_end = s->img_buffer_original_end = (stbi_uc *) buffer+len; -} - -// initialize a callback-based context -static void stbi__start_callbacks(stbi__context *s, stbi_io_callbacks *c, void *user) -{ - s->io = *c; - s->io_user_data = user; - s->buflen = sizeof(s->buffer_start); - s->read_from_callbacks = 1; - s->img_buffer_original = s->buffer_start; - stbi__refill_buffer(s); - s->img_buffer_original_end = s->img_buffer_end; -} - -#ifndef STBI_NO_STDIO - -static int stbi__stdio_read(void *user, char *data, int size) -{ - return (int) fread(data,1,size,(FILE*) user); -} - -static void stbi__stdio_skip(void *user, int n) -{ - fseek((FILE*) user, n, SEEK_CUR); -} - -static int stbi__stdio_eof(void *user) -{ - return feof((FILE*) user); -} - -static stbi_io_callbacks stbi__stdio_callbacks = -{ - stbi__stdio_read, - stbi__stdio_skip, - stbi__stdio_eof, -}; - -static void stbi__start_file(stbi__context *s, FILE *f) -{ - stbi__start_callbacks(s, &stbi__stdio_callbacks, (void *) f); -} - -//static void stop_file(stbi__context *s) { } - -#endif // !STBI_NO_STDIO - -static void stbi__rewind(stbi__context *s) -{ - // conceptually rewind SHOULD rewind to the beginning of the stream, - // but we just rewind to the beginning of the initial buffer, because - // we only use it after doing 'test', which only ever looks at at most 92 bytes - s->img_buffer = s->img_buffer_original; - s->img_buffer_end = s->img_buffer_original_end; -} - -enum -{ - STBI_ORDER_RGB, - STBI_ORDER_BGR -}; - -typedef struct -{ - int bits_per_channel; - int num_channels; - int channel_order; -} stbi__result_info; - -#ifndef STBI_NO_JPEG -static int stbi__jpeg_test(stbi__context *s); -static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_PNG -static int stbi__png_test(stbi__context *s); -static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_BMP -static int stbi__bmp_test(stbi__context *s); -static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_TGA -static int stbi__tga_test(stbi__context *s); -static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_PSD -static int stbi__psd_test(stbi__context *s); -static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc); -static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_HDR -static int stbi__hdr_test(stbi__context *s); -static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_PIC -static int stbi__pic_test(stbi__context *s); -static void *stbi__pic_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_GIF -static int stbi__gif_test(stbi__context *s); -static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_PNM -static int stbi__pnm_test(stbi__context *s); -static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -// this is not threadsafe -static const char *stbi__g_failure_reason; - -STBIDEF const char *stbi_failure_reason(void) -{ - return stbi__g_failure_reason; -} - -static int stbi__err(const char *str) -{ - stbi__g_failure_reason = str; - return 0; -} - -static void *stbi__malloc(size_t size) -{ - return STBI_MALLOC(size); -} - -// stb_image uses ints pervasively, including for offset calculations. -// therefore the largest decoded image size we can support with the -// current code, even on 64-bit targets, is INT_MAX. this is not a -// significant limitation for the intended use case. -// -// we do, however, need to make sure our size calculations don't -// overflow. hence a few helper functions for size calculations that -// multiply integers together, making sure that they're non-negative -// and no overflow occurs. - -// return 1 if the sum is valid, 0 on overflow. -// negative terms are considered invalid. -static int stbi__addsizes_valid(int a, int b) -{ - if (b < 0) return 0; - // now 0 <= b <= INT_MAX, hence also - // 0 <= INT_MAX - b <= INTMAX. - // And "a + b <= INT_MAX" (which might overflow) is the - // same as a <= INT_MAX - b (no overflow) - return a <= INT_MAX - b; -} - -// returns 1 if the product is valid, 0 on overflow. -// negative factors are considered invalid. -static int stbi__mul2sizes_valid(int a, int b) -{ - if (a < 0 || b < 0) return 0; - if (b == 0) return 1; // mul-by-0 is always safe - // portable way to check for no overflows in a*b - return a <= INT_MAX/b; -} - -// returns 1 if "a*b + add" has no negative terms/factors and doesn't overflow -static int stbi__mad2sizes_valid(int a, int b, int add) -{ - return stbi__mul2sizes_valid(a, b) && stbi__addsizes_valid(a*b, add); -} - -// returns 1 if "a*b*c + add" has no negative terms/factors and doesn't overflow -static int stbi__mad3sizes_valid(int a, int b, int c, int add) -{ - return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && - stbi__addsizes_valid(a*b*c, add); -} - -// returns 1 if "a*b*c*d + add" has no negative terms/factors and doesn't overflow -static int stbi__mad4sizes_valid(int a, int b, int c, int d, int add) -{ - return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && - stbi__mul2sizes_valid(a*b*c, d) && stbi__addsizes_valid(a*b*c*d, add); -} - -// mallocs with size overflow checking -static void *stbi__malloc_mad2(int a, int b, int add) -{ - if (!stbi__mad2sizes_valid(a, b, add)) return NULL; - return stbi__malloc(a*b + add); -} - -static void *stbi__malloc_mad3(int a, int b, int c, int add) -{ - if (!stbi__mad3sizes_valid(a, b, c, add)) return NULL; - return stbi__malloc(a*b*c + add); -} - -static void *stbi__malloc_mad4(int a, int b, int c, int d, int add) -{ - if (!stbi__mad4sizes_valid(a, b, c, d, add)) return NULL; - return stbi__malloc(a*b*c*d + add); -} - -// stbi__err - error -// stbi__errpf - error returning pointer to float -// stbi__errpuc - error returning pointer to unsigned char - -#ifdef STBI_NO_FAILURE_STRINGS - #define stbi__err(x,y) 0 -#elif defined(STBI_FAILURE_USERMSG) - #define stbi__err(x,y) stbi__err(y) -#else - #define stbi__err(x,y) stbi__err(x) -#endif - -#define stbi__errpf(x,y) ((float *)(size_t) (stbi__err(x,y)?NULL:NULL)) -#define stbi__errpuc(x,y) ((unsigned char *)(size_t) (stbi__err(x,y)?NULL:NULL)) - -STBIDEF void stbi_image_free(void *retval_from_stbi_load) -{ - STBI_FREE(retval_from_stbi_load); -} - -#ifndef STBI_NO_LINEAR -static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp); -#endif - -#ifndef STBI_NO_HDR -static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp); -#endif - -static int stbi__vertically_flip_on_load = 0; - -STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip) -{ - stbi__vertically_flip_on_load = flag_true_if_should_flip; -} - -static void *stbi__load_main(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) -{ - ri->bits_per_channel = 8; // default is 8 so most paths don't have to be changed - ri->channel_order = STBI_ORDER_RGB; // all current input & output are this, but this is here so we can add BGR order - ri->num_channels = 0; - - #ifndef STBI_NO_JPEG - if (stbi__jpeg_test(s)) return stbi__jpeg_load(s,x,y,comp,req_comp, ri); - #endif - #ifndef STBI_NO_PNG - if (stbi__png_test(s)) return stbi__png_load(s,x,y,comp,req_comp, ri); - #endif - #ifndef STBI_NO_BMP - if (stbi__bmp_test(s)) return stbi__bmp_load(s,x,y,comp,req_comp, ri); - #endif - #ifndef STBI_NO_GIF - if (stbi__gif_test(s)) return stbi__gif_load(s,x,y,comp,req_comp, ri); - #endif - #ifndef STBI_NO_PSD - if (stbi__psd_test(s)) return stbi__psd_load(s,x,y,comp,req_comp, ri, bpc); - #endif - #ifndef STBI_NO_PIC - if (stbi__pic_test(s)) return stbi__pic_load(s,x,y,comp,req_comp, ri); - #endif - #ifndef STBI_NO_PNM - if (stbi__pnm_test(s)) return stbi__pnm_load(s,x,y,comp,req_comp, ri); - #endif - - #ifndef STBI_NO_HDR - if (stbi__hdr_test(s)) { - float *hdr = stbi__hdr_load(s, x,y,comp,req_comp, ri); - return stbi__hdr_to_ldr(hdr, *x, *y, req_comp ? req_comp : *comp); - } - #endif - - #ifndef STBI_NO_TGA - // test tga last because it's a crappy test! - if (stbi__tga_test(s)) - return stbi__tga_load(s,x,y,comp,req_comp, ri); - #endif - - return stbi__errpuc("unknown image type", "Image not of any known type, or corrupt"); -} - -static stbi_uc *stbi__convert_16_to_8(stbi__uint16 *orig, int w, int h, int channels) -{ - int i; - int img_len = w * h * channels; - stbi_uc *reduced; - - reduced = (stbi_uc *) stbi__malloc(img_len); - if (reduced == NULL) return stbi__errpuc("outofmem", "Out of memory"); - - for (i = 0; i < img_len; ++i) - reduced[i] = (stbi_uc)((orig[i] >> 8) & 0xFF); // top half of each byte is sufficient approx of 16->8 bit scaling - - STBI_FREE(orig); - return reduced; -} - -static stbi__uint16 *stbi__convert_8_to_16(stbi_uc *orig, int w, int h, int channels) -{ - int i; - int img_len = w * h * channels; - stbi__uint16 *enlarged; - - enlarged = (stbi__uint16 *) stbi__malloc(img_len*2); - if (enlarged == NULL) return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); - - for (i = 0; i < img_len; ++i) - enlarged[i] = (stbi__uint16)((orig[i] << 8) + orig[i]); // replicate to high and low byte, maps 0->0, 255->0xffff - - STBI_FREE(orig); - return enlarged; -} - -static void stbi__vertical_flip(void *image, int w, int h, int bytes_per_pixel) -{ - int row; - size_t bytes_per_row = (size_t)w * bytes_per_pixel; - stbi_uc temp[2048]; - stbi_uc *bytes = (stbi_uc *)image; - - for (row = 0; row < (h>>1); row++) { - stbi_uc *row0 = bytes + row*bytes_per_row; - stbi_uc *row1 = bytes + (h - row - 1)*bytes_per_row; - // swap row0 with row1 - size_t bytes_left = bytes_per_row; - while (bytes_left) { - size_t bytes_copy = (bytes_left < 2048) ? bytes_left : 2048; - memcpy(temp, row0, bytes_copy); - memcpy(row0, row1, bytes_copy); - memcpy(row1, temp, bytes_copy); - row0 += bytes_copy; - row1 += bytes_copy; - bytes_left -= bytes_copy; - } - } -} - -static unsigned char *stbi__load_and_postprocess_8bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) -{ - stbi__result_info ri; - void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 8); - - if (result == NULL) - return NULL; - - if (ri.bits_per_channel != 8) { - STBI_ASSERT(ri.bits_per_channel == 16); - result = stbi__convert_16_to_8((stbi__uint16 *) result, *x, *y, req_comp == 0 ? *comp : req_comp); - ri.bits_per_channel = 8; - } - - // @TODO: move stbi__convert_format to here - - if (stbi__vertically_flip_on_load) { - int channels = req_comp ? req_comp : *comp; - stbi__vertical_flip(result, *x, *y, channels); - } - - return (unsigned char *) result; -} - -static stbi__uint16 *stbi__load_and_postprocess_16bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) -{ - stbi__result_info ri; - void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 16); - - if (result == NULL) - return NULL; - - if (ri.bits_per_channel != 16) { - STBI_ASSERT(ri.bits_per_channel == 8); - result = stbi__convert_8_to_16((stbi_uc *) result, *x, *y, req_comp == 0 ? *comp : req_comp); - ri.bits_per_channel = 16; - } - - // @TODO: move stbi__convert_format16 to here - // @TODO: special case RGB-to-Y (and RGBA-to-YA) for 8-bit-to-16-bit case to keep more precision - - if (stbi__vertically_flip_on_load) { - int channels = req_comp ? req_comp : *comp; - stbi__vertical_flip(result, *x, *y, channels * 2); - } - - return (stbi__uint16 *) result; -} - -#ifndef STBI_NO_HDR -static void stbi__float_postprocess(float *result, int *x, int *y, int *comp, int req_comp) -{ - if (stbi__vertically_flip_on_load && result != NULL) { - int channels = req_comp ? req_comp : *comp; - stbi__vertical_flip(result, *x, *y, channels * sizeof(float)); - } -} -#endif - -#ifndef STBI_NO_STDIO - -static FILE *stbi__fopen(char const *filename, char const *mode) -{ - FILE *f; -#if defined(_MSC_VER) && _MSC_VER >= 1400 - if (0 != fopen_s(&f, filename, mode)) - f=0; -#else - f = fopen(filename, mode); -#endif - return f; -} - - -STBIDEF stbi_uc *stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp) -{ - FILE *f = stbi__fopen(filename, "rb"); - unsigned char *result; - if (!f) return stbi__errpuc("can't fopen", "Unable to open file"); - result = stbi_load_from_file(f,x,y,comp,req_comp); - fclose(f); - return result; -} - -STBIDEF stbi_uc *stbi_load_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) -{ - unsigned char *result; - stbi__context s; - stbi__start_file(&s,f); - result = stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); - if (result) { - // need to 'unget' all the characters in the IO buffer - fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); - } - return result; -} - -STBIDEF stbi__uint16 *stbi_load_from_file_16(FILE *f, int *x, int *y, int *comp, int req_comp) -{ - stbi__uint16 *result; - stbi__context s; - stbi__start_file(&s,f); - result = stbi__load_and_postprocess_16bit(&s,x,y,comp,req_comp); - if (result) { - // need to 'unget' all the characters in the IO buffer - fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); - } - return result; -} - -STBIDEF stbi_us *stbi_load_16(char const *filename, int *x, int *y, int *comp, int req_comp) -{ - FILE *f = stbi__fopen(filename, "rb"); - stbi__uint16 *result; - if (!f) return (stbi_us *) stbi__errpuc("can't fopen", "Unable to open file"); - result = stbi_load_from_file_16(f,x,y,comp,req_comp); - fclose(f); - return result; -} - - -#endif //!STBI_NO_STDIO - -STBIDEF stbi_us *stbi_load_16_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels) -{ - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__load_and_postprocess_16bit(&s,x,y,channels_in_file,desired_channels); -} - -STBIDEF stbi_us *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels) -{ - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *)clbk, user); - return stbi__load_and_postprocess_16bit(&s,x,y,channels_in_file,desired_channels); -} - -STBIDEF stbi_uc *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) -{ - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); -} - -STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) -{ - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); - return stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); -} - -#ifndef STBI_NO_LINEAR -static float *stbi__loadf_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) -{ - unsigned char *data; - #ifndef STBI_NO_HDR - if (stbi__hdr_test(s)) { - stbi__result_info ri; - float *hdr_data = stbi__hdr_load(s,x,y,comp,req_comp, &ri); - if (hdr_data) - stbi__float_postprocess(hdr_data,x,y,comp,req_comp); - return hdr_data; - } - #endif - data = stbi__load_and_postprocess_8bit(s, x, y, comp, req_comp); - if (data) - return stbi__ldr_to_hdr(data, *x, *y, req_comp ? req_comp : *comp); - return stbi__errpf("unknown image type", "Image not of any known type, or corrupt"); -} - -STBIDEF float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) -{ - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__loadf_main(&s,x,y,comp,req_comp); -} - -STBIDEF float *stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) -{ - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); - return stbi__loadf_main(&s,x,y,comp,req_comp); -} - -#ifndef STBI_NO_STDIO -STBIDEF float *stbi_loadf(char const *filename, int *x, int *y, int *comp, int req_comp) -{ - float *result; - FILE *f = stbi__fopen(filename, "rb"); - if (!f) return stbi__errpf("can't fopen", "Unable to open file"); - result = stbi_loadf_from_file(f,x,y,comp,req_comp); - fclose(f); - return result; -} - -STBIDEF float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) -{ - stbi__context s; - stbi__start_file(&s,f); - return stbi__loadf_main(&s,x,y,comp,req_comp); -} -#endif // !STBI_NO_STDIO - -#endif // !STBI_NO_LINEAR - -// these is-hdr-or-not is defined independent of whether STBI_NO_LINEAR is -// defined, for API simplicity; if STBI_NO_LINEAR is defined, it always -// reports false! - -STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len) -{ - #ifndef STBI_NO_HDR - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__hdr_test(&s); - #else - STBI_NOTUSED(buffer); - STBI_NOTUSED(len); - return 0; - #endif -} - -#ifndef STBI_NO_STDIO -STBIDEF int stbi_is_hdr (char const *filename) -{ - FILE *f = stbi__fopen(filename, "rb"); - int result=0; - if (f) { - result = stbi_is_hdr_from_file(f); - fclose(f); - } - return result; -} - -STBIDEF int stbi_is_hdr_from_file(FILE *f) -{ - #ifndef STBI_NO_HDR - stbi__context s; - stbi__start_file(&s,f); - return stbi__hdr_test(&s); - #else - STBI_NOTUSED(f); - return 0; - #endif -} -#endif // !STBI_NO_STDIO - -STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user) -{ - #ifndef STBI_NO_HDR - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); - return stbi__hdr_test(&s); - #else - STBI_NOTUSED(clbk); - STBI_NOTUSED(user); - return 0; - #endif -} - -#ifndef STBI_NO_LINEAR -static float stbi__l2h_gamma=2.2f, stbi__l2h_scale=1.0f; - -STBIDEF void stbi_ldr_to_hdr_gamma(float gamma) { stbi__l2h_gamma = gamma; } -STBIDEF void stbi_ldr_to_hdr_scale(float scale) { stbi__l2h_scale = scale; } -#endif - -static float stbi__h2l_gamma_i=1.0f/2.2f, stbi__h2l_scale_i=1.0f; - -STBIDEF void stbi_hdr_to_ldr_gamma(float gamma) { stbi__h2l_gamma_i = 1/gamma; } -STBIDEF void stbi_hdr_to_ldr_scale(float scale) { stbi__h2l_scale_i = 1/scale; } - - -////////////////////////////////////////////////////////////////////////////// -// -// Common code used by all image loaders -// - -enum -{ - STBI__SCAN_load=0, - STBI__SCAN_type, - STBI__SCAN_header -}; - -static void stbi__refill_buffer(stbi__context *s) -{ - int n = (s->io.read)(s->io_user_data,(char*)s->buffer_start,s->buflen); - if (n == 0) { - // at end of file, treat same as if from memory, but need to handle case - // where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file - s->read_from_callbacks = 0; - s->img_buffer = s->buffer_start; - s->img_buffer_end = s->buffer_start+1; - *s->img_buffer = 0; - } else { - s->img_buffer = s->buffer_start; - s->img_buffer_end = s->buffer_start + n; - } -} - -stbi_inline static stbi_uc stbi__get8(stbi__context *s) -{ - if (s->img_buffer < s->img_buffer_end) - return *s->img_buffer++; - if (s->read_from_callbacks) { - stbi__refill_buffer(s); - return *s->img_buffer++; - } - return 0; -} - -stbi_inline static int stbi__at_eof(stbi__context *s) -{ - if (s->io.read) { - if (!(s->io.eof)(s->io_user_data)) return 0; - // if feof() is true, check if buffer = end - // special case: we've only got the special 0 character at the end - if (s->read_from_callbacks == 0) return 1; - } - - return s->img_buffer >= s->img_buffer_end; -} - -static void stbi__skip(stbi__context *s, int n) -{ - if (n < 0) { - s->img_buffer = s->img_buffer_end; - return; - } - if (s->io.read) { - int blen = (int) (s->img_buffer_end - s->img_buffer); - if (blen < n) { - s->img_buffer = s->img_buffer_end; - (s->io.skip)(s->io_user_data, n - blen); - return; - } - } - s->img_buffer += n; -} - -static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) -{ - if (s->io.read) { - int blen = (int) (s->img_buffer_end - s->img_buffer); - if (blen < n) { - int res, count; - - memcpy(buffer, s->img_buffer, blen); - - count = (s->io.read)(s->io_user_data, (char*) buffer + blen, n - blen); - res = (count == (n-blen)); - s->img_buffer = s->img_buffer_end; - return res; - } - } - - if (s->img_buffer+n <= s->img_buffer_end) { - memcpy(buffer, s->img_buffer, n); - s->img_buffer += n; - return 1; - } else - return 0; -} - -static int stbi__get16be(stbi__context *s) -{ - int z = stbi__get8(s); - return (z << 8) + stbi__get8(s); -} - -static stbi__uint32 stbi__get32be(stbi__context *s) -{ - stbi__uint32 z = stbi__get16be(s); - return (z << 16) + stbi__get16be(s); -} - -#if defined(STBI_NO_BMP) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) -// nothing -#else -static int stbi__get16le(stbi__context *s) -{ - int z = stbi__get8(s); - return z + (stbi__get8(s) << 8); -} -#endif - -#ifndef STBI_NO_BMP -static stbi__uint32 stbi__get32le(stbi__context *s) -{ - stbi__uint32 z = stbi__get16le(s); - return z + (stbi__get16le(s) << 16); -} -#endif - -#define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) // truncate int to byte without warnings - - -////////////////////////////////////////////////////////////////////////////// -// -// generic converter from built-in img_n to req_comp -// individual types do this automatically as much as possible (e.g. jpeg -// does all cases internally since it needs to colorspace convert anyway, -// and it never has alpha, so very few cases ). png can automatically -// interleave an alpha=255 channel, but falls back to this for other cases -// -// assume data buffer is malloced, so malloc a new one and free that one -// only failure mode is malloc failing - -static stbi_uc stbi__compute_y(int r, int g, int b) -{ - return (stbi_uc) (((r*77) + (g*150) + (29*b)) >> 8); -} - -static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) -{ - int i,j; - unsigned char *good; - - if (req_comp == img_n) return data; - STBI_ASSERT(req_comp >= 1 && req_comp <= 4); - - good = (unsigned char *) stbi__malloc_mad3(req_comp, x, y, 0); - if (good == NULL) { - STBI_FREE(data); - return stbi__errpuc("outofmem", "Out of memory"); - } - - for (j=0; j < (int) y; ++j) { - unsigned char *src = data + j * x * img_n ; - unsigned char *dest = good + j * x * req_comp; - - #define STBI__COMBO(a,b) ((a)*8+(b)) - #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) - // convert source image with img_n components to one with req_comp components; - // avoid switch per pixel, so use switch per scanline and massive macros - switch (STBI__COMBO(img_n, req_comp)) { - STBI__CASE(1,2) { dest[0]=src[0]; dest[1]=255; } break; - STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; - STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=255; } break; - STBI__CASE(2,1) { dest[0]=src[0]; } break; - STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; - STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=src[1]; } break; - STBI__CASE(3,4) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2];dest[3]=255; } break; - STBI__CASE(3,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; - STBI__CASE(3,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); dest[1] = 255; } break; - STBI__CASE(4,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; - STBI__CASE(4,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); dest[1] = src[3]; } break; - STBI__CASE(4,3) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2]; } break; - default: return stbi__errpuc("0", "0"); - } - #undef STBI__CASE - } - - STBI_FREE(data); - return good; -} - -static stbi__uint16 stbi__compute_y_16(int r, int g, int b) -{ - return (stbi__uint16) (((r*77) + (g*150) + (29*b)) >> 8); -} - -static stbi__uint16 *stbi__convert_format16(stbi__uint16 *data, int img_n, int req_comp, unsigned int x, unsigned int y) -{ - int i,j; - stbi__uint16 *good; - - if (req_comp == img_n) return data; - STBI_ASSERT(req_comp >= 1 && req_comp <= 4); - - good = (stbi__uint16 *) stbi__malloc(req_comp * x * y * 2); - if (good == NULL) { - STBI_FREE(data); - return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); - } - - for (j=0; j < (int) y; ++j) { - stbi__uint16 *src = data + j * x * img_n ; - stbi__uint16 *dest = good + j * x * req_comp; - - #define STBI__COMBO(a,b) ((a)*8+(b)) - #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) - // convert source image with img_n components to one with req_comp components; - // avoid switch per pixel, so use switch per scanline and massive macros - switch (STBI__COMBO(img_n, req_comp)) { - STBI__CASE(1,2) { dest[0]=src[0]; dest[1]=0xffff; } break; - STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; - STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=0xffff; } break; - STBI__CASE(2,1) { dest[0]=src[0]; } break; - STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; - STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0]; dest[3]=src[1]; } break; - STBI__CASE(3,4) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2];dest[3]=0xffff; } break; - STBI__CASE(3,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; - STBI__CASE(3,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); dest[1] = 0xffff; } break; - STBI__CASE(4,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; - STBI__CASE(4,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); dest[1] = src[3]; } break; - STBI__CASE(4,3) { dest[0]=src[0];dest[1]=src[1];dest[2]=src[2]; } break; - default: return (stbi__uint16 *)stbi__errpuc("0", "0"); - } - #undef STBI__CASE - } - - STBI_FREE(data); - return good; -} - -#ifndef STBI_NO_LINEAR -static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp) -{ - int i,k,n; - float *output; - if (!data) return NULL; - output = (float *) stbi__malloc_mad4(x, y, comp, sizeof(float), 0); - if (output == NULL) { STBI_FREE(data); return stbi__errpf("outofmem", "Out of memory"); } - // compute number of non-alpha components - if (comp & 1) n = comp; else n = comp-1; - for (i=0; i < x*y; ++i) { - for (k=0; k < n; ++k) { - output[i*comp + k] = (float) (pow(data[i*comp+k]/255.0f, stbi__l2h_gamma) * stbi__l2h_scale); - } - if (k < comp) output[i*comp + k] = data[i*comp+k]/255.0f; - } - STBI_FREE(data); - return output; -} -#endif - -#ifndef STBI_NO_HDR -#define stbi__float2int(x) ((int) (x)) -static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp) -{ - int i,k,n; - stbi_uc *output; - if (!data) return NULL; - output = (stbi_uc *) stbi__malloc_mad3(x, y, comp, 0); - if (output == NULL) { STBI_FREE(data); return stbi__errpuc("outofmem", "Out of memory"); } - // compute number of non-alpha components - if (comp & 1) n = comp; else n = comp-1; - for (i=0; i < x*y; ++i) { - for (k=0; k < n; ++k) { - float z = (float) pow(data[i*comp+k]*stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 + 0.5f; - if (z < 0) z = 0; - if (z > 255) z = 255; - output[i*comp + k] = (stbi_uc) stbi__float2int(z); - } - if (k < comp) { - float z = data[i*comp+k] * 255 + 0.5f; - if (z < 0) z = 0; - if (z > 255) z = 255; - output[i*comp + k] = (stbi_uc) stbi__float2int(z); - } - } - STBI_FREE(data); - return output; -} -#endif - -////////////////////////////////////////////////////////////////////////////// -// -// "baseline" JPEG/JFIF decoder -// -// simple implementation -// - doesn't support delayed output of y-dimension -// - simple interface (only one output format: 8-bit interleaved RGB) -// - doesn't try to recover corrupt jpegs -// - doesn't allow partial loading, loading multiple at once -// - still fast on x86 (copying globals into locals doesn't help x86) -// - allocates lots of intermediate memory (full size of all components) -// - non-interleaved case requires this anyway -// - allows good upsampling (see next) -// high-quality -// - upsampled channels are bilinearly interpolated, even across blocks -// - quality integer IDCT derived from IJG's 'slow' -// performance -// - fast huffman; reasonable integer IDCT -// - some SIMD kernels for common paths on targets with SSE2/NEON -// - uses a lot of intermediate memory, could cache poorly - -#ifndef STBI_NO_JPEG - -// huffman decoding acceleration -#define FAST_BITS 9 // larger handles more cases; smaller stomps less cache - -typedef struct -{ - stbi_uc fast[1 << FAST_BITS]; - // weirdly, repacking this into AoS is a 10% speed loss, instead of a win - stbi__uint16 code[256]; - stbi_uc values[256]; - stbi_uc size[257]; - unsigned int maxcode[18]; - int delta[17]; // old 'firstsymbol' - old 'firstcode' -} stbi__huffman; - -typedef struct -{ - stbi__context *s; - stbi__huffman huff_dc[4]; - stbi__huffman huff_ac[4]; - stbi__uint16 dequant[4][64]; - stbi__int16 fast_ac[4][1 << FAST_BITS]; - -// sizes for components, interleaved MCUs - int img_h_max, img_v_max; - int img_mcu_x, img_mcu_y; - int img_mcu_w, img_mcu_h; - -// definition of jpeg image component - struct - { - int id; - int h,v; - int tq; - int hd,ha; - int dc_pred; - - int x,y,w2,h2; - stbi_uc *data; - void *raw_data, *raw_coeff; - stbi_uc *linebuf; - short *coeff; // progressive only - int coeff_w, coeff_h; // number of 8x8 coefficient blocks - } img_comp[4]; - - stbi__uint32 code_buffer; // jpeg entropy-coded buffer - int code_bits; // number of valid bits - unsigned char marker; // marker seen while filling entropy buffer - int nomore; // flag if we saw a marker so must stop - - int progressive; - int spec_start; - int spec_end; - int succ_high; - int succ_low; - int eob_run; - int jfif; - int app14_color_transform; // Adobe APP14 tag - int rgb; - - int scan_n, order[4]; - int restart_interval, todo; - -// kernels - void (*idct_block_kernel)(stbi_uc *out, int out_stride, short data[64]); - void (*YCbCr_to_RGB_kernel)(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step); - stbi_uc *(*resample_row_hv_2_kernel)(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs); -} stbi__jpeg; - -static int stbi__build_huffman(stbi__huffman *h, int *count) -{ - int i,j,k=0,code; - // build size list for each symbol (from JPEG spec) - for (i=0; i < 16; ++i) - for (j=0; j < count[i]; ++j) - h->size[k++] = (stbi_uc) (i+1); - h->size[k] = 0; - - // compute actual symbols (from jpeg spec) - code = 0; - k = 0; - for(j=1; j <= 16; ++j) { - // compute delta to add to code to compute symbol id - h->delta[j] = k - code; - if (h->size[k] == j) { - while (h->size[k] == j) - h->code[k++] = (stbi__uint16) (code++); - if (code-1 >= (1 << j)) return stbi__err("bad code lengths","Corrupt JPEG"); - } - // compute largest code + 1 for this size, preshifted as needed later - h->maxcode[j] = code << (16-j); - code <<= 1; - } - h->maxcode[j] = 0xffffffff; - - // build non-spec acceleration table; 255 is flag for not-accelerated - memset(h->fast, 255, 1 << FAST_BITS); - for (i=0; i < k; ++i) { - int s = h->size[i]; - if (s <= FAST_BITS) { - int c = h->code[i] << (FAST_BITS-s); - int m = 1 << (FAST_BITS-s); - for (j=0; j < m; ++j) { - h->fast[c+j] = (stbi_uc) i; - } - } - } - return 1; -} - -// build a table that decodes both magnitude and value of small ACs in -// one go. -static void stbi__build_fast_ac(stbi__int16 *fast_ac, stbi__huffman *h) -{ - int i; - for (i=0; i < (1 << FAST_BITS); ++i) { - stbi_uc fast = h->fast[i]; - fast_ac[i] = 0; - if (fast < 255) { - int rs = h->values[fast]; - int run = (rs >> 4) & 15; - int magbits = rs & 15; - int len = h->size[fast]; - - if (magbits && len + magbits <= FAST_BITS) { - // magnitude code followed by receive_extend code - int k = ((i << len) & ((1 << FAST_BITS) - 1)) >> (FAST_BITS - magbits); - int m = 1 << (magbits - 1); - if (k < m) k += (~0U << magbits) + 1; - // if the result is small enough, we can fit it in fast_ac table - if (k >= -128 && k <= 127) - fast_ac[i] = (stbi__int16) ((k << 8) + (run << 4) + (len + magbits)); - } - } - } -} - -static void stbi__grow_buffer_unsafe(stbi__jpeg *j) -{ - do { - int b = j->nomore ? 0 : stbi__get8(j->s); - if (b == 0xff) { - int c = stbi__get8(j->s); - while (c == 0xff) c = stbi__get8(j->s); // consume fill bytes - if (c != 0) { - j->marker = (unsigned char) c; - j->nomore = 1; - return; - } - } - j->code_buffer |= b << (24 - j->code_bits); - j->code_bits += 8; - } while (j->code_bits <= 24); -} - -// (1 << n) - 1 -static stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535}; - -// decode a jpeg huffman value from the bitstream -stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h) -{ - unsigned int temp; - int c,k; - - if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); - - // look at the top FAST_BITS and determine what symbol ID it is, - // if the code is <= FAST_BITS - c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); - k = h->fast[c]; - if (k < 255) { - int s = h->size[k]; - if (s > j->code_bits) - return -1; - j->code_buffer <<= s; - j->code_bits -= s; - return h->values[k]; - } - - // naive test is to shift the code_buffer down so k bits are - // valid, then test against maxcode. To speed this up, we've - // preshifted maxcode left so that it has (16-k) 0s at the - // end; in other words, regardless of the number of bits, it - // wants to be compared against something shifted to have 16; - // that way we don't need to shift inside the loop. - temp = j->code_buffer >> 16; - for (k=FAST_BITS+1 ; ; ++k) - if (temp < h->maxcode[k]) - break; - if (k == 17) { - // error! code not found - j->code_bits -= 16; - return -1; - } - - if (k > j->code_bits) - return -1; - - // convert the huffman code to the symbol id - c = ((j->code_buffer >> (32 - k)) & stbi__bmask[k]) + h->delta[k]; - STBI_ASSERT((((j->code_buffer) >> (32 - h->size[c])) & stbi__bmask[h->size[c]]) == h->code[c]); - - // convert the id to a symbol - j->code_bits -= k; - j->code_buffer <<= k; - return h->values[c]; -} - -// bias[n] = (-1<code_bits < n) stbi__grow_buffer_unsafe(j); - - sgn = (stbi__int32)j->code_buffer >> 31; // sign bit is always in MSB - k = stbi_lrot(j->code_buffer, n); - STBI_ASSERT(n >= 0 && n < (int) (sizeof(stbi__bmask)/sizeof(*stbi__bmask))); - j->code_buffer = k & ~stbi__bmask[n]; - k &= stbi__bmask[n]; - j->code_bits -= n; - return k + (stbi__jbias[n] & ~sgn); -} - -// get some unsigned bits -stbi_inline static int stbi__jpeg_get_bits(stbi__jpeg *j, int n) -{ - unsigned int k; - if (j->code_bits < n) stbi__grow_buffer_unsafe(j); - k = stbi_lrot(j->code_buffer, n); - j->code_buffer = k & ~stbi__bmask[n]; - k &= stbi__bmask[n]; - j->code_bits -= n; - return k; -} - -stbi_inline static int stbi__jpeg_get_bit(stbi__jpeg *j) -{ - unsigned int k; - if (j->code_bits < 1) stbi__grow_buffer_unsafe(j); - k = j->code_buffer; - j->code_buffer <<= 1; - --j->code_bits; - return k & 0x80000000; -} - -// given a value that's at position X in the zigzag stream, -// where does it appear in the 8x8 matrix coded as row-major? -static stbi_uc stbi__jpeg_dezigzag[64+15] = -{ - 0, 1, 8, 16, 9, 2, 3, 10, - 17, 24, 32, 25, 18, 11, 4, 5, - 12, 19, 26, 33, 40, 48, 41, 34, - 27, 20, 13, 6, 7, 14, 21, 28, - 35, 42, 49, 56, 57, 50, 43, 36, - 29, 22, 15, 23, 30, 37, 44, 51, - 58, 59, 52, 45, 38, 31, 39, 46, - 53, 60, 61, 54, 47, 55, 62, 63, - // let corrupt input sample past end - 63, 63, 63, 63, 63, 63, 63, 63, - 63, 63, 63, 63, 63, 63, 63 -}; - -// decode one 64-entry block-- -static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, stbi__int16 *fac, int b, stbi__uint16 *dequant) -{ - int diff,dc,k; - int t; - - if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); - t = stbi__jpeg_huff_decode(j, hdc); - if (t < 0) return stbi__err("bad huffman code","Corrupt JPEG"); - - // 0 all the ac values now so we can do it 32-bits at a time - memset(data,0,64*sizeof(data[0])); - - diff = t ? stbi__extend_receive(j, t) : 0; - dc = j->img_comp[b].dc_pred + diff; - j->img_comp[b].dc_pred = dc; - data[0] = (short) (dc * dequant[0]); - - // decode AC components, see JPEG spec - k = 1; - do { - unsigned int zig; - int c,r,s; - if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); - c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); - r = fac[c]; - if (r) { // fast-AC path - k += (r >> 4) & 15; // run - s = r & 15; // combined length - j->code_buffer <<= s; - j->code_bits -= s; - // decode into unzigzag'd location - zig = stbi__jpeg_dezigzag[k++]; - data[zig] = (short) ((r >> 8) * dequant[zig]); - } else { - int rs = stbi__jpeg_huff_decode(j, hac); - if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); - s = rs & 15; - r = rs >> 4; - if (s == 0) { - if (rs != 0xf0) break; // end block - k += 16; - } else { - k += r; - // decode into unzigzag'd location - zig = stbi__jpeg_dezigzag[k++]; - data[zig] = (short) (stbi__extend_receive(j,s) * dequant[zig]); - } - } - } while (k < 64); - return 1; -} - -static int stbi__jpeg_decode_block_prog_dc(stbi__jpeg *j, short data[64], stbi__huffman *hdc, int b) -{ - int diff,dc; - int t; - if (j->spec_end != 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); - - if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); - - if (j->succ_high == 0) { - // first scan for DC coefficient, must be first - memset(data,0,64*sizeof(data[0])); // 0 all the ac values now - t = stbi__jpeg_huff_decode(j, hdc); - diff = t ? stbi__extend_receive(j, t) : 0; - - dc = j->img_comp[b].dc_pred + diff; - j->img_comp[b].dc_pred = dc; - data[0] = (short) (dc << j->succ_low); - } else { - // refinement scan for DC coefficient - if (stbi__jpeg_get_bit(j)) - data[0] += (short) (1 << j->succ_low); - } - return 1; -} - -// @OPTIMIZE: store non-zigzagged during the decode passes, -// and only de-zigzag when dequantizing -static int stbi__jpeg_decode_block_prog_ac(stbi__jpeg *j, short data[64], stbi__huffman *hac, stbi__int16 *fac) -{ - int k; - if (j->spec_start == 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); - - if (j->succ_high == 0) { - int shift = j->succ_low; - - if (j->eob_run) { - --j->eob_run; - return 1; - } - - k = j->spec_start; - do { - unsigned int zig; - int c,r,s; - if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); - c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); - r = fac[c]; - if (r) { // fast-AC path - k += (r >> 4) & 15; // run - s = r & 15; // combined length - j->code_buffer <<= s; - j->code_bits -= s; - zig = stbi__jpeg_dezigzag[k++]; - data[zig] = (short) ((r >> 8) << shift); - } else { - int rs = stbi__jpeg_huff_decode(j, hac); - if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); - s = rs & 15; - r = rs >> 4; - if (s == 0) { - if (r < 15) { - j->eob_run = (1 << r); - if (r) - j->eob_run += stbi__jpeg_get_bits(j, r); - --j->eob_run; - break; - } - k += 16; - } else { - k += r; - zig = stbi__jpeg_dezigzag[k++]; - data[zig] = (short) (stbi__extend_receive(j,s) << shift); - } - } - } while (k <= j->spec_end); - } else { - // refinement scan for these AC coefficients - - short bit = (short) (1 << j->succ_low); - - if (j->eob_run) { - --j->eob_run; - for (k = j->spec_start; k <= j->spec_end; ++k) { - short *p = &data[stbi__jpeg_dezigzag[k]]; - if (*p != 0) - if (stbi__jpeg_get_bit(j)) - if ((*p & bit)==0) { - if (*p > 0) - *p += bit; - else - *p -= bit; - } - } - } else { - k = j->spec_start; - do { - int r,s; - int rs = stbi__jpeg_huff_decode(j, hac); // @OPTIMIZE see if we can use the fast path here, advance-by-r is so slow, eh - if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); - s = rs & 15; - r = rs >> 4; - if (s == 0) { - if (r < 15) { - j->eob_run = (1 << r) - 1; - if (r) - j->eob_run += stbi__jpeg_get_bits(j, r); - r = 64; // force end of block - } else { - // r=15 s=0 should write 16 0s, so we just do - // a run of 15 0s and then write s (which is 0), - // so we don't have to do anything special here - } - } else { - if (s != 1) return stbi__err("bad huffman code", "Corrupt JPEG"); - // sign bit - if (stbi__jpeg_get_bit(j)) - s = bit; - else - s = -bit; - } - - // advance by r - while (k <= j->spec_end) { - short *p = &data[stbi__jpeg_dezigzag[k++]]; - if (*p != 0) { - if (stbi__jpeg_get_bit(j)) - if ((*p & bit)==0) { - if (*p > 0) - *p += bit; - else - *p -= bit; - } - } else { - if (r == 0) { - *p = (short) s; - break; - } - --r; - } - } - } while (k <= j->spec_end); - } - } - return 1; -} - -// take a -128..127 value and stbi__clamp it and convert to 0..255 -stbi_inline static stbi_uc stbi__clamp(int x) -{ - // trick to use a single test to catch both cases - if ((unsigned int) x > 255) { - if (x < 0) return 0; - if (x > 255) return 255; - } - return (stbi_uc) x; -} - -#define stbi__f2f(x) ((int) (((x) * 4096 + 0.5))) -#define stbi__fsh(x) ((x) << 12) - -// derived from jidctint -- DCT_ISLOW -#define STBI__IDCT_1D(s0,s1,s2,s3,s4,s5,s6,s7) \ - int t0,t1,t2,t3,p1,p2,p3,p4,p5,x0,x1,x2,x3; \ - p2 = s2; \ - p3 = s6; \ - p1 = (p2+p3) * stbi__f2f(0.5411961f); \ - t2 = p1 + p3*stbi__f2f(-1.847759065f); \ - t3 = p1 + p2*stbi__f2f( 0.765366865f); \ - p2 = s0; \ - p3 = s4; \ - t0 = stbi__fsh(p2+p3); \ - t1 = stbi__fsh(p2-p3); \ - x0 = t0+t3; \ - x3 = t0-t3; \ - x1 = t1+t2; \ - x2 = t1-t2; \ - t0 = s7; \ - t1 = s5; \ - t2 = s3; \ - t3 = s1; \ - p3 = t0+t2; \ - p4 = t1+t3; \ - p1 = t0+t3; \ - p2 = t1+t2; \ - p5 = (p3+p4)*stbi__f2f( 1.175875602f); \ - t0 = t0*stbi__f2f( 0.298631336f); \ - t1 = t1*stbi__f2f( 2.053119869f); \ - t2 = t2*stbi__f2f( 3.072711026f); \ - t3 = t3*stbi__f2f( 1.501321110f); \ - p1 = p5 + p1*stbi__f2f(-0.899976223f); \ - p2 = p5 + p2*stbi__f2f(-2.562915447f); \ - p3 = p3*stbi__f2f(-1.961570560f); \ - p4 = p4*stbi__f2f(-0.390180644f); \ - t3 += p1+p4; \ - t2 += p2+p3; \ - t1 += p2+p4; \ - t0 += p1+p3; - -static void stbi__idct_block(stbi_uc *out, int out_stride, short data[64]) -{ - int i,val[64],*v=val; - stbi_uc *o; - short *d = data; - - // columns - for (i=0; i < 8; ++i,++d, ++v) { - // if all zeroes, shortcut -- this avoids dequantizing 0s and IDCTing - if (d[ 8]==0 && d[16]==0 && d[24]==0 && d[32]==0 - && d[40]==0 && d[48]==0 && d[56]==0) { - // no shortcut 0 seconds - // (1|2|3|4|5|6|7)==0 0 seconds - // all separate -0.047 seconds - // 1 && 2|3 && 4|5 && 6|7: -0.047 seconds - int dcterm = d[0] << 2; - v[0] = v[8] = v[16] = v[24] = v[32] = v[40] = v[48] = v[56] = dcterm; - } else { - STBI__IDCT_1D(d[ 0],d[ 8],d[16],d[24],d[32],d[40],d[48],d[56]) - // constants scaled things up by 1<<12; let's bring them back - // down, but keep 2 extra bits of precision - x0 += 512; x1 += 512; x2 += 512; x3 += 512; - v[ 0] = (x0+t3) >> 10; - v[56] = (x0-t3) >> 10; - v[ 8] = (x1+t2) >> 10; - v[48] = (x1-t2) >> 10; - v[16] = (x2+t1) >> 10; - v[40] = (x2-t1) >> 10; - v[24] = (x3+t0) >> 10; - v[32] = (x3-t0) >> 10; - } - } - - for (i=0, v=val, o=out; i < 8; ++i,v+=8,o+=out_stride) { - // no fast case since the first 1D IDCT spread components out - STBI__IDCT_1D(v[0],v[1],v[2],v[3],v[4],v[5],v[6],v[7]) - // constants scaled things up by 1<<12, plus we had 1<<2 from first - // loop, plus horizontal and vertical each scale by sqrt(8) so together - // we've got an extra 1<<3, so 1<<17 total we need to remove. - // so we want to round that, which means adding 0.5 * 1<<17, - // aka 65536. Also, we'll end up with -128 to 127 that we want - // to encode as 0..255 by adding 128, so we'll add that before the shift - x0 += 65536 + (128<<17); - x1 += 65536 + (128<<17); - x2 += 65536 + (128<<17); - x3 += 65536 + (128<<17); - // tried computing the shifts into temps, or'ing the temps to see - // if any were out of range, but that was slower - o[0] = stbi__clamp((x0+t3) >> 17); - o[7] = stbi__clamp((x0-t3) >> 17); - o[1] = stbi__clamp((x1+t2) >> 17); - o[6] = stbi__clamp((x1-t2) >> 17); - o[2] = stbi__clamp((x2+t1) >> 17); - o[5] = stbi__clamp((x2-t1) >> 17); - o[3] = stbi__clamp((x3+t0) >> 17); - o[4] = stbi__clamp((x3-t0) >> 17); - } -} - -#ifdef STBI_SSE2 -// sse2 integer IDCT. not the fastest possible implementation but it -// produces bit-identical results to the generic C version so it's -// fully "transparent". -static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) -{ - // This is constructed to match our regular (generic) integer IDCT exactly. - __m128i row0, row1, row2, row3, row4, row5, row6, row7; - __m128i tmp; - - // dot product constant: even elems=x, odd elems=y - #define dct_const(x,y) _mm_setr_epi16((x),(y),(x),(y),(x),(y),(x),(y)) - - // out(0) = c0[even]*x + c0[odd]*y (c0, x, y 16-bit, out 32-bit) - // out(1) = c1[even]*x + c1[odd]*y - #define dct_rot(out0,out1, x,y,c0,c1) \ - __m128i c0##lo = _mm_unpacklo_epi16((x),(y)); \ - __m128i c0##hi = _mm_unpackhi_epi16((x),(y)); \ - __m128i out0##_l = _mm_madd_epi16(c0##lo, c0); \ - __m128i out0##_h = _mm_madd_epi16(c0##hi, c0); \ - __m128i out1##_l = _mm_madd_epi16(c0##lo, c1); \ - __m128i out1##_h = _mm_madd_epi16(c0##hi, c1) - - // out = in << 12 (in 16-bit, out 32-bit) - #define dct_widen(out, in) \ - __m128i out##_l = _mm_srai_epi32(_mm_unpacklo_epi16(_mm_setzero_si128(), (in)), 4); \ - __m128i out##_h = _mm_srai_epi32(_mm_unpackhi_epi16(_mm_setzero_si128(), (in)), 4) - - // wide add - #define dct_wadd(out, a, b) \ - __m128i out##_l = _mm_add_epi32(a##_l, b##_l); \ - __m128i out##_h = _mm_add_epi32(a##_h, b##_h) - - // wide sub - #define dct_wsub(out, a, b) \ - __m128i out##_l = _mm_sub_epi32(a##_l, b##_l); \ - __m128i out##_h = _mm_sub_epi32(a##_h, b##_h) - - // butterfly a/b, add bias, then shift by "s" and pack - #define dct_bfly32o(out0, out1, a,b,bias,s) \ - { \ - __m128i abiased_l = _mm_add_epi32(a##_l, bias); \ - __m128i abiased_h = _mm_add_epi32(a##_h, bias); \ - dct_wadd(sum, abiased, b); \ - dct_wsub(dif, abiased, b); \ - out0 = _mm_packs_epi32(_mm_srai_epi32(sum_l, s), _mm_srai_epi32(sum_h, s)); \ - out1 = _mm_packs_epi32(_mm_srai_epi32(dif_l, s), _mm_srai_epi32(dif_h, s)); \ - } - - // 8-bit interleave step (for transposes) - #define dct_interleave8(a, b) \ - tmp = a; \ - a = _mm_unpacklo_epi8(a, b); \ - b = _mm_unpackhi_epi8(tmp, b) - - // 16-bit interleave step (for transposes) - #define dct_interleave16(a, b) \ - tmp = a; \ - a = _mm_unpacklo_epi16(a, b); \ - b = _mm_unpackhi_epi16(tmp, b) - - #define dct_pass(bias,shift) \ - { \ - /* even part */ \ - dct_rot(t2e,t3e, row2,row6, rot0_0,rot0_1); \ - __m128i sum04 = _mm_add_epi16(row0, row4); \ - __m128i dif04 = _mm_sub_epi16(row0, row4); \ - dct_widen(t0e, sum04); \ - dct_widen(t1e, dif04); \ - dct_wadd(x0, t0e, t3e); \ - dct_wsub(x3, t0e, t3e); \ - dct_wadd(x1, t1e, t2e); \ - dct_wsub(x2, t1e, t2e); \ - /* odd part */ \ - dct_rot(y0o,y2o, row7,row3, rot2_0,rot2_1); \ - dct_rot(y1o,y3o, row5,row1, rot3_0,rot3_1); \ - __m128i sum17 = _mm_add_epi16(row1, row7); \ - __m128i sum35 = _mm_add_epi16(row3, row5); \ - dct_rot(y4o,y5o, sum17,sum35, rot1_0,rot1_1); \ - dct_wadd(x4, y0o, y4o); \ - dct_wadd(x5, y1o, y5o); \ - dct_wadd(x6, y2o, y5o); \ - dct_wadd(x7, y3o, y4o); \ - dct_bfly32o(row0,row7, x0,x7,bias,shift); \ - dct_bfly32o(row1,row6, x1,x6,bias,shift); \ - dct_bfly32o(row2,row5, x2,x5,bias,shift); \ - dct_bfly32o(row3,row4, x3,x4,bias,shift); \ - } - - __m128i rot0_0 = dct_const(stbi__f2f(0.5411961f), stbi__f2f(0.5411961f) + stbi__f2f(-1.847759065f)); - __m128i rot0_1 = dct_const(stbi__f2f(0.5411961f) + stbi__f2f( 0.765366865f), stbi__f2f(0.5411961f)); - __m128i rot1_0 = dct_const(stbi__f2f(1.175875602f) + stbi__f2f(-0.899976223f), stbi__f2f(1.175875602f)); - __m128i rot1_1 = dct_const(stbi__f2f(1.175875602f), stbi__f2f(1.175875602f) + stbi__f2f(-2.562915447f)); - __m128i rot2_0 = dct_const(stbi__f2f(-1.961570560f) + stbi__f2f( 0.298631336f), stbi__f2f(-1.961570560f)); - __m128i rot2_1 = dct_const(stbi__f2f(-1.961570560f), stbi__f2f(-1.961570560f) + stbi__f2f( 3.072711026f)); - __m128i rot3_0 = dct_const(stbi__f2f(-0.390180644f) + stbi__f2f( 2.053119869f), stbi__f2f(-0.390180644f)); - __m128i rot3_1 = dct_const(stbi__f2f(-0.390180644f), stbi__f2f(-0.390180644f) + stbi__f2f( 1.501321110f)); - - // rounding biases in column/row passes, see stbi__idct_block for explanation. - __m128i bias_0 = _mm_set1_epi32(512); - __m128i bias_1 = _mm_set1_epi32(65536 + (128<<17)); - - // load - row0 = _mm_load_si128((const __m128i *) (data + 0*8)); - row1 = _mm_load_si128((const __m128i *) (data + 1*8)); - row2 = _mm_load_si128((const __m128i *) (data + 2*8)); - row3 = _mm_load_si128((const __m128i *) (data + 3*8)); - row4 = _mm_load_si128((const __m128i *) (data + 4*8)); - row5 = _mm_load_si128((const __m128i *) (data + 5*8)); - row6 = _mm_load_si128((const __m128i *) (data + 6*8)); - row7 = _mm_load_si128((const __m128i *) (data + 7*8)); - - // column pass - dct_pass(bias_0, 10); - - { - // 16bit 8x8 transpose pass 1 - dct_interleave16(row0, row4); - dct_interleave16(row1, row5); - dct_interleave16(row2, row6); - dct_interleave16(row3, row7); - - // transpose pass 2 - dct_interleave16(row0, row2); - dct_interleave16(row1, row3); - dct_interleave16(row4, row6); - dct_interleave16(row5, row7); - - // transpose pass 3 - dct_interleave16(row0, row1); - dct_interleave16(row2, row3); - dct_interleave16(row4, row5); - dct_interleave16(row6, row7); - } - - // row pass - dct_pass(bias_1, 17); - - { - // pack - __m128i p0 = _mm_packus_epi16(row0, row1); // a0a1a2a3...a7b0b1b2b3...b7 - __m128i p1 = _mm_packus_epi16(row2, row3); - __m128i p2 = _mm_packus_epi16(row4, row5); - __m128i p3 = _mm_packus_epi16(row6, row7); - - // 8bit 8x8 transpose pass 1 - dct_interleave8(p0, p2); // a0e0a1e1... - dct_interleave8(p1, p3); // c0g0c1g1... - - // transpose pass 2 - dct_interleave8(p0, p1); // a0c0e0g0... - dct_interleave8(p2, p3); // b0d0f0h0... - - // transpose pass 3 - dct_interleave8(p0, p2); // a0b0c0d0... - dct_interleave8(p1, p3); // a4b4c4d4... - - // store - _mm_storel_epi64((__m128i *) out, p0); out += out_stride; - _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p0, 0x4e)); out += out_stride; - _mm_storel_epi64((__m128i *) out, p2); out += out_stride; - _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p2, 0x4e)); out += out_stride; - _mm_storel_epi64((__m128i *) out, p1); out += out_stride; - _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p1, 0x4e)); out += out_stride; - _mm_storel_epi64((__m128i *) out, p3); out += out_stride; - _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p3, 0x4e)); - } - -#undef dct_const -#undef dct_rot -#undef dct_widen -#undef dct_wadd -#undef dct_wsub -#undef dct_bfly32o -#undef dct_interleave8 -#undef dct_interleave16 -#undef dct_pass -} - -#endif // STBI_SSE2 - -#ifdef STBI_NEON - -// NEON integer IDCT. should produce bit-identical -// results to the generic C version. -static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) -{ - int16x8_t row0, row1, row2, row3, row4, row5, row6, row7; - - int16x4_t rot0_0 = vdup_n_s16(stbi__f2f(0.5411961f)); - int16x4_t rot0_1 = vdup_n_s16(stbi__f2f(-1.847759065f)); - int16x4_t rot0_2 = vdup_n_s16(stbi__f2f( 0.765366865f)); - int16x4_t rot1_0 = vdup_n_s16(stbi__f2f( 1.175875602f)); - int16x4_t rot1_1 = vdup_n_s16(stbi__f2f(-0.899976223f)); - int16x4_t rot1_2 = vdup_n_s16(stbi__f2f(-2.562915447f)); - int16x4_t rot2_0 = vdup_n_s16(stbi__f2f(-1.961570560f)); - int16x4_t rot2_1 = vdup_n_s16(stbi__f2f(-0.390180644f)); - int16x4_t rot3_0 = vdup_n_s16(stbi__f2f( 0.298631336f)); - int16x4_t rot3_1 = vdup_n_s16(stbi__f2f( 2.053119869f)); - int16x4_t rot3_2 = vdup_n_s16(stbi__f2f( 3.072711026f)); - int16x4_t rot3_3 = vdup_n_s16(stbi__f2f( 1.501321110f)); - -#define dct_long_mul(out, inq, coeff) \ - int32x4_t out##_l = vmull_s16(vget_low_s16(inq), coeff); \ - int32x4_t out##_h = vmull_s16(vget_high_s16(inq), coeff) - -#define dct_long_mac(out, acc, inq, coeff) \ - int32x4_t out##_l = vmlal_s16(acc##_l, vget_low_s16(inq), coeff); \ - int32x4_t out##_h = vmlal_s16(acc##_h, vget_high_s16(inq), coeff) - -#define dct_widen(out, inq) \ - int32x4_t out##_l = vshll_n_s16(vget_low_s16(inq), 12); \ - int32x4_t out##_h = vshll_n_s16(vget_high_s16(inq), 12) - -// wide add -#define dct_wadd(out, a, b) \ - int32x4_t out##_l = vaddq_s32(a##_l, b##_l); \ - int32x4_t out##_h = vaddq_s32(a##_h, b##_h) - -// wide sub -#define dct_wsub(out, a, b) \ - int32x4_t out##_l = vsubq_s32(a##_l, b##_l); \ - int32x4_t out##_h = vsubq_s32(a##_h, b##_h) - -// butterfly a/b, then shift using "shiftop" by "s" and pack -#define dct_bfly32o(out0,out1, a,b,shiftop,s) \ - { \ - dct_wadd(sum, a, b); \ - dct_wsub(dif, a, b); \ - out0 = vcombine_s16(shiftop(sum_l, s), shiftop(sum_h, s)); \ - out1 = vcombine_s16(shiftop(dif_l, s), shiftop(dif_h, s)); \ - } - -#define dct_pass(shiftop, shift) \ - { \ - /* even part */ \ - int16x8_t sum26 = vaddq_s16(row2, row6); \ - dct_long_mul(p1e, sum26, rot0_0); \ - dct_long_mac(t2e, p1e, row6, rot0_1); \ - dct_long_mac(t3e, p1e, row2, rot0_2); \ - int16x8_t sum04 = vaddq_s16(row0, row4); \ - int16x8_t dif04 = vsubq_s16(row0, row4); \ - dct_widen(t0e, sum04); \ - dct_widen(t1e, dif04); \ - dct_wadd(x0, t0e, t3e); \ - dct_wsub(x3, t0e, t3e); \ - dct_wadd(x1, t1e, t2e); \ - dct_wsub(x2, t1e, t2e); \ - /* odd part */ \ - int16x8_t sum15 = vaddq_s16(row1, row5); \ - int16x8_t sum17 = vaddq_s16(row1, row7); \ - int16x8_t sum35 = vaddq_s16(row3, row5); \ - int16x8_t sum37 = vaddq_s16(row3, row7); \ - int16x8_t sumodd = vaddq_s16(sum17, sum35); \ - dct_long_mul(p5o, sumodd, rot1_0); \ - dct_long_mac(p1o, p5o, sum17, rot1_1); \ - dct_long_mac(p2o, p5o, sum35, rot1_2); \ - dct_long_mul(p3o, sum37, rot2_0); \ - dct_long_mul(p4o, sum15, rot2_1); \ - dct_wadd(sump13o, p1o, p3o); \ - dct_wadd(sump24o, p2o, p4o); \ - dct_wadd(sump23o, p2o, p3o); \ - dct_wadd(sump14o, p1o, p4o); \ - dct_long_mac(x4, sump13o, row7, rot3_0); \ - dct_long_mac(x5, sump24o, row5, rot3_1); \ - dct_long_mac(x6, sump23o, row3, rot3_2); \ - dct_long_mac(x7, sump14o, row1, rot3_3); \ - dct_bfly32o(row0,row7, x0,x7,shiftop,shift); \ - dct_bfly32o(row1,row6, x1,x6,shiftop,shift); \ - dct_bfly32o(row2,row5, x2,x5,shiftop,shift); \ - dct_bfly32o(row3,row4, x3,x4,shiftop,shift); \ - } - - // load - row0 = vld1q_s16(data + 0*8); - row1 = vld1q_s16(data + 1*8); - row2 = vld1q_s16(data + 2*8); - row3 = vld1q_s16(data + 3*8); - row4 = vld1q_s16(data + 4*8); - row5 = vld1q_s16(data + 5*8); - row6 = vld1q_s16(data + 6*8); - row7 = vld1q_s16(data + 7*8); - - // add DC bias - row0 = vaddq_s16(row0, vsetq_lane_s16(1024, vdupq_n_s16(0), 0)); - - // column pass - dct_pass(vrshrn_n_s32, 10); - - // 16bit 8x8 transpose - { -// these three map to a single VTRN.16, VTRN.32, and VSWP, respectively. -// whether compilers actually get this is another story, sadly. -#define dct_trn16(x, y) { int16x8x2_t t = vtrnq_s16(x, y); x = t.val[0]; y = t.val[1]; } -#define dct_trn32(x, y) { int32x4x2_t t = vtrnq_s32(vreinterpretq_s32_s16(x), vreinterpretq_s32_s16(y)); x = vreinterpretq_s16_s32(t.val[0]); y = vreinterpretq_s16_s32(t.val[1]); } -#define dct_trn64(x, y) { int16x8_t x0 = x; int16x8_t y0 = y; x = vcombine_s16(vget_low_s16(x0), vget_low_s16(y0)); y = vcombine_s16(vget_high_s16(x0), vget_high_s16(y0)); } - - // pass 1 - dct_trn16(row0, row1); // a0b0a2b2a4b4a6b6 - dct_trn16(row2, row3); - dct_trn16(row4, row5); - dct_trn16(row6, row7); - - // pass 2 - dct_trn32(row0, row2); // a0b0c0d0a4b4c4d4 - dct_trn32(row1, row3); - dct_trn32(row4, row6); - dct_trn32(row5, row7); - - // pass 3 - dct_trn64(row0, row4); // a0b0c0d0e0f0g0h0 - dct_trn64(row1, row5); - dct_trn64(row2, row6); - dct_trn64(row3, row7); - -#undef dct_trn16 -#undef dct_trn32 -#undef dct_trn64 - } - - // row pass - // vrshrn_n_s32 only supports shifts up to 16, we need - // 17. so do a non-rounding shift of 16 first then follow - // up with a rounding shift by 1. - dct_pass(vshrn_n_s32, 16); - - { - // pack and round - uint8x8_t p0 = vqrshrun_n_s16(row0, 1); - uint8x8_t p1 = vqrshrun_n_s16(row1, 1); - uint8x8_t p2 = vqrshrun_n_s16(row2, 1); - uint8x8_t p3 = vqrshrun_n_s16(row3, 1); - uint8x8_t p4 = vqrshrun_n_s16(row4, 1); - uint8x8_t p5 = vqrshrun_n_s16(row5, 1); - uint8x8_t p6 = vqrshrun_n_s16(row6, 1); - uint8x8_t p7 = vqrshrun_n_s16(row7, 1); - - // again, these can translate into one instruction, but often don't. -#define dct_trn8_8(x, y) { uint8x8x2_t t = vtrn_u8(x, y); x = t.val[0]; y = t.val[1]; } -#define dct_trn8_16(x, y) { uint16x4x2_t t = vtrn_u16(vreinterpret_u16_u8(x), vreinterpret_u16_u8(y)); x = vreinterpret_u8_u16(t.val[0]); y = vreinterpret_u8_u16(t.val[1]); } -#define dct_trn8_32(x, y) { uint32x2x2_t t = vtrn_u32(vreinterpret_u32_u8(x), vreinterpret_u32_u8(y)); x = vreinterpret_u8_u32(t.val[0]); y = vreinterpret_u8_u32(t.val[1]); } - - // sadly can't use interleaved stores here since we only write - // 8 bytes to each scan line! - - // 8x8 8-bit transpose pass 1 - dct_trn8_8(p0, p1); - dct_trn8_8(p2, p3); - dct_trn8_8(p4, p5); - dct_trn8_8(p6, p7); - - // pass 2 - dct_trn8_16(p0, p2); - dct_trn8_16(p1, p3); - dct_trn8_16(p4, p6); - dct_trn8_16(p5, p7); - - // pass 3 - dct_trn8_32(p0, p4); - dct_trn8_32(p1, p5); - dct_trn8_32(p2, p6); - dct_trn8_32(p3, p7); - - // store - vst1_u8(out, p0); out += out_stride; - vst1_u8(out, p1); out += out_stride; - vst1_u8(out, p2); out += out_stride; - vst1_u8(out, p3); out += out_stride; - vst1_u8(out, p4); out += out_stride; - vst1_u8(out, p5); out += out_stride; - vst1_u8(out, p6); out += out_stride; - vst1_u8(out, p7); - -#undef dct_trn8_8 -#undef dct_trn8_16 -#undef dct_trn8_32 - } - -#undef dct_long_mul -#undef dct_long_mac -#undef dct_widen -#undef dct_wadd -#undef dct_wsub -#undef dct_bfly32o -#undef dct_pass -} - -#endif // STBI_NEON - -#define STBI__MARKER_none 0xff -// if there's a pending marker from the entropy stream, return that -// otherwise, fetch from the stream and get a marker. if there's no -// marker, return 0xff, which is never a valid marker value -static stbi_uc stbi__get_marker(stbi__jpeg *j) -{ - stbi_uc x; - if (j->marker != STBI__MARKER_none) { x = j->marker; j->marker = STBI__MARKER_none; return x; } - x = stbi__get8(j->s); - if (x != 0xff) return STBI__MARKER_none; - while (x == 0xff) - x = stbi__get8(j->s); // consume repeated 0xff fill bytes - return x; -} - -// in each scan, we'll have scan_n components, and the order -// of the components is specified by order[] -#define STBI__RESTART(x) ((x) >= 0xd0 && (x) <= 0xd7) - -// after a restart interval, stbi__jpeg_reset the entropy decoder and -// the dc prediction -static void stbi__jpeg_reset(stbi__jpeg *j) -{ - j->code_bits = 0; - j->code_buffer = 0; - j->nomore = 0; - j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = j->img_comp[3].dc_pred = 0; - j->marker = STBI__MARKER_none; - j->todo = j->restart_interval ? j->restart_interval : 0x7fffffff; - j->eob_run = 0; - // no more than 1<<31 MCUs if no restart_interal? that's plenty safe, - // since we don't even allow 1<<30 pixels -} - -static int stbi__parse_entropy_coded_data(stbi__jpeg *z) -{ - stbi__jpeg_reset(z); - if (!z->progressive) { - if (z->scan_n == 1) { - int i,j; - STBI_SIMD_ALIGN(short, data[64]); - int n = z->order[0]; - // non-interleaved data, we just need to process one block at a time, - // in trivial scanline order - // number of blocks to do just depends on how many actual "pixels" this - // component has, independent of interleaved MCU blocking and such - int w = (z->img_comp[n].x+7) >> 3; - int h = (z->img_comp[n].y+7) >> 3; - for (j=0; j < h; ++j) { - for (i=0; i < w; ++i) { - int ha = z->img_comp[n].ha; - if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; - z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); - // every data block is an MCU, so countdown the restart interval - if (--z->todo <= 0) { - if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); - // if it's NOT a restart, then just bail, so we get corrupt data - // rather than no data - if (!STBI__RESTART(z->marker)) return 1; - stbi__jpeg_reset(z); - } - } - } - return 1; - } else { // interleaved - int i,j,k,x,y; - STBI_SIMD_ALIGN(short, data[64]); - for (j=0; j < z->img_mcu_y; ++j) { - for (i=0; i < z->img_mcu_x; ++i) { - // scan an interleaved mcu... process scan_n components in order - for (k=0; k < z->scan_n; ++k) { - int n = z->order[k]; - // scan out an mcu's worth of this component; that's just determined - // by the basic H and V specified for the component - for (y=0; y < z->img_comp[n].v; ++y) { - for (x=0; x < z->img_comp[n].h; ++x) { - int x2 = (i*z->img_comp[n].h + x)*8; - int y2 = (j*z->img_comp[n].v + y)*8; - int ha = z->img_comp[n].ha; - if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; - z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data); - } - } - } - // after all interleaved components, that's an interleaved MCU, - // so now count down the restart interval - if (--z->todo <= 0) { - if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); - if (!STBI__RESTART(z->marker)) return 1; - stbi__jpeg_reset(z); - } - } - } - return 1; - } - } else { - if (z->scan_n == 1) { - int i,j; - int n = z->order[0]; - // non-interleaved data, we just need to process one block at a time, - // in trivial scanline order - // number of blocks to do just depends on how many actual "pixels" this - // component has, independent of interleaved MCU blocking and such - int w = (z->img_comp[n].x+7) >> 3; - int h = (z->img_comp[n].y+7) >> 3; - for (j=0; j < h; ++j) { - for (i=0; i < w; ++i) { - short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); - if (z->spec_start == 0) { - if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) - return 0; - } else { - int ha = z->img_comp[n].ha; - if (!stbi__jpeg_decode_block_prog_ac(z, data, &z->huff_ac[ha], z->fast_ac[ha])) - return 0; - } - // every data block is an MCU, so countdown the restart interval - if (--z->todo <= 0) { - if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); - if (!STBI__RESTART(z->marker)) return 1; - stbi__jpeg_reset(z); - } - } - } - return 1; - } else { // interleaved - int i,j,k,x,y; - for (j=0; j < z->img_mcu_y; ++j) { - for (i=0; i < z->img_mcu_x; ++i) { - // scan an interleaved mcu... process scan_n components in order - for (k=0; k < z->scan_n; ++k) { - int n = z->order[k]; - // scan out an mcu's worth of this component; that's just determined - // by the basic H and V specified for the component - for (y=0; y < z->img_comp[n].v; ++y) { - for (x=0; x < z->img_comp[n].h; ++x) { - int x2 = (i*z->img_comp[n].h + x); - int y2 = (j*z->img_comp[n].v + y); - short *data = z->img_comp[n].coeff + 64 * (x2 + y2 * z->img_comp[n].coeff_w); - if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) - return 0; - } - } - } - // after all interleaved components, that's an interleaved MCU, - // so now count down the restart interval - if (--z->todo <= 0) { - if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); - if (!STBI__RESTART(z->marker)) return 1; - stbi__jpeg_reset(z); - } - } - } - return 1; - } - } -} - -static void stbi__jpeg_dequantize(short *data, stbi__uint16 *dequant) -{ - int i; - for (i=0; i < 64; ++i) - data[i] *= dequant[i]; -} - -static void stbi__jpeg_finish(stbi__jpeg *z) -{ - if (z->progressive) { - // dequantize and idct the data - int i,j,n; - for (n=0; n < z->s->img_n; ++n) { - int w = (z->img_comp[n].x+7) >> 3; - int h = (z->img_comp[n].y+7) >> 3; - for (j=0; j < h; ++j) { - for (i=0; i < w; ++i) { - short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); - stbi__jpeg_dequantize(data, z->dequant[z->img_comp[n].tq]); - z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); - } - } - } - } -} - -static int stbi__process_marker(stbi__jpeg *z, int m) -{ - int L; - switch (m) { - case STBI__MARKER_none: // no marker found - return stbi__err("expected marker","Corrupt JPEG"); - - case 0xDD: // DRI - specify restart interval - if (stbi__get16be(z->s) != 4) return stbi__err("bad DRI len","Corrupt JPEG"); - z->restart_interval = stbi__get16be(z->s); - return 1; - - case 0xDB: // DQT - define quantization table - L = stbi__get16be(z->s)-2; - while (L > 0) { - int q = stbi__get8(z->s); - int p = q >> 4, sixteen = (p != 0); - int t = q & 15,i; - if (p != 0 && p != 1) return stbi__err("bad DQT type","Corrupt JPEG"); - if (t > 3) return stbi__err("bad DQT table","Corrupt JPEG"); - - for (i=0; i < 64; ++i) - z->dequant[t][stbi__jpeg_dezigzag[i]] = (stbi__uint16)(sixteen ? stbi__get16be(z->s) : stbi__get8(z->s)); - L -= (sixteen ? 129 : 65); - } - return L==0; - - case 0xC4: // DHT - define huffman table - L = stbi__get16be(z->s)-2; - while (L > 0) { - stbi_uc *v; - int sizes[16],i,n=0; - int q = stbi__get8(z->s); - int tc = q >> 4; - int th = q & 15; - if (tc > 1 || th > 3) return stbi__err("bad DHT header","Corrupt JPEG"); - for (i=0; i < 16; ++i) { - sizes[i] = stbi__get8(z->s); - n += sizes[i]; - } - L -= 17; - if (tc == 0) { - if (!stbi__build_huffman(z->huff_dc+th, sizes)) return 0; - v = z->huff_dc[th].values; - } else { - if (!stbi__build_huffman(z->huff_ac+th, sizes)) return 0; - v = z->huff_ac[th].values; - } - for (i=0; i < n; ++i) - v[i] = stbi__get8(z->s); - if (tc != 0) - stbi__build_fast_ac(z->fast_ac[th], z->huff_ac + th); - L -= n; - } - return L==0; - } - - // check for comment block or APP blocks - if ((m >= 0xE0 && m <= 0xEF) || m == 0xFE) { - L = stbi__get16be(z->s); - if (L < 2) { - if (m == 0xFE) - return stbi__err("bad COM len","Corrupt JPEG"); - else - return stbi__err("bad APP len","Corrupt JPEG"); - } - L -= 2; - - if (m == 0xE0 && L >= 5) { // JFIF APP0 segment - static const unsigned char tag[5] = {'J','F','I','F','\0'}; - int ok = 1; - int i; - for (i=0; i < 5; ++i) - if (stbi__get8(z->s) != tag[i]) - ok = 0; - L -= 5; - if (ok) - z->jfif = 1; - } else if (m == 0xEE && L >= 12) { // Adobe APP14 segment - static const unsigned char tag[6] = {'A','d','o','b','e','\0'}; - int ok = 1; - int i; - for (i=0; i < 6; ++i) - if (stbi__get8(z->s) != tag[i]) - ok = 0; - L -= 6; - if (ok) { - stbi__get8(z->s); // version - stbi__get16be(z->s); // flags0 - stbi__get16be(z->s); // flags1 - z->app14_color_transform = stbi__get8(z->s); // color transform - L -= 6; - } - } - - stbi__skip(z->s, L); - return 1; - } - - return stbi__err("unknown marker","Corrupt JPEG"); -} - -// after we see SOS -static int stbi__process_scan_header(stbi__jpeg *z) -{ - int i; - int Ls = stbi__get16be(z->s); - z->scan_n = stbi__get8(z->s); - if (z->scan_n < 1 || z->scan_n > 4 || z->scan_n > (int) z->s->img_n) return stbi__err("bad SOS component count","Corrupt JPEG"); - if (Ls != 6+2*z->scan_n) return stbi__err("bad SOS len","Corrupt JPEG"); - for (i=0; i < z->scan_n; ++i) { - int id = stbi__get8(z->s), which; - int q = stbi__get8(z->s); - for (which = 0; which < z->s->img_n; ++which) - if (z->img_comp[which].id == id) - break; - if (which == z->s->img_n) return 0; // no match - z->img_comp[which].hd = q >> 4; if (z->img_comp[which].hd > 3) return stbi__err("bad DC huff","Corrupt JPEG"); - z->img_comp[which].ha = q & 15; if (z->img_comp[which].ha > 3) return stbi__err("bad AC huff","Corrupt JPEG"); - z->order[i] = which; - } - - { - int aa; - z->spec_start = stbi__get8(z->s); - z->spec_end = stbi__get8(z->s); // should be 63, but might be 0 - aa = stbi__get8(z->s); - z->succ_high = (aa >> 4); - z->succ_low = (aa & 15); - if (z->progressive) { - if (z->spec_start > 63 || z->spec_end > 63 || z->spec_start > z->spec_end || z->succ_high > 13 || z->succ_low > 13) - return stbi__err("bad SOS", "Corrupt JPEG"); - } else { - if (z->spec_start != 0) return stbi__err("bad SOS","Corrupt JPEG"); - if (z->succ_high != 0 || z->succ_low != 0) return stbi__err("bad SOS","Corrupt JPEG"); - z->spec_end = 63; - } - } - - return 1; -} - -static int stbi__free_jpeg_components(stbi__jpeg *z, int ncomp, int why) -{ - int i; - for (i=0; i < ncomp; ++i) { - if (z->img_comp[i].raw_data) { - STBI_FREE(z->img_comp[i].raw_data); - z->img_comp[i].raw_data = NULL; - z->img_comp[i].data = NULL; - } - if (z->img_comp[i].raw_coeff) { - STBI_FREE(z->img_comp[i].raw_coeff); - z->img_comp[i].raw_coeff = 0; - z->img_comp[i].coeff = 0; - } - if (z->img_comp[i].linebuf) { - STBI_FREE(z->img_comp[i].linebuf); - z->img_comp[i].linebuf = NULL; - } - } - return why; -} - -static int stbi__process_frame_header(stbi__jpeg *z, int scan) -{ - stbi__context *s = z->s; - int Lf,p,i,q, h_max=1,v_max=1,c; - Lf = stbi__get16be(s); if (Lf < 11) return stbi__err("bad SOF len","Corrupt JPEG"); // JPEG - p = stbi__get8(s); if (p != 8) return stbi__err("only 8-bit","JPEG format not supported: 8-bit only"); // JPEG baseline - s->img_y = stbi__get16be(s); if (s->img_y == 0) return stbi__err("no header height", "JPEG format not supported: delayed height"); // Legal, but we don't handle it--but neither does IJG - s->img_x = stbi__get16be(s); if (s->img_x == 0) return stbi__err("0 width","Corrupt JPEG"); // JPEG requires - c = stbi__get8(s); - if (c != 3 && c != 1 && c != 4) return stbi__err("bad component count","Corrupt JPEG"); - s->img_n = c; - for (i=0; i < c; ++i) { - z->img_comp[i].data = NULL; - z->img_comp[i].linebuf = NULL; - } - - if (Lf != 8+3*s->img_n) return stbi__err("bad SOF len","Corrupt JPEG"); - - z->rgb = 0; - for (i=0; i < s->img_n; ++i) { - static unsigned char rgb[3] = { 'R', 'G', 'B' }; - z->img_comp[i].id = stbi__get8(s); - if (s->img_n == 3 && z->img_comp[i].id == rgb[i]) - ++z->rgb; - q = stbi__get8(s); - z->img_comp[i].h = (q >> 4); if (!z->img_comp[i].h || z->img_comp[i].h > 4) return stbi__err("bad H","Corrupt JPEG"); - z->img_comp[i].v = q & 15; if (!z->img_comp[i].v || z->img_comp[i].v > 4) return stbi__err("bad V","Corrupt JPEG"); - z->img_comp[i].tq = stbi__get8(s); if (z->img_comp[i].tq > 3) return stbi__err("bad TQ","Corrupt JPEG"); - } - - if (scan != STBI__SCAN_load) return 1; - - if (!stbi__mad3sizes_valid(s->img_x, s->img_y, s->img_n, 0)) return stbi__err("too large", "Image too large to decode"); - - for (i=0; i < s->img_n; ++i) { - if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h; - if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v; - } - - // compute interleaved mcu info - z->img_h_max = h_max; - z->img_v_max = v_max; - z->img_mcu_w = h_max * 8; - z->img_mcu_h = v_max * 8; - // these sizes can't be more than 17 bits - z->img_mcu_x = (s->img_x + z->img_mcu_w-1) / z->img_mcu_w; - z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h; - - for (i=0; i < s->img_n; ++i) { - // number of effective pixels (e.g. for non-interleaved MCU) - z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max; - z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max; - // to simplify generation, we'll allocate enough memory to decode - // the bogus oversized data from using interleaved MCUs and their - // big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't - // discard the extra data until colorspace conversion - // - // img_mcu_x, img_mcu_y: <=17 bits; comp[i].h and .v are <=4 (checked earlier) - // so these muls can't overflow with 32-bit ints (which we require) - z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8; - z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8; - z->img_comp[i].coeff = 0; - z->img_comp[i].raw_coeff = 0; - z->img_comp[i].linebuf = NULL; - z->img_comp[i].raw_data = stbi__malloc_mad2(z->img_comp[i].w2, z->img_comp[i].h2, 15); - if (z->img_comp[i].raw_data == NULL) - return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); - // align blocks for idct using mmx/sse - z->img_comp[i].data = (stbi_uc*) (((size_t) z->img_comp[i].raw_data + 15) & ~15); - if (z->progressive) { - // w2, h2 are multiples of 8 (see above) - z->img_comp[i].coeff_w = z->img_comp[i].w2 / 8; - z->img_comp[i].coeff_h = z->img_comp[i].h2 / 8; - z->img_comp[i].raw_coeff = stbi__malloc_mad3(z->img_comp[i].w2, z->img_comp[i].h2, 2, 15); - if (z->img_comp[i].raw_coeff == NULL) - return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); - z->img_comp[i].coeff = (short*) (((size_t) z->img_comp[i].raw_coeff + 15) & ~15); - } - } - - return 1; -} - -// use comparisons since in some cases we handle more than one case (e.g. SOF) -#define stbi__DNL(x) ((x) == 0xdc) -#define stbi__SOI(x) ((x) == 0xd8) -#define stbi__EOI(x) ((x) == 0xd9) -#define stbi__SOF(x) ((x) == 0xc0 || (x) == 0xc1 || (x) == 0xc2) -#define stbi__SOS(x) ((x) == 0xda) - -#define stbi__SOF_progressive(x) ((x) == 0xc2) - -static int stbi__decode_jpeg_header(stbi__jpeg *z, int scan) -{ - int m; - z->jfif = 0; - z->app14_color_transform = -1; // valid values are 0,1,2 - z->marker = STBI__MARKER_none; // initialize cached marker to empty - m = stbi__get_marker(z); - if (!stbi__SOI(m)) return stbi__err("no SOI","Corrupt JPEG"); - if (scan == STBI__SCAN_type) return 1; - m = stbi__get_marker(z); - while (!stbi__SOF(m)) { - if (!stbi__process_marker(z,m)) return 0; - m = stbi__get_marker(z); - while (m == STBI__MARKER_none) { - // some files have extra padding after their blocks, so ok, we'll scan - if (stbi__at_eof(z->s)) return stbi__err("no SOF", "Corrupt JPEG"); - m = stbi__get_marker(z); - } - } - z->progressive = stbi__SOF_progressive(m); - if (!stbi__process_frame_header(z, scan)) return 0; - return 1; -} - -// decode image to YCbCr format -static int stbi__decode_jpeg_image(stbi__jpeg *j) -{ - int m; - for (m = 0; m < 4; m++) { - j->img_comp[m].raw_data = NULL; - j->img_comp[m].raw_coeff = NULL; - } - j->restart_interval = 0; - if (!stbi__decode_jpeg_header(j, STBI__SCAN_load)) return 0; - m = stbi__get_marker(j); - while (!stbi__EOI(m)) { - if (stbi__SOS(m)) { - if (!stbi__process_scan_header(j)) return 0; - if (!stbi__parse_entropy_coded_data(j)) return 0; - if (j->marker == STBI__MARKER_none ) { - // handle 0s at the end of image data from IP Kamera 9060 - while (!stbi__at_eof(j->s)) { - int x = stbi__get8(j->s); - if (x == 255) { - j->marker = stbi__get8(j->s); - break; - } - } - // if we reach eof without hitting a marker, stbi__get_marker() below will fail and we'll eventually return 0 - } - } else if (stbi__DNL(m)) { - int Ld = stbi__get16be(j->s); - stbi__uint32 NL = stbi__get16be(j->s); - if (Ld != 4) stbi__err("bad DNL len", "Corrupt JPEG"); - if (NL != j->s->img_y) stbi__err("bad DNL height", "Corrupt JPEG"); - } else { - if (!stbi__process_marker(j, m)) return 0; - } - m = stbi__get_marker(j); - } - if (j->progressive) - stbi__jpeg_finish(j); - return 1; -} - -// static jfif-centered resampling (across block boundaries) - -typedef stbi_uc *(*resample_row_func)(stbi_uc *out, stbi_uc *in0, stbi_uc *in1, - int w, int hs); - -#define stbi__div4(x) ((stbi_uc) ((x) >> 2)) - -static stbi_uc *resample_row_1(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - STBI_NOTUSED(out); - STBI_NOTUSED(in_far); - STBI_NOTUSED(w); - STBI_NOTUSED(hs); - return in_near; -} - -static stbi_uc* stbi__resample_row_v_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - // need to generate two samples vertically for every one in input - int i; - STBI_NOTUSED(hs); - for (i=0; i < w; ++i) - out[i] = stbi__div4(3*in_near[i] + in_far[i] + 2); - return out; -} - -static stbi_uc* stbi__resample_row_h_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - // need to generate two samples horizontally for every one in input - int i; - stbi_uc *input = in_near; - - if (w == 1) { - // if only one sample, can't do any interpolation - out[0] = out[1] = input[0]; - return out; - } - - out[0] = input[0]; - out[1] = stbi__div4(input[0]*3 + input[1] + 2); - for (i=1; i < w-1; ++i) { - int n = 3*input[i]+2; - out[i*2+0] = stbi__div4(n+input[i-1]); - out[i*2+1] = stbi__div4(n+input[i+1]); - } - out[i*2+0] = stbi__div4(input[w-2]*3 + input[w-1] + 2); - out[i*2+1] = input[w-1]; - - STBI_NOTUSED(in_far); - STBI_NOTUSED(hs); - - return out; -} - -#define stbi__div16(x) ((stbi_uc) ((x) >> 4)) - -static stbi_uc *stbi__resample_row_hv_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - // need to generate 2x2 samples for every one in input - int i,t0,t1; - if (w == 1) { - out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); - return out; - } - - t1 = 3*in_near[0] + in_far[0]; - out[0] = stbi__div4(t1+2); - for (i=1; i < w; ++i) { - t0 = t1; - t1 = 3*in_near[i]+in_far[i]; - out[i*2-1] = stbi__div16(3*t0 + t1 + 8); - out[i*2 ] = stbi__div16(3*t1 + t0 + 8); - } - out[w*2-1] = stbi__div4(t1+2); - - STBI_NOTUSED(hs); - - return out; -} - -#if defined(STBI_SSE2) || defined(STBI_NEON) -static stbi_uc *stbi__resample_row_hv_2_simd(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - // need to generate 2x2 samples for every one in input - int i=0,t0,t1; - - if (w == 1) { - out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); - return out; - } - - t1 = 3*in_near[0] + in_far[0]; - // process groups of 8 pixels for as long as we can. - // note we can't handle the last pixel in a row in this loop - // because we need to handle the filter boundary conditions. - for (; i < ((w-1) & ~7); i += 8) { -#if defined(STBI_SSE2) - // load and perform the vertical filtering pass - // this uses 3*x + y = 4*x + (y - x) - __m128i zero = _mm_setzero_si128(); - __m128i farb = _mm_loadl_epi64((__m128i *) (in_far + i)); - __m128i nearb = _mm_loadl_epi64((__m128i *) (in_near + i)); - __m128i farw = _mm_unpacklo_epi8(farb, zero); - __m128i nearw = _mm_unpacklo_epi8(nearb, zero); - __m128i diff = _mm_sub_epi16(farw, nearw); - __m128i nears = _mm_slli_epi16(nearw, 2); - __m128i curr = _mm_add_epi16(nears, diff); // current row - - // horizontal filter works the same based on shifted vers of current - // row. "prev" is current row shifted right by 1 pixel; we need to - // insert the previous pixel value (from t1). - // "next" is current row shifted left by 1 pixel, with first pixel - // of next block of 8 pixels added in. - __m128i prv0 = _mm_slli_si128(curr, 2); - __m128i nxt0 = _mm_srli_si128(curr, 2); - __m128i prev = _mm_insert_epi16(prv0, t1, 0); - __m128i next = _mm_insert_epi16(nxt0, 3*in_near[i+8] + in_far[i+8], 7); - - // horizontal filter, polyphase implementation since it's convenient: - // even pixels = 3*cur + prev = cur*4 + (prev - cur) - // odd pixels = 3*cur + next = cur*4 + (next - cur) - // note the shared term. - __m128i bias = _mm_set1_epi16(8); - __m128i curs = _mm_slli_epi16(curr, 2); - __m128i prvd = _mm_sub_epi16(prev, curr); - __m128i nxtd = _mm_sub_epi16(next, curr); - __m128i curb = _mm_add_epi16(curs, bias); - __m128i even = _mm_add_epi16(prvd, curb); - __m128i odd = _mm_add_epi16(nxtd, curb); - - // interleave even and odd pixels, then undo scaling. - __m128i int0 = _mm_unpacklo_epi16(even, odd); - __m128i int1 = _mm_unpackhi_epi16(even, odd); - __m128i de0 = _mm_srli_epi16(int0, 4); - __m128i de1 = _mm_srli_epi16(int1, 4); - - // pack and write output - __m128i outv = _mm_packus_epi16(de0, de1); - _mm_storeu_si128((__m128i *) (out + i*2), outv); -#elif defined(STBI_NEON) - // load and perform the vertical filtering pass - // this uses 3*x + y = 4*x + (y - x) - uint8x8_t farb = vld1_u8(in_far + i); - uint8x8_t nearb = vld1_u8(in_near + i); - int16x8_t diff = vreinterpretq_s16_u16(vsubl_u8(farb, nearb)); - int16x8_t nears = vreinterpretq_s16_u16(vshll_n_u8(nearb, 2)); - int16x8_t curr = vaddq_s16(nears, diff); // current row - - // horizontal filter works the same based on shifted vers of current - // row. "prev" is current row shifted right by 1 pixel; we need to - // insert the previous pixel value (from t1). - // "next" is current row shifted left by 1 pixel, with first pixel - // of next block of 8 pixels added in. - int16x8_t prv0 = vextq_s16(curr, curr, 7); - int16x8_t nxt0 = vextq_s16(curr, curr, 1); - int16x8_t prev = vsetq_lane_s16(t1, prv0, 0); - int16x8_t next = vsetq_lane_s16(3*in_near[i+8] + in_far[i+8], nxt0, 7); - - // horizontal filter, polyphase implementation since it's convenient: - // even pixels = 3*cur + prev = cur*4 + (prev - cur) - // odd pixels = 3*cur + next = cur*4 + (next - cur) - // note the shared term. - int16x8_t curs = vshlq_n_s16(curr, 2); - int16x8_t prvd = vsubq_s16(prev, curr); - int16x8_t nxtd = vsubq_s16(next, curr); - int16x8_t even = vaddq_s16(curs, prvd); - int16x8_t odd = vaddq_s16(curs, nxtd); - - // undo scaling and round, then store with even/odd phases interleaved - uint8x8x2_t o; - o.val[0] = vqrshrun_n_s16(even, 4); - o.val[1] = vqrshrun_n_s16(odd, 4); - vst2_u8(out + i*2, o); -#endif - - // "previous" value for next iter - t1 = 3*in_near[i+7] + in_far[i+7]; - } - - t0 = t1; - t1 = 3*in_near[i] + in_far[i]; - out[i*2] = stbi__div16(3*t1 + t0 + 8); - - for (++i; i < w; ++i) { - t0 = t1; - t1 = 3*in_near[i]+in_far[i]; - out[i*2-1] = stbi__div16(3*t0 + t1 + 8); - out[i*2 ] = stbi__div16(3*t1 + t0 + 8); - } - out[w*2-1] = stbi__div4(t1+2); - - STBI_NOTUSED(hs); - - return out; -} -#endif - -static stbi_uc *stbi__resample_row_generic(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - // resample with nearest-neighbor - int i,j; - STBI_NOTUSED(in_far); - for (i=0; i < w; ++i) - for (j=0; j < hs; ++j) - out[i*hs+j] = in_near[i]; - return out; -} - -// this is a reduced-precision calculation of YCbCr-to-RGB introduced -// to make sure the code produces the same results in both SIMD and scalar -#define stbi__float2fixed(x) (((int) ((x) * 4096.0f + 0.5f)) << 8) -static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) -{ - int i; - for (i=0; i < count; ++i) { - int y_fixed = (y[i] << 20) + (1<<19); // rounding - int r,g,b; - int cr = pcr[i] - 128; - int cb = pcb[i] - 128; - r = y_fixed + cr* stbi__float2fixed(1.40200f); - g = y_fixed + (cr*-stbi__float2fixed(0.71414f)) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); - b = y_fixed + cb* stbi__float2fixed(1.77200f); - r >>= 20; - g >>= 20; - b >>= 20; - if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } - if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } - if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } - out[0] = (stbi_uc)r; - out[1] = (stbi_uc)g; - out[2] = (stbi_uc)b; - out[3] = 255; - out += step; - } -} - -#if defined(STBI_SSE2) || defined(STBI_NEON) -static void stbi__YCbCr_to_RGB_simd(stbi_uc *out, stbi_uc const *y, stbi_uc const *pcb, stbi_uc const *pcr, int count, int step) -{ - int i = 0; - -#ifdef STBI_SSE2 - // step == 3 is pretty ugly on the final interleave, and i'm not convinced - // it's useful in practice (you wouldn't use it for textures, for example). - // so just accelerate step == 4 case. - if (step == 4) { - // this is a fairly straightforward implementation and not super-optimized. - __m128i signflip = _mm_set1_epi8(-0x80); - __m128i cr_const0 = _mm_set1_epi16( (short) ( 1.40200f*4096.0f+0.5f)); - __m128i cr_const1 = _mm_set1_epi16( - (short) ( 0.71414f*4096.0f+0.5f)); - __m128i cb_const0 = _mm_set1_epi16( - (short) ( 0.34414f*4096.0f+0.5f)); - __m128i cb_const1 = _mm_set1_epi16( (short) ( 1.77200f*4096.0f+0.5f)); - __m128i y_bias = _mm_set1_epi8((char) (unsigned char) 128); - __m128i xw = _mm_set1_epi16(255); // alpha channel - - for (; i+7 < count; i += 8) { - // load - __m128i y_bytes = _mm_loadl_epi64((__m128i *) (y+i)); - __m128i cr_bytes = _mm_loadl_epi64((__m128i *) (pcr+i)); - __m128i cb_bytes = _mm_loadl_epi64((__m128i *) (pcb+i)); - __m128i cr_biased = _mm_xor_si128(cr_bytes, signflip); // -128 - __m128i cb_biased = _mm_xor_si128(cb_bytes, signflip); // -128 - - // unpack to short (and left-shift cr, cb by 8) - __m128i yw = _mm_unpacklo_epi8(y_bias, y_bytes); - __m128i crw = _mm_unpacklo_epi8(_mm_setzero_si128(), cr_biased); - __m128i cbw = _mm_unpacklo_epi8(_mm_setzero_si128(), cb_biased); - - // color transform - __m128i yws = _mm_srli_epi16(yw, 4); - __m128i cr0 = _mm_mulhi_epi16(cr_const0, crw); - __m128i cb0 = _mm_mulhi_epi16(cb_const0, cbw); - __m128i cb1 = _mm_mulhi_epi16(cbw, cb_const1); - __m128i cr1 = _mm_mulhi_epi16(crw, cr_const1); - __m128i rws = _mm_add_epi16(cr0, yws); - __m128i gwt = _mm_add_epi16(cb0, yws); - __m128i bws = _mm_add_epi16(yws, cb1); - __m128i gws = _mm_add_epi16(gwt, cr1); - - // descale - __m128i rw = _mm_srai_epi16(rws, 4); - __m128i bw = _mm_srai_epi16(bws, 4); - __m128i gw = _mm_srai_epi16(gws, 4); - - // back to byte, set up for transpose - __m128i brb = _mm_packus_epi16(rw, bw); - __m128i gxb = _mm_packus_epi16(gw, xw); - - // transpose to interleave channels - __m128i t0 = _mm_unpacklo_epi8(brb, gxb); - __m128i t1 = _mm_unpackhi_epi8(brb, gxb); - __m128i o0 = _mm_unpacklo_epi16(t0, t1); - __m128i o1 = _mm_unpackhi_epi16(t0, t1); - - // store - _mm_storeu_si128((__m128i *) (out + 0), o0); - _mm_storeu_si128((__m128i *) (out + 16), o1); - out += 32; - } - } -#endif - -#ifdef STBI_NEON - // in this version, step=3 support would be easy to add. but is there demand? - if (step == 4) { - // this is a fairly straightforward implementation and not super-optimized. - uint8x8_t signflip = vdup_n_u8(0x80); - int16x8_t cr_const0 = vdupq_n_s16( (short) ( 1.40200f*4096.0f+0.5f)); - int16x8_t cr_const1 = vdupq_n_s16( - (short) ( 0.71414f*4096.0f+0.5f)); - int16x8_t cb_const0 = vdupq_n_s16( - (short) ( 0.34414f*4096.0f+0.5f)); - int16x8_t cb_const1 = vdupq_n_s16( (short) ( 1.77200f*4096.0f+0.5f)); - - for (; i+7 < count; i += 8) { - // load - uint8x8_t y_bytes = vld1_u8(y + i); - uint8x8_t cr_bytes = vld1_u8(pcr + i); - uint8x8_t cb_bytes = vld1_u8(pcb + i); - int8x8_t cr_biased = vreinterpret_s8_u8(vsub_u8(cr_bytes, signflip)); - int8x8_t cb_biased = vreinterpret_s8_u8(vsub_u8(cb_bytes, signflip)); - - // expand to s16 - int16x8_t yws = vreinterpretq_s16_u16(vshll_n_u8(y_bytes, 4)); - int16x8_t crw = vshll_n_s8(cr_biased, 7); - int16x8_t cbw = vshll_n_s8(cb_biased, 7); - - // color transform - int16x8_t cr0 = vqdmulhq_s16(crw, cr_const0); - int16x8_t cb0 = vqdmulhq_s16(cbw, cb_const0); - int16x8_t cr1 = vqdmulhq_s16(crw, cr_const1); - int16x8_t cb1 = vqdmulhq_s16(cbw, cb_const1); - int16x8_t rws = vaddq_s16(yws, cr0); - int16x8_t gws = vaddq_s16(vaddq_s16(yws, cb0), cr1); - int16x8_t bws = vaddq_s16(yws, cb1); - - // undo scaling, round, convert to byte - uint8x8x4_t o; - o.val[0] = vqrshrun_n_s16(rws, 4); - o.val[1] = vqrshrun_n_s16(gws, 4); - o.val[2] = vqrshrun_n_s16(bws, 4); - o.val[3] = vdup_n_u8(255); - - // store, interleaving r/g/b/a - vst4_u8(out, o); - out += 8*4; - } - } -#endif - - for (; i < count; ++i) { - int y_fixed = (y[i] << 20) + (1<<19); // rounding - int r,g,b; - int cr = pcr[i] - 128; - int cb = pcb[i] - 128; - r = y_fixed + cr* stbi__float2fixed(1.40200f); - g = y_fixed + cr*-stbi__float2fixed(0.71414f) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); - b = y_fixed + cb* stbi__float2fixed(1.77200f); - r >>= 20; - g >>= 20; - b >>= 20; - if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } - if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } - if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } - out[0] = (stbi_uc)r; - out[1] = (stbi_uc)g; - out[2] = (stbi_uc)b; - out[3] = 255; - out += step; - } -} -#endif - -// set up the kernels -static void stbi__setup_jpeg(stbi__jpeg *j) -{ - j->idct_block_kernel = stbi__idct_block; - j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_row; - j->resample_row_hv_2_kernel = stbi__resample_row_hv_2; - -#ifdef STBI_SSE2 - if (stbi__sse2_available()) { - j->idct_block_kernel = stbi__idct_simd; - j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; - j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; - } -#endif - -#ifdef STBI_NEON - j->idct_block_kernel = stbi__idct_simd; - j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; - j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; -#endif -} - -// clean up the temporary component buffers -static void stbi__cleanup_jpeg(stbi__jpeg *j) -{ - stbi__free_jpeg_components(j, j->s->img_n, 0); -} - -typedef struct -{ - resample_row_func resample; - stbi_uc *line0,*line1; - int hs,vs; // expansion factor in each axis - int w_lores; // horizontal pixels pre-expansion - int ystep; // how far through vertical expansion we are - int ypos; // which pre-expansion row we're on -} stbi__resample; - -// fast 0..255 * 0..255 => 0..255 rounded multiplication -static stbi_uc stbi__blinn_8x8(stbi_uc x, stbi_uc y) -{ - unsigned int t = x*y + 128; - return (stbi_uc) ((t + (t >>8)) >> 8); -} - -static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp, int req_comp) -{ - int n, decode_n, is_rgb; - z->s->img_n = 0; // make stbi__cleanup_jpeg safe - - // validate req_comp - if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); - - // load a jpeg image from whichever source, but leave in YCbCr format - if (!stbi__decode_jpeg_image(z)) { stbi__cleanup_jpeg(z); return NULL; } - - // determine actual number of components to generate - n = req_comp ? req_comp : z->s->img_n >= 3 ? 3 : 1; - - is_rgb = z->s->img_n == 3 && (z->rgb == 3 || (z->app14_color_transform == 0 && !z->jfif)); - - if (z->s->img_n == 3 && n < 3 && !is_rgb) - decode_n = 1; - else - decode_n = z->s->img_n; - - // resample and color-convert - { - int k; - unsigned int i,j; - stbi_uc *output; - stbi_uc *coutput[4]; - - stbi__resample res_comp[4]; - - for (k=0; k < decode_n; ++k) { - stbi__resample *r = &res_comp[k]; - - // allocate line buffer big enough for upsampling off the edges - // with upsample factor of 4 - z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3); - if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } - - r->hs = z->img_h_max / z->img_comp[k].h; - r->vs = z->img_v_max / z->img_comp[k].v; - r->ystep = r->vs >> 1; - r->w_lores = (z->s->img_x + r->hs-1) / r->hs; - r->ypos = 0; - r->line0 = r->line1 = z->img_comp[k].data; - - if (r->hs == 1 && r->vs == 1) r->resample = resample_row_1; - else if (r->hs == 1 && r->vs == 2) r->resample = stbi__resample_row_v_2; - else if (r->hs == 2 && r->vs == 1) r->resample = stbi__resample_row_h_2; - else if (r->hs == 2 && r->vs == 2) r->resample = z->resample_row_hv_2_kernel; - else r->resample = stbi__resample_row_generic; - } - - // can't error after this so, this is safe - output = (stbi_uc *) stbi__malloc_mad3(n, z->s->img_x, z->s->img_y, 1); - if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } - - // now go ahead and resample - for (j=0; j < z->s->img_y; ++j) { - stbi_uc *out = output + n * z->s->img_x * j; - for (k=0; k < decode_n; ++k) { - stbi__resample *r = &res_comp[k]; - int y_bot = r->ystep >= (r->vs >> 1); - coutput[k] = r->resample(z->img_comp[k].linebuf, - y_bot ? r->line1 : r->line0, - y_bot ? r->line0 : r->line1, - r->w_lores, r->hs); - if (++r->ystep >= r->vs) { - r->ystep = 0; - r->line0 = r->line1; - if (++r->ypos < z->img_comp[k].y) - r->line1 += z->img_comp[k].w2; - } - } - if (n >= 3) { - stbi_uc *y = coutput[0]; - if (z->s->img_n == 3) { - if (is_rgb) { - for (i=0; i < z->s->img_x; ++i) { - out[0] = y[i]; - out[1] = coutput[1][i]; - out[2] = coutput[2][i]; - out[3] = 255; - out += n; - } - } else { - z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); - } - } else if (z->s->img_n == 4) { - if (z->app14_color_transform == 0) { // CMYK - for (i=0; i < z->s->img_x; ++i) { - stbi_uc m = coutput[3][i]; - out[0] = stbi__blinn_8x8(coutput[0][i], m); - out[1] = stbi__blinn_8x8(coutput[1][i], m); - out[2] = stbi__blinn_8x8(coutput[2][i], m); - out[3] = 255; - out += n; - } - } else if (z->app14_color_transform == 2) { // YCCK - z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); - for (i=0; i < z->s->img_x; ++i) { - stbi_uc m = coutput[3][i]; - out[0] = stbi__blinn_8x8(255 - out[0], m); - out[1] = stbi__blinn_8x8(255 - out[1], m); - out[2] = stbi__blinn_8x8(255 - out[2], m); - out += n; - } - } else { // YCbCr + alpha? Ignore the fourth channel for now - z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); - } - } else - for (i=0; i < z->s->img_x; ++i) { - out[0] = out[1] = out[2] = y[i]; - out[3] = 255; // not used if n==3 - out += n; - } - } else { - if (is_rgb) { - if (n == 1) - for (i=0; i < z->s->img_x; ++i) - *out++ = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); - else { - for (i=0; i < z->s->img_x; ++i, out += 2) { - out[0] = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); - out[1] = 255; - } - } - } else if (z->s->img_n == 4 && z->app14_color_transform == 0) { - for (i=0; i < z->s->img_x; ++i) { - stbi_uc m = coutput[3][i]; - stbi_uc r = stbi__blinn_8x8(coutput[0][i], m); - stbi_uc g = stbi__blinn_8x8(coutput[1][i], m); - stbi_uc b = stbi__blinn_8x8(coutput[2][i], m); - out[0] = stbi__compute_y(r, g, b); - out[1] = 255; - out += n; - } - } else if (z->s->img_n == 4 && z->app14_color_transform == 2) { - for (i=0; i < z->s->img_x; ++i) { - out[0] = stbi__blinn_8x8(255 - coutput[0][i], coutput[3][i]); - out[1] = 255; - out += n; - } - } else { - stbi_uc *y = coutput[0]; - if (n == 1) - for (i=0; i < z->s->img_x; ++i) out[i] = y[i]; - else - for (i=0; i < z->s->img_x; ++i) *out++ = y[i], *out++ = 255; - } - } - } - stbi__cleanup_jpeg(z); - *out_x = z->s->img_x; - *out_y = z->s->img_y; - if (comp) *comp = z->s->img_n >= 3 ? 3 : 1; // report original components, not output - return output; - } -} - -static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - unsigned char* result; - stbi__jpeg* j = (stbi__jpeg*) stbi__malloc(sizeof(stbi__jpeg)); - STBI_NOTUSED(ri); - j->s = s; - stbi__setup_jpeg(j); - result = load_jpeg_image(j, x,y,comp,req_comp); - STBI_FREE(j); - return result; -} - -static int stbi__jpeg_test(stbi__context *s) -{ - int r; - stbi__jpeg* j = (stbi__jpeg*)stbi__malloc(sizeof(stbi__jpeg)); - j->s = s; - stbi__setup_jpeg(j); - r = stbi__decode_jpeg_header(j, STBI__SCAN_type); - stbi__rewind(s); - STBI_FREE(j); - return r; -} - -static int stbi__jpeg_info_raw(stbi__jpeg *j, int *x, int *y, int *comp) -{ - if (!stbi__decode_jpeg_header(j, STBI__SCAN_header)) { - stbi__rewind( j->s ); - return 0; - } - if (x) *x = j->s->img_x; - if (y) *y = j->s->img_y; - if (comp) *comp = j->s->img_n >= 3 ? 3 : 1; - return 1; -} - -static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp) -{ - int result; - stbi__jpeg* j = (stbi__jpeg*) (stbi__malloc(sizeof(stbi__jpeg))); - j->s = s; - result = stbi__jpeg_info_raw(j, x, y, comp); - STBI_FREE(j); - return result; -} -#endif - -// public domain zlib decode v0.2 Sean Barrett 2006-11-18 -// simple implementation -// - all input must be provided in an upfront buffer -// - all output is written to a single output buffer (can malloc/realloc) -// performance -// - fast huffman - -#ifndef STBI_NO_ZLIB - -// fast-way is faster to check than jpeg huffman, but slow way is slower -#define STBI__ZFAST_BITS 9 // accelerate all cases in default tables -#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1) - -// zlib-style huffman encoding -// (jpegs packs from left, zlib from right, so can't share code) -typedef struct -{ - stbi__uint16 fast[1 << STBI__ZFAST_BITS]; - stbi__uint16 firstcode[16]; - int maxcode[17]; - stbi__uint16 firstsymbol[16]; - stbi_uc size[288]; - stbi__uint16 value[288]; -} stbi__zhuffman; - -stbi_inline static int stbi__bitreverse16(int n) -{ - n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); - n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); - n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4); - n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8); - return n; -} - -stbi_inline static int stbi__bit_reverse(int v, int bits) -{ - STBI_ASSERT(bits <= 16); - // to bit reverse n bits, reverse 16 and shift - // e.g. 11 bits, bit reverse and shift away 5 - return stbi__bitreverse16(v) >> (16-bits); -} - -static int stbi__zbuild_huffman(stbi__zhuffman *z, const stbi_uc *sizelist, int num) -{ - int i,k=0; - int code, next_code[16], sizes[17]; - - // DEFLATE spec for generating codes - memset(sizes, 0, sizeof(sizes)); - memset(z->fast, 0, sizeof(z->fast)); - for (i=0; i < num; ++i) - ++sizes[sizelist[i]]; - sizes[0] = 0; - for (i=1; i < 16; ++i) - if (sizes[i] > (1 << i)) - return stbi__err("bad sizes", "Corrupt PNG"); - code = 0; - for (i=1; i < 16; ++i) { - next_code[i] = code; - z->firstcode[i] = (stbi__uint16) code; - z->firstsymbol[i] = (stbi__uint16) k; - code = (code + sizes[i]); - if (sizes[i]) - if (code-1 >= (1 << i)) return stbi__err("bad codelengths","Corrupt PNG"); - z->maxcode[i] = code << (16-i); // preshift for inner loop - code <<= 1; - k += sizes[i]; - } - z->maxcode[16] = 0x10000; // sentinel - for (i=0; i < num; ++i) { - int s = sizelist[i]; - if (s) { - int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; - stbi__uint16 fastv = (stbi__uint16) ((s << 9) | i); - z->size [c] = (stbi_uc ) s; - z->value[c] = (stbi__uint16) i; - if (s <= STBI__ZFAST_BITS) { - int j = stbi__bit_reverse(next_code[s],s); - while (j < (1 << STBI__ZFAST_BITS)) { - z->fast[j] = fastv; - j += (1 << s); - } - } - ++next_code[s]; - } - } - return 1; -} - -// zlib-from-memory implementation for PNG reading -// because PNG allows splitting the zlib stream arbitrarily, -// and it's annoying structurally to have PNG call ZLIB call PNG, -// we require PNG read all the IDATs and combine them into a single -// memory buffer - -typedef struct -{ - stbi_uc *zbuffer, *zbuffer_end; - int num_bits; - stbi__uint32 code_buffer; - - char *zout; - char *zout_start; - char *zout_end; - int z_expandable; - - stbi__zhuffman z_length, z_distance; -} stbi__zbuf; - -stbi_inline static stbi_uc stbi__zget8(stbi__zbuf *z) -{ - if (z->zbuffer >= z->zbuffer_end) return 0; - return *z->zbuffer++; -} - -static void stbi__fill_bits(stbi__zbuf *z) -{ - do { - STBI_ASSERT(z->code_buffer < (1U << z->num_bits)); - z->code_buffer |= (unsigned int) stbi__zget8(z) << z->num_bits; - z->num_bits += 8; - } while (z->num_bits <= 24); -} - -stbi_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n) -{ - unsigned int k; - if (z->num_bits < n) stbi__fill_bits(z); - k = z->code_buffer & ((1 << n) - 1); - z->code_buffer >>= n; - z->num_bits -= n; - return k; -} - -static int stbi__zhuffman_decode_slowpath(stbi__zbuf *a, stbi__zhuffman *z) -{ - int b,s,k; - // not resolved by fast table, so compute it the slow way - // use jpeg approach, which requires MSbits at top - k = stbi__bit_reverse(a->code_buffer, 16); - for (s=STBI__ZFAST_BITS+1; ; ++s) - if (k < z->maxcode[s]) - break; - if (s == 16) return -1; // invalid code! - // code size is s, so: - b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s]; - STBI_ASSERT(z->size[b] == s); - a->code_buffer >>= s; - a->num_bits -= s; - return z->value[b]; -} - -stbi_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) -{ - int b,s; - if (a->num_bits < 16) stbi__fill_bits(a); - b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; - if (b) { - s = b >> 9; - a->code_buffer >>= s; - a->num_bits -= s; - return b & 511; - } - return stbi__zhuffman_decode_slowpath(a, z); -} - -static int stbi__zexpand(stbi__zbuf *z, char *zout, int n) // need to make room for n bytes -{ - char *q; - int cur, limit, old_limit; - z->zout = zout; - if (!z->z_expandable) return stbi__err("output buffer limit","Corrupt PNG"); - cur = (int) (z->zout - z->zout_start); - limit = old_limit = (int) (z->zout_end - z->zout_start); - while (cur + n > limit) - limit *= 2; - q = (char *) STBI_REALLOC_SIZED(z->zout_start, old_limit, limit); - STBI_NOTUSED(old_limit); - if (q == NULL) return stbi__err("outofmem", "Out of memory"); - z->zout_start = q; - z->zout = q + cur; - z->zout_end = q + limit; - return 1; -} - -static int stbi__zlength_base[31] = { - 3,4,5,6,7,8,9,10,11,13, - 15,17,19,23,27,31,35,43,51,59, - 67,83,99,115,131,163,195,227,258,0,0 }; - -static int stbi__zlength_extra[31]= -{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; - -static int stbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, -257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; - -static int stbi__zdist_extra[32] = -{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; - -static int stbi__parse_huffman_block(stbi__zbuf *a) -{ - char *zout = a->zout; - for(;;) { - int z = stbi__zhuffman_decode(a, &a->z_length); - if (z < 256) { - if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); // error in huffman codes - if (zout >= a->zout_end) { - if (!stbi__zexpand(a, zout, 1)) return 0; - zout = a->zout; - } - *zout++ = (char) z; - } else { - stbi_uc *p; - int len,dist; - if (z == 256) { - a->zout = zout; - return 1; - } - z -= 257; - len = stbi__zlength_base[z]; - if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]); - z = stbi__zhuffman_decode(a, &a->z_distance); - if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); - dist = stbi__zdist_base[z]; - if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]); - if (zout - a->zout_start < dist) return stbi__err("bad dist","Corrupt PNG"); - if (zout + len > a->zout_end) { - if (!stbi__zexpand(a, zout, len)) return 0; - zout = a->zout; - } - p = (stbi_uc *) (zout - dist); - if (dist == 1) { // run of one byte; common in images. - stbi_uc v = *p; - if (len) { do *zout++ = v; while (--len); } - } else { - if (len) { do *zout++ = *p++; while (--len); } - } - } - } -} - -static const stbi_uc length_dezigzag[19] = { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 }; -static const stbi_uc stbi__zdefault_length[288] = -{ - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, - 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, - 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, - 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8 -}; -static const stbi_uc stbi__zdefault_distance[32] = -{ - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 -}; - -static int stbi__compute_huffman_codes(stbi__zbuf *a) -{ - stbi__zhuffman z_codelength; - stbi_uc lencodes[286+32+137];//padding for maximum single op - stbi_uc codelength_sizes[19]; - int i,n; - - int hlit = stbi__zreceive(a,5) + 257; - int hdist = stbi__zreceive(a,5) + 1; - int hclen = stbi__zreceive(a,4) + 4; - int ntot = hlit + hdist; - - memset(codelength_sizes, 0, sizeof(codelength_sizes)); - for (i=0; i < hclen; ++i) { - int s = stbi__zreceive(a,3); - codelength_sizes[length_dezigzag[i]] = (stbi_uc) s; - } - if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; - - n = 0; - while (n < ntot) { - int c = stbi__zhuffman_decode(a, &z_codelength); - if (c < 0 || c >= 19) return stbi__err("bad codelengths", "Corrupt PNG"); - if (c < 16) - lencodes[n++] = (stbi_uc) c; - else { - stbi_uc fill = 0; - if (c == 16) { - c = stbi__zreceive(a,2)+3; - if (n == 0) return stbi__err("bad codelengths", "Corrupt PNG"); - fill = lencodes[n-1]; - } else if (c == 17) - c = stbi__zreceive(a,3)+3; - else { - STBI_ASSERT(c == 18); - c = stbi__zreceive(a,7)+11; - } - if (ntot - n < c) return stbi__err("bad codelengths", "Corrupt PNG"); - memset(lencodes+n, fill, c); - n += c; - } - } - if (n != ntot) return stbi__err("bad codelengths","Corrupt PNG"); - if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; - if (!stbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; - return 1; -} - -static int stbi__parse_uncompressed_block(stbi__zbuf *a) -{ - stbi_uc header[4]; - int len,nlen,k; - if (a->num_bits & 7) - stbi__zreceive(a, a->num_bits & 7); // discard - // drain the bit-packed data into header - k = 0; - while (a->num_bits > 0) { - header[k++] = (stbi_uc) (a->code_buffer & 255); // suppress MSVC run-time check - a->code_buffer >>= 8; - a->num_bits -= 8; - } - STBI_ASSERT(a->num_bits == 0); - // now fill header the normal way - while (k < 4) - header[k++] = stbi__zget8(a); - len = header[1] * 256 + header[0]; - nlen = header[3] * 256 + header[2]; - if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt","Corrupt PNG"); - if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer","Corrupt PNG"); - if (a->zout + len > a->zout_end) - if (!stbi__zexpand(a, a->zout, len)) return 0; - memcpy(a->zout, a->zbuffer, len); - a->zbuffer += len; - a->zout += len; - return 1; -} - -static int stbi__parse_zlib_header(stbi__zbuf *a) -{ - int cmf = stbi__zget8(a); - int cm = cmf & 15; - /* int cinfo = cmf >> 4; */ - int flg = stbi__zget8(a); - if ((cmf*256+flg) % 31 != 0) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec - if (flg & 32) return stbi__err("no preset dict","Corrupt PNG"); // preset dictionary not allowed in png - if (cm != 8) return stbi__err("bad compression","Corrupt PNG"); // DEFLATE required for png - // window = 1 << (8 + cinfo)... but who cares, we fully buffer output - return 1; -} - -/* -Init algorithm: -{ - int i; // use <= to match clearly with spec - for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8; - for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9; - for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7; - for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8; - - for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5; -} -*/ - -static int stbi__parse_zlib(stbi__zbuf *a, int parse_header) -{ - int final, type; - if (parse_header) - if (!stbi__parse_zlib_header(a)) return 0; - a->num_bits = 0; - a->code_buffer = 0; - do { - final = stbi__zreceive(a,1); - type = stbi__zreceive(a,2); - if (type == 0) { - if (!stbi__parse_uncompressed_block(a)) return 0; - } else if (type == 3) { - return 0; - } else { - if (type == 1) { - // use fixed code lengths - if (!stbi__zbuild_huffman(&a->z_length , stbi__zdefault_length , 288)) return 0; - if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0; - } else { - if (!stbi__compute_huffman_codes(a)) return 0; - } - if (!stbi__parse_huffman_block(a)) return 0; - } - } while (!final); - return 1; -} - -static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) -{ - a->zout_start = obuf; - a->zout = obuf; - a->zout_end = obuf + olen; - a->z_expandable = exp; - - return stbi__parse_zlib(a, parse_header); -} - -STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen) -{ - stbi__zbuf a; - char *p = (char *) stbi__malloc(initial_size); - if (p == NULL) return NULL; - a.zbuffer = (stbi_uc *) buffer; - a.zbuffer_end = (stbi_uc *) buffer + len; - if (stbi__do_zlib(&a, p, initial_size, 1, 1)) { - if (outlen) *outlen = (int) (a.zout - a.zout_start); - return a.zout_start; - } else { - STBI_FREE(a.zout_start); - return NULL; - } -} - -STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen) -{ - return stbi_zlib_decode_malloc_guesssize(buffer, len, 16384, outlen); -} - -STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) -{ - stbi__zbuf a; - char *p = (char *) stbi__malloc(initial_size); - if (p == NULL) return NULL; - a.zbuffer = (stbi_uc *) buffer; - a.zbuffer_end = (stbi_uc *) buffer + len; - if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) { - if (outlen) *outlen = (int) (a.zout - a.zout_start); - return a.zout_start; - } else { - STBI_FREE(a.zout_start); - return NULL; - } -} - -STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer, int ilen) -{ - stbi__zbuf a; - a.zbuffer = (stbi_uc *) ibuffer; - a.zbuffer_end = (stbi_uc *) ibuffer + ilen; - if (stbi__do_zlib(&a, obuffer, olen, 0, 1)) - return (int) (a.zout - a.zout_start); - else - return -1; -} - -STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen) -{ - stbi__zbuf a; - char *p = (char *) stbi__malloc(16384); - if (p == NULL) return NULL; - a.zbuffer = (stbi_uc *) buffer; - a.zbuffer_end = (stbi_uc *) buffer+len; - if (stbi__do_zlib(&a, p, 16384, 1, 0)) { - if (outlen) *outlen = (int) (a.zout - a.zout_start); - return a.zout_start; - } else { - STBI_FREE(a.zout_start); - return NULL; - } -} - -STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen) -{ - stbi__zbuf a; - a.zbuffer = (stbi_uc *) ibuffer; - a.zbuffer_end = (stbi_uc *) ibuffer + ilen; - if (stbi__do_zlib(&a, obuffer, olen, 0, 0)) - return (int) (a.zout - a.zout_start); - else - return -1; -} -#endif - -// public domain "baseline" PNG decoder v0.10 Sean Barrett 2006-11-18 -// simple implementation -// - only 8-bit samples -// - no CRC checking -// - allocates lots of intermediate memory -// - avoids problem of streaming data between subsystems -// - avoids explicit window management -// performance -// - uses stb_zlib, a PD zlib implementation with fast huffman decoding - -#ifndef STBI_NO_PNG -typedef struct -{ - stbi__uint32 length; - stbi__uint32 type; -} stbi__pngchunk; - -static stbi__pngchunk stbi__get_chunk_header(stbi__context *s) -{ - stbi__pngchunk c; - c.length = stbi__get32be(s); - c.type = stbi__get32be(s); - return c; -} - -static stbi_uc png_sig[8] = { 137, 80, 78, 71, 13, 10, 26, 10 }; - -static int stbi__check_png_header(stbi__context *s) -{ - int i; - for (i=0; i < 8; ++i) - if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig","Not a PNG"); - return 1; -} - -typedef struct -{ - stbi__context *s; - stbi_uc *idata, *expanded, *out; - int depth; -} stbi__png; - - -enum { - STBI__F_none=0, - STBI__F_sub=1, - STBI__F_up=2, - STBI__F_avg=3, - STBI__F_paeth=4, - // synthetic filters used for first scanline to avoid needing a dummy row of 0s - STBI__F_avg_first, - STBI__F_paeth_first -}; - -static stbi_uc first_row_filter[5] = -{ - STBI__F_none, - STBI__F_sub, - STBI__F_none, - STBI__F_avg_first, - STBI__F_paeth_first -}; - -static int stbi__paeth(int a, int b, int c) -{ - int p = a + b - c; - int pa = abs(p-a); - int pb = abs(p-b); - int pc = abs(p-c); - if (pa <= pb && pa <= pc) return a; - if (pb <= pc) return b; - return c; -} - -static stbi_uc stbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 }; - -// create the png data from post-deflated data -static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y, int depth, int color) -{ - int bytes = (depth == 16? 2 : 1); - stbi__context *s = a->s; - stbi__uint32 i,j,stride = x*out_n*bytes; - stbi__uint32 img_len, img_width_bytes; - int k; - int img_n = s->img_n; // copy it into a local for later - - int output_bytes = out_n*bytes; - int filter_bytes = img_n*bytes; - int width = x; - - STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1); - a->out = (stbi_uc *) stbi__malloc_mad3(x, y, output_bytes, 0); // extra bytes to write off the end into - if (!a->out) return stbi__err("outofmem", "Out of memory"); - - img_width_bytes = (((img_n * x * depth) + 7) >> 3); - img_len = (img_width_bytes + 1) * y; - // we used to check for exact match between raw_len and img_len on non-interlaced PNGs, - // but issue #276 reported a PNG in the wild that had extra data at the end (all zeros), - // so just check for raw_len < img_len always. - if (raw_len < img_len) return stbi__err("not enough pixels","Corrupt PNG"); - - for (j=0; j < y; ++j) { - stbi_uc *cur = a->out + stride*j; - stbi_uc *prior; - int filter = *raw++; - - if (filter > 4) - return stbi__err("invalid filter","Corrupt PNG"); - - if (depth < 8) { - STBI_ASSERT(img_width_bytes <= x); - cur += x*out_n - img_width_bytes; // store output to the rightmost img_len bytes, so we can decode in place - filter_bytes = 1; - width = img_width_bytes; - } - prior = cur - stride; // bugfix: need to compute this after 'cur +=' computation above - - // if first row, use special filter that doesn't sample previous row - if (j == 0) filter = first_row_filter[filter]; - - // handle first byte explicitly - for (k=0; k < filter_bytes; ++k) { - switch (filter) { - case STBI__F_none : cur[k] = raw[k]; break; - case STBI__F_sub : cur[k] = raw[k]; break; - case STBI__F_up : cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; - case STBI__F_avg : cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); break; - case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(0,prior[k],0)); break; - case STBI__F_avg_first : cur[k] = raw[k]; break; - case STBI__F_paeth_first: cur[k] = raw[k]; break; - } - } - - if (depth == 8) { - if (img_n != out_n) - cur[img_n] = 255; // first pixel - raw += img_n; - cur += out_n; - prior += out_n; - } else if (depth == 16) { - if (img_n != out_n) { - cur[filter_bytes] = 255; // first pixel top byte - cur[filter_bytes+1] = 255; // first pixel bottom byte - } - raw += filter_bytes; - cur += output_bytes; - prior += output_bytes; - } else { - raw += 1; - cur += 1; - prior += 1; - } - - // this is a little gross, so that we don't switch per-pixel or per-component - if (depth < 8 || img_n == out_n) { - int nk = (width - 1)*filter_bytes; - #define STBI__CASE(f) \ - case f: \ - for (k=0; k < nk; ++k) - switch (filter) { - // "none" filter turns into a memcpy here; make that explicit. - case STBI__F_none: memcpy(cur, raw, nk); break; - STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k-filter_bytes]); } break; - STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; - STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-filter_bytes])>>1)); } break; - STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],prior[k],prior[k-filter_bytes])); } break; - STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k-filter_bytes] >> 1)); } break; - STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],0,0)); } break; - } - #undef STBI__CASE - raw += nk; - } else { - STBI_ASSERT(img_n+1 == out_n); - #define STBI__CASE(f) \ - case f: \ - for (i=x-1; i >= 1; --i, cur[filter_bytes]=255,raw+=filter_bytes,cur+=output_bytes,prior+=output_bytes) \ - for (k=0; k < filter_bytes; ++k) - switch (filter) { - STBI__CASE(STBI__F_none) { cur[k] = raw[k]; } break; - STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k- output_bytes]); } break; - STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; - STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k- output_bytes])>>1)); } break; - STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],prior[k],prior[k- output_bytes])); } break; - STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k- output_bytes] >> 1)); } break; - STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],0,0)); } break; - } - #undef STBI__CASE - - // the loop above sets the high byte of the pixels' alpha, but for - // 16 bit png files we also need the low byte set. we'll do that here. - if (depth == 16) { - cur = a->out + stride*j; // start at the beginning of the row again - for (i=0; i < x; ++i,cur+=output_bytes) { - cur[filter_bytes+1] = 255; - } - } - } - } - - // we make a separate pass to expand bits to pixels; for performance, - // this could run two scanlines behind the above code, so it won't - // intefere with filtering but will still be in the cache. - if (depth < 8) { - for (j=0; j < y; ++j) { - stbi_uc *cur = a->out + stride*j; - stbi_uc *in = a->out + stride*j + x*out_n - img_width_bytes; - // unpack 1/2/4-bit into a 8-bit buffer. allows us to keep the common 8-bit path optimal at minimal cost for 1/2/4-bit - // png guarante byte alignment, if width is not multiple of 8/4/2 we'll decode dummy trailing data that will be skipped in the later loop - stbi_uc scale = (color == 0) ? stbi__depth_scale_table[depth] : 1; // scale grayscale values to 0..255 range - - // note that the final byte might overshoot and write more data than desired. - // we can allocate enough data that this never writes out of memory, but it - // could also overwrite the next scanline. can it overwrite non-empty data - // on the next scanline? yes, consider 1-pixel-wide scanlines with 1-bit-per-pixel. - // so we need to explicitly clamp the final ones - - if (depth == 4) { - for (k=x*img_n; k >= 2; k-=2, ++in) { - *cur++ = scale * ((*in >> 4) ); - *cur++ = scale * ((*in ) & 0x0f); - } - if (k > 0) *cur++ = scale * ((*in >> 4) ); - } else if (depth == 2) { - for (k=x*img_n; k >= 4; k-=4, ++in) { - *cur++ = scale * ((*in >> 6) ); - *cur++ = scale * ((*in >> 4) & 0x03); - *cur++ = scale * ((*in >> 2) & 0x03); - *cur++ = scale * ((*in ) & 0x03); - } - if (k > 0) *cur++ = scale * ((*in >> 6) ); - if (k > 1) *cur++ = scale * ((*in >> 4) & 0x03); - if (k > 2) *cur++ = scale * ((*in >> 2) & 0x03); - } else if (depth == 1) { - for (k=x*img_n; k >= 8; k-=8, ++in) { - *cur++ = scale * ((*in >> 7) ); - *cur++ = scale * ((*in >> 6) & 0x01); - *cur++ = scale * ((*in >> 5) & 0x01); - *cur++ = scale * ((*in >> 4) & 0x01); - *cur++ = scale * ((*in >> 3) & 0x01); - *cur++ = scale * ((*in >> 2) & 0x01); - *cur++ = scale * ((*in >> 1) & 0x01); - *cur++ = scale * ((*in ) & 0x01); - } - if (k > 0) *cur++ = scale * ((*in >> 7) ); - if (k > 1) *cur++ = scale * ((*in >> 6) & 0x01); - if (k > 2) *cur++ = scale * ((*in >> 5) & 0x01); - if (k > 3) *cur++ = scale * ((*in >> 4) & 0x01); - if (k > 4) *cur++ = scale * ((*in >> 3) & 0x01); - if (k > 5) *cur++ = scale * ((*in >> 2) & 0x01); - if (k > 6) *cur++ = scale * ((*in >> 1) & 0x01); - } - if (img_n != out_n) { - int q; - // insert alpha = 255 - cur = a->out + stride*j; - if (img_n == 1) { - for (q=x-1; q >= 0; --q) { - cur[q*2+1] = 255; - cur[q*2+0] = cur[q]; - } - } else { - STBI_ASSERT(img_n == 3); - for (q=x-1; q >= 0; --q) { - cur[q*4+3] = 255; - cur[q*4+2] = cur[q*3+2]; - cur[q*4+1] = cur[q*3+1]; - cur[q*4+0] = cur[q*3+0]; - } - } - } - } - } else if (depth == 16) { - // force the image data from big-endian to platform-native. - // this is done in a separate pass due to the decoding relying - // on the data being untouched, but could probably be done - // per-line during decode if care is taken. - stbi_uc *cur = a->out; - stbi__uint16 *cur16 = (stbi__uint16*)cur; - - for(i=0; i < x*y*out_n; ++i,cur16++,cur+=2) { - *cur16 = (cur[0] << 8) | cur[1]; - } - } - - return 1; -} - -static int stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced) -{ - int bytes = (depth == 16 ? 2 : 1); - int out_bytes = out_n * bytes; - stbi_uc *final; - int p; - if (!interlaced) - return stbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); - - // de-interlacing - final = (stbi_uc *) stbi__malloc_mad3(a->s->img_x, a->s->img_y, out_bytes, 0); - for (p=0; p < 7; ++p) { - int xorig[] = { 0,4,0,2,0,1,0 }; - int yorig[] = { 0,0,4,0,2,0,1 }; - int xspc[] = { 8,8,4,4,2,2,1 }; - int yspc[] = { 8,8,8,4,4,2,2 }; - int i,j,x,y; - // pass1_x[4] = 0, pass1_x[5] = 1, pass1_x[12] = 1 - x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p]; - y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p]; - if (x && y) { - stbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; - if (!stbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { - STBI_FREE(final); - return 0; - } - for (j=0; j < y; ++j) { - for (i=0; i < x; ++i) { - int out_y = j*yspc[p]+yorig[p]; - int out_x = i*xspc[p]+xorig[p]; - memcpy(final + out_y*a->s->img_x*out_bytes + out_x*out_bytes, - a->out + (j*x+i)*out_bytes, out_bytes); - } - } - STBI_FREE(a->out); - image_data += img_len; - image_data_len -= img_len; - } - } - a->out = final; - - return 1; -} - -static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) -{ - stbi__context *s = z->s; - stbi__uint32 i, pixel_count = s->img_x * s->img_y; - stbi_uc *p = z->out; - - // compute color-based transparency, assuming we've - // already got 255 as the alpha value in the output - STBI_ASSERT(out_n == 2 || out_n == 4); - - if (out_n == 2) { - for (i=0; i < pixel_count; ++i) { - p[1] = (p[0] == tc[0] ? 0 : 255); - p += 2; - } - } else { - for (i=0; i < pixel_count; ++i) { - if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) - p[3] = 0; - p += 4; - } - } - return 1; -} - -static int stbi__compute_transparency16(stbi__png *z, stbi__uint16 tc[3], int out_n) -{ - stbi__context *s = z->s; - stbi__uint32 i, pixel_count = s->img_x * s->img_y; - stbi__uint16 *p = (stbi__uint16*) z->out; - - // compute color-based transparency, assuming we've - // already got 65535 as the alpha value in the output - STBI_ASSERT(out_n == 2 || out_n == 4); - - if (out_n == 2) { - for (i = 0; i < pixel_count; ++i) { - p[1] = (p[0] == tc[0] ? 0 : 65535); - p += 2; - } - } else { - for (i = 0; i < pixel_count; ++i) { - if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) - p[3] = 0; - p += 4; - } - } - return 1; -} - -static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n) -{ - stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; - stbi_uc *p, *temp_out, *orig = a->out; - - p = (stbi_uc *) stbi__malloc_mad2(pixel_count, pal_img_n, 0); - if (p == NULL) return stbi__err("outofmem", "Out of memory"); - - // between here and free(out) below, exitting would leak - temp_out = p; - - if (pal_img_n == 3) { - for (i=0; i < pixel_count; ++i) { - int n = orig[i]*4; - p[0] = palette[n ]; - p[1] = palette[n+1]; - p[2] = palette[n+2]; - p += 3; - } - } else { - for (i=0; i < pixel_count; ++i) { - int n = orig[i]*4; - p[0] = palette[n ]; - p[1] = palette[n+1]; - p[2] = palette[n+2]; - p[3] = palette[n+3]; - p += 4; - } - } - STBI_FREE(a->out); - a->out = temp_out; - - STBI_NOTUSED(len); - - return 1; -} - -static int stbi__unpremultiply_on_load = 0; -static int stbi__de_iphone_flag = 0; - -STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply) -{ - stbi__unpremultiply_on_load = flag_true_if_should_unpremultiply; -} - -STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert) -{ - stbi__de_iphone_flag = flag_true_if_should_convert; -} - -static void stbi__de_iphone(stbi__png *z) -{ - stbi__context *s = z->s; - stbi__uint32 i, pixel_count = s->img_x * s->img_y; - stbi_uc *p = z->out; - - if (s->img_out_n == 3) { // convert bgr to rgb - for (i=0; i < pixel_count; ++i) { - stbi_uc t = p[0]; - p[0] = p[2]; - p[2] = t; - p += 3; - } - } else { - STBI_ASSERT(s->img_out_n == 4); - if (stbi__unpremultiply_on_load) { - // convert bgr to rgb and unpremultiply - for (i=0; i < pixel_count; ++i) { - stbi_uc a = p[3]; - stbi_uc t = p[0]; - if (a) { - stbi_uc half = a / 2; - p[0] = (p[2] * 255 + half) / a; - p[1] = (p[1] * 255 + half) / a; - p[2] = ( t * 255 + half) / a; - } else { - p[0] = p[2]; - p[2] = t; - } - p += 4; - } - } else { - // convert bgr to rgb - for (i=0; i < pixel_count; ++i) { - stbi_uc t = p[0]; - p[0] = p[2]; - p[2] = t; - p += 4; - } - } - } -} - -#define STBI__PNG_TYPE(a,b,c,d) (((a) << 24) + ((b) << 16) + ((c) << 8) + (d)) - -static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) -{ - stbi_uc palette[1024], pal_img_n=0; - stbi_uc has_trans=0, tc[3]; - stbi__uint16 tc16[3]; - stbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; - int first=1,k,interlace=0, color=0, is_iphone=0; - stbi__context *s = z->s; - - z->expanded = NULL; - z->idata = NULL; - z->out = NULL; - - if (!stbi__check_png_header(s)) return 0; - - if (scan == STBI__SCAN_type) return 1; - - for (;;) { - stbi__pngchunk c = stbi__get_chunk_header(s); - switch (c.type) { - case STBI__PNG_TYPE('C','g','B','I'): - is_iphone = 1; - stbi__skip(s, c.length); - break; - case STBI__PNG_TYPE('I','H','D','R'): { - int comp,filter; - if (!first) return stbi__err("multiple IHDR","Corrupt PNG"); - first = 0; - if (c.length != 13) return stbi__err("bad IHDR len","Corrupt PNG"); - s->img_x = stbi__get32be(s); if (s->img_x > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); - s->img_y = stbi__get32be(s); if (s->img_y > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); - z->depth = stbi__get8(s); if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) return stbi__err("1/2/4/8/16-bit only","PNG not supported: 1/2/4/8/16-bit only"); - color = stbi__get8(s); if (color > 6) return stbi__err("bad ctype","Corrupt PNG"); - if (color == 3 && z->depth == 16) return stbi__err("bad ctype","Corrupt PNG"); - if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype","Corrupt PNG"); - comp = stbi__get8(s); if (comp) return stbi__err("bad comp method","Corrupt PNG"); - filter= stbi__get8(s); if (filter) return stbi__err("bad filter method","Corrupt PNG"); - interlace = stbi__get8(s); if (interlace>1) return stbi__err("bad interlace method","Corrupt PNG"); - if (!s->img_x || !s->img_y) return stbi__err("0-pixel image","Corrupt PNG"); - if (!pal_img_n) { - s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); - if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); - if (scan == STBI__SCAN_header) return 1; - } else { - // if paletted, then pal_n is our final components, and - // img_n is # components to decompress/filter. - s->img_n = 1; - if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large","Corrupt PNG"); - // if SCAN_header, have to scan to see if we have a tRNS - } - break; - } - - case STBI__PNG_TYPE('P','L','T','E'): { - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (c.length > 256*3) return stbi__err("invalid PLTE","Corrupt PNG"); - pal_len = c.length / 3; - if (pal_len * 3 != c.length) return stbi__err("invalid PLTE","Corrupt PNG"); - for (i=0; i < pal_len; ++i) { - palette[i*4+0] = stbi__get8(s); - palette[i*4+1] = stbi__get8(s); - palette[i*4+2] = stbi__get8(s); - palette[i*4+3] = 255; - } - break; - } - - case STBI__PNG_TYPE('t','R','N','S'): { - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (z->idata) return stbi__err("tRNS after IDAT","Corrupt PNG"); - if (pal_img_n) { - if (scan == STBI__SCAN_header) { s->img_n = 4; return 1; } - if (pal_len == 0) return stbi__err("tRNS before PLTE","Corrupt PNG"); - if (c.length > pal_len) return stbi__err("bad tRNS len","Corrupt PNG"); - pal_img_n = 4; - for (i=0; i < c.length; ++i) - palette[i*4+3] = stbi__get8(s); - } else { - if (!(s->img_n & 1)) return stbi__err("tRNS with alpha","Corrupt PNG"); - if (c.length != (stbi__uint32) s->img_n*2) return stbi__err("bad tRNS len","Corrupt PNG"); - has_trans = 1; - if (z->depth == 16) { - for (k = 0; k < s->img_n; ++k) tc16[k] = (stbi__uint16)stbi__get16be(s); // copy the values as-is - } else { - for (k = 0; k < s->img_n; ++k) tc[k] = (stbi_uc)(stbi__get16be(s) & 255) * stbi__depth_scale_table[z->depth]; // non 8-bit images will be larger - } - } - break; - } - - case STBI__PNG_TYPE('I','D','A','T'): { - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (pal_img_n && !pal_len) return stbi__err("no PLTE","Corrupt PNG"); - if (scan == STBI__SCAN_header) { s->img_n = pal_img_n; return 1; } - if ((int)(ioff + c.length) < (int)ioff) return 0; - if (ioff + c.length > idata_limit) { - stbi__uint32 idata_limit_old = idata_limit; - stbi_uc *p; - if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; - while (ioff + c.length > idata_limit) - idata_limit *= 2; - STBI_NOTUSED(idata_limit_old); - p = (stbi_uc *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); if (p == NULL) return stbi__err("outofmem", "Out of memory"); - z->idata = p; - } - if (!stbi__getn(s, z->idata+ioff,c.length)) return stbi__err("outofdata","Corrupt PNG"); - ioff += c.length; - break; - } - - case STBI__PNG_TYPE('I','E','N','D'): { - stbi__uint32 raw_len, bpl; - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (scan != STBI__SCAN_load) return 1; - if (z->idata == NULL) return stbi__err("no IDAT","Corrupt PNG"); - // initial guess for decoded data size to avoid unnecessary reallocs - bpl = (s->img_x * z->depth + 7) / 8; // bytes per line, per component - raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */; - z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, !is_iphone); - if (z->expanded == NULL) return 0; // zlib should set error - STBI_FREE(z->idata); z->idata = NULL; - if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans) - s->img_out_n = s->img_n+1; - else - s->img_out_n = s->img_n; - if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) return 0; - if (has_trans) { - if (z->depth == 16) { - if (!stbi__compute_transparency16(z, tc16, s->img_out_n)) return 0; - } else { - if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0; - } - } - if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2) - stbi__de_iphone(z); - if (pal_img_n) { - // pal_img_n == 3 or 4 - s->img_n = pal_img_n; // record the actual colors we had - s->img_out_n = pal_img_n; - if (req_comp >= 3) s->img_out_n = req_comp; - if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) - return 0; - } else if (has_trans) { - // non-paletted image with tRNS -> source image has (constant) alpha - ++s->img_n; - } - STBI_FREE(z->expanded); z->expanded = NULL; - return 1; - } - - default: - // if critical, fail - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if ((c.type & (1 << 29)) == 0) { - #ifndef STBI_NO_FAILURE_STRINGS - // not threadsafe - static char invalid_chunk[] = "XXXX PNG chunk not known"; - #endif - return stbi__err(invalid_chunk, "PNG not supported: unknown PNG chunk type"); - } - stbi__skip(s, c.length); - break; - } - // end of PNG chunk, read and skip CRC - stbi__get32be(s); - } -} - -static void *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp, stbi__result_info *ri) -{ - void *result=NULL; - if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); - if (stbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { - if (p->depth < 8) - ri->bits_per_channel = 8; - else - ri->bits_per_channel = p->depth; - result = p->out; - p->out = NULL; - if (req_comp && req_comp != p->s->img_out_n) { - if (ri->bits_per_channel == 8) - result = stbi__convert_format((unsigned char *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); - else - result = stbi__convert_format16((stbi__uint16 *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); - p->s->img_out_n = req_comp; - if (result == NULL) return result; - } - *x = p->s->img_x; - *y = p->s->img_y; - if (n) *n = p->s->img_n; - } - STBI_FREE(p->out); p->out = NULL; - STBI_FREE(p->expanded); p->expanded = NULL; - STBI_FREE(p->idata); p->idata = NULL; - - return result; -} - -static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - stbi__png p; - p.s = s; - return stbi__do_png(&p, x,y,comp,req_comp, ri); -} - -static int stbi__png_test(stbi__context *s) -{ - int r; - r = stbi__check_png_header(s); - stbi__rewind(s); - return r; -} - -static int stbi__png_info_raw(stbi__png *p, int *x, int *y, int *comp) -{ - if (!stbi__parse_png_file(p, STBI__SCAN_header, 0)) { - stbi__rewind( p->s ); - return 0; - } - if (x) *x = p->s->img_x; - if (y) *y = p->s->img_y; - if (comp) *comp = p->s->img_n; - return 1; -} - -static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp) -{ - stbi__png p; - p.s = s; - return stbi__png_info_raw(&p, x, y, comp); -} -#endif - -// Microsoft/Windows BMP image - -#ifndef STBI_NO_BMP -static int stbi__bmp_test_raw(stbi__context *s) -{ - int r; - int sz; - if (stbi__get8(s) != 'B') return 0; - if (stbi__get8(s) != 'M') return 0; - stbi__get32le(s); // discard filesize - stbi__get16le(s); // discard reserved - stbi__get16le(s); // discard reserved - stbi__get32le(s); // discard data offset - sz = stbi__get32le(s); - r = (sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124); - return r; -} - -static int stbi__bmp_test(stbi__context *s) -{ - int r = stbi__bmp_test_raw(s); - stbi__rewind(s); - return r; -} - - -// returns 0..31 for the highest set bit -static int stbi__high_bit(unsigned int z) -{ - int n=0; - if (z == 0) return -1; - if (z >= 0x10000) { n += 16; z >>= 16; } - if (z >= 0x00100) { n += 8; z >>= 8; } - if (z >= 0x00010) { n += 4; z >>= 4; } - if (z >= 0x00004) { n += 2; z >>= 2; } - if (z >= 0x00002) { n += 1; z >>= 1; } - return n; -} - -static int stbi__bitcount(unsigned int a) -{ - a = (a & 0x55555555) + ((a >> 1) & 0x55555555); // max 2 - a = (a & 0x33333333) + ((a >> 2) & 0x33333333); // max 4 - a = (a + (a >> 4)) & 0x0f0f0f0f; // max 8 per 4, now 8 bits - a = (a + (a >> 8)); // max 16 per 8 bits - a = (a + (a >> 16)); // max 32 per 8 bits - return a & 0xff; -} - -static int stbi__shiftsigned(int v, int shift, int bits) -{ - int result; - int z=0; - - if (shift < 0) v <<= -shift; - else v >>= shift; - result = v; - - z = bits; - while (z < 8) { - result += v >> z; - z += bits; - } - return result; -} - -typedef struct -{ - int bpp, offset, hsz; - unsigned int mr,mg,mb,ma, all_a; -} stbi__bmp_data; - -static void *stbi__bmp_parse_header(stbi__context *s, stbi__bmp_data *info) -{ - int hsz; - if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') return stbi__errpuc("not BMP", "Corrupt BMP"); - stbi__get32le(s); // discard filesize - stbi__get16le(s); // discard reserved - stbi__get16le(s); // discard reserved - info->offset = stbi__get32le(s); - info->hsz = hsz = stbi__get32le(s); - info->mr = info->mg = info->mb = info->ma = 0; - - if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) return stbi__errpuc("unknown BMP", "BMP type not supported: unknown"); - if (hsz == 12) { - s->img_x = stbi__get16le(s); - s->img_y = stbi__get16le(s); - } else { - s->img_x = stbi__get32le(s); - s->img_y = stbi__get32le(s); - } - if (stbi__get16le(s) != 1) return stbi__errpuc("bad BMP", "bad BMP"); - info->bpp = stbi__get16le(s); - if (info->bpp == 1) return stbi__errpuc("monochrome", "BMP type not supported: 1-bit"); - if (hsz != 12) { - int compress = stbi__get32le(s); - if (compress == 1 || compress == 2) return stbi__errpuc("BMP RLE", "BMP type not supported: RLE"); - stbi__get32le(s); // discard sizeof - stbi__get32le(s); // discard hres - stbi__get32le(s); // discard vres - stbi__get32le(s); // discard colorsused - stbi__get32le(s); // discard max important - if (hsz == 40 || hsz == 56) { - if (hsz == 56) { - stbi__get32le(s); - stbi__get32le(s); - stbi__get32le(s); - stbi__get32le(s); - } - if (info->bpp == 16 || info->bpp == 32) { - if (compress == 0) { - if (info->bpp == 32) { - info->mr = 0xffu << 16; - info->mg = 0xffu << 8; - info->mb = 0xffu << 0; - info->ma = 0xffu << 24; - info->all_a = 0; // if all_a is 0 at end, then we loaded alpha channel but it was all 0 - } else { - info->mr = 31u << 10; - info->mg = 31u << 5; - info->mb = 31u << 0; - } - } else if (compress == 3) { - info->mr = stbi__get32le(s); - info->mg = stbi__get32le(s); - info->mb = stbi__get32le(s); - // not documented, but generated by photoshop and handled by mspaint - if (info->mr == info->mg && info->mg == info->mb) { - // ?!?!? - return stbi__errpuc("bad BMP", "bad BMP"); - } - } else - return stbi__errpuc("bad BMP", "bad BMP"); - } - } else { - int i; - if (hsz != 108 && hsz != 124) - return stbi__errpuc("bad BMP", "bad BMP"); - info->mr = stbi__get32le(s); - info->mg = stbi__get32le(s); - info->mb = stbi__get32le(s); - info->ma = stbi__get32le(s); - stbi__get32le(s); // discard color space - for (i=0; i < 12; ++i) - stbi__get32le(s); // discard color space parameters - if (hsz == 124) { - stbi__get32le(s); // discard rendering intent - stbi__get32le(s); // discard offset of profile data - stbi__get32le(s); // discard size of profile data - stbi__get32le(s); // discard reserved - } - } - } - return (void *) 1; -} - - -static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - stbi_uc *out; - unsigned int mr=0,mg=0,mb=0,ma=0, all_a; - stbi_uc pal[256][4]; - int psize=0,i,j,width; - int flip_vertically, pad, target; - stbi__bmp_data info; - STBI_NOTUSED(ri); - - info.all_a = 255; - if (stbi__bmp_parse_header(s, &info) == NULL) - return NULL; // error code already set - - flip_vertically = ((int) s->img_y) > 0; - s->img_y = abs((int) s->img_y); - - mr = info.mr; - mg = info.mg; - mb = info.mb; - ma = info.ma; - all_a = info.all_a; - - if (info.hsz == 12) { - if (info.bpp < 24) - psize = (info.offset - 14 - 24) / 3; - } else { - if (info.bpp < 16) - psize = (info.offset - 14 - info.hsz) >> 2; - } - - s->img_n = ma ? 4 : 3; - if (req_comp && req_comp >= 3) // we can directly decode 3 or 4 - target = req_comp; - else - target = s->img_n; // if they want monochrome, we'll post-convert - - // sanity-check size - if (!stbi__mad3sizes_valid(target, s->img_x, s->img_y, 0)) - return stbi__errpuc("too large", "Corrupt BMP"); - - out = (stbi_uc *) stbi__malloc_mad3(target, s->img_x, s->img_y, 0); - if (!out) return stbi__errpuc("outofmem", "Out of memory"); - if (info.bpp < 16) { - int z=0; - if (psize == 0 || psize > 256) { STBI_FREE(out); return stbi__errpuc("invalid", "Corrupt BMP"); } - for (i=0; i < psize; ++i) { - pal[i][2] = stbi__get8(s); - pal[i][1] = stbi__get8(s); - pal[i][0] = stbi__get8(s); - if (info.hsz != 12) stbi__get8(s); - pal[i][3] = 255; - } - stbi__skip(s, info.offset - 14 - info.hsz - psize * (info.hsz == 12 ? 3 : 4)); - if (info.bpp == 4) width = (s->img_x + 1) >> 1; - else if (info.bpp == 8) width = s->img_x; - else { STBI_FREE(out); return stbi__errpuc("bad bpp", "Corrupt BMP"); } - pad = (-width)&3; - for (j=0; j < (int) s->img_y; ++j) { - for (i=0; i < (int) s->img_x; i += 2) { - int v=stbi__get8(s),v2=0; - if (info.bpp == 4) { - v2 = v & 15; - v >>= 4; - } - out[z++] = pal[v][0]; - out[z++] = pal[v][1]; - out[z++] = pal[v][2]; - if (target == 4) out[z++] = 255; - if (i+1 == (int) s->img_x) break; - v = (info.bpp == 8) ? stbi__get8(s) : v2; - out[z++] = pal[v][0]; - out[z++] = pal[v][1]; - out[z++] = pal[v][2]; - if (target == 4) out[z++] = 255; - } - stbi__skip(s, pad); - } - } else { - int rshift=0,gshift=0,bshift=0,ashift=0,rcount=0,gcount=0,bcount=0,acount=0; - int z = 0; - int easy=0; - stbi__skip(s, info.offset - 14 - info.hsz); - if (info.bpp == 24) width = 3 * s->img_x; - else if (info.bpp == 16) width = 2*s->img_x; - else /* bpp = 32 and pad = 0 */ width=0; - pad = (-width) & 3; - if (info.bpp == 24) { - easy = 1; - } else if (info.bpp == 32) { - if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000) - easy = 2; - } - if (!easy) { - if (!mr || !mg || !mb) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } - // right shift amt to put high bit in position #7 - rshift = stbi__high_bit(mr)-7; rcount = stbi__bitcount(mr); - gshift = stbi__high_bit(mg)-7; gcount = stbi__bitcount(mg); - bshift = stbi__high_bit(mb)-7; bcount = stbi__bitcount(mb); - ashift = stbi__high_bit(ma)-7; acount = stbi__bitcount(ma); - } - for (j=0; j < (int) s->img_y; ++j) { - if (easy) { - for (i=0; i < (int) s->img_x; ++i) { - unsigned char a; - out[z+2] = stbi__get8(s); - out[z+1] = stbi__get8(s); - out[z+0] = stbi__get8(s); - z += 3; - a = (easy == 2 ? stbi__get8(s) : 255); - all_a |= a; - if (target == 4) out[z++] = a; - } - } else { - int bpp = info.bpp; - for (i=0; i < (int) s->img_x; ++i) { - stbi__uint32 v = (bpp == 16 ? (stbi__uint32) stbi__get16le(s) : stbi__get32le(s)); - int a; - out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mr, rshift, rcount)); - out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mg, gshift, gcount)); - out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mb, bshift, bcount)); - a = (ma ? stbi__shiftsigned(v & ma, ashift, acount) : 255); - all_a |= a; - if (target == 4) out[z++] = STBI__BYTECAST(a); - } - } - stbi__skip(s, pad); - } - } - - // if alpha channel is all 0s, replace with all 255s - if (target == 4 && all_a == 0) - for (i=4*s->img_x*s->img_y-1; i >= 0; i -= 4) - out[i] = 255; - - if (flip_vertically) { - stbi_uc t; - for (j=0; j < (int) s->img_y>>1; ++j) { - stbi_uc *p1 = out + j *s->img_x*target; - stbi_uc *p2 = out + (s->img_y-1-j)*s->img_x*target; - for (i=0; i < (int) s->img_x*target; ++i) { - t = p1[i]; p1[i] = p2[i]; p2[i] = t; - } - } - } - - if (req_comp && req_comp != target) { - out = stbi__convert_format(out, target, req_comp, s->img_x, s->img_y); - if (out == NULL) return out; // stbi__convert_format frees input on failure - } - - *x = s->img_x; - *y = s->img_y; - if (comp) *comp = s->img_n; - return out; -} -#endif - -// Targa Truevision - TGA -// by Jonathan Dummer -#ifndef STBI_NO_TGA -// returns STBI_rgb or whatever, 0 on error -static int stbi__tga_get_comp(int bits_per_pixel, int is_grey, int* is_rgb16) -{ - // only RGB or RGBA (incl. 16bit) or grey allowed - if(is_rgb16) *is_rgb16 = 0; - switch(bits_per_pixel) { - case 8: return STBI_grey; - case 15: - case 16: - if(bits_per_pixel == 16 && is_grey) return STBI_grey_alpha; - // else: fall-through - if(is_rgb16) *is_rgb16 = 1; - return STBI_rgb; - case 24: // fall-through - case 32: return bits_per_pixel/8; - default: return 0; - } -} - -static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp) -{ - int tga_w, tga_h, tga_comp, tga_image_type, tga_bits_per_pixel, tga_colormap_bpp; - int sz, tga_colormap_type; - stbi__get8(s); // discard Offset - tga_colormap_type = stbi__get8(s); // colormap type - if( tga_colormap_type > 1 ) { - stbi__rewind(s); - return 0; // only RGB or indexed allowed - } - tga_image_type = stbi__get8(s); // image type - if ( tga_colormap_type == 1 ) { // colormapped (paletted) image - if (tga_image_type != 1 && tga_image_type != 9) { - stbi__rewind(s); - return 0; - } - stbi__skip(s,4); // skip index of first colormap entry and number of entries - sz = stbi__get8(s); // check bits per palette color entry - if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) { - stbi__rewind(s); - return 0; - } - stbi__skip(s,4); // skip image x and y origin - tga_colormap_bpp = sz; - } else { // "normal" image w/o colormap - only RGB or grey allowed, +/- RLE - if ( (tga_image_type != 2) && (tga_image_type != 3) && (tga_image_type != 10) && (tga_image_type != 11) ) { - stbi__rewind(s); - return 0; // only RGB or grey allowed, +/- RLE - } - stbi__skip(s,9); // skip colormap specification and image x/y origin - tga_colormap_bpp = 0; - } - tga_w = stbi__get16le(s); - if( tga_w < 1 ) { - stbi__rewind(s); - return 0; // test width - } - tga_h = stbi__get16le(s); - if( tga_h < 1 ) { - stbi__rewind(s); - return 0; // test height - } - tga_bits_per_pixel = stbi__get8(s); // bits per pixel - stbi__get8(s); // ignore alpha bits - if (tga_colormap_bpp != 0) { - if((tga_bits_per_pixel != 8) && (tga_bits_per_pixel != 16)) { - // when using a colormap, tga_bits_per_pixel is the size of the indexes - // I don't think anything but 8 or 16bit indexes makes sense - stbi__rewind(s); - return 0; - } - tga_comp = stbi__tga_get_comp(tga_colormap_bpp, 0, NULL); - } else { - tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3) || (tga_image_type == 11), NULL); - } - if(!tga_comp) { - stbi__rewind(s); - return 0; - } - if (x) *x = tga_w; - if (y) *y = tga_h; - if (comp) *comp = tga_comp; - return 1; // seems to have passed everything -} - -static int stbi__tga_test(stbi__context *s) -{ - int res = 0; - int sz, tga_color_type; - stbi__get8(s); // discard Offset - tga_color_type = stbi__get8(s); // color type - if ( tga_color_type > 1 ) goto errorEnd; // only RGB or indexed allowed - sz = stbi__get8(s); // image type - if ( tga_color_type == 1 ) { // colormapped (paletted) image - if (sz != 1 && sz != 9) goto errorEnd; // colortype 1 demands image type 1 or 9 - stbi__skip(s,4); // skip index of first colormap entry and number of entries - sz = stbi__get8(s); // check bits per palette color entry - if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; - stbi__skip(s,4); // skip image x and y origin - } else { // "normal" image w/o colormap - if ( (sz != 2) && (sz != 3) && (sz != 10) && (sz != 11) ) goto errorEnd; // only RGB or grey allowed, +/- RLE - stbi__skip(s,9); // skip colormap specification and image x/y origin - } - if ( stbi__get16le(s) < 1 ) goto errorEnd; // test width - if ( stbi__get16le(s) < 1 ) goto errorEnd; // test height - sz = stbi__get8(s); // bits per pixel - if ( (tga_color_type == 1) && (sz != 8) && (sz != 16) ) goto errorEnd; // for colormapped images, bpp is size of an index - if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; - - res = 1; // if we got this far, everything's good and we can return 1 instead of 0 - -errorEnd: - stbi__rewind(s); - return res; -} - -// read 16bit value and convert to 24bit RGB -static void stbi__tga_read_rgb16(stbi__context *s, stbi_uc* out) -{ - stbi__uint16 px = (stbi__uint16)stbi__get16le(s); - stbi__uint16 fiveBitMask = 31; - // we have 3 channels with 5bits each - int r = (px >> 10) & fiveBitMask; - int g = (px >> 5) & fiveBitMask; - int b = px & fiveBitMask; - // Note that this saves the data in RGB(A) order, so it doesn't need to be swapped later - out[0] = (stbi_uc)((r * 255)/31); - out[1] = (stbi_uc)((g * 255)/31); - out[2] = (stbi_uc)((b * 255)/31); - - // some people claim that the most significant bit might be used for alpha - // (possibly if an alpha-bit is set in the "image descriptor byte") - // but that only made 16bit test images completely translucent.. - // so let's treat all 15 and 16bit TGAs as RGB with no alpha. -} - -static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - // read in the TGA header stuff - int tga_offset = stbi__get8(s); - int tga_indexed = stbi__get8(s); - int tga_image_type = stbi__get8(s); - int tga_is_RLE = 0; - int tga_palette_start = stbi__get16le(s); - int tga_palette_len = stbi__get16le(s); - int tga_palette_bits = stbi__get8(s); - int tga_x_origin = stbi__get16le(s); - int tga_y_origin = stbi__get16le(s); - int tga_width = stbi__get16le(s); - int tga_height = stbi__get16le(s); - int tga_bits_per_pixel = stbi__get8(s); - int tga_comp, tga_rgb16=0; - int tga_inverted = stbi__get8(s); - // int tga_alpha_bits = tga_inverted & 15; // the 4 lowest bits - unused (useless?) - // image data - unsigned char *tga_data; - unsigned char *tga_palette = NULL; - int i, j; - unsigned char raw_data[4] = {0}; - int RLE_count = 0; - int RLE_repeating = 0; - int read_next_pixel = 1; - STBI_NOTUSED(ri); - - // do a tiny bit of precessing - if ( tga_image_type >= 8 ) - { - tga_image_type -= 8; - tga_is_RLE = 1; - } - tga_inverted = 1 - ((tga_inverted >> 5) & 1); - - // If I'm paletted, then I'll use the number of bits from the palette - if ( tga_indexed ) tga_comp = stbi__tga_get_comp(tga_palette_bits, 0, &tga_rgb16); - else tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3), &tga_rgb16); - - if(!tga_comp) // shouldn't really happen, stbi__tga_test() should have ensured basic consistency - return stbi__errpuc("bad format", "Can't find out TGA pixelformat"); - - // tga info - *x = tga_width; - *y = tga_height; - if (comp) *comp = tga_comp; - - if (!stbi__mad3sizes_valid(tga_width, tga_height, tga_comp, 0)) - return stbi__errpuc("too large", "Corrupt TGA"); - - tga_data = (unsigned char*)stbi__malloc_mad3(tga_width, tga_height, tga_comp, 0); - if (!tga_data) return stbi__errpuc("outofmem", "Out of memory"); - - // skip to the data's starting position (offset usually = 0) - stbi__skip(s, tga_offset ); - - if ( !tga_indexed && !tga_is_RLE && !tga_rgb16 ) { - for (i=0; i < tga_height; ++i) { - int row = tga_inverted ? tga_height -i - 1 : i; - stbi_uc *tga_row = tga_data + row*tga_width*tga_comp; - stbi__getn(s, tga_row, tga_width * tga_comp); - } - } else { - // do I need to load a palette? - if ( tga_indexed) - { - // any data to skip? (offset usually = 0) - stbi__skip(s, tga_palette_start ); - // load the palette - tga_palette = (unsigned char*)stbi__malloc_mad2(tga_palette_len, tga_comp, 0); - if (!tga_palette) { - STBI_FREE(tga_data); - return stbi__errpuc("outofmem", "Out of memory"); - } - if (tga_rgb16) { - stbi_uc *pal_entry = tga_palette; - STBI_ASSERT(tga_comp == STBI_rgb); - for (i=0; i < tga_palette_len; ++i) { - stbi__tga_read_rgb16(s, pal_entry); - pal_entry += tga_comp; - } - } else if (!stbi__getn(s, tga_palette, tga_palette_len * tga_comp)) { - STBI_FREE(tga_data); - STBI_FREE(tga_palette); - return stbi__errpuc("bad palette", "Corrupt TGA"); - } - } - // load the data - for (i=0; i < tga_width * tga_height; ++i) - { - // if I'm in RLE mode, do I need to get a RLE stbi__pngchunk? - if ( tga_is_RLE ) - { - if ( RLE_count == 0 ) - { - // yep, get the next byte as a RLE command - int RLE_cmd = stbi__get8(s); - RLE_count = 1 + (RLE_cmd & 127); - RLE_repeating = RLE_cmd >> 7; - read_next_pixel = 1; - } else if ( !RLE_repeating ) - { - read_next_pixel = 1; - } - } else - { - read_next_pixel = 1; - } - // OK, if I need to read a pixel, do it now - if ( read_next_pixel ) - { - // load however much data we did have - if ( tga_indexed ) - { - // read in index, then perform the lookup - int pal_idx = (tga_bits_per_pixel == 8) ? stbi__get8(s) : stbi__get16le(s); - if ( pal_idx >= tga_palette_len ) { - // invalid index - pal_idx = 0; - } - pal_idx *= tga_comp; - for (j = 0; j < tga_comp; ++j) { - raw_data[j] = tga_palette[pal_idx+j]; - } - } else if(tga_rgb16) { - STBI_ASSERT(tga_comp == STBI_rgb); - stbi__tga_read_rgb16(s, raw_data); - } else { - // read in the data raw - for (j = 0; j < tga_comp; ++j) { - raw_data[j] = stbi__get8(s); - } - } - // clear the reading flag for the next pixel - read_next_pixel = 0; - } // end of reading a pixel - - // copy data - for (j = 0; j < tga_comp; ++j) - tga_data[i*tga_comp+j] = raw_data[j]; - - // in case we're in RLE mode, keep counting down - --RLE_count; - } - // do I need to invert the image? - if ( tga_inverted ) - { - for (j = 0; j*2 < tga_height; ++j) - { - int index1 = j * tga_width * tga_comp; - int index2 = (tga_height - 1 - j) * tga_width * tga_comp; - for (i = tga_width * tga_comp; i > 0; --i) - { - unsigned char temp = tga_data[index1]; - tga_data[index1] = tga_data[index2]; - tga_data[index2] = temp; - ++index1; - ++index2; - } - } - } - // clear my palette, if I had one - if ( tga_palette != NULL ) - { - STBI_FREE( tga_palette ); - } - } - - // swap RGB - if the source data was RGB16, it already is in the right order - if (tga_comp >= 3 && !tga_rgb16) - { - unsigned char* tga_pixel = tga_data; - for (i=0; i < tga_width * tga_height; ++i) - { - unsigned char temp = tga_pixel[0]; - tga_pixel[0] = tga_pixel[2]; - tga_pixel[2] = temp; - tga_pixel += tga_comp; - } - } - - // convert to target component count - if (req_comp && req_comp != tga_comp) - tga_data = stbi__convert_format(tga_data, tga_comp, req_comp, tga_width, tga_height); - - // the things I do to get rid of an error message, and yet keep - // Microsoft's C compilers happy... [8^( - tga_palette_start = tga_palette_len = tga_palette_bits = - tga_x_origin = tga_y_origin = 0; - // OK, done - return tga_data; -} -#endif - -// ************************************************************************************************* -// Photoshop PSD loader -- PD by Thatcher Ulrich, integration by Nicolas Schulz, tweaked by STB - -#ifndef STBI_NO_PSD -static int stbi__psd_test(stbi__context *s) -{ - int r = (stbi__get32be(s) == 0x38425053); - stbi__rewind(s); - return r; -} - -static int stbi__psd_decode_rle(stbi__context *s, stbi_uc *p, int pixelCount) -{ - int count, nleft, len; - - count = 0; - while ((nleft = pixelCount - count) > 0) { - len = stbi__get8(s); - if (len == 128) { - // No-op. - } else if (len < 128) { - // Copy next len+1 bytes literally. - len++; - if (len > nleft) return 0; // corrupt data - count += len; - while (len) { - *p = stbi__get8(s); - p += 4; - len--; - } - } else if (len > 128) { - stbi_uc val; - // Next -len+1 bytes in the dest are replicated from next source byte. - // (Interpret len as a negative 8-bit int.) - len = 257 - len; - if (len > nleft) return 0; // corrupt data - val = stbi__get8(s); - count += len; - while (len) { - *p = val; - p += 4; - len--; - } - } - } - - return 1; -} - -static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) -{ - int pixelCount; - int channelCount, compression; - int channel, i; - int bitdepth; - int w,h; - stbi_uc *out; - STBI_NOTUSED(ri); - - // Check identifier - if (stbi__get32be(s) != 0x38425053) // "8BPS" - return stbi__errpuc("not PSD", "Corrupt PSD image"); - - // Check file type version. - if (stbi__get16be(s) != 1) - return stbi__errpuc("wrong version", "Unsupported version of PSD image"); - - // Skip 6 reserved bytes. - stbi__skip(s, 6 ); - - // Read the number of channels (R, G, B, A, etc). - channelCount = stbi__get16be(s); - if (channelCount < 0 || channelCount > 16) - return stbi__errpuc("wrong channel count", "Unsupported number of channels in PSD image"); - - // Read the rows and columns of the image. - h = stbi__get32be(s); - w = stbi__get32be(s); - - // Make sure the depth is 8 bits. - bitdepth = stbi__get16be(s); - if (bitdepth != 8 && bitdepth != 16) - return stbi__errpuc("unsupported bit depth", "PSD bit depth is not 8 or 16 bit"); - - // Make sure the color mode is RGB. - // Valid options are: - // 0: Bitmap - // 1: Grayscale - // 2: Indexed color - // 3: RGB color - // 4: CMYK color - // 7: Multichannel - // 8: Duotone - // 9: Lab color - if (stbi__get16be(s) != 3) - return stbi__errpuc("wrong color format", "PSD is not in RGB color format"); - - // Skip the Mode Data. (It's the palette for indexed color; other info for other modes.) - stbi__skip(s,stbi__get32be(s) ); - - // Skip the image resources. (resolution, pen tool paths, etc) - stbi__skip(s, stbi__get32be(s) ); - - // Skip the reserved data. - stbi__skip(s, stbi__get32be(s) ); - - // Find out if the data is compressed. - // Known values: - // 0: no compression - // 1: RLE compressed - compression = stbi__get16be(s); - if (compression > 1) - return stbi__errpuc("bad compression", "PSD has an unknown compression format"); - - // Check size - if (!stbi__mad3sizes_valid(4, w, h, 0)) - return stbi__errpuc("too large", "Corrupt PSD"); - - // Create the destination image. - - if (!compression && bitdepth == 16 && bpc == 16) { - out = (stbi_uc *) stbi__malloc_mad3(8, w, h, 0); - ri->bits_per_channel = 16; - } else - out = (stbi_uc *) stbi__malloc(4 * w*h); - - if (!out) return stbi__errpuc("outofmem", "Out of memory"); - pixelCount = w*h; - - // Initialize the data to zero. - //memset( out, 0, pixelCount * 4 ); - - // Finally, the image data. - if (compression) { - // RLE as used by .PSD and .TIFF - // Loop until you get the number of unpacked bytes you are expecting: - // Read the next source byte into n. - // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally. - // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times. - // Else if n is 128, noop. - // Endloop - - // The RLE-compressed data is preceeded by a 2-byte data count for each row in the data, - // which we're going to just skip. - stbi__skip(s, h * channelCount * 2 ); - - // Read the RLE data by channel. - for (channel = 0; channel < 4; channel++) { - stbi_uc *p; - - p = out+channel; - if (channel >= channelCount) { - // Fill this channel with default data. - for (i = 0; i < pixelCount; i++, p += 4) - *p = (channel == 3 ? 255 : 0); - } else { - // Read the RLE data. - if (!stbi__psd_decode_rle(s, p, pixelCount)) { - STBI_FREE(out); - return stbi__errpuc("corrupt", "bad RLE data"); - } - } - } - - } else { - // We're at the raw image data. It's each channel in order (Red, Green, Blue, Alpha, ...) - // where each channel consists of an 8-bit (or 16-bit) value for each pixel in the image. - - // Read the data by channel. - for (channel = 0; channel < 4; channel++) { - if (channel >= channelCount) { - // Fill this channel with default data. - if (bitdepth == 16 && bpc == 16) { - stbi__uint16 *q = ((stbi__uint16 *) out) + channel; - stbi__uint16 val = channel == 3 ? 65535 : 0; - for (i = 0; i < pixelCount; i++, q += 4) - *q = val; - } else { - stbi_uc *p = out+channel; - stbi_uc val = channel == 3 ? 255 : 0; - for (i = 0; i < pixelCount; i++, p += 4) - *p = val; - } - } else { - if (ri->bits_per_channel == 16) { // output bpc - stbi__uint16 *q = ((stbi__uint16 *) out) + channel; - for (i = 0; i < pixelCount; i++, q += 4) - *q = (stbi__uint16) stbi__get16be(s); - } else { - stbi_uc *p = out+channel; - if (bitdepth == 16) { // input bpc - for (i = 0; i < pixelCount; i++, p += 4) - *p = (stbi_uc) (stbi__get16be(s) >> 8); - } else { - for (i = 0; i < pixelCount; i++, p += 4) - *p = stbi__get8(s); - } - } - } - } - } - - // remove weird white matte from PSD - if (channelCount >= 4) { - if (ri->bits_per_channel == 16) { - for (i=0; i < w*h; ++i) { - stbi__uint16 *pixel = (stbi__uint16 *) out + 4*i; - if (pixel[3] != 0 && pixel[3] != 65535) { - float a = pixel[3] / 65535.0f; - float ra = 1.0f / a; - float inv_a = 65535.0f * (1 - ra); - pixel[0] = (stbi__uint16) (pixel[0]*ra + inv_a); - pixel[1] = (stbi__uint16) (pixel[1]*ra + inv_a); - pixel[2] = (stbi__uint16) (pixel[2]*ra + inv_a); - } - } - } else { - for (i=0; i < w*h; ++i) { - unsigned char *pixel = out + 4*i; - if (pixel[3] != 0 && pixel[3] != 255) { - float a = pixel[3] / 255.0f; - float ra = 1.0f / a; - float inv_a = 255.0f * (1 - ra); - pixel[0] = (unsigned char) (pixel[0]*ra + inv_a); - pixel[1] = (unsigned char) (pixel[1]*ra + inv_a); - pixel[2] = (unsigned char) (pixel[2]*ra + inv_a); - } - } - } - } - - // convert to desired output format - if (req_comp && req_comp != 4) { - if (ri->bits_per_channel == 16) - out = (stbi_uc *) stbi__convert_format16((stbi__uint16 *) out, 4, req_comp, w, h); - else - out = stbi__convert_format(out, 4, req_comp, w, h); - if (out == NULL) return out; // stbi__convert_format frees input on failure - } - - if (comp) *comp = 4; - *y = h; - *x = w; - - return out; -} -#endif - -// ************************************************************************************************* -// Softimage PIC loader -// by Tom Seddon -// -// See http://softimage.wiki.softimage.com/index.php/INFO:_PIC_file_format -// See http://ozviz.wasp.uwa.edu.au/~pbourke/dataformats/softimagepic/ - -#ifndef STBI_NO_PIC -static int stbi__pic_is4(stbi__context *s,const char *str) -{ - int i; - for (i=0; i<4; ++i) - if (stbi__get8(s) != (stbi_uc)str[i]) - return 0; - - return 1; -} - -static int stbi__pic_test_core(stbi__context *s) -{ - int i; - - if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) - return 0; - - for(i=0;i<84;++i) - stbi__get8(s); - - if (!stbi__pic_is4(s,"PICT")) - return 0; - - return 1; -} - -typedef struct -{ - stbi_uc size,type,channel; -} stbi__pic_packet; - -static stbi_uc *stbi__readval(stbi__context *s, int channel, stbi_uc *dest) -{ - int mask=0x80, i; - - for (i=0; i<4; ++i, mask>>=1) { - if (channel & mask) { - if (stbi__at_eof(s)) return stbi__errpuc("bad file","PIC file too short"); - dest[i]=stbi__get8(s); - } - } - - return dest; -} - -static void stbi__copyval(int channel,stbi_uc *dest,const stbi_uc *src) -{ - int mask=0x80,i; - - for (i=0;i<4; ++i, mask>>=1) - if (channel&mask) - dest[i]=src[i]; -} - -static stbi_uc *stbi__pic_load_core(stbi__context *s,int width,int height,int *comp, stbi_uc *result) -{ - int act_comp=0,num_packets=0,y,chained; - stbi__pic_packet packets[10]; - - // this will (should...) cater for even some bizarre stuff like having data - // for the same channel in multiple packets. - do { - stbi__pic_packet *packet; - - if (num_packets==sizeof(packets)/sizeof(packets[0])) - return stbi__errpuc("bad format","too many packets"); - - packet = &packets[num_packets++]; - - chained = stbi__get8(s); - packet->size = stbi__get8(s); - packet->type = stbi__get8(s); - packet->channel = stbi__get8(s); - - act_comp |= packet->channel; - - if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (reading packets)"); - if (packet->size != 8) return stbi__errpuc("bad format","packet isn't 8bpp"); - } while (chained); - - *comp = (act_comp & 0x10 ? 4 : 3); // has alpha channel? - - for(y=0; ytype) { - default: - return stbi__errpuc("bad format","packet has bad compression type"); - - case 0: {//uncompressed - int x; - - for(x=0;xchannel,dest)) - return 0; - break; - } - - case 1://Pure RLE - { - int left=width, i; - - while (left>0) { - stbi_uc count,value[4]; - - count=stbi__get8(s); - if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pure read count)"); - - if (count > left) - count = (stbi_uc) left; - - if (!stbi__readval(s,packet->channel,value)) return 0; - - for(i=0; ichannel,dest,value); - left -= count; - } - } - break; - - case 2: {//Mixed RLE - int left=width; - while (left>0) { - int count = stbi__get8(s), i; - if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (mixed read count)"); - - if (count >= 128) { // Repeated - stbi_uc value[4]; - - if (count==128) - count = stbi__get16be(s); - else - count -= 127; - if (count > left) - return stbi__errpuc("bad file","scanline overrun"); - - if (!stbi__readval(s,packet->channel,value)) - return 0; - - for(i=0;ichannel,dest,value); - } else { // Raw - ++count; - if (count>left) return stbi__errpuc("bad file","scanline overrun"); - - for(i=0;ichannel,dest)) - return 0; - } - left-=count; - } - break; - } - } - } - } - - return result; -} - -static void *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int req_comp, stbi__result_info *ri) -{ - stbi_uc *result; - int i, x,y, internal_comp; - STBI_NOTUSED(ri); - - if (!comp) comp = &internal_comp; - - for (i=0; i<92; ++i) - stbi__get8(s); - - x = stbi__get16be(s); - y = stbi__get16be(s); - if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)"); - if (!stbi__mad3sizes_valid(x, y, 4, 0)) return stbi__errpuc("too large", "PIC image too large to decode"); - - stbi__get32be(s); //skip `ratio' - stbi__get16be(s); //skip `fields' - stbi__get16be(s); //skip `pad' - - // intermediate buffer is RGBA - result = (stbi_uc *) stbi__malloc_mad3(x, y, 4, 0); - memset(result, 0xff, x*y*4); - - if (!stbi__pic_load_core(s,x,y,comp, result)) { - STBI_FREE(result); - result=0; - } - *px = x; - *py = y; - if (req_comp == 0) req_comp = *comp; - result=stbi__convert_format(result,4,req_comp,x,y); - - return result; -} - -static int stbi__pic_test(stbi__context *s) -{ - int r = stbi__pic_test_core(s); - stbi__rewind(s); - return r; -} -#endif - -// ************************************************************************************************* -// GIF loader -- public domain by Jean-Marc Lienher -- simplified/shrunk by stb - -#ifndef STBI_NO_GIF -typedef struct -{ - stbi__int16 prefix; - stbi_uc first; - stbi_uc suffix; -} stbi__gif_lzw; - -typedef struct -{ - int w,h; - stbi_uc *out, *old_out; // output buffer (always 4 components) - int flags, bgindex, ratio, transparent, eflags, delay; - stbi_uc pal[256][4]; - stbi_uc lpal[256][4]; - stbi__gif_lzw codes[4096]; - stbi_uc *color_table; - int parse, step; - int lflags; - int start_x, start_y; - int max_x, max_y; - int cur_x, cur_y; - int line_size; -} stbi__gif; - -static int stbi__gif_test_raw(stbi__context *s) -{ - int sz; - if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return 0; - sz = stbi__get8(s); - if (sz != '9' && sz != '7') return 0; - if (stbi__get8(s) != 'a') return 0; - return 1; -} - -static int stbi__gif_test(stbi__context *s) -{ - int r = stbi__gif_test_raw(s); - stbi__rewind(s); - return r; -} - -static void stbi__gif_parse_colortable(stbi__context *s, stbi_uc pal[256][4], int num_entries, int transp) -{ - int i; - for (i=0; i < num_entries; ++i) { - pal[i][2] = stbi__get8(s); - pal[i][1] = stbi__get8(s); - pal[i][0] = stbi__get8(s); - pal[i][3] = transp == i ? 0 : 255; - } -} - -static int stbi__gif_header(stbi__context *s, stbi__gif *g, int *comp, int is_info) -{ - stbi_uc version; - if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') - return stbi__err("not GIF", "Corrupt GIF"); - - version = stbi__get8(s); - if (version != '7' && version != '9') return stbi__err("not GIF", "Corrupt GIF"); - if (stbi__get8(s) != 'a') return stbi__err("not GIF", "Corrupt GIF"); - - stbi__g_failure_reason = ""; - g->w = stbi__get16le(s); - g->h = stbi__get16le(s); - g->flags = stbi__get8(s); - g->bgindex = stbi__get8(s); - g->ratio = stbi__get8(s); - g->transparent = -1; - - if (comp != 0) *comp = 4; // can't actually tell whether it's 3 or 4 until we parse the comments - - if (is_info) return 1; - - if (g->flags & 0x80) - stbi__gif_parse_colortable(s,g->pal, 2 << (g->flags & 7), -1); - - return 1; -} - -static int stbi__gif_info_raw(stbi__context *s, int *x, int *y, int *comp) -{ - stbi__gif* g = (stbi__gif*) stbi__malloc(sizeof(stbi__gif)); - if (!stbi__gif_header(s, g, comp, 1)) { - STBI_FREE(g); - stbi__rewind( s ); - return 0; - } - if (x) *x = g->w; - if (y) *y = g->h; - STBI_FREE(g); - return 1; -} - -static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code) -{ - stbi_uc *p, *c; - - // recurse to decode the prefixes, since the linked-list is backwards, - // and working backwards through an interleaved image would be nasty - if (g->codes[code].prefix >= 0) - stbi__out_gif_code(g, g->codes[code].prefix); - - if (g->cur_y >= g->max_y) return; - - p = &g->out[g->cur_x + g->cur_y]; - c = &g->color_table[g->codes[code].suffix * 4]; - - if (c[3] >= 128) { - p[0] = c[2]; - p[1] = c[1]; - p[2] = c[0]; - p[3] = c[3]; - } - g->cur_x += 4; - - if (g->cur_x >= g->max_x) { - g->cur_x = g->start_x; - g->cur_y += g->step; - - while (g->cur_y >= g->max_y && g->parse > 0) { - g->step = (1 << g->parse) * g->line_size; - g->cur_y = g->start_y + (g->step >> 1); - --g->parse; - } - } -} - -static stbi_uc *stbi__process_gif_raster(stbi__context *s, stbi__gif *g) -{ - stbi_uc lzw_cs; - stbi__int32 len, init_code; - stbi__uint32 first; - stbi__int32 codesize, codemask, avail, oldcode, bits, valid_bits, clear; - stbi__gif_lzw *p; - - lzw_cs = stbi__get8(s); - if (lzw_cs > 12) return NULL; - clear = 1 << lzw_cs; - first = 1; - codesize = lzw_cs + 1; - codemask = (1 << codesize) - 1; - bits = 0; - valid_bits = 0; - for (init_code = 0; init_code < clear; init_code++) { - g->codes[init_code].prefix = -1; - g->codes[init_code].first = (stbi_uc) init_code; - g->codes[init_code].suffix = (stbi_uc) init_code; - } - - // support no starting clear code - avail = clear+2; - oldcode = -1; - - len = 0; - for(;;) { - if (valid_bits < codesize) { - if (len == 0) { - len = stbi__get8(s); // start new block - if (len == 0) - return g->out; - } - --len; - bits |= (stbi__int32) stbi__get8(s) << valid_bits; - valid_bits += 8; - } else { - stbi__int32 code = bits & codemask; - bits >>= codesize; - valid_bits -= codesize; - // @OPTIMIZE: is there some way we can accelerate the non-clear path? - if (code == clear) { // clear code - codesize = lzw_cs + 1; - codemask = (1 << codesize) - 1; - avail = clear + 2; - oldcode = -1; - first = 0; - } else if (code == clear + 1) { // end of stream code - stbi__skip(s, len); - while ((len = stbi__get8(s)) > 0) - stbi__skip(s,len); - return g->out; - } else if (code <= avail) { - if (first) return stbi__errpuc("no clear code", "Corrupt GIF"); - - if (oldcode >= 0) { - p = &g->codes[avail++]; - if (avail > 4096) return stbi__errpuc("too many codes", "Corrupt GIF"); - p->prefix = (stbi__int16) oldcode; - p->first = g->codes[oldcode].first; - p->suffix = (code == avail) ? p->first : g->codes[code].first; - } else if (code == avail) - return stbi__errpuc("illegal code in raster", "Corrupt GIF"); - - stbi__out_gif_code(g, (stbi__uint16) code); - - if ((avail & codemask) == 0 && avail <= 0x0FFF) { - codesize++; - codemask = (1 << codesize) - 1; - } - - oldcode = code; - } else { - return stbi__errpuc("illegal code in raster", "Corrupt GIF"); - } - } - } -} - -static void stbi__fill_gif_background(stbi__gif *g, int x0, int y0, int x1, int y1) -{ - int x, y; - stbi_uc *c = g->pal[g->bgindex]; - for (y = y0; y < y1; y += 4 * g->w) { - for (x = x0; x < x1; x += 4) { - stbi_uc *p = &g->out[y + x]; - p[0] = c[2]; - p[1] = c[1]; - p[2] = c[0]; - p[3] = 0; - } - } -} - -// this function is designed to support animated gifs, although stb_image doesn't support it -static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, int req_comp) -{ - int i; - stbi_uc *prev_out = NULL; - - if (g->out == 0 && !stbi__gif_header(s, g, comp,0)) - return NULL; // stbi__g_failure_reason set by stbi__gif_header - - if (!stbi__mad3sizes_valid(g->w, g->h, 4, 0)) - return stbi__errpuc("too large", "GIF too large"); - - prev_out = g->out; - g->out = (stbi_uc *) stbi__malloc_mad3(4, g->w, g->h, 0); - if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory"); - - switch ((g->eflags & 0x1C) >> 2) { - case 0: // unspecified (also always used on 1st frame) - stbi__fill_gif_background(g, 0, 0, 4 * g->w, 4 * g->w * g->h); - break; - case 1: // do not dispose - if (prev_out) memcpy(g->out, prev_out, 4 * g->w * g->h); - g->old_out = prev_out; - break; - case 2: // dispose to background - if (prev_out) memcpy(g->out, prev_out, 4 * g->w * g->h); - stbi__fill_gif_background(g, g->start_x, g->start_y, g->max_x, g->max_y); - break; - case 3: // dispose to previous - if (g->old_out) { - for (i = g->start_y; i < g->max_y; i += 4 * g->w) - memcpy(&g->out[i + g->start_x], &g->old_out[i + g->start_x], g->max_x - g->start_x); - } - break; - } - - for (;;) { - switch (stbi__get8(s)) { - case 0x2C: /* Image Descriptor */ - { - int prev_trans = -1; - stbi__int32 x, y, w, h; - stbi_uc *o; - - x = stbi__get16le(s); - y = stbi__get16le(s); - w = stbi__get16le(s); - h = stbi__get16le(s); - if (((x + w) > (g->w)) || ((y + h) > (g->h))) - return stbi__errpuc("bad Image Descriptor", "Corrupt GIF"); - - g->line_size = g->w * 4; - g->start_x = x * 4; - g->start_y = y * g->line_size; - g->max_x = g->start_x + w * 4; - g->max_y = g->start_y + h * g->line_size; - g->cur_x = g->start_x; - g->cur_y = g->start_y; - - g->lflags = stbi__get8(s); - - if (g->lflags & 0x40) { - g->step = 8 * g->line_size; // first interlaced spacing - g->parse = 3; - } else { - g->step = g->line_size; - g->parse = 0; - } - - if (g->lflags & 0x80) { - stbi__gif_parse_colortable(s,g->lpal, 2 << (g->lflags & 7), g->eflags & 0x01 ? g->transparent : -1); - g->color_table = (stbi_uc *) g->lpal; - } else if (g->flags & 0x80) { - if (g->transparent >= 0 && (g->eflags & 0x01)) { - prev_trans = g->pal[g->transparent][3]; - g->pal[g->transparent][3] = 0; - } - g->color_table = (stbi_uc *) g->pal; - } else - return stbi__errpuc("missing color table", "Corrupt GIF"); - - o = stbi__process_gif_raster(s, g); - if (o == NULL) return NULL; - - if (prev_trans != -1) - g->pal[g->transparent][3] = (stbi_uc) prev_trans; - - return o; - } - - case 0x21: // Comment Extension. - { - int len; - if (stbi__get8(s) == 0xF9) { // Graphic Control Extension. - len = stbi__get8(s); - if (len == 4) { - g->eflags = stbi__get8(s); - g->delay = stbi__get16le(s); - g->transparent = stbi__get8(s); - } else { - stbi__skip(s, len); - break; - } - } - while ((len = stbi__get8(s)) != 0) - stbi__skip(s, len); - break; - } - - case 0x3B: // gif stream termination code - return (stbi_uc *) s; // using '1' causes warning on some compilers - - default: - return stbi__errpuc("unknown code", "Corrupt GIF"); - } - } - - STBI_NOTUSED(req_comp); -} - -static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - stbi_uc *u = NULL; - stbi__gif* g = (stbi__gif*) stbi__malloc(sizeof(stbi__gif)); - memset(g, 0, sizeof(*g)); - STBI_NOTUSED(ri); - - u = stbi__gif_load_next(s, g, comp, req_comp); - if (u == (stbi_uc *) s) u = 0; // end of animated gif marker - if (u) { - *x = g->w; - *y = g->h; - if (req_comp && req_comp != 4) - u = stbi__convert_format(u, 4, req_comp, g->w, g->h); - } - else if (g->out) - STBI_FREE(g->out); - STBI_FREE(g); - return u; -} - -static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp) -{ - return stbi__gif_info_raw(s,x,y,comp); -} -#endif - -// ************************************************************************************************* -// Radiance RGBE HDR loader -// originally by Nicolas Schulz -#ifndef STBI_NO_HDR -static int stbi__hdr_test_core(stbi__context *s, const char *signature) -{ - int i; - for (i=0; signature[i]; ++i) - if (stbi__get8(s) != signature[i]) - return 0; - stbi__rewind(s); - return 1; -} - -static int stbi__hdr_test(stbi__context* s) -{ - int r = stbi__hdr_test_core(s, "#?RADIANCE\n"); - stbi__rewind(s); - if(!r) { - r = stbi__hdr_test_core(s, "#?RGBE\n"); - stbi__rewind(s); - } - return r; -} - -#define STBI__HDR_BUFLEN 1024 -static char *stbi__hdr_gettoken(stbi__context *z, char *buffer) -{ - int len=0; - char c = '\0'; - - c = (char) stbi__get8(z); - - while (!stbi__at_eof(z) && c != '\n') { - buffer[len++] = c; - if (len == STBI__HDR_BUFLEN-1) { - // flush to end of line - while (!stbi__at_eof(z) && stbi__get8(z) != '\n') - ; - break; - } - c = (char) stbi__get8(z); - } - - buffer[len] = 0; - return buffer; -} - -static void stbi__hdr_convert(float *output, stbi_uc *input, int req_comp) -{ - if ( input[3] != 0 ) { - float f1; - // Exponent - f1 = (float) ldexp(1.0f, input[3] - (int)(128 + 8)); - if (req_comp <= 2) - output[0] = (input[0] + input[1] + input[2]) * f1 / 3; - else { - output[0] = input[0] * f1; - output[1] = input[1] * f1; - output[2] = input[2] * f1; - } - if (req_comp == 2) output[1] = 1; - if (req_comp == 4) output[3] = 1; - } else { - switch (req_comp) { - case 4: output[3] = 1; /* fallthrough */ - case 3: output[0] = output[1] = output[2] = 0; - break; - case 2: output[1] = 1; /* fallthrough */ - case 1: output[0] = 0; - break; - } - } -} - -static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - char buffer[STBI__HDR_BUFLEN]; - char *token; - int valid = 0; - int width, height; - stbi_uc *scanline; - float *hdr_data; - int len; - unsigned char count, value; - int i, j, k, c1,c2, z; - const char *headerToken; - STBI_NOTUSED(ri); - - // Check identifier - headerToken = stbi__hdr_gettoken(s,buffer); - if (strcmp(headerToken, "#?RADIANCE") != 0 && strcmp(headerToken, "#?RGBE") != 0) - return stbi__errpf("not HDR", "Corrupt HDR image"); - - // Parse header - for(;;) { - token = stbi__hdr_gettoken(s,buffer); - if (token[0] == 0) break; - if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; - } - - if (!valid) return stbi__errpf("unsupported format", "Unsupported HDR format"); - - // Parse width and height - // can't use sscanf() if we're not using stdio! - token = stbi__hdr_gettoken(s,buffer); - if (strncmp(token, "-Y ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); - token += 3; - height = (int) strtol(token, &token, 10); - while (*token == ' ') ++token; - if (strncmp(token, "+X ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); - token += 3; - width = (int) strtol(token, NULL, 10); - - *x = width; - *y = height; - - if (comp) *comp = 3; - if (req_comp == 0) req_comp = 3; - - if (!stbi__mad4sizes_valid(width, height, req_comp, sizeof(float), 0)) - return stbi__errpf("too large", "HDR image is too large"); - - // Read data - hdr_data = (float *) stbi__malloc_mad4(width, height, req_comp, sizeof(float), 0); - if (!hdr_data) - return stbi__errpf("outofmem", "Out of memory"); - - // Load image data - // image data is stored as some number of sca - if ( width < 8 || width >= 32768) { - // Read flat data - for (j=0; j < height; ++j) { - for (i=0; i < width; ++i) { - stbi_uc rgbe[4]; - main_decode_loop: - stbi__getn(s, rgbe, 4); - stbi__hdr_convert(hdr_data + j * width * req_comp + i * req_comp, rgbe, req_comp); - } - } - } else { - // Read RLE-encoded data - scanline = NULL; - - for (j = 0; j < height; ++j) { - c1 = stbi__get8(s); - c2 = stbi__get8(s); - len = stbi__get8(s); - if (c1 != 2 || c2 != 2 || (len & 0x80)) { - // not run-length encoded, so we have to actually use THIS data as a decoded - // pixel (note this can't be a valid pixel--one of RGB must be >= 128) - stbi_uc rgbe[4]; - rgbe[0] = (stbi_uc) c1; - rgbe[1] = (stbi_uc) c2; - rgbe[2] = (stbi_uc) len; - rgbe[3] = (stbi_uc) stbi__get8(s); - stbi__hdr_convert(hdr_data, rgbe, req_comp); - i = 1; - j = 0; - STBI_FREE(scanline); - goto main_decode_loop; // yes, this makes no sense - } - len <<= 8; - len |= stbi__get8(s); - if (len != width) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); } - if (scanline == NULL) { - scanline = (stbi_uc *) stbi__malloc_mad2(width, 4, 0); - if (!scanline) { - STBI_FREE(hdr_data); - return stbi__errpf("outofmem", "Out of memory"); - } - } - - for (k = 0; k < 4; ++k) { - int nleft; - i = 0; - while ((nleft = width - i) > 0) { - count = stbi__get8(s); - if (count > 128) { - // Run - value = stbi__get8(s); - count -= 128; - if (count > nleft) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } - for (z = 0; z < count; ++z) - scanline[i++ * 4 + k] = value; - } else { - // Dump - if (count > nleft) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } - for (z = 0; z < count; ++z) - scanline[i++ * 4 + k] = stbi__get8(s); - } - } - } - for (i=0; i < width; ++i) - stbi__hdr_convert(hdr_data+(j*width + i)*req_comp, scanline + i*4, req_comp); - } - if (scanline) - STBI_FREE(scanline); - } - - return hdr_data; -} - -static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp) -{ - char buffer[STBI__HDR_BUFLEN]; - char *token; - int valid = 0; - int dummy; - - if (!x) x = &dummy; - if (!y) y = &dummy; - if (!comp) comp = &dummy; - - if (stbi__hdr_test(s) == 0) { - stbi__rewind( s ); - return 0; - } - - for(;;) { - token = stbi__hdr_gettoken(s,buffer); - if (token[0] == 0) break; - if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; - } - - if (!valid) { - stbi__rewind( s ); - return 0; - } - token = stbi__hdr_gettoken(s,buffer); - if (strncmp(token, "-Y ", 3)) { - stbi__rewind( s ); - return 0; - } - token += 3; - *y = (int) strtol(token, &token, 10); - while (*token == ' ') ++token; - if (strncmp(token, "+X ", 3)) { - stbi__rewind( s ); - return 0; - } - token += 3; - *x = (int) strtol(token, NULL, 10); - *comp = 3; - return 1; -} -#endif // STBI_NO_HDR - -#ifndef STBI_NO_BMP -static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp) -{ - void *p; - stbi__bmp_data info; - - info.all_a = 255; - p = stbi__bmp_parse_header(s, &info); - stbi__rewind( s ); - if (p == NULL) - return 0; - if (x) *x = s->img_x; - if (y) *y = s->img_y; - if (comp) *comp = info.ma ? 4 : 3; - return 1; -} -#endif - -#ifndef STBI_NO_PSD -static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp) -{ - int channelCount, dummy; - if (!x) x = &dummy; - if (!y) y = &dummy; - if (!comp) comp = &dummy; - if (stbi__get32be(s) != 0x38425053) { - stbi__rewind( s ); - return 0; - } - if (stbi__get16be(s) != 1) { - stbi__rewind( s ); - return 0; - } - stbi__skip(s, 6); - channelCount = stbi__get16be(s); - if (channelCount < 0 || channelCount > 16) { - stbi__rewind( s ); - return 0; - } - *y = stbi__get32be(s); - *x = stbi__get32be(s); - if (stbi__get16be(s) != 8) { - stbi__rewind( s ); - return 0; - } - if (stbi__get16be(s) != 3) { - stbi__rewind( s ); - return 0; - } - *comp = 4; - return 1; -} -#endif - -#ifndef STBI_NO_PIC -static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp) -{ - int act_comp=0,num_packets=0,chained,dummy; - stbi__pic_packet packets[10]; - - if (!x) x = &dummy; - if (!y) y = &dummy; - if (!comp) comp = &dummy; - - if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) { - stbi__rewind(s); - return 0; - } - - stbi__skip(s, 88); - - *x = stbi__get16be(s); - *y = stbi__get16be(s); - if (stbi__at_eof(s)) { - stbi__rewind( s); - return 0; - } - if ( (*x) != 0 && (1 << 28) / (*x) < (*y)) { - stbi__rewind( s ); - return 0; - } - - stbi__skip(s, 8); - - do { - stbi__pic_packet *packet; - - if (num_packets==sizeof(packets)/sizeof(packets[0])) - return 0; - - packet = &packets[num_packets++]; - chained = stbi__get8(s); - packet->size = stbi__get8(s); - packet->type = stbi__get8(s); - packet->channel = stbi__get8(s); - act_comp |= packet->channel; - - if (stbi__at_eof(s)) { - stbi__rewind( s ); - return 0; - } - if (packet->size != 8) { - stbi__rewind( s ); - return 0; - } - } while (chained); - - *comp = (act_comp & 0x10 ? 4 : 3); - - return 1; -} -#endif - -// ************************************************************************************************* -// Portable Gray Map and Portable Pixel Map loader -// by Ken Miller -// -// PGM: http://netpbm.sourceforge.net/doc/pgm.html -// PPM: http://netpbm.sourceforge.net/doc/ppm.html -// -// Known limitations: -// Does not support comments in the header section -// Does not support ASCII image data (formats P2 and P3) -// Does not support 16-bit-per-channel - -#ifndef STBI_NO_PNM - -static int stbi__pnm_test(stbi__context *s) -{ - char p, t; - p = (char) stbi__get8(s); - t = (char) stbi__get8(s); - if (p != 'P' || (t != '5' && t != '6')) { - stbi__rewind( s ); - return 0; - } - return 1; -} - -static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - stbi_uc *out; - STBI_NOTUSED(ri); - - if (!stbi__pnm_info(s, (int *)&s->img_x, (int *)&s->img_y, (int *)&s->img_n)) - return 0; - - *x = s->img_x; - *y = s->img_y; - if (comp) *comp = s->img_n; - - if (!stbi__mad3sizes_valid(s->img_n, s->img_x, s->img_y, 0)) - return stbi__errpuc("too large", "PNM too large"); - - out = (stbi_uc *) stbi__malloc_mad3(s->img_n, s->img_x, s->img_y, 0); - if (!out) return stbi__errpuc("outofmem", "Out of memory"); - stbi__getn(s, out, s->img_n * s->img_x * s->img_y); - - if (req_comp && req_comp != s->img_n) { - out = stbi__convert_format(out, s->img_n, req_comp, s->img_x, s->img_y); - if (out == NULL) return out; // stbi__convert_format frees input on failure - } - return out; -} - -static int stbi__pnm_isspace(char c) -{ - return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r'; -} - -static void stbi__pnm_skip_whitespace(stbi__context *s, char *c) -{ - for (;;) { - while (!stbi__at_eof(s) && stbi__pnm_isspace(*c)) - *c = (char) stbi__get8(s); - - if (stbi__at_eof(s) || *c != '#') - break; - - while (!stbi__at_eof(s) && *c != '\n' && *c != '\r' ) - *c = (char) stbi__get8(s); - } -} - -static int stbi__pnm_isdigit(char c) -{ - return c >= '0' && c <= '9'; -} - -static int stbi__pnm_getinteger(stbi__context *s, char *c) -{ - int value = 0; - - while (!stbi__at_eof(s) && stbi__pnm_isdigit(*c)) { - value = value*10 + (*c - '0'); - *c = (char) stbi__get8(s); - } - - return value; -} - -static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp) -{ - int maxv, dummy; - char c, p, t; - - if (!x) x = &dummy; - if (!y) y = &dummy; - if (!comp) comp = &dummy; - - stbi__rewind(s); - - // Get identifier - p = (char) stbi__get8(s); - t = (char) stbi__get8(s); - if (p != 'P' || (t != '5' && t != '6')) { - stbi__rewind(s); - return 0; - } - - *comp = (t == '6') ? 3 : 1; // '5' is 1-component .pgm; '6' is 3-component .ppm - - c = (char) stbi__get8(s); - stbi__pnm_skip_whitespace(s, &c); - - *x = stbi__pnm_getinteger(s, &c); // read width - stbi__pnm_skip_whitespace(s, &c); - - *y = stbi__pnm_getinteger(s, &c); // read height - stbi__pnm_skip_whitespace(s, &c); - - maxv = stbi__pnm_getinteger(s, &c); // read max value - - if (maxv > 255) - return stbi__err("max value > 255", "PPM image not 8-bit"); - else - return 1; -} -#endif - -static int stbi__info_main(stbi__context *s, int *x, int *y, int *comp) -{ - #ifndef STBI_NO_JPEG - if (stbi__jpeg_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_PNG - if (stbi__png_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_GIF - if (stbi__gif_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_BMP - if (stbi__bmp_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_PSD - if (stbi__psd_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_PIC - if (stbi__pic_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_PNM - if (stbi__pnm_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_HDR - if (stbi__hdr_info(s, x, y, comp)) return 1; - #endif - - // test tga last because it's a crappy test! - #ifndef STBI_NO_TGA - if (stbi__tga_info(s, x, y, comp)) - return 1; - #endif - return stbi__err("unknown image type", "Image not of any known type, or corrupt"); -} - -#ifndef STBI_NO_STDIO -STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp) -{ - FILE *f = stbi__fopen(filename, "rb"); - int result; - if (!f) return stbi__err("can't fopen", "Unable to open file"); - result = stbi_info_from_file(f, x, y, comp); - fclose(f); - return result; -} - -STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp) -{ - int r; - stbi__context s; - long pos = ftell(f); - stbi__start_file(&s, f); - r = stbi__info_main(&s,x,y,comp); - fseek(f,pos,SEEK_SET); - return r; -} -#endif // !STBI_NO_STDIO - -STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp) -{ - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__info_main(&s,x,y,comp); -} - -STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int *x, int *y, int *comp) -{ - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); - return stbi__info_main(&s,x,y,comp); -} - -#endif // STB_IMAGE_IMPLEMENTATION - -/* - revision history: - 2.16 (2017-07-23) all functions have 16-bit variants; - STBI_NO_STDIO works again; - compilation fixes; - fix rounding in unpremultiply; - optimize vertical flip; - disable raw_len validation; - documentation fixes - 2.15 (2017-03-18) fix png-1,2,4 bug; now all Imagenet JPGs decode; - warning fixes; disable run-time SSE detection on gcc; - uniform handling of optional "return" values; - thread-safe initialization of zlib tables - 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs - 2.13 (2016-11-29) add 16-bit API, only supported for PNG right now - 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes - 2.11 (2016-04-02) allocate large structures on the stack - remove white matting for transparent PSD - fix reported channel count for PNG & BMP - re-enable SSE2 in non-gcc 64-bit - support RGB-formatted JPEG - read 16-bit PNGs (only as 8-bit) - 2.10 (2016-01-22) avoid warning introduced in 2.09 by STBI_REALLOC_SIZED - 2.09 (2016-01-16) allow comments in PNM files - 16-bit-per-pixel TGA (not bit-per-component) - info() for TGA could break due to .hdr handling - info() for BMP to shares code instead of sloppy parse - can use STBI_REALLOC_SIZED if allocator doesn't support realloc - code cleanup - 2.08 (2015-09-13) fix to 2.07 cleanup, reading RGB PSD as RGBA - 2.07 (2015-09-13) fix compiler warnings - partial animated GIF support - limited 16-bpc PSD support - #ifdef unused functions - bug with < 92 byte PIC,PNM,HDR,TGA - 2.06 (2015-04-19) fix bug where PSD returns wrong '*comp' value - 2.05 (2015-04-19) fix bug in progressive JPEG handling, fix warning - 2.04 (2015-04-15) try to re-enable SIMD on MinGW 64-bit - 2.03 (2015-04-12) extra corruption checking (mmozeiko) - stbi_set_flip_vertically_on_load (nguillemot) - fix NEON support; fix mingw support - 2.02 (2015-01-19) fix incorrect assert, fix warning - 2.01 (2015-01-17) fix various warnings; suppress SIMD on gcc 32-bit without -msse2 - 2.00b (2014-12-25) fix STBI_MALLOC in progressive JPEG - 2.00 (2014-12-25) optimize JPG, including x86 SSE2 & NEON SIMD (ryg) - progressive JPEG (stb) - PGM/PPM support (Ken Miller) - STBI_MALLOC,STBI_REALLOC,STBI_FREE - GIF bugfix -- seemingly never worked - STBI_NO_*, STBI_ONLY_* - 1.48 (2014-12-14) fix incorrectly-named assert() - 1.47 (2014-12-14) 1/2/4-bit PNG support, both direct and paletted (Omar Cornut & stb) - optimize PNG (ryg) - fix bug in interlaced PNG with user-specified channel count (stb) - 1.46 (2014-08-26) - fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG - 1.45 (2014-08-16) - fix MSVC-ARM internal compiler error by wrapping malloc - 1.44 (2014-08-07) - various warning fixes from Ronny Chevalier - 1.43 (2014-07-15) - fix MSVC-only compiler problem in code changed in 1.42 - 1.42 (2014-07-09) - don't define _CRT_SECURE_NO_WARNINGS (affects user code) - fixes to stbi__cleanup_jpeg path - added STBI_ASSERT to avoid requiring assert.h - 1.41 (2014-06-25) - fix search&replace from 1.36 that messed up comments/error messages - 1.40 (2014-06-22) - fix gcc struct-initialization warning - 1.39 (2014-06-15) - fix to TGA optimization when req_comp != number of components in TGA; - fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite) - add support for BMP version 5 (more ignored fields) - 1.38 (2014-06-06) - suppress MSVC warnings on integer casts truncating values - fix accidental rename of 'skip' field of I/O - 1.37 (2014-06-04) - remove duplicate typedef - 1.36 (2014-06-03) - convert to header file single-file library - if de-iphone isn't set, load iphone images color-swapped instead of returning NULL - 1.35 (2014-05-27) - various warnings - fix broken STBI_SIMD path - fix bug where stbi_load_from_file no longer left file pointer in correct place - fix broken non-easy path for 32-bit BMP (possibly never used) - TGA optimization by Arseny Kapoulkine - 1.34 (unknown) - use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case - 1.33 (2011-07-14) - make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements - 1.32 (2011-07-13) - support for "info" function for all supported filetypes (SpartanJ) - 1.31 (2011-06-20) - a few more leak fixes, bug in PNG handling (SpartanJ) - 1.30 (2011-06-11) - added ability to load files via callbacks to accomidate custom input streams (Ben Wenger) - removed deprecated format-specific test/load functions - removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway - error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha) - fix inefficiency in decoding 32-bit BMP (David Woo) - 1.29 (2010-08-16) - various warning fixes from Aurelien Pocheville - 1.28 (2010-08-01) - fix bug in GIF palette transparency (SpartanJ) - 1.27 (2010-08-01) - cast-to-stbi_uc to fix warnings - 1.26 (2010-07-24) - fix bug in file buffering for PNG reported by SpartanJ - 1.25 (2010-07-17) - refix trans_data warning (Won Chun) - 1.24 (2010-07-12) - perf improvements reading from files on platforms with lock-heavy fgetc() - minor perf improvements for jpeg - deprecated type-specific functions so we'll get feedback if they're needed - attempt to fix trans_data warning (Won Chun) - 1.23 fixed bug in iPhone support - 1.22 (2010-07-10) - removed image *writing* support - stbi_info support from Jetro Lauha - GIF support from Jean-Marc Lienher - iPhone PNG-extensions from James Brown - warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva) - 1.21 fix use of 'stbi_uc' in header (reported by jon blow) - 1.20 added support for Softimage PIC, by Tom Seddon - 1.19 bug in interlaced PNG corruption check (found by ryg) - 1.18 (2008-08-02) - fix a threading bug (local mutable static) - 1.17 support interlaced PNG - 1.16 major bugfix - stbi__convert_format converted one too many pixels - 1.15 initialize some fields for thread safety - 1.14 fix threadsafe conversion bug - header-file-only version (#define STBI_HEADER_FILE_ONLY before including) - 1.13 threadsafe - 1.12 const qualifiers in the API - 1.11 Support installable IDCT, colorspace conversion routines - 1.10 Fixes for 64-bit (don't use "unsigned long") - optimized upsampling by Fabian "ryg" Giesen - 1.09 Fix format-conversion for PSD code (bad global variables!) - 1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz - 1.07 attempt to fix C++ warning/errors again - 1.06 attempt to fix C++ warning/errors again - 1.05 fix TGA loading to return correct *comp and use good luminance calc - 1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free - 1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR - 1.02 support for (subset of) HDR files, float interface for preferred access to them - 1.01 fix bug: possible bug in handling right-side up bmps... not sure - fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all - 1.00 interface to zlib that skips zlib header - 0.99 correct handling of alpha in palette - 0.98 TGA loader by lonesock; dynamically add loaders (untested) - 0.97 jpeg errors on too large a file; also catch another malloc failure - 0.96 fix detection of invalid v value - particleman@mollyrocket forum - 0.95 during header scan, seek to markers in case of padding - 0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same - 0.93 handle jpegtran output; verbose errors - 0.92 read 4,8,16,24,32-bit BMP files of several formats - 0.91 output 24-bit Windows 3.0 BMP files - 0.90 fix a few more warnings; bump version number to approach 1.0 - 0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd - 0.60 fix compiling as c++ - 0.59 fix warnings: merge Dave Moore's -Wall fixes - 0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian - 0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available - 0.56 fix bug: zlib uncompressed mode len vs. nlen - 0.55 fix bug: restart_interval not initialized to 0 - 0.54 allow NULL for 'int *comp' - 0.53 fix bug in png 3->4; speedup png decoding - 0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments - 0.51 obey req_comp requests, 1-component jpegs return as 1-component, - on 'test' only check type, not whether we support this variant - 0.50 (2006-11-19) - first released version -*/ - - -/* ------------------------------------------------------------------------------- -This software is available under 2 licenses -- choose whichever you prefer. ------------------------------------------------------------------------------- -ALTERNATIVE A - MIT License -Copyright (c) 2017 Sean Barrett -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files (the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies -of the Software, and to permit persons to whom the Software is furnished to do -so, subject to the following conditions: -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. ------------------------------------------------------------------------------- -ALTERNATIVE B - Public Domain (www.unlicense.org) -This is free and unencumbered software released into the public domain. -Anyone is free to copy, modify, publish, use, compile, sell, or distribute this -software, either in source code form or as a compiled binary, for any purpose, -commercial or non-commercial, and by any means. -In jurisdictions that recognize copyright laws, the author or authors of this -software dedicate any and all copyright interest in the software to the public -domain. We make this dedication for the benefit of the public at large and to -the detriment of our heirs and successors. We intend this dedication to be an -overt act of relinquishment in perpetuity of all present and future rights to -this software under copyright law. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN -ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ------------------------------------------------------------------------------- -*/ diff --git a/tests/StbImageWriteSharp.Testing/Program.cs b/tests/StbImageWriteSharp.Testing/Program.cs deleted file mode 100644 index 6d4f776..0000000 --- a/tests/StbImageWriteSharp.Testing/Program.cs +++ /dev/null @@ -1,249 +0,0 @@ -using System; -using System.Diagnostics; -using System.IO; -using System.Linq; -using System.Threading; -using System.Threading.Tasks; -using StbImageSharp; -using StbImageWriteSharp; -using StbNative; - -namespace StbSharp.Tests -{ - internal static class Program - { - private static int tasksStarted; - private static int filesProcessed; - private static int stbSharpWrite; - private static int stbNativeWrite; - - private delegate void WriteDelegate(byte[] data, int width, int height, StbImageWriteSharp.ColorComponents components, Stream stream); - - private const int LoadTries = 10; - - private static readonly int[] JpgQualities = {1, 4, 8, 16, 25, 32, 50, 64, 72, 80, 90, 100}; - private static readonly string[] FormatNames = {"BMP", "TGA", "HDR", "PNG", "JPG"}; - - public static void Log(string message) - { - Console.WriteLine(Thread.CurrentThread.ManagedThreadId + " -- " + message); - } - - public static void Log(string format, params object[] args) - { - Log(string.Format(format, args)); - } - - private static void BeginWatch(Stopwatch sw) - { - sw.Restart(); - } - - private static int EndWatch(Stopwatch sw) - { - sw.Stop(); - return (int) sw.ElapsedMilliseconds; - } - - public static bool RunTests() - { - var imagesPath = "..\\..\\..\\TestImages"; - - var files = Directory.EnumerateFiles(imagesPath, "*.*", SearchOption.AllDirectories).ToArray(); - Log("Files count: {0}", files.Length); - - foreach (var file in files) - { - Task.Factory.StartNew(() => { ThreadProc(file); }); - tasksStarted++; - } - - while (true) - { - Thread.Sleep(1000); - - if (tasksStarted == 0) - { - break; - } - } - - return true; - } - - private static void ThreadProc(string f) - { - try - { - var sw = new Stopwatch(); - - if (!f.EndsWith(".bmp") && !f.EndsWith(".jpg") && !f.EndsWith(".png") && - !f.EndsWith(".jpg") && !f.EndsWith(".psd") && !f.EndsWith(".pic") && - !f.EndsWith(".tga")) - { - return; - } - - Log(string.Empty); - Log("{0} -- #{1}: Loading {2} into memory", DateTime.Now.ToLongTimeString(), filesProcessed, f); - var data = File.ReadAllBytes(f); - Log("----------------------------"); - var image = ImageResult.FromMemory(data); - - for (var k = 0; k <= 4; ++k) - { - Log("Saving as {0} with StbSharp", FormatNames[k]); - - if (k < 4) - { - var writer = new ImageWriter(); - WriteDelegate wd = null; - switch (k) - { - case 0: - wd = writer.WriteBmp; - break; - case 1: - wd = writer.WriteTga; - break; - case 2: - wd = writer.WriteHdr; - break; - case 3: - wd = writer.WritePng; - break; - } - - byte[] save; - BeginWatch(sw); - using (var stream = new MemoryStream()) - { - wd(image.Data, image.Width, image.Height, (StbImageWriteSharp.ColorComponents)image.Comp, stream); - save = stream.ToArray(); - } - - var passed = EndWatch(sw); - stbSharpWrite += passed; - Log("Span: {0} ms", passed); - Log("StbSharp Size: {0}", save.Length); - - Log("Saving as {0} with Stb.Native", FormatNames[k]); - BeginWatch(sw); - byte[] save2; - using (var stream = new MemoryStream()) - { - Native.save_to_stream(image.Data, image.Width, image.Height, (int)image.Comp, k, stream); - save2 = stream.ToArray(); - } - - passed = EndWatch(sw); - stbNativeWrite += passed; - - Log("Span: {0} ms", passed); - Log("Stb.Native Size: {0}", save2.Length); - - if (save.Length != save2.Length) - { - throw new Exception(string.Format("Inconsistent output size: StbSharp={0}, Stb.Native={1}", - save.Length, save2.Length)); - } - - for (var i = 0; i < save.Length; ++i) - { - if (save[i] != save2[i]) - { - throw new Exception(string.Format("Inconsistent data: index={0}, StbSharp={1}, Stb.Native={2}", - i, - (int) save[i], - (int) save2[i])); - } - } - } - else - { - for (var qi = 0; qi < JpgQualities.Length; ++qi) - { - var quality = JpgQualities[qi]; - Log("Saving as JPG with StbSharp with quality={0}", quality); - byte[] save; - BeginWatch(sw); - using (var stream = new MemoryStream()) - { - var writer = new ImageWriter(); - writer.WriteJpg(image.Data, image.Width, image.Height, (StbImageWriteSharp.ColorComponents)image.Comp, stream, quality); - save = stream.ToArray(); - } - - var passed = EndWatch(sw); - stbSharpWrite += passed; - - Log("Span: {0} ms", passed); - Log("StbSharp Size: {0}", save.Length); - - Log("Saving as JPG with Stb.Native with quality={0}", quality); - BeginWatch(sw); - byte[] save2; - using (var stream = new MemoryStream()) - { - Native.save_to_jpg(image.Data, image.Width, image.Height, (int)image.Comp, stream, quality); - save2 = stream.ToArray(); - } - - passed = EndWatch(sw); - stbNativeWrite += passed; - - Log("Span: {0} ms", passed); - Log("Stb.Native Size: {0}", save2.Length); - - if (save.Length != save2.Length) - { - throw new Exception(string.Format("Inconsistent output size: StbSharp={0}, Stb.Native={1}", - save.Length, save2.Length)); - } - - for (var i = 0; i < save.Length; ++i) - { - if (save[i] != save2[i]) - { - throw new Exception(string.Format("Inconsistent data: index={0}, StbSharp={1}, Stb.Native={2}", - i, - (int) save[i], - (int) save2[i])); - } - } - } - } - } - - Log("Total StbSharp Write Time: {0} ms", stbSharpWrite); - Log("Total Stb.Native Write Time: {0} ms", stbNativeWrite); - Log("GC Memory: {0}", GC.GetTotalMemory(true)); - Log("Native Allocations: {0}", StbImageWriteSharp.MemoryStats.Allocations); - - ++filesProcessed; - Log(DateTime.Now.ToLongTimeString() + " -- " + " Files processed: " + filesProcessed); - - } - catch (Exception ex) - { - Log("Error: " + ex.Message); - } - finally - { - --tasksStarted; - } - } - - public static int Main(string[] args) - { - var start = DateTime.Now; - - var res = RunTests(); - var passed = DateTime.Now - start; - Log("Span: {0} ms", passed.TotalMilliseconds); - Log(DateTime.Now.ToLongTimeString() + " -- " + (res ? "Success" : "Failure")); - - return res ? 1 : 0; - } - } -} \ No newline at end of file diff --git a/tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs b/tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs deleted file mode 100644 index 6df0829..0000000 --- a/tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs +++ /dev/null @@ -1,36 +0,0 @@ -using System.Reflection; -using System.Runtime.CompilerServices; -using System.Runtime.InteropServices; - -// General Information about an assembly is controlled through the following -// set of attributes. Change these attribute values to modify the information -// associated with an assembly. -[assembly: AssemblyTitle("StbImageSharp.Testing")] -[assembly: AssemblyDescription("")] -[assembly: AssemblyConfiguration("")] -[assembly: AssemblyCompany("")] -[assembly: AssemblyProduct("StbImageSharp.Testing")] -[assembly: AssemblyCopyright("Copyright © 2019")] -[assembly: AssemblyTrademark("")] -[assembly: AssemblyCulture("")] - -// Setting ComVisible to false makes the types in this assembly not visible -// to COM components. If you need to access a type in this assembly from -// COM, set the ComVisible attribute to true on that type. -[assembly: ComVisible(false)] - -// The following GUID is for the ID of the typelib if this project is exposed to COM -[assembly: Guid("1cba18d9-3b9b-4f6a-8729-3e88abc98c33")] - -// Version information for an assembly consists of the following four values: -// -// Major Version -// Minor Version -// Build Number -// Revision -// -// You can specify all the values or you can default the Build and Revision Numbers -// by using the '*' as shown below: -// [assembly: AssemblyVersion("1.0.*")] -[assembly: AssemblyVersion("1.0.0.0")] -[assembly: AssemblyFileVersion("1.0.0.0")] diff --git a/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj b/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj deleted file mode 100644 index e7dd07c..0000000 --- a/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj +++ /dev/null @@ -1,65 +0,0 @@ - - - - - Debug - AnyCPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6} - Exe - StbImageWriteSharp.Testing - StbImageWriteSharp.Testing - v4.5 - 512 - true - - - AnyCPU - true - full - false - bin\Debug\ - DEBUG;TRACE - prompt - 4 - - - AnyCPU - pdbonly - true - bin\Release\ - TRACE - prompt - 4 - - - - ..\..\build\packages\StbImageSharp.2.22.2\lib\net45\StbImageSharp.dll - - - - - - - - - - - - - - - - - {e674856c-c482-4a80-ad30-37c58ea38967} - StbImageWriteSharp - - - {ea7b8121-942a-437d-85d5-e4d55b94e88a} - Stb.Native - - - - - - - \ No newline at end of file diff --git a/tests/StbImageWriteSharp.Testing/packages.config b/tests/StbImageWriteSharp.Testing/packages.config deleted file mode 100644 index 4ecc580..0000000 --- a/tests/StbImageWriteSharp.Testing/packages.config +++ /dev/null @@ -1,4 +0,0 @@ - - - - \ No newline at end of file diff --git a/tests/TestImages b/tests/TestImages deleted file mode 160000 index cffc746..0000000 --- a/tests/TestImages +++ /dev/null @@ -1 +0,0 @@ -Subproject commit cffc7465374fe52227d327302a9daa822b35e7d7 From b038a04cdf65c68fc6c8cad0dfd100c764ea582b Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Fri, 9 Aug 2019 22:07:46 +0700 Subject: [PATCH 02/23] Update README.md --- README.md | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/README.md b/README.md index c3fbc50..bf596f0 100644 --- a/README.md +++ b/README.md @@ -8,6 +8,19 @@ It is important to note, that this project is **port**(not **wrapper**). Origina The porting hasn't been done by hand, but using [Sichem](https://github.com/rds1983/Sichem), which is the C to C# code converter utility. +# Adding Reference +There are two ways of referencing StbImageWriteSharp in the project: +1. Through nuget: `install-package StbImageWriteSharp` +2. As submodule: + + a. `git submodule add https://github.com/StbSharp/StbImageWriteSharp.git` + + b. Now there are two options: + + * Add StbImageWriteSharp/src/StbImageWriteSharp/StbImageWriteSharp.csproj to the solution + + * Include *.cs from StbImageWriteSharp/src/StbImageWriteSharp directly in the project. In this case, it might make sense to add STBSHARP_INTERNAL build compilation symbol to the project, so StbImageWriteSharp classes would become internal. + # Usage StbImageWriteSharp exposes API similar to stb_image_write.h. However that API is complicated and deals with raw unsafe pointers. From 6c13bbc48ea5dea9136262b67e70bff1e18ab0ab Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Sun, 11 Aug 2019 17:51:38 +0700 Subject: [PATCH 03/23] Added ability to pass raw pointers to save methods. --- src/StbImageWriteSharp/ImageWriter.cs | 94 +++++++++++++++++---------- 1 file changed, 60 insertions(+), 34 deletions(-) diff --git a/src/StbImageWriteSharp/ImageWriter.cs b/src/StbImageWriteSharp/ImageWriter.cs index 68658bf..716c72e 100644 --- a/src/StbImageWriteSharp/ImageWriter.cs +++ b/src/StbImageWriteSharp/ImageWriter.cs @@ -7,7 +7,7 @@ namespace StbImageWriteSharp #if !STBSHARP_INTERNAL public #else - internal + internal #endif unsafe class ImageWriter { @@ -23,10 +23,10 @@ private int WriteCallback(void* context, void* data, int size) if (_buffer.Length < size) { - _buffer = new byte[size*2]; + _buffer = new byte[size * 2]; } - var bptr = (byte*) data; + var bptr = (byte*)data; Marshal.Copy(new IntPtr(bptr), _buffer, 0, size); @@ -60,17 +60,12 @@ private void CheckParams(byte[] data, int width, int height, ColorComponents com } } - public void WriteBmp(byte[] data, int width, int height, ColorComponents components, Stream dest) + public void WriteBmp(void* data, int width, int height, ColorComponents components, Stream dest) { - CheckParams(data, width, height, components); - try { _stream = dest; - fixed (byte* b = &data[0]) - { - StbImageWrite.stbi_write_bmp_to_func(WriteCallback, null, width, height, (int)components, b); - } + StbImageWrite.stbi_write_bmp_to_func(WriteCallback, null, width, height, (int)components, data); } finally { @@ -78,17 +73,22 @@ public void WriteBmp(byte[] data, int width, int height, ColorComponents compone } } - public void WriteTga(byte[] data, int width, int height, ColorComponents components, Stream dest) + public void WriteBmp(byte[] data, int width, int height, ColorComponents components, Stream dest) { CheckParams(data, width, height, components); + fixed (byte* b = &data[0]) + { + WriteBmp(b, width, height, components, dest); + } + } + + public void WriteTga(void* data, int width, int height, ColorComponents components, Stream dest) + { try { _stream = dest; - fixed (byte* b = &data[0]) - { - StbImageWrite.stbi_write_tga_to_func(WriteCallback, null, width, height, (int)components, b); - } + StbImageWrite.stbi_write_tga_to_func(WriteCallback, null, width, height, (int)components, data); } finally { @@ -96,6 +96,16 @@ public void WriteTga(byte[] data, int width, int height, ColorComponents compone } } + public void WriteTga(byte[] data, int width, int height, ColorComponents components, Stream dest) + { + CheckParams(data, width, height, components); + + fixed (byte* b = &data[0]) + { + WriteTga(b, width, height, components, dest); + } + } + public void WriteHdr(byte[] data, int width, int height, ColorComponents components, Stream dest) { CheckParams(data, width, height, components); @@ -106,7 +116,7 @@ public void WriteHdr(byte[] data, int width, int height, ColorComponents compone var f = new float[data.Length]; for (var i = 0; i < data.Length; ++i) { - f[i] = data[i]/255.0f; + f[i] = data[i] / 255.0f; } fixed (float* fptr = f) @@ -120,19 +130,14 @@ public void WriteHdr(byte[] data, int width, int height, ColorComponents compone } } - public void WritePng(byte[] data, int width, int height, ColorComponents components, Stream dest) + public void WritePng(void* data, int width, int height, ColorComponents components, Stream dest) { - CheckParams(data, width, height, components); - try { _stream = dest; - fixed (byte* b = &data[0]) - { - StbImageWrite.stbi_write_png_to_func(WriteCallback, null, width, height, (int)components, b, - width*(int)components); - } + StbImageWrite.stbi_write_png_to_func(WriteCallback, null, width, height, (int)components, data, + width * (int)components); } finally { @@ -140,29 +145,50 @@ public void WritePng(byte[] data, int width, int height, ColorComponents compone } } + public void WritePng(byte[] data, int width, int height, ColorComponents components, Stream dest) + { + CheckParams(data, width, height, components); + + fixed (byte* b = &data[0]) + { + WritePng(data, width, height, components, dest); + } + } + /// /// /// - /// + /// /// - /// Should be beetween 1 & 100 - public void WriteJpg(byte[] data, int width, int height, ColorComponents components, Stream dest, int quality) + /// Should be from 1 to 100 + public void WriteJpg(void* data, int width, int height, ColorComponents components, Stream dest, int quality) { - CheckParams(data, width, height, components); - try { _stream = dest; - fixed (byte* b = &data[0]) - { - StbImageWrite.stbi_write_jpg_to_func(WriteCallback, null, width, height, (int)components, b, quality); - } + StbImageWrite.stbi_write_jpg_to_func(WriteCallback, null, width, height, (int)components, data, quality); } finally { _stream = null; } } + + /// + /// + /// + /// + /// + /// Should be from 1 to 100 + public void WriteJpg(byte[] data, int width, int height, ColorComponents components, Stream dest, int quality) + { + CheckParams(data, width, height, components); + + fixed (byte* b = &data[0]) + { + WriteJpg(b, width, height, components, dest, quality); + } + } } -} \ No newline at end of file +} From 3aede22e4d8456c4724c83eb72938ebf6ec77b8a Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Wed, 21 Aug 2019 00:46:50 +0700 Subject: [PATCH 04/23] Fixed some warnings --- src/StbImageWriteSharp/ImageWriter.cs | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/StbImageWriteSharp/ImageWriter.cs b/src/StbImageWriteSharp/ImageWriter.cs index 716c72e..639d7d3 100644 --- a/src/StbImageWriteSharp/ImageWriter.cs +++ b/src/StbImageWriteSharp/ImageWriter.cs @@ -159,6 +159,9 @@ public void WritePng(byte[] data, int width, int height, ColorComponents compone /// /// /// + /// + /// + /// /// /// Should be from 1 to 100 public void WriteJpg(void* data, int width, int height, ColorComponents components, Stream dest, int quality) @@ -179,6 +182,9 @@ public void WriteJpg(void* data, int width, int height, ColorComponents componen /// /// /// + /// + /// + /// /// /// Should be from 1 to 100 public void WriteJpg(byte[] data, int width, int height, ColorComponents components, Stream dest, int quality) From 4261b83db18cd8a8a6c776dae339b61603e63ff5 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Thu, 19 Sep 2019 14:32:03 +0700 Subject: [PATCH 05/23] Update README.md --- README.md | 3 +++ 1 file changed, 3 insertions(+) diff --git a/README.md b/README.md index bf596f0..4a03131 100644 --- a/README.md +++ b/README.md @@ -38,6 +38,9 @@ using (Stream stream = File.OpenWrite(path)) # License Public Domain +# Who uses it? +[MonoGame](http://www.monogame.net/) uses StbImageWriteSharp for Texture2D.SaveAs + # Credits * [stb](https://github.com/nothings/stb) From 44009f66b0d9cdb7b4daf795ca0792465e47e918 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Fri, 1 May 2020 14:07:55 +0700 Subject: [PATCH 06/23] Fixed some warnings --- .../StbImageWrite.Generated.cs | 28 +++---------------- 1 file changed, 4 insertions(+), 24 deletions(-) diff --git a/src/StbImageWriteSharp/StbImageWrite.Generated.cs b/src/StbImageWriteSharp/StbImageWrite.Generated.cs index 4c938ac..b74140d 100644 --- a/src/StbImageWriteSharp/StbImageWrite.Generated.cs +++ b/src/StbImageWriteSharp/StbImageWrite.Generated.cs @@ -620,30 +620,10 @@ public static uint stbiw__zhash(byte* data) _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); } } - if (256 <= 143) - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0x30 + (256)), (int)(8))) << bitcount); - bitcount += (int)(8); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - else if (256 <= 255) - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0x190 + (256) - 144), (int)(9))) << bitcount); - bitcount += (int)(9); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - else if (256 <= 279) - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0 + (256) - 256), (int)(7))) << bitcount); - bitcount += (int)(7); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - else - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0xc0 + (256) - 280), (int)(8))) << bitcount); - bitcount += (int)(8); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } + + bitbuf |= (uint)((stbiw__zlib_bitrev(0, (int)(7))) << bitcount); + bitcount += (int)(7); + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); while ((bitcount) != 0) { From d0f82ab43dd3abd59c3a6ce8c8fcc786c0183c5e Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Mon, 10 Aug 2020 13:57:17 +0700 Subject: [PATCH 07/23] Fixed #2 --- StbImageWriteSharp.sln | 43 + generation/StbImageWriteSharp.Generator.sln | 47 + .../StbImageWriteSharp.Generator/App.config | 6 + .../StbImageWriteSharp.Generator/Program.cs | 220 +++ .../Properties/AssemblyInfo.cs | 36 + .../StbImageWriteSharp.Generator.csproj | 70 + .../stb_image_write.h | 1619 +++++++++++++++++ src/{StbImageWriteSharp => }/CRuntime.cs | 0 .../ColorComponents.cs | 0 src/{StbImageWriteSharp => }/ImageWriter.cs | 2 +- src/{StbImageWriteSharp => }/MemoryStats.cs | 0 .../StbImageWrite.Generated.cs | 0 src/{StbImageWriteSharp => }/StbImageWrite.cs | 0 .../StbImageWriteSharp.csproj | 0 tests/Stb.Native/AssemblyInfo.cpp | 38 + tests/Stb.Native/ReadMe.txt | 38 + tests/Stb.Native/Stb.Native.cpp | 6 + tests/Stb.Native/Stb.Native.h | 137 ++ tests/Stb.Native/Stb.Native.vcxproj | 104 ++ tests/Stb.Native/Stb.Native.vcxproj.filters | 52 + tests/Stb.Native/Stdafx.cpp | 5 + tests/Stb.Native/Stdafx.h | 7 + tests/Stb.Native/app.ico | Bin 0 -> 11001 bytes tests/Stb.Native/app.rc | Bin 0 -> 2546 bytes tests/Stb.Native/resource.h | 3 + tests/StbImageWriteSharp.Testing/Program.cs | 261 +++ .../Properties/AssemblyInfo.cs | 36 + .../StbImageWriteSharp.Testing.csproj | 65 + .../packages.config | 4 + 29 files changed, 2798 insertions(+), 1 deletion(-) create mode 100644 StbImageWriteSharp.sln create mode 100644 generation/StbImageWriteSharp.Generator.sln create mode 100644 generation/StbImageWriteSharp.Generator/App.config create mode 100644 generation/StbImageWriteSharp.Generator/Program.cs create mode 100644 generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs create mode 100644 generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj create mode 100644 generation/StbImageWriteSharp.Generator/stb_image_write.h rename src/{StbImageWriteSharp => }/CRuntime.cs (100%) rename src/{StbImageWriteSharp => }/ColorComponents.cs (100%) rename src/{StbImageWriteSharp => }/ImageWriter.cs (98%) rename src/{StbImageWriteSharp => }/MemoryStats.cs (100%) rename src/{StbImageWriteSharp => }/StbImageWrite.Generated.cs (100%) rename src/{StbImageWriteSharp => }/StbImageWrite.cs (100%) rename src/{StbImageWriteSharp => }/StbImageWriteSharp.csproj (100%) create mode 100644 tests/Stb.Native/AssemblyInfo.cpp create mode 100644 tests/Stb.Native/ReadMe.txt create mode 100644 tests/Stb.Native/Stb.Native.cpp create mode 100644 tests/Stb.Native/Stb.Native.h create mode 100644 tests/Stb.Native/Stb.Native.vcxproj create mode 100644 tests/Stb.Native/Stb.Native.vcxproj.filters create mode 100644 tests/Stb.Native/Stdafx.cpp create mode 100644 tests/Stb.Native/Stdafx.h create mode 100644 tests/Stb.Native/app.ico create mode 100644 tests/Stb.Native/app.rc create mode 100644 tests/Stb.Native/resource.h create mode 100644 tests/StbImageWriteSharp.Testing/Program.cs create mode 100644 tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs create mode 100644 tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj create mode 100644 tests/StbImageWriteSharp.Testing/packages.config diff --git a/StbImageWriteSharp.sln b/StbImageWriteSharp.sln new file mode 100644 index 0000000..2bf3c42 --- /dev/null +++ b/StbImageWriteSharp.sln @@ -0,0 +1,43 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio Version 16 +VisualStudioVersion = 16.0.30309.148 +MinimumVisualStudioVersion = 10.0.40219.1 +Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Tests", "Tests", "{AD5041AC-C96B-42F8-BC8C-BFFD2090B364}" +EndProject +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Stb.Native", "tests\Stb.Native\Stb.Native.vcxproj", "{EA7B8121-942A-437D-85D5-E4D55B94E88A}" +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "StbImageWriteSharp", "src\StbImageWriteSharp.csproj", "{FFAF08E6-C453-444A-BC9A-D0E690F65AD0}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StbImageWriteSharp.Testing", "tests\StbImageWriteSharp.Testing\StbImageWriteSharp.Testing.csproj", "{4295DB99-F5C5-4D33-84DA-02AA2CA141B6}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|Any CPU = Debug|Any CPU + Release|Any CPU = Release|Any CPU + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|Any CPU.ActiveCfg = Debug|Win32 + {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|Any CPU.Build.0 = Debug|Win32 + {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|Any CPU.ActiveCfg = Release|Win32 + {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|Any CPU.Build.0 = Release|Win32 + {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Debug|Any CPU.Build.0 = Debug|Any CPU + {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Release|Any CPU.ActiveCfg = Release|Any CPU + {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Release|Any CPU.Build.0 = Release|Any CPU + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.Build.0 = Debug|Any CPU + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.ActiveCfg = Release|Any CPU + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.Build.0 = Release|Any CPU + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection + GlobalSection(NestedProjects) = preSolution + {EA7B8121-942A-437D-85D5-E4D55B94E88A} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} + EndGlobalSection + GlobalSection(ExtensibilityGlobals) = postSolution + SolutionGuid = {C9C812E7-F89A-4B6E-8F9D-981D5F8BBAB3} + EndGlobalSection +EndGlobal diff --git a/generation/StbImageWriteSharp.Generator.sln b/generation/StbImageWriteSharp.Generator.sln new file mode 100644 index 0000000..09096dd --- /dev/null +++ b/generation/StbImageWriteSharp.Generator.sln @@ -0,0 +1,47 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio Version 16 +VisualStudioVersion = 16.0.30309.148 +MinimumVisualStudioVersion = 10.0.40219.1 +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StbImageWriteSharp.Generator", "StbImageWriteSharp.Generator\StbImageWriteSharp.Generator.csproj", "{2F372A46-2B31-49ED-BEAA-B7D6E72CD983}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Sichem", "..\..\Sichem\Sichem\Sichem.csproj", "{71352218-91C4-490E-A650-AB17C48D0300}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|Any CPU = Debug|Any CPU + Debug|Mixed Platforms = Debug|Mixed Platforms + Debug|x64 = Debug|x64 + Release|Any CPU = Release|Any CPU + Release|Mixed Platforms = Release|Mixed Platforms + Release|x64 = Release|x64 + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Any CPU.ActiveCfg = Debug|x64 + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Mixed Platforms.ActiveCfg = Debug|x64 + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Mixed Platforms.Build.0 = Debug|x64 + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|x64.ActiveCfg = Debug|x64 + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|x64.Build.0 = Debug|x64 + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|Any CPU.ActiveCfg = Release|x64 + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|Mixed Platforms.ActiveCfg = Release|x64 + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|Mixed Platforms.Build.0 = Release|x64 + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|x64.ActiveCfg = Release|x64 + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|x64.Build.0 = Release|x64 + {71352218-91C4-490E-A650-AB17C48D0300}.Debug|Any CPU.ActiveCfg = Debug|x64 + {71352218-91C4-490E-A650-AB17C48D0300}.Debug|Mixed Platforms.ActiveCfg = Debug|x64 + {71352218-91C4-490E-A650-AB17C48D0300}.Debug|Mixed Platforms.Build.0 = Debug|x64 + {71352218-91C4-490E-A650-AB17C48D0300}.Debug|x64.ActiveCfg = Debug|x64 + {71352218-91C4-490E-A650-AB17C48D0300}.Debug|x64.Build.0 = Debug|x64 + {71352218-91C4-490E-A650-AB17C48D0300}.Release|Any CPU.ActiveCfg = Release|x64 + {71352218-91C4-490E-A650-AB17C48D0300}.Release|Mixed Platforms.ActiveCfg = Release|x64 + {71352218-91C4-490E-A650-AB17C48D0300}.Release|Mixed Platforms.Build.0 = Release|x64 + {71352218-91C4-490E-A650-AB17C48D0300}.Release|x64.ActiveCfg = Release|x64 + {71352218-91C4-490E-A650-AB17C48D0300}.Release|x64.Build.0 = Release|x64 + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection + GlobalSection(ExtensibilityGlobals) = postSolution + SolutionGuid = {ACF4E34C-5E6B-44ED-AA80-A1C43BA55B85} + EndGlobalSection +EndGlobal diff --git a/generation/StbImageWriteSharp.Generator/App.config b/generation/StbImageWriteSharp.Generator/App.config new file mode 100644 index 0000000..8e15646 --- /dev/null +++ b/generation/StbImageWriteSharp.Generator/App.config @@ -0,0 +1,6 @@ + + + + + + \ No newline at end of file diff --git a/generation/StbImageWriteSharp.Generator/Program.cs b/generation/StbImageWriteSharp.Generator/Program.cs new file mode 100644 index 0000000..c022637 --- /dev/null +++ b/generation/StbImageWriteSharp.Generator/Program.cs @@ -0,0 +1,220 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Text; +using Sichem; + +namespace StbSharp.StbImage.Generator +{ + class Program + { + private static void Write(Dictionary input, StringBuilder output) + { + foreach (var pair in input) + { + output.Append(pair.Value); + } + } + + private static string PostProcess(string data) + { + data = Utility.ReplaceNativeCalls(data); + + data = data.Replace("((void *)(0))", "null"); + data = data.Replace("(void *)(0)", "null"); + + data = data.Replace("][", ", "); + + data = data.Replace("'J', 'F', 'I', 'F'", + "(byte)'J', (byte)'F', (byte)'I', (byte)'F'"); + + data = data.Replace("int has_alpha = (int)(((comp) == (2)) || ((comp) == (4)));", + "int has_alpha = (((comp) == (2)) || ((comp) == (4)))?1:0;"); + data = data.Replace("*arr?", + "*arr != null?"); + data = data.Replace("sizeof(int)* * 2", + "sizeof(int) * 2"); + data = data.Replace("(int)(sizeof((*(data))))", + "sizeof(byte)"); + data = data.Replace("(int)(sizeof((*(_out_))))", + "sizeof(byte)"); + data = data.Replace("(int)(sizeof((*(hash_table[h]))))", + "sizeof(byte*)"); + data = data.Replace("sizeof((hash_table[h, 0]))", + "sizeof(byte*)"); + data = data.Replace("(byte***)(malloc((ulong)(16384 * sizeof(char**)))))", + "(byte***)(malloc((ulong)(16384 * sizeof(byte**))))"); + data = data.Replace("(hlist)?", + "(hlist != null)?"); + data = data.Replace("(hash_table[i])?", + "(hash_table[i] != null)?"); + + data = data.Replace("ushort* bs", "ushort bs0, ushort bs1"); + data = data.Replace("bs[0]", "bs0"); + data = data.Replace("bs[1]", "bs1"); + + data = data.Replace("ushort** HTDC, ushort** HTAC", "ushort[,] HTDC, ushort[,] HTAC"); + data = data.Replace("HTDC[0]", "HTDC[0, 0], HTDC[0, 1]"); + data = data.Replace("HTDC[bits[1]]", "HTDC[bits[1], 0], HTDC[bits[1], 1]"); + data = data.Replace("HTDC[bits[1]]", "HTDC[bits[1], 0], HTDC[bits[1], 1]"); + data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits);", + "stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]);"); + data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB);", + "stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB[0], EOB[1]);"); + data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes);", + "stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes[0], M16zeroes[1]);"); + data = data.Replace("stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits);", + "stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits[0], fillBits[1]);"); + data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1]]);", + "stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1], 0], HTAC[(nrzeroes << 4) + bits[1], 1]);"); + + data = data.Replace("s.func(s.context, (void *)(head0), (int)(sizeof((head0))));", + "fixed (byte* h = head0) { s.func(s.context, h, head0.Length); }"); + data = data.Replace("(int)(sizeof((YTable)))", "64"); + data = data.Replace("(int)(sizeof((UVTable)))", "64"); + data = data.Replace("(int)(sizeof((head1)))", "24"); + data = data.Replace("s.func(s.context, (void *)(std_dc_luminance_nrcodes + 1), (int)(sizeof((std_dc_luminance_nrcodes)) - 1));", + "fixed (byte* d = &std_dc_luminance_nrcodes[1]) { s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); }"); + data = data.Replace("s.func(s.context, (void *)(std_dc_luminance_values), (int)(sizeof((std_dc_luminance_values))));", + "fixed (byte* d = std_dc_luminance_values) { s.func(s.context, d, std_dc_chrominance_values.Length); }"); + + data = data.Replace("s.func(s.context, (void *)(std_ac_luminance_nrcodes + 1), (int)(sizeof((std_ac_luminance_nrcodes)) - 1));", + "fixed (byte* a = &std_ac_luminance_nrcodes[1]) { s.func(s.context, a, std_ac_luminance_nrcodes.Length - 1); }"); + data = data.Replace("s.func(s.context, (void *)(std_ac_luminance_values), (int)(sizeof((std_ac_luminance_values))));", + "fixed (byte* d = std_ac_luminance_values) { s.func(s.context, d, std_ac_chrominance_values.Length); }"); + + data = data.Replace("s.func(s.context, (void *)(std_dc_chrominance_nrcodes + 1), (int)(sizeof((std_dc_chrominance_nrcodes)) - 1));", + "fixed (byte* d = &std_dc_chrominance_nrcodes[1]) { s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); }"); + data = data.Replace("s.func(s.context, (void *)(std_dc_chrominance_values), (int)(sizeof((std_dc_chrominance_values))));", + "fixed (byte* d = std_dc_chrominance_values) { s.func(s.context, d, std_dc_chrominance_values.Length); }"); + + data = data.Replace("s.func(s.context, (void *)(std_ac_chrominance_nrcodes + 1), (int)(sizeof((std_ac_chrominance_nrcodes)) - 1));", + "fixed (byte* a = &std_ac_chrominance_nrcodes[1]) { s.func(s.context, a, std_ac_chrominance_nrcodes.Length - 1); }"); + data = data.Replace("s.func(s.context, (void *)(std_ac_chrominance_values), (int)(sizeof((std_ac_chrominance_values))));", + "fixed (byte* d = std_ac_chrominance_values) { s.func(s.context, d, std_ac_chrominance_values.Length); }"); + + data = data.Replace("s.func(s.context, (void *)(head2), (int)(sizeof((head2))));", + "fixed (byte* h = head2) { s.func(s.context, h, head2.Length); }"); + + return data; + } + + + static void Process() + { + var parameters = new ConversionParameters + { + InputPath = @"stb_image_write.h", + Defines = new[] + { + "STBI_WRITE_NO_STDIO", + "STB_IMAGE_WRITE_IMPLEMENTATION", + "STB_IMAGE_WRITE_STATIC" + }, + Namespace = "StbImageWriteSharp", + Class = "StbImageWrite", + SkipStructs = new[] + { + "stbi__write_context" + }, + SkipGlobalVariables = new[] + { + "stbi_write_tga_with_rle" + }, + SkipFunctions = new[] + { + "stbi__start_write_callbacks", + "stbiw__writefv", + "stbiw__writef", + "stbiw__outfile", + "stbi_write_bmp_to_func", + "stbi_write_tga_to_func", + "stbi_write_hdr_to_func", + "stbi_write_png_to_func", + "stbi_write_jpg_to_func", + "stbi_write_hdr_core", + }, + Classes = new[] + { + "stbi__write_context" + }, + GlobalArrays = new[] + { + "lengthc", + "lengtheb", + "distc", + "disteb", + "crc_table", + "stbiw__jpg_ZigZag", + "std_dc_luminance_nrcodes", + "std_dc_luminance_values", + "std_ac_luminance_nrcodes", + "std_ac_luminance_values", + "std_dc_chrominance_nrcodes", + "std_dc_chrominance_values", + "std_ac_chrominance_nrcodes", + "std_ac_chrominance_values", + "std_dc_chrominance_nrcodes", + "std_dc_chrominance_values", + "YDC_HT", + "UVDC_HT", + "YAC_HT", + "UVAC_HT", + "YQT", + "UVQT", + "aasf", + "head0", + "head2" + } + }; + + var cp = new ClangParser(); + + var result = cp.Process(parameters); + + // Write output + var sb = new StringBuilder(); + sb.AppendLine(string.Format("// Generated by Sichem at {0}", DateTime.Now)); + sb.AppendLine(); + + sb.AppendLine("using System;"); + sb.AppendLine("using System.Runtime.InteropServices;"); + + sb.AppendLine(); + + sb.Append("namespace StbImageWriteSharp\n{\n\t"); + sb.AppendLine("unsafe partial class StbImageWrite\n\t{"); + + Write(result.Constants, sb); + Write(result.GlobalVariables, sb); + Write(result.Enums, sb); + Write(result.Structs, sb); + Write(result.Methods, sb); + + sb.Append("}\n}"); + var data = sb.ToString(); + + // Post processing + Logger.Info("Post processing..."); + data = PostProcess(data); + + File.WriteAllText(@"..\..\..\..\..\src\StbImageWrite.Generated.cs", data); + } + + static void Main(string[] args) + { + try + { + Process(); + } + catch (Exception ex) + { + Console.WriteLine(ex.Message); + Console.WriteLine(ex.StackTrace); + } + + Console.WriteLine("Finished. Press any key to quit."); + Console.ReadKey(); + } + } +} \ No newline at end of file diff --git a/generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs b/generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs new file mode 100644 index 0000000..48cf2be --- /dev/null +++ b/generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs @@ -0,0 +1,36 @@ +using System.Reflection; +using System.Runtime.CompilerServices; +using System.Runtime.InteropServices; + +// General Information about an assembly is controlled through the following +// set of attributes. Change these attribute values to modify the information +// associated with an assembly. +[assembly: AssemblyTitle("Generator")] +[assembly: AssemblyDescription("")] +[assembly: AssemblyConfiguration("")] +[assembly: AssemblyCompany("")] +[assembly: AssemblyProduct("Generator")] +[assembly: AssemblyCopyright("Copyright © 2016")] +[assembly: AssemblyTrademark("")] +[assembly: AssemblyCulture("")] + +// Setting ComVisible to false makes the types in this assembly not visible +// to COM components. If you need to access a type in this assembly from +// COM, set the ComVisible attribute to true on that type. +[assembly: ComVisible(false)] + +// The following GUID is for the ID of the typelib if this project is exposed to COM +[assembly: Guid("f1343b90-bd64-48d3-9cd2-e1d954dc3da4")] + +// Version information for an assembly consists of the following four values: +// +// Major Version +// Minor Version +// Build Number +// Revision +// +// You can specify all the values or you can default the Build and Revision Numbers +// by using the '*' as shown below: +// [assembly: AssemblyVersion("1.0.*")] +[assembly: AssemblyVersion("1.0.0.0")] +[assembly: AssemblyFileVersion("1.0.0.0")] diff --git a/generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj b/generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj new file mode 100644 index 0000000..d6bb662 --- /dev/null +++ b/generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj @@ -0,0 +1,70 @@ + + + + + Debug + AnyCPU + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983} + Exe + Properties + StbImageWrite.Generator + StbImageWrite.Generator + v4.5 + 512 + ccc2377f + + + true + bin\x64\Debug\ + DEBUG;TRACE + full + x64 + prompt + MinimumRecommendedRules.ruleset + + + bin\x64\Release\ + TRACE + true + pdbonly + x64 + prompt + MinimumRecommendedRules.ruleset + true + + + + + + + + + + + + + + + + + + + + PreserveNewest + + + + + {71352218-91c4-490e-a650-ab17c48d0300} + Sichem + + + + + \ No newline at end of file diff --git a/generation/StbImageWriteSharp.Generator/stb_image_write.h b/generation/StbImageWriteSharp.Generator/stb_image_write.h new file mode 100644 index 0000000..71db70b --- /dev/null +++ b/generation/StbImageWriteSharp.Generator/stb_image_write.h @@ -0,0 +1,1619 @@ +/* stb_image_write - v1.13 - public domain - http://nothings.org/stb/stb_image_write.h + writes out PNG/BMP/TGA/JPEG/HDR images to C stdio - Sean Barrett 2010-2015 + no warranty implied; use at your own risk + + Before #including, + + #define STB_IMAGE_WRITE_IMPLEMENTATION + + in the file that you want to have the implementation. + + Will probably not work correctly with strict-aliasing optimizations. + +ABOUT: + + This header file is a library for writing images to C stdio or a callback. + + The PNG output is not optimal; it is 20-50% larger than the file + written by a decent optimizing implementation; though providing a custom + zlib compress function (see STBIW_ZLIB_COMPRESS) can mitigate that. + This library is designed for source code compactness and simplicity, + not optimal image file size or run-time performance. + +BUILDING: + + You can #define STBIW_ASSERT(x) before the #include to avoid using assert.h. + You can #define STBIW_MALLOC(), STBIW_REALLOC(), and STBIW_FREE() to replace + malloc,realloc,free. + You can #define STBIW_MEMMOVE() to replace memmove() + You can #define STBIW_ZLIB_COMPRESS to use a custom zlib-style compress function + for PNG compression (instead of the builtin one), it must have the following signature: + unsigned char * my_compress(unsigned char *data, int data_len, int *out_len, int quality); + The returned data will be freed with STBIW_FREE() (free() by default), + so it must be heap allocated with STBIW_MALLOC() (malloc() by default), + +UNICODE: + + If compiling for Windows and you wish to use Unicode filenames, compile + with + #define STBIW_WINDOWS_UTF8 + and pass utf8-encoded filenames. Call stbiw_convert_wchar_to_utf8 to convert + Windows wchar_t filenames to utf8. + +USAGE: + + There are five functions, one for each image file format: + + int stbi_write_png(char const *filename, int w, int h, int comp, const void *data, int stride_in_bytes); + int stbi_write_bmp(char const *filename, int w, int h, int comp, const void *data); + int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data); + int stbi_write_jpg(char const *filename, int w, int h, int comp, const void *data, int quality); + int stbi_write_hdr(char const *filename, int w, int h, int comp, const float *data); + + void stbi_flip_vertically_on_write(int flag); // flag is non-zero to flip data vertically + + There are also five equivalent functions that use an arbitrary write function. You are + expected to open/close your file-equivalent before and after calling these: + + int stbi_write_png_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data, int stride_in_bytes); + int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); + int stbi_write_tga_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); + int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const float *data); + int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int quality); + + where the callback is: + void stbi_write_func(void *context, void *data, int size); + + You can configure it with these global variables: + int stbi_write_tga_with_rle; // defaults to true; set to 0 to disable RLE + int stbi_write_png_compression_level; // defaults to 8; set to higher for more compression + int stbi_write_force_png_filter; // defaults to -1; set to 0..5 to force a filter mode + + + You can define STBI_WRITE_NO_STDIO to disable the file variant of these + functions, so the library will not use stdio.h at all. However, this will + also disable HDR writing, because it requires stdio for formatted output. + + Each function returns 0 on failure and non-0 on success. + + The functions create an image file defined by the parameters. The image + is a rectangle of pixels stored from left-to-right, top-to-bottom. + Each pixel contains 'comp' channels of data stored interleaved with 8-bits + per channel, in the following order: 1=Y, 2=YA, 3=RGB, 4=RGBA. (Y is + monochrome color.) The rectangle is 'w' pixels wide and 'h' pixels tall. + The *data pointer points to the first byte of the top-left-most pixel. + For PNG, "stride_in_bytes" is the distance in bytes from the first byte of + a row of pixels to the first byte of the next row of pixels. + + PNG creates output files with the same number of components as the input. + The BMP format expands Y to RGB in the file format and does not + output alpha. + + PNG supports writing rectangles of data even when the bytes storing rows of + data are not consecutive in memory (e.g. sub-rectangles of a larger image), + by supplying the stride between the beginning of adjacent rows. The other + formats do not. (Thus you cannot write a native-format BMP through the BMP + writer, both because it is in BGR order and because it may have padding + at the end of the line.) + + PNG allows you to set the deflate compression level by setting the global + variable 'stbi_write_png_compression_level' (it defaults to 8). + + HDR expects linear float data. Since the format is always 32-bit rgb(e) + data, alpha (if provided) is discarded, and for monochrome data it is + replicated across all three channels. + + TGA supports RLE or non-RLE compressed data. To use non-RLE-compressed + data, set the global variable 'stbi_write_tga_with_rle' to 0. + + JPEG does ignore alpha channels in input data; quality is between 1 and 100. + Higher quality looks better but results in a bigger image. + JPEG baseline (no JPEG progressive). + +CREDITS: + + + Sean Barrett - PNG/BMP/TGA + Baldur Karlsson - HDR + Jean-Sebastien Guay - TGA monochrome + Tim Kelsey - misc enhancements + Alan Hickman - TGA RLE + Emmanuel Julien - initial file IO callback implementation + Jon Olick - original jo_jpeg.cpp code + Daniel Gibson - integrate JPEG, allow external zlib + Aarni Koskela - allow choosing PNG filter + + bugfixes: + github:Chribba + Guillaume Chereau + github:jry2 + github:romigrou + Sergio Gonzalez + Jonas Karlsson + Filip Wasil + Thatcher Ulrich + github:poppolopoppo + Patrick Boettcher + github:xeekworx + Cap Petschulat + Simon Rodriguez + Ivan Tikhonov + github:ignotion + Adam Schackart + +LICENSE + + See end of file for license information. + +*/ + +#ifndef INCLUDE_STB_IMAGE_WRITE_H +#define INCLUDE_STB_IMAGE_WRITE_H + +#include + +// if STB_IMAGE_WRITE_STATIC causes problems, try defining STBIWDEF to 'inline' or 'static inline' +#ifndef STBIWDEF +#ifdef STB_IMAGE_WRITE_STATIC +#define STBIWDEF static +#else +#ifdef __cplusplus +#define STBIWDEF extern "C" +#else +#define STBIWDEF extern +#endif +#endif +#endif + +#ifndef STB_IMAGE_WRITE_STATIC // C++ forbids static forward declarations +extern int stbi_write_tga_with_rle; +extern int stbi_write_png_compression_level; +extern int stbi_write_force_png_filter; +#endif + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_png(char const *filename, int w, int h, int comp, const void *data, int stride_in_bytes); +STBIWDEF int stbi_write_bmp(char const *filename, int w, int h, int comp, const void *data); +STBIWDEF int stbi_write_tga(char const *filename, int w, int h, int comp, const void *data); +STBIWDEF int stbi_write_hdr(char const *filename, int w, int h, int comp, const float *data); +STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const void *data, int quality); + +#ifdef STBI_WINDOWS_UTF8 +STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input); +#endif +#endif + +typedef void stbi_write_func(void *context, void *data, int size); + +STBIWDEF int stbi_write_png_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data, int stride_in_bytes); +STBIWDEF int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); +STBIWDEF int stbi_write_tga_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const void *data); +STBIWDEF int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int w, int h, int comp, const float *data); +STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int quality); + +STBIWDEF void stbi_flip_vertically_on_write(int flip_boolean); + +#endif//INCLUDE_STB_IMAGE_WRITE_H + +#ifdef STB_IMAGE_WRITE_IMPLEMENTATION + +#ifdef _WIN32 + #ifndef _CRT_SECURE_NO_WARNINGS + #define _CRT_SECURE_NO_WARNINGS + #endif + #ifndef _CRT_NONSTDC_NO_DEPRECATE + #define _CRT_NONSTDC_NO_DEPRECATE + #endif +#endif + +#ifndef STBI_WRITE_NO_STDIO +#include +#endif // STBI_WRITE_NO_STDIO + +#include +#include +#include +#include + +#if defined(STBIW_MALLOC) && defined(STBIW_FREE) && (defined(STBIW_REALLOC) || defined(STBIW_REALLOC_SIZED)) +// ok +#elif !defined(STBIW_MALLOC) && !defined(STBIW_FREE) && !defined(STBIW_REALLOC) && !defined(STBIW_REALLOC_SIZED) +// ok +#else +#error "Must define all or none of STBIW_MALLOC, STBIW_FREE, and STBIW_REALLOC (or STBIW_REALLOC_SIZED)." +#endif + +#ifndef STBIW_MALLOC +#define STBIW_MALLOC(sz) malloc(sz) +#define STBIW_REALLOC(p,newsz) realloc(p,newsz) +#define STBIW_FREE(p) free(p) +#endif + +#ifndef STBIW_REALLOC_SIZED +#define STBIW_REALLOC_SIZED(p,oldsz,newsz) STBIW_REALLOC(p,newsz) +#endif + + +#ifndef STBIW_MEMMOVE +#define STBIW_MEMMOVE(a,b,sz) memmove(a,b,sz) +#endif + + +#ifndef STBIW_ASSERT +#include +#define STBIW_ASSERT(x) +#endif + +#define STBIW_UCHAR(x) (unsigned char) ((x) & 0xff) + +#ifdef STB_IMAGE_WRITE_STATIC +static int stbi__flip_vertically_on_write=0; +static int stbi_write_png_compression_level = 8; +static int stbi_write_tga_with_rle = 1; +static int stbi_write_force_png_filter = -1; +#else +int stbi_write_png_compression_level = 8; +int stbi__flip_vertically_on_write=0; +int stbi_write_tga_with_rle = 1; +int stbi_write_force_png_filter = -1; +#endif + +STBIWDEF void stbi_flip_vertically_on_write(int flag) +{ + stbi__flip_vertically_on_write = flag; +} + +typedef struct +{ + stbi_write_func *func; + void *context; +} stbi__write_context; + +// initialize a callback-based context +static void stbi__start_write_callbacks(stbi__write_context *s, stbi_write_func *c, void *context) +{ + s->func = c; + s->context = context; +} + +#ifndef STBI_WRITE_NO_STDIO + +static void stbi__stdio_write(void *context, void *data, int size) +{ + fwrite(data,1,size,(FILE*) context); +} + +#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) +#ifdef __cplusplus +#define STBIW_EXTERN extern "C" +#else +#define STBIW_EXTERN extern +#endif +STBIW_EXTERN __declspec(dllimport) int __stdcall MultiByteToWideChar(unsigned int cp, unsigned long flags, const char *str, int cbmb, wchar_t *widestr, int cchwide); +STBIW_EXTERN __declspec(dllimport) int __stdcall WideCharToMultiByte(unsigned int cp, unsigned long flags, const wchar_t *widestr, int cchwide, char *str, int cbmb, const char *defchar, int *used_default); + +STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input) +{ + return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, (int) bufferlen, NULL, NULL); +} +#endif + +static FILE *stbiw__fopen(char const *filename, char const *mode) +{ + FILE *f; +#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) + wchar_t wMode[64]; + wchar_t wFilename[1024]; + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, filename, -1, wFilename, sizeof(wFilename))) + return 0; + + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, mode, -1, wMode, sizeof(wMode))) + return 0; + +#if _MSC_VER >= 1400 + if (0 != _wfopen_s(&f, wFilename, wMode)) + f = 0; +#else + f = _wfopen(wFilename, wMode); +#endif + +#elif defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != fopen_s(&f, filename, mode)) + f=0; +#else + f = fopen(filename, mode); +#endif + return f; +} + +static int stbi__start_write_file(stbi__write_context *s, const char *filename) +{ + FILE *f = stbiw__fopen(filename, "wb"); + stbi__start_write_callbacks(s, stbi__stdio_write, (void *) f); + return f != NULL; +} + +static void stbi__end_write_file(stbi__write_context *s) +{ + fclose((FILE *)s->context); +} + +#endif // !STBI_WRITE_NO_STDIO + +typedef unsigned int stbiw_uint32; +typedef int stb_image_write_test[sizeof(stbiw_uint32)==4 ? 1 : -1]; + +static void stbiw__writefv(stbi__write_context *s, const char *fmt, va_list v) +{ + while (*fmt) { + switch (*fmt++) { + case ' ': break; + case '1': { unsigned char x = STBIW_UCHAR(va_arg(v, int)); + s->func(s->context,&x,1); + break; } + case '2': { int x = va_arg(v,int); + unsigned char b[2]; + b[0] = STBIW_UCHAR(x); + b[1] = STBIW_UCHAR(x>>8); + s->func(s->context,b,2); + break; } + case '4': { stbiw_uint32 x = va_arg(v,int); + unsigned char b[4]; + b[0]=STBIW_UCHAR(x); + b[1]=STBIW_UCHAR(x>>8); + b[2]=STBIW_UCHAR(x>>16); + b[3]=STBIW_UCHAR(x>>24); + s->func(s->context,b,4); + break; } + default: + STBIW_ASSERT(0); + return; + } + } +} + +static void stbiw__writef(stbi__write_context *s, const char *fmt, ...) +{ + va_list v; + va_start(v, fmt); + stbiw__writefv(s, fmt, v); + va_end(v); +} + +static void stbiw__putc(stbi__write_context *s, unsigned char c) +{ + s->func(s->context, &c, 1); +} + +static void stbiw__write3(stbi__write_context *s, unsigned char a, unsigned char b, unsigned char c) +{ + unsigned char arr[3]; + arr[0] = a; arr[1] = b; arr[2] = c; + s->func(s->context, arr, 3); +} + +static void stbiw__write_pixel(stbi__write_context *s, int rgb_dir, int comp, int write_alpha, int expand_mono, unsigned char *d) +{ + unsigned char bg[3] = { 255, 0, 255}, px[3]; + int k; + + if (write_alpha < 0) + s->func(s->context, &d[comp - 1], 1); + + switch (comp) { + case 2: // 2 pixels = mono + alpha, alpha is written separately, so same as 1-channel case + case 1: + if (expand_mono) + stbiw__write3(s, d[0], d[0], d[0]); // monochrome bmp + else + s->func(s->context, d, 1); // monochrome TGA + break; + case 3: + case 4: + if (comp == 4 && !write_alpha) { + // composite against pink background + for (k = 0; k < 3; ++k) + px[k] = bg[k] + ((d[k] - bg[k]) * d[3]) / 255; + stbiw__write3(s, px[1 - rgb_dir], px[1], px[1 + rgb_dir]); + break; + } + /* FALLTHROUGH */ + stbiw__write3(s, d[1 - rgb_dir], d[1], d[1 + rgb_dir]); + break; + } + if (write_alpha > 0) + s->func(s->context, &d[comp - 1], 1); +} + +static void stbiw__write_pixels(stbi__write_context *s, int rgb_dir, int vdir, int x, int y, int comp, void *data, int write_alpha, int scanline_pad, int expand_mono) +{ + stbiw_uint32 zero = 0; + int i,j, j_end; + + if (y <= 0) + return; + + if (stbi__flip_vertically_on_write) + vdir *= -1; + + if (vdir < 0) { + j_end = -1; j = y-1; + } else { + j_end = y; j = 0; + } + + for (; j != j_end; j += vdir) { + for (i=0; i < x; ++i) { + unsigned char *d = (unsigned char *) data + (j*x+i)*comp; + stbiw__write_pixel(s, rgb_dir, comp, write_alpha, expand_mono, d); + } + s->func(s->context, &zero, scanline_pad); + } +} + +static int stbiw__outfile(stbi__write_context *s, int rgb_dir, int vdir, int x, int y, int comp, int expand_mono, void *data, int alpha, int pad, const char *fmt, ...) +{ + if (y < 0 || x < 0) { + return 0; + } else { + va_list v; + va_start(v, fmt); + stbiw__writefv(s, fmt, v); + va_end(v); + stbiw__write_pixels(s,rgb_dir,vdir,x,y,comp,data,alpha,pad, expand_mono); + return 1; + } +} + +static int stbi_write_bmp_core(stbi__write_context *s, int x, int y, int comp, const void *data) +{ + int pad = (-x*3) & 3; + return stbiw__outfile(s,-1,-1,x,y,comp,1,(void *) data,0,pad, + "11 4 22 4" "4 44 22 444444", + 'B', 'M', 14+40+(x*3+pad)*y, 0,0, 14+40, // file header + 40, x,y, 1,24, 0,0,0,0,0,0); // bitmap header +} + +STBIWDEF int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data) +{ + stbi__write_context s; + stbi__start_write_callbacks(&s, func, context); + return stbi_write_bmp_core(&s, x, y, comp, data); +} + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_bmp(char const *filename, int x, int y, int comp, const void *data) +{ + stbi__write_context s; + if (stbi__start_write_file(&s,filename)) { + int r = stbi_write_bmp_core(&s, x, y, comp, data); + stbi__end_write_file(&s); + return r; + } else + return 0; +} +#endif //!STBI_WRITE_NO_STDIO + +static int stbi_write_tga_core(stbi__write_context *s, int x, int y, int comp, void *data) +{ + int has_alpha = (comp == 2 || comp == 4); + int colorbytes = has_alpha ? comp-1 : comp; + int format = colorbytes < 2 ? 3 : 2; // 3 color channels (RGB/RGBA) = 2, 1 color channel (Y/YA) = 3 + + if (y < 0 || x < 0) + return 0; + + if (!stbi_write_tga_with_rle) { + return stbiw__outfile(s, -1, -1, x, y, comp, 0, (void *) data, has_alpha, 0, + "111 221 2222 11", 0, 0, format, 0, 0, 0, 0, 0, x, y, (colorbytes + has_alpha) * 8, has_alpha * 8); + } else { + int i,j,k; + int jend, jdir; + + stbiw__writef(s, "111 221 2222 11", 0,0,format+8, 0,0,0, 0,0,x,y, (colorbytes + has_alpha) * 8, has_alpha * 8); + + if (stbi__flip_vertically_on_write) { + j = 0; + jend = y; + jdir = 1; + } else { + j = y-1; + jend = -1; + jdir = -1; + } + for (; j != jend; j += jdir) { + unsigned char *row = (unsigned char *) data + j * x * comp; + int len; + + for (i = 0; i < x; i += len) { + unsigned char *begin = row + i * comp; + int diff = 1; + len = 1; + + if (i < x - 1) { + ++len; + diff = memcmp(begin, row + (i + 1) * comp, comp); + if (diff) { + const unsigned char *prev = begin; + for (k = i + 2; k < x && len < 128; ++k) { + if (memcmp(prev, row + k * comp, comp)) { + prev += comp; + ++len; + } else { + --len; + break; + } + } + } else { + for (k = i + 2; k < x && len < 128; ++k) { + if (!memcmp(begin, row + k * comp, comp)) { + ++len; + } else { + break; + } + } + } + } + + if (diff) { + unsigned char header = STBIW_UCHAR(len - 1); + s->func(s->context, &header, 1); + for (k = 0; k < len; ++k) { + stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin + k * comp); + } + } else { + unsigned char header = STBIW_UCHAR(len - 129); + s->func(s->context, &header, 1); + stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin); + } + } + } + } + return 1; +} + +STBIWDEF int stbi_write_tga_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data) +{ + stbi__write_context s; + stbi__start_write_callbacks(&s, func, context); + return stbi_write_tga_core(&s, x, y, comp, (void *) data); +} + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_tga(char const *filename, int x, int y, int comp, const void *data) +{ + stbi__write_context s; + if (stbi__start_write_file(&s,filename)) { + int r = stbi_write_tga_core(&s, x, y, comp, (void *) data); + stbi__end_write_file(&s); + return r; + } else + return 0; +} +#endif + +// ************************************************************************************************* +// Radiance RGBE HDR writer +// by Baldur Karlsson + +#define stbiw__max(a, b) ((a) > (b) ? (a) : (b)) + +static void stbiw__linear_to_rgbe(unsigned char *rgbe, float *linear) +{ + int exponent; + float maxcomp = stbiw__max(linear[0], stbiw__max(linear[1], linear[2])); + + if (maxcomp < 1e-32f) { + rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0; + } else { + float normalize = (float) frexp(maxcomp, &exponent) * 256.0f/maxcomp; + + rgbe[0] = (unsigned char)(linear[0] * normalize); + rgbe[1] = (unsigned char)(linear[1] * normalize); + rgbe[2] = (unsigned char)(linear[2] * normalize); + rgbe[3] = (unsigned char)(exponent + 128); + } +} + +static void stbiw__write_run_data(stbi__write_context *s, int length, unsigned char databyte) +{ + unsigned char lengthbyte = STBIW_UCHAR(length+128); + STBIW_ASSERT(length+128 <= 255); + s->func(s->context, &lengthbyte, 1); + s->func(s->context, &databyte, 1); +} + +static void stbiw__write_dump_data(stbi__write_context *s, int length, unsigned char *data) +{ + unsigned char lengthbyte = STBIW_UCHAR(length); + STBIW_ASSERT(length <= 128); // inconsistent with spec but consistent with official code + s->func(s->context, &lengthbyte, 1); + s->func(s->context, data, length); +} + +static void stbiw__write_hdr_scanline(stbi__write_context *s, int width, int ncomp, unsigned char *scratch, float *scanline) +{ + unsigned char scanlineheader[4] = { 2, 2, 0, 0 }; + unsigned char rgbe[4]; + float linear[3]; + int x; + + scanlineheader[2] = (width&0xff00)>>8; + scanlineheader[3] = (width&0x00ff); + + /* skip RLE for images too small or large */ + if (width < 8 || width >= 32768) { + for (x=0; x < width; x++) { + switch (ncomp) { + case 4: /* fallthrough */ + case 3: linear[2] = scanline[x*ncomp + 2]; + linear[1] = scanline[x*ncomp + 1]; + linear[0] = scanline[x*ncomp + 0]; + break; + default: + linear[0] = linear[1] = linear[2] = scanline[x*ncomp + 0]; + break; + } + stbiw__linear_to_rgbe(rgbe, linear); + s->func(s->context, rgbe, 4); + } + } else { + int c,r; + /* encode into scratch buffer */ + for (x=0; x < width; x++) { + switch(ncomp) { + case 4: /* fallthrough */ + case 3: linear[2] = scanline[x*ncomp + 2]; + linear[1] = scanline[x*ncomp + 1]; + linear[0] = scanline[x*ncomp + 0]; + break; + default: + linear[0] = linear[1] = linear[2] = scanline[x*ncomp + 0]; + break; + } + stbiw__linear_to_rgbe(rgbe, linear); + scratch[x + width*0] = rgbe[0]; + scratch[x + width*1] = rgbe[1]; + scratch[x + width*2] = rgbe[2]; + scratch[x + width*3] = rgbe[3]; + } + + s->func(s->context, scanlineheader, 4); + + /* RLE each component separately */ + for (c=0; c < 4; c++) { + unsigned char *comp = &scratch[width*c]; + + x = 0; + while (x < width) { + // find first run + r = x; + while (r+2 < width) { + if (comp[r] == comp[r+1] && comp[r] == comp[r+2]) + break; + ++r; + } + if (r+2 >= width) + r = width; + // dump up to first run + while (x < r) { + int len = r-x; + if (len > 128) len = 128; + stbiw__write_dump_data(s, len, &comp[x]); + x += len; + } + // if there's a run, output it + if (r+2 < width) { // same test as what we break out of in search loop, so only true if we break'd + // find next byte after run + while (r < width && comp[r] == comp[x]) + ++r; + // output run up to r + while (x < r) { + int len = r-x; + if (len > 127) len = 127; + stbiw__write_run_data(s, len, comp[x]); + x += len; + } + } + } + } + } +} + +static int stbi_write_hdr_core(stbi__write_context *s, int x, int y, int comp, float *data) +{ + if (y <= 0 || x <= 0 || data == NULL) + return 0; + else { + // Each component is stored separately. Allocate scratch space for full output scanline. + unsigned char *scratch = (unsigned char *) STBIW_MALLOC(x*4); + int i, len; + char buffer[128]; + char header[] = "#?RADIANCE\n# Written by stb_image_write.h\nFORMAT=32-bit_rle_rgbe\n"; + s->func(s->context, header, sizeof(header)-1); + +#ifdef __STDC_WANT_SECURE_LIB__ + len = sprintf_s(buffer, sizeof(buffer), "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x); +#else + len = sprintf(buffer, "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x); +#endif + s->func(s->context, buffer, len); + + for(i=0; i < y; i++) + stbiw__write_hdr_scanline(s, x, comp, scratch, data + comp*x*(stbi__flip_vertically_on_write ? y-1-i : i)); + STBIW_FREE(scratch); + return 1; + } +} + +STBIWDEF int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const float *data) +{ + stbi__write_context s; + stbi__start_write_callbacks(&s, func, context); + return stbi_write_hdr_core(&s, x, y, comp, (float *) data); +} + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_hdr(char const *filename, int x, int y, int comp, const float *data) +{ + stbi__write_context s; + if (stbi__start_write_file(&s,filename)) { + int r = stbi_write_hdr_core(&s, x, y, comp, (float *) data); + stbi__end_write_file(&s); + return r; + } else + return 0; +} +#endif // STBI_WRITE_NO_STDIO + + +////////////////////////////////////////////////////////////////////////////// +// +// PNG writer +// + +#ifndef STBIW_ZLIB_COMPRESS +// stretchy buffer; stbiw__sbpush() == vector<>::push_back() -- stbiw__sbcount() == vector<>::size() +#define stbiw__sbraw(a) ((int *) (a) - 2) +#define stbiw__sbm(a) stbiw__sbraw(a)[0] +#define stbiw__sbn(a) stbiw__sbraw(a)[1] + +#define stbiw__sbneedgrow(a,n) ((a)==0 || stbiw__sbn(a)+n >= stbiw__sbm(a)) +#define stbiw__sbmaybegrow(a,n) if(stbiw__sbneedgrow(a,(n))) { stbiw__sbgrow(a,n); } +#define stbiw__sbgrow(a,n) stbiw__sbgrowf((void **) &(a), (n), sizeof(*(a))) + +#define stbiw__sbpush(a, v) stbiw__sbmaybegrow(a,1); (a)[stbiw__sbn(a)++] = (v); +#define stbiw__sbcount(a) (a != 0?stbiw__sbn(a):0) +#define stbiw__sbfree(a) if(a) { STBIW_FREE(stbiw__sbraw(a)); } + +static void *stbiw__sbgrowf(void **arr, int increment, int itemsize) +{ + int m = *arr ? 2*stbiw__sbm(*arr)+increment : increment+1; + void *p = STBIW_REALLOC_SIZED(*arr ? stbiw__sbraw(*arr) : 0, *arr ? (stbiw__sbm(*arr)*itemsize + sizeof(int)*2) : 0, itemsize * m + sizeof(int)*2); + STBIW_ASSERT(p); + if (p) { + if (!*arr) ((int *) p)[1] = 0; + *arr = (void *) ((int *) p + 2); + stbiw__sbm(*arr) = m; + } + return *arr; +} + +static unsigned char *stbiw__zlib_flushf(unsigned char *data, unsigned int *bitbuffer, int *bitcount) +{ + while (*bitcount >= 8) { + stbiw__sbpush(data, STBIW_UCHAR(*bitbuffer)); + *bitbuffer >>= 8; + *bitcount -= 8; + } + return data; +} + +static int stbiw__zlib_bitrev(int code, int codebits) +{ + int res=0; + while (codebits--) { + res = (res << 1) | (code & 1); + code >>= 1; + } + return res; +} + +static unsigned int stbiw__zlib_countm(unsigned char *a, unsigned char *b, int limit) +{ + int i; + for (i=0; i < limit && i < 258; ++i) + if (a[i] != b[i]) break; + return i; +} + +static unsigned int stbiw__zhash(unsigned char *data) +{ + stbiw_uint32 hash = data[0] + (data[1] << 8) + (data[2] << 16); + hash ^= hash << 3; + hash += hash >> 5; + hash ^= hash << 4; + hash += hash >> 17; + hash ^= hash << 25; + hash += hash >> 6; + return hash; +} + +#define stbiw__zlib_flush() out = stbiw__zlib_flushf(out, &bitbuf, &bitcount) +#define stbiw__zlib_add(code,codebits) { bitbuf |= (code) << bitcount; bitcount += (codebits); stbiw__zlib_flush(); } +#define stbiw__zlib_huffa(b,c) stbiw__zlib_add(stbiw__zlib_bitrev(b,c),c) +// default huffman tables +#define stbiw__zlib_huff1(n) stbiw__zlib_huffa(0x30 + (n), 8) +#define stbiw__zlib_huff2(n) stbiw__zlib_huffa(0x190 + (n)-144, 9) +#define stbiw__zlib_huff3(n) stbiw__zlib_huffa(0 + (n)-256,7) +#define stbiw__zlib_huff4(n) stbiw__zlib_huffa(0xc0 + (n)-280,8) +#define stbiw__zlib_huff(n) if(n <= 143) stbiw__zlib_huff1(n) else if(n <= 255) stbiw__zlib_huff2(n) else if (n <= 279) stbiw__zlib_huff3(n) else stbiw__zlib_huff4(n); +#define stbiw__zlib_huffb(n) if(n <= 143) stbiw__zlib_huff1(n) else stbiw__zlib_huff2(n); + +#define stbiw__ZHASH 16384 + +#endif // STBIW_ZLIB_COMPRESS + +static unsigned short lengthc[] = { 3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258, 259 }; +static unsigned char lengtheb[] = { 0,0,0,0,0,0,0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0 }; +static unsigned short distc[] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577, 32768 }; +static unsigned char disteb[] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13 }; + +STBIWDEF unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality) +{ +#ifdef STBIW_ZLIB_COMPRESS + // user provided a zlib compress implementation, use that + return STBIW_ZLIB_COMPRESS(data, data_len, out_len, quality); +#else // use builtin + unsigned int bitbuf=0; + int i,j, bitcount=0; + unsigned char *out = NULL; + unsigned char ***hash_table = (unsigned char***) STBIW_MALLOC(stbiw__ZHASH * sizeof(char**)); + if (hash_table == NULL) + return NULL; + if (quality < 5) quality = 5; + + stbiw__sbpush(out, 0x78); // DEFLATE 32K window + stbiw__sbpush(out, 0x5e); // FLEVEL = 1 + stbiw__zlib_add(1,1); // BFINAL = 1 + stbiw__zlib_add(1,2); // BTYPE = 1 -- fixed huffman + + for (i=0; i < stbiw__ZHASH; ++i) + hash_table[i] = NULL; + + i=0; + while (i < data_len-3) { + // hash next 3 bytes of data to be compressed + int h = stbiw__zhash(data+i)&(stbiw__ZHASH-1), best=3; + unsigned char *bestloc = 0; + unsigned char **hlist = hash_table[h]; + int n = stbiw__sbcount(hlist); + for (j=0; j < n; ++j) { + if (hlist[j]-data > i-32768) { // if entry lies within window + int d = stbiw__zlib_countm(hlist[j], data+i, data_len-i); + if (d >= best) { best=d; bestloc=hlist[j]; } + } + } + // when hash table entry is too long, delete half the entries + if (hash_table[h] && stbiw__sbn(hash_table[h]) == 2*quality) { + STBIW_MEMMOVE(hash_table[h], hash_table[h]+quality, sizeof(hash_table[h][0])*quality); + stbiw__sbn(hash_table[h]) = quality; + } + stbiw__sbpush(hash_table[h],data+i); + + if (bestloc) { + // "lazy matching" - check match at *next* byte, and if it's better, do cur byte as literal + h = stbiw__zhash(data+i+1)&(stbiw__ZHASH-1); + hlist = hash_table[h]; + n = stbiw__sbcount(hlist); + for (j=0; j < n; ++j) { + if (hlist[j]-data > i-32767) { + int e = stbiw__zlib_countm(hlist[j], data+i+1, data_len-i-1); + if (e > best) { // if next match is better, bail on current match + bestloc = NULL; + break; + } + } + } + } + + if (bestloc) { + int d = (int) (data+i - bestloc); // distance back + STBIW_ASSERT(d <= 32767 && best <= 258); + for (j=0; best > lengthc[j+1]-1; ++j); + stbiw__zlib_huff(j+257); + if (lengtheb[j]) stbiw__zlib_add(best - lengthc[j], lengtheb[j]); + for (j=0; d > distc[j+1]-1; ++j); + stbiw__zlib_add(stbiw__zlib_bitrev(j,5),5); + if (disteb[j]) stbiw__zlib_add(d - distc[j], disteb[j]); + i += best; + } else { + stbiw__zlib_huffb(data[i]); + ++i; + } + } + // write out final bytes + for (;i < data_len; ++i) + stbiw__zlib_huffb(data[i]); + stbiw__zlib_huff(256); // end of block + // pad with 0 bits to byte boundary + while (bitcount) + stbiw__zlib_add(0,1); + + for (i=0; i < stbiw__ZHASH; ++i) + stbiw__sbfree(hash_table[i]); + STBIW_FREE(hash_table); + + { + // compute adler32 on input + unsigned int s1=1, s2=0; + int blocklen = (int) (data_len % 5552); + j=0; + while (j < data_len) { + for (i=0; i < blocklen; ++i) { s1 += data[j+i]; s2 += s1; } + s1 %= 65521; s2 %= 65521; + j += blocklen; + blocklen = 5552; + } + stbiw__sbpush(out, STBIW_UCHAR(s2 >> 8)); + stbiw__sbpush(out, STBIW_UCHAR(s2)); + stbiw__sbpush(out, STBIW_UCHAR(s1 >> 8)); + stbiw__sbpush(out, STBIW_UCHAR(s1)); + } + *out_len = stbiw__sbn(out); + // make returned pointer freeable + STBIW_MEMMOVE(stbiw__sbraw(out), out, *out_len); + return (unsigned char *) stbiw__sbraw(out); +#endif // STBIW_ZLIB_COMPRESS +} + +static unsigned int crc_table[256] = +{ + 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, + 0x0eDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, + 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, + 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, + 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, + 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, + 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, + 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, + 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, + 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, + 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, + 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, + 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, + 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, + 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, + 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, + 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, + 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, + 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, + 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, + 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, + 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, + 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, + 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, + 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, + 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, + 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, + 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, + 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, + 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, + 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, + 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D +}; + +static unsigned int stbiw__crc32(unsigned char *buffer, int len) +{ +#ifdef STBIW_CRC32 + return STBIW_CRC32(buffer, len); +#else + unsigned int crc = ~0u; + int i; + for (i=0; i < len; ++i) + crc = (crc >> 8) ^ crc_table[buffer[i] ^ (crc & 0xff)]; + return ~crc; +#endif +} + +#define stbiw__wpng4(o,a,b,c,d) (o)[0]=STBIW_UCHAR(a);(o)[1]=STBIW_UCHAR(b);(o)[2]=STBIW_UCHAR(c);(o)[3]=STBIW_UCHAR(d);(o)+=4 +#define stbiw__wp32(data,v) stbiw__wpng4(data, (v)>>24,(v)>>16,(v)>>8,(v)); +#define stbiw__wptag(data,s) stbiw__wpng4(data, s[0],s[1],s[2],s[3]) + +static void stbiw__wpcrc(unsigned char **data, int len) +{ + unsigned int crc = stbiw__crc32(*data - len - 4, len+4); + stbiw__wp32(*data, crc); +} + +static unsigned char stbiw__paeth(int a, int b, int c) +{ + int p = a + b - c, pa = abs(p-a), pb = abs(p-b), pc = abs(p-c); + if (pa <= pb && pa <= pc) return STBIW_UCHAR(a); + if (pb <= pc) return STBIW_UCHAR(b); + return STBIW_UCHAR(c); +} + +// @OPTIMIZE: provide an option that always forces left-predict or paeth predict +static void stbiw__encode_png_line(unsigned char *pixels, int stride_bytes, int width, int height, int y, int n, int filter_type, signed char *line_buffer) +{ + static int mapping[] = { 0,1,2,3,4 }; + static int firstmap[] = { 0,1,0,5,6 }; + int *mymap = (y != 0) ? mapping : firstmap; + int i; + int type = mymap[filter_type]; + unsigned char *z = pixels + stride_bytes * (stbi__flip_vertically_on_write ? height-1-y : y); + int signed_stride = stbi__flip_vertically_on_write ? -stride_bytes : stride_bytes; + + if (type==0) { + memcpy(line_buffer, z, width*n); + return; + } + + // first loop isn't optimized since it's just one pixel + for (i = 0; i < n; ++i) { + switch (type) { + case 1: line_buffer[i] = z[i]; break; + case 2: line_buffer[i] = z[i] - z[i-signed_stride]; break; + case 3: line_buffer[i] = z[i] - (z[i-signed_stride]>>1); break; + case 4: line_buffer[i] = (signed char) (z[i] - stbiw__paeth(0,z[i-signed_stride],0)); break; + case 5: line_buffer[i] = z[i]; break; + case 6: line_buffer[i] = z[i]; break; + } + } + switch (type) { + case 1: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - z[i-n]; break; + case 2: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - z[i-signed_stride]; break; + case 3: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - ((z[i-n] + z[i-signed_stride])>>1); break; + case 4: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - stbiw__paeth(z[i-n], z[i-signed_stride], z[i-signed_stride-n]); break; + case 5: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - (z[i-n]>>1); break; + case 6: for (i=n; i < width*n; ++i) line_buffer[i] = z[i] - stbiw__paeth(z[i-n], 0,0); break; + } +} + +STBIWDEF unsigned char *stbi_write_png_to_mem(const unsigned char *pixels, int stride_bytes, int x, int y, int n, int *out_len) +{ + int force_filter = stbi_write_force_png_filter; + int ctype[5] = { -1, 0, 4, 2, 6 }; + unsigned char sig[8] = { 137,80,78,71,13,10,26,10 }; + unsigned char *out,*o, *filt, *zlib; + signed char *line_buffer; + int j,zlen; + + if (stride_bytes == 0) + stride_bytes = x * n; + + if (force_filter >= 5) { + force_filter = -1; + } + + filt = (unsigned char *) STBIW_MALLOC((x*n+1) * y); if (!filt) return 0; + line_buffer = (signed char *) STBIW_MALLOC(x * n); if (!line_buffer) { STBIW_FREE(filt); return 0; } + for (j=0; j < y; ++j) { + int filter_type; + if (force_filter > -1) { + filter_type = force_filter; + stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, force_filter, line_buffer); + } else { // Estimate the best filter by running through all of them: + int best_filter = 0, best_filter_val = 0x7fffffff, est, i; + for (filter_type = 0; filter_type < 5; filter_type++) { + stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, filter_type, line_buffer); + + // Estimate the entropy of the line using this filter; the less, the better. + est = 0; + for (i = 0; i < x*n; ++i) { + est += abs((signed char) line_buffer[i]); + } + if (est < best_filter_val) { + best_filter_val = est; + best_filter = filter_type; + } + } + if (filter_type != best_filter) { // If the last iteration already got us the best filter, don't redo it + stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, best_filter, line_buffer); + filter_type = best_filter; + } + } + // when we get here, filter_type contains the filter type, and line_buffer contains the data + filt[j*(x*n+1)] = (unsigned char) filter_type; + STBIW_MEMMOVE(filt+j*(x*n+1)+1, line_buffer, x*n); + } + STBIW_FREE(line_buffer); + zlib = stbi_zlib_compress(filt, y*( x*n+1), &zlen, stbi_write_png_compression_level); + STBIW_FREE(filt); + if (!zlib) return 0; + + // each tag requires 12 bytes of overhead + out = (unsigned char *) STBIW_MALLOC(8 + 12+13 + 12+zlen + 12); + if (!out) return 0; + *out_len = 8 + 12+13 + 12+zlen + 12; + + o=out; + STBIW_MEMMOVE(o,sig,8); o+= 8; + stbiw__wp32(o, 13); // header length + stbiw__wptag(o, "IHDR"); + stbiw__wp32(o, x); + stbiw__wp32(o, y); + *o++ = 8; + *o++ = STBIW_UCHAR(ctype[n]); + *o++ = 0; + *o++ = 0; + *o++ = 0; + stbiw__wpcrc(&o,13); + + stbiw__wp32(o, zlen); + stbiw__wptag(o, "IDAT"); + STBIW_MEMMOVE(o, zlib, zlen); + o += zlen; + STBIW_FREE(zlib); + stbiw__wpcrc(&o, zlen); + + stbiw__wp32(o,0); + stbiw__wptag(o, "IEND"); + stbiw__wpcrc(&o,0); + + STBIW_ASSERT(o == out + *out_len); + + return out; +} + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_png(char const *filename, int x, int y, int comp, const void *data, int stride_bytes) +{ + FILE *f; + int len; + unsigned char *png = stbi_write_png_to_mem((const unsigned char *) data, stride_bytes, x, y, comp, &len); + if (png == NULL) return 0; + + f = stbiw__fopen(filename, "wb"); + if (!f) { STBIW_FREE(png); return 0; } + fwrite(png, 1, len, f); + fclose(f); + STBIW_FREE(png); + return 1; +} +#endif + +STBIWDEF int stbi_write_png_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int stride_bytes) +{ + int len; + unsigned char *png = stbi_write_png_to_mem((const unsigned char *) data, stride_bytes, x, y, comp, &len); + if (png == NULL) return 0; + func(context, png, len); + STBIW_FREE(png); + return 1; +} + + +/* *************************************************************************** + * + * JPEG writer + * + * This is based on Jon Olick's jo_jpeg.cpp: + * public domain Simple, Minimalistic JPEG writer - http://www.jonolick.com/code.html + */ + +static const unsigned char stbiw__jpg_ZigZag[] = { 0,1,5,6,14,15,27,28,2,4,7,13,16,26,29,42,3,8,12,17,25,30,41,43,9,11,18, + 24,31,40,44,53,10,19,23,32,39,45,52,54,20,22,33,38,46,51,55,60,21,34,37,47,50,56,59,61,35,36,48,49,57,58,62,63 }; + +static void stbiw__jpg_writeBits(stbi__write_context *s, int *bitBufP, int *bitCntP, const unsigned short *bs) { + int bitBuf = *bitBufP, bitCnt = *bitCntP; + bitCnt += bs[1]; + bitBuf |= bs[0] << (24 - bitCnt); + while(bitCnt >= 8) { + unsigned char c = (bitBuf >> 16) & 255; + stbiw__putc(s, c); + if(c == 255) { + stbiw__putc(s, 0); + } + bitBuf <<= 8; + bitCnt -= 8; + } + *bitBufP = bitBuf; + *bitCntP = bitCnt; +} + +static void stbiw__jpg_DCT(float *d0p, float *d1p, float *d2p, float *d3p, float *d4p, float *d5p, float *d6p, float *d7p) { + float d0 = *d0p, d1 = *d1p, d2 = *d2p, d3 = *d3p, d4 = *d4p, d5 = *d5p, d6 = *d6p, d7 = *d7p; + float z1, z2, z3, z4, z5, z11, z13; + + float tmp0 = d0 + d7; + float tmp7 = d0 - d7; + float tmp1 = d1 + d6; + float tmp6 = d1 - d6; + float tmp2 = d2 + d5; + float tmp5 = d2 - d5; + float tmp3 = d3 + d4; + float tmp4 = d3 - d4; + + // Even part + float tmp10 = tmp0 + tmp3; // phase 2 + float tmp13 = tmp0 - tmp3; + float tmp11 = tmp1 + tmp2; + float tmp12 = tmp1 - tmp2; + + d0 = tmp10 + tmp11; // phase 3 + d4 = tmp10 - tmp11; + + z1 = (tmp12 + tmp13) * 0.707106781f; // c4 + d2 = tmp13 + z1; // phase 5 + d6 = tmp13 - z1; + + // Odd part + tmp10 = tmp4 + tmp5; // phase 2 + tmp11 = tmp5 + tmp6; + tmp12 = tmp6 + tmp7; + + // The rotator is modified from fig 4-8 to avoid extra negations. + z5 = (tmp10 - tmp12) * 0.382683433f; // c6 + z2 = tmp10 * 0.541196100f + z5; // c2-c6 + z4 = tmp12 * 1.306562965f + z5; // c2+c6 + z3 = tmp11 * 0.707106781f; // c4 + + z11 = tmp7 + z3; // phase 5 + z13 = tmp7 - z3; + + *d5p = z13 + z2; // phase 6 + *d3p = z13 - z2; + *d1p = z11 + z4; + *d7p = z11 - z4; + + *d0p = d0; *d2p = d2; *d4p = d4; *d6p = d6; +} + +static void stbiw__jpg_calcBits(int val, unsigned short bits[2]) { + int tmp1 = val < 0 ? -val : val; + val = val < 0 ? val-1 : val; + bits[1] = 1; + while(tmp1 >>= 1) { + ++bits[1]; + } + bits[0] = val & ((1<0)&&(DU[end0pos]==0); --end0pos) { + } + // end0pos = first element in reverse order !=0 + if(end0pos == 0) { + stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB); + return DU[0]; + } + for(i = 1; i <= end0pos; ++i) { + int startpos = i; + int nrzeroes; + unsigned short bits[2]; + for (; DU[i]==0 && i<=end0pos; ++i) { + } + nrzeroes = i-startpos; + if ( nrzeroes >= 16 ) { + int lng = nrzeroes>>4; + int nrmarker; + for (nrmarker=1; nrmarker <= lng; ++nrmarker) + stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes); + nrzeroes &= 15; + } + stbiw__jpg_calcBits(DU[i], bits); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes<<4)+bits[1]]); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits); + } + if(end0pos != 63) { + stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB); + } + return DU[0]; +} + +static const unsigned char std_dc_luminance_nrcodes[] = { 0,0,1,5,1,1,1,1,1,1,0,0,0,0,0,0,0 }; +static const unsigned char std_dc_luminance_values[] = { 0,1,2,3,4,5,6,7,8,9,10,11 }; +static const unsigned char std_ac_luminance_nrcodes[] = { 0,0,2,1,3,3,2,4,3,5,5,4,4,0,0,1,0x7d }; +static const unsigned char std_ac_luminance_values[] = { + 0x01,0x02,0x03,0x00,0x04,0x11,0x05,0x12,0x21,0x31,0x41,0x06,0x13,0x51,0x61,0x07,0x22,0x71,0x14,0x32,0x81,0x91,0xa1,0x08, + 0x23,0x42,0xb1,0xc1,0x15,0x52,0xd1,0xf0,0x24,0x33,0x62,0x72,0x82,0x09,0x0a,0x16,0x17,0x18,0x19,0x1a,0x25,0x26,0x27,0x28, + 0x29,0x2a,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x53,0x54,0x55,0x56,0x57,0x58,0x59, + 0x5a,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x83,0x84,0x85,0x86,0x87,0x88,0x89, + 0x8a,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xb2,0xb3,0xb4,0xb5,0xb6, + 0xb7,0xb8,0xb9,0xba,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xe1,0xe2, + 0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa +}; +static const unsigned char std_dc_chrominance_nrcodes[] = { 0,0,3,1,1,1,1,1,1,1,1,1,0,0,0,0,0 }; +static const unsigned char std_dc_chrominance_values[] = { 0,1,2,3,4,5,6,7,8,9,10,11 }; +static const unsigned char std_ac_chrominance_nrcodes[] = { 0,0,2,1,2,4,4,3,4,7,5,4,4,0,1,2,0x77 }; +static const unsigned char std_ac_chrominance_values[] = { + 0x00,0x01,0x02,0x03,0x11,0x04,0x05,0x21,0x31,0x06,0x12,0x41,0x51,0x07,0x61,0x71,0x13,0x22,0x32,0x81,0x08,0x14,0x42,0x91, + 0xa1,0xb1,0xc1,0x09,0x23,0x33,0x52,0xf0,0x15,0x62,0x72,0xd1,0x0a,0x16,0x24,0x34,0xe1,0x25,0xf1,0x17,0x18,0x19,0x1a,0x26, + 0x27,0x28,0x29,0x2a,0x35,0x36,0x37,0x38,0x39,0x3a,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x53,0x54,0x55,0x56,0x57,0x58, + 0x59,0x5a,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x82,0x83,0x84,0x85,0x86,0x87, + 0x88,0x89,0x8a,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xb2,0xb3,0xb4, + 0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda, + 0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa +}; +// Huffman tables +static const unsigned short YDC_HT[256][2] = { {0,2},{2,3},{3,3},{4,3},{5,3},{6,3},{14,4},{30,5},{62,6},{126,7},{254,8},{510,9} }; +static const unsigned short UVDC_HT[256][2] = { {0,2},{1,2},{2,2},{6,3},{14,4},{30,5},{62,6},{126,7},{254,8},{510,9},{1022,10},{2046,11} }; +static const unsigned short YAC_HT[256][2] = { + {10,4},{0,2},{1,2},{4,3},{11,4},{26,5},{120,7},{248,8},{1014,10},{65410,16},{65411,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {12,4},{27,5},{121,7},{502,9},{2038,11},{65412,16},{65413,16},{65414,16},{65415,16},{65416,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {28,5},{249,8},{1015,10},{4084,12},{65417,16},{65418,16},{65419,16},{65420,16},{65421,16},{65422,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {58,6},{503,9},{4085,12},{65423,16},{65424,16},{65425,16},{65426,16},{65427,16},{65428,16},{65429,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {59,6},{1016,10},{65430,16},{65431,16},{65432,16},{65433,16},{65434,16},{65435,16},{65436,16},{65437,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {122,7},{2039,11},{65438,16},{65439,16},{65440,16},{65441,16},{65442,16},{65443,16},{65444,16},{65445,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {123,7},{4086,12},{65446,16},{65447,16},{65448,16},{65449,16},{65450,16},{65451,16},{65452,16},{65453,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {250,8},{4087,12},{65454,16},{65455,16},{65456,16},{65457,16},{65458,16},{65459,16},{65460,16},{65461,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {504,9},{32704,15},{65462,16},{65463,16},{65464,16},{65465,16},{65466,16},{65467,16},{65468,16},{65469,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {505,9},{65470,16},{65471,16},{65472,16},{65473,16},{65474,16},{65475,16},{65476,16},{65477,16},{65478,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {506,9},{65479,16},{65480,16},{65481,16},{65482,16},{65483,16},{65484,16},{65485,16},{65486,16},{65487,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {1017,10},{65488,16},{65489,16},{65490,16},{65491,16},{65492,16},{65493,16},{65494,16},{65495,16},{65496,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {1018,10},{65497,16},{65498,16},{65499,16},{65500,16},{65501,16},{65502,16},{65503,16},{65504,16},{65505,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {2040,11},{65506,16},{65507,16},{65508,16},{65509,16},{65510,16},{65511,16},{65512,16},{65513,16},{65514,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {65515,16},{65516,16},{65517,16},{65518,16},{65519,16},{65520,16},{65521,16},{65522,16},{65523,16},{65524,16},{0,0},{0,0},{0,0},{0,0},{0,0}, + {2041,11},{65525,16},{65526,16},{65527,16},{65528,16},{65529,16},{65530,16},{65531,16},{65532,16},{65533,16},{65534,16},{0,0},{0,0},{0,0},{0,0},{0,0} +}; +static const unsigned short UVAC_HT[256][2] = { + {0,2},{1,2},{4,3},{10,4},{24,5},{25,5},{56,6},{120,7},{500,9},{1014,10},{4084,12},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {11,4},{57,6},{246,8},{501,9},{2038,11},{4085,12},{65416,16},{65417,16},{65418,16},{65419,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {26,5},{247,8},{1015,10},{4086,12},{32706,15},{65420,16},{65421,16},{65422,16},{65423,16},{65424,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {27,5},{248,8},{1016,10},{4087,12},{65425,16},{65426,16},{65427,16},{65428,16},{65429,16},{65430,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {58,6},{502,9},{65431,16},{65432,16},{65433,16},{65434,16},{65435,16},{65436,16},{65437,16},{65438,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {59,6},{1017,10},{65439,16},{65440,16},{65441,16},{65442,16},{65443,16},{65444,16},{65445,16},{65446,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {121,7},{2039,11},{65447,16},{65448,16},{65449,16},{65450,16},{65451,16},{65452,16},{65453,16},{65454,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {122,7},{2040,11},{65455,16},{65456,16},{65457,16},{65458,16},{65459,16},{65460,16},{65461,16},{65462,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {249,8},{65463,16},{65464,16},{65465,16},{65466,16},{65467,16},{65468,16},{65469,16},{65470,16},{65471,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {503,9},{65472,16},{65473,16},{65474,16},{65475,16},{65476,16},{65477,16},{65478,16},{65479,16},{65480,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {504,9},{65481,16},{65482,16},{65483,16},{65484,16},{65485,16},{65486,16},{65487,16},{65488,16},{65489,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {505,9},{65490,16},{65491,16},{65492,16},{65493,16},{65494,16},{65495,16},{65496,16},{65497,16},{65498,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {506,9},{65499,16},{65500,16},{65501,16},{65502,16},{65503,16},{65504,16},{65505,16},{65506,16},{65507,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {2041,11},{65508,16},{65509,16},{65510,16},{65511,16},{65512,16},{65513,16},{65514,16},{65515,16},{65516,16},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, + {16352,14},{65517,16},{65518,16},{65519,16},{65520,16},{65521,16},{65522,16},{65523,16},{65524,16},{65525,16},{0,0},{0,0},{0,0},{0,0},{0,0}, + {1018,10},{32707,15},{65526,16},{65527,16},{65528,16},{65529,16},{65530,16},{65531,16},{65532,16},{65533,16},{65534,16},{0,0},{0,0},{0,0},{0,0},{0,0} +}; +static const int YQT[] = { 16,11,10,16,24,40,51,61,12,12,14,19,26,58,60,55,14,13,16,24,40,57,69,56,14,17,22,29,51,87,80,62,18,22, + 37,56,68,109,103,77,24,35,55,64,81,104,113,92,49,64,78,87,103,121,120,101,72,92,95,98,112,100,103,99 }; +static const int UVQT[] = { 17,18,24,47,99,99,99,99,18,21,26,66,99,99,99,99,24,26,56,99,99,99,99,99,47,66,99,99,99,99,99,99, + 99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99,99 }; +static const float aasf[] = { 1.0f * 2.828427125f, 1.387039845f * 2.828427125f, 1.306562965f * 2.828427125f, 1.175875602f * 2.828427125f, + 1.0f * 2.828427125f, 0.785694958f * 2.828427125f, 0.541196100f * 2.828427125f, 0.275899379f * 2.828427125f }; + +static const unsigned char head0[] = { 0xFF,0xD8,0xFF,0xE0,0,0x10,'J','F','I','F',0,1,1,0,0,1,0,1,0,0,0xFF,0xDB,0,0x84,0 }; +static const unsigned char head2[] = { 0xFF,0xDA,0,0xC,3,1,0,2,0x11,3,0x11,0,0x3F,0 }; + +static int stbi_write_jpg_core(stbi__write_context *s, int width, int height, int comp, const void* data, int quality) { + // Constants that don't pollute global namespace + + int row, col, i, k; + float fdtbl_Y[64], fdtbl_UV[64]; + unsigned char YTable[64], UVTable[64]; + + if(!data || !width || !height || comp > 4 || comp < 1) { + return 0; + } + + quality = quality ? quality : 90; + quality = quality < 1 ? 1 : quality > 100 ? 100 : quality; + quality = quality < 50 ? 5000 / quality : 200 - quality * 2; + + for(i = 0; i < 64; ++i) { + int uvti, yti = (YQT[i]*quality+50)/100; + YTable[stbiw__jpg_ZigZag[i]] = (unsigned char) (yti < 1 ? 1 : yti > 255 ? 255 : yti); + uvti = (UVQT[i]*quality+50)/100; + UVTable[stbiw__jpg_ZigZag[i]] = (unsigned char) (uvti < 1 ? 1 : uvti > 255 ? 255 : uvti); + } + + for(row = 0, k = 0; row < 8; ++row) { + for(col = 0; col < 8; ++col, ++k) { + fdtbl_Y[k] = 1 / (YTable [stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); + fdtbl_UV[k] = 1 / (UVTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); + } + } + + // Write Headers + { + const unsigned char head1[] = { 0xFF,0xC0,0,0x11,8,(unsigned char)(height>>8),STBIW_UCHAR(height),(unsigned char)(width>>8),STBIW_UCHAR(width), + 3,1,0x11,0,2,0x11,1,3,0x11,1,0xFF,0xC4,0x01,0xA2,0 }; + s->func(s->context, (void*)head0, sizeof(head0)); + s->func(s->context, (void*)YTable, sizeof(YTable)); + stbiw__putc(s, 1); + s->func(s->context, UVTable, sizeof(UVTable)); + s->func(s->context, (void*)head1, sizeof(head1)); + s->func(s->context, (void*)(std_dc_luminance_nrcodes+1), sizeof(std_dc_luminance_nrcodes)-1); + s->func(s->context, (void*)std_dc_luminance_values, sizeof(std_dc_luminance_values)); + stbiw__putc(s, 0x10); // HTYACinfo + s->func(s->context, (void*)(std_ac_luminance_nrcodes+1), sizeof(std_ac_luminance_nrcodes)-1); + s->func(s->context, (void*)std_ac_luminance_values, sizeof(std_ac_luminance_values)); + stbiw__putc(s, 1); // HTUDCinfo + s->func(s->context, (void*)(std_dc_chrominance_nrcodes+1), sizeof(std_dc_chrominance_nrcodes)-1); + s->func(s->context, (void*)std_dc_chrominance_values, sizeof(std_dc_chrominance_values)); + stbiw__putc(s, 0x11); // HTUACinfo + s->func(s->context, (void*)(std_ac_chrominance_nrcodes+1), sizeof(std_ac_chrominance_nrcodes)-1); + s->func(s->context, (void*)std_ac_chrominance_values, sizeof(std_ac_chrominance_values)); + s->func(s->context, (void*)head2, sizeof(head2)); + } + + // Encode 8x8 macroblocks + { + static const unsigned short fillBits[] = {0x7F, 7}; + const unsigned char *imageData = (const unsigned char *)data; + int DCY=0, DCU=0, DCV=0; + int bitBuf=0, bitCnt=0; + // comp == 2 is grey+alpha (alpha is ignored) + int ofsG = comp > 2 ? 1 : 0, ofsB = comp > 2 ? 2 : 0; + int x, y, pos; + for(y = 0; y < height; y += 8) { + for(x = 0; x < width; x += 8) { + float YDU[64], UDU[64], VDU[64]; + for(row = y, pos = 0; row < y+8; ++row) { + // row >= height => use last input row + int clamped_row = (row < height) ? row : height - 1; + int base_p = (stbi__flip_vertically_on_write ? (height-1-clamped_row) : clamped_row)*width*comp; + for(col = x; col < x+8; ++col, ++pos) { + float r, g, b; + // if col >= width => use pixel from last input column + int p = base_p + ((col < width) ? col : (width-1))*comp; + + r = imageData[p+0]; + g = imageData[p+ofsG]; + b = imageData[p+ofsB]; + YDU[pos]=+0.29900f*r+0.58700f*g+0.11400f*b-128; + UDU[pos]=-0.16874f*r-0.33126f*g+0.50000f*b; + VDU[pos]=+0.50000f*r-0.41869f*g-0.08131f*b; + } + } + + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, YDU, fdtbl_Y, DCY, YDC_HT, YAC_HT); + DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, UDU, fdtbl_UV, DCU, UVDC_HT, UVAC_HT); + DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, VDU, fdtbl_UV, DCV, UVDC_HT, UVAC_HT); + } + } + + // Do the bit alignment of the EOI marker + stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits); + } + + // EOI + stbiw__putc(s, 0xFF); + stbiw__putc(s, 0xD9); + + return 1; +} + +STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int quality) +{ + stbi__write_context s; + stbi__start_write_callbacks(&s, func, context); + return stbi_write_jpg_core(&s, x, y, comp, (void *) data, quality); +} + + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const void *data, int quality) +{ + stbi__write_context s; + if (stbi__start_write_file(&s,filename)) { + int r = stbi_write_jpg_core(&s, x, y, comp, data, quality); + stbi__end_write_file(&s); + return r; + } else + return 0; +} +#endif + +#endif // STB_IMAGE_WRITE_IMPLEMENTATION + +/* Revision history + 1.10 (2019-02-07) + support utf8 filenames in Windows; fix warnings and platform ifdefs + 1.09 (2018-02-11) + fix typo in zlib quality API, improve STB_I_W_STATIC in C++ + 1.08 (2018-01-29) + add stbi__flip_vertically_on_write, external zlib, zlib quality, choose PNG filter + 1.07 (2017-07-24) + doc fix + 1.06 (2017-07-23) + writing JPEG (using Jon Olick's code) + 1.05 ??? + 1.04 (2017-03-03) + monochrome BMP expansion + 1.03 ??? + 1.02 (2016-04-02) + avoid allocating large structures on the stack + 1.01 (2016-01-16) + STBIW_REALLOC_SIZED: support allocators with no realloc support + avoid race-condition in crc initialization + minor compile issues + 1.00 (2015-09-14) + installable file IO function + 0.99 (2015-09-13) + warning fixes; TGA rle support + 0.98 (2015-04-08) + added STBIW_MALLOC, STBIW_ASSERT etc + 0.97 (2015-01-18) + fixed HDR asserts, rewrote HDR rle logic + 0.96 (2015-01-17) + add HDR output + fix monochrome BMP + 0.95 (2014-08-17) + add monochrome TGA output + 0.94 (2014-05-31) + rename private functions to avoid conflicts with stb_image.h + 0.93 (2014-05-27) + warning fixes + 0.92 (2010-08-01) + casts to unsigned char to fix warnings + 0.91 (2010-07-17) + first public release + 0.90 first internal release +*/ + +/* +------------------------------------------------------------------------------ +This software is available under 2 licenses -- choose whichever you prefer. +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License +Copyright (c) 2017 Sean Barrett +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +------------------------------------------------------------------------------ +ALTERNATIVE B - Public Domain (www.unlicense.org) +This is free and unencumbered software released into the public domain. +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, +commercial or non-commercial, and by any means. +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to +this software under copyright law. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +------------------------------------------------------------------------------ +*/ diff --git a/src/StbImageWriteSharp/CRuntime.cs b/src/CRuntime.cs similarity index 100% rename from src/StbImageWriteSharp/CRuntime.cs rename to src/CRuntime.cs diff --git a/src/StbImageWriteSharp/ColorComponents.cs b/src/ColorComponents.cs similarity index 100% rename from src/StbImageWriteSharp/ColorComponents.cs rename to src/ColorComponents.cs diff --git a/src/StbImageWriteSharp/ImageWriter.cs b/src/ImageWriter.cs similarity index 98% rename from src/StbImageWriteSharp/ImageWriter.cs rename to src/ImageWriter.cs index 639d7d3..4cd3b86 100644 --- a/src/StbImageWriteSharp/ImageWriter.cs +++ b/src/ImageWriter.cs @@ -151,7 +151,7 @@ public void WritePng(byte[] data, int width, int height, ColorComponents compone fixed (byte* b = &data[0]) { - WritePng(data, width, height, components, dest); + WritePng(b, width, height, components, dest); } } diff --git a/src/StbImageWriteSharp/MemoryStats.cs b/src/MemoryStats.cs similarity index 100% rename from src/StbImageWriteSharp/MemoryStats.cs rename to src/MemoryStats.cs diff --git a/src/StbImageWriteSharp/StbImageWrite.Generated.cs b/src/StbImageWrite.Generated.cs similarity index 100% rename from src/StbImageWriteSharp/StbImageWrite.Generated.cs rename to src/StbImageWrite.Generated.cs diff --git a/src/StbImageWriteSharp/StbImageWrite.cs b/src/StbImageWrite.cs similarity index 100% rename from src/StbImageWriteSharp/StbImageWrite.cs rename to src/StbImageWrite.cs diff --git a/src/StbImageWriteSharp/StbImageWriteSharp.csproj b/src/StbImageWriteSharp.csproj similarity index 100% rename from src/StbImageWriteSharp/StbImageWriteSharp.csproj rename to src/StbImageWriteSharp.csproj diff --git a/tests/Stb.Native/AssemblyInfo.cpp b/tests/Stb.Native/AssemblyInfo.cpp new file mode 100644 index 0000000..c561464 --- /dev/null +++ b/tests/Stb.Native/AssemblyInfo.cpp @@ -0,0 +1,38 @@ +#include "stdafx.h" + +using namespace System; +using namespace System::Reflection; +using namespace System::Runtime::CompilerServices; +using namespace System::Runtime::InteropServices; +using namespace System::Security::Permissions; + +// +// General Information about an assembly is controlled through the following +// set of attributes. Change these attribute values to modify the information +// associated with an assembly. +// +[assembly:AssemblyTitleAttribute(L"StbNative")]; +[assembly:AssemblyDescriptionAttribute(L"")]; +[assembly:AssemblyConfigurationAttribute(L"")]; +[assembly:AssemblyCompanyAttribute(L"")]; +[assembly:AssemblyProductAttribute(L"StbNative")]; +[assembly:AssemblyCopyrightAttribute(L"Copyright (c) 2017")]; +[assembly:AssemblyTrademarkAttribute(L"")]; +[assembly:AssemblyCultureAttribute(L"")]; + +// +// Version information for an assembly consists of the following four values: +// +// Major Version +// Minor Version +// Build Number +// Revision +// +// You can specify all the value or you can default the Revision and Build Numbers +// by using the '*' as shown below: + +[assembly:AssemblyVersionAttribute("1.0.*")]; + +[assembly:ComVisible(false)]; + +[assembly:CLSCompliantAttribute(true)]; \ No newline at end of file diff --git a/tests/Stb.Native/ReadMe.txt b/tests/Stb.Native/ReadMe.txt new file mode 100644 index 0000000..3d11c6a --- /dev/null +++ b/tests/Stb.Native/ReadMe.txt @@ -0,0 +1,38 @@ +======================================================================== + DYNAMIC LINK LIBRARY : Stb.Native Project Overview +======================================================================== + +AppWizard has created this Stb.Native DLL for you. + +This file contains a summary of what you will find in each of the files that +make up your Stb.Native application. + +Stb.Native.vcxproj + This is the main project file for VC++ projects generated using an Application Wizard. + It contains information about the version of Visual C++ that generated the file, and + information about the platforms, configurations, and project features selected with the + Application Wizard. + +Stb.Native.vcxproj.filters + This is the filters file for VC++ projects generated using an Application Wizard. + It contains information about the association between the files in your project + and the filters. This association is used in the IDE to show grouping of files with + similar extensions under a specific node (for e.g. ".cpp" files are associated with the + "Source Files" filter). + +Stb.Native.cpp + This is the main DLL source file. + +Stb.Native.h + This file contains a class declaration. + +AssemblyInfo.cpp + Contains custom attributes for modifying assembly metadata. + +///////////////////////////////////////////////////////////////////////////// +Other notes: + +AppWizard uses "TODO:" to indicate parts of the source code you +should add to or customize. + +///////////////////////////////////////////////////////////////////////////// diff --git a/tests/Stb.Native/Stb.Native.cpp b/tests/Stb.Native/Stb.Native.cpp new file mode 100644 index 0000000..467e397 --- /dev/null +++ b/tests/Stb.Native/Stb.Native.cpp @@ -0,0 +1,6 @@ +// This is the main DLL file. + +#include "stdafx.h" + +#include "Stb.Native.h" + diff --git a/tests/Stb.Native/Stb.Native.h b/tests/Stb.Native/Stb.Native.h new file mode 100644 index 0000000..fa015ae --- /dev/null +++ b/tests/Stb.Native/Stb.Native.h @@ -0,0 +1,137 @@ +// Stb.Native.h + +#pragma once + +using namespace System; +using namespace System::IO; +using namespace System::Collections::Generic; +using namespace System::Runtime::InteropServices; +using namespace System::Threading; + +#include +#include +#include + +#define STBI_WRITE_NO_STDIO +#define STB_IMAGE_WRITE_IMPLEMENTATION +#define STB_IMAGE_WRITE_STATIC +#include "../../generation/StbImageWriteSharp.Generator/stb_image_write.h" + +namespace StbNative { + void write_func(void *context, void *data, int size); + + public ref class Native + { + public: + static Dictionary ^writeInfo = gcnew Dictionary(); + static int _id = 0; + + static int GenerateId() + { + int %trackRefCounter = _id; + return System::Threading::Interlocked::Increment(trackRefCounter); + } + + // TODO: Add your methods for this class here. + static void save_to_stream(array ^bytes, int x, int y, int comp, int type, Stream ^output) + { + Monitor::Enter(writeInfo); + int id; + try { + id = GenerateId(); + + writeInfo->Add(id, output); + } + finally + { + Monitor::Exit(writeInfo); + } + + pin_ptr p = &bytes[0]; + unsigned char *ptr = (unsigned char *)p; + + std::vector ff; + switch (type) + { + case 0: + stbi_write_bmp_to_func(write_func, (void *)id, x, y, comp, ptr); + break; + case 1: + stbi_write_tga_to_func(write_func, (void *)id, x, y, comp, ptr); + break; + case 2: + { + ff.resize(bytes->Length); + for (int i = 0; i < bytes->Length; ++i) + { + ff[i] = (float)(bytes[i] / 255.0f); + } + + stbi_write_hdr_to_func(write_func, (void *)id, x, y, comp, &ff[0]); + break; + } + case 3: + stbi_write_png_to_func(write_func, (void *)id, x, y, comp, ptr, x * comp); + break; + } + + Monitor::Enter(writeInfo); + try { + writeInfo->Remove(id); + } + finally + { + Monitor::Exit(writeInfo); + } + } + + static void save_to_jpg(array ^bytes, int x, int y, int comp, Stream ^output, int quality) + { + Monitor::Enter(writeInfo); + int id; + try { + id = GenerateId(); + writeInfo->Add(id, output); + } + finally + { + Monitor::Exit(writeInfo); + } + + pin_ptr p = &bytes[0]; + unsigned char *ptr = (unsigned char *)p; + + stbi_write_jpg_to_func(write_func, (void *)id, x, y, comp, ptr, quality); + + Monitor::Enter(writeInfo); + try { + writeInfo->Remove(id); + } + finally + { + Monitor::Exit(writeInfo); + } + } + }; + + void write_func(void *context, void *data, int size) + { + Stream ^ info; + Monitor::Enter(Native::writeInfo); + int id = (int)context; + try { + info = Native::writeInfo[id]; + } + finally + { + Monitor::Exit(Native::writeInfo); + } + + unsigned char *bptr = (unsigned char *)data; + for (int i = 0; i < size; ++i) + { + info->WriteByte(*bptr); + ++bptr; + } + } +} diff --git a/tests/Stb.Native/Stb.Native.vcxproj b/tests/Stb.Native/Stb.Native.vcxproj new file mode 100644 index 0000000..0f86591 --- /dev/null +++ b/tests/Stb.Native/Stb.Native.vcxproj @@ -0,0 +1,104 @@ + + + + + Debug + Win32 + + + Release + Win32 + + + + {EA7B8121-942A-437D-85D5-E4D55B94E88A} + v4.5 + ManagedCProj + StbNative + 10.0 + + + + DynamicLibrary + true + v142 + true + Unicode + + + DynamicLibrary + false + v142 + true + Unicode + + + + + + + + + + + + + true + + + false + + + + Level3 + Disabled + WIN32;_DEBUG;%(PreprocessorDefinitions) + Use + + + true + + + + + + Level3 + WIN32;NDEBUG;%(PreprocessorDefinitions) + Use + + + true + + + + + + + + + + + + + + + + + + Create + Create + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/tests/Stb.Native/Stb.Native.vcxproj.filters b/tests/Stb.Native/Stb.Native.vcxproj.filters new file mode 100644 index 0000000..dda992f --- /dev/null +++ b/tests/Stb.Native/Stb.Native.vcxproj.filters @@ -0,0 +1,52 @@ + + + + + {4FC737F1-C7A5-4376-A066-2A32D752A2FF} + cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx + + + {93995380-89BD-4b04-88EB-625FBE52EBFB} + h;hh;hpp;hxx;hm;inl;inc;xsd + + + {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} + rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms + + + + + Header Files + + + Header Files + + + Header Files + + + + + Source Files + + + Source Files + + + Source Files + + + + + + + + Resource Files + + + + + Resource Files + + + \ No newline at end of file diff --git a/tests/Stb.Native/Stdafx.cpp b/tests/Stb.Native/Stdafx.cpp new file mode 100644 index 0000000..8ae1e0e --- /dev/null +++ b/tests/Stb.Native/Stdafx.cpp @@ -0,0 +1,5 @@ +// stdafx.cpp : source file that includes just the standard includes +// Stb.Native.pch will be the pre-compiled header +// stdafx.obj will contain the pre-compiled type information + +#include "stdafx.h" diff --git a/tests/Stb.Native/Stdafx.h b/tests/Stb.Native/Stdafx.h new file mode 100644 index 0000000..3cc4c24 --- /dev/null +++ b/tests/Stb.Native/Stdafx.h @@ -0,0 +1,7 @@ +// stdafx.h : include file for standard system include files, +// or project specific include files that are used frequently, +// but are changed infrequently + +#pragma once + + diff --git a/tests/Stb.Native/app.ico b/tests/Stb.Native/app.ico new file mode 100644 index 0000000000000000000000000000000000000000..d06d92b763b573936ea7ee8f9dde001bcd66128f GIT binary patch literal 11001 zcmZQzU}RutP*4y6(ku)wm>3w!7#J7?1R#73Mh1pBW(J@<15loWVFd>RLmLZ79>ULH zWnj?b1!@2SMg|3jV4&J*LNN6T3@d=@UW&rhD==gL^-fe{V9)@nR{&xMAO_hB20**9 zg9Zi$AYy1}fKWgZ$OPgBh64u<044r|5ySugAQlhBkO+W!@Pl#`@c%yww;aev z);<#WC;@;aJSdb$4o)m=LeYz?g^*fm%ERmhrE_2w0H<|WI&Z*f5l{vs2~5{u3P=K( zB&Bnhz270hUjH2;Kt2sK2aSf=19UAIkdf73TETf0wLAb8G9bVLp}-^~kOW~MaB^~D z`1t+lFzshIQjnswhH2NBjlhq!sd z33H7nSLDt;B=_S*Z^-i}W%pNn@l!{0@q_)A>$l2XR&J1-{*v*43}b@- z|Lc@Jz}@$_;&rt+Lks7iLAjTi>+1h4Q$H}{_Ft=C`?whnv5X=bhrqU%jN5;gRxzdQ zWKi%S8ok+bt;(mLA#DfII(*O)FoOGld!B-lK<;s+r-2|rPgg&ebxsLQpr(rg5IX=d zXs8wh8bD)HqhL^l0B~6A|0w?UA2`fMSBxI!gT;Q}Q0ISIVwgX1`Ja|{gUlYaACk^T z!ymQWgQbhn^f#LSX_*FK>1;Irjpje(GyqE%^rDgN2C?a7FU+1%`?05gSoqMI9&F){ z?w*mtA5@*e0dNd#sslvR(|VY_s8cKoU?(^rF9o5Jqo|Rd$t@FLc7ybj+O`4d8PyLd dtA|7Qk&}jy<9{Ia!`wj*O=&i!q;vx51pvcOoFo7M literal 0 HcmV?d00001 diff --git a/tests/Stb.Native/app.rc b/tests/Stb.Native/app.rc new file mode 100644 index 0000000000000000000000000000000000000000..2b99234262e5d5501f6e14393983ec377f9923ec GIT binary patch literal 2546 zcmds3T}uK%6g>~~6a@Z+NneaY(+K*Y2fqkOE&7lGAxhg4Ov8`r*H`Dvx@xUf__V~b zJ2Q9g+`0G8Id}HsJ&iOhs%WE$K6)7N^)RHYPT2q>+@ix#0ULZQ9&nE?-#+C-wk^u~ zY_)F0UXy*xk*u}xOq~=~vBF)_u1!$d8m$Wu~bUseJiGrCyIC@lCU3qTb@gadhO^bjPpudvZFKGtbVt_$|h^oiCQ{)T;{FQ^OG% zmE*TWi&^YolWoR%ondd@Q)X2V=fZRG@xH0?KC^6YGrq+rFVkL~R*&gNagwv>F?RNh zrzd(rudi5}6h(oxM>VQ6i9&jMmCyN_%A_>%Ty^BEXcXjkex+<+Yg{d-dQ(}6p7?o` zrR>r>&#T)yWe;y-uKHCwjt0jK;@v;<-+kI%+NVWPCWw7iQXwta->*C2yCaM@+lYIRj3Gx{2oGeCk MmzmH_@K { ThreadProc(file); }); + tasksStarted++; + } + + while (true) + { + Thread.Sleep(1000); + + if (tasksStarted == 0) + { + break; + } + } + + return true; + } + + private static void ThreadProc(string f) + { + try + { + var sw = new Stopwatch(); + + if (!f.EndsWith(".bmp") && !f.EndsWith(".jpg") && !f.EndsWith(".png") && + !f.EndsWith(".jpg") && !f.EndsWith(".psd") && !f.EndsWith(".pic") && + !f.EndsWith(".tga")) + { + return; + } + + Log(string.Empty); + Log("{0} -- #{1}: Loading {2} into memory", DateTime.Now.ToLongTimeString(), filesProcessed, f); + var data = File.ReadAllBytes(f); + Log("----------------------------"); + var image = ImageResult.FromMemory(data); + + for (var k = 0; k <= 4; ++k) + { + Log("Saving as {0} with StbSharp", FormatNames[k]); + + if (k < 4) + { + var writer = new ImageWriter(); + WriteDelegate wd = null; + switch (k) + { + case 0: + wd = writer.WriteBmp; + break; + case 1: + wd = writer.WriteTga; + break; + case 2: + wd = writer.WriteHdr; + break; + case 3: + wd = writer.WritePng; + break; + } + + byte[] save; + BeginWatch(sw); + using (var stream = new MemoryStream()) + { + wd(image.Data, image.Width, image.Height, (StbImageWriteSharp.ColorComponents)image.Comp, stream); + save = stream.ToArray(); + } + + var passed = EndWatch(sw); + stbSharpWrite += passed; + Log("Span: {0} ms", passed); + Log("StbSharp Size: {0}", save.Length); + + Log("Saving as {0} with Stb.Native", FormatNames[k]); + BeginWatch(sw); + byte[] save2; + using (var stream = new MemoryStream()) + { + Native.save_to_stream(image.Data, image.Width, image.Height, (int)image.Comp, k, stream); + save2 = stream.ToArray(); + } + + passed = EndWatch(sw); + stbNativeWrite += passed; + + Log("Span: {0} ms", passed); + Log("Stb.Native Size: {0}", save2.Length); + + if (save.Length != save2.Length) + { + throw new Exception(string.Format("Inconsistent output size: StbSharp={0}, Stb.Native={1}", + save.Length, save2.Length)); + } + + for (var i = 0; i < save.Length; ++i) + { + if (save[i] != save2[i]) + { + throw new Exception(string.Format("Inconsistent data: index={0}, StbSharp={1}, Stb.Native={2}", + i, + (int) save[i], + (int) save2[i])); + } + } + } + else + { + for (var qi = 0; qi < JpgQualities.Length; ++qi) + { + var quality = JpgQualities[qi]; + Log("Saving as JPG with StbSharp with quality={0}", quality); + byte[] save; + BeginWatch(sw); + using (var stream = new MemoryStream()) + { + var writer = new ImageWriter(); + writer.WriteJpg(image.Data, image.Width, image.Height, (StbImageWriteSharp.ColorComponents)image.Comp, stream, quality); + save = stream.ToArray(); + } + + var passed = EndWatch(sw); + stbSharpWrite += passed; + + Log("Span: {0} ms", passed); + Log("StbSharp Size: {0}", save.Length); + + Log("Saving as JPG with Stb.Native with quality={0}", quality); + BeginWatch(sw); + byte[] save2; + using (var stream = new MemoryStream()) + { + Native.save_to_jpg(image.Data, image.Width, image.Height, (int)image.Comp, stream, quality); + save2 = stream.ToArray(); + } + + passed = EndWatch(sw); + stbNativeWrite += passed; + + Log("Span: {0} ms", passed); + Log("Stb.Native Size: {0}", save2.Length); + + if (save.Length != save2.Length) + { + throw new Exception(string.Format("Inconsistent output size: StbSharp={0}, Stb.Native={1}", + save.Length, save2.Length)); + } + + for (var i = 0; i < save.Length; ++i) + { + if (save[i] != save2[i]) + { + throw new Exception(string.Format("Inconsistent data: index={0}, StbSharp={1}, Stb.Native={2}", + i, + (int) save[i], + (int) save2[i])); + } + } + } + } + } + + Log("Total StbSharp Write Time: {0} ms", stbSharpWrite); + Log("Total Stb.Native Write Time: {0} ms", stbNativeWrite); + Log("GC Memory: {0}", GC.GetTotalMemory(true)); + Log("Native Allocations: {0}", StbImageWriteSharp.MemoryStats.Allocations); + + ++filesProcessed; + Log(DateTime.Now.ToLongTimeString() + " -- " + " Files processed: " + filesProcessed); + + } + catch (Exception ex) + { + Log("Error: " + ex.Message); + } + finally + { + --tasksStarted; + } + } + + public static int Main(string[] args) + { + try + { + if (args == null || args.Length < 1) + { + Console.WriteLine("Usage: StbImageWriteSharp.Testing "); + return 1; + } + + var start = DateTime.Now; + + var res = RunTests(args[0]); + var passed = DateTime.Now - start; + Log("Span: {0} ms", passed.TotalMilliseconds); + Log(DateTime.Now.ToLongTimeString() + " -- " + (res ? "Success" : "Failure")); + + return res ? 1 : 0; + } + catch (Exception ex) + { + Console.WriteLine(ex); + return 0; + } + } + } +} \ No newline at end of file diff --git a/tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs b/tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs new file mode 100644 index 0000000..6df0829 --- /dev/null +++ b/tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs @@ -0,0 +1,36 @@ +using System.Reflection; +using System.Runtime.CompilerServices; +using System.Runtime.InteropServices; + +// General Information about an assembly is controlled through the following +// set of attributes. Change these attribute values to modify the information +// associated with an assembly. +[assembly: AssemblyTitle("StbImageSharp.Testing")] +[assembly: AssemblyDescription("")] +[assembly: AssemblyConfiguration("")] +[assembly: AssemblyCompany("")] +[assembly: AssemblyProduct("StbImageSharp.Testing")] +[assembly: AssemblyCopyright("Copyright © 2019")] +[assembly: AssemblyTrademark("")] +[assembly: AssemblyCulture("")] + +// Setting ComVisible to false makes the types in this assembly not visible +// to COM components. If you need to access a type in this assembly from +// COM, set the ComVisible attribute to true on that type. +[assembly: ComVisible(false)] + +// The following GUID is for the ID of the typelib if this project is exposed to COM +[assembly: Guid("1cba18d9-3b9b-4f6a-8729-3e88abc98c33")] + +// Version information for an assembly consists of the following four values: +// +// Major Version +// Minor Version +// Build Number +// Revision +// +// You can specify all the values or you can default the Build and Revision Numbers +// by using the '*' as shown below: +// [assembly: AssemblyVersion("1.0.*")] +[assembly: AssemblyVersion("1.0.0.0")] +[assembly: AssemblyFileVersion("1.0.0.0")] diff --git a/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj b/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj new file mode 100644 index 0000000..ca47267 --- /dev/null +++ b/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj @@ -0,0 +1,65 @@ + + + + + Debug + AnyCPU + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6} + Exe + StbImageWriteSharp.Testing + StbImageWriteSharp.Testing + v4.5 + 512 + true + + + AnyCPU + true + full + false + bin\Debug\ + DEBUG;TRACE + prompt + 4 + + + AnyCPU + pdbonly + true + bin\Release\ + TRACE + prompt + 4 + + + + ..\..\packages\StbImageSharp.2.22.4\lib\net45\StbImageSharp.dll + + + + + + + + + + + + + + + + + {ffaf08e6-c453-444a-bc9a-d0e690f65ad0} + StbImageWriteSharp + + + {ea7b8121-942a-437d-85d5-e4d55b94e88a} + Stb.Native + + + + + + + \ No newline at end of file diff --git a/tests/StbImageWriteSharp.Testing/packages.config b/tests/StbImageWriteSharp.Testing/packages.config new file mode 100644 index 0000000..199ab01 --- /dev/null +++ b/tests/StbImageWriteSharp.Testing/packages.config @@ -0,0 +1,4 @@ + + + + \ No newline at end of file From ccd6c8adf2fde13858b01c39b110e06a1e3202bd Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Mon, 10 Aug 2020 14:04:58 +0700 Subject: [PATCH 08/23] Appveyor fixes --- appveyor.yml | 2 +- build_all.bat | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/appveyor.yml b/appveyor.yml index 3d2deaf..ce43ec3 100644 --- a/appveyor.yml +++ b/appveyor.yml @@ -12,7 +12,7 @@ build_script: - cmd: >- build_all.bat artifacts: - - path: src/StbImageWriteSharp/bin/Release/StbImageWriteSharp.$(appveyor_build_version).nupkg + - path: src/bin/Release/StbImageWriteSharp.$(appveyor_build_version).nupkg name: StbImageWriteSharp.nupkg deploy: - provider: NuGet diff --git a/build_all.bat b/build_all.bat index 8431046..3dc77fd 100644 --- a/build_all.bat +++ b/build_all.bat @@ -1,2 +1,2 @@ dotnet --version -dotnet build src\StbImageWriteSharp\StbImageWriteSharp.csproj /p:Configuration=Release --no-incremental +dotnet build src\StbImageWriteSharp.csproj /p:Configuration=Release --no-incremental From 31013c31af7fe9395544144efa9d78df2776e714 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Mon, 10 Aug 2020 14:11:11 +0700 Subject: [PATCH 09/23] +.gitattributes --- .gitattributes | 1 + 1 file changed, 1 insertion(+) create mode 100644 .gitattributes diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000..82cbef2 --- /dev/null +++ b/.gitattributes @@ -0,0 +1 @@ +*.h linguist-vendored \ No newline at end of file From 6a3aa2b95035506d529d1d8df41186b306a23031 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Sun, 16 Aug 2020 17:59:37 +0700 Subject: [PATCH 10/23] Removed unnecessary folder --- build/StbImageWriteSharp.sln | 31 ------------------------------- 1 file changed, 31 deletions(-) delete mode 100644 build/StbImageWriteSharp.sln diff --git a/build/StbImageWriteSharp.sln b/build/StbImageWriteSharp.sln deleted file mode 100644 index 3357690..0000000 --- a/build/StbImageWriteSharp.sln +++ /dev/null @@ -1,31 +0,0 @@ - -Microsoft Visual Studio Solution File, Format Version 12.00 -# Visual Studio 15 -VisualStudioVersion = 15.0.28010.2036 -MinimumVisualStudioVersion = 10.0.40219.1 -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "StbImageWriteSharp", "..\src\StbImageWriteSharp\StbImageWriteSharp.csproj", "{E674856C-C482-4A80-AD30-37C58EA38967}" -EndProject -Global - GlobalSection(SolutionConfigurationPlatforms) = preSolution - Debug|Any CPU = Debug|Any CPU - Debug|x86 = Debug|x86 - Release|Any CPU = Release|Any CPU - Release|x86 = Release|x86 - EndGlobalSection - GlobalSection(ProjectConfigurationPlatforms) = postSolution - {E674856C-C482-4A80-AD30-37C58EA38967}.Debug|Any CPU.ActiveCfg = Debug|Any CPU - {E674856C-C482-4A80-AD30-37C58EA38967}.Debug|Any CPU.Build.0 = Debug|Any CPU - {E674856C-C482-4A80-AD30-37C58EA38967}.Debug|x86.ActiveCfg = Debug|Any CPU - {E674856C-C482-4A80-AD30-37C58EA38967}.Debug|x86.Build.0 = Debug|Any CPU - {E674856C-C482-4A80-AD30-37C58EA38967}.Release|Any CPU.ActiveCfg = Release|Any CPU - {E674856C-C482-4A80-AD30-37C58EA38967}.Release|Any CPU.Build.0 = Release|Any CPU - {E674856C-C482-4A80-AD30-37C58EA38967}.Release|x86.ActiveCfg = Release|Any CPU - {E674856C-C482-4A80-AD30-37C58EA38967}.Release|x86.Build.0 = Release|Any CPU - EndGlobalSection - GlobalSection(SolutionProperties) = preSolution - HideSolutionNode = FALSE - EndGlobalSection - GlobalSection(ExtensibilityGlobals) = postSolution - SolutionGuid = {C9C812E7-F89A-4B6E-8F9D-981D5F8BBAB3} - EndGlobalSection -EndGlobal From c14f96af618175c73c1cbedbf613c6a0d3c996ee Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Sun, 16 Aug 2020 19:08:52 +0700 Subject: [PATCH 11/23] Code cleanup --- src/StbImageWrite.Generated.cs | 2685 +++++++++++++++++--------------- 1 file changed, 1396 insertions(+), 1289 deletions(-) diff --git a/src/StbImageWrite.Generated.cs b/src/StbImageWrite.Generated.cs index b74140d..27a8e82 100644 --- a/src/StbImageWrite.Generated.cs +++ b/src/StbImageWrite.Generated.cs @@ -1,1291 +1,1398 @@ -using System; -using System.Runtime.InteropServices; - namespace StbImageWriteSharp -{ - unsafe partial class StbImageWrite - { - public static int stbi__flip_vertically_on_write = (int)(0); - - public static int stbi_write_png_compression_level = (int)(8); - - public static int stbi_write_force_png_filter = (int)(-1); - - public static ushort[] lengthc = { 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 259 }; - - public static byte[] lengtheb = { 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0 }; - - public static ushort[] distc = { 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577, 32768 }; - - public static byte[] disteb = { 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13 }; - - public static uint[] crc_table = { 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, 0x0eDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D }; - - public static byte[] stbiw__jpg_ZigZag = { 0, 1, 5, 6, 14, 15, 27, 28, 2, 4, 7, 13, 16, 26, 29, 42, 3, 8, 12, 17, 25, 30, 41, 43, 9, 11, 18, 24, 31, 40, 44, 53, 10, 19, 23, 32, 39, 45, 52, 54, 20, 22, 33, 38, 46, 51, 55, 60, 21, 34, 37, 47, 50, 56, 59, 61, 35, 36, 48, 49, 57, 58, 62, 63 }; - - public static byte[] std_dc_luminance_nrcodes = { 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 }; - - public static byte[] std_dc_luminance_values = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; - - public static byte[] std_ac_luminance_nrcodes = { 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d }; - - public static byte[] std_ac_luminance_values = { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa }; - - public static byte[] std_dc_chrominance_nrcodes = { 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 }; - - public static byte[] std_dc_chrominance_values = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; - - public static byte[] std_ac_chrominance_nrcodes = { 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 }; - - public static byte[] std_ac_chrominance_values = { 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa }; - - public static ushort[,] YDC_HT = { { 0, 2 }, { 2, 3 }, { 3, 3 }, { 4, 3 }, { 5, 3 }, { 6, 3 }, { 14, 4 }, { 30, 5 }, { 62, 6 }, { 126, 7 }, { 254, 8 }, { 510, 9 } }; - - public static ushort[,] UVDC_HT = { { 0, 2 }, { 1, 2 }, { 2, 2 }, { 6, 3 }, { 14, 4 }, { 30, 5 }, { 62, 6 }, { 126, 7 }, { 254, 8 }, { 510, 9 }, { 1022, 10 }, { 2046, 11 } }; - - public static ushort[,] YAC_HT = { { 10, 4 }, { 0, 2 }, { 1, 2 }, { 4, 3 }, { 11, 4 }, { 26, 5 }, { 120, 7 }, { 248, 8 }, { 1014, 10 }, { 65410, 16 }, { 65411, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 12, 4 }, { 27, 5 }, { 121, 7 }, { 502, 9 }, { 2038, 11 }, { 65412, 16 }, { 65413, 16 }, { 65414, 16 }, { 65415, 16 }, { 65416, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 28, 5 }, { 249, 8 }, { 1015, 10 }, { 4084, 12 }, { 65417, 16 }, { 65418, 16 }, { 65419, 16 }, { 65420, 16 }, { 65421, 16 }, { 65422, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 58, 6 }, { 503, 9 }, { 4085, 12 }, { 65423, 16 }, { 65424, 16 }, { 65425, 16 }, { 65426, 16 }, { 65427, 16 }, { 65428, 16 }, { 65429, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 59, 6 }, { 1016, 10 }, { 65430, 16 }, { 65431, 16 }, { 65432, 16 }, { 65433, 16 }, { 65434, 16 }, { 65435, 16 }, { 65436, 16 }, { 65437, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 122, 7 }, { 2039, 11 }, { 65438, 16 }, { 65439, 16 }, { 65440, 16 }, { 65441, 16 }, { 65442, 16 }, { 65443, 16 }, { 65444, 16 }, { 65445, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 123, 7 }, { 4086, 12 }, { 65446, 16 }, { 65447, 16 }, { 65448, 16 }, { 65449, 16 }, { 65450, 16 }, { 65451, 16 }, { 65452, 16 }, { 65453, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 250, 8 }, { 4087, 12 }, { 65454, 16 }, { 65455, 16 }, { 65456, 16 }, { 65457, 16 }, { 65458, 16 }, { 65459, 16 }, { 65460, 16 }, { 65461, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 504, 9 }, { 32704, 15 }, { 65462, 16 }, { 65463, 16 }, { 65464, 16 }, { 65465, 16 }, { 65466, 16 }, { 65467, 16 }, { 65468, 16 }, { 65469, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 505, 9 }, { 65470, 16 }, { 65471, 16 }, { 65472, 16 }, { 65473, 16 }, { 65474, 16 }, { 65475, 16 }, { 65476, 16 }, { 65477, 16 }, { 65478, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 506, 9 }, { 65479, 16 }, { 65480, 16 }, { 65481, 16 }, { 65482, 16 }, { 65483, 16 }, { 65484, 16 }, { 65485, 16 }, { 65486, 16 }, { 65487, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 1017, 10 }, { 65488, 16 }, { 65489, 16 }, { 65490, 16 }, { 65491, 16 }, { 65492, 16 }, { 65493, 16 }, { 65494, 16 }, { 65495, 16 }, { 65496, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 1018, 10 }, { 65497, 16 }, { 65498, 16 }, { 65499, 16 }, { 65500, 16 }, { 65501, 16 }, { 65502, 16 }, { 65503, 16 }, { 65504, 16 }, { 65505, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 2040, 11 }, { 65506, 16 }, { 65507, 16 }, { 65508, 16 }, { 65509, 16 }, { 65510, 16 }, { 65511, 16 }, { 65512, 16 }, { 65513, 16 }, { 65514, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 65515, 16 }, { 65516, 16 }, { 65517, 16 }, { 65518, 16 }, { 65519, 16 }, { 65520, 16 }, { 65521, 16 }, { 65522, 16 }, { 65523, 16 }, { 65524, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 2041, 11 }, { 65525, 16 }, { 65526, 16 }, { 65527, 16 }, { 65528, 16 }, { 65529, 16 }, { 65530, 16 }, { 65531, 16 }, { 65532, 16 }, { 65533, 16 }, { 65534, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } }; - - public static ushort[,] UVAC_HT = { { 0, 2 }, { 1, 2 }, { 4, 3 }, { 10, 4 }, { 24, 5 }, { 25, 5 }, { 56, 6 }, { 120, 7 }, { 500, 9 }, { 1014, 10 }, { 4084, 12 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 11, 4 }, { 57, 6 }, { 246, 8 }, { 501, 9 }, { 2038, 11 }, { 4085, 12 }, { 65416, 16 }, { 65417, 16 }, { 65418, 16 }, { 65419, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 26, 5 }, { 247, 8 }, { 1015, 10 }, { 4086, 12 }, { 32706, 15 }, { 65420, 16 }, { 65421, 16 }, { 65422, 16 }, { 65423, 16 }, { 65424, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 27, 5 }, { 248, 8 }, { 1016, 10 }, { 4087, 12 }, { 65425, 16 }, { 65426, 16 }, { 65427, 16 }, { 65428, 16 }, { 65429, 16 }, { 65430, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 58, 6 }, { 502, 9 }, { 65431, 16 }, { 65432, 16 }, { 65433, 16 }, { 65434, 16 }, { 65435, 16 }, { 65436, 16 }, { 65437, 16 }, { 65438, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 59, 6 }, { 1017, 10 }, { 65439, 16 }, { 65440, 16 }, { 65441, 16 }, { 65442, 16 }, { 65443, 16 }, { 65444, 16 }, { 65445, 16 }, { 65446, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 121, 7 }, { 2039, 11 }, { 65447, 16 }, { 65448, 16 }, { 65449, 16 }, { 65450, 16 }, { 65451, 16 }, { 65452, 16 }, { 65453, 16 }, { 65454, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 122, 7 }, { 2040, 11 }, { 65455, 16 }, { 65456, 16 }, { 65457, 16 }, { 65458, 16 }, { 65459, 16 }, { 65460, 16 }, { 65461, 16 }, { 65462, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 249, 8 }, { 65463, 16 }, { 65464, 16 }, { 65465, 16 }, { 65466, 16 }, { 65467, 16 }, { 65468, 16 }, { 65469, 16 }, { 65470, 16 }, { 65471, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 503, 9 }, { 65472, 16 }, { 65473, 16 }, { 65474, 16 }, { 65475, 16 }, { 65476, 16 }, { 65477, 16 }, { 65478, 16 }, { 65479, 16 }, { 65480, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 504, 9 }, { 65481, 16 }, { 65482, 16 }, { 65483, 16 }, { 65484, 16 }, { 65485, 16 }, { 65486, 16 }, { 65487, 16 }, { 65488, 16 }, { 65489, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 505, 9 }, { 65490, 16 }, { 65491, 16 }, { 65492, 16 }, { 65493, 16 }, { 65494, 16 }, { 65495, 16 }, { 65496, 16 }, { 65497, 16 }, { 65498, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 506, 9 }, { 65499, 16 }, { 65500, 16 }, { 65501, 16 }, { 65502, 16 }, { 65503, 16 }, { 65504, 16 }, { 65505, 16 }, { 65506, 16 }, { 65507, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 2041, 11 }, { 65508, 16 }, { 65509, 16 }, { 65510, 16 }, { 65511, 16 }, { 65512, 16 }, { 65513, 16 }, { 65514, 16 }, { 65515, 16 }, { 65516, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 16352, 14 }, { 65517, 16 }, { 65518, 16 }, { 65519, 16 }, { 65520, 16 }, { 65521, 16 }, { 65522, 16 }, { 65523, 16 }, { 65524, 16 }, { 65525, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 1018, 10 }, { 32707, 15 }, { 65526, 16 }, { 65527, 16 }, { 65528, 16 }, { 65529, 16 }, { 65530, 16 }, { 65531, 16 }, { 65532, 16 }, { 65533, 16 }, { 65534, 16 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 } }; - - public static int[] YQT = { 16, 11, 10, 16, 24, 40, 51, 61, 12, 12, 14, 19, 26, 58, 60, 55, 14, 13, 16, 24, 40, 57, 69, 56, 14, 17, 22, 29, 51, 87, 80, 62, 18, 22, 37, 56, 68, 109, 103, 77, 24, 35, 55, 64, 81, 104, 113, 92, 49, 64, 78, 87, 103, 121, 120, 101, 72, 92, 95, 98, 112, 100, 103, 99 }; - - public static int[] UVQT = { 17, 18, 24, 47, 99, 99, 99, 99, 18, 21, 26, 66, 99, 99, 99, 99, 24, 26, 56, 99, 99, 99, 99, 99, 47, 66, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99 }; - - public static float[] aasf = { 1.0f * 2.828427125f, 1.387039845f * 2.828427125f, 1.306562965f * 2.828427125f, 1.175875602f * 2.828427125f, 1.0f * 2.828427125f, 0.785694958f * 2.828427125f, 0.541196100f * 2.828427125f, 0.275899379f * 2.828427125f }; - - public static byte[] head0 = { 0xFF, 0xD8, 0xFF, 0xE0, 0, 0x10, (byte)'J', (byte)'F', (byte)'I', (byte)'F', 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0xFF, 0xDB, 0, 0x84, 0 }; - - public static byte[] head2 = { 0xFF, 0xDA, 0, 0xC, 3, 1, 0, 2, 0x11, 3, 0x11, 0, 0x3F, 0 }; - - public static void stbi_flip_vertically_on_write(int flag) - { - stbi__flip_vertically_on_write = (int)(flag); - } - - public static void stbiw__putc(stbi__write_context s, byte c) - { - s.func(s.context, &c, (int)(1)); - } - - public static void stbiw__write3(stbi__write_context s, byte a, byte b, byte c) - { - byte* arr = stackalloc byte[3]; - arr[0] = (byte)(a); - arr[1] = (byte)(b); - arr[2] = (byte)(c); - s.func(s.context, arr, (int)(3)); - } - - public static void stbiw__write_pixel(stbi__write_context s, int rgb_dir, int comp, int write_alpha, int expand_mono, byte* d) - { - byte* bg = stackalloc byte[3]; - bg[0] = (byte)(255); - bg[1] = (byte)(0); - bg[2] = (byte)(255); - byte* px = stackalloc byte[3]; - int k = 0; - if ((write_alpha) < (0)) - s.func(s.context, &d[comp - 1], (int)(1)); - switch (comp) - { - case 2: - case 1: - if ((expand_mono) != 0) - stbiw__write3(s, (byte)(d[0]), (byte)(d[0]), (byte)(d[0])); - else - s.func(s.context, d, (int)(1)); - break; - case 3: - case 4: - if (((comp) == (4)) && (write_alpha == 0)) - { - for (k = (int)(0); (k) < (3); ++k) - { - px[k] = (byte)(bg[k] + ((d[k] - bg[k]) * d[3]) / 255); - } - stbiw__write3(s, (byte)(px[1 - rgb_dir]), (byte)(px[1]), (byte)(px[1 + rgb_dir])); - break; - } - stbiw__write3(s, (byte)(d[1 - rgb_dir]), (byte)(d[1]), (byte)(d[1 + rgb_dir])); - break; - } - - if ((write_alpha) > (0)) - s.func(s.context, &d[comp - 1], (int)(1)); - } - - public static void stbiw__write_pixels(stbi__write_context s, int rgb_dir, int vdir, int x, int y, int comp, void* data, int write_alpha, int scanline_pad, int expand_mono) - { - uint zero = (uint)(0); - int i = 0; - int j = 0; - int j_end = 0; - if (y <= 0) - return; - if ((stbi__flip_vertically_on_write) != 0) - vdir *= (int)(-1); - if ((vdir) < (0)) - { - j_end = (int)(-1); - j = (int)(y - 1); - } - else - { - j_end = (int)(y); - j = (int)(0); - } - - for (; j != j_end; j += (int)(vdir)) - { - for (i = (int)(0); (i) < (x); ++i) - { - byte* d = (byte*)(data) + (j * x + i) * comp; - stbiw__write_pixel(s, (int)(rgb_dir), (int)(comp), (int)(write_alpha), (int)(expand_mono), d); - } - s.func(s.context, &zero, (int)(scanline_pad)); - } - } - - public static int stbi_write_bmp_core(stbi__write_context s, int x, int y, int comp, void* data) - { - int pad = (int)((-x * 3) & 3); - return (int)(stbiw__outfile(s, (int)(-1), (int)(-1), (int)(x), (int)(y), (int)(comp), (int)(1), data, (int)(0), (int)(pad), "11 4 22 44 44 22 444444", (int)('B'), (int)('M'), (int)(14 + 40 + (x * 3 + pad) * y), (int)(0), (int)(0), (int)(14 + 40), (int)(40), (int)(x), (int)(y), (int)(1), (int)(24), (int)(0), (int)(0), (int)(0), (int)(0), (int)(0), (int)(0))); - } - - public static int stbi_write_tga_core(stbi__write_context s, int x, int y, int comp, void* data) - { - int has_alpha = (((comp) == (2)) || ((comp) == (4))) ? 1 : 0; - int colorbytes = (int)((has_alpha) != 0 ? comp - 1 : comp); - int format = (int)((colorbytes) < (2) ? 3 : 2); - if (((y) < (0)) || ((x) < (0))) - return (int)(0); - if (stbi_write_tga_with_rle == 0) - { - return (int)(stbiw__outfile(s, (int)(-1), (int)(-1), (int)(x), (int)(y), (int)(comp), (int)(0), data, (int)(has_alpha), (int)(0), "111 221 2222 11", (int)(0), (int)(0), (int)(format), (int)(0), (int)(0), (int)(0), (int)(0), (int)(0), (int)(x), (int)(y), (int)((colorbytes + has_alpha) * 8), (int)(has_alpha * 8))); - } - else - { - int i = 0; - int j = 0; - int k = 0; - int jend = 0; - int jdir = 0; - stbiw__writef(s, "111 221 2222 11", (int)(0), (int)(0), (int)(format + 8), (int)(0), (int)(0), (int)(0), (int)(0), (int)(0), (int)(x), (int)(y), (int)((colorbytes + has_alpha) * 8), (int)(has_alpha * 8)); - if ((stbi__flip_vertically_on_write) != 0) - { - j = (int)(0); - jend = (int)(y); - jdir = (int)(1); - } - else - { - j = (int)(y - 1); - jend = (int)(-1); - jdir = (int)(-1); - } - for (; j != jend; j += (int)(jdir)) - { - byte* row = (byte*)(data) + j * x * comp; - int len = 0; - for (i = (int)(0); (i) < (x); i += (int)(len)) - { - byte* begin = row + i * comp; - int diff = (int)(1); - len = (int)(1); - if ((i) < (x - 1)) - { - ++len; - diff = (int)(CRuntime.memcmp(begin, row + (i + 1) * comp, (ulong)(comp))); - if ((diff) != 0) - { - byte* prev = begin; - for (k = (int)(i + 2); ((k) < (x)) && ((len) < (128)); ++k) - { - if ((CRuntime.memcmp(prev, row + k * comp, (ulong)(comp))) != 0) - { - prev += comp; - ++len; - } - else - { - --len; - break; - } - } - } - else - { - for (k = (int)(i + 2); ((k) < (x)) && ((len) < (128)); ++k) - { - if (CRuntime.memcmp(begin, row + k * comp, (ulong)(comp)) == 0) - { - ++len; - } - else - { - break; - } - } - } - } - if ((diff) != 0) - { - byte header = (byte)((len - 1) & 0xff); - s.func(s.context, &header, (int)(1)); - for (k = (int)(0); (k) < (len); ++k) - { - stbiw__write_pixel(s, (int)(-1), (int)(comp), (int)(has_alpha), (int)(0), begin + k * comp); - } - } - else - { - byte header = (byte)((len - 129) & 0xff); - s.func(s.context, &header, (int)(1)); - stbiw__write_pixel(s, (int)(-1), (int)(comp), (int)(has_alpha), (int)(0), begin); - } - } - } - } - - return (int)(1); - } - - public static void stbiw__linear_to_rgbe(byte* rgbe, float* linear) - { - int exponent = 0; - float maxcomp = (float)((linear[0]) > ((linear[1]) > (linear[2]) ? (linear[1]) : (linear[2])) ? (linear[0]) : ((linear[1]) > (linear[2]) ? (linear[1]) : (linear[2]))); - if ((maxcomp) < (1e-32f)) - { - rgbe[0] = (byte)(rgbe[1] = (byte)(rgbe[2] = (byte)(rgbe[3] = (byte)(0)))); - } - else - { - float normalize = (float)((float)(CRuntime.frexp((double)(maxcomp), &exponent)) * 256.0f / maxcomp); - rgbe[0] = ((byte)(linear[0] * normalize)); - rgbe[1] = ((byte)(linear[1] * normalize)); - rgbe[2] = ((byte)(linear[2] * normalize)); - rgbe[3] = ((byte)(exponent + 128)); - } - - } - - public static void stbiw__write_run_data(stbi__write_context s, int length, byte databyte) - { - byte lengthbyte = (byte)((length + 128) & 0xff); - s.func(s.context, &lengthbyte, (int)(1)); - s.func(s.context, &databyte, (int)(1)); - } - - public static void stbiw__write_dump_data(stbi__write_context s, int length, byte* data) - { - byte lengthbyte = (byte)((length) & 0xff); - s.func(s.context, &lengthbyte, (int)(1)); - s.func(s.context, data, (int)(length)); - } - - public static void stbiw__write_hdr_scanline(stbi__write_context s, int width, int ncomp, byte* scratch, float* scanline) - { - byte* scanlineheader = stackalloc byte[4]; - scanlineheader[0] = (byte)(2); - scanlineheader[1] = (byte)(2); - scanlineheader[2] = (byte)(0); - scanlineheader[3] = (byte)(0); - - byte* rgbe = stackalloc byte[4]; - float* linear = stackalloc float[3]; - int x = 0; - scanlineheader[2] = (byte)((width & 0xff00) >> 8); - scanlineheader[3] = (byte)(width & 0x00ff); - if (((width) < (8)) || ((width) >= (32768))) - { - for (x = (int)(0); (x) < (width); x++) - { - switch (ncomp) - { - case 4: - case 3: - linear[2] = (float)(scanline[x * ncomp + 2]); - linear[1] = (float)(scanline[x * ncomp + 1]); - linear[0] = (float)(scanline[x * ncomp + 0]); - break; - default: - linear[0] = (float)(linear[1] = (float)(linear[2] = (float)(scanline[x * ncomp + 0]))); - break; - } - stbiw__linear_to_rgbe(rgbe, linear); - s.func(s.context, rgbe, (int)(4)); - } - } - else - { - int c = 0; - int r = 0; - for (x = (int)(0); (x) < (width); x++) - { - switch (ncomp) - { - case 4: - case 3: - linear[2] = (float)(scanline[x * ncomp + 2]); - linear[1] = (float)(scanline[x * ncomp + 1]); - linear[0] = (float)(scanline[x * ncomp + 0]); - break; - default: - linear[0] = (float)(linear[1] = (float)(linear[2] = (float)(scanline[x * ncomp + 0]))); - break; - } - stbiw__linear_to_rgbe(rgbe, linear); - scratch[x + width * 0] = (byte)(rgbe[0]); - scratch[x + width * 1] = (byte)(rgbe[1]); - scratch[x + width * 2] = (byte)(rgbe[2]); - scratch[x + width * 3] = (byte)(rgbe[3]); - } - s.func(s.context, scanlineheader, (int)(4)); - for (c = (int)(0); (c) < (4); c++) - { - byte* comp = &scratch[width * c]; - x = (int)(0); - while ((x) < (width)) - { - r = (int)(x); - while ((r + 2) < (width)) - { - if (((comp[r]) == (comp[r + 1])) && ((comp[r]) == (comp[r + 2]))) - break; - ++r; - } - if ((r + 2) >= (width)) - r = (int)(width); - while ((x) < (r)) - { - int len = (int)(r - x); - if ((len) > (128)) - len = (int)(128); - stbiw__write_dump_data(s, (int)(len), &comp[x]); - x += (int)(len); - } - if ((r + 2) < (width)) - { - while (((r) < (width)) && ((comp[r]) == (comp[x]))) - { - ++r; - } while ((x) < (r)) - { - int len = (int)(r - x); - if ((len) > (127)) - len = (int)(127); - stbiw__write_run_data(s, (int)(len), (byte)(comp[x])); - x += (int)(len); - } - } - } - } - } - - } - - public static void* stbiw__sbgrowf(void** arr, int increment, int itemsize) - { - int m = (int)(*arr != null ? 2 * ((int*)(*arr) - 2)[0] + increment : increment + 1); - void* p = CRuntime.realloc(*arr != null ? ((int*)(*arr) - 2) : null, (ulong)(itemsize * m + sizeof(int) * 2)); - if ((p) != null) - { - if (*arr == null) - ((int*)(p))[1] = (int)(0); - *arr = (void*)((int*)(p) + 2); - ((int*)(*arr) - 2)[0] = (int)(m); - } - - return *arr; - } - - public static byte* stbiw__zlib_flushf(byte* data, uint* bitbuffer, int* bitcount) - { - while ((*bitcount) >= (8)) - { - if ((((data) == (null)) || ((((int*)(data) - 2)[1] + (1)) >= (((int*)(data) - 2)[0])))) - { - stbiw__sbgrowf((void**)(&(data)), (int)(1), sizeof(byte)); - } -(data)[((int*)(data) - 2)[1]++] = ((byte)((*bitbuffer) & 0xff)); - *bitbuffer >>= 8; - *bitcount -= (int)(8); - } - return data; - } - - public static int stbiw__zlib_bitrev(int code, int codebits) - { - int res = (int)(0); - while ((codebits--) != 0) - { - res = (int)((res << 1) | (code & 1)); - code >>= 1; - } - return (int)(res); - } - - public static uint stbiw__zlib_countm(byte* a, byte* b, int limit) - { - int i = 0; - for (i = (int)(0); ((i) < (limit)) && ((i) < (258)); ++i) - { - if (a[i] != b[i]) - break; - } - return (uint)(i); - } - - public static uint stbiw__zhash(byte* data) - { - uint hash = (uint)(data[0] + (data[1] << 8) + (data[2] << 16)); - hash ^= (uint)(hash << 3); - hash += (uint)(hash >> 5); - hash ^= (uint)(hash << 4); - hash += (uint)(hash >> 17); - hash ^= (uint)(hash << 25); - hash += (uint)(hash >> 6); - return (uint)(hash); - } - - public static byte* stbi_zlib_compress(byte* data, int data_len, int* out_len, int quality) - { - uint bitbuf = (uint)(0); - int i = 0; - int j = 0; - int bitcount = (int)(0); - byte* _out_ = null; - byte*** hash_table = (byte***)(CRuntime.malloc((ulong)(16384 * sizeof(char**)))); - if ((hash_table) == null) - return null; - if ((quality) < (5)) - quality = (int)(5); - if ((((_out_) == (null)) || ((((int*)(_out_) - 2)[1] + (1)) >= (((int*)(_out_) - 2)[0])))) - { - stbiw__sbgrowf((void**)(&(_out_)), (int)(1), sizeof(byte)); - } - - (_out_)[((int*)(_out_) - 2)[1]++] = (byte)(0x78); - if ((((_out_) == (null)) || ((((int*)(_out_) - 2)[1] + (1)) >= (((int*)(_out_) - 2)[0])))) - { - stbiw__sbgrowf((void**)(&(_out_)), (int)(1), sizeof(byte)); - } - - (_out_)[((int*)(_out_) - 2)[1]++] = (byte)(0x5e); - { - bitbuf |= (uint)((1) << bitcount); - bitcount += (int)(1); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - - { - bitbuf |= (uint)((1) << bitcount); - bitcount += (int)(2); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - - for (i = (int)(0); (i) < (16384); ++i) - { - hash_table[i] = null; - } - i = (int)(0); - while ((i) < (data_len - 3)) - { - int h = (int)(stbiw__zhash(data + i) & (16384 - 1)); - int best = (int)(3); - byte* bestloc = null; - byte** hlist = hash_table[h]; - int n = (int)(hlist != null ? ((int*)(hlist) - 2)[1] : 0); - for (j = (int)(0); (j) < (n); ++j) - { - if ((hlist[j] - data) > (i - 32768)) - { - int d = (int)(stbiw__zlib_countm(hlist[j], data + i, (int)(data_len - i))); - if ((d) >= (best)) - { - best = (int)(d); - bestloc = hlist[j]; - } - } - } - if (((hash_table[h]) != null) && ((((int*)(hash_table[h]) - 2)[1]) == (2 * quality))) - { - CRuntime.memmove(hash_table[h], hash_table[h] + quality, (ulong)(sizeof(byte*) * quality)); - ((int*)(hash_table[h]) - 2)[1] = (int)(quality); - } - if ((((hash_table[h]) == (null)) || ((((int*)(hash_table[h]) - 2)[1] + (1)) >= (((int*)(hash_table[h]) - 2)[0])))) - { - stbiw__sbgrowf((void**)(&(hash_table[h])), (int)(1), sizeof(byte*)); - } -(hash_table[h])[((int*)(hash_table[h]) - 2)[1]++] = (data + i); - if ((bestloc) != null) - { - h = (int)(stbiw__zhash(data + i + 1) & (16384 - 1)); - hlist = hash_table[h]; - n = (int)(hlist != null ? ((int*)(hlist) - 2)[1] : 0); - for (j = (int)(0); (j) < (n); ++j) - { - if ((hlist[j] - data) > (i - 32767)) - { - int e = (int)(stbiw__zlib_countm(hlist[j], data + i + 1, (int)(data_len - i - 1))); - if ((e) > (best)) - { - bestloc = null; - break; - } - } - } - } - if ((bestloc) != null) - { - int d = (int)(data + i - bestloc); - for (j = (int)(0); (best) > (lengthc[j + 1] - 1); ++j) - { - } - if (j + 257 <= 143) - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0x30 + (j + 257)), (int)(8))) << bitcount); - bitcount += (int)(8); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - else if (j + 257 <= 255) - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0x190 + (j + 257) - 144), (int)(9))) << bitcount); - bitcount += (int)(9); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - else if (j + 257 <= 279) - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0 + (j + 257) - 256), (int)(7))) << bitcount); - bitcount += (int)(7); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - else - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0xc0 + (j + 257) - 280), (int)(8))) << bitcount); - bitcount += (int)(8); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - if ((lengtheb[j]) != 0) - { - bitbuf |= (uint)((best - lengthc[j]) << bitcount); - bitcount += (int)(lengtheb[j]); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - for (j = (int)(0); (d) > (distc[j + 1] - 1); ++j) - { - } - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(j), (int)(5))) << bitcount); - bitcount += (int)(5); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - if ((disteb[j]) != 0) - { - bitbuf |= (uint)((d - distc[j]) << bitcount); - bitcount += (int)(disteb[j]); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - i += (int)(best); - } - else - { - if (data[i] <= 143) - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0x30 + (data[i])), (int)(8))) << bitcount); - bitcount += (int)(8); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - else - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0x190 + (data[i]) - 144), (int)(9))) << bitcount); - bitcount += (int)(9); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - ++i; - } - } - for (; (i) < (data_len); ++i) - { - if (data[i] <= 143) - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0x30 + (data[i])), (int)(8))) << bitcount); - bitcount += (int)(8); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - else - { - bitbuf |= (uint)((stbiw__zlib_bitrev((int)(0x190 + (data[i]) - 144), (int)(9))) << bitcount); - bitcount += (int)(9); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - } - - bitbuf |= (uint)((stbiw__zlib_bitrev(0, (int)(7))) << bitcount); - bitcount += (int)(7); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - - while ((bitcount) != 0) - { - bitbuf |= (uint)((0) << bitcount); - bitcount += (int)(1); - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); - } - for (i = (int)(0); (i) < (16384); ++i) - { - if ((hash_table[i]) != null) - { - CRuntime.free(((int*)(hash_table[i]) - 2)); - } - } - CRuntime.free(hash_table); - { - uint s1 = (uint)(1); - uint s2 = (uint)(0); - int blocklen = (int)(data_len % 5552); - j = (int)(0); - while ((j) < (data_len)) - { - for (i = (int)(0); (i) < (blocklen); ++i) - { - s1 += (uint)(data[j + i]); - s2 += (uint)(s1); - } - s1 %= (uint)(65521); - s2 %= (uint)(65521); - j += (int)(blocklen); - blocklen = (int)(5552); - } - if ((((_out_) == (null)) || ((((int*)(_out_) - 2)[1] + (1)) >= (((int*)(_out_) - 2)[0])))) - { - stbiw__sbgrowf((void**)(&(_out_)), (int)(1), sizeof(byte)); - } -(_out_)[((int*)(_out_) - 2)[1]++] = ((byte)((s2 >> 8) & 0xff)); - if ((((_out_) == (null)) || ((((int*)(_out_) - 2)[1] + (1)) >= (((int*)(_out_) - 2)[0])))) - { - stbiw__sbgrowf((void**)(&(_out_)), (int)(1), sizeof(byte)); - } -(_out_)[((int*)(_out_) - 2)[1]++] = ((byte)((s2) & 0xff)); - if ((((_out_) == (null)) || ((((int*)(_out_) - 2)[1] + (1)) >= (((int*)(_out_) - 2)[0])))) - { - stbiw__sbgrowf((void**)(&(_out_)), (int)(1), sizeof(byte)); - } -(_out_)[((int*)(_out_) - 2)[1]++] = ((byte)((s1 >> 8) & 0xff)); - if ((((_out_) == (null)) || ((((int*)(_out_) - 2)[1] + (1)) >= (((int*)(_out_) - 2)[0])))) - { - stbiw__sbgrowf((void**)(&(_out_)), (int)(1), sizeof(byte)); - } -(_out_)[((int*)(_out_) - 2)[1]++] = ((byte)((s1) & 0xff)); - } - - *out_len = (int)(((int*)(_out_) - 2)[1]); - CRuntime.memmove(((int*)(_out_) - 2), _out_, (ulong)(*out_len)); - return (byte*)((int*)(_out_) - 2); - } - - public static uint stbiw__crc32(byte* buffer, int len) - { - uint crc = (uint)(~0u); - int i = 0; - for (i = (int)(0); (i) < (len); ++i) - { - crc = (uint)((crc >> 8) ^ crc_table[buffer[i] ^ (crc & 0xff)]); - } - return (uint)(~crc); - } - - public static void stbiw__wpcrc(byte** data, int len) - { - uint crc = (uint)(stbiw__crc32(*data - len - 4, (int)(len + 4))); - (*data)[0] = ((byte)(((crc) >> 24) & 0xff)); - (*data)[1] = ((byte)(((crc) >> 16) & 0xff)); - (*data)[2] = ((byte)(((crc) >> 8) & 0xff)); - (*data)[3] = ((byte)((crc) & 0xff)); - (*data) += 4; - } - - public static byte stbiw__paeth(int a, int b, int c) - { - int p = (int)(a + b - c); - int pa = (int)(CRuntime.abs((int)(p - a))); - int pb = (int)(CRuntime.abs((int)(p - b))); - int pc = (int)(CRuntime.abs((int)(p - c))); - if ((pa <= pb) && (pa <= pc)) - return (byte)((a) & 0xff); - if (pb <= pc) - return (byte)((b) & 0xff); - return (byte)((c) & 0xff); - } - - public static void stbiw__encode_png_line(byte* pixels, int stride_bytes, int width, int height, int y, int n, int filter_type, sbyte* line_buffer) - { - int* mapping = stackalloc int[5]; - mapping[0] = (int)(0); - mapping[1] = (int)(1); - mapping[2] = (int)(2); - mapping[3] = (int)(3); - mapping[4] = (int)(4); - - int* firstmap = stackalloc int[5]; - firstmap[0] = (int)(0); - firstmap[1] = (int)(1); - firstmap[2] = (int)(0); - firstmap[3] = (int)(5); - firstmap[4] = (int)(6); - - int* mymap = (y != 0) ? mapping : firstmap; - int i = 0; - int type = (int)(mymap[filter_type]); - byte* z = pixels + stride_bytes * ((stbi__flip_vertically_on_write) != 0 ? height - 1 - y : y); - int signed_stride = (int)((stbi__flip_vertically_on_write) != 0 ? -stride_bytes : stride_bytes); - if ((type) == (0)) - { - CRuntime.memcpy(line_buffer, z, (ulong)(width * n)); - return; - } - - for (i = (int)(0); (i) < (n); ++i) - { - switch (type) - { - case 1: - line_buffer[i] = (sbyte)(z[i]); - break; - case 2: - line_buffer[i] = (sbyte)(z[i] - z[i - signed_stride]); - break; - case 3: - line_buffer[i] = (sbyte)(z[i] - (z[i - signed_stride] >> 1)); - break; - case 4: - line_buffer[i] = ((sbyte)(z[i] - stbiw__paeth((int)(0), (int)(z[i - signed_stride]), (int)(0)))); - break; - case 5: - line_buffer[i] = (sbyte)(z[i]); - break; - case 6: - line_buffer[i] = (sbyte)(z[i]); - break; - } - } - switch (type) - { - case 1: - for (i = (int)(n); (i) < (width * n); ++i) - { - line_buffer[i] = (sbyte)(z[i] - z[i - n]); - } - break; - case 2: - for (i = (int)(n); (i) < (width * n); ++i) - { - line_buffer[i] = (sbyte)(z[i] - z[i - signed_stride]); - } - break; - case 3: - for (i = (int)(n); (i) < (width * n); ++i) - { - line_buffer[i] = (sbyte)(z[i] - ((z[i - n] + z[i - signed_stride]) >> 1)); - } - break; - case 4: - for (i = (int)(n); (i) < (width * n); ++i) - { - line_buffer[i] = (sbyte)(z[i] - stbiw__paeth((int)(z[i - n]), (int)(z[i - signed_stride]), (int)(z[i - signed_stride - n]))); - } - break; - case 5: - for (i = (int)(n); (i) < (width * n); ++i) - { - line_buffer[i] = (sbyte)(z[i] - (z[i - n] >> 1)); - } - break; - case 6: - for (i = (int)(n); (i) < (width * n); ++i) - { - line_buffer[i] = (sbyte)(z[i] - stbiw__paeth((int)(z[i - n]), (int)(0), (int)(0))); - } - break; - } - - } - - public static byte* stbi_write_png_to_mem(byte* pixels, int stride_bytes, int x, int y, int n, int* out_len) - { - int force_filter = (int)(stbi_write_force_png_filter); - int* ctype = stackalloc int[5]; - ctype[0] = (int)(-1); - ctype[1] = (int)(0); - ctype[2] = (int)(4); - ctype[3] = (int)(2); - ctype[4] = (int)(6); - - byte* sig = stackalloc byte[8]; - sig[0] = (byte)(137); - sig[1] = (byte)(80); - sig[2] = (byte)(78); - sig[3] = (byte)(71); - sig[4] = (byte)(13); - sig[5] = (byte)(10); - sig[6] = (byte)(26); - sig[7] = (byte)(10); - - byte* _out_; - byte* o; - byte* filt; - byte* zlib; - sbyte* line_buffer; - int j = 0; - int zlen = 0; - if ((stride_bytes) == (0)) - stride_bytes = (int)(x * n); - if ((force_filter) >= (5)) - { - force_filter = (int)(-1); - } - - filt = (byte*)(CRuntime.malloc((ulong)((x * n + 1) * y))); - if (filt == null) - return null; - line_buffer = (sbyte*)(CRuntime.malloc((ulong)(x * n))); - if (line_buffer == null) - { - CRuntime.free(filt); - return null; - } - - for (j = (int)(0); (j) < (y); ++j) - { - int filter_type = 0; - if ((force_filter) > (-1)) - { - filter_type = (int)(force_filter); - stbiw__encode_png_line((pixels), (int)(stride_bytes), (int)(x), (int)(y), (int)(j), (int)(n), (int)(force_filter), line_buffer); - } - else - { - int best_filter = (int)(0); - int best_filter_val = (int)(0x7fffffff); - int est = 0; - int i = 0; - for (filter_type = (int)(0); (filter_type) < (5); filter_type++) - { - stbiw__encode_png_line((pixels), (int)(stride_bytes), (int)(x), (int)(y), (int)(j), (int)(n), (int)(filter_type), line_buffer); - est = (int)(0); - for (i = (int)(0); (i) < (x * n); ++i) - { - est += (int)(CRuntime.abs((int)(line_buffer[i]))); - } - if ((est) < (best_filter_val)) - { - best_filter_val = (int)(est); - best_filter = (int)(filter_type); - } - } - if (filter_type != best_filter) - { - stbiw__encode_png_line((pixels), (int)(stride_bytes), (int)(x), (int)(y), (int)(j), (int)(n), (int)(best_filter), line_buffer); - filter_type = (int)(best_filter); - } - } - filt[j * (x * n + 1)] = ((byte)(filter_type)); - CRuntime.memmove(filt + j * (x * n + 1) + 1, line_buffer, (ulong)(x * n)); - } - CRuntime.free(line_buffer); - zlib = stbi_zlib_compress(filt, (int)(y * (x * n + 1)), &zlen, (int)(stbi_write_png_compression_level)); - CRuntime.free(filt); - if (zlib == null) - return null; - _out_ = (byte*)(CRuntime.malloc((ulong)(8 + 12 + 13 + 12 + zlen + 12))); - if (_out_ == null) - return null; - *out_len = (int)(8 + 12 + 13 + 12 + zlen + 12); - o = _out_; - CRuntime.memmove(o, sig, (ulong)(8)); - o += 8; - (o)[0] = ((byte)(((13) >> 24) & 0xff)); - (o)[1] = ((byte)(((13) >> 16) & 0xff)); - (o)[2] = ((byte)(((13) >> 8) & 0xff)); - (o)[3] = ((byte)((13) & 0xff)); - (o) += 4; - (o)[0] = ((byte)(("IHDR"[0]) & 0xff)); - (o)[1] = ((byte)(("IHDR"[1]) & 0xff)); - (o)[2] = ((byte)(("IHDR"[2]) & 0xff)); - (o)[3] = ((byte)(("IHDR"[3]) & 0xff)); - (o) += 4; - (o)[0] = ((byte)(((x) >> 24) & 0xff)); - (o)[1] = ((byte)(((x) >> 16) & 0xff)); - (o)[2] = ((byte)(((x) >> 8) & 0xff)); - (o)[3] = ((byte)((x) & 0xff)); - (o) += 4; - (o)[0] = ((byte)(((y) >> 24) & 0xff)); - (o)[1] = ((byte)(((y) >> 16) & 0xff)); - (o)[2] = ((byte)(((y) >> 8) & 0xff)); - (o)[3] = ((byte)((y) & 0xff)); - (o) += 4; - *o++ = (byte)(8); - *o++ = ((byte)((ctype[n]) & 0xff)); - *o++ = (byte)(0); - *o++ = (byte)(0); - *o++ = (byte)(0); - stbiw__wpcrc(&o, (int)(13)); - (o)[0] = ((byte)(((zlen) >> 24) & 0xff)); - (o)[1] = ((byte)(((zlen) >> 16) & 0xff)); - (o)[2] = ((byte)(((zlen) >> 8) & 0xff)); - (o)[3] = ((byte)((zlen) & 0xff)); - (o) += 4; - (o)[0] = ((byte)(("IDAT"[0]) & 0xff)); - (o)[1] = ((byte)(("IDAT"[1]) & 0xff)); - (o)[2] = ((byte)(("IDAT"[2]) & 0xff)); - (o)[3] = ((byte)(("IDAT"[3]) & 0xff)); - (o) += 4; - CRuntime.memmove(o, zlib, (ulong)(zlen)); - o += zlen; - CRuntime.free(zlib); - stbiw__wpcrc(&o, (int)(zlen)); - (o)[0] = ((byte)(((0) >> 24) & 0xff)); - (o)[1] = ((byte)(((0) >> 16) & 0xff)); - (o)[2] = ((byte)(((0) >> 8) & 0xff)); - (o)[3] = ((byte)((0) & 0xff)); - (o) += 4; - (o)[0] = ((byte)(("IEND"[0]) & 0xff)); - (o)[1] = ((byte)(("IEND"[1]) & 0xff)); - (o)[2] = ((byte)(("IEND"[2]) & 0xff)); - (o)[3] = ((byte)(("IEND"[3]) & 0xff)); - (o) += 4; - stbiw__wpcrc(&o, (int)(0)); - return _out_; - } - - public static void stbiw__jpg_writeBits(stbi__write_context s, int* bitBufP, int* bitCntP, ushort bs0, ushort bs1) - { - int bitBuf = (int)(*bitBufP); - int bitCnt = (int)(*bitCntP); - bitCnt += (int)(bs1); - bitBuf |= (int)(bs0 << (24 - bitCnt)); - while ((bitCnt) >= (8)) - { - byte c = (byte)((bitBuf >> 16) & 255); - stbiw__putc(s, (byte)(c)); - if ((c) == (255)) - { - stbiw__putc(s, (byte)(0)); - } - bitBuf <<= 8; - bitCnt -= (int)(8); - } - *bitBufP = (int)(bitBuf); - *bitCntP = (int)(bitCnt); - } - - public static void stbiw__jpg_DCT(float* d0p, float* d1p, float* d2p, float* d3p, float* d4p, float* d5p, float* d6p, float* d7p) - { - float d0 = (float)(*d0p); - float d1 = (float)(*d1p); - float d2 = (float)(*d2p); - float d3 = (float)(*d3p); - float d4 = (float)(*d4p); - float d5 = (float)(*d5p); - float d6 = (float)(*d6p); - float d7 = (float)(*d7p); - float z1 = 0; - float z2 = 0; - float z3 = 0; - float z4 = 0; - float z5 = 0; - float z11 = 0; - float z13 = 0; - float tmp0 = (float)(d0 + d7); - float tmp7 = (float)(d0 - d7); - float tmp1 = (float)(d1 + d6); - float tmp6 = (float)(d1 - d6); - float tmp2 = (float)(d2 + d5); - float tmp5 = (float)(d2 - d5); - float tmp3 = (float)(d3 + d4); - float tmp4 = (float)(d3 - d4); - float tmp10 = (float)(tmp0 + tmp3); - float tmp13 = (float)(tmp0 - tmp3); - float tmp11 = (float)(tmp1 + tmp2); - float tmp12 = (float)(tmp1 - tmp2); - d0 = (float)(tmp10 + tmp11); - d4 = (float)(tmp10 - tmp11); - z1 = (float)((tmp12 + tmp13) * 0.707106781f); - d2 = (float)(tmp13 + z1); - d6 = (float)(tmp13 - z1); - tmp10 = (float)(tmp4 + tmp5); - tmp11 = (float)(tmp5 + tmp6); - tmp12 = (float)(tmp6 + tmp7); - z5 = (float)((tmp10 - tmp12) * 0.382683433f); - z2 = (float)(tmp10 * 0.541196100f + z5); - z4 = (float)(tmp12 * 1.306562965f + z5); - z3 = (float)(tmp11 * 0.707106781f); - z11 = (float)(tmp7 + z3); - z13 = (float)(tmp7 - z3); - *d5p = (float)(z13 + z2); - *d3p = (float)(z13 - z2); - *d1p = (float)(z11 + z4); - *d7p = (float)(z11 - z4); - *d0p = (float)(d0); - *d2p = (float)(d2); - *d4p = (float)(d4); - *d6p = (float)(d6); - } - - public static void stbiw__jpg_calcBits(int val, ushort* bits) - { - int tmp1 = (int)((val) < (0) ? -val : val); - val = (int)((val) < (0) ? val - 1 : val); - bits[1] = (ushort)(1); - while ((tmp1 >>= 1) != 0) - { - ++bits[1]; - } - bits[0] = (ushort)(val & ((1 << bits[1]) - 1)); - } - - public static int stbiw__jpg_processDU(stbi__write_context s, int* bitBuf, int* bitCnt, float* CDU, float* fdtbl, int DC, ushort[,] HTDC, ushort[,] HTAC) - { - ushort* EOB = stackalloc ushort[2]; - EOB[0] = (ushort)(HTAC[0x00, 0]); - EOB[1] = (ushort)(HTAC[0x00, 1]); - - ushort* M16zeroes = stackalloc ushort[2]; - M16zeroes[0] = (ushort)(HTAC[0xF0, 0]); - M16zeroes[1] = (ushort)(HTAC[0xF0, 1]); - - int dataOff = 0; - int i = 0; - int diff = 0; - int end0pos = 0; - int* DU = stackalloc int[64]; - for (dataOff = (int)(0); (dataOff) < (64); dataOff += (int)(8)) - { - stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + 1], &CDU[dataOff + 2], &CDU[dataOff + 3], &CDU[dataOff + 4], &CDU[dataOff + 5], &CDU[dataOff + 6], &CDU[dataOff + 7]); - } - for (dataOff = (int)(0); (dataOff) < (8); ++dataOff) - { - stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + 8], &CDU[dataOff + 16], &CDU[dataOff + 24], &CDU[dataOff + 32], &CDU[dataOff + 40], &CDU[dataOff + 48], &CDU[dataOff + 56]); - } - for (i = (int)(0); (i) < (64); ++i) - { - float v = (float)(CDU[i] * fdtbl[i]); - DU[stbiw__jpg_ZigZag[i]] = ((int)((v) < (0) ? v - 0.5f : v + 0.5f)); - } - diff = (int)(DU[0] - DC); - if ((diff) == (0)) - { - stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTDC[0, 0], HTDC[0, 1]); - } - else - { - ushort* bits = stackalloc ushort[2]; - stbiw__jpg_calcBits((int)(diff), bits); - stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTDC[bits[1], 0], HTDC[bits[1], 1]); - stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]); - } - - end0pos = (int)(63); - for (; ((end0pos) > (0)) && ((DU[end0pos]) == (0)); --end0pos) - { - } - if ((end0pos) == (0)) - { - stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB[0], EOB[1]); - return (int)(DU[0]); - } - - for (i = (int)(1); i <= end0pos; ++i) - { - int startpos = (int)(i); - int nrzeroes = 0; - ushort* bits = stackalloc ushort[2]; - for (; ((DU[i]) == (0)) && (i <= end0pos); ++i) - { - } - nrzeroes = (int)(i - startpos); - if ((nrzeroes) >= (16)) - { - int lng = (int)(nrzeroes >> 4); - int nrmarker = 0; - for (nrmarker = (int)(1); nrmarker <= lng; ++nrmarker) - { - stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes[0], M16zeroes[1]); - } - nrzeroes &= (int)(15); - } - stbiw__jpg_calcBits((int)(DU[i]), bits); - stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1], 0], HTAC[(nrzeroes << 4) + bits[1], 1]); - stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]); - } - if (end0pos != 63) - { - stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB[0], EOB[1]); - } - - return (int)(DU[0]); - } - - public static int stbi_write_jpg_core(stbi__write_context s, int width, int height, int comp, void* data, int quality) - { - int row = 0; - int col = 0; - int i = 0; - int k = 0; - float* fdtbl_Y = stackalloc float[64]; - float* fdtbl_UV = stackalloc float[64]; - byte* YTable = stackalloc byte[64]; - byte* UVTable = stackalloc byte[64]; - if (((((data == null) || (width == 0)) || (height == 0)) || ((comp) > (4))) || ((comp) < (1))) - { - return (int)(0); - } - - quality = (int)((quality) != 0 ? quality : 90); - quality = (int)((quality) < (1) ? 1 : (quality) > (100) ? 100 : quality); - quality = (int)((quality) < (50) ? 5000 / quality : 200 - quality * 2); - for (i = (int)(0); (i) < (64); ++i) - { - int uvti = 0; - int yti = (int)((YQT[i] * quality + 50) / 100); - YTable[stbiw__jpg_ZigZag[i]] = ((byte)((yti) < (1) ? 1 : (yti) > (255) ? 255 : yti)); - uvti = (int)((UVQT[i] * quality + 50) / 100); - UVTable[stbiw__jpg_ZigZag[i]] = ((byte)((uvti) < (1) ? 1 : (uvti) > (255) ? 255 : uvti)); - } - for (row = (int)(0), k = (int)(0); (row) < (8); ++row) - { - for (col = (int)(0); (col) < (8); ++col, ++k) - { - fdtbl_Y[k] = (float)(1 / (YTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col])); - fdtbl_UV[k] = (float)(1 / (UVTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col])); - } - } - { - byte* head1 = stackalloc byte[24]; - head1[0] = (byte)(0xFF); - head1[1] = (byte)(0xC0); - head1[2] = (byte)(0); - head1[3] = (byte)(0x11); - head1[4] = (byte)(8); - head1[5] = (byte)(height >> 8); - head1[6] = (byte)((height) & 0xff); - head1[7] = (byte)(width >> 8); - head1[8] = (byte)((width) & 0xff); - head1[9] = (byte)(3); - head1[10] = (byte)(1); - head1[11] = (byte)(0x11); - head1[12] = (byte)(0); - head1[13] = (byte)(2); - head1[14] = (byte)(0x11); - head1[15] = (byte)(1); - head1[16] = (byte)(3); - head1[17] = (byte)(0x11); - head1[18] = (byte)(1); - head1[19] = (byte)(0xFF); - head1[20] = (byte)(0xC4); - head1[21] = (byte)(0x01); - head1[22] = (byte)(0xA2); - head1[23] = (byte)(0); - fixed (byte* h = head0) - { - s.func(s.context, h, head0.Length); - } - s.func(s.context, (void*)(YTable), 64); - stbiw__putc(s, (byte)(1)); - s.func(s.context, UVTable, 64); - s.func(s.context, (void*)(head1), 24); - fixed (byte* d = &std_dc_luminance_nrcodes[1]) - { - s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); - } - fixed (byte* d = std_dc_luminance_values) - { - s.func(s.context, d, std_dc_chrominance_values.Length); - } - stbiw__putc(s, (byte)(0x10)); - fixed (byte* a = &std_ac_luminance_nrcodes[1]) - { - s.func(s.context, a, std_ac_luminance_nrcodes.Length - 1); - } - fixed (byte* d = std_ac_luminance_values) - { - s.func(s.context, d, std_ac_chrominance_values.Length); - } - stbiw__putc(s, (byte)(1)); - fixed (byte* d = &std_dc_chrominance_nrcodes[1]) - { - s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); - } - fixed (byte* d = std_dc_chrominance_values) - { - s.func(s.context, d, std_dc_chrominance_values.Length); - } - stbiw__putc(s, (byte)(0x11)); - fixed (byte* a = &std_ac_chrominance_nrcodes[1]) - { - s.func(s.context, a, std_ac_chrominance_nrcodes.Length - 1); - } - fixed (byte* d = std_ac_chrominance_values) - { - s.func(s.context, d, std_ac_chrominance_values.Length); - } - fixed (byte* h = head2) - { - s.func(s.context, h, head2.Length); - } - } - - { - ushort* fillBits = stackalloc ushort[2]; - fillBits[0] = (ushort)(0x7F); - fillBits[1] = (ushort)(7); - byte* imageData = (byte*)(data); - int DCY = (int)(0); - int DCU = (int)(0); - int DCV = (int)(0); - int bitBuf = (int)(0); - int bitCnt = (int)(0); - int ofsG = (int)((comp) > (2) ? 1 : 0); - int ofsB = (int)((comp) > (2) ? 2 : 0); - int x = 0; - int y = 0; - int pos = 0; - float* YDU = stackalloc float[64]; - float* UDU = stackalloc float[64]; - float* VDU = stackalloc float[64]; - - for (y = (int)(0); (y) < (height); y += (int)(8)) - { - for (x = (int)(0); (x) < (width); x += (int)(8)) - { - for (row = (int)(y), pos = (int)(0); (row) < (y + 8); ++row) - { - int clamped_row = (int)(((row) < (height)) ? row : height - 1); - int base_p = (int)(((stbi__flip_vertically_on_write) != 0 ? (height - 1 - clamped_row) : clamped_row) * width * comp); - for (col = (int)(x); (col) < (x + 8); ++col, ++pos) - { - float r = 0; - float g = 0; - float b = 0; - int p = (int)(base_p + (((col) < (width)) ? col : (width - 1)) * comp); - r = (float)(imageData[p + 0]); - g = (float)(imageData[p + ofsG]); - b = (float)(imageData[p + ofsB]); - YDU[pos] = (float)(+0.29900f * r + 0.58700f * g + 0.11400f * b - 128); - UDU[pos] = (float)(-0.16874f * r - 0.33126f * g + 0.50000f * b); - VDU[pos] = (float)(+0.50000f * r - 0.41869f * g - 0.08131f * b); - } - } - DCY = (int)(stbiw__jpg_processDU(s, &bitBuf, &bitCnt, YDU, fdtbl_Y, (int)(DCY), YDC_HT, YAC_HT)); - DCU = (int)(stbiw__jpg_processDU(s, &bitBuf, &bitCnt, UDU, fdtbl_UV, (int)(DCU), UVDC_HT, UVAC_HT)); - DCV = (int)(stbiw__jpg_processDU(s, &bitBuf, &bitCnt, VDU, fdtbl_UV, (int)(DCV), UVDC_HT, UVAC_HT)); - } - } - stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits[0], fillBits[1]); - } - - stbiw__putc(s, (byte)(0xFF)); - stbiw__putc(s, (byte)(0xD9)); - return (int)(1); - } +{ + unsafe partial class StbImageWrite + { + public static int stbi__flip_vertically_on_write; + + public static int stbi_write_png_compression_level = 8; + + public static int stbi_write_force_png_filter = -1; + + public static ushort[] lengthc = + { + 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, + 227, 258, 259 + }; + + public static byte[] lengtheb = + {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0}; + + public static ushort[] distc = + { + 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, + 6145, 8193, 12289, 16385, 24577, 32768 + }; + + public static byte[] disteb = + {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; + + public static uint[] crc_table = + { + 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, 0x0eDB8832, + 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, + 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0, 0xFD62F97A, + 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, + 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, + 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, + 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, + 0xB6662D3D, 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, + 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, 0x6B6B51F4, + 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, + 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 0x4DB26158, 0x3AB551CE, 0xA3BC0074, + 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, + 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, + 0x206F85B3, 0xB966D409, 0xCE61E49F, 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, + 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, + 0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, + 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, 0xFED41B76, + 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E, + 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, + 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, + 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, + 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, + 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, + 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, + 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, + 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, + 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 0xBDBDF21C, 0xCABAC28A, 0x53B39330, + 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, + 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D + }; + + public static byte[] stbiw__jpg_ZigZag = + { + 0, 1, 5, 6, 14, 15, 27, 28, 2, 4, 7, 13, 16, 26, 29, 42, 3, 8, 12, 17, 25, 30, 41, 43, 9, 11, 18, 24, 31, + 40, 44, 53, 10, 19, 23, 32, 39, 45, 52, 54, 20, 22, 33, 38, 46, 51, 55, 60, 21, 34, 37, 47, 50, 56, 59, 61, + 35, 36, 48, 49, 57, 58, 62, 63 + }; + + public static byte[] std_dc_luminance_nrcodes = { 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 }; + + public static byte[] std_dc_luminance_values = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; + + public static byte[] std_ac_luminance_nrcodes = { 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d }; + + public static byte[] std_ac_luminance_values = + { + 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, + 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, + 0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, + 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, + 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x83, + 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, + 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, + 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, + 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa + }; + + public static byte[] std_dc_chrominance_nrcodes = { 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 }; + + public static byte[] std_dc_chrominance_values = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; + + public static byte[] std_ac_chrominance_nrcodes = { 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 }; + + public static byte[] std_ac_chrominance_values = + { + 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22, + 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1, + 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, + 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, + 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, + 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, + 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, + 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, + 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa + }; + + public static ushort[,] YDC_HT = + {{0, 2}, {2, 3}, {3, 3}, {4, 3}, {5, 3}, {6, 3}, {14, 4}, {30, 5}, {62, 6}, {126, 7}, {254, 8}, {510, 9}}; + + public static ushort[,] UVDC_HT = + { + {0, 2}, {1, 2}, {2, 2}, {6, 3}, {14, 4}, {30, 5}, {62, 6}, {126, 7}, {254, 8}, {510, 9}, {1022, 10}, + {2046, 11} + }; + + public static ushort[,] YAC_HT = + { + {10, 4}, {0, 2}, {1, 2}, {4, 3}, {11, 4}, {26, 5}, {120, 7}, {248, 8}, {1014, 10}, {65410, 16}, {65411, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {12, 4}, {27, 5}, {121, 7}, {502, 9}, {2038, 11}, + {65412, 16}, {65413, 16}, {65414, 16}, {65415, 16}, {65416, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {28, 5}, {249, 8}, {1015, 10}, {4084, 12}, {65417, 16}, {65418, 16}, {65419, 16}, {65420, 16}, + {65421, 16}, {65422, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {58, 6}, {503, 9}, {4085, 12}, + {65423, 16}, {65424, 16}, {65425, 16}, {65426, 16}, {65427, 16}, {65428, 16}, {65429, 16}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {59, 6}, {1016, 10}, {65430, 16}, {65431, 16}, {65432, 16}, {65433, 16}, + {65434, 16}, {65435, 16}, {65436, 16}, {65437, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {122, 7}, {2039, 11}, {65438, 16}, {65439, 16}, {65440, 16}, {65441, 16}, {65442, 16}, {65443, 16}, + {65444, 16}, {65445, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {123, 7}, {4086, 12}, {65446, 16}, + {65447, 16}, {65448, 16}, {65449, 16}, {65450, 16}, {65451, 16}, {65452, 16}, {65453, 16}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {250, 8}, {4087, 12}, {65454, 16}, {65455, 16}, {65456, 16}, {65457, 16}, + {65458, 16}, {65459, 16}, {65460, 16}, {65461, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {504, 9}, {32704, 15}, {65462, 16}, {65463, 16}, {65464, 16}, {65465, 16}, {65466, 16}, {65467, 16}, + {65468, 16}, {65469, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {505, 9}, {65470, 16}, + {65471, 16}, {65472, 16}, {65473, 16}, {65474, 16}, {65475, 16}, {65476, 16}, {65477, 16}, {65478, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {506, 9}, {65479, 16}, {65480, 16}, {65481, 16}, + {65482, 16}, {65483, 16}, {65484, 16}, {65485, 16}, {65486, 16}, {65487, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {1017, 10}, {65488, 16}, {65489, 16}, {65490, 16}, {65491, 16}, {65492, 16}, + {65493, 16}, {65494, 16}, {65495, 16}, {65496, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {1018, 10}, {65497, 16}, {65498, 16}, {65499, 16}, {65500, 16}, {65501, 16}, {65502, 16}, {65503, 16}, + {65504, 16}, {65505, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {2040, 11}, {65506, 16}, + {65507, 16}, {65508, 16}, {65509, 16}, {65510, 16}, {65511, 16}, {65512, 16}, {65513, 16}, {65514, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {65515, 16}, {65516, 16}, {65517, 16}, {65518, 16}, + {65519, 16}, {65520, 16}, {65521, 16}, {65522, 16}, {65523, 16}, {65524, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {2041, 11}, {65525, 16}, {65526, 16}, {65527, 16}, {65528, 16}, {65529, 16}, {65530, 16}, + {65531, 16}, {65532, 16}, {65533, 16}, {65534, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0} + }; + + public static ushort[,] UVAC_HT = + { + {0, 2}, {1, 2}, {4, 3}, {10, 4}, {24, 5}, {25, 5}, {56, 6}, {120, 7}, {500, 9}, {1014, 10}, {4084, 12}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {11, 4}, {57, 6}, {246, 8}, {501, 9}, {2038, 11}, + {4085, 12}, {65416, 16}, {65417, 16}, {65418, 16}, {65419, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {26, 5}, {247, 8}, {1015, 10}, {4086, 12}, {32706, 15}, {65420, 16}, {65421, 16}, {65422, 16}, + {65423, 16}, {65424, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {27, 5}, {248, 8}, {1016, 10}, + {4087, 12}, {65425, 16}, {65426, 16}, {65427, 16}, {65428, 16}, {65429, 16}, {65430, 16}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {58, 6}, {502, 9}, {65431, 16}, {65432, 16}, {65433, 16}, {65434, 16}, + {65435, 16}, {65436, 16}, {65437, 16}, {65438, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {59, 6}, + {1017, 10}, {65439, 16}, {65440, 16}, {65441, 16}, {65442, 16}, {65443, 16}, {65444, 16}, {65445, 16}, + {65446, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {121, 7}, {2039, 11}, {65447, 16}, {65448, 16}, + {65449, 16}, {65450, 16}, {65451, 16}, {65452, 16}, {65453, 16}, {65454, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {122, 7}, {2040, 11}, {65455, 16}, {65456, 16}, {65457, 16}, {65458, 16}, + {65459, 16}, {65460, 16}, {65461, 16}, {65462, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {249, 8}, {65463, 16}, {65464, 16}, {65465, 16}, {65466, 16}, {65467, 16}, {65468, 16}, {65469, 16}, + {65470, 16}, {65471, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {503, 9}, {65472, 16}, + {65473, 16}, {65474, 16}, {65475, 16}, {65476, 16}, {65477, 16}, {65478, 16}, {65479, 16}, {65480, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {504, 9}, {65481, 16}, {65482, 16}, {65483, 16}, + {65484, 16}, {65485, 16}, {65486, 16}, {65487, 16}, {65488, 16}, {65489, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {505, 9}, {65490, 16}, {65491, 16}, {65492, 16}, {65493, 16}, {65494, 16}, + {65495, 16}, {65496, 16}, {65497, 16}, {65498, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {506, 9}, {65499, 16}, {65500, 16}, {65501, 16}, {65502, 16}, {65503, 16}, {65504, 16}, {65505, 16}, + {65506, 16}, {65507, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {2041, 11}, {65508, 16}, + {65509, 16}, {65510, 16}, {65511, 16}, {65512, 16}, {65513, 16}, {65514, 16}, {65515, 16}, {65516, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {16352, 14}, {65517, 16}, {65518, 16}, {65519, 16}, + {65520, 16}, {65521, 16}, {65522, 16}, {65523, 16}, {65524, 16}, {65525, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {1018, 10}, {32707, 15}, {65526, 16}, {65527, 16}, {65528, 16}, {65529, 16}, {65530, 16}, + {65531, 16}, {65532, 16}, {65533, 16}, {65534, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0} + }; + + public static int[] YQT = + { + 16, 11, 10, 16, 24, 40, 51, 61, 12, 12, 14, 19, 26, 58, 60, 55, 14, 13, 16, 24, 40, 57, 69, 56, 14, 17, 22, + 29, 51, 87, 80, 62, 18, 22, 37, 56, 68, 109, 103, 77, 24, 35, 55, 64, 81, 104, 113, 92, 49, 64, 78, 87, 103, + 121, 120, 101, 72, 92, 95, 98, 112, 100, 103, 99 + }; + + public static int[] UVQT = + { + 17, 18, 24, 47, 99, 99, 99, 99, 18, 21, 26, 66, 99, 99, 99, 99, 24, 26, 56, 99, 99, 99, 99, 99, 47, 66, 99, + 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, + 99, 99, 99, 99, 99, 99, 99, 99, 99, 99 + }; + + public static float[] aasf = + { + 1.0f * 2.828427125f, 1.387039845f * 2.828427125f, 1.306562965f * 2.828427125f, 1.175875602f * 2.828427125f, + 1.0f * 2.828427125f, 0.785694958f * 2.828427125f, 0.541196100f * 2.828427125f, 0.275899379f * 2.828427125f + }; + + public static byte[] head0 = + { + 0xFF, 0xD8, 0xFF, 0xE0, 0, 0x10, (byte) 'J', (byte) 'F', (byte) 'I', (byte) 'F', 0, 1, 1, 0, 0, 1, 0, 1, 0, + 0, 0xFF, 0xDB, 0, 0x84, 0 + }; + + public static byte[] head2 = { 0xFF, 0xDA, 0, 0xC, 3, 1, 0, 2, 0x11, 3, 0x11, 0, 0x3F, 0 }; + + public static void stbi_flip_vertically_on_write(int flag) + { + stbi__flip_vertically_on_write = flag; + } + + public static void stbiw__putc(stbi__write_context s, byte c) + { + s.func(s.context, &c, 1); + } + + public static void stbiw__write3(stbi__write_context s, byte a, byte b, byte c) + { + var arr = stackalloc byte[3]; + arr[0] = a; + arr[1] = b; + arr[2] = c; + s.func(s.context, arr, 3); + } + + public static void stbiw__write_pixel(stbi__write_context s, int rgb_dir, int comp, int write_alpha, + int expand_mono, byte* d) + { + var bg = stackalloc byte[3]; + bg[0] = 255; + bg[1] = 0; + bg[2] = 255; + var px = stackalloc byte[3]; + var k = 0; + if (write_alpha < 0) + s.func(s.context, &d[comp - 1], 1); + switch (comp) + { + case 2: + case 1: + if (expand_mono != 0) + stbiw__write3(s, d[0], d[0], d[0]); + else + s.func(s.context, d, 1); + break; + case 3: + case 4: + if (comp == 4 && write_alpha == 0) + { + for (k = 0; k < 3; ++k) px[k] = (byte)(bg[k] + (d[k] - bg[k]) * d[3] / 255); + stbiw__write3(s, px[1 - rgb_dir], px[1], px[1 + rgb_dir]); + break; + } + + stbiw__write3(s, d[1 - rgb_dir], d[1], d[1 + rgb_dir]); + break; + } + + if (write_alpha > 0) + s.func(s.context, &d[comp - 1], 1); + } + + public static void stbiw__write_pixels(stbi__write_context s, int rgb_dir, int vdir, int x, int y, int comp, + void* data, int write_alpha, int scanline_pad, int expand_mono) + { + var zero = (uint)0; + var i = 0; + var j = 0; + var j_end = 0; + if (y <= 0) + return; + if (stbi__flip_vertically_on_write != 0) + vdir *= -1; + if (vdir < 0) + { + j_end = -1; + j = y - 1; + } + else + { + j_end = y; + j = 0; + } + + for (; j != j_end; j += vdir) + { + for (i = 0; i < x; ++i) + { + var d = (byte*)data + (j * x + i) * comp; + stbiw__write_pixel(s, rgb_dir, comp, write_alpha, expand_mono, d); + } + + s.func(s.context, &zero, scanline_pad); + } + } + + public static int stbi_write_bmp_core(stbi__write_context s, int x, int y, int comp, void* data) + { + var pad = (-x * 3) & 3; + return stbiw__outfile(s, -1, -1, x, y, comp, 1, data, 0, pad, "11 4 22 44 44 22 444444", (int)'B', + (int)'M', 14 + 40 + (x * 3 + pad) * y, 0, 0, 14 + 40, 40, x, y, 1, 24, 0, 0, 0, 0, 0, 0); + } + + public static int stbi_write_tga_core(stbi__write_context s, int x, int y, int comp, void* data) + { + var has_alpha = comp == 2 || comp == 4 ? 1 : 0; + var colorbytes = has_alpha != 0 ? comp - 1 : comp; + var format = colorbytes < 2 ? 3 : 2; + if (y < 0 || x < 0) + return 0; + if (stbi_write_tga_with_rle == 0) + return stbiw__outfile(s, -1, -1, x, y, comp, 0, data, has_alpha, 0, "111 221 2222 11", 0, 0, format, 0, + 0, 0, 0, 0, x, y, (colorbytes + has_alpha) * 8, has_alpha * 8); + + var i = 0; + var j = 0; + var k = 0; + var jend = 0; + var jdir = 0; + stbiw__writef(s, "111 221 2222 11", 0, 0, format + 8, 0, 0, 0, 0, 0, x, y, (colorbytes + has_alpha) * 8, + has_alpha * 8); + if (stbi__flip_vertically_on_write != 0) + { + j = 0; + jend = y; + jdir = 1; + } + else + { + j = y - 1; + jend = -1; + jdir = -1; + } + + for (; j != jend; j += jdir) + { + var row = (byte*)data + j * x * comp; + var len = 0; + for (i = 0; i < x; i += len) + { + var begin = row + i * comp; + var diff = 1; + len = 1; + if (i < x - 1) + { + ++len; + diff = CRuntime.memcmp(begin, row + (i + 1) * comp, (ulong)comp); + if (diff != 0) + { + var prev = begin; + for (k = i + 2; k < x && len < 128; ++k) + if (CRuntime.memcmp(prev, row + k * comp, (ulong)comp) != 0) + { + prev += comp; + ++len; + } + else + { + --len; + break; + } + } + else + { + for (k = i + 2; k < x && len < 128; ++k) + if (CRuntime.memcmp(begin, row + k * comp, (ulong)comp) == 0) + ++len; + else + break; + } + } + + if (diff != 0) + { + var header = (byte)((len - 1) & 0xff); + s.func(s.context, &header, 1); + for (k = 0; k < len; ++k) stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin + k * comp); + } + else + { + var header = (byte)((len - 129) & 0xff); + s.func(s.context, &header, 1); + stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin); + } + } + } + + return 1; + } + + public static void stbiw__linear_to_rgbe(byte* rgbe, float* linear) + { + var exponent = 0; + var maxcomp = linear[0] > (linear[1] > linear[2] ? linear[1] : linear[2]) ? linear[0] : + linear[1] > linear[2] ? linear[1] : linear[2]; + if (maxcomp < 1e-32f) + { + rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0; + } + else + { + var normalize = (float)CRuntime.frexp(maxcomp, &exponent) * 256.0f / maxcomp; + rgbe[0] = (byte)(linear[0] * normalize); + rgbe[1] = (byte)(linear[1] * normalize); + rgbe[2] = (byte)(linear[2] * normalize); + rgbe[3] = (byte)(exponent + 128); + } + } + + public static void stbiw__write_run_data(stbi__write_context s, int length, byte databyte) + { + var lengthbyte = (byte)((length + 128) & 0xff); + s.func(s.context, &lengthbyte, 1); + s.func(s.context, &databyte, 1); + } + + public static void stbiw__write_dump_data(stbi__write_context s, int length, byte* data) + { + var lengthbyte = (byte)(length & 0xff); + s.func(s.context, &lengthbyte, 1); + s.func(s.context, data, length); + } + + public static void stbiw__write_hdr_scanline(stbi__write_context s, int width, int ncomp, byte* scratch, + float* scanline) + { + var scanlineheader = stackalloc byte[4]; + scanlineheader[0] = 2; + scanlineheader[1] = 2; + scanlineheader[2] = 0; + scanlineheader[3] = 0; + + var rgbe = stackalloc byte[4]; + var linear = stackalloc float[3]; + var x = 0; + scanlineheader[2] = (byte)((width & 0xff00) >> 8); + scanlineheader[3] = (byte)(width & 0x00ff); + if (width < 8 || width >= 32768) + { + for (x = 0; x < width; x++) + { + switch (ncomp) + { + case 4: + case 3: + linear[2] = scanline[x * ncomp + 2]; + linear[1] = scanline[x * ncomp + 1]; + linear[0] = scanline[x * ncomp + 0]; + break; + default: + linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; + break; + } + + stbiw__linear_to_rgbe(rgbe, linear); + s.func(s.context, rgbe, 4); + } + } + else + { + var c = 0; + var r = 0; + for (x = 0; x < width; x++) + { + switch (ncomp) + { + case 4: + case 3: + linear[2] = scanline[x * ncomp + 2]; + linear[1] = scanline[x * ncomp + 1]; + linear[0] = scanline[x * ncomp + 0]; + break; + default: + linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; + break; + } + + stbiw__linear_to_rgbe(rgbe, linear); + scratch[x + width * 0] = rgbe[0]; + scratch[x + width * 1] = rgbe[1]; + scratch[x + width * 2] = rgbe[2]; + scratch[x + width * 3] = rgbe[3]; + } + + s.func(s.context, scanlineheader, 4); + for (c = 0; c < 4; c++) + { + var comp = &scratch[width * c]; + x = 0; + while (x < width) + { + r = x; + while (r + 2 < width) + { + if (comp[r] == comp[r + 1] && comp[r] == comp[r + 2]) + break; + ++r; + } + + if (r + 2 >= width) + r = width; + while (x < r) + { + var len = r - x; + if (len > 128) + len = 128; + stbiw__write_dump_data(s, len, &comp[x]); + x += len; + } + + if (r + 2 < width) + { + while (r < width && comp[r] == comp[x]) ++r; + while (x < r) + { + var len = r - x; + if (len > 127) + len = 127; + stbiw__write_run_data(s, len, comp[x]); + x += len; + } + } + } + } + } + } + + public static void* stbiw__sbgrowf(void** arr, int increment, int itemsize) + { + var m = *arr != null ? 2 * ((int*)*arr - 2)[0] + increment : increment + 1; + var p = CRuntime.realloc(*arr != null ? (int*)*arr - 2 : null, (ulong)(itemsize * m + sizeof(int) * 2)); + if (p != null) + { + if (*arr == null) + ((int*)p)[1] = 0; + *arr = (int*)p + 2; + ((int*)*arr - 2)[0] = m; + } + + return *arr; + } + + public static byte* stbiw__zlib_flushf(byte* data, uint* bitbuffer, int* bitcount) + { + while (*bitcount >= 8) + { + if (data == null || ((int*)data - 2)[1] + 1 >= ((int*)data - 2)[0]) + stbiw__sbgrowf((void**)&data, 1, sizeof(byte)); + data[((int*)data - 2)[1]++] = (byte)(*bitbuffer & 0xff); + *bitbuffer >>= 8; + *bitcount -= 8; + } + + return data; + } + + public static int stbiw__zlib_bitrev(int code, int codebits) + { + var res = 0; + while (codebits-- != 0) + { + res = (res << 1) | (code & 1); + code >>= 1; + } + + return res; + } + + public static uint stbiw__zlib_countm(byte* a, byte* b, int limit) + { + var i = 0; + for (i = 0; i < limit && i < 258; ++i) + if (a[i] != b[i]) + break; + return (uint)i; + } + + public static uint stbiw__zhash(byte* data) + { + var hash = (uint)(data[0] + (data[1] << 8) + (data[2] << 16)); + hash ^= hash << 3; + hash += hash >> 5; + hash ^= hash << 4; + hash += hash >> 17; + hash ^= hash << 25; + hash += hash >> 6; + return hash; + } + + public static byte* stbi_zlib_compress(byte* data, int data_len, int* out_len, int quality) + { + var bitbuf = (uint)0; + var i = 0; + var j = 0; + var bitcount = 0; + byte* _out_ = null; + var hash_table = (byte***)CRuntime.malloc((ulong)(16384 * sizeof(char**))); + if (hash_table == null) + return null; + if (quality < 5) + quality = 5; + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + + _out_[((int*)_out_ - 2)[1]++] = 0x78; + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + + _out_[((int*)_out_ - 2)[1]++] = 0x5e; + { + bitbuf |= (uint)(1 << bitcount); + bitcount += 1; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + + { + bitbuf |= (uint)(1 << bitcount); + bitcount += 2; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + + for (i = 0; i < 16384; ++i) hash_table[i] = null; + i = 0; + while (i < data_len - 3) + { + var h = (int)(stbiw__zhash(data + i) & (16384 - 1)); + var best = 3; + byte* bestloc = null; + var hlist = hash_table[h]; + var n = hlist != null ? ((int*)hlist - 2)[1] : 0; + for (j = 0; j < n; ++j) + if (hlist[j] - data > i - 32768) + { + var d = (int)stbiw__zlib_countm(hlist[j], data + i, data_len - i); + if (d >= best) + { + best = d; + bestloc = hlist[j]; + } + } + + if (hash_table[h] != null && ((int*)hash_table[h] - 2)[1] == 2 * quality) + { + CRuntime.memmove(hash_table[h], hash_table[h] + quality, (ulong)(sizeof(byte*) * quality)); + ((int*)hash_table[h] - 2)[1] = quality; + } + + if (hash_table[h] == null || ((int*)hash_table[h] - 2)[1] + 1 >= ((int*)hash_table[h] - 2)[0]) + stbiw__sbgrowf((void**)&hash_table[h], 1, sizeof(byte*)); + hash_table[h][((int*)hash_table[h] - 2)[1]++] = data + i; + if (bestloc != null) + { + h = (int)(stbiw__zhash(data + i + 1) & (16384 - 1)); + hlist = hash_table[h]; + n = hlist != null ? ((int*)hlist - 2)[1] : 0; + for (j = 0; j < n; ++j) + if (hlist[j] - data > i - 32767) + { + var e = (int)stbiw__zlib_countm(hlist[j], data + i + 1, data_len - i - 1); + if (e > best) + { + bestloc = null; + break; + } + } + } + + if (bestloc != null) + { + var d = (int)(data + i - bestloc); + for (j = 0; best > lengthc[j + 1] - 1; ++j) + { + } + + if (j + 257 <= 143) + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0x30 + j + 257, 8) << bitcount); + bitcount += 8; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + else if (j + 257 <= 255) + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0x190 + j + 257 - 144, 9) << bitcount); + bitcount += 9; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + else if (j + 257 <= 279) + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0 + j + 257 - 256, 7) << bitcount); + bitcount += 7; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + else + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0xc0 + j + 257 - 280, 8) << bitcount); + bitcount += 8; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + + if (lengtheb[j] != 0) + { + bitbuf |= (uint)((best - lengthc[j]) << bitcount); + bitcount += lengtheb[j]; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + + for (j = 0; d > distc[j + 1] - 1; ++j) + { + } + + { + bitbuf |= (uint)(stbiw__zlib_bitrev(j, 5) << bitcount); + bitcount += 5; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + if (disteb[j] != 0) + { + bitbuf |= (uint)((d - distc[j]) << bitcount); + bitcount += disteb[j]; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + + i += best; + } + else + { + if (data[i] <= 143) + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0x30 + data[i], 8) << bitcount); + bitcount += 8; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + else + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0x190 + data[i] - 144, 9) << bitcount); + bitcount += 9; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + + ++i; + } + } + + for (; i < data_len; ++i) + if (data[i] <= 143) + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0x30 + data[i], 8) << bitcount); + bitcount += 8; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + else + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0x190 + data[i] - 144, 9) << bitcount); + bitcount += 9; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + + bitbuf |= (uint)(stbiw__zlib_bitrev(0, 7) << bitcount); + bitcount += 7; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + + while (bitcount != 0) + { + bitbuf |= (uint)(0 << bitcount); + bitcount += 1; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + + for (i = 0; i < 16384; ++i) + if (hash_table[i] != null) + CRuntime.free((int*)hash_table[i] - 2); + CRuntime.free(hash_table); + { + var s1 = (uint)1; + var s2 = (uint)0; + var blocklen = data_len % 5552; + j = 0; + while (j < data_len) + { + for (i = 0; i < blocklen; ++i) + { + s1 += data[j + i]; + s2 += s1; + } + + s1 %= 65521; + s2 %= 65521; + j += blocklen; + blocklen = 5552; + } + + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + _out_[((int*)_out_ - 2)[1]++] = (byte)((s2 >> 8) & 0xff); + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + _out_[((int*)_out_ - 2)[1]++] = (byte)(s2 & 0xff); + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + _out_[((int*)_out_ - 2)[1]++] = (byte)((s1 >> 8) & 0xff); + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + _out_[((int*)_out_ - 2)[1]++] = (byte)(s1 & 0xff); + } + + *out_len = ((int*)_out_ - 2)[1]; + CRuntime.memmove((int*)_out_ - 2, _out_, (ulong)*out_len); + return (byte*)((int*)_out_ - 2); + } + + public static uint stbiw__crc32(byte* buffer, int len) + { + var crc = ~0u; + var i = 0; + for (i = 0; i < len; ++i) crc = (crc >> 8) ^ crc_table[buffer[i] ^ (crc & 0xff)]; + return ~crc; + } + + public static void stbiw__wpcrc(byte** data, int len) + { + var crc = stbiw__crc32(*data - len - 4, len + 4); + (*data)[0] = (byte)((crc >> 24) & 0xff); + (*data)[1] = (byte)((crc >> 16) & 0xff); + (*data)[2] = (byte)((crc >> 8) & 0xff); + (*data)[3] = (byte)(crc & 0xff); + (*data) += 4; + } + + public static byte stbiw__paeth(int a, int b, int c) + { + var p = a + b - c; + var pa = CRuntime.abs(p - a); + var pb = CRuntime.abs(p - b); + var pc = CRuntime.abs(p - c); + if (pa <= pb && pa <= pc) + return (byte)(a & 0xff); + if (pb <= pc) + return (byte)(b & 0xff); + return (byte)(c & 0xff); + } + + public static void stbiw__encode_png_line(byte* pixels, int stride_bytes, int width, int height, int y, int n, + int filter_type, sbyte* line_buffer) + { + var mapping = stackalloc int[5]; + mapping[0] = 0; + mapping[1] = 1; + mapping[2] = 2; + mapping[3] = 3; + mapping[4] = 4; + + var firstmap = stackalloc int[5]; + firstmap[0] = 0; + firstmap[1] = 1; + firstmap[2] = 0; + firstmap[3] = 5; + firstmap[4] = 6; + + var mymap = y != 0 ? mapping : firstmap; + var i = 0; + var type = mymap[filter_type]; + var z = pixels + stride_bytes * (stbi__flip_vertically_on_write != 0 ? height - 1 - y : y); + var signed_stride = stbi__flip_vertically_on_write != 0 ? -stride_bytes : stride_bytes; + if (type == 0) + { + CRuntime.memcpy(line_buffer, z, (ulong)(width * n)); + return; + } + + for (i = 0; i < n; ++i) + switch (type) + { + case 1: + line_buffer[i] = (sbyte)z[i]; + break; + case 2: + line_buffer[i] = (sbyte)(z[i] - z[i - signed_stride]); + break; + case 3: + line_buffer[i] = (sbyte)(z[i] - (z[i - signed_stride] >> 1)); + break; + case 4: + line_buffer[i] = (sbyte)(z[i] - stbiw__paeth(0, z[i - signed_stride], 0)); + break; + case 5: + line_buffer[i] = (sbyte)z[i]; + break; + case 6: + line_buffer[i] = (sbyte)z[i]; + break; + } + + switch (type) + { + case 1: + for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - z[i - n]); + break; + case 2: + for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - z[i - signed_stride]); + break; + case 3: + for (i = n; i < width * n; ++i) + line_buffer[i] = (sbyte)(z[i] - ((z[i - n] + z[i - signed_stride]) >> 1)); + break; + case 4: + for (i = n; i < width * n; ++i) + line_buffer[i] = + (sbyte)(z[i] - stbiw__paeth(z[i - n], z[i - signed_stride], z[i - signed_stride - n])); + break; + case 5: + for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - (z[i - n] >> 1)); + break; + case 6: + for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - stbiw__paeth(z[i - n], 0, 0)); + break; + } + } + + public static byte* stbi_write_png_to_mem(byte* pixels, int stride_bytes, int x, int y, int n, int* out_len) + { + var force_filter = stbi_write_force_png_filter; + var ctype = stackalloc int[5]; + ctype[0] = -1; + ctype[1] = 0; + ctype[2] = 4; + ctype[3] = 2; + ctype[4] = 6; + + var sig = stackalloc byte[8]; + sig[0] = 137; + sig[1] = 80; + sig[2] = 78; + sig[3] = 71; + sig[4] = 13; + sig[5] = 10; + sig[6] = 26; + sig[7] = 10; + + byte* _out_; + byte* o; + byte* filt; + byte* zlib; + sbyte* line_buffer; + var j = 0; + var zlen = 0; + if (stride_bytes == 0) + stride_bytes = x * n; + if (force_filter >= 5) force_filter = -1; + + filt = (byte*)CRuntime.malloc((ulong)((x * n + 1) * y)); + if (filt == null) + return null; + line_buffer = (sbyte*)CRuntime.malloc((ulong)(x * n)); + if (line_buffer == null) + { + CRuntime.free(filt); + return null; + } + + for (j = 0; j < y; ++j) + { + var filter_type = 0; + if (force_filter > -1) + { + filter_type = force_filter; + stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, force_filter, line_buffer); + } + else + { + var best_filter = 0; + var best_filter_val = 0x7fffffff; + var est = 0; + var i = 0; + for (filter_type = 0; filter_type < 5; filter_type++) + { + stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, filter_type, line_buffer); + est = 0; + for (i = 0; i < x * n; ++i) est += CRuntime.abs(line_buffer[i]); + if (est < best_filter_val) + { + best_filter_val = est; + best_filter = filter_type; + } + } + + if (filter_type != best_filter) + { + stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, best_filter, line_buffer); + filter_type = best_filter; + } + } + + filt[j * (x * n + 1)] = (byte)filter_type; + CRuntime.memmove(filt + j * (x * n + 1) + 1, line_buffer, (ulong)(x * n)); + } + + CRuntime.free(line_buffer); + zlib = stbi_zlib_compress(filt, y * (x * n + 1), &zlen, stbi_write_png_compression_level); + CRuntime.free(filt); + if (zlib == null) + return null; + _out_ = (byte*)CRuntime.malloc((ulong)(8 + 12 + 13 + 12 + zlen + 12)); + if (_out_ == null) + return null; + *out_len = 8 + 12 + 13 + 12 + zlen + 12; + o = _out_; + CRuntime.memmove(o, sig, (ulong)8); + o += 8; + o[0] = (13 >> 24) & 0xff; + o[1] = (13 >> 16) & 0xff; + o[2] = (13 >> 8) & 0xff; + o[3] = 13 & 0xff; + o += 4; + o[0] = (byte)("IHDR"[0] & 0xff); + o[1] = (byte)("IHDR"[1] & 0xff); + o[2] = (byte)("IHDR"[2] & 0xff); + o[3] = (byte)("IHDR"[3] & 0xff); + o += 4; + o[0] = (byte)((x >> 24) & 0xff); + o[1] = (byte)((x >> 16) & 0xff); + o[2] = (byte)((x >> 8) & 0xff); + o[3] = (byte)(x & 0xff); + o += 4; + o[0] = (byte)((y >> 24) & 0xff); + o[1] = (byte)((y >> 16) & 0xff); + o[2] = (byte)((y >> 8) & 0xff); + o[3] = (byte)(y & 0xff); + o += 4; + *o++ = 8; + *o++ = (byte)(ctype[n] & 0xff); + *o++ = 0; + *o++ = 0; + *o++ = 0; + stbiw__wpcrc(&o, 13); + o[0] = (byte)((zlen >> 24) & 0xff); + o[1] = (byte)((zlen >> 16) & 0xff); + o[2] = (byte)((zlen >> 8) & 0xff); + o[3] = (byte)(zlen & 0xff); + o += 4; + o[0] = (byte)("IDAT"[0] & 0xff); + o[1] = (byte)("IDAT"[1] & 0xff); + o[2] = (byte)("IDAT"[2] & 0xff); + o[3] = (byte)("IDAT"[3] & 0xff); + o += 4; + CRuntime.memmove(o, zlib, (ulong)zlen); + o += zlen; + CRuntime.free(zlib); + stbiw__wpcrc(&o, zlen); + o[0] = (0 >> 24) & 0xff; + o[1] = (0 >> 16) & 0xff; + o[2] = (0 >> 8) & 0xff; + o[3] = 0 & 0xff; + o += 4; + o[0] = (byte)("IEND"[0] & 0xff); + o[1] = (byte)("IEND"[1] & 0xff); + o[2] = (byte)("IEND"[2] & 0xff); + o[3] = (byte)("IEND"[3] & 0xff); + o += 4; + stbiw__wpcrc(&o, 0); + return _out_; + } + + public static void stbiw__jpg_writeBits(stbi__write_context s, int* bitBufP, int* bitCntP, ushort bs0, + ushort bs1) + { + var bitBuf = *bitBufP; + var bitCnt = *bitCntP; + bitCnt += bs1; + bitBuf |= bs0 << (24 - bitCnt); + while (bitCnt >= 8) + { + var c = (byte)((bitBuf >> 16) & 255); + stbiw__putc(s, c); + if (c == 255) stbiw__putc(s, 0); + bitBuf <<= 8; + bitCnt -= 8; + } + + *bitBufP = bitBuf; + *bitCntP = bitCnt; + } + + public static void stbiw__jpg_DCT(float* d0p, float* d1p, float* d2p, float* d3p, float* d4p, float* d5p, + float* d6p, float* d7p) + { + var d0 = *d0p; + var d1 = *d1p; + var d2 = *d2p; + var d3 = *d3p; + var d4 = *d4p; + var d5 = *d5p; + var d6 = *d6p; + var d7 = *d7p; + float z1 = 0; + float z2 = 0; + float z3 = 0; + float z4 = 0; + float z5 = 0; + float z11 = 0; + float z13 = 0; + var tmp0 = d0 + d7; + var tmp7 = d0 - d7; + var tmp1 = d1 + d6; + var tmp6 = d1 - d6; + var tmp2 = d2 + d5; + var tmp5 = d2 - d5; + var tmp3 = d3 + d4; + var tmp4 = d3 - d4; + var tmp10 = tmp0 + tmp3; + var tmp13 = tmp0 - tmp3; + var tmp11 = tmp1 + tmp2; + var tmp12 = tmp1 - tmp2; + d0 = tmp10 + tmp11; + d4 = tmp10 - tmp11; + z1 = (tmp12 + tmp13) * 0.707106781f; + d2 = tmp13 + z1; + d6 = tmp13 - z1; + tmp10 = tmp4 + tmp5; + tmp11 = tmp5 + tmp6; + tmp12 = tmp6 + tmp7; + z5 = (tmp10 - tmp12) * 0.382683433f; + z2 = tmp10 * 0.541196100f + z5; + z4 = tmp12 * 1.306562965f + z5; + z3 = tmp11 * 0.707106781f; + z11 = tmp7 + z3; + z13 = tmp7 - z3; + *d5p = z13 + z2; + *d3p = z13 - z2; + *d1p = z11 + z4; + *d7p = z11 - z4; + *d0p = d0; + *d2p = d2; + *d4p = d4; + *d6p = d6; + } + + public static void stbiw__jpg_calcBits(int val, ushort* bits) + { + var tmp1 = val < 0 ? -val : val; + val = val < 0 ? val - 1 : val; + bits[1] = 1; + while ((tmp1 >>= 1) != 0) ++bits[1]; + bits[0] = (ushort)(val & ((1 << bits[1]) - 1)); + } + + public static int stbiw__jpg_processDU(stbi__write_context s, int* bitBuf, int* bitCnt, float* CDU, + float* fdtbl, int DC, ushort[,] HTDC, ushort[,] HTAC) + { + var EOB = stackalloc ushort[2]; + EOB[0] = HTAC[0x00, 0]; + EOB[1] = HTAC[0x00, 1]; + + var M16zeroes = stackalloc ushort[2]; + M16zeroes[0] = HTAC[0xF0, 0]; + M16zeroes[1] = HTAC[0xF0, 1]; + + var dataOff = 0; + var i = 0; + var diff = 0; + var end0pos = 0; + var DU = stackalloc int[64]; + for (dataOff = 0; dataOff < 64; dataOff += 8) + stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + 1], &CDU[dataOff + 2], &CDU[dataOff + 3], + &CDU[dataOff + 4], &CDU[dataOff + 5], &CDU[dataOff + 6], &CDU[dataOff + 7]); + for (dataOff = 0; dataOff < 8; ++dataOff) + stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + 8], &CDU[dataOff + 16], &CDU[dataOff + 24], + &CDU[dataOff + 32], &CDU[dataOff + 40], &CDU[dataOff + 48], &CDU[dataOff + 56]); + for (i = 0; i < 64; ++i) + { + var v = CDU[i] * fdtbl[i]; + DU[stbiw__jpg_ZigZag[i]] = (int)(v < 0 ? v - 0.5f : v + 0.5f); + } + + diff = DU[0] - DC; + if (diff == 0) + { + stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTDC[0, 0], HTDC[0, 1]); + } + else + { + var bits = stackalloc ushort[2]; + stbiw__jpg_calcBits(diff, bits); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTDC[bits[1], 0], HTDC[bits[1], 1]); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]); + } + + end0pos = 63; + for (; end0pos > 0 && DU[end0pos] == 0; --end0pos) + { + } + + if (end0pos == 0) + { + stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB[0], EOB[1]); + return DU[0]; + } + + for (i = 1; i <= end0pos; ++i) + { + var startpos = i; + var nrzeroes = 0; + var bits = stackalloc ushort[2]; + for (; DU[i] == 0 && i <= end0pos; ++i) + { + } + + nrzeroes = i - startpos; + if (nrzeroes >= 16) + { + var lng = nrzeroes >> 4; + var nrmarker = 0; + for (nrmarker = 1; nrmarker <= lng; ++nrmarker) + stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes[0], M16zeroes[1]); + nrzeroes &= 15; + } + + stbiw__jpg_calcBits(DU[i], bits); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1], 0], + HTAC[(nrzeroes << 4) + bits[1], 1]); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]); + } + + if (end0pos != 63) stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB[0], EOB[1]); + + return DU[0]; + } + + public static int stbi_write_jpg_core(stbi__write_context s, int width, int height, int comp, void* data, + int quality) + { + var row = 0; + var col = 0; + var i = 0; + var k = 0; + var fdtbl_Y = stackalloc float[64]; + var fdtbl_UV = stackalloc float[64]; + var YTable = stackalloc byte[64]; + var UVTable = stackalloc byte[64]; + if (data == null || width == 0 || height == 0 || comp > 4 || comp < 1) return 0; + + quality = quality != 0 ? quality : 90; + quality = quality < 1 ? 1 : quality > 100 ? 100 : quality; + quality = quality < 50 ? 5000 / quality : 200 - quality * 2; + for (i = 0; i < 64; ++i) + { + var uvti = 0; + var yti = (YQT[i] * quality + 50) / 100; + YTable[stbiw__jpg_ZigZag[i]] = (byte)(yti < 1 ? 1 : yti > 255 ? 255 : yti); + uvti = (UVQT[i] * quality + 50) / 100; + UVTable[stbiw__jpg_ZigZag[i]] = (byte)(uvti < 1 ? 1 : uvti > 255 ? 255 : uvti); + } + + for (row = 0, k = 0; row < 8; ++row) + for (col = 0; col < 8; ++col, ++k) + { + fdtbl_Y[k] = 1 / (YTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); + fdtbl_UV[k] = 1 / (UVTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); + } + + { + var head1 = stackalloc byte[24]; + head1[0] = 0xFF; + head1[1] = 0xC0; + head1[2] = 0; + head1[3] = 0x11; + head1[4] = 8; + head1[5] = (byte)(height >> 8); + head1[6] = (byte)(height & 0xff); + head1[7] = (byte)(width >> 8); + head1[8] = (byte)(width & 0xff); + head1[9] = 3; + head1[10] = 1; + head1[11] = 0x11; + head1[12] = 0; + head1[13] = 2; + head1[14] = 0x11; + head1[15] = 1; + head1[16] = 3; + head1[17] = 0x11; + head1[18] = 1; + head1[19] = 0xFF; + head1[20] = 0xC4; + head1[21] = 0x01; + head1[22] = 0xA2; + head1[23] = 0; + fixed (byte* h = head0) + { + s.func(s.context, h, head0.Length); + } + + s.func(s.context, YTable, 64); + stbiw__putc(s, 1); + s.func(s.context, UVTable, 64); + s.func(s.context, head1, 24); + fixed (byte* d = &std_dc_luminance_nrcodes[1]) + { + s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); + } + + fixed (byte* d = std_dc_luminance_values) + { + s.func(s.context, d, std_dc_chrominance_values.Length); + } + + stbiw__putc(s, 0x10); + fixed (byte* a = &std_ac_luminance_nrcodes[1]) + { + s.func(s.context, a, std_ac_luminance_nrcodes.Length - 1); + } + + fixed (byte* d = std_ac_luminance_values) + { + s.func(s.context, d, std_ac_chrominance_values.Length); + } + + stbiw__putc(s, 1); + fixed (byte* d = &std_dc_chrominance_nrcodes[1]) + { + s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); + } + + fixed (byte* d = std_dc_chrominance_values) + { + s.func(s.context, d, std_dc_chrominance_values.Length); + } + + stbiw__putc(s, 0x11); + fixed (byte* a = &std_ac_chrominance_nrcodes[1]) + { + s.func(s.context, a, std_ac_chrominance_nrcodes.Length - 1); + } + + fixed (byte* d = std_ac_chrominance_values) + { + s.func(s.context, d, std_ac_chrominance_values.Length); + } + + fixed (byte* h = head2) + { + s.func(s.context, h, head2.Length); + } + } + + { + var fillBits = stackalloc ushort[2]; + fillBits[0] = 0x7F; + fillBits[1] = 7; + var imageData = (byte*)data; + var DCY = 0; + var DCU = 0; + var DCV = 0; + var bitBuf = 0; + var bitCnt = 0; + var ofsG = comp > 2 ? 1 : 0; + var ofsB = comp > 2 ? 2 : 0; + var x = 0; + var y = 0; + var pos = 0; + var YDU = stackalloc float[64]; + var UDU = stackalloc float[64]; + var VDU = stackalloc float[64]; + + for (y = 0; y < height; y += 8) + for (x = 0; x < width; x += 8) + { + for (row = y, pos = 0; row < y + 8; ++row) + { + var clamped_row = row < height ? row : height - 1; + var base_p = (stbi__flip_vertically_on_write != 0 ? height - 1 - clamped_row : clamped_row) * + width * comp; + for (col = x; col < x + 8; ++col, ++pos) + { + float r = 0; + float g = 0; + float b = 0; + var p = base_p + (col < width ? col : width - 1) * comp; + r = imageData[p + 0]; + g = imageData[p + ofsG]; + b = imageData[p + ofsB]; + YDU[pos] = +0.29900f * r + 0.58700f * g + 0.11400f * b - 128; + UDU[pos] = -0.16874f * r - 0.33126f * g + 0.50000f * b; + VDU[pos] = +0.50000f * r - 0.41869f * g - 0.08131f * b; + } + } + + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, YDU, fdtbl_Y, DCY, YDC_HT, YAC_HT); + DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, UDU, fdtbl_UV, DCU, UVDC_HT, UVAC_HT); + DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, VDU, fdtbl_UV, DCV, UVDC_HT, UVAC_HT); + } + + stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits[0], fillBits[1]); + } + + stbiw__putc(s, 0xFF); + stbiw__putc(s, 0xD9); + return 1; + } } -} +} \ No newline at end of file From 57af7f3b016bb58598d8e282faa8d21c6d7ff6f5 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Tue, 4 Jan 2022 10:56:19 +0700 Subject: [PATCH 12/23] Moved to Hebron --- StbImageWriteSharp.sln | 9 + generation/StbImageWriteSharp.Generator.sln | 31 +- .../StbImageWriteSharp.Generator/App.config | 6 - .../StbImageWriteSharp.Generator/Program.cs | 179 +- .../Properties/AssemblyInfo.cs | 36 - .../StbImageWriteSharp.Generator.csproj | 74 +- .../stb_image_write.h | 544 +++-- src/ImageWriter.cs | 6 +- src/StbImageWrite.Generated.cs | 1774 +++++++++-------- src/StbImageWrite.cs | 91 +- src/StbImageWriteSharp.csproj | 30 +- 11 files changed, 1401 insertions(+), 1379 deletions(-) delete mode 100644 generation/StbImageWriteSharp.Generator/App.config delete mode 100644 generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs diff --git a/StbImageWriteSharp.sln b/StbImageWriteSharp.sln index 2bf3c42..3521f15 100644 --- a/StbImageWriteSharp.sln +++ b/StbImageWriteSharp.sln @@ -11,6 +11,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "StbImageWriteSharp", "src\S EndProject Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StbImageWriteSharp.Testing", "tests\StbImageWriteSharp.Testing\StbImageWriteSharp.Testing.csproj", "{4295DB99-F5C5-4D33-84DA-02AA2CA141B6}" EndProject +Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Samples", "Samples", "{4C7B9C80-1AE4-47D7-943F-0866D3C05F5D}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Converter", "samples\Converter\Converter.csproj", "{1140E7EA-B7B1-4493-8070-5943F4EF1844}" +EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug|Any CPU = Debug|Any CPU @@ -29,6 +33,10 @@ Global {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.Build.0 = Debug|Any CPU {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.ActiveCfg = Release|Any CPU {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.Build.0 = Release|Any CPU + {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Debug|Any CPU.Build.0 = Debug|Any CPU + {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Release|Any CPU.ActiveCfg = Release|Any CPU + {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Release|Any CPU.Build.0 = Release|Any CPU EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE @@ -36,6 +44,7 @@ Global GlobalSection(NestedProjects) = preSolution {EA7B8121-942A-437D-85D5-E4D55B94E88A} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} {4295DB99-F5C5-4D33-84DA-02AA2CA141B6} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} + {1140E7EA-B7B1-4493-8070-5943F4EF1844} = {4C7B9C80-1AE4-47D7-943F-0866D3C05F5D} EndGlobalSection GlobalSection(ExtensibilityGlobals) = postSolution SolutionGuid = {C9C812E7-F89A-4B6E-8F9D-981D5F8BBAB3} diff --git a/generation/StbImageWriteSharp.Generator.sln b/generation/StbImageWriteSharp.Generator.sln index 09096dd..65baac9 100644 --- a/generation/StbImageWriteSharp.Generator.sln +++ b/generation/StbImageWriteSharp.Generator.sln @@ -5,38 +5,21 @@ VisualStudioVersion = 16.0.30309.148 MinimumVisualStudioVersion = 10.0.40219.1 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StbImageWriteSharp.Generator", "StbImageWriteSharp.Generator\StbImageWriteSharp.Generator.csproj", "{2F372A46-2B31-49ED-BEAA-B7D6E72CD983}" EndProject -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Sichem", "..\..\Sichem\Sichem\Sichem.csproj", "{71352218-91C4-490E-A650-AB17C48D0300}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Hebron", "..\..\Hebron\src\Hebron\Hebron.csproj", "{67178164-2E03-4455-8EE0-3CF089E7A7E5}" EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug|Any CPU = Debug|Any CPU - Debug|Mixed Platforms = Debug|Mixed Platforms - Debug|x64 = Debug|x64 Release|Any CPU = Release|Any CPU - Release|Mixed Platforms = Release|Mixed Platforms - Release|x64 = Release|x64 EndGlobalSection GlobalSection(ProjectConfigurationPlatforms) = postSolution - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Any CPU.ActiveCfg = Debug|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Mixed Platforms.ActiveCfg = Debug|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Mixed Platforms.Build.0 = Debug|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|x64.ActiveCfg = Debug|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|x64.Build.0 = Debug|x64 + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Debug|Any CPU.Build.0 = Debug|Any CPU {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|Any CPU.ActiveCfg = Release|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|Mixed Platforms.ActiveCfg = Release|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|Mixed Platforms.Build.0 = Release|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|x64.ActiveCfg = Release|x64 - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983}.Release|x64.Build.0 = Release|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Debug|Any CPU.ActiveCfg = Debug|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Debug|Mixed Platforms.ActiveCfg = Debug|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Debug|Mixed Platforms.Build.0 = Debug|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Debug|x64.ActiveCfg = Debug|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Debug|x64.Build.0 = Debug|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Release|Any CPU.ActiveCfg = Release|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Release|Mixed Platforms.ActiveCfg = Release|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Release|Mixed Platforms.Build.0 = Release|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Release|x64.ActiveCfg = Release|x64 - {71352218-91C4-490E-A650-AB17C48D0300}.Release|x64.Build.0 = Release|x64 + {67178164-2E03-4455-8EE0-3CF089E7A7E5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {67178164-2E03-4455-8EE0-3CF089E7A7E5}.Debug|Any CPU.Build.0 = Debug|Any CPU + {67178164-2E03-4455-8EE0-3CF089E7A7E5}.Release|Any CPU.ActiveCfg = Release|Any CPU + {67178164-2E03-4455-8EE0-3CF089E7A7E5}.Release|Any CPU.Build.0 = Release|Any CPU EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE diff --git a/generation/StbImageWriteSharp.Generator/App.config b/generation/StbImageWriteSharp.Generator/App.config deleted file mode 100644 index 8e15646..0000000 --- a/generation/StbImageWriteSharp.Generator/App.config +++ /dev/null @@ -1,6 +0,0 @@ - - - - - - \ No newline at end of file diff --git a/generation/StbImageWriteSharp.Generator/Program.cs b/generation/StbImageWriteSharp.Generator/Program.cs index c022637..edb4269 100644 --- a/generation/StbImageWriteSharp.Generator/Program.cs +++ b/generation/StbImageWriteSharp.Generator/Program.cs @@ -1,176 +1,62 @@ -using System; +using Hebron.Roslyn; +using Microsoft.CodeAnalysis; +using System; using System.Collections.Generic; using System.IO; +using System.Linq; using System.Text; -using Sichem; namespace StbSharp.StbImage.Generator { class Program { - private static void Write(Dictionary input, StringBuilder output) - { - foreach (var pair in input) - { - output.Append(pair.Value); - } - } - - private static string PostProcess(string data) + private static string Write(Dictionary input) where T : SyntaxNode { - data = Utility.ReplaceNativeCalls(data); - - data = data.Replace("((void *)(0))", "null"); - data = data.Replace("(void *)(0)", "null"); - - data = data.Replace("][", ", "); - - data = data.Replace("'J', 'F', 'I', 'F'", - "(byte)'J', (byte)'F', (byte)'I', (byte)'F'"); - - data = data.Replace("int has_alpha = (int)(((comp) == (2)) || ((comp) == (4)));", - "int has_alpha = (((comp) == (2)) || ((comp) == (4)))?1:0;"); - data = data.Replace("*arr?", - "*arr != null?"); - data = data.Replace("sizeof(int)* * 2", - "sizeof(int) * 2"); - data = data.Replace("(int)(sizeof((*(data))))", - "sizeof(byte)"); - data = data.Replace("(int)(sizeof((*(_out_))))", - "sizeof(byte)"); - data = data.Replace("(int)(sizeof((*(hash_table[h]))))", - "sizeof(byte*)"); - data = data.Replace("sizeof((hash_table[h, 0]))", - "sizeof(byte*)"); - data = data.Replace("(byte***)(malloc((ulong)(16384 * sizeof(char**)))))", - "(byte***)(malloc((ulong)(16384 * sizeof(byte**))))"); - data = data.Replace("(hlist)?", - "(hlist != null)?"); - data = data.Replace("(hash_table[i])?", - "(hash_table[i] != null)?"); - - data = data.Replace("ushort* bs", "ushort bs0, ushort bs1"); - data = data.Replace("bs[0]", "bs0"); - data = data.Replace("bs[1]", "bs1"); - - data = data.Replace("ushort** HTDC, ushort** HTAC", "ushort[,] HTDC, ushort[,] HTAC"); - data = data.Replace("HTDC[0]", "HTDC[0, 0], HTDC[0, 1]"); - data = data.Replace("HTDC[bits[1]]", "HTDC[bits[1], 0], HTDC[bits[1], 1]"); - data = data.Replace("HTDC[bits[1]]", "HTDC[bits[1], 0], HTDC[bits[1], 1]"); - data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits);", - "stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]);"); - data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB);", - "stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB[0], EOB[1]);"); - data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes);", - "stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes[0], M16zeroes[1]);"); - data = data.Replace("stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits);", - "stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits[0], fillBits[1]);"); - data = data.Replace("stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1]]);", - "stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1], 0], HTAC[(nrzeroes << 4) + bits[1], 1]);"); - - data = data.Replace("s.func(s.context, (void *)(head0), (int)(sizeof((head0))));", - "fixed (byte* h = head0) { s.func(s.context, h, head0.Length); }"); - data = data.Replace("(int)(sizeof((YTable)))", "64"); - data = data.Replace("(int)(sizeof((UVTable)))", "64"); - data = data.Replace("(int)(sizeof((head1)))", "24"); - data = data.Replace("s.func(s.context, (void *)(std_dc_luminance_nrcodes + 1), (int)(sizeof((std_dc_luminance_nrcodes)) - 1));", - "fixed (byte* d = &std_dc_luminance_nrcodes[1]) { s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); }"); - data = data.Replace("s.func(s.context, (void *)(std_dc_luminance_values), (int)(sizeof((std_dc_luminance_values))));", - "fixed (byte* d = std_dc_luminance_values) { s.func(s.context, d, std_dc_chrominance_values.Length); }"); - - data = data.Replace("s.func(s.context, (void *)(std_ac_luminance_nrcodes + 1), (int)(sizeof((std_ac_luminance_nrcodes)) - 1));", - "fixed (byte* a = &std_ac_luminance_nrcodes[1]) { s.func(s.context, a, std_ac_luminance_nrcodes.Length - 1); }"); - data = data.Replace("s.func(s.context, (void *)(std_ac_luminance_values), (int)(sizeof((std_ac_luminance_values))));", - "fixed (byte* d = std_ac_luminance_values) { s.func(s.context, d, std_ac_chrominance_values.Length); }"); - - data = data.Replace("s.func(s.context, (void *)(std_dc_chrominance_nrcodes + 1), (int)(sizeof((std_dc_chrominance_nrcodes)) - 1));", - "fixed (byte* d = &std_dc_chrominance_nrcodes[1]) { s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); }"); - data = data.Replace("s.func(s.context, (void *)(std_dc_chrominance_values), (int)(sizeof((std_dc_chrominance_values))));", - "fixed (byte* d = std_dc_chrominance_values) { s.func(s.context, d, std_dc_chrominance_values.Length); }"); - - data = data.Replace("s.func(s.context, (void *)(std_ac_chrominance_nrcodes + 1), (int)(sizeof((std_ac_chrominance_nrcodes)) - 1));", - "fixed (byte* a = &std_ac_chrominance_nrcodes[1]) { s.func(s.context, a, std_ac_chrominance_nrcodes.Length - 1); }"); - data = data.Replace("s.func(s.context, (void *)(std_ac_chrominance_values), (int)(sizeof((std_ac_chrominance_values))));", - "fixed (byte* d = std_ac_chrominance_values) { s.func(s.context, d, std_ac_chrominance_values.Length); }"); - - data = data.Replace("s.func(s.context, (void *)(head2), (int)(sizeof((head2))));", - "fixed (byte* h = head2) { s.func(s.context, h, head2.Length); }"); + var keys = (from string k in input.Keys orderby k select k).ToArray(); + var result = string.Empty; + foreach (var key in keys) + { + using (var sw = new StringWriter()) + { + input[key].NormalizeWhitespace().WriteTo(sw); - return data; - } - + result += sw.ToString(); + result += Environment.NewLine; + } + + } + + return result; + } static void Process() { - var parameters = new ConversionParameters + var parameters = new RoslynConversionParameters { InputPath = @"stb_image_write.h", Defines = new[] { - "STBI_WRITE_NO_STDIO", "STB_IMAGE_WRITE_IMPLEMENTATION", "STB_IMAGE_WRITE_STATIC" }, - Namespace = "StbImageWriteSharp", - Class = "StbImageWrite", - SkipStructs = new[] + SkipStructs = new string[] { - "stbi__write_context" }, - SkipGlobalVariables = new[] + SkipGlobalVariables = new string[] { - "stbi_write_tga_with_rle" }, SkipFunctions = new[] { - "stbi__start_write_callbacks", "stbiw__writefv", "stbiw__writef", "stbiw__outfile", - "stbi_write_bmp_to_func", - "stbi_write_tga_to_func", - "stbi_write_hdr_to_func", - "stbi_write_png_to_func", - "stbi_write_jpg_to_func", - "stbi_write_hdr_core", }, - Classes = new[] + Classes = new string[] { - "stbi__write_context" }, - GlobalArrays = new[] - { - "lengthc", - "lengtheb", - "distc", - "disteb", - "crc_table", - "stbiw__jpg_ZigZag", - "std_dc_luminance_nrcodes", - "std_dc_luminance_values", - "std_ac_luminance_nrcodes", - "std_ac_luminance_values", - "std_dc_chrominance_nrcodes", - "std_dc_chrominance_values", - "std_ac_chrominance_nrcodes", - "std_ac_chrominance_values", - "std_dc_chrominance_nrcodes", - "std_dc_chrominance_values", - "YDC_HT", - "UVDC_HT", - "YAC_HT", - "UVAC_HT", - "YQT", - "UVQT", - "aasf", - "head0", - "head2" - } }; - var cp = new ClangParser(); - - var result = cp.Process(parameters); + var result = RoslynCodeConverter.Convert(parameters); // Write output var sb = new StringBuilder(); @@ -185,20 +71,19 @@ static void Process() sb.Append("namespace StbImageWriteSharp\n{\n\t"); sb.AppendLine("unsafe partial class StbImageWrite\n\t{"); - Write(result.Constants, sb); - Write(result.GlobalVariables, sb); - Write(result.Enums, sb); - Write(result.Structs, sb); - Write(result.Methods, sb); + sb.Append(Write(result.NamedEnums)); + sb.Append(Write(result.UnnamedEnumValues)); + sb.Append(Write(result.GlobalVariables)); + sb.Append(Write(result.Delegates)); + sb.Append(Write(result.Structs)); + sb.Append(Write(result.Functions)); sb.Append("}\n}"); var data = sb.ToString(); // Post processing - Logger.Info("Post processing..."); - data = PostProcess(data); - File.WriteAllText(@"..\..\..\..\..\src\StbImageWrite.Generated.cs", data); + File.WriteAllText(@"..\..\..\..\..\..\src\StbImageWrite.Generated.cs", data); } static void Main(string[] args) diff --git a/generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs b/generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs deleted file mode 100644 index 48cf2be..0000000 --- a/generation/StbImageWriteSharp.Generator/Properties/AssemblyInfo.cs +++ /dev/null @@ -1,36 +0,0 @@ -using System.Reflection; -using System.Runtime.CompilerServices; -using System.Runtime.InteropServices; - -// General Information about an assembly is controlled through the following -// set of attributes. Change these attribute values to modify the information -// associated with an assembly. -[assembly: AssemblyTitle("Generator")] -[assembly: AssemblyDescription("")] -[assembly: AssemblyConfiguration("")] -[assembly: AssemblyCompany("")] -[assembly: AssemblyProduct("Generator")] -[assembly: AssemblyCopyright("Copyright © 2016")] -[assembly: AssemblyTrademark("")] -[assembly: AssemblyCulture("")] - -// Setting ComVisible to false makes the types in this assembly not visible -// to COM components. If you need to access a type in this assembly from -// COM, set the ComVisible attribute to true on that type. -[assembly: ComVisible(false)] - -// The following GUID is for the ID of the typelib if this project is exposed to COM -[assembly: Guid("f1343b90-bd64-48d3-9cd2-e1d954dc3da4")] - -// Version information for an assembly consists of the following four values: -// -// Major Version -// Minor Version -// Build Number -// Revision -// -// You can specify all the values or you can default the Build and Revision Numbers -// by using the '*' as shown below: -// [assembly: AssemblyVersion("1.0.*")] -[assembly: AssemblyVersion("1.0.0.0")] -[assembly: AssemblyFileVersion("1.0.0.0")] diff --git a/generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj b/generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj index d6bb662..db1a595 100644 --- a/generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj +++ b/generation/StbImageWriteSharp.Generator/StbImageWriteSharp.Generator.csproj @@ -1,70 +1,22 @@ - - - + + - Debug - AnyCPU - {2F372A46-2B31-49ED-BEAA-B7D6E72CD983} Exe - Properties - StbImageWrite.Generator - StbImageWrite.Generator - v4.5 - 512 - ccc2377f + net5.0 + win-x64 - - true - bin\x64\Debug\ - DEBUG;TRACE - full - x64 - prompt - MinimumRecommendedRules.ruleset - - - bin\x64\Release\ - TRACE - true - pdbonly - x64 - prompt - MinimumRecommendedRules.ruleset - true - - - - - - - - - - - - - - + - + + - + + PreserveNewest + + PreserveNewest - - - {71352218-91c4-490e-a650-ab17c48d0300} - Sichem - - - - - \ No newline at end of file + + diff --git a/generation/StbImageWriteSharp.Generator/stb_image_write.h b/generation/StbImageWriteSharp.Generator/stb_image_write.h index 71db70b..02d062a 100644 --- a/generation/StbImageWriteSharp.Generator/stb_image_write.h +++ b/generation/StbImageWriteSharp.Generator/stb_image_write.h @@ -1,4 +1,4 @@ -/* stb_image_write - v1.13 - public domain - http://nothings.org/stb/stb_image_write.h +/* stb_image_write - v1.16 - public domain - http://nothings.org/stb writes out PNG/BMP/TGA/JPEG/HDR images to C stdio - Sean Barrett 2010-2015 no warranty implied; use at your own risk @@ -105,7 +105,7 @@ TGA supports RLE or non-RLE compressed data. To use non-RLE-compressed data, set the global variable 'stbi_write_tga_with_rle' to 0. - + JPEG does ignore alpha channels in input data; quality is between 1 and 100. Higher quality looks better but results in a bigger image. JPEG baseline (no JPEG progressive). @@ -113,7 +113,7 @@ CREDITS: - Sean Barrett - PNG/BMP/TGA + Sean Barrett - PNG/BMP/TGA Baldur Karlsson - HDR Jean-Sebastien Guay - TGA monochrome Tim Kelsey - misc enhancements @@ -140,6 +140,7 @@ Ivan Tikhonov github:ignotion Adam Schackart + Andrew Kensler LICENSE @@ -166,9 +167,9 @@ LICENSE #endif #ifndef STB_IMAGE_WRITE_STATIC // C++ forbids static forward declarations -extern int stbi_write_tga_with_rle; -extern int stbi_write_png_compression_level; -extern int stbi_write_force_png_filter; +STBIWDEF int stbi_write_tga_with_rle; +STBIWDEF int stbi_write_png_compression_level; +STBIWDEF int stbi_write_force_png_filter; #endif #ifndef STBI_WRITE_NO_STDIO @@ -178,7 +179,7 @@ STBIWDEF int stbi_write_tga(char const *filename, int w, int h, int comp, const STBIWDEF int stbi_write_hdr(char const *filename, int w, int h, int comp, const float *data); STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const void *data, int quality); -#ifdef STBI_WINDOWS_UTF8 +#ifdef STBIW_WINDOWS_UTF8 STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input); #endif #endif @@ -247,17 +248,17 @@ STBIWDEF void stbi_flip_vertically_on_write(int flip_boolean); #define STBIW_UCHAR(x) (unsigned char) ((x) & 0xff) #ifdef STB_IMAGE_WRITE_STATIC -static int stbi__flip_vertically_on_write=0; static int stbi_write_png_compression_level = 8; static int stbi_write_tga_with_rle = 1; static int stbi_write_force_png_filter = -1; #else int stbi_write_png_compression_level = 8; -int stbi__flip_vertically_on_write=0; int stbi_write_tga_with_rle = 1; int stbi_write_force_png_filter = -1; #endif +static int stbi__flip_vertically_on_write = 0; + STBIWDEF void stbi_flip_vertically_on_write(int flag) { stbi__flip_vertically_on_write = flag; @@ -267,6 +268,8 @@ typedef struct { stbi_write_func *func; void *context; + unsigned char buffer[64]; + int buf_used; } stbi__write_context; // initialize a callback-based context @@ -283,7 +286,7 @@ static void stbi__stdio_write(void *context, void *data, int size) fwrite(data,1,size,(FILE*) context); } -#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) +#if defined(_WIN32) && defined(STBIW_WINDOWS_UTF8) #ifdef __cplusplus #define STBIW_EXTERN extern "C" #else @@ -294,25 +297,25 @@ STBIW_EXTERN __declspec(dllimport) int __stdcall WideCharToMultiByte(unsigned in STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input) { - return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, (int) bufferlen, NULL, NULL); + return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, (int) bufferlen, NULL, NULL); } #endif static FILE *stbiw__fopen(char const *filename, char const *mode) { FILE *f; -#if defined(_MSC_VER) && defined(STBI_WINDOWS_UTF8) +#if defined(_WIN32) && defined(STBIW_WINDOWS_UTF8) wchar_t wMode[64]; wchar_t wFilename[1024]; - if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, filename, -1, wFilename, sizeof(wFilename))) + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, filename, -1, wFilename, sizeof(wFilename)/sizeof(*wFilename))) return 0; - - if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, mode, -1, wMode, sizeof(wMode))) + + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, mode, -1, wMode, sizeof(wMode)/sizeof(*wMode))) return 0; -#if _MSC_VER >= 1400 - if (0 != _wfopen_s(&f, wFilename, wMode)) - f = 0; +#if defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != _wfopen_s(&f, wFilename, wMode)) + f = 0; #else f = _wfopen(wFilename, wMode); #endif @@ -380,16 +383,36 @@ static void stbiw__writef(stbi__write_context *s, const char *fmt, ...) va_end(v); } +static void stbiw__write_flush(stbi__write_context *s) +{ + if (s->buf_used) { + s->func(s->context, &s->buffer, s->buf_used); + s->buf_used = 0; + } +} + static void stbiw__putc(stbi__write_context *s, unsigned char c) { s->func(s->context, &c, 1); } +static void stbiw__write1(stbi__write_context *s, unsigned char a) +{ + if ((size_t)s->buf_used + 1 > sizeof(s->buffer)) + stbiw__write_flush(s); + s->buffer[s->buf_used++] = a; +} + static void stbiw__write3(stbi__write_context *s, unsigned char a, unsigned char b, unsigned char c) { - unsigned char arr[3]; - arr[0] = a; arr[1] = b; arr[2] = c; - s->func(s->context, arr, 3); + int n; + if ((size_t)s->buf_used + 3 > sizeof(s->buffer)) + stbiw__write_flush(s); + n = s->buf_used; + s->buf_used = n+3; + s->buffer[n+0] = a; + s->buffer[n+1] = b; + s->buffer[n+2] = c; } static void stbiw__write_pixel(stbi__write_context *s, int rgb_dir, int comp, int write_alpha, int expand_mono, unsigned char *d) @@ -398,7 +421,7 @@ static void stbiw__write_pixel(stbi__write_context *s, int rgb_dir, int comp, in int k; if (write_alpha < 0) - s->func(s->context, &d[comp - 1], 1); + stbiw__write1(s, d[comp - 1]); switch (comp) { case 2: // 2 pixels = mono + alpha, alpha is written separately, so same as 1-channel case @@ -406,11 +429,10 @@ static void stbiw__write_pixel(stbi__write_context *s, int rgb_dir, int comp, in if (expand_mono) stbiw__write3(s, d[0], d[0], d[0]); // monochrome bmp else - s->func(s->context, d, 1); // monochrome TGA + stbiw__write1(s, d[0]); // monochrome TGA break; - case 3: case 4: - if (comp == 4 && !write_alpha) { + if (!write_alpha) { // composite against pink background for (k = 0; k < 3; ++k) px[k] = bg[k] + ((d[k] - bg[k]) * d[3]) / 255; @@ -418,11 +440,12 @@ static void stbiw__write_pixel(stbi__write_context *s, int rgb_dir, int comp, in break; } /* FALLTHROUGH */ + case 3: stbiw__write3(s, d[1 - rgb_dir], d[1], d[1 + rgb_dir]); break; } if (write_alpha > 0) - s->func(s->context, &d[comp - 1], 1); + stbiw__write1(s, d[comp - 1]); } static void stbiw__write_pixels(stbi__write_context *s, int rgb_dir, int vdir, int x, int y, int comp, void *data, int write_alpha, int scanline_pad, int expand_mono) @@ -447,6 +470,7 @@ static void stbiw__write_pixels(stbi__write_context *s, int rgb_dir, int vdir, i unsigned char *d = (unsigned char *) data + (j*x+i)*comp; stbiw__write_pixel(s, rgb_dir, comp, write_alpha, expand_mono, d); } + stbiw__write_flush(s); s->func(s->context, &zero, scanline_pad); } } @@ -467,16 +491,27 @@ static int stbiw__outfile(stbi__write_context *s, int rgb_dir, int vdir, int x, static int stbi_write_bmp_core(stbi__write_context *s, int x, int y, int comp, const void *data) { - int pad = (-x*3) & 3; - return stbiw__outfile(s,-1,-1,x,y,comp,1,(void *) data,0,pad, - "11 4 22 4" "4 44 22 444444", - 'B', 'M', 14+40+(x*3+pad)*y, 0,0, 14+40, // file header - 40, x,y, 1,24, 0,0,0,0,0,0); // bitmap header + if (comp != 4) { + // write RGB bitmap + int pad = (-x*3) & 3; + return stbiw__outfile(s,-1,-1,x,y,comp,1,(void *) data,0,pad, + "11 4 22 4" "4 44 22 444444", + 'B', 'M', 14+40+(x*3+pad)*y, 0,0, 14+40, // file header + 40, x,y, 1,24, 0,0,0,0,0,0); // bitmap header + } else { + // RGBA bitmaps need a v4 header + // use BI_BITFIELDS mode with 32bpp and alpha mask + // (straight BI_RGB with alpha mask doesn't work in most readers) + return stbiw__outfile(s,-1,-1,x,y,comp,1,(void *)data,1,0, + "11 4 22 4" "4 44 22 444444 4444 4 444 444 444 444", + 'B', 'M', 14+108+x*y*4, 0, 0, 14+108, // file header + 108, x,y, 1,32, 3,0,0,0,0,0, 0xff0000,0xff00,0xff,0xff000000u, 0, 0,0,0, 0,0,0, 0,0,0, 0,0,0); // bitmap V4 header + } } STBIWDEF int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data) { - stbi__write_context s; + stbi__write_context s = { 0 }; stbi__start_write_callbacks(&s, func, context); return stbi_write_bmp_core(&s, x, y, comp, data); } @@ -484,7 +519,7 @@ STBIWDEF int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int x, #ifndef STBI_WRITE_NO_STDIO STBIWDEF int stbi_write_bmp(char const *filename, int x, int y, int comp, const void *data) { - stbi__write_context s; + stbi__write_context s = { 0 }; if (stbi__start_write_file(&s,filename)) { int r = stbi_write_bmp_core(&s, x, y, comp, data); stbi__end_write_file(&s); @@ -557,24 +592,25 @@ static int stbi_write_tga_core(stbi__write_context *s, int x, int y, int comp, v if (diff) { unsigned char header = STBIW_UCHAR(len - 1); - s->func(s->context, &header, 1); + stbiw__write1(s, header); for (k = 0; k < len; ++k) { stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin + k * comp); } } else { unsigned char header = STBIW_UCHAR(len - 129); - s->func(s->context, &header, 1); + stbiw__write1(s, header); stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin); } } } + stbiw__write_flush(s); } return 1; } STBIWDEF int stbi_write_tga_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data) { - stbi__write_context s; + stbi__write_context s = { 0 }; stbi__start_write_callbacks(&s, func, context); return stbi_write_tga_core(&s, x, y, comp, (void *) data); } @@ -582,7 +618,7 @@ STBIWDEF int stbi_write_tga_to_func(stbi_write_func *func, void *context, int x, #ifndef STBI_WRITE_NO_STDIO STBIWDEF int stbi_write_tga(char const *filename, int x, int y, int comp, const void *data) { - stbi__write_context s; + stbi__write_context s = { 0 }; if (stbi__start_write_file(&s,filename)) { int r = stbi_write_tga_core(&s, x, y, comp, (void *) data); stbi__end_write_file(&s); @@ -598,6 +634,8 @@ STBIWDEF int stbi_write_tga(char const *filename, int x, int y, int comp, const #define stbiw__max(a, b) ((a) > (b) ? (a) : (b)) +#ifndef STBI_WRITE_NO_STDIO + static void stbiw__linear_to_rgbe(unsigned char *rgbe, float *linear) { int exponent; @@ -732,7 +770,7 @@ static int stbi_write_hdr_core(stbi__write_context *s, int x, int y, int comp, f char header[] = "#?RADIANCE\n# Written by stb_image_write.h\nFORMAT=32-bit_rle_rgbe\n"; s->func(s->context, header, sizeof(header)-1); -#ifdef __STDC_WANT_SECURE_LIB__ +#ifdef __STDC_LIB_EXT1__ len = sprintf_s(buffer, sizeof(buffer), "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x); #else len = sprintf(buffer, "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x); @@ -748,15 +786,14 @@ static int stbi_write_hdr_core(stbi__write_context *s, int x, int y, int comp, f STBIWDEF int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const float *data) { - stbi__write_context s; + stbi__write_context s = { 0 }; stbi__start_write_callbacks(&s, func, context); return stbi_write_hdr_core(&s, x, y, comp, (float *) data); } -#ifndef STBI_WRITE_NO_STDIO STBIWDEF int stbi_write_hdr(char const *filename, int x, int y, int comp, const float *data) { - stbi__write_context s; + stbi__write_context s = { 0 }; if (stbi__start_write_file(&s,filename)) { int r = stbi_write_hdr_core(&s, x, y, comp, (float *) data); stbi__end_write_file(&s); @@ -854,21 +891,20 @@ static unsigned int stbiw__zhash(unsigned char *data) #endif // STBIW_ZLIB_COMPRESS -static unsigned short lengthc[] = { 3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258, 259 }; -static unsigned char lengtheb[] = { 0,0,0,0,0,0,0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0 }; -static unsigned short distc[] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577, 32768 }; -static unsigned char disteb[] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13 }; - STBIWDEF unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, int *out_len, int quality) { #ifdef STBIW_ZLIB_COMPRESS // user provided a zlib compress implementation, use that return STBIW_ZLIB_COMPRESS(data, data_len, out_len, quality); #else // use builtin + static unsigned short lengthc[] = { 3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258, 259 }; + static unsigned char lengtheb[]= { 0,0,0,0,0,0,0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0 }; + static unsigned short distc[] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577, 32768 }; + static unsigned char disteb[] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13 }; unsigned int bitbuf=0; int i,j, bitcount=0; unsigned char *out = NULL; - unsigned char ***hash_table = (unsigned char***) STBIW_MALLOC(stbiw__ZHASH * sizeof(char**)); + unsigned char ***hash_table = (unsigned char***) STBIW_MALLOC(stbiw__ZHASH * sizeof(unsigned char**)); if (hash_table == NULL) return NULL; if (quality < 5) quality = 5; @@ -944,6 +980,23 @@ STBIWDEF unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, i stbiw__sbfree(hash_table[i]); STBIW_FREE(hash_table); + // store uncompressed instead if compression was worse + if (stbiw__sbn(out) > data_len + 2 + ((data_len+32766)/32767)*5) { + stbiw__sbn(out) = 2; // truncate to DEFLATE 32K window and FLEVEL = 1 + for (j = 0; j < data_len;) { + int blocklen = data_len - j; + if (blocklen > 32767) blocklen = 32767; + stbiw__sbpush(out, data_len - j == blocklen); // BFINAL = ?, BTYPE = 0 -- no compression + stbiw__sbpush(out, STBIW_UCHAR(blocklen)); // LEN + stbiw__sbpush(out, STBIW_UCHAR(blocklen >> 8)); + stbiw__sbpush(out, STBIW_UCHAR(~blocklen)); // NLEN + stbiw__sbpush(out, STBIW_UCHAR(~blocklen >> 8)); + memcpy(out+stbiw__sbn(out), data+j, blocklen); + stbiw__sbn(out) += blocklen; + j += blocklen; + } + } + { // compute adler32 on input unsigned int s1=1, s2=0; @@ -967,47 +1020,47 @@ STBIWDEF unsigned char * stbi_zlib_compress(unsigned char *data, int data_len, i #endif // STBIW_ZLIB_COMPRESS } -static unsigned int crc_table[256] = -{ - 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, - 0x0eDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, - 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, - 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, - 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, - 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, - 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, - 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, - 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, - 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, - 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, - 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, - 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, - 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, - 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, - 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, - 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, - 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, - 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, - 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, - 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, - 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, - 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, - 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, - 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, - 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, - 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, - 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, - 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, - 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, - 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, - 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D -}; - static unsigned int stbiw__crc32(unsigned char *buffer, int len) { #ifdef STBIW_CRC32 return STBIW_CRC32(buffer, len); #else + static unsigned int crc_table[256] = + { + 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, + 0x0eDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, + 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, + 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, + 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, + 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, + 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, + 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, + 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, + 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, + 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, + 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, + 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, + 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, + 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, + 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, + 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, + 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, + 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, + 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, + 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, + 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, + 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, + 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, + 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, + 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, + 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, + 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, + 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, + 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, + 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, + 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D + }; + unsigned int crc = ~0u; int i; for (i=0; i < len; ++i) @@ -1044,13 +1097,13 @@ static void stbiw__encode_png_line(unsigned char *pixels, int stride_bytes, int int type = mymap[filter_type]; unsigned char *z = pixels + stride_bytes * (stbi__flip_vertically_on_write ? height-1-y : y); int signed_stride = stbi__flip_vertically_on_write ? -stride_bytes : stride_bytes; - + if (type==0) { memcpy(line_buffer, z, width*n); return; } - // first loop isn't optimized since it's just one pixel + // first loop isn't optimized since it's just one pixel for (i = 0; i < n; ++i) { switch (type) { case 1: line_buffer[i] = z[i]; break; @@ -1271,26 +1324,31 @@ static void stbiw__jpg_calcBits(int val, unsigned short bits[2]) { bits[0] = val & ((1< 100 ? 100 : quality; quality = quality < 50 ? 5000 / quality : 200 - quality * 2; @@ -1440,8 +1495,10 @@ static int stbi_write_jpg_core(stbi__write_context *s, int width, int height, in // Write Headers { + static const unsigned char head0[] = { 0xFF,0xD8,0xFF,0xE0,0,0x10,'J','F','I','F',0,1,1,0,0,1,0,1,0,0,0xFF,0xDB,0,0x84,0 }; + static const unsigned char head2[] = { 0xFF,0xDA,0,0xC,3,1,0,2,0x11,3,0x11,0,0x3F,0 }; const unsigned char head1[] = { 0xFF,0xC0,0,0x11,8,(unsigned char)(height>>8),STBIW_UCHAR(height),(unsigned char)(width>>8),STBIW_UCHAR(width), - 3,1,0x11,0,2,0x11,1,3,0x11,1,0xFF,0xC4,0x01,0xA2,0 }; + 3,1,(unsigned char)(subsample?0x22:0x11),0,2,0x11,1,3,0x11,1,0xFF,0xC4,0x01,0xA2,0 }; s->func(s->context, (void*)head0, sizeof(head0)); s->func(s->context, (void*)YTable, sizeof(YTable)); stbiw__putc(s, 1); @@ -1464,36 +1521,74 @@ static int stbi_write_jpg_core(stbi__write_context *s, int width, int height, in // Encode 8x8 macroblocks { static const unsigned short fillBits[] = {0x7F, 7}; - const unsigned char *imageData = (const unsigned char *)data; int DCY=0, DCU=0, DCV=0; int bitBuf=0, bitCnt=0; // comp == 2 is grey+alpha (alpha is ignored) int ofsG = comp > 2 ? 1 : 0, ofsB = comp > 2 ? 2 : 0; + const unsigned char *dataR = (const unsigned char *)data; + const unsigned char *dataG = dataR + ofsG; + const unsigned char *dataB = dataR + ofsB; int x, y, pos; - for(y = 0; y < height; y += 8) { - for(x = 0; x < width; x += 8) { - float YDU[64], UDU[64], VDU[64]; - for(row = y, pos = 0; row < y+8; ++row) { - // row >= height => use last input row - int clamped_row = (row < height) ? row : height - 1; - int base_p = (stbi__flip_vertically_on_write ? (height-1-clamped_row) : clamped_row)*width*comp; - for(col = x; col < x+8; ++col, ++pos) { - float r, g, b; - // if col >= width => use pixel from last input column - int p = base_p + ((col < width) ? col : (width-1))*comp; - - r = imageData[p+0]; - g = imageData[p+ofsG]; - b = imageData[p+ofsB]; - YDU[pos]=+0.29900f*r+0.58700f*g+0.11400f*b-128; - UDU[pos]=-0.16874f*r-0.33126f*g+0.50000f*b; - VDU[pos]=+0.50000f*r-0.41869f*g-0.08131f*b; + if(subsample) { + for(y = 0; y < height; y += 16) { + for(x = 0; x < width; x += 16) { + float Y[256], U[256], V[256]; + for(row = y, pos = 0; row < y+16; ++row) { + // row >= height => use last input row + int clamped_row = (row < height) ? row : height - 1; + int base_p = (stbi__flip_vertically_on_write ? (height-1-clamped_row) : clamped_row)*width*comp; + for(col = x; col < x+16; ++col, ++pos) { + // if col >= width => use pixel from last input column + int p = base_p + ((col < width) ? col : (width-1))*comp; + float r = dataR[p], g = dataG[p], b = dataB[p]; + Y[pos]= +0.29900f*r + 0.58700f*g + 0.11400f*b - 128; + U[pos]= -0.16874f*r - 0.33126f*g + 0.50000f*b; + V[pos]= +0.50000f*r - 0.41869f*g - 0.08131f*b; + } + } + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y+0, 16, fdtbl_Y, DCY, YDC_HT, YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y+8, 16, fdtbl_Y, DCY, YDC_HT, YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y+128, 16, fdtbl_Y, DCY, YDC_HT, YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y+136, 16, fdtbl_Y, DCY, YDC_HT, YAC_HT); + + // subsample U,V + { + float subU[64], subV[64]; + int yy, xx; + for(yy = 0, pos = 0; yy < 8; ++yy) { + for(xx = 0; xx < 8; ++xx, ++pos) { + int j = yy*32+xx*2; + subU[pos] = (U[j+0] + U[j+1] + U[j+16] + U[j+17]) * 0.25f; + subV[pos] = (V[j+0] + V[j+1] + V[j+16] + V[j+17]) * 0.25f; + } + } + DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subU, 8, fdtbl_UV, DCU, UVDC_HT, UVAC_HT); + DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subV, 8, fdtbl_UV, DCV, UVDC_HT, UVAC_HT); } } + } + } else { + for(y = 0; y < height; y += 8) { + for(x = 0; x < width; x += 8) { + float Y[64], U[64], V[64]; + for(row = y, pos = 0; row < y+8; ++row) { + // row >= height => use last input row + int clamped_row = (row < height) ? row : height - 1; + int base_p = (stbi__flip_vertically_on_write ? (height-1-clamped_row) : clamped_row)*width*comp; + for(col = x; col < x+8; ++col, ++pos) { + // if col >= width => use pixel from last input column + int p = base_p + ((col < width) ? col : (width-1))*comp; + float r = dataR[p], g = dataG[p], b = dataB[p]; + Y[pos]= +0.29900f*r + 0.58700f*g + 0.11400f*b - 128; + U[pos]= -0.16874f*r - 0.33126f*g + 0.50000f*b; + V[pos]= +0.50000f*r - 0.41869f*g - 0.08131f*b; + } + } - DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, YDU, fdtbl_Y, DCY, YDC_HT, YAC_HT); - DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, UDU, fdtbl_UV, DCU, UVDC_HT, UVAC_HT); - DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, VDU, fdtbl_UV, DCV, UVDC_HT, UVAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y, 8, fdtbl_Y, DCY, YDC_HT, YAC_HT); + DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, U, 8, fdtbl_UV, DCU, UVDC_HT, UVAC_HT); + DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, V, 8, fdtbl_UV, DCV, UVDC_HT, UVAC_HT); + } } } @@ -1510,7 +1605,7 @@ static int stbi_write_jpg_core(stbi__write_context *s, int width, int height, in STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, int y, int comp, const void *data, int quality) { - stbi__write_context s; + stbi__write_context s = { 0 }; stbi__start_write_callbacks(&s, func, context); return stbi_write_jpg_core(&s, x, y, comp, (void *) data, quality); } @@ -1519,7 +1614,7 @@ STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, #ifndef STBI_WRITE_NO_STDIO STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const void *data, int quality) { - stbi__write_context s; + stbi__write_context s = { 0 }; if (stbi__start_write_file(&s,filename)) { int r = stbi_write_jpg_core(&s, x, y, comp, data, quality); stbi__end_write_file(&s); @@ -1532,8 +1627,17 @@ STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const #endif // STB_IMAGE_WRITE_IMPLEMENTATION /* Revision history + 1.16 (2021-07-11) + make Deflate code emit uncompressed blocks when it would otherwise expand + support writing BMPs with alpha channel + 1.15 (2020-07-13) unknown + 1.14 (2020-02-02) updated JPEG writer to downsample chroma channels + 1.13 + 1.12 + 1.11 (2019-08-11) + 1.10 (2019-02-07) - support utf8 filenames in Windows; fix warnings and platform ifdefs + support utf8 filenames in Windows; fix warnings and platform ifdefs 1.09 (2018-02-11) fix typo in zlib quality API, improve STB_I_W_STATIC in C++ 1.08 (2018-01-29) @@ -1564,7 +1668,7 @@ STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, const add HDR output fix monochrome BMP 0.95 (2014-08-17) - add monochrome TGA output + add monochrome TGA output 0.94 (2014-05-31) rename private functions to avoid conflicts with stb_image.h 0.93 (2014-05-27) @@ -1582,38 +1686,38 @@ This software is available under 2 licenses -- choose whichever you prefer. ------------------------------------------------------------------------------ ALTERNATIVE A - MIT License Copyright (c) 2017 Sean Barrett -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files (the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies -of the Software, and to permit persons to whom the Software is furnished to do +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: -The above copyright notice and this permission notice shall be included in all +The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ------------------------------------------------------------------------------ ALTERNATIVE B - Public Domain (www.unlicense.org) This is free and unencumbered software released into the public domain. -Anyone is free to copy, modify, publish, use, compile, sell, or distribute this -software, either in source code form or as a compiled binary, for any purpose, +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means. -In jurisdictions that recognize copyright laws, the author or authors of this -software dedicate any and all copyright interest in the software to the public -domain. We make this dedication for the benefit of the public at large and to -the detriment of our heirs and successors. We intend this dedication to be an -overt act of relinquishment in perpetuity of all present and future rights to +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN -ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ------------------------------------------------------------------------------ */ diff --git a/src/ImageWriter.cs b/src/ImageWriter.cs index 4cd3b86..3a03de3 100644 --- a/src/ImageWriter.cs +++ b/src/ImageWriter.cs @@ -14,11 +14,11 @@ unsafe class ImageWriter private Stream _stream; private byte[] _buffer = new byte[1024]; - private int WriteCallback(void* context, void* data, int size) + private void WriteCallback(void* context, void* data, int size) { if (data == null || size <= 0) { - return 0; + return; } if (_buffer.Length < size) @@ -31,8 +31,6 @@ private int WriteCallback(void* context, void* data, int size) Marshal.Copy(new IntPtr(bptr), _buffer, 0, size); _stream.Write(_buffer, 0, size); - - return size; } private void CheckParams(byte[] data, int width, int height, ColorComponents components) diff --git a/src/StbImageWrite.Generated.cs b/src/StbImageWrite.Generated.cs index 27a8e82..f83a6ea 100644 --- a/src/StbImageWrite.Generated.cs +++ b/src/StbImageWrite.Generated.cs @@ -1,78 +1,49 @@ -namespace StbImageWriteSharp +// Generated by Sichem at 1/4/2022 10:31:08 AM + +using Hebron.Runtime; + +namespace StbImageWriteSharp { unsafe partial class StbImageWrite { - public static int stbi__flip_vertically_on_write; - - public static int stbi_write_png_compression_level = 8; + public delegate void delegate0(void* arg0, void* arg1, int arg2); + public static int stbi__flip_vertically_on_write; public static int stbi_write_force_png_filter = -1; - public static ushort[] lengthc = + public static float[] stbi_write_jpg_core_aasf = { - 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, - 227, 258, 259 + 1.0f * 2.828427125f, 1.387039845f * 2.828427125f, 1.306562965f * 2.828427125f, 1.175875602f * 2.828427125f, + 1.0f * 2.828427125f, 0.785694958f * 2.828427125f, 0.541196100f * 2.828427125f, 0.275899379f * 2.828427125f }; - public static byte[] lengtheb = - {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0}; + public static ushort[] stbi_write_jpg_core_fillBits = { 0x7F, 7 }; - public static ushort[] distc = - { - 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, - 6145, 8193, 12289, 16385, 24577, 32768 - }; + public static byte[] stbi_write_jpg_core_head0 = + {0xFF, 0xD8, 0xFF, 0xE0, 0, 0x10, 74, 70, 73, 70, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0xFF, 0xDB, 0, 0x84, 0}; - public static byte[] disteb = - {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; + public static byte[] stbi_write_jpg_core_head2 = { 0xFF, 0xDA, 0, 0xC, 3, 1, 0, 2, 0x11, 3, 0x11, 0, 0x3F, 0 }; - public static uint[] crc_table = - { - 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, 0x0eDB8832, - 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, - 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0, 0xFD62F97A, - 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, - 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, - 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, - 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, - 0xB6662D3D, 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, - 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, 0x6B6B51F4, - 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, - 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 0x4DB26158, 0x3AB551CE, 0xA3BC0074, - 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, - 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, - 0x206F85B3, 0xB966D409, 0xCE61E49F, 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, - 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, - 0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, - 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, 0xFED41B76, - 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E, - 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, - 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, - 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, - 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, - 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, - 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, - 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, - 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, - 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 0xBDBDF21C, 0xCABAC28A, 0x53B39330, - 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, - 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D - }; + public static byte[] stbi_write_jpg_core_std_ac_chrominance_nrcodes = + {0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77}; - public static byte[] stbiw__jpg_ZigZag = + public static byte[] stbi_write_jpg_core_std_ac_chrominance_values = { - 0, 1, 5, 6, 14, 15, 27, 28, 2, 4, 7, 13, 16, 26, 29, 42, 3, 8, 12, 17, 25, 30, 41, 43, 9, 11, 18, 24, 31, - 40, 44, 53, 10, 19, 23, 32, 39, 45, 52, 54, 20, 22, 33, 38, 46, 51, 55, 60, 21, 34, 37, 47, 50, 56, 59, 61, - 35, 36, 48, 49, 57, 58, 62, 63 + 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22, + 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1, + 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, + 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, + 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, + 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, + 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, + 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, + 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa }; - public static byte[] std_dc_luminance_nrcodes = { 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 }; + public static byte[] stbi_write_jpg_core_std_ac_luminance_nrcodes = + {0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d}; - public static byte[] std_dc_luminance_values = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; - - public static byte[] std_ac_luminance_nrcodes = { 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d }; - - public static byte[] std_ac_luminance_values = + public static byte[] stbi_write_jpg_core_std_ac_luminance_values = { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, @@ -85,35 +56,61 @@ unsafe partial class StbImageWrite 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa }; - public static byte[] std_dc_chrominance_nrcodes = { 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 }; + public static byte[] stbi_write_jpg_core_std_dc_chrominance_nrcodes = + {0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0}; - public static byte[] std_dc_chrominance_values = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; + public static byte[] stbi_write_jpg_core_std_dc_chrominance_values = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; - public static byte[] std_ac_chrominance_nrcodes = { 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 }; + public static byte[] stbi_write_jpg_core_std_dc_luminance_nrcodes = + {0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0}; - public static byte[] std_ac_chrominance_values = + public static byte[] stbi_write_jpg_core_std_dc_luminance_values = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; + + public static ushort[,] stbi_write_jpg_core_UVAC_HT = { - 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22, - 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1, - 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, - 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, - 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, - 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, - 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, - 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, - 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa + {0, 2}, {1, 2}, {4, 3}, {10, 4}, {24, 5}, {25, 5}, {56, 6}, {120, 7}, {500, 9}, {1014, 10}, {4084, 12}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {11, 4}, {57, 6}, {246, 8}, {501, 9}, {2038, 11}, + {4085, 12}, {65416, 16}, {65417, 16}, {65418, 16}, {65419, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {26, 5}, {247, 8}, {1015, 10}, {4086, 12}, {32706, 15}, {65420, 16}, {65421, 16}, {65422, 16}, + {65423, 16}, {65424, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {27, 5}, {248, 8}, {1016, 10}, + {4087, 12}, {65425, 16}, {65426, 16}, {65427, 16}, {65428, 16}, {65429, 16}, {65430, 16}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {58, 6}, {502, 9}, {65431, 16}, {65432, 16}, {65433, 16}, {65434, 16}, + {65435, 16}, {65436, 16}, {65437, 16}, {65438, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {59, 6}, + {1017, 10}, {65439, 16}, {65440, 16}, {65441, 16}, {65442, 16}, {65443, 16}, {65444, 16}, {65445, 16}, + {65446, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {121, 7}, {2039, 11}, {65447, 16}, {65448, 16}, + {65449, 16}, {65450, 16}, {65451, 16}, {65452, 16}, {65453, 16}, {65454, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {122, 7}, {2040, 11}, {65455, 16}, {65456, 16}, {65457, 16}, {65458, 16}, + {65459, 16}, {65460, 16}, {65461, 16}, {65462, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {249, 8}, {65463, 16}, {65464, 16}, {65465, 16}, {65466, 16}, {65467, 16}, {65468, 16}, {65469, 16}, + {65470, 16}, {65471, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {503, 9}, {65472, 16}, + {65473, 16}, {65474, 16}, {65475, 16}, {65476, 16}, {65477, 16}, {65478, 16}, {65479, 16}, {65480, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {504, 9}, {65481, 16}, {65482, 16}, {65483, 16}, + {65484, 16}, {65485, 16}, {65486, 16}, {65487, 16}, {65488, 16}, {65489, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {505, 9}, {65490, 16}, {65491, 16}, {65492, 16}, {65493, 16}, {65494, 16}, + {65495, 16}, {65496, 16}, {65497, 16}, {65498, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {506, 9}, {65499, 16}, {65500, 16}, {65501, 16}, {65502, 16}, {65503, 16}, {65504, 16}, {65505, 16}, + {65506, 16}, {65507, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {2041, 11}, {65508, 16}, + {65509, 16}, {65510, 16}, {65511, 16}, {65512, 16}, {65513, 16}, {65514, 16}, {65515, 16}, {65516, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {16352, 14}, {65517, 16}, {65518, 16}, {65519, 16}, + {65520, 16}, {65521, 16}, {65522, 16}, {65523, 16}, {65524, 16}, {65525, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {1018, 10}, {32707, 15}, {65526, 16}, {65527, 16}, {65528, 16}, {65529, 16}, {65530, 16}, + {65531, 16}, {65532, 16}, {65533, 16}, {65534, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0} }; - public static ushort[,] YDC_HT = - {{0, 2}, {2, 3}, {3, 3}, {4, 3}, {5, 3}, {6, 3}, {14, 4}, {30, 5}, {62, 6}, {126, 7}, {254, 8}, {510, 9}}; - - public static ushort[,] UVDC_HT = + public static ushort[,] stbi_write_jpg_core_UVDC_HT = { {0, 2}, {1, 2}, {2, 2}, {6, 3}, {14, 4}, {30, 5}, {62, 6}, {126, 7}, {254, 8}, {510, 9}, {1022, 10}, {2046, 11} }; - public static ushort[,] YAC_HT = + public static int[] stbi_write_jpg_core_UVQT = + { + 17, 18, 24, 47, 99, 99, 99, 99, 18, 21, 26, 66, 99, 99, 99, 99, 24, 26, 56, 99, 99, 99, 99, 99, 47, 66, 99, + 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, + 99, 99, 99, 99, 99, 99, 99, 99, 99, 99 + }; + + public static ushort[,] stbi_write_jpg_core_YAC_HT = { {10, 4}, {0, 2}, {1, 2}, {4, 3}, {11, 4}, {26, 5}, {120, 7}, {248, 8}, {1014, 10}, {65410, 16}, {65411, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {12, 4}, {27, 5}, {121, 7}, {502, 9}, {2038, 11}, @@ -144,167 +141,512 @@ unsafe partial class StbImageWrite {65531, 16}, {65532, 16}, {65533, 16}, {65534, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0} }; - public static ushort[,] UVAC_HT = - { - {0, 2}, {1, 2}, {4, 3}, {10, 4}, {24, 5}, {25, 5}, {56, 6}, {120, 7}, {500, 9}, {1014, 10}, {4084, 12}, - {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {11, 4}, {57, 6}, {246, 8}, {501, 9}, {2038, 11}, - {4085, 12}, {65416, 16}, {65417, 16}, {65418, 16}, {65419, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, - {0, 0}, {26, 5}, {247, 8}, {1015, 10}, {4086, 12}, {32706, 15}, {65420, 16}, {65421, 16}, {65422, 16}, - {65423, 16}, {65424, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {27, 5}, {248, 8}, {1016, 10}, - {4087, 12}, {65425, 16}, {65426, 16}, {65427, 16}, {65428, 16}, {65429, 16}, {65430, 16}, {0, 0}, {0, 0}, - {0, 0}, {0, 0}, {0, 0}, {0, 0}, {58, 6}, {502, 9}, {65431, 16}, {65432, 16}, {65433, 16}, {65434, 16}, - {65435, 16}, {65436, 16}, {65437, 16}, {65438, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {59, 6}, - {1017, 10}, {65439, 16}, {65440, 16}, {65441, 16}, {65442, 16}, {65443, 16}, {65444, 16}, {65445, 16}, - {65446, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {121, 7}, {2039, 11}, {65447, 16}, {65448, 16}, - {65449, 16}, {65450, 16}, {65451, 16}, {65452, 16}, {65453, 16}, {65454, 16}, {0, 0}, {0, 0}, {0, 0}, - {0, 0}, {0, 0}, {0, 0}, {122, 7}, {2040, 11}, {65455, 16}, {65456, 16}, {65457, 16}, {65458, 16}, - {65459, 16}, {65460, 16}, {65461, 16}, {65462, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, - {249, 8}, {65463, 16}, {65464, 16}, {65465, 16}, {65466, 16}, {65467, 16}, {65468, 16}, {65469, 16}, - {65470, 16}, {65471, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {503, 9}, {65472, 16}, - {65473, 16}, {65474, 16}, {65475, 16}, {65476, 16}, {65477, 16}, {65478, 16}, {65479, 16}, {65480, 16}, - {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {504, 9}, {65481, 16}, {65482, 16}, {65483, 16}, - {65484, 16}, {65485, 16}, {65486, 16}, {65487, 16}, {65488, 16}, {65489, 16}, {0, 0}, {0, 0}, {0, 0}, - {0, 0}, {0, 0}, {0, 0}, {505, 9}, {65490, 16}, {65491, 16}, {65492, 16}, {65493, 16}, {65494, 16}, - {65495, 16}, {65496, 16}, {65497, 16}, {65498, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, - {506, 9}, {65499, 16}, {65500, 16}, {65501, 16}, {65502, 16}, {65503, 16}, {65504, 16}, {65505, 16}, - {65506, 16}, {65507, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {2041, 11}, {65508, 16}, - {65509, 16}, {65510, 16}, {65511, 16}, {65512, 16}, {65513, 16}, {65514, 16}, {65515, 16}, {65516, 16}, - {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {16352, 14}, {65517, 16}, {65518, 16}, {65519, 16}, - {65520, 16}, {65521, 16}, {65522, 16}, {65523, 16}, {65524, 16}, {65525, 16}, {0, 0}, {0, 0}, {0, 0}, - {0, 0}, {0, 0}, {1018, 10}, {32707, 15}, {65526, 16}, {65527, 16}, {65528, 16}, {65529, 16}, {65530, 16}, - {65531, 16}, {65532, 16}, {65533, 16}, {65534, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0} - }; + public static ushort[,] stbi_write_jpg_core_YDC_HT = + {{0, 2}, {2, 3}, {3, 3}, {4, 3}, {5, 3}, {6, 3}, {14, 4}, {30, 5}, {62, 6}, {126, 7}, {254, 8}, {510, 9}}; - public static int[] YQT = + public static int[] stbi_write_jpg_core_YQT = { 16, 11, 10, 16, 24, 40, 51, 61, 12, 12, 14, 19, 26, 58, 60, 55, 14, 13, 16, 24, 40, 57, 69, 56, 14, 17, 22, 29, 51, 87, 80, 62, 18, 22, 37, 56, 68, 109, 103, 77, 24, 35, 55, 64, 81, 104, 113, 92, 49, 64, 78, 87, 103, 121, 120, 101, 72, 92, 95, 98, 112, 100, 103, 99 }; - public static int[] UVQT = + public static int stbi_write_png_compression_level = 8; + public static int stbi_write_tga_with_rle = 1; + + public static ushort[] stbi_zlib_compress_distc = { - 17, 18, 24, 47, 99, 99, 99, 99, 18, 21, 26, 66, 99, 99, 99, 99, 24, 26, 56, 99, 99, 99, 99, 99, 47, 66, 99, - 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99, 99, 99 + 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, + 6145, 8193, 12289, 16385, 24577, 32768 }; - public static float[] aasf = + public static byte[] stbi_zlib_compress_disteb = + {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; + + public static ushort[] stbi_zlib_compress_lengthc = { - 1.0f * 2.828427125f, 1.387039845f * 2.828427125f, 1.306562965f * 2.828427125f, 1.175875602f * 2.828427125f, - 1.0f * 2.828427125f, 0.785694958f * 2.828427125f, 0.541196100f * 2.828427125f, 0.275899379f * 2.828427125f + 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, + 227, 258, 259 }; - public static byte[] head0 = + public static byte[] stbi_zlib_compress_lengtheb = + {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0}; + + public static uint[] stbiw__crc32_crc_table = { - 0xFF, 0xD8, 0xFF, 0xE0, 0, 0x10, (byte) 'J', (byte) 'F', (byte) 'I', (byte) 'F', 0, 1, 1, 0, 0, 1, 0, 1, 0, - 0, 0xFF, 0xDB, 0, 0x84, 0 + 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, 0x0eDB8832, + 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, + 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, 0x646BA8C0, 0xFD62F97A, + 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, + 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, + 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, + 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, + 0xB6662D3D, 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, + 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, 0x6B6B51F4, + 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, + 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, 0x4DB26158, 0x3AB551CE, 0xA3BC0074, + 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, + 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, + 0x206F85B3, 0xB966D409, 0xCE61E49F, 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, + 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, + 0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, + 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, 0xFED41B76, + 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E, + 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, + 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, + 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, + 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, + 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, + 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, + 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, + 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, + 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, 0xBDBDF21C, 0xCABAC28A, 0x53B39330, + 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, + 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D }; - public static byte[] head2 = { 0xFF, 0xDA, 0, 0xC, 3, 1, 0, 2, 0x11, 3, 0x11, 0, 0x3F, 0 }; + public static int[] stbiw__encode_png_line_firstmap = { 0, 1, 0, 5, 6 }; + public static int[] stbiw__encode_png_line_mapping = { 0, 1, 2, 3, 4 }; - public static void stbi_flip_vertically_on_write(int flag) + public static byte[] stbiw__jpg_ZigZag = { - stbi__flip_vertically_on_write = flag; - } + 0, 1, 5, 6, 14, 15, 27, 28, 2, 4, 7, 13, 16, 26, 29, 42, 3, 8, 12, 17, 25, 30, 41, 43, 9, 11, 18, 24, 31, + 40, 44, 53, 10, 19, 23, 32, 39, 45, 52, 54, 20, 22, 33, 38, 46, 51, 55, 60, 21, 34, 37, 47, 50, 56, 59, 61, + 35, 36, 48, 49, 57, 58, 62, 63 + }; - public static void stbiw__putc(stbi__write_context s, byte c) + public static void stbi__start_write_callbacks(stbi__write_context s, delegate0 c, void* context) { - s.func(s.context, &c, 1); + s.func = c; + s.context = context; } - public static void stbiw__write3(stbi__write_context s, byte a, byte b, byte c) + public static void stbi_flip_vertically_on_write(int flag) { - var arr = stackalloc byte[3]; - arr[0] = a; - arr[1] = b; - arr[2] = c; - s.func(s.context, arr, 3); + stbi__flip_vertically_on_write = flag; } - public static void stbiw__write_pixel(stbi__write_context s, int rgb_dir, int comp, int write_alpha, - int expand_mono, byte* d) + public static int stbi_write_bmp_core(stbi__write_context s, int x, int y, int comp, void* data) { - var bg = stackalloc byte[3]; - bg[0] = 255; - bg[1] = 0; - bg[2] = 255; - var px = stackalloc byte[3]; - var k = 0; - if (write_alpha < 0) - s.func(s.context, &d[comp - 1], 1); - switch (comp) + if (comp != 4) { - case 2: - case 1: - if (expand_mono != 0) - stbiw__write3(s, d[0], d[0], d[0]); - else - s.func(s.context, d, 1); - break; - case 3: - case 4: - if (comp == 4 && write_alpha == 0) - { - for (k = 0; k < 3; ++k) px[k] = (byte)(bg[k] + (d[k] - bg[k]) * d[3] / 255); - stbiw__write3(s, px[1 - rgb_dir], px[1], px[1 + rgb_dir]); - break; - } - - stbiw__write3(s, d[1 - rgb_dir], d[1], d[1 + rgb_dir]); - break; + var pad = (-x * 3) & 3; + return stbiw__outfile(s, -1, -1, x, y, comp, 1, data, 0, pad, "11 4 22 44 44 22 444444", 66, 77, + 14 + 40 + (x * 3 + pad) * y, 0, 0, 14 + 40, 40, x, y, 1, 24, 0, 0, 0, 0, 0, 0); } - if (write_alpha > 0) - s.func(s.context, &d[comp - 1], 1); + return stbiw__outfile(s, -1, -1, x, y, comp, 1, data, 1, 0, + "11 4 22 44 44 22 444444 4444 4 444 444 444 444", 66, 77, 14 + 108 + x * y * 4, 0, 0, 14 + 108, 108, x, + y, 1, 32, 3, 0, 0, 0, 0, 0, 0xff0000, 0xff00, 0xff, 0xff000000u, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); } - public static void stbiw__write_pixels(stbi__write_context s, int rgb_dir, int vdir, int x, int y, int comp, - void* data, int write_alpha, int scanline_pad, int expand_mono) + public static int stbi_write_bmp_to_func(delegate0 func, void* context, int x, int y, int comp, void* data) { - var zero = (uint)0; - var i = 0; - var j = 0; - var j_end = 0; - if (y <= 0) - return; - if (stbi__flip_vertically_on_write != 0) - vdir *= -1; - if (vdir < 0) - { - j_end = -1; - j = y - 1; - } - else - { - j_end = y; - j = 0; - } - - for (; j != j_end; j += vdir) - { - for (i = 0; i < x; ++i) - { - var d = (byte*)data + (j * x + i) * comp; - stbiw__write_pixel(s, rgb_dir, comp, write_alpha, expand_mono, d); - } - - s.func(s.context, &zero, scanline_pad); - } + var s = new stbi__write_context(); + stbi__start_write_callbacks(s, func, context); + return stbi_write_bmp_core(s, x, y, comp, data); } - public static int stbi_write_bmp_core(stbi__write_context s, int x, int y, int comp, void* data) + public static int stbi_write_hdr_to_func(delegate0 func, void* context, int x, int y, int comp, float* data) { - var pad = (-x * 3) & 3; - return stbiw__outfile(s, -1, -1, x, y, comp, 1, data, 0, pad, "11 4 22 44 44 22 444444", (int)'B', - (int)'M', 14 + 40 + (x * 3 + pad) * y, 0, 0, 14 + 40, 40, x, y, 1, 24, 0, 0, 0, 0, 0, 0); + var s = new stbi__write_context(); + stbi__start_write_callbacks(s, func, context); + return stbi_write_hdr_core(s, x, y, comp, data); } - public static int stbi_write_tga_core(stbi__write_context s, int x, int y, int comp, void* data) + public static int stbi_write_jpg_core(stbi__write_context s, int width, int height, int comp, void* data, + int quality) { - var has_alpha = comp == 2 || comp == 4 ? 1 : 0; - var colorbytes = has_alpha != 0 ? comp - 1 : comp; - var format = colorbytes < 2 ? 3 : 2; + var row = 0; + var col = 0; + var i = 0; + var k = 0; + var subsample = 0; + var fdtbl_Y = stackalloc float[64]; + var fdtbl_UV = stackalloc float[64]; + var YTable = stackalloc byte[64]; + var UVTable = stackalloc byte[64]; + if (data == null || width == 0 || height == 0 || comp > 4 || comp < 1) return 0; + + quality = quality != 0 ? quality : 90; + subsample = quality <= 90 ? 1 : 0; + quality = quality < 1 ? 1 : quality > 100 ? 100 : quality; + quality = quality < 50 ? 5000 / quality : 200 - quality * 2; + for (i = 0; i < 64; ++i) + { + var uvti = 0; + var yti = (stbi_write_jpg_core_YQT[i] * quality + 50) / 100; + YTable[stbiw__jpg_ZigZag[i]] = (byte)(yti < 1 ? 1 : yti > 255 ? 255 : yti); + uvti = (stbi_write_jpg_core_UVQT[i] * quality + 50) / 100; + UVTable[stbiw__jpg_ZigZag[i]] = (byte)(uvti < 1 ? 1 : uvti > 255 ? 255 : uvti); + } + + for (row = 0, k = 0; row < 8; ++row) + for (col = 0; col < 8; ++col, ++k) + { + fdtbl_Y[k] = 1 / (YTable[stbiw__jpg_ZigZag[k]] * stbi_write_jpg_core_aasf[row] * + stbi_write_jpg_core_aasf[col]); + fdtbl_UV[k] = 1 / (UVTable[stbiw__jpg_ZigZag[k]] * stbi_write_jpg_core_aasf[row] * + stbi_write_jpg_core_aasf[col]); + } + + { + var head1 = stackalloc byte[] + { + 0xFF, + 0xC0, + 0, + 0x11, + 8, + (byte)(height >> 8), + (byte)(height & 0xff), + (byte)(width >> 8), + (byte)(width & 0xff), + 3, + 1, + (byte)(subsample != 0 ? 0x22 : 0x11), + 0, + 2, + 0x11, + 1, + 3, + 0x11, + 1, + 0xFF, + 0xC4, + 0x01, + 0xA2, + 0 + }; + fixed (byte* ptr = stbi_write_jpg_core_head0) + { + s.func(s.context, ptr, 25 * sizeof(byte)); + } + + s.func(s.context, YTable, 64 * sizeof(byte)); + stbiw__putc(s, 1); + s.func(s.context, UVTable, 64 * sizeof(byte)); + s.func(s.context, head1, 24 * sizeof(byte)); + fixed (byte* ptr = &stbi_write_jpg_core_std_dc_luminance_nrcodes[1]) + { + s.func(s.context, ptr, 17 * sizeof(byte) - 1); + } + + fixed (byte* ptr = stbi_write_jpg_core_std_dc_luminance_values) + { + s.func(s.context, ptr, 12 * sizeof(byte)); + } + + stbiw__putc(s, 0x10); + + fixed (byte* ptr = &stbi_write_jpg_core_std_ac_luminance_nrcodes[1]) + { + s.func(s.context, ptr, 17 * sizeof(byte) - 1); + } + + fixed (byte* ptr = stbi_write_jpg_core_std_ac_luminance_values) + { + s.func(s.context, ptr, 162 * sizeof(byte)); + } + + stbiw__putc(s, 1); + fixed (byte* ptr = &stbi_write_jpg_core_std_dc_chrominance_nrcodes[1]) + { + s.func(s.context, ptr, 17 * sizeof(byte) - 1); + } + + fixed (byte* ptr = stbi_write_jpg_core_std_dc_chrominance_values) + { + s.func(s.context, ptr, 12 * sizeof(byte)); + } + + stbiw__putc(s, 0x11); + + fixed (byte* ptr = &stbi_write_jpg_core_std_ac_chrominance_nrcodes[1]) + { + s.func(s.context, ptr, 17 * sizeof(byte) - 1); + } + + fixed (byte* ptr = stbi_write_jpg_core_std_ac_chrominance_values) + { + s.func(s.context, ptr, 162 * sizeof(byte)); + } + + fixed (byte* ptr = stbi_write_jpg_core_head2) + { + s.func(s.context, ptr, 14 * sizeof(byte)); + } + } + + { + var DCY = 0; + var DCU = 0; + var DCV = 0; + var bitBuf = 0; + var bitCnt = 0; + var ofsG = comp > 2 ? 1 : 0; + var ofsB = comp > 2 ? 2 : 0; + var dataR = (byte*)data; + var dataG = dataR + ofsG; + var dataB = dataR + ofsB; + var x = 0; + var y = 0; + var pos = 0; + if (subsample != 0) + { + var Y = stackalloc float[256]; + var U = stackalloc float[256]; + var V = stackalloc float[256]; + + for (y = 0; y < height; y += 16) + for (x = 0; x < width; x += 16) + { + for (row = y, pos = 0; row < y + 16; ++row) + { + var clamped_row = row < height ? row : height - 1; + var base_p = + (stbi__flip_vertically_on_write != 0 ? height - 1 - clamped_row : clamped_row) * width * + comp; + for (col = x; col < x + 16; ++col, ++pos) + { + var p = base_p + (col < width ? col : width - 1) * comp; + float r = dataR[p]; + float g = dataG[p]; + float b = dataB[p]; + Y[pos] = +0.29900f * r + 0.58700f * g + 0.11400f * b - 128; + U[pos] = -0.16874f * r - 0.33126f * g + 0.50000f * b; + V[pos] = +0.50000f * r - 0.41869f * g - 0.08131f * b; + } + } + + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 0, 16, fdtbl_Y, DCY, + stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 8, 16, fdtbl_Y, DCY, + stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 128, 16, fdtbl_Y, DCY, + stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 136, 16, fdtbl_Y, DCY, + stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); + { + var subU = stackalloc float[64]; + var subV = stackalloc float[64]; + var yy = 0; + var xx = 0; + for (yy = 0, pos = 0; yy < 8; ++yy) + for (xx = 0; xx < 8; ++xx, ++pos) + { + var j = yy * 32 + xx * 2; + subU[pos] = (U[j + 0] + U[j + 1] + U[j + 16] + U[j + 17]) * 0.25f; + subV[pos] = (V[j + 0] + V[j + 1] + V[j + 16] + V[j + 17]) * 0.25f; + } + + DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subU, 8, fdtbl_UV, DCU, + stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); + DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subV, 8, fdtbl_UV, DCV, + stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); + } + } + } + else + { + for (y = 0; y < height; y += 8) + for (x = 0; x < width; x += 8) + { + var Y = stackalloc float[64]; + var U = stackalloc float[64]; + var V = stackalloc float[64]; + for (row = y, pos = 0; row < y + 8; ++row) + { + var clamped_row = row < height ? row : height - 1; + var base_p = + (stbi__flip_vertically_on_write != 0 ? height - 1 - clamped_row : clamped_row) * width * + comp; + for (col = x; col < x + 8; ++col, ++pos) + { + var p = base_p + (col < width ? col : width - 1) * comp; + float r = dataR[p]; + float g = dataG[p]; + float b = dataB[p]; + Y[pos] = +0.29900f * r + 0.58700f * g + 0.11400f * b - 128; + U[pos] = -0.16874f * r - 0.33126f * g + 0.50000f * b; + V[pos] = +0.50000f * r - 0.41869f * g - 0.08131f * b; + } + } + + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y, 8, fdtbl_Y, DCY, stbi_write_jpg_core_YDC_HT, + stbi_write_jpg_core_YAC_HT); + DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, U, 8, fdtbl_UV, DCU, + stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); + DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, V, 8, fdtbl_UV, DCV, + stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); + } + } + + stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, + stbi_write_jpg_core_fillBits[0], + stbi_write_jpg_core_fillBits[1]); + } + + stbiw__putc(s, 0xFF); + stbiw__putc(s, 0xD9); + return 1; + } + + public static int stbi_write_jpg_to_func(delegate0 func, void* context, int x, int y, int comp, void* data, + int quality) + { + var s = new stbi__write_context(); + stbi__start_write_callbacks(s, func, context); + return stbi_write_jpg_core(s, x, y, comp, data, quality); + } + + public static int stbi_write_png_to_func(delegate0 func, void* context, int x, int y, int comp, void* data, + int stride_bytes) + { + var len = 0; + var png = stbi_write_png_to_mem((byte*)data, stride_bytes, x, y, comp, &len); + if (png == null) + return 0; + func(context, png, len); + CRuntime.free(png); + return 1; + } + + public static byte* stbi_write_png_to_mem(byte* pixels, int stride_bytes, int x, int y, int n, int* out_len) + { + var force_filter = stbi_write_force_png_filter; + var ctype = stackalloc int[] { -1, 0, 4, 2, 6 }; + var sig = stackalloc byte[] { 137, 80, 78, 71, 13, 10, 26, 10 }; + byte* _out_; + byte* o; + byte* filt; + byte* zlib; + sbyte* line_buffer; + var j = 0; + var zlen = 0; + if (stride_bytes == 0) + stride_bytes = x * n; + if (force_filter >= 5) force_filter = -1; + + filt = (byte*)CRuntime.malloc((ulong)((x * n + 1) * y)); + if (filt == null) + return null; + line_buffer = (sbyte*)CRuntime.malloc((ulong)(x * n)); + if (line_buffer == null) + { + CRuntime.free(filt); + return null; + } + + for (j = 0; j < y; ++j) + { + var filter_type = 0; + if (force_filter > -1) + { + filter_type = force_filter; + stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, force_filter, line_buffer); + } + else + { + var best_filter = 0; + var best_filter_val = 0x7fffffff; + var est = 0; + var i = 0; + for (filter_type = 0; filter_type < 5; filter_type++) + { + stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, filter_type, line_buffer); + est = 0; + for (i = 0; i < x * n; ++i) est += CRuntime.abs(line_buffer[i]); + + if (est < best_filter_val) + { + best_filter_val = est; + best_filter = filter_type; + } + } + + if (filter_type != best_filter) + { + stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, best_filter, line_buffer); + filter_type = best_filter; + } + } + + filt[j * (x * n + 1)] = (byte)filter_type; + CRuntime.memmove(filt + j * (x * n + 1) + 1, line_buffer, (ulong)(x * n)); + } + + CRuntime.free(line_buffer); + zlib = stbi_zlib_compress(filt, y * (x * n + 1), &zlen, stbi_write_png_compression_level); + CRuntime.free(filt); + if (zlib == null) + return null; + _out_ = (byte*)CRuntime.malloc((ulong)(8 + 12 + 13 + 12 + zlen + 12)); + if (_out_ == null) + return null; + *out_len = 8 + 12 + 13 + 12 + zlen + 12; + o = _out_; + CRuntime.memmove(o, sig, (ulong)8); + o += 8; + o[0] = (13 >> 24) & 0xff; + o[1] = (13 >> 16) & 0xff; + o[2] = (13 >> 8) & 0xff; + o[3] = 13 & 0xff; + o += 4; + o[0] = (byte)("IHDR"[0] & 0xff); + o[1] = (byte)("IHDR"[1] & 0xff); + o[2] = (byte)("IHDR"[2] & 0xff); + o[3] = (byte)("IHDR"[3] & 0xff); + o += 4; + o[0] = (byte)((x >> 24) & 0xff); + o[1] = (byte)((x >> 16) & 0xff); + o[2] = (byte)((x >> 8) & 0xff); + o[3] = (byte)(x & 0xff); + o += 4; + o[0] = (byte)((y >> 24) & 0xff); + o[1] = (byte)((y >> 16) & 0xff); + o[2] = (byte)((y >> 8) & 0xff); + o[3] = (byte)(y & 0xff); + o += 4; + *o++ = 8; + *o++ = (byte)(ctype[n] & 0xff); + *o++ = 0; + *o++ = 0; + *o++ = 0; + stbiw__wpcrc(&o, 13); + o[0] = (byte)((zlen >> 24) & 0xff); + o[1] = (byte)((zlen >> 16) & 0xff); + o[2] = (byte)((zlen >> 8) & 0xff); + o[3] = (byte)(zlen & 0xff); + o += 4; + o[0] = (byte)("IDAT"[0] & 0xff); + o[1] = (byte)("IDAT"[1] & 0xff); + o[2] = (byte)("IDAT"[2] & 0xff); + o[3] = (byte)("IDAT"[3] & 0xff); + o += 4; + CRuntime.memmove(o, zlib, (ulong)zlen); + o += zlen; + CRuntime.free(zlib); + stbiw__wpcrc(&o, zlen); + o[0] = (0 >> 24) & 0xff; + o[1] = (0 >> 16) & 0xff; + o[2] = (0 >> 8) & 0xff; + o[3] = 0 & 0xff; + o += 4; + o[0] = (byte)("IEND"[0] & 0xff); + o[1] = (byte)("IEND"[1] & 0xff); + o[2] = (byte)("IEND"[2] & 0xff); + o[3] = (byte)("IEND"[3] & 0xff); + o += 4; + stbiw__wpcrc(&o, 0); + return _out_; + } + + public static int stbi_write_tga_core(stbi__write_context s, int x, int y, int comp, void* data) + { + var has_alpha = comp == 2 || comp == 4 ? 1 : 0; + var colorbytes = has_alpha != 0 ? comp - 1 : comp; + var format = colorbytes < 2 ? 3 : 2; if (y < 0 || x < 0) return 0; if (stbi_write_tga_with_rle == 0) @@ -372,228 +714,38 @@ public static int stbi_write_tga_core(stbi__write_context s, int x, int y, int c if (diff != 0) { var header = (byte)((len - 1) & 0xff); - s.func(s.context, &header, 1); + stbiw__write1(s, header); for (k = 0; k < len; ++k) stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin + k * comp); } else { var header = (byte)((len - 129) & 0xff); - s.func(s.context, &header, 1); + stbiw__write1(s, header); stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin); } } } + stbiw__write_flush(s); + return 1; } - public static void stbiw__linear_to_rgbe(byte* rgbe, float* linear) + public static int stbi_write_tga_to_func(delegate0 func, void* context, int x, int y, int comp, void* data) { - var exponent = 0; - var maxcomp = linear[0] > (linear[1] > linear[2] ? linear[1] : linear[2]) ? linear[0] : - linear[1] > linear[2] ? linear[1] : linear[2]; - if (maxcomp < 1e-32f) - { - rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0; - } - else - { - var normalize = (float)CRuntime.frexp(maxcomp, &exponent) * 256.0f / maxcomp; - rgbe[0] = (byte)(linear[0] * normalize); - rgbe[1] = (byte)(linear[1] * normalize); - rgbe[2] = (byte)(linear[2] * normalize); - rgbe[3] = (byte)(exponent + 128); - } - } - - public static void stbiw__write_run_data(stbi__write_context s, int length, byte databyte) - { - var lengthbyte = (byte)((length + 128) & 0xff); - s.func(s.context, &lengthbyte, 1); - s.func(s.context, &databyte, 1); - } - - public static void stbiw__write_dump_data(stbi__write_context s, int length, byte* data) - { - var lengthbyte = (byte)(length & 0xff); - s.func(s.context, &lengthbyte, 1); - s.func(s.context, data, length); - } - - public static void stbiw__write_hdr_scanline(stbi__write_context s, int width, int ncomp, byte* scratch, - float* scanline) - { - var scanlineheader = stackalloc byte[4]; - scanlineheader[0] = 2; - scanlineheader[1] = 2; - scanlineheader[2] = 0; - scanlineheader[3] = 0; - - var rgbe = stackalloc byte[4]; - var linear = stackalloc float[3]; - var x = 0; - scanlineheader[2] = (byte)((width & 0xff00) >> 8); - scanlineheader[3] = (byte)(width & 0x00ff); - if (width < 8 || width >= 32768) - { - for (x = 0; x < width; x++) - { - switch (ncomp) - { - case 4: - case 3: - linear[2] = scanline[x * ncomp + 2]; - linear[1] = scanline[x * ncomp + 1]; - linear[0] = scanline[x * ncomp + 0]; - break; - default: - linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; - break; - } - - stbiw__linear_to_rgbe(rgbe, linear); - s.func(s.context, rgbe, 4); - } - } - else - { - var c = 0; - var r = 0; - for (x = 0; x < width; x++) - { - switch (ncomp) - { - case 4: - case 3: - linear[2] = scanline[x * ncomp + 2]; - linear[1] = scanline[x * ncomp + 1]; - linear[0] = scanline[x * ncomp + 0]; - break; - default: - linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; - break; - } - - stbiw__linear_to_rgbe(rgbe, linear); - scratch[x + width * 0] = rgbe[0]; - scratch[x + width * 1] = rgbe[1]; - scratch[x + width * 2] = rgbe[2]; - scratch[x + width * 3] = rgbe[3]; - } - - s.func(s.context, scanlineheader, 4); - for (c = 0; c < 4; c++) - { - var comp = &scratch[width * c]; - x = 0; - while (x < width) - { - r = x; - while (r + 2 < width) - { - if (comp[r] == comp[r + 1] && comp[r] == comp[r + 2]) - break; - ++r; - } - - if (r + 2 >= width) - r = width; - while (x < r) - { - var len = r - x; - if (len > 128) - len = 128; - stbiw__write_dump_data(s, len, &comp[x]); - x += len; - } - - if (r + 2 < width) - { - while (r < width && comp[r] == comp[x]) ++r; - while (x < r) - { - var len = r - x; - if (len > 127) - len = 127; - stbiw__write_run_data(s, len, comp[x]); - x += len; - } - } - } - } - } - } - - public static void* stbiw__sbgrowf(void** arr, int increment, int itemsize) - { - var m = *arr != null ? 2 * ((int*)*arr - 2)[0] + increment : increment + 1; - var p = CRuntime.realloc(*arr != null ? (int*)*arr - 2 : null, (ulong)(itemsize * m + sizeof(int) * 2)); - if (p != null) - { - if (*arr == null) - ((int*)p)[1] = 0; - *arr = (int*)p + 2; - ((int*)*arr - 2)[0] = m; - } - - return *arr; - } - - public static byte* stbiw__zlib_flushf(byte* data, uint* bitbuffer, int* bitcount) - { - while (*bitcount >= 8) - { - if (data == null || ((int*)data - 2)[1] + 1 >= ((int*)data - 2)[0]) - stbiw__sbgrowf((void**)&data, 1, sizeof(byte)); - data[((int*)data - 2)[1]++] = (byte)(*bitbuffer & 0xff); - *bitbuffer >>= 8; - *bitcount -= 8; - } - - return data; - } - - public static int stbiw__zlib_bitrev(int code, int codebits) - { - var res = 0; - while (codebits-- != 0) - { - res = (res << 1) | (code & 1); - code >>= 1; - } - - return res; - } - - public static uint stbiw__zlib_countm(byte* a, byte* b, int limit) - { - var i = 0; - for (i = 0; i < limit && i < 258; ++i) - if (a[i] != b[i]) - break; - return (uint)i; - } - - public static uint stbiw__zhash(byte* data) - { - var hash = (uint)(data[0] + (data[1] << 8) + (data[2] << 16)); - hash ^= hash << 3; - hash += hash >> 5; - hash ^= hash << 4; - hash += hash >> 17; - hash ^= hash << 25; - hash += hash >> 6; - return hash; + var s = new stbi__write_context(); + stbi__start_write_callbacks(s, func, context); + return stbi_write_tga_core(s, x, y, comp, data); } public static byte* stbi_zlib_compress(byte* data, int data_len, int* out_len, int quality) { - var bitbuf = (uint)0; + uint bitbuf = 0; var i = 0; var j = 0; var bitcount = 0; byte* _out_ = null; - var hash_table = (byte***)CRuntime.malloc((ulong)(16384 * sizeof(char**))); + var hash_table = (byte***)CRuntime.malloc((ulong)(16384 * sizeof(byte**))); if (hash_table == null) return null; if (quality < 5) @@ -619,6 +771,7 @@ public static uint stbiw__zhash(byte* data) } for (i = 0; i < 16384; ++i) hash_table[i] = null; + i = 0; while (i < data_len - 3) { @@ -646,6 +799,7 @@ public static uint stbiw__zhash(byte* data) if (hash_table[h] == null || ((int*)hash_table[h] - 2)[1] + 1 >= ((int*)hash_table[h] - 2)[0]) stbiw__sbgrowf((void**)&hash_table[h], 1, sizeof(byte*)); + hash_table[h][((int*)hash_table[h] - 2)[1]++] = data + i; if (bestloc != null) { @@ -667,7 +821,7 @@ public static uint stbiw__zhash(byte* data) if (bestloc != null) { var d = (int)(data + i - bestloc); - for (j = 0; best > lengthc[j + 1] - 1; ++j) + for (j = 0; best > stbi_zlib_compress_lengthc[j + 1] - 1; ++j) { } @@ -696,14 +850,14 @@ public static uint stbiw__zhash(byte* data) _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); } - if (lengtheb[j] != 0) + if (stbi_zlib_compress_lengtheb[j] != 0) { - bitbuf |= (uint)((best - lengthc[j]) << bitcount); - bitcount += lengtheb[j]; + bitbuf |= (uint)((best - stbi_zlib_compress_lengthc[j]) << bitcount); + bitcount += stbi_zlib_compress_lengtheb[j]; _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); } - for (j = 0; d > distc[j + 1] - 1; ++j) + for (j = 0; d > stbi_zlib_compress_distc[j + 1] - 1; ++j) { } @@ -712,10 +866,11 @@ public static uint stbiw__zhash(byte* data) bitcount += 5; _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); } - if (disteb[j] != 0) + + if (stbi_zlib_compress_disteb[j] != 0) { - bitbuf |= (uint)((d - distc[j]) << bitcount); - bitcount += disteb[j]; + bitbuf |= (uint)((d - stbi_zlib_compress_distc[j]) << bitcount); + bitcount += stbi_zlib_compress_disteb[j]; _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); } @@ -754,9 +909,32 @@ public static uint stbiw__zhash(byte* data) _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); } - bitbuf |= (uint)(stbiw__zlib_bitrev(0, 7) << bitcount); - bitcount += 7; - _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + if (256 <= 143) + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0x30 + 256, 8) << bitcount); + bitcount += 8; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + + if (256 <= 255) + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0x190 + 256 - 144, 9) << bitcount); + bitcount += 9; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + + if (256 <= 279) + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0 + 256 - 256, 7) << bitcount); + bitcount += 7; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } + else + { + bitbuf |= (uint)(stbiw__zlib_bitrev(0xc0 + 256 - 280, 8) << bitcount); + bitcount += 8; + _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); + } while (bitcount != 0) { @@ -768,10 +946,45 @@ public static uint stbiw__zhash(byte* data) for (i = 0; i < 16384; ++i) if (hash_table[i] != null) CRuntime.free((int*)hash_table[i] - 2); + CRuntime.free(hash_table); + if (((int*)_out_ - 2)[1] > data_len + 2 + (data_len + 32766) / 32767 * 5) + { + ((int*)_out_ - 2)[1] = 2; + for (j = 0; j < data_len;) + { + var blocklen = data_len - j; + if (blocklen > 32767) + blocklen = 32767; + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + + _out_[((int*)_out_ - 2)[1]++] = (byte)(data_len - j == blocklen ? 1 : 0); + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + + _out_[((int*)_out_ - 2)[1]++] = (byte)(blocklen & 0xff); + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + + _out_[((int*)_out_ - 2)[1]++] = (byte)((blocklen >> 8) & 0xff); + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + + _out_[((int*)_out_ - 2)[1]++] = (byte)(~blocklen & 0xff); + if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) + stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + + _out_[((int*)_out_ - 2)[1]++] = (byte)((~blocklen >> 8) & 0xff); + CRuntime.memcpy(_out_ + ((int*)_out_ - 2)[1], data + j, (ulong)blocklen); + ((int*)_out_ - 2)[1] += blocklen; + j += blocklen; + } + } + { - var s1 = (uint)1; - var s2 = (uint)0; + uint s1 = 1; + uint s2 = 0; var blocklen = data_len % 5552; j = 0; while (j < data_len) @@ -790,15 +1003,19 @@ public static uint stbiw__zhash(byte* data) if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + _out_[((int*)_out_ - 2)[1]++] = (byte)((s2 >> 8) & 0xff); if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + _out_[((int*)_out_ - 2)[1]++] = (byte)(s2 & 0xff); if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + _out_[((int*)_out_ - 2)[1]++] = (byte)((s1 >> 8) & 0xff); if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); + _out_[((int*)_out_ - 2)[1]++] = (byte)(s1 & 0xff); } @@ -811,51 +1028,15 @@ public static uint stbiw__crc32(byte* buffer, int len) { var crc = ~0u; var i = 0; - for (i = 0; i < len; ++i) crc = (crc >> 8) ^ crc_table[buffer[i] ^ (crc & 0xff)]; - return ~crc; - } - - public static void stbiw__wpcrc(byte** data, int len) - { - var crc = stbiw__crc32(*data - len - 4, len + 4); - (*data)[0] = (byte)((crc >> 24) & 0xff); - (*data)[1] = (byte)((crc >> 16) & 0xff); - (*data)[2] = (byte)((crc >> 8) & 0xff); - (*data)[3] = (byte)(crc & 0xff); - (*data) += 4; - } + for (i = 0; i < len; ++i) crc = (crc >> 8) ^ stbiw__crc32_crc_table[buffer[i] ^ (crc & 0xff)]; - public static byte stbiw__paeth(int a, int b, int c) - { - var p = a + b - c; - var pa = CRuntime.abs(p - a); - var pb = CRuntime.abs(p - b); - var pc = CRuntime.abs(p - c); - if (pa <= pb && pa <= pc) - return (byte)(a & 0xff); - if (pb <= pc) - return (byte)(b & 0xff); - return (byte)(c & 0xff); + return ~crc; } public static void stbiw__encode_png_line(byte* pixels, int stride_bytes, int width, int height, int y, int n, int filter_type, sbyte* line_buffer) { - var mapping = stackalloc int[5]; - mapping[0] = 0; - mapping[1] = 1; - mapping[2] = 2; - mapping[3] = 3; - mapping[4] = 4; - - var firstmap = stackalloc int[5]; - firstmap[0] = 0; - firstmap[1] = 1; - firstmap[2] = 0; - firstmap[3] = 5; - firstmap[4] = 6; - - var mymap = y != 0 ? mapping : firstmap; + var mymap = y != 0 ? stbiw__encode_png_line_mapping : stbiw__encode_png_line_firstmap; var i = 0; var type = mymap[filter_type]; var z = pixels + stride_bytes * (stbi__flip_vertically_on_write != 0 ? height - 1 - y : y); @@ -893,190 +1074,42 @@ public static void stbiw__encode_png_line(byte* pixels, int stride_bytes, int wi { case 1: for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - z[i - n]); + break; case 2: for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - z[i - signed_stride]); + break; case 3: for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - ((z[i - n] + z[i - signed_stride]) >> 1)); + break; case 4: for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - stbiw__paeth(z[i - n], z[i - signed_stride], z[i - signed_stride - n])); + break; case 5: for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - (z[i - n] >> 1)); + break; case 6: for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - stbiw__paeth(z[i - n], 0, 0)); + break; } } - public static byte* stbi_write_png_to_mem(byte* pixels, int stride_bytes, int x, int y, int n, int* out_len) + public static void stbiw__jpg_calcBits(int val, ushort* bits) { - var force_filter = stbi_write_force_png_filter; - var ctype = stackalloc int[5]; - ctype[0] = -1; - ctype[1] = 0; - ctype[2] = 4; - ctype[3] = 2; - ctype[4] = 6; - - var sig = stackalloc byte[8]; - sig[0] = 137; - sig[1] = 80; - sig[2] = 78; - sig[3] = 71; - sig[4] = 13; - sig[5] = 10; - sig[6] = 26; - sig[7] = 10; + var tmp1 = val < 0 ? -val : val; + val = val < 0 ? val - 1 : val; + bits[1] = 1; + while ((tmp1 >>= 1) != 0) ++bits[1]; - byte* _out_; - byte* o; - byte* filt; - byte* zlib; - sbyte* line_buffer; - var j = 0; - var zlen = 0; - if (stride_bytes == 0) - stride_bytes = x * n; - if (force_filter >= 5) force_filter = -1; - - filt = (byte*)CRuntime.malloc((ulong)((x * n + 1) * y)); - if (filt == null) - return null; - line_buffer = (sbyte*)CRuntime.malloc((ulong)(x * n)); - if (line_buffer == null) - { - CRuntime.free(filt); - return null; - } - - for (j = 0; j < y; ++j) - { - var filter_type = 0; - if (force_filter > -1) - { - filter_type = force_filter; - stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, force_filter, line_buffer); - } - else - { - var best_filter = 0; - var best_filter_val = 0x7fffffff; - var est = 0; - var i = 0; - for (filter_type = 0; filter_type < 5; filter_type++) - { - stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, filter_type, line_buffer); - est = 0; - for (i = 0; i < x * n; ++i) est += CRuntime.abs(line_buffer[i]); - if (est < best_filter_val) - { - best_filter_val = est; - best_filter = filter_type; - } - } - - if (filter_type != best_filter) - { - stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, best_filter, line_buffer); - filter_type = best_filter; - } - } - - filt[j * (x * n + 1)] = (byte)filter_type; - CRuntime.memmove(filt + j * (x * n + 1) + 1, line_buffer, (ulong)(x * n)); - } - - CRuntime.free(line_buffer); - zlib = stbi_zlib_compress(filt, y * (x * n + 1), &zlen, stbi_write_png_compression_level); - CRuntime.free(filt); - if (zlib == null) - return null; - _out_ = (byte*)CRuntime.malloc((ulong)(8 + 12 + 13 + 12 + zlen + 12)); - if (_out_ == null) - return null; - *out_len = 8 + 12 + 13 + 12 + zlen + 12; - o = _out_; - CRuntime.memmove(o, sig, (ulong)8); - o += 8; - o[0] = (13 >> 24) & 0xff; - o[1] = (13 >> 16) & 0xff; - o[2] = (13 >> 8) & 0xff; - o[3] = 13 & 0xff; - o += 4; - o[0] = (byte)("IHDR"[0] & 0xff); - o[1] = (byte)("IHDR"[1] & 0xff); - o[2] = (byte)("IHDR"[2] & 0xff); - o[3] = (byte)("IHDR"[3] & 0xff); - o += 4; - o[0] = (byte)((x >> 24) & 0xff); - o[1] = (byte)((x >> 16) & 0xff); - o[2] = (byte)((x >> 8) & 0xff); - o[3] = (byte)(x & 0xff); - o += 4; - o[0] = (byte)((y >> 24) & 0xff); - o[1] = (byte)((y >> 16) & 0xff); - o[2] = (byte)((y >> 8) & 0xff); - o[3] = (byte)(y & 0xff); - o += 4; - *o++ = 8; - *o++ = (byte)(ctype[n] & 0xff); - *o++ = 0; - *o++ = 0; - *o++ = 0; - stbiw__wpcrc(&o, 13); - o[0] = (byte)((zlen >> 24) & 0xff); - o[1] = (byte)((zlen >> 16) & 0xff); - o[2] = (byte)((zlen >> 8) & 0xff); - o[3] = (byte)(zlen & 0xff); - o += 4; - o[0] = (byte)("IDAT"[0] & 0xff); - o[1] = (byte)("IDAT"[1] & 0xff); - o[2] = (byte)("IDAT"[2] & 0xff); - o[3] = (byte)("IDAT"[3] & 0xff); - o += 4; - CRuntime.memmove(o, zlib, (ulong)zlen); - o += zlen; - CRuntime.free(zlib); - stbiw__wpcrc(&o, zlen); - o[0] = (0 >> 24) & 0xff; - o[1] = (0 >> 16) & 0xff; - o[2] = (0 >> 8) & 0xff; - o[3] = 0 & 0xff; - o += 4; - o[0] = (byte)("IEND"[0] & 0xff); - o[1] = (byte)("IEND"[1] & 0xff); - o[2] = (byte)("IEND"[2] & 0xff); - o[3] = (byte)("IEND"[3] & 0xff); - o += 4; - stbiw__wpcrc(&o, 0); - return _out_; - } - - public static void stbiw__jpg_writeBits(stbi__write_context s, int* bitBufP, int* bitCntP, ushort bs0, - ushort bs1) - { - var bitBuf = *bitBufP; - var bitCnt = *bitCntP; - bitCnt += bs1; - bitBuf |= bs0 << (24 - bitCnt); - while (bitCnt >= 8) - { - var c = (byte)((bitBuf >> 16) & 255); - stbiw__putc(s, c); - if (c == 255) stbiw__putc(s, 0); - bitBuf <<= 8; - bitCnt -= 8; - } - - *bitBufP = bitBuf; - *bitCntP = bitCnt; + bits[0] = (ushort)(val & ((1 << bits[1]) - 1)); } public static void stbiw__jpg_DCT(float* d0p, float* d1p, float* d2p, float* d3p, float* d4p, float* d5p, @@ -1133,42 +1166,37 @@ public static void stbiw__jpg_DCT(float* d0p, float* d1p, float* d2p, float* d3p *d6p = d6; } - public static void stbiw__jpg_calcBits(int val, ushort* bits) - { - var tmp1 = val < 0 ? -val : val; - val = val < 0 ? val - 1 : val; - bits[1] = 1; - while ((tmp1 >>= 1) != 0) ++bits[1]; - bits[0] = (ushort)(val & ((1 << bits[1]) - 1)); - } - public static int stbiw__jpg_processDU(stbi__write_context s, int* bitBuf, int* bitCnt, float* CDU, - float* fdtbl, int DC, ushort[,] HTDC, ushort[,] HTAC) + int du_stride, float* fdtbl, int DC, ushort[,] HTDC, ushort[,] HTAC) { - var EOB = stackalloc ushort[2]; - EOB[0] = HTAC[0x00, 0]; - EOB[1] = HTAC[0x00, 1]; - - var M16zeroes = stackalloc ushort[2]; - M16zeroes[0] = HTAC[0xF0, 0]; - M16zeroes[1] = HTAC[0xF0, 1]; - + var EOB = stackalloc ushort[] { HTAC[0x00, 0], HTAC[0x00, 1] }; + var M16zeroes = stackalloc ushort[] { HTAC[0xF0, 0], HTAC[0xF0, 1] }; var dataOff = 0; var i = 0; + var j = 0; + var n = 0; var diff = 0; var end0pos = 0; + var x = 0; + var y = 0; var DU = stackalloc int[64]; - for (dataOff = 0; dataOff < 64; dataOff += 8) + for (dataOff = 0, n = du_stride * 8; dataOff < n; dataOff += du_stride) stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + 1], &CDU[dataOff + 2], &CDU[dataOff + 3], &CDU[dataOff + 4], &CDU[dataOff + 5], &CDU[dataOff + 6], &CDU[dataOff + 7]); + for (dataOff = 0; dataOff < 8; ++dataOff) - stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + 8], &CDU[dataOff + 16], &CDU[dataOff + 24], - &CDU[dataOff + 32], &CDU[dataOff + 40], &CDU[dataOff + 48], &CDU[dataOff + 56]); - for (i = 0; i < 64; ++i) - { - var v = CDU[i] * fdtbl[i]; - DU[stbiw__jpg_ZigZag[i]] = (int)(v < 0 ? v - 0.5f : v + 0.5f); - } + stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + du_stride], &CDU[dataOff + du_stride * 2], + &CDU[dataOff + du_stride * 3], &CDU[dataOff + du_stride * 4], &CDU[dataOff + du_stride * 5], + &CDU[dataOff + du_stride * 6], &CDU[dataOff + du_stride * 7]); + + for (y = 0, j = 0; y < 8; ++y) + for (x = 0; x < 8; ++x, ++j) + { + float v = 0; + i = y * du_stride + x; + v = CDU[i] * fdtbl[j]; + DU[stbiw__jpg_ZigZag[j]] = (int)(v < 0 ? v - 0.5f : v + 0.5f); + } diff = DU[0] - DC; if (diff == 0) @@ -1179,7 +1207,8 @@ public static int stbiw__jpg_processDU(stbi__write_context s, int* bitBuf, int* { var bits = stackalloc ushort[2]; stbiw__jpg_calcBits(diff, bits); - stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTDC[bits[1], 0], HTDC[bits[1], 1]); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, + HTDC[bits[1], 0], HTDC[bits[1], 1]); stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]); } @@ -1210,11 +1239,13 @@ public static int stbiw__jpg_processDU(stbi__write_context s, int* bitBuf, int* var nrmarker = 0; for (nrmarker = 1; nrmarker <= lng; ++nrmarker) stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes[0], M16zeroes[1]); + nrzeroes &= 15; } stbiw__jpg_calcBits(DU[i], bits); - stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1], 0], + stbiw__jpg_writeBits(s, bitBuf, bitCnt, + HTAC[(nrzeroes << 4) + bits[1], 0], HTAC[(nrzeroes << 4) + bits[1], 1]); stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]); } @@ -1224,175 +1255,362 @@ public static int stbiw__jpg_processDU(stbi__write_context s, int* bitBuf, int* return DU[0]; } - public static int stbi_write_jpg_core(stbi__write_context s, int width, int height, int comp, void* data, - int quality) + public static void stbiw__jpg_writeBits(stbi__write_context s, int* bitBufP, int* bitCntP, ushort bs0, + ushort bs1) { - var row = 0; - var col = 0; - var i = 0; - var k = 0; - var fdtbl_Y = stackalloc float[64]; - var fdtbl_UV = stackalloc float[64]; - var YTable = stackalloc byte[64]; - var UVTable = stackalloc byte[64]; - if (data == null || width == 0 || height == 0 || comp > 4 || comp < 1) return 0; + var bitBuf = *bitBufP; + var bitCnt = *bitCntP; + bitCnt += bs1; + bitBuf |= bs0 << (24 - bitCnt); + while (bitCnt >= 8) + { + var c = (byte)((bitBuf >> 16) & 255); + stbiw__putc(s, c); + if (c == 255) stbiw__putc(s, 0); - quality = quality != 0 ? quality : 90; - quality = quality < 1 ? 1 : quality > 100 ? 100 : quality; - quality = quality < 50 ? 5000 / quality : 200 - quality * 2; - for (i = 0; i < 64; ++i) + bitBuf <<= 8; + bitCnt -= 8; + } + + *bitBufP = bitBuf; + *bitCntP = bitCnt; + } + + public static void stbiw__linear_to_rgbe(byte* rgbe, float* linear) + { + var exponent = 0; + var maxcomp = linear[0] > (linear[1] > linear[2] ? linear[1] : linear[2]) ? linear[0] : + linear[1] > linear[2] ? linear[1] : linear[2]; + if (maxcomp < 1e-32f) { - var uvti = 0; - var yti = (YQT[i] * quality + 50) / 100; - YTable[stbiw__jpg_ZigZag[i]] = (byte)(yti < 1 ? 1 : yti > 255 ? 255 : yti); - uvti = (UVQT[i] * quality + 50) / 100; - UVTable[stbiw__jpg_ZigZag[i]] = (byte)(uvti < 1 ? 1 : uvti > 255 ? 255 : uvti); + rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0; + } + else + { + var normalize = (float)CRuntime.frexp(maxcomp, &exponent) * 256.0f / maxcomp; + rgbe[0] = (byte)(linear[0] * normalize); + rgbe[1] = (byte)(linear[1] * normalize); + rgbe[2] = (byte)(linear[2] * normalize); + rgbe[3] = (byte)(exponent + 128); } + } - for (row = 0, k = 0; row < 8; ++row) - for (col = 0; col < 8; ++col, ++k) - { - fdtbl_Y[k] = 1 / (YTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); - fdtbl_UV[k] = 1 / (UVTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); - } + public static byte stbiw__paeth(int a, int b, int c) + { + var p = a + b - c; + var pa = CRuntime.abs(p - a); + var pb = CRuntime.abs(p - b); + var pc = CRuntime.abs(p - c); + if (pa <= pb && pa <= pc) + return (byte)(a & 0xff); + if (pb <= pc) + return (byte)(b & 0xff); + return (byte)(c & 0xff); + } + + public static void stbiw__putc(stbi__write_context s, byte c) + { + s.func(s.context, &c, 1); + } + public static void* stbiw__sbgrowf(void** arr, int increment, int itemsize) + { + var m = *arr != null ? 2 * ((int*)*arr - 2)[0] + increment : increment + 1; + var p = CRuntime.realloc(*arr != null ? (int*)*arr - 2 : null, (ulong)(itemsize * m + sizeof(int) * 2)); + if (p != null) { - var head1 = stackalloc byte[24]; - head1[0] = 0xFF; - head1[1] = 0xC0; - head1[2] = 0; - head1[3] = 0x11; - head1[4] = 8; - head1[5] = (byte)(height >> 8); - head1[6] = (byte)(height & 0xff); - head1[7] = (byte)(width >> 8); - head1[8] = (byte)(width & 0xff); - head1[9] = 3; - head1[10] = 1; - head1[11] = 0x11; - head1[12] = 0; - head1[13] = 2; - head1[14] = 0x11; - head1[15] = 1; - head1[16] = 3; - head1[17] = 0x11; - head1[18] = 1; - head1[19] = 0xFF; - head1[20] = 0xC4; - head1[21] = 0x01; - head1[22] = 0xA2; - head1[23] = 0; - fixed (byte* h = head0) - { - s.func(s.context, h, head0.Length); - } + if (*arr == null) + ((int*)p)[1] = 0; + *arr = (int*)p + 2; + ((int*)*arr - 2)[0] = m; + } - s.func(s.context, YTable, 64); - stbiw__putc(s, 1); - s.func(s.context, UVTable, 64); - s.func(s.context, head1, 24); - fixed (byte* d = &std_dc_luminance_nrcodes[1]) - { - s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); - } + return *arr; + } - fixed (byte* d = std_dc_luminance_values) - { - s.func(s.context, d, std_dc_chrominance_values.Length); - } + public static void stbiw__wpcrc(byte** data, int len) + { + var crc = stbiw__crc32(*data - len - 4, len + 4); + (*data)[0] = (byte)((crc >> 24) & 0xff); + (*data)[1] = (byte)((crc >> 16) & 0xff); + (*data)[2] = (byte)((crc >> 8) & 0xff); + (*data)[3] = (byte)(crc & 0xff); + (*data) += 4; + } - stbiw__putc(s, 0x10); - fixed (byte* a = &std_ac_luminance_nrcodes[1]) - { - s.func(s.context, a, std_ac_luminance_nrcodes.Length - 1); - } + public static void stbiw__write_dump_data(stbi__write_context s, int length, byte* data) + { + var lengthbyte = (byte)(length & 0xff); + s.func(s.context, &lengthbyte, 1); + s.func(s.context, data, length); + } - fixed (byte* d = std_ac_luminance_values) - { - s.func(s.context, d, std_ac_chrominance_values.Length); - } + public static void stbiw__write_flush(stbi__write_context s) + { + if (s.buf_used != 0) + { + s.func(s.context, s.buffer, s.buf_used); + s.buf_used = 0; + } + } - stbiw__putc(s, 1); - fixed (byte* d = &std_dc_chrominance_nrcodes[1]) + public static void stbiw__write_hdr_scanline(stbi__write_context s, int width, int ncomp, byte* scratch, + float* scanline) + { + var scanlineheader = stackalloc byte[] { 2, 2, 0, 0 }; + var rgbe = stackalloc byte[4]; + var linear = stackalloc float[3]; + var x = 0; + scanlineheader[2] = (byte)((width & 0xff00) >> 8); + scanlineheader[3] = (byte)(width & 0x00ff); + if (width < 8 || width >= 32768) + { + for (x = 0; x < width; x++) { - s.func(s.context, d, std_dc_chrominance_nrcodes.Length - 1); - } + switch (ncomp) + { + case 4: + case 3: + linear[2] = scanline[x * ncomp + 2]; + linear[1] = scanline[x * ncomp + 1]; + linear[0] = scanline[x * ncomp + 0]; + break; + default: + linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; + break; + } - fixed (byte* d = std_dc_chrominance_values) - { - s.func(s.context, d, std_dc_chrominance_values.Length); + stbiw__linear_to_rgbe(rgbe, linear); + s.func(s.context, rgbe, 4); } - - stbiw__putc(s, 0x11); - fixed (byte* a = &std_ac_chrominance_nrcodes[1]) + } + else + { + var c = 0; + var r = 0; + for (x = 0; x < width; x++) { - s.func(s.context, a, std_ac_chrominance_nrcodes.Length - 1); - } + switch (ncomp) + { + case 4: + case 3: + linear[2] = scanline[x * ncomp + 2]; + linear[1] = scanline[x * ncomp + 1]; + linear[0] = scanline[x * ncomp + 0]; + break; + default: + linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; + break; + } - fixed (byte* d = std_ac_chrominance_values) - { - s.func(s.context, d, std_ac_chrominance_values.Length); + stbiw__linear_to_rgbe(rgbe, linear); + scratch[x + width * 0] = rgbe[0]; + scratch[x + width * 1] = rgbe[1]; + scratch[x + width * 2] = rgbe[2]; + scratch[x + width * 3] = rgbe[3]; } - fixed (byte* h = head2) + s.func(s.context, scanlineheader, 4); + for (c = 0; c < 4; c++) { - s.func(s.context, h, head2.Length); - } - } + var comp = &scratch[width * c]; + x = 0; + while (x < width) + { + r = x; + while (r + 2 < width) + { + if (comp[r] == comp[r + 1] && comp[r] == comp[r + 2]) + break; + ++r; + } - { - var fillBits = stackalloc ushort[2]; - fillBits[0] = 0x7F; - fillBits[1] = 7; - var imageData = (byte*)data; - var DCY = 0; - var DCU = 0; - var DCV = 0; - var bitBuf = 0; - var bitCnt = 0; - var ofsG = comp > 2 ? 1 : 0; - var ofsB = comp > 2 ? 2 : 0; - var x = 0; - var y = 0; - var pos = 0; - var YDU = stackalloc float[64]; - var UDU = stackalloc float[64]; - var VDU = stackalloc float[64]; + if (r + 2 >= width) + r = width; + while (x < r) + { + var len = r - x; + if (len > 128) + len = 128; + stbiw__write_dump_data(s, len, &comp[x]); + x += len; + } - for (y = 0; y < height; y += 8) - for (x = 0; x < width; x += 8) - { - for (row = y, pos = 0; row < y + 8; ++row) + if (r + 2 < width) { - var clamped_row = row < height ? row : height - 1; - var base_p = (stbi__flip_vertically_on_write != 0 ? height - 1 - clamped_row : clamped_row) * - width * comp; - for (col = x; col < x + 8; ++col, ++pos) + while (r < width && comp[r] == comp[x]) ++r; + + while (x < r) { - float r = 0; - float g = 0; - float b = 0; - var p = base_p + (col < width ? col : width - 1) * comp; - r = imageData[p + 0]; - g = imageData[p + ofsG]; - b = imageData[p + ofsB]; - YDU[pos] = +0.29900f * r + 0.58700f * g + 0.11400f * b - 128; - UDU[pos] = -0.16874f * r - 0.33126f * g + 0.50000f * b; - VDU[pos] = +0.50000f * r - 0.41869f * g - 0.08131f * b; + var len = r - x; + if (len > 127) + len = 127; + stbiw__write_run_data(s, len, comp[x]); + x += len; } } + } + } + } + } + + public static void stbiw__write_pixel(stbi__write_context s, int rgb_dir, int comp, int write_alpha, + int expand_mono, byte* d) + { + var bg = stackalloc byte[] { 255, 0, 255 }; + var px = stackalloc byte[3]; + var k = 0; + if (write_alpha < 0) + stbiw__write1(s, d[comp - 1]); + switch (comp) + { + case 2: + case 1: + if (expand_mono != 0) + stbiw__write3(s, d[0], d[0], d[0]); + else + stbiw__write1(s, d[0]); + break; + case 4: + case 3: + if (comp == 4 && write_alpha == 0) + { + for (k = 0; k < 3; ++k) px[k] = (byte)(bg[k] + (d[k] - bg[k]) * d[3] / 255); - DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, YDU, fdtbl_Y, DCY, YDC_HT, YAC_HT); - DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, UDU, fdtbl_UV, DCU, UVDC_HT, UVAC_HT); - DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, VDU, fdtbl_UV, DCV, UVDC_HT, UVAC_HT); + stbiw__write3(s, px[1 - rgb_dir], px[1], px[1 + rgb_dir]); + break; } - stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits[0], fillBits[1]); + stbiw__write3(s, d[1 - rgb_dir], d[1], d[1 + rgb_dir]); + break; } - stbiw__putc(s, 0xFF); - stbiw__putc(s, 0xD9); - return 1; + if (write_alpha > 0) + stbiw__write1(s, d[comp - 1]); + } + + public static void stbiw__write_pixels(stbi__write_context s, int rgb_dir, int vdir, int x, int y, int comp, + void* data, int write_alpha, int scanline_pad, int expand_mono) + { + uint zero = 0; + var i = 0; + var j = 0; + var j_end = 0; + if (y <= 0) + return; + if (stbi__flip_vertically_on_write != 0) + vdir *= -1; + if (vdir < 0) + { + j_end = -1; + j = y - 1; + } + else + { + j_end = y; + j = 0; + } + + for (; j != j_end; j += vdir) + { + for (i = 0; i < x; ++i) + { + var d = (byte*)data + (j * x + i) * comp; + stbiw__write_pixel(s, rgb_dir, comp, write_alpha, expand_mono, d); + } + + stbiw__write_flush(s); + s.func(s.context, &zero, scanline_pad); + } + } + + public static void stbiw__write_run_data(stbi__write_context s, int length, byte databyte) + { + var lengthbyte = (byte)((length + 128) & 0xff); + s.func(s.context, &lengthbyte, 1); + s.func(s.context, &databyte, 1); + } + + public static void stbiw__write1(stbi__write_context s, byte a) + { + if ((ulong)s.buf_used + 1 > 64 * sizeof(byte)) + stbiw__write_flush(s); + s.buffer[s.buf_used++] = a; + } + + public static void stbiw__write3(stbi__write_context s, byte a, byte b, byte c) + { + var n = 0; + if ((ulong)s.buf_used + 3 > 64 * sizeof(byte)) + stbiw__write_flush(s); + n = s.buf_used; + s.buf_used = n + 3; + s.buffer[n + 0] = a; + s.buffer[n + 1] = b; + s.buffer[n + 2] = c; + } + + public static uint stbiw__zhash(byte* data) + { + var hash = (uint)(data[0] + (data[1] << 8) + (data[2] << 16)); + hash ^= hash << 3; + hash += hash >> 5; + hash ^= hash << 4; + hash += hash >> 17; + hash ^= hash << 25; + hash += hash >> 6; + return hash; + } + + public static int stbiw__zlib_bitrev(int code, int codebits) + { + var res = 0; + while (codebits-- != 0) + { + res = (res << 1) | (code & 1); + code >>= 1; + } + + return res; + } + + public static uint stbiw__zlib_countm(byte* a, byte* b, int limit) + { + var i = 0; + for (i = 0; i < limit && i < 258; ++i) + if (a[i] != b[i]) + break; + + return (uint)i; + } + + public static byte* stbiw__zlib_flushf(byte* data, uint* bitbuffer, int* bitcount) + { + while (*bitcount >= 8) + { + if (data == null || ((int*)data - 2)[1] + 1 >= ((int*)data - 2)[0]) + stbiw__sbgrowf((void**)&data, 1, sizeof(byte)); + + data[((int*)data - 2)[1]++] = (byte)(*bitbuffer & 0xff); + *bitbuffer >>= 8; + *bitcount -= 8; + } + + return data; + } + + public class stbi__write_context + { + public int buf_used; + public byte* buffer; + public UnsafeArray1D bufferArray = new UnsafeArray1D(64); + public void* context; + public delegate0 func; + + public stbi__write_context() + { + buffer = (byte*)bufferArray; + } } - } + } } \ No newline at end of file diff --git a/src/StbImageWrite.cs b/src/StbImageWrite.cs index fd00003..cee2d93 100644 --- a/src/StbImageWrite.cs +++ b/src/StbImageWrite.cs @@ -1,4 +1,5 @@ -using System.Text; +using System; +using System.Text; namespace StbImageWriteSharp { @@ -9,22 +10,6 @@ namespace StbImageWriteSharp #endif static unsafe partial class StbImageWrite { - public static int stbi_write_tga_with_rle = 1; - - public delegate int WriteCallback(void* context, void* data, int size); - - public class stbi__write_context - { - public WriteCallback func; - public void* context; - } - - public static void stbi__start_write_callbacks(stbi__write_context s, WriteCallback c, void* context) - { - s.func = c; - s.context = context; - } - public static void stbiw__writefv(stbi__write_context s, string fmt, params object[] v) { var vindex = 0; @@ -52,7 +37,7 @@ public static void stbiw__writefv(stbi__write_context s, string fmt, params obje } case '4': { - var x = (int) v[vindex++]; + var x = Convert.ToUInt32(v[vindex++]); var b = stackalloc byte[4]; b[0] = (byte) (x & 0xff); b[1] = (byte) ((x >> 8) & 0xff); @@ -83,76 +68,6 @@ public static int stbiw__outfile(stbi__write_context s, int rgb_dir, int vdir, i return 1; } - public static int stbi_write_bmp_to_func(WriteCallback func, - void* context, - int x, - int y, - int comp, - void* data - ) - { - var s = new stbi__write_context(); - stbi__start_write_callbacks(s, func, context); - return stbi_write_bmp_core(s, x, y, comp, data); - } - - public static int stbi_write_tga_to_func(WriteCallback func, - void* context, - int x, - int y, - int comp, - void* data - ) - { - var s = new stbi__write_context(); - stbi__start_write_callbacks(s, func, context); - return stbi_write_tga_core(s, x, y, comp, data); - } - - public static int stbi_write_hdr_to_func(WriteCallback func, - void* context, - int x, - int y, - int comp, - float* data - ) - { - stbi__write_context s = new stbi__write_context(); - stbi__start_write_callbacks(s, func, context); - return stbi_write_hdr_core(s, x, y, comp, data); - } - - public static int stbi_write_png_to_func(WriteCallback func, - void* context, - int x, - int y, - int comp, - void* data, - int stride_bytes - ) - { - int len; - var png = stbi_write_png_to_mem((byte*) (data), stride_bytes, x, y, comp, &len); - if (png == null) return 0; - func(context, png, len); - CRuntime.free(png); - return 1; - } - - public static int stbi_write_jpg_to_func(WriteCallback func, - void* context, - int x, - int y, - int comp, - void* data, - int quality - ) - { - stbi__write_context s = new stbi__write_context(); - stbi__start_write_callbacks(s, func, context); - return stbi_write_jpg_core(s, x, y, comp, data, quality); - } - public static int stbi_write_hdr_core(stbi__write_context s, int x, int y, int comp, float* data) { if ((y <= 0) || (x <= 0) || (data == null)) diff --git a/src/StbImageWriteSharp.csproj b/src/StbImageWriteSharp.csproj index 5a8fcae..b411140 100644 --- a/src/StbImageWriteSharp.csproj +++ b/src/StbImageWriteSharp.csproj @@ -1,17 +1,17 @@ - - StbImageWriteSharpTeam - StbImageWriteSharp - StbImageWriteSharp - netstandard2.0;net45 - C# port of the stb_image.h - Public Domain - https://github.com/StbSharp/StbImageWriteSharp - NU1701 - StbImageWriteSharp - StbImageWriteSharp - 1.0.0.0 - true - true - + + StbImageWriteSharpTeam + StbImageWriteSharp + StbImageWriteSharp + netstandard2.0;net45 + C# port of the stb_image_write.h + Public Domain + https://github.com/StbSharp/StbImageWriteSharp + 1.16.6 + true + + + + true + From 826084ea2b28d20a39a2dca56b39f48eff0dd961 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Tue, 4 Jan 2022 14:28:46 +0700 Subject: [PATCH 13/23] Final fixes --- StbImageWriteSharp.sln | 10 +- samples/Converter/Converter.csproj | 17 ++ samples/Converter/Program.cs | 116 ++++++++ src/Hebron.Runtime/CRuntime.cs | 262 ++++++++++++++++++ src/Hebron.Runtime/MemoryStats.cs | 26 ++ src/Hebron.Runtime/UnsafeArray1D.cs | 59 ++++ src/Hebron.Runtime/UnsafeArray2D.cs | 50 ++++ src/StbImageWrite.Generated.cs | 11 +- tests/StbImageWriteSharp.Testing/Program.cs | 14 +- .../StbImageWriteSharp.Testing.csproj | 27 +- .../packages.config | 2 +- 11 files changed, 563 insertions(+), 31 deletions(-) create mode 100644 samples/Converter/Converter.csproj create mode 100644 samples/Converter/Program.cs create mode 100644 src/Hebron.Runtime/CRuntime.cs create mode 100644 src/Hebron.Runtime/MemoryStats.cs create mode 100644 src/Hebron.Runtime/UnsafeArray1D.cs create mode 100644 src/Hebron.Runtime/UnsafeArray2D.cs diff --git a/StbImageWriteSharp.sln b/StbImageWriteSharp.sln index 3521f15..57a3a49 100644 --- a/StbImageWriteSharp.sln +++ b/StbImageWriteSharp.sln @@ -13,7 +13,7 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StbImageWriteSharp.Testing" EndProject Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Samples", "Samples", "{4C7B9C80-1AE4-47D7-943F-0866D3C05F5D}" EndProject -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Converter", "samples\Converter\Converter.csproj", "{1140E7EA-B7B1-4493-8070-5943F4EF1844}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Converter", "samples\Converter\Converter.csproj", "{1140E7EA-B7B1-4493-8070-5943F4EF1844}" EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution @@ -29,10 +29,10 @@ Global {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Debug|Any CPU.Build.0 = Debug|Any CPU {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Release|Any CPU.ActiveCfg = Release|Any CPU {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Release|Any CPU.Build.0 = Release|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.Build.0 = Debug|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.ActiveCfg = Release|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.Build.0 = Release|Any CPU + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.ActiveCfg = Debug|x86 + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.Build.0 = Debug|x86 + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.ActiveCfg = Release|x86 + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.Build.0 = Release|x86 {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Debug|Any CPU.ActiveCfg = Debug|Any CPU {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Debug|Any CPU.Build.0 = Debug|Any CPU {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Release|Any CPU.ActiveCfg = Release|Any CPU diff --git a/samples/Converter/Converter.csproj b/samples/Converter/Converter.csproj new file mode 100644 index 0000000..028aab7 --- /dev/null +++ b/samples/Converter/Converter.csproj @@ -0,0 +1,17 @@ + + + + Exe + net5.0 + AnyCPU + + + + + + + + + + + diff --git a/samples/Converter/Program.cs b/samples/Converter/Program.cs new file mode 100644 index 0000000..73c09e6 --- /dev/null +++ b/samples/Converter/Program.cs @@ -0,0 +1,116 @@ +using StbImageSharp; +using StbImageWriteSharp; +using System; +using System.IO; + +namespace Converter +{ + static class Program + { + private enum OutputType + { + Jpg, + Png, + Tga, + Bmp, + Hdr + } + + private static OutputType DetermineOutputType(string outputFile) + { + var ext = Path.GetExtension(outputFile); + if (string.IsNullOrEmpty(ext)) + { + throw new Exception("Output file lacks extension. Hence it is not possible to determine output file type"); + } + + if (ext.StartsWith(".")) + { + ext = ext.Substring(1); + } + + ext = ext.ToLower(); + + OutputType outputType; + switch (ext) + { + case "jpg": + case "jpeg": + outputType = OutputType.Jpg; + break; + case "png": + outputType = OutputType.Png; + break; + case "tga": + outputType = OutputType.Tga; + break; + case "bmp": + outputType = OutputType.Bmp; + break; + case "hdr": + outputType = OutputType.Hdr; + break; + default: + throw new Exception("Output format '" + ext + "' is not supported."); + } + + return outputType; + } + + private static void WriteOutputImage(string outputFile, OutputType outputType, int width, int height, byte[] bitmap) + { + Console.WriteLine("Writing {0}", outputFile); + using (var stream = new MemoryStream()) + { + var imageWriter = new ImageWriter(); + switch (outputType) + { + case OutputType.Jpg: + imageWriter.WriteJpg(bitmap, width, height, StbImageWriteSharp.ColorComponents.RedGreenBlueAlpha, stream, 100); + break; + case OutputType.Png: + imageWriter.WritePng(bitmap, width, height, StbImageWriteSharp.ColorComponents.RedGreenBlueAlpha, stream); + break; + case OutputType.Tga: + imageWriter.WriteTga(bitmap, width, height, StbImageWriteSharp.ColorComponents.RedGreenBlueAlpha, stream); + break; + case OutputType.Bmp: + imageWriter.WriteBmp(bitmap, width, height, StbImageWriteSharp.ColorComponents.RedGreenBlueAlpha, stream); + break; + case OutputType.Hdr: + imageWriter.WriteHdr(bitmap, width, height, StbImageWriteSharp.ColorComponents.RedGreenBlueAlpha, stream); + break; + } + + var save = stream.ToArray(); + File.WriteAllBytes(outputFile, save); + } + } + + + static void Main(string[] args) + { + if (args.Length < 2) + { + Console.WriteLine("Usage: MyraTexturePacker.exe "); + return; + } + + try + { + ImageResult image; + using (var stream = File.OpenRead(args[0])) + { + image = ImageResult.FromStream(stream, StbImageSharp.ColorComponents.RedGreenBlueAlpha); + } + + var outputType = DetermineOutputType(args[1]); + WriteOutputImage(args[1], outputType, image.Width, image.Height, image.Data); + } + catch (Exception ex) + { + Console.WriteLine(ex); + } + } + } +} \ No newline at end of file diff --git a/src/Hebron.Runtime/CRuntime.cs b/src/Hebron.Runtime/CRuntime.cs new file mode 100644 index 0000000..823b985 --- /dev/null +++ b/src/Hebron.Runtime/CRuntime.cs @@ -0,0 +1,262 @@ +using System; +using System.Runtime.InteropServices; + +namespace Hebron.Runtime +{ +#if !STBSHARP_INTERNAL + public +#else + internal +#endif + static unsafe class CRuntime + { + private static readonly string numbers = "0123456789"; + + public static void* malloc(ulong size) + { + return malloc((long)size); + } + + public static void* malloc(long size) + { + var ptr = Marshal.AllocHGlobal((int)size); + + MemoryStats.Allocated(); + + return ptr.ToPointer(); + } + + public static void free(void* a) + { + if (a == null) + return; + + var ptr = new IntPtr(a); + Marshal.FreeHGlobal(ptr); + MemoryStats.Freed(); + } + + public static void memcpy(void* a, void* b, long size) + { + var ap = (byte*)a; + var bp = (byte*)b; + for (long i = 0; i < size; ++i) + *ap++ = *bp++; + } + + public static void memcpy(void* a, void* b, ulong size) + { + memcpy(a, b, (long)size); + } + + public static void memmove(void* a, void* b, long size) + { + void* temp = null; + + try + { + temp = malloc(size); + memcpy(temp, b, size); + memcpy(a, temp, size); + } + + finally + { + if (temp != null) + free(temp); + } + } + + public static void memmove(void* a, void* b, ulong size) + { + memmove(a, b, (long)size); + } + + public static int memcmp(void* a, void* b, long size) + { + var result = 0; + var ap = (byte*)a; + var bp = (byte*)b; + for (long i = 0; i < size; ++i) + { + if (*ap != *bp) + result += 1; + + ap++; + bp++; + } + + return result; + } + + public static int memcmp(void* a, void* b, ulong size) + { + return memcmp(a, b, (long)size); + } + + public static int memcmp(byte* a, byte[] b, ulong size) + { + fixed (void* bptr = b) + { + return memcmp(a, bptr, (long)size); + } + } + + public static void memset(void* ptr, int value, long size) + { + var bptr = (byte*)ptr; + var bval = (byte)value; + for (long i = 0; i < size; ++i) + *bptr++ = bval; + } + + public static void memset(void* ptr, int value, ulong size) + { + memset(ptr, value, (long)size); + } + + public static uint _lrotl(uint x, int y) + { + return (x << y) | (x >> (32 - y)); + } + + public static void* realloc(void* a, long newSize) + { + if (a == null) + return malloc(newSize); + + var ptr = new IntPtr(a); + var result = Marshal.ReAllocHGlobal(ptr, new IntPtr(newSize)); + + return result.ToPointer(); + } + + public static void* realloc(void* a, ulong newSize) + { + return realloc(a, (long)newSize); + } + + public static int abs(int v) + { + return Math.Abs(v); + } + + public static double pow(double a, double b) + { + return Math.Pow(a, b); + } + + public static void SetArray(T[] data, T value) + { + for (var i = 0; i < data.Length; ++i) + data[i] = value; + } + + public static double ldexp(double number, int exponent) + { + return number * Math.Pow(2, exponent); + } + + public static int strcmp(sbyte* src, string token) + { + var result = 0; + + for (var i = 0; i < token.Length; ++i) + if (src[i] != token[i]) + ++result; + + return result; + } + + public static int strncmp(sbyte* src, string token, ulong size) + { + var result = 0; + + for (var i = 0; i < Math.Min(token.Length, (int)size); ++i) + if (src[i] != token[i]) + ++result; + + return result; + } + + public static long strtol(sbyte* start, sbyte** end, int radix) + { + // First step - determine length + var length = 0; + var ptr = start; + while (numbers.IndexOf((char)*ptr) != -1) + { + ++ptr; + ++length; + } + + long result = 0; + + // Now build up the number + ptr = start; + while (length > 0) + { + long num = numbers.IndexOf((char)*ptr); + var pow = (long)Math.Pow(10, length - 1); + result += num * pow; + + ++ptr; + --length; + } + + if (end != null) *end = ptr; + + return result; + } + + public static float fabs(double a) + { + return (float)Math.Abs(a); + } + + public static double ceil(double a) + { + return Math.Ceiling(a); + } + + public static double floor(double a) + { + return Math.Floor(a); + } + + public static double cos(double value) + { + return Math.Cos(value); + } + + public static double acos(double value) + { + return Math.Acos(value); + } + + public static double sin(double value) + { + return Math.Sin(value); + } + + public static double sqrt(double val) + { + return Math.Sqrt(val); + } + + public static double fmod(double x, double y) + { + return x % y; + } + + public static ulong strlen(sbyte* str) + { + var ptr = str; + + while (*ptr != '\0') + ptr++; + + return (ulong)ptr - (ulong)str - 1; + } + } +} \ No newline at end of file diff --git a/src/Hebron.Runtime/MemoryStats.cs b/src/Hebron.Runtime/MemoryStats.cs new file mode 100644 index 0000000..b5f1c5c --- /dev/null +++ b/src/Hebron.Runtime/MemoryStats.cs @@ -0,0 +1,26 @@ +using System.Threading; + +namespace Hebron.Runtime +{ +#if !STBSHARP_INTERNAL + public +#else + internal +#endif + static class MemoryStats + { + private static int _allocations; + + public static int Allocations => _allocations; + + internal static void Allocated() + { + Interlocked.Increment(ref _allocations); + } + + internal static void Freed() + { + Interlocked.Decrement(ref _allocations); + } + } +} \ No newline at end of file diff --git a/src/Hebron.Runtime/UnsafeArray1D.cs b/src/Hebron.Runtime/UnsafeArray1D.cs new file mode 100644 index 0000000..db816d2 --- /dev/null +++ b/src/Hebron.Runtime/UnsafeArray1D.cs @@ -0,0 +1,59 @@ +using System; +using System.Runtime.InteropServices; + +namespace Hebron.Runtime +{ +#if !STBSHARP_INTERNAL + public +#else + internal +#endif + unsafe class UnsafeArray1D where T : struct + { + private readonly T[] _data; + + internal GCHandle PinHandle { get; } + + public T this[int index] + { + get => _data[index]; + set => _data[index] = value; + } + + public UnsafeArray1D(int size) + { + if (size < 0) throw new ArgumentOutOfRangeException(nameof(size)); + + _data = new T[size]; + PinHandle = GCHandle.Alloc(_data, GCHandleType.Pinned); + } + + public UnsafeArray1D(T[] data, int sizeOf) + { + if (sizeOf <= 0) throw new ArgumentOutOfRangeException(nameof(sizeOf)); + + _data = data ?? throw new ArgumentNullException(nameof(data)); + PinHandle = GCHandle.Alloc(_data, GCHandleType.Pinned); + } + + ~UnsafeArray1D() + { + PinHandle.Free(); + } + + public void* ToPointer() + { + return PinHandle.AddrOfPinnedObject().ToPointer(); + } + + public static implicit operator void*(UnsafeArray1D array) + { + return array.ToPointer(); + } + + public static void* operator +(UnsafeArray1D array, int delta) + { + return array.ToPointer(); + } + } +} \ No newline at end of file diff --git a/src/Hebron.Runtime/UnsafeArray2D.cs b/src/Hebron.Runtime/UnsafeArray2D.cs new file mode 100644 index 0000000..6a420ec --- /dev/null +++ b/src/Hebron.Runtime/UnsafeArray2D.cs @@ -0,0 +1,50 @@ +using System.Runtime.InteropServices; + +namespace Hebron.Runtime +{ +#if !STBSHARP_INTERNAL + public +#else + internal +#endif + unsafe class UnsafeArray2D where T : struct + { + private readonly UnsafeArray1D[] _data; + private readonly long[] _pinAddresses; + private readonly GCHandle _pinAddressesHandle; + + public UnsafeArray1D this[int index] + { + get => _data[index]; + set => _data[index] = value; + } + + public UnsafeArray2D(int size1, int size2) + { + _data = new UnsafeArray1D[size1]; + _pinAddresses = new long[size1]; + for (var i = 0; i < size1; ++i) + { + _data[i] = new UnsafeArray1D(size2); + _pinAddresses[i] = _data[i].PinHandle.AddrOfPinnedObject().ToInt64(); + } + + _pinAddressesHandle = GCHandle.Alloc(_pinAddresses, GCHandleType.Pinned); + } + + ~UnsafeArray2D() + { + _pinAddressesHandle.Free(); + } + + public void* ToPointer() + { + return _pinAddressesHandle.AddrOfPinnedObject().ToPointer(); + } + + public static implicit operator void*(UnsafeArray2D array) + { + return array.ToPointer(); + } + } +} \ No newline at end of file diff --git a/src/StbImageWrite.Generated.cs b/src/StbImageWrite.Generated.cs index f83a6ea..7e23fa5 100644 --- a/src/StbImageWrite.Generated.cs +++ b/src/StbImageWrite.Generated.cs @@ -397,6 +397,8 @@ public static int stbi_write_jpg_core(stbi__write_context s, int width, int heig var Y = stackalloc float[256]; var U = stackalloc float[256]; var V = stackalloc float[256]; + var subU = stackalloc float[64]; + var subV = stackalloc float[64]; for (y = 0; y < height; y += 16) for (x = 0; x < width; x += 16) @@ -428,8 +430,6 @@ public static int stbi_write_jpg_core(stbi__write_context s, int width, int heig DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 136, 16, fdtbl_Y, DCY, stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); { - var subU = stackalloc float[64]; - var subV = stackalloc float[64]; var yy = 0; var xx = 0; for (yy = 0, pos = 0; yy < 8; ++yy) @@ -449,12 +449,13 @@ public static int stbi_write_jpg_core(stbi__write_context s, int width, int heig } else { + var Y = stackalloc float[64]; + var U = stackalloc float[64]; + var V = stackalloc float[64]; + for (y = 0; y < height; y += 8) for (x = 0; x < width; x += 8) { - var Y = stackalloc float[64]; - var U = stackalloc float[64]; - var V = stackalloc float[64]; for (row = y, pos = 0; row < y + 8; ++row) { var clamped_row = row < height ? row : height - 1; diff --git a/tests/StbImageWriteSharp.Testing/Program.cs b/tests/StbImageWriteSharp.Testing/Program.cs index b906576..044e1f9 100644 --- a/tests/StbImageWriteSharp.Testing/Program.cs +++ b/tests/StbImageWriteSharp.Testing/Program.cs @@ -142,15 +142,16 @@ private static void ThreadProc(string f) if (save.Length != save2.Length) { - throw new Exception(string.Format("Inconsistent output size: StbSharp={0}, Stb.Native={1}", - save.Length, save2.Length)); + throw new Exception(string.Format("Inconsistent output size('{0}'): StbSharp={1}, Stb.Native={2}", + f, save.Length, save2.Length)); } for (var i = 0; i < save.Length; ++i) { if (save[i] != save2[i]) { - throw new Exception(string.Format("Inconsistent data: index={0}, StbSharp={1}, Stb.Native={2}", + throw new Exception(string.Format("Inconsistent data('{0}'): index={1}, StbSharp={2}, Stb.Native={3}", + f, i, (int) save[i], (int) save2[i])); @@ -195,15 +196,16 @@ private static void ThreadProc(string f) if (save.Length != save2.Length) { - throw new Exception(string.Format("Inconsistent output size: StbSharp={0}, Stb.Native={1}", - save.Length, save2.Length)); + throw new Exception(string.Format("Inconsistent output size('{0}'): StbSharp={1}, Stb.Native={2}", + f, save.Length, save2.Length)); } for (var i = 0; i < save.Length; ++i) { if (save[i] != save2[i]) { - throw new Exception(string.Format("Inconsistent data: index={0}, StbSharp={1}, Stb.Native={2}", + throw new Exception(string.Format("Inconsistent data('{0}'): index={1}, StbSharp={2}, Stb.Native={3}", + f, i, (int) save[i], (int) save2[i])); diff --git a/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj b/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj index ca47267..4159e6c 100644 --- a/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj +++ b/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj @@ -12,28 +12,27 @@ 512 true - - AnyCPU + true - full - false - bin\Debug\ + bin\x86\Debug\ DEBUG;TRACE + full + x86 + 7.3 prompt - 4 - - AnyCPU - pdbonly - true - bin\Release\ + + bin\x86\Release\ TRACE + true + pdbonly + x86 + 7.3 prompt - 4 - - ..\..\packages\StbImageSharp.2.22.4\lib\net45\StbImageSharp.dll + + ..\..\packages\StbImageSharp.2.27.7\lib\net45\StbImageSharp.dll diff --git a/tests/StbImageWriteSharp.Testing/packages.config b/tests/StbImageWriteSharp.Testing/packages.config index 199ab01..2f8f610 100644 --- a/tests/StbImageWriteSharp.Testing/packages.config +++ b/tests/StbImageWriteSharp.Testing/packages.config @@ -1,4 +1,4 @@  - + \ No newline at end of file From 24fc559be237b00abaca44c028f06fe9037cb276 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Tue, 4 Jan 2022 14:29:15 +0700 Subject: [PATCH 14/23] Small fix --- tests/Stb.Native/Stb.Native.h | 1 - 1 file changed, 1 deletion(-) diff --git a/tests/Stb.Native/Stb.Native.h b/tests/Stb.Native/Stb.Native.h index fa015ae..c31348b 100644 --- a/tests/Stb.Native/Stb.Native.h +++ b/tests/Stb.Native/Stb.Native.h @@ -12,7 +12,6 @@ using namespace System::Threading; #include #include -#define STBI_WRITE_NO_STDIO #define STB_IMAGE_WRITE_IMPLEMENTATION #define STB_IMAGE_WRITE_STATIC #include "../../generation/StbImageWriteSharp.Generator/stb_image_write.h" From 22f093e86478d3474291741b6012f37330ed0d4f Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Wed, 5 Jan 2022 06:35:56 +0700 Subject: [PATCH 15/23] More testing --- StbImageWriteSharp.sln | 37 +++-- tests/NativeConverter/NativeConverter.csproj | 22 +++ tests/NativeConverter/Program.cs | 129 +++++++++++++++ tests/StbImageWriteSharp.Testing/Program.cs | 150 ++++++++---------- .../Properties/AssemblyInfo.cs | 36 ----- .../StbImageWriteSharp.Testing.csproj | 60 +------ .../packages.config | 4 - 7 files changed, 248 insertions(+), 190 deletions(-) create mode 100644 tests/NativeConverter/NativeConverter.csproj create mode 100644 tests/NativeConverter/Program.cs delete mode 100644 tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs delete mode 100644 tests/StbImageWriteSharp.Testing/packages.config diff --git a/StbImageWriteSharp.sln b/StbImageWriteSharp.sln index 57a3a49..6d3f655 100644 --- a/StbImageWriteSharp.sln +++ b/StbImageWriteSharp.sln @@ -5,46 +5,59 @@ VisualStudioVersion = 16.0.30309.148 MinimumVisualStudioVersion = 10.0.40219.1 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Tests", "Tests", "{AD5041AC-C96B-42F8-BC8C-BFFD2090B364}" EndProject -Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Stb.Native", "tests\Stb.Native\Stb.Native.vcxproj", "{EA7B8121-942A-437D-85D5-E4D55B94E88A}" -EndProject Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "StbImageWriteSharp", "src\StbImageWriteSharp.csproj", "{FFAF08E6-C453-444A-BC9A-D0E690F65AD0}" EndProject -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StbImageWriteSharp.Testing", "tests\StbImageWriteSharp.Testing\StbImageWriteSharp.Testing.csproj", "{4295DB99-F5C5-4D33-84DA-02AA2CA141B6}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "StbImageWriteSharp.Testing", "tests\StbImageWriteSharp.Testing\StbImageWriteSharp.Testing.csproj", "{4295DB99-F5C5-4D33-84DA-02AA2CA141B6}" EndProject Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Samples", "Samples", "{4C7B9C80-1AE4-47D7-943F-0866D3C05F5D}" EndProject Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Converter", "samples\Converter\Converter.csproj", "{1140E7EA-B7B1-4493-8070-5943F4EF1844}" EndProject +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Stb.Native", "tests\Stb.Native\Stb.Native.vcxproj", "{EA7B8121-942A-437D-85D5-E4D55B94E88A}" +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "NativeConverter", "tests\NativeConverter\NativeConverter.csproj", "{7E764E9B-A699-4801-ADEF-0CBF1268A656}" +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "StbImageSharp", "..\StbImageSharp\src\StbImageSharp.csproj", "{B33B807C-109A-444F-998B-6D552802A69B}" +EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug|Any CPU = Debug|Any CPU Release|Any CPU = Release|Any CPU EndGlobalSection GlobalSection(ProjectConfigurationPlatforms) = postSolution - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|Any CPU.ActiveCfg = Debug|Win32 - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|Any CPU.Build.0 = Debug|Win32 - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|Any CPU.ActiveCfg = Release|Win32 - {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|Any CPU.Build.0 = Release|Win32 {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Debug|Any CPU.Build.0 = Debug|Any CPU {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Release|Any CPU.ActiveCfg = Release|Any CPU {FFAF08E6-C453-444A-BC9A-D0E690F65AD0}.Release|Any CPU.Build.0 = Release|Any CPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.ActiveCfg = Debug|x86 - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.Build.0 = Debug|x86 - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.ActiveCfg = Release|x86 - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.Build.0 = Release|x86 + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Debug|Any CPU.Build.0 = Debug|Any CPU + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.ActiveCfg = Release|Any CPU + {4295DB99-F5C5-4D33-84DA-02AA2CA141B6}.Release|Any CPU.Build.0 = Release|Any CPU {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Debug|Any CPU.ActiveCfg = Debug|Any CPU {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Debug|Any CPU.Build.0 = Debug|Any CPU {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Release|Any CPU.ActiveCfg = Release|Any CPU {1140E7EA-B7B1-4493-8070-5943F4EF1844}.Release|Any CPU.Build.0 = Release|Any CPU + {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|Any CPU.ActiveCfg = Debug|Win32 + {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|Any CPU.Build.0 = Debug|Win32 + {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|Any CPU.ActiveCfg = Release|Win32 + {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|Any CPU.Build.0 = Release|Win32 + {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Debug|Any CPU.ActiveCfg = Debug|x86 + {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Debug|Any CPU.Build.0 = Debug|x86 + {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Release|Any CPU.ActiveCfg = Release|x86 + {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Release|Any CPU.Build.0 = Release|x86 + {B33B807C-109A-444F-998B-6D552802A69B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {B33B807C-109A-444F-998B-6D552802A69B}.Debug|Any CPU.Build.0 = Debug|Any CPU + {B33B807C-109A-444F-998B-6D552802A69B}.Release|Any CPU.ActiveCfg = Release|Any CPU + {B33B807C-109A-444F-998B-6D552802A69B}.Release|Any CPU.Build.0 = Release|Any CPU EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE EndGlobalSection GlobalSection(NestedProjects) = preSolution - {EA7B8121-942A-437D-85D5-E4D55B94E88A} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} {4295DB99-F5C5-4D33-84DA-02AA2CA141B6} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} {1140E7EA-B7B1-4493-8070-5943F4EF1844} = {4C7B9C80-1AE4-47D7-943F-0866D3C05F5D} + {EA7B8121-942A-437D-85D5-E4D55B94E88A} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} + {7E764E9B-A699-4801-ADEF-0CBF1268A656} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} EndGlobalSection GlobalSection(ExtensibilityGlobals) = postSolution SolutionGuid = {C9C812E7-F89A-4B6E-8F9D-981D5F8BBAB3} diff --git a/tests/NativeConverter/NativeConverter.csproj b/tests/NativeConverter/NativeConverter.csproj new file mode 100644 index 0000000..3cc17f0 --- /dev/null +++ b/tests/NativeConverter/NativeConverter.csproj @@ -0,0 +1,22 @@ + + + + Exe + net5.0 + x86 + + + + true + + + + true + + + + + + + + diff --git a/tests/NativeConverter/Program.cs b/tests/NativeConverter/Program.cs new file mode 100644 index 0000000..b8fbaa0 --- /dev/null +++ b/tests/NativeConverter/Program.cs @@ -0,0 +1,129 @@ +using StbImageSharp; +using StbNative; +using System; +using System.IO; + +namespace Converter +{ + static class Program + { + private enum OutputType + { + Jpg, + Png, + Tga, + Bmp, + Hdr + } + + private static OutputType DetermineOutputType(string outputFile) + { + var ext = Path.GetExtension(outputFile); + if (string.IsNullOrEmpty(ext)) + { + throw new Exception("Output file lacks extension. Hence it is not possible to determine output file type"); + } + + if (ext.StartsWith(".")) + { + ext = ext.Substring(1); + } + + ext = ext.ToLower(); + + OutputType outputType; + switch (ext) + { + case "jpg": + case "jpeg": + outputType = OutputType.Jpg; + break; + case "png": + outputType = OutputType.Png; + break; + case "tga": + outputType = OutputType.Tga; + break; + case "bmp": + outputType = OutputType.Bmp; + break; + case "hdr": + outputType = OutputType.Hdr; + break; + default: + throw new Exception("Output format '" + ext + "' is not supported."); + } + + return outputType; + } + + private static void WriteOutputImage(string outputFile, OutputType outputType, + int width, int height, int comp, byte[] bitmap, int jpgQuality) + { + Console.WriteLine("Writing {0}", outputFile); + using (var stream = new MemoryStream()) + { + switch (outputType) + { + case OutputType.Jpg: + Native.save_to_jpg(bitmap, width, height, comp, stream, jpgQuality); + break; + case OutputType.Png: + Native.save_to_stream(bitmap, width, height, comp, 3, stream); + break; + case OutputType.Tga: + Native.save_to_stream(bitmap, width, height, comp, 1, stream); + break; + case OutputType.Bmp: + Native.save_to_stream(bitmap, width, height, comp, 0, stream); + break; + case OutputType.Hdr: + Native.save_to_stream(bitmap, width, height, comp, 2, stream); + break; + } + + var save = stream.ToArray(); + File.WriteAllBytes(outputFile, save); + } + } + + + static void Main(string[] args) + { + if (args.Length < 2) + { + Console.WriteLine("Usage: NativeConverter.exe [jpgQuality]"); + return; + } + + try + { + ImageResult image; + using (var stream = File.OpenRead(args[0])) + { + image = ImageResult.FromStream(stream); + } + + var outputType = DetermineOutputType(args[1]); + + var jpgQuality = 90; + if (args.Length > 2) + { + jpgQuality = int.Parse(args[2]); + } + WriteOutputImage(args[1], outputType, image.Width, image.Height, + (int)image.Comp, image.Data, jpgQuality); + + // Load again + using (var stream = File.OpenRead(args[1])) + { + image = ImageResult.FromStream(stream); + } + } + catch (Exception ex) + { + Console.WriteLine(ex); + } + } + } +} \ No newline at end of file diff --git a/tests/StbImageWriteSharp.Testing/Program.cs b/tests/StbImageWriteSharp.Testing/Program.cs index 044e1f9..26bcfb2 100644 --- a/tests/StbImageWriteSharp.Testing/Program.cs +++ b/tests/StbImageWriteSharp.Testing/Program.cs @@ -6,7 +6,6 @@ using System.Threading.Tasks; using StbImageSharp; using StbImageWriteSharp; -using StbNative; namespace StbSharp.Tests { @@ -15,14 +14,11 @@ internal static class Program private static int tasksStarted; private static int filesProcessed; private static int stbSharpWrite; - private static int stbNativeWrite; private delegate void WriteDelegate(byte[] data, int width, int height, StbImageWriteSharp.ColorComponents components, Stream stream); - private const int LoadTries = 10; - private static readonly int[] JpgQualities = {1, 4, 8, 16, 25, 32, 50, 64, 72, 80, 90, 100}; - private static readonly string[] FormatNames = {"BMP", "TGA", "HDR", "PNG", "JPG"}; + private static readonly string[] FormatNames = {"BMP", "TGA", "PNG", "JPG", "HDR"}; public static void Log(string message) { @@ -69,6 +65,45 @@ public static bool RunTests(string imagesPath) return true; } + private static void EnsureEqual(string path, string outType, ImageResult image1, ImageResult image2, + bool testData) + { + path = Path.GetFileName(path); + + if (image1.Width != image2.Width) + { + throw new Exception(string.Format("Inconsistent width('{0}'|{1}): Width1={2}, Width={3}", + path, outType, image1.Width, image2.Width)); + } + + if (image1.Height != image2.Height) + { + throw new Exception(string.Format("Inconsistent height('{0}'|{1}): Height1={2}, Height={3}", + path, outType, image1.Height, image2.Height)); + } + + if (!testData) + { + return; + } + + if (image1.Comp != image2.Comp) + { + throw new Exception(string.Format("Inconsistent comp('{0}'|{1}): Comp1={2}, Comp2={3}", + path, outType, image1.Comp, image2.Comp)); + } + + for (var i = 0; i < image1.Data.Length; ++i) + { + var delta = image1.Data[i] - image2.Data[i]; + if (Math.Abs(delta) > 0) + { + throw new Exception(string.Format("Inconsistent data('{0}'|{1}): Index={2}, Byte1={3}, Byte2={4}", + path, outType, i, image1.Data[i], image2.Data[i])); + } + } + } + private static void ThreadProc(string f) { try @@ -88,26 +123,27 @@ private static void ThreadProc(string f) Log("----------------------------"); var image = ImageResult.FromMemory(data); - for (var k = 0; k <= 4; ++k) + for (var k = 0; k < FormatNames.Length; ++k) { - Log("Saving as {0} with StbSharp", FormatNames[k]); + var formatName = FormatNames[k]; + Log("Saving as {0}", formatName); - if (k < 4) + if (formatName != "JPG") { var writer = new ImageWriter(); WriteDelegate wd = null; - switch (k) + switch (formatName) { - case 0: + case "BMP": wd = writer.WriteBmp; break; - case 1: + case "TGA": wd = writer.WriteTga; break; - case 2: + case "HDR": wd = writer.WriteHdr; break; - case 3: + case "PNG": wd = writer.WritePng; break; } @@ -118,52 +154,32 @@ private static void ThreadProc(string f) { wd(image.Data, image.Width, image.Height, (StbImageWriteSharp.ColorComponents)image.Comp, stream); save = stream.ToArray(); - } - + } + var passed = EndWatch(sw); stbSharpWrite += passed; Log("Span: {0} ms", passed); - Log("StbSharp Size: {0}", save.Length); - - Log("Saving as {0} with Stb.Native", FormatNames[k]); - BeginWatch(sw); - byte[] save2; - using (var stream = new MemoryStream()) - { - Native.save_to_stream(image.Data, image.Width, image.Height, (int)image.Comp, k, stream); - save2 = stream.ToArray(); - } - - passed = EndWatch(sw); - stbNativeWrite += passed; - - Log("Span: {0} ms", passed); - Log("Stb.Native Size: {0}", save2.Length); - - if (save.Length != save2.Length) - { - throw new Exception(string.Format("Inconsistent output size('{0}'): StbSharp={1}, Stb.Native={2}", - f, save.Length, save2.Length)); + Log("StbSharp Size: {0}", save.Length); + + // Load back + var image2 = ImageResult.FromMemory(save); + + var testData = true; + if (formatName == "HDR" || + (formatName == "BMP" && (int)image.Comp <= (int)StbImageSharp.ColorComponents.GreyAlpha)) + { + // Skip testing, since greyalpha bmp is written in 3 colors + testData = false; } - for (var i = 0; i < save.Length; ++i) - { - if (save[i] != save2[i]) - { - throw new Exception(string.Format("Inconsistent data('{0}'): index={1}, StbSharp={2}, Stb.Native={3}", - f, - i, - (int) save[i], - (int) save2[i])); - } - } + EnsureEqual(f, FormatNames[k], image, image2, testData); } else { for (var qi = 0; qi < JpgQualities.Length; ++qi) { var quality = JpgQualities[qi]; - Log("Saving as JPG with StbSharp with quality={0}", quality); + Log("Saving as JPG with quality={0}", quality); byte[] save; BeginWatch(sw); using (var stream = new MemoryStream()) @@ -179,46 +195,16 @@ private static void ThreadProc(string f) Log("Span: {0} ms", passed); Log("StbSharp Size: {0}", save.Length); - Log("Saving as JPG with Stb.Native with quality={0}", quality); - BeginWatch(sw); - byte[] save2; - using (var stream = new MemoryStream()) - { - Native.save_to_jpg(image.Data, image.Width, image.Height, (int)image.Comp, stream, quality); - save2 = stream.ToArray(); - } - - passed = EndWatch(sw); - stbNativeWrite += passed; - - Log("Span: {0} ms", passed); - Log("Stb.Native Size: {0}", save2.Length); - - if (save.Length != save2.Length) - { - throw new Exception(string.Format("Inconsistent output size('{0}'): StbSharp={1}, Stb.Native={2}", - f, save.Length, save2.Length)); - } - - for (var i = 0; i < save.Length; ++i) - { - if (save[i] != save2[i]) - { - throw new Exception(string.Format("Inconsistent data('{0}'): index={1}, StbSharp={2}, Stb.Native={3}", - f, - i, - (int) save[i], - (int) save2[i])); - } - } + // Load back + var image2 = ImageResult.FromMemory(save); + EnsureEqual(f, FormatNames[k] + "/" + quality, image, image2, false); } } } Log("Total StbSharp Write Time: {0} ms", stbSharpWrite); - Log("Total Stb.Native Write Time: {0} ms", stbNativeWrite); Log("GC Memory: {0}", GC.GetTotalMemory(true)); - Log("Native Allocations: {0}", StbImageWriteSharp.MemoryStats.Allocations); + Log("Native Allocations: {0}", MemoryStats.Allocations); ++filesProcessed; Log(DateTime.Now.ToLongTimeString() + " -- " + " Files processed: " + filesProcessed); diff --git a/tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs b/tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs deleted file mode 100644 index 6df0829..0000000 --- a/tests/StbImageWriteSharp.Testing/Properties/AssemblyInfo.cs +++ /dev/null @@ -1,36 +0,0 @@ -using System.Reflection; -using System.Runtime.CompilerServices; -using System.Runtime.InteropServices; - -// General Information about an assembly is controlled through the following -// set of attributes. Change these attribute values to modify the information -// associated with an assembly. -[assembly: AssemblyTitle("StbImageSharp.Testing")] -[assembly: AssemblyDescription("")] -[assembly: AssemblyConfiguration("")] -[assembly: AssemblyCompany("")] -[assembly: AssemblyProduct("StbImageSharp.Testing")] -[assembly: AssemblyCopyright("Copyright © 2019")] -[assembly: AssemblyTrademark("")] -[assembly: AssemblyCulture("")] - -// Setting ComVisible to false makes the types in this assembly not visible -// to COM components. If you need to access a type in this assembly from -// COM, set the ComVisible attribute to true on that type. -[assembly: ComVisible(false)] - -// The following GUID is for the ID of the typelib if this project is exposed to COM -[assembly: Guid("1cba18d9-3b9b-4f6a-8729-3e88abc98c33")] - -// Version information for an assembly consists of the following four values: -// -// Major Version -// Minor Version -// Build Number -// Revision -// -// You can specify all the values or you can default the Build and Revision Numbers -// by using the '*' as shown below: -// [assembly: AssemblyVersion("1.0.*")] -[assembly: AssemblyVersion("1.0.0.0")] -[assembly: AssemblyFileVersion("1.0.0.0")] diff --git a/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj b/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj index 4159e6c..7b15f84 100644 --- a/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj +++ b/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj @@ -1,64 +1,12 @@ - - - + - Debug - AnyCPU - {4295DB99-F5C5-4D33-84DA-02AA2CA141B6} Exe - StbImageWriteSharp.Testing - StbImageWriteSharp.Testing - v4.5 - 512 - true + net5.0 - - true - bin\x86\Debug\ - DEBUG;TRACE - full - x86 - 7.3 - prompt - - - bin\x86\Release\ - TRACE - true - pdbonly - x86 - 7.3 - prompt - - - - ..\..\packages\StbImageSharp.2.27.7\lib\net45\StbImageSharp.dll - - - - - - - - - - - - - - - - {ffaf08e6-c453-444a-bc9a-d0e690f65ad0} - StbImageWriteSharp - - - {ea7b8121-942a-437d-85d5-e4d55b94e88a} - Stb.Native - + - + - \ No newline at end of file diff --git a/tests/StbImageWriteSharp.Testing/packages.config b/tests/StbImageWriteSharp.Testing/packages.config deleted file mode 100644 index 2f8f610..0000000 --- a/tests/StbImageWriteSharp.Testing/packages.config +++ /dev/null @@ -1,4 +0,0 @@ - - - - \ No newline at end of file From 0c7371f4874280a51447773fcd98621a4bf7cc06 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Wed, 5 Jan 2022 08:39:06 +0700 Subject: [PATCH 16/23] More fixes --- StbImageWriteSharp.sln | 6 ------ tests/NativeConverter/NativeConverter.csproj | 5 ++++- 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/StbImageWriteSharp.sln b/StbImageWriteSharp.sln index 6d3f655..b2a9ae9 100644 --- a/StbImageWriteSharp.sln +++ b/StbImageWriteSharp.sln @@ -17,8 +17,6 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Stb.Native", "tests\Stb.Nat EndProject Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "NativeConverter", "tests\NativeConverter\NativeConverter.csproj", "{7E764E9B-A699-4801-ADEF-0CBF1268A656}" EndProject -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "StbImageSharp", "..\StbImageSharp\src\StbImageSharp.csproj", "{B33B807C-109A-444F-998B-6D552802A69B}" -EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug|Any CPU = Debug|Any CPU @@ -45,10 +43,6 @@ Global {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Debug|Any CPU.Build.0 = Debug|x86 {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Release|Any CPU.ActiveCfg = Release|x86 {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Release|Any CPU.Build.0 = Release|x86 - {B33B807C-109A-444F-998B-6D552802A69B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU - {B33B807C-109A-444F-998B-6D552802A69B}.Debug|Any CPU.Build.0 = Debug|Any CPU - {B33B807C-109A-444F-998B-6D552802A69B}.Release|Any CPU.ActiveCfg = Release|Any CPU - {B33B807C-109A-444F-998B-6D552802A69B}.Release|Any CPU.Build.0 = Release|Any CPU EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE diff --git a/tests/NativeConverter/NativeConverter.csproj b/tests/NativeConverter/NativeConverter.csproj index 3cc17f0..3045924 100644 --- a/tests/NativeConverter/NativeConverter.csproj +++ b/tests/NativeConverter/NativeConverter.csproj @@ -15,7 +15,10 @@ - + + + + From 2b75a7d35526c9a1d2813e71ef5f2d2088cba1dd Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Wed, 29 Jun 2022 21:49:34 +0700 Subject: [PATCH 17/23] Converter improvements --- samples/Converter/Program.cs | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/samples/Converter/Program.cs b/samples/Converter/Program.cs index 73c09e6..e3d45ae 100644 --- a/samples/Converter/Program.cs +++ b/samples/Converter/Program.cs @@ -57,7 +57,7 @@ private static OutputType DetermineOutputType(string outputFile) return outputType; } - private static void WriteOutputImage(string outputFile, OutputType outputType, int width, int height, byte[] bitmap) + private static void WriteOutputImage(string outputFile, OutputType outputType, int width, int height, byte[] bitmap, int jpegQuality) { Console.WriteLine("Writing {0}", outputFile); using (var stream = new MemoryStream()) @@ -66,7 +66,7 @@ private static void WriteOutputImage(string outputFile, OutputType outputType, i switch (outputType) { case OutputType.Jpg: - imageWriter.WriteJpg(bitmap, width, height, StbImageWriteSharp.ColorComponents.RedGreenBlueAlpha, stream, 100); + imageWriter.WriteJpg(bitmap, width, height, StbImageWriteSharp.ColorComponents.RedGreenBlueAlpha, stream, jpegQuality); break; case OutputType.Png: imageWriter.WritePng(bitmap, width, height, StbImageWriteSharp.ColorComponents.RedGreenBlueAlpha, stream); @@ -92,7 +92,7 @@ static void Main(string[] args) { if (args.Length < 2) { - Console.WriteLine("Usage: MyraTexturePacker.exe "); + Console.WriteLine("Usage: Converter.exe [jpegQuality]"); return; } @@ -105,7 +105,14 @@ static void Main(string[] args) } var outputType = DetermineOutputType(args[1]); - WriteOutputImage(args[1], outputType, image.Width, image.Height, image.Data); + + var jpegQuality = 90; + if (args.Length > 2) + { + jpegQuality = int.Parse(args[2]); + } + + WriteOutputImage(args[1], outputType, image.Width, image.Height, image.Data, jpegQuality); } catch (Exception ex) { From 5510bbd01b3aea3ca7f7c794004f12f725964bd5 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Wed, 29 Jun 2022 22:07:46 +0700 Subject: [PATCH 18/23] Dropped target "net45" --- StbImageWriteSharp.sln | 11 +- samples/Converter/Converter.csproj | 3 +- src/Hebron.Runtime/CRuntime.cs | 7 +- src/Hebron.Runtime/MemoryStats.cs | 7 +- src/Hebron.Runtime/UnsafeArray1D.cs | 59 --- src/Hebron.Runtime/UnsafeArray2D.cs | 50 --- src/StbImageWrite.Generated.cs | 18 +- src/StbImageWriteSharp.csproj | 4 +- tests/NativeConverter/NativeConverter.csproj | 25 -- tests/NativeConverter/Program.cs | 129 ------- tests/Stb.Native/Stb.Native.vcxproj | 6 +- tests/StbImageWriteSharp.Testing/Program.cs | 354 +++++++++--------- .../StbImageWriteSharp.Testing.csproj | 2 +- 13 files changed, 197 insertions(+), 478 deletions(-) delete mode 100644 src/Hebron.Runtime/UnsafeArray1D.cs delete mode 100644 src/Hebron.Runtime/UnsafeArray2D.cs delete mode 100644 tests/NativeConverter/NativeConverter.csproj delete mode 100644 tests/NativeConverter/Program.cs diff --git a/StbImageWriteSharp.sln b/StbImageWriteSharp.sln index b2a9ae9..52dc072 100644 --- a/StbImageWriteSharp.sln +++ b/StbImageWriteSharp.sln @@ -1,7 +1,7 @@  Microsoft Visual Studio Solution File, Format Version 12.00 -# Visual Studio Version 16 -VisualStudioVersion = 16.0.30309.148 +# Visual Studio Version 17 +VisualStudioVersion = 17.1.32328.378 MinimumVisualStudioVersion = 10.0.40219.1 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Tests", "Tests", "{AD5041AC-C96B-42F8-BC8C-BFFD2090B364}" EndProject @@ -15,8 +15,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Converter", "samples\Conver EndProject Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Stb.Native", "tests\Stb.Native\Stb.Native.vcxproj", "{EA7B8121-942A-437D-85D5-E4D55B94E88A}" EndProject -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "NativeConverter", "tests\NativeConverter\NativeConverter.csproj", "{7E764E9B-A699-4801-ADEF-0CBF1268A656}" -EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug|Any CPU = Debug|Any CPU @@ -39,10 +37,6 @@ Global {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Debug|Any CPU.Build.0 = Debug|Win32 {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|Any CPU.ActiveCfg = Release|Win32 {EA7B8121-942A-437D-85D5-E4D55B94E88A}.Release|Any CPU.Build.0 = Release|Win32 - {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Debug|Any CPU.ActiveCfg = Debug|x86 - {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Debug|Any CPU.Build.0 = Debug|x86 - {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Release|Any CPU.ActiveCfg = Release|x86 - {7E764E9B-A699-4801-ADEF-0CBF1268A656}.Release|Any CPU.Build.0 = Release|x86 EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE @@ -51,7 +45,6 @@ Global {4295DB99-F5C5-4D33-84DA-02AA2CA141B6} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} {1140E7EA-B7B1-4493-8070-5943F4EF1844} = {4C7B9C80-1AE4-47D7-943F-0866D3C05F5D} {EA7B8121-942A-437D-85D5-E4D55B94E88A} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} - {7E764E9B-A699-4801-ADEF-0CBF1268A656} = {AD5041AC-C96B-42F8-BC8C-BFFD2090B364} EndGlobalSection GlobalSection(ExtensibilityGlobals) = postSolution SolutionGuid = {C9C812E7-F89A-4B6E-8F9D-981D5F8BBAB3} diff --git a/samples/Converter/Converter.csproj b/samples/Converter/Converter.csproj index 028aab7..00bcd8e 100644 --- a/samples/Converter/Converter.csproj +++ b/samples/Converter/Converter.csproj @@ -2,8 +2,7 @@ Exe - net5.0 - AnyCPU + net6.0 diff --git a/src/Hebron.Runtime/CRuntime.cs b/src/Hebron.Runtime/CRuntime.cs index 823b985..41301ef 100644 --- a/src/Hebron.Runtime/CRuntime.cs +++ b/src/Hebron.Runtime/CRuntime.cs @@ -3,12 +3,7 @@ namespace Hebron.Runtime { -#if !STBSHARP_INTERNAL - public -#else - internal -#endif - static unsafe class CRuntime + internal static unsafe class CRuntime { private static readonly string numbers = "0123456789"; diff --git a/src/Hebron.Runtime/MemoryStats.cs b/src/Hebron.Runtime/MemoryStats.cs index b5f1c5c..ddf45c7 100644 --- a/src/Hebron.Runtime/MemoryStats.cs +++ b/src/Hebron.Runtime/MemoryStats.cs @@ -2,12 +2,7 @@ namespace Hebron.Runtime { -#if !STBSHARP_INTERNAL - public -#else - internal -#endif - static class MemoryStats + internal static class MemoryStats { private static int _allocations; diff --git a/src/Hebron.Runtime/UnsafeArray1D.cs b/src/Hebron.Runtime/UnsafeArray1D.cs deleted file mode 100644 index db816d2..0000000 --- a/src/Hebron.Runtime/UnsafeArray1D.cs +++ /dev/null @@ -1,59 +0,0 @@ -using System; -using System.Runtime.InteropServices; - -namespace Hebron.Runtime -{ -#if !STBSHARP_INTERNAL - public -#else - internal -#endif - unsafe class UnsafeArray1D where T : struct - { - private readonly T[] _data; - - internal GCHandle PinHandle { get; } - - public T this[int index] - { - get => _data[index]; - set => _data[index] = value; - } - - public UnsafeArray1D(int size) - { - if (size < 0) throw new ArgumentOutOfRangeException(nameof(size)); - - _data = new T[size]; - PinHandle = GCHandle.Alloc(_data, GCHandleType.Pinned); - } - - public UnsafeArray1D(T[] data, int sizeOf) - { - if (sizeOf <= 0) throw new ArgumentOutOfRangeException(nameof(sizeOf)); - - _data = data ?? throw new ArgumentNullException(nameof(data)); - PinHandle = GCHandle.Alloc(_data, GCHandleType.Pinned); - } - - ~UnsafeArray1D() - { - PinHandle.Free(); - } - - public void* ToPointer() - { - return PinHandle.AddrOfPinnedObject().ToPointer(); - } - - public static implicit operator void*(UnsafeArray1D array) - { - return array.ToPointer(); - } - - public static void* operator +(UnsafeArray1D array, int delta) - { - return array.ToPointer(); - } - } -} \ No newline at end of file diff --git a/src/Hebron.Runtime/UnsafeArray2D.cs b/src/Hebron.Runtime/UnsafeArray2D.cs deleted file mode 100644 index 6a420ec..0000000 --- a/src/Hebron.Runtime/UnsafeArray2D.cs +++ /dev/null @@ -1,50 +0,0 @@ -using System.Runtime.InteropServices; - -namespace Hebron.Runtime -{ -#if !STBSHARP_INTERNAL - public -#else - internal -#endif - unsafe class UnsafeArray2D where T : struct - { - private readonly UnsafeArray1D[] _data; - private readonly long[] _pinAddresses; - private readonly GCHandle _pinAddressesHandle; - - public UnsafeArray1D this[int index] - { - get => _data[index]; - set => _data[index] = value; - } - - public UnsafeArray2D(int size1, int size2) - { - _data = new UnsafeArray1D[size1]; - _pinAddresses = new long[size1]; - for (var i = 0; i < size1; ++i) - { - _data[i] = new UnsafeArray1D(size2); - _pinAddresses[i] = _data[i].PinHandle.AddrOfPinnedObject().ToInt64(); - } - - _pinAddressesHandle = GCHandle.Alloc(_pinAddresses, GCHandleType.Pinned); - } - - ~UnsafeArray2D() - { - _pinAddressesHandle.Free(); - } - - public void* ToPointer() - { - return _pinAddressesHandle.AddrOfPinnedObject().ToPointer(); - } - - public static implicit operator void*(UnsafeArray2D array) - { - return array.ToPointer(); - } - } -} \ No newline at end of file diff --git a/src/StbImageWrite.Generated.cs b/src/StbImageWrite.Generated.cs index 7e23fa5..bd1e21d 100644 --- a/src/StbImageWrite.Generated.cs +++ b/src/StbImageWrite.Generated.cs @@ -1350,7 +1350,10 @@ public static void stbiw__write_flush(stbi__write_context s) { if (s.buf_used != 0) { - s.func(s.context, s.buffer, s.buf_used); + fixed (byte* bptr = s.buffer) + { + s.func(s.context, bptr, s.buf_used); + } s.buf_used = 0; } } @@ -1592,7 +1595,10 @@ public static uint stbiw__zlib_countm(byte* a, byte* b, int limit) if (data == null || ((int*)data - 2)[1] + 1 >= ((int*)data - 2)[0]) stbiw__sbgrowf((void**)&data, 1, sizeof(byte)); - data[((int*)data - 2)[1]++] = (byte)(*bitbuffer & 0xff); + var index = ((int*)data - 2)[1]++; + var value = (byte)(*bitbuffer & 0xff); + data[index] = value; + *bitbuffer >>= 8; *bitcount -= 8; } @@ -1603,15 +1609,9 @@ public static uint stbiw__zlib_countm(byte* a, byte* b, int limit) public class stbi__write_context { public int buf_used; - public byte* buffer; - public UnsafeArray1D bufferArray = new UnsafeArray1D(64); + public byte[] buffer = new byte[64]; public void* context; public delegate0 func; - - public stbi__write_context() - { - buffer = (byte*)bufferArray; - } } } } \ No newline at end of file diff --git a/src/StbImageWriteSharp.csproj b/src/StbImageWriteSharp.csproj index b411140..3a09adf 100644 --- a/src/StbImageWriteSharp.csproj +++ b/src/StbImageWriteSharp.csproj @@ -3,11 +3,11 @@ StbImageWriteSharpTeam StbImageWriteSharp StbImageWriteSharp - netstandard2.0;net45 + netstandard2.0 C# port of the stb_image_write.h Public Domain https://github.com/StbSharp/StbImageWriteSharp - 1.16.6 + 1.16.7 true diff --git a/tests/NativeConverter/NativeConverter.csproj b/tests/NativeConverter/NativeConverter.csproj deleted file mode 100644 index 3045924..0000000 --- a/tests/NativeConverter/NativeConverter.csproj +++ /dev/null @@ -1,25 +0,0 @@ - - - - Exe - net5.0 - x86 - - - - true - - - - true - - - - - - - - - - - diff --git a/tests/NativeConverter/Program.cs b/tests/NativeConverter/Program.cs deleted file mode 100644 index b8fbaa0..0000000 --- a/tests/NativeConverter/Program.cs +++ /dev/null @@ -1,129 +0,0 @@ -using StbImageSharp; -using StbNative; -using System; -using System.IO; - -namespace Converter -{ - static class Program - { - private enum OutputType - { - Jpg, - Png, - Tga, - Bmp, - Hdr - } - - private static OutputType DetermineOutputType(string outputFile) - { - var ext = Path.GetExtension(outputFile); - if (string.IsNullOrEmpty(ext)) - { - throw new Exception("Output file lacks extension. Hence it is not possible to determine output file type"); - } - - if (ext.StartsWith(".")) - { - ext = ext.Substring(1); - } - - ext = ext.ToLower(); - - OutputType outputType; - switch (ext) - { - case "jpg": - case "jpeg": - outputType = OutputType.Jpg; - break; - case "png": - outputType = OutputType.Png; - break; - case "tga": - outputType = OutputType.Tga; - break; - case "bmp": - outputType = OutputType.Bmp; - break; - case "hdr": - outputType = OutputType.Hdr; - break; - default: - throw new Exception("Output format '" + ext + "' is not supported."); - } - - return outputType; - } - - private static void WriteOutputImage(string outputFile, OutputType outputType, - int width, int height, int comp, byte[] bitmap, int jpgQuality) - { - Console.WriteLine("Writing {0}", outputFile); - using (var stream = new MemoryStream()) - { - switch (outputType) - { - case OutputType.Jpg: - Native.save_to_jpg(bitmap, width, height, comp, stream, jpgQuality); - break; - case OutputType.Png: - Native.save_to_stream(bitmap, width, height, comp, 3, stream); - break; - case OutputType.Tga: - Native.save_to_stream(bitmap, width, height, comp, 1, stream); - break; - case OutputType.Bmp: - Native.save_to_stream(bitmap, width, height, comp, 0, stream); - break; - case OutputType.Hdr: - Native.save_to_stream(bitmap, width, height, comp, 2, stream); - break; - } - - var save = stream.ToArray(); - File.WriteAllBytes(outputFile, save); - } - } - - - static void Main(string[] args) - { - if (args.Length < 2) - { - Console.WriteLine("Usage: NativeConverter.exe [jpgQuality]"); - return; - } - - try - { - ImageResult image; - using (var stream = File.OpenRead(args[0])) - { - image = ImageResult.FromStream(stream); - } - - var outputType = DetermineOutputType(args[1]); - - var jpgQuality = 90; - if (args.Length > 2) - { - jpgQuality = int.Parse(args[2]); - } - WriteOutputImage(args[1], outputType, image.Width, image.Height, - (int)image.Comp, image.Data, jpgQuality); - - // Load again - using (var stream = File.OpenRead(args[1])) - { - image = ImageResult.FromStream(stream); - } - } - catch (Exception ex) - { - Console.WriteLine(ex); - } - } - } -} \ No newline at end of file diff --git a/tests/Stb.Native/Stb.Native.vcxproj b/tests/Stb.Native/Stb.Native.vcxproj index 0f86591..dbcc9da 100644 --- a/tests/Stb.Native/Stb.Native.vcxproj +++ b/tests/Stb.Native/Stb.Native.vcxproj @@ -12,7 +12,7 @@ {EA7B8121-942A-437D-85D5-E4D55B94E88A} - v4.5 + v4.7.2 ManagedCProj StbNative 10.0 @@ -21,14 +21,14 @@ DynamicLibrary true - v142 + v143 true Unicode DynamicLibrary false - v142 + v143 true Unicode diff --git a/tests/StbImageWriteSharp.Testing/Program.cs b/tests/StbImageWriteSharp.Testing/Program.cs index 26bcfb2..7dc6f10 100644 --- a/tests/StbImageWriteSharp.Testing/Program.cs +++ b/tests/StbImageWriteSharp.Testing/Program.cs @@ -1,70 +1,70 @@ -using System; -using System.Diagnostics; -using System.IO; -using System.Linq; -using System.Threading; -using System.Threading.Tasks; +using System; +using System.Diagnostics; +using System.IO; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; using StbImageSharp; -using StbImageWriteSharp; - -namespace StbSharp.Tests -{ - internal static class Program - { - private static int tasksStarted; - private static int filesProcessed; - private static int stbSharpWrite; - - private delegate void WriteDelegate(byte[] data, int width, int height, StbImageWriteSharp.ColorComponents components, Stream stream); - - private static readonly int[] JpgQualities = {1, 4, 8, 16, 25, 32, 50, 64, 72, 80, 90, 100}; - private static readonly string[] FormatNames = {"BMP", "TGA", "PNG", "JPG", "HDR"}; - - public static void Log(string message) - { - Console.WriteLine(Thread.CurrentThread.ManagedThreadId + " -- " + message); - } - - public static void Log(string format, params object[] args) - { - Log(string.Format(format, args)); - } - - private static void BeginWatch(Stopwatch sw) - { - sw.Restart(); - } - - private static int EndWatch(Stopwatch sw) - { - sw.Stop(); - return (int) sw.ElapsedMilliseconds; - } - - public static bool RunTests(string imagesPath) - { - var files = Directory.EnumerateFiles(imagesPath, "*.*", SearchOption.AllDirectories).ToArray(); - Log("Files count: {0}", files.Length); - - foreach (var file in files) - { - Task.Factory.StartNew(() => { ThreadProc(file); }); - tasksStarted++; - } - - while (true) - { - Thread.Sleep(1000); - - if (tasksStarted == 0) - { - break; - } - } - - return true; - } - +using StbImageWriteSharp; + +namespace StbSharp.Tests +{ + internal static class Program + { + private static int tasksStarted; + private static int filesProcessed; + private static int stbSharpWrite; + + private delegate void WriteDelegate(byte[] data, int width, int height, StbImageWriteSharp.ColorComponents components, Stream stream); + + private static readonly int[] JpgQualities = {1, 4, 8, 16, 25, 32, 50, 64, 72, 80, 90, 100}; + private static readonly string[] FormatNames = {"BMP", "TGA", "PNG", "JPG", "HDR"}; + + public static void Log(string message) + { + Console.WriteLine(Thread.CurrentThread.ManagedThreadId + " -- " + message); + } + + public static void Log(string format, params object[] args) + { + Log(string.Format(format, args)); + } + + private static void BeginWatch(Stopwatch sw) + { + sw.Restart(); + } + + private static int EndWatch(Stopwatch sw) + { + sw.Stop(); + return (int) sw.ElapsedMilliseconds; + } + + public static bool RunTests(string imagesPath) + { + var files = Directory.EnumerateFiles(imagesPath, "*.*", SearchOption.AllDirectories).ToArray(); + Log("Files count: {0}", files.Length); + + foreach (var file in files) + { + Task.Factory.StartNew(() => { ThreadProc(file); }); + tasksStarted++; + } + + while (true) + { + Thread.Sleep(1000); + + if (tasksStarted == 0) + { + break; + } + } + + return true; + } + private static void EnsureEqual(string path, string outType, ImageResult image1, ImageResult image2, bool testData) { @@ -102,126 +102,126 @@ private static void EnsureEqual(string path, string outType, ImageResult image1, path, outType, i, image1.Data[i], image2.Data[i])); } } - } - - private static void ThreadProc(string f) - { - try - { - var sw = new Stopwatch(); - - if (!f.EndsWith(".bmp") && !f.EndsWith(".jpg") && !f.EndsWith(".png") && - !f.EndsWith(".jpg") && !f.EndsWith(".psd") && !f.EndsWith(".pic") && - !f.EndsWith(".tga")) - { - return; - } - - Log(string.Empty); - Log("{0} -- #{1}: Loading {2} into memory", DateTime.Now.ToLongTimeString(), filesProcessed, f); - var data = File.ReadAllBytes(f); - Log("----------------------------"); - var image = ImageResult.FromMemory(data); - - for (var k = 0; k < FormatNames.Length; ++k) - { - var formatName = FormatNames[k]; - Log("Saving as {0}", formatName); - - if (formatName != "JPG") - { - var writer = new ImageWriter(); - WriteDelegate wd = null; - switch (formatName) - { - case "BMP": - wd = writer.WriteBmp; - break; - case "TGA": - wd = writer.WriteTga; - break; - case "HDR": - wd = writer.WriteHdr; - break; - case "PNG": - wd = writer.WritePng; - break; - } - - byte[] save; - BeginWatch(sw); - using (var stream = new MemoryStream()) - { - wd(image.Data, image.Width, image.Height, (StbImageWriteSharp.ColorComponents)image.Comp, stream); - save = stream.ToArray(); + } + + private static void ThreadProc(string f) + { + try + { + var sw = new Stopwatch(); + + if (!f.EndsWith(".bmp") && !f.EndsWith(".jpg") && !f.EndsWith(".png") && + !f.EndsWith(".jpg") && !f.EndsWith(".psd") && !f.EndsWith(".pic") && + !f.EndsWith(".tga")) + { + return; + } + + Log(string.Empty); + Log("{0} -- #{1}: Loading {2} into memory", DateTime.Now.ToLongTimeString(), filesProcessed, f); + var data = File.ReadAllBytes(f); + Log("----------------------------"); + var image = ImageResult.FromMemory(data); + + for (var k = 0; k < FormatNames.Length; ++k) + { + var formatName = FormatNames[k]; + Log("Saving as {0}", formatName); + + if (formatName != "JPG") + { + var writer = new ImageWriter(); + WriteDelegate wd = null; + switch (formatName) + { + case "BMP": + wd = writer.WriteBmp; + break; + case "TGA": + wd = writer.WriteTga; + break; + case "HDR": + wd = writer.WriteHdr; + break; + case "PNG": + wd = writer.WritePng; + break; } - var passed = EndWatch(sw); - stbSharpWrite += passed; - Log("Span: {0} ms", passed); + byte[] save; + BeginWatch(sw); + using (var stream = new MemoryStream()) + { + wd(image.Data, image.Width, image.Height, (StbImageWriteSharp.ColorComponents)image.Comp, stream); + save = stream.ToArray(); + } + + var passed = EndWatch(sw); + stbSharpWrite += passed; + Log("Span: {0} ms", passed); Log("StbSharp Size: {0}", save.Length); // Load back - var image2 = ImageResult.FromMemory(save); - - var testData = true; + var image2 = ImageResult.FromMemory(save); + + var testData = true; if (formatName == "HDR" || (formatName == "BMP" && (int)image.Comp <= (int)StbImageSharp.ColorComponents.GreyAlpha)) { // Skip testing, since greyalpha bmp is written in 3 colors testData = false; - } - - EnsureEqual(f, FormatNames[k], image, image2, testData); - } - else - { - for (var qi = 0; qi < JpgQualities.Length; ++qi) - { - var quality = JpgQualities[qi]; - Log("Saving as JPG with quality={0}", quality); - byte[] save; - BeginWatch(sw); - using (var stream = new MemoryStream()) - { - var writer = new ImageWriter(); - writer.WriteJpg(image.Data, image.Width, image.Height, (StbImageWriteSharp.ColorComponents)image.Comp, stream, quality); - save = stream.ToArray(); - } - - var passed = EndWatch(sw); - stbSharpWrite += passed; - - Log("Span: {0} ms", passed); - Log("StbSharp Size: {0}", save.Length); - + } + + EnsureEqual(f, FormatNames[k], image, image2, testData); + } + else + { + for (var qi = 0; qi < JpgQualities.Length; ++qi) + { + var quality = JpgQualities[qi]; + Log("Saving as JPG with quality={0}", quality); + byte[] save; + BeginWatch(sw); + using (var stream = new MemoryStream()) + { + var writer = new ImageWriter(); + writer.WriteJpg(image.Data, image.Width, image.Height, (StbImageWriteSharp.ColorComponents)image.Comp, stream, quality); + save = stream.ToArray(); + } + + var passed = EndWatch(sw); + stbSharpWrite += passed; + + Log("Span: {0} ms", passed); + Log("StbSharp Size: {0}", save.Length); + // Load back var image2 = ImageResult.FromMemory(save); - EnsureEqual(f, FormatNames[k] + "/" + quality, image, image2, false); - } - } - } - - Log("Total StbSharp Write Time: {0} ms", stbSharpWrite); - Log("GC Memory: {0}", GC.GetTotalMemory(true)); - Log("Native Allocations: {0}", MemoryStats.Allocations); - - ++filesProcessed; - Log(DateTime.Now.ToLongTimeString() + " -- " + " Files processed: " + filesProcessed); - - } - catch (Exception ex) - { - Log("Error: " + ex.Message); - } - finally - { - --tasksStarted; - } - } - - public static int Main(string[] args) - { + EnsureEqual(f, FormatNames[k] + "/" + quality, image, image2, false); + } + } + } + + Log("Total StbSharp Write Time: {0} ms", stbSharpWrite); + Log("GC Memory: {0}", GC.GetTotalMemory(true)); + Log("Native Allocations: {0}", MemoryStats.Allocations); + + ++filesProcessed; + Log(DateTime.Now.ToLongTimeString() + " -- " + " Files processed: " + filesProcessed); + + } + catch (Exception ex) + { + Log("Error: " + ex.Message); + } + finally + { + --tasksStarted; + } + } + + public static int Main(string[] args) + { try { if (args == null || args.Length < 1) @@ -243,7 +243,7 @@ public static int Main(string[] args) { Console.WriteLine(ex); return 0; - } - } - } + } + } + } } \ No newline at end of file diff --git a/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj b/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj index 7b15f84..d2b9219 100644 --- a/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj +++ b/tests/StbImageWriteSharp.Testing/StbImageWriteSharp.Testing.csproj @@ -1,7 +1,7 @@  Exe - net5.0 + net6.0 From 4571180bafd20e7c2a58a93358339c6bf8877799 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Wed, 29 Jun 2022 22:26:33 +0700 Subject: [PATCH 19/23] Small fix --- src/StbImageWrite.cs | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/StbImageWrite.cs b/src/StbImageWrite.cs index cee2d93..4542b6c 100644 --- a/src/StbImageWrite.cs +++ b/src/StbImageWrite.cs @@ -10,6 +10,8 @@ namespace StbImageWriteSharp #endif static unsafe partial class StbImageWrite { + public static int NativeAllocations => MemoryStats.Allocations; + public static void stbiw__writefv(stbi__write_context s, string fmt, params object[] v) { var vindex = 0; From 276e0a0e389f8bcc79aa6fb4446ff825d0fdb2b4 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Wed, 29 Jun 2022 22:39:48 +0700 Subject: [PATCH 20/23] Added github build script --- .github/FUNDING.yml | 2 ++ .github/workflows/build-and-publish.yml | 23 +++++++++++++++++++++++ appveyor.yml | 21 --------------------- build_all.bat | 2 -- 4 files changed, 25 insertions(+), 23 deletions(-) create mode 100644 .github/FUNDING.yml create mode 100644 .github/workflows/build-and-publish.yml delete mode 100644 appveyor.yml delete mode 100644 build_all.bat diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml new file mode 100644 index 0000000..bec1481 --- /dev/null +++ b/.github/FUNDING.yml @@ -0,0 +1,2 @@ +patreon: rds1983 +custom: https://boosty.to/rds1983 \ No newline at end of file diff --git a/.github/workflows/build-and-publish.yml b/.github/workflows/build-and-publish.yml new file mode 100644 index 0000000..a8a8e6a --- /dev/null +++ b/.github/workflows/build-and-publish.yml @@ -0,0 +1,23 @@ +name: Build & Publish + +on: + workflow_dispatch: + +jobs: + BuildAndPublish: + runs-on: windows-latest + + steps: + - uses: actions/checkout@v2 + with: + submodules: recursive + - name: Setup .NET Core + uses: actions/setup-dotnet@v1 + with: + dotnet-version: '3.1.x' + - name: Build StbImageWriteSharp + run: dotnet build src\StbImageWriteSharp.csproj --configuration Release + - name: Install NuGet + uses: NuGet/setup-nuget@v1 + - name: Publish StbImageWriteSharp to NuGet + run: nuget.exe push src\bin\Release\StbImageWriteSharp.*.nupkg ${{secrets.NUGET_APIKEY}} -Source https://api.nuget.org/v3/index.json \ No newline at end of file diff --git a/appveyor.yml b/appveyor.yml deleted file mode 100644 index ce43ec3..0000000 --- a/appveyor.yml +++ /dev/null @@ -1,21 +0,0 @@ -version: 1.13.{build} -configuration: Release -dotnet_csproj: - patch: true - file: '**\*.csproj' - version: '{version}' - package_version: '{version}' - assembly_version: '{version}' - file_version: '{version}' - informational_version: '{version}' -build_script: -- cmd: >- - build_all.bat -artifacts: - - path: src/bin/Release/StbImageWriteSharp.$(appveyor_build_version).nupkg - name: StbImageWriteSharp.nupkg -deploy: - - provider: NuGet - api_key: - secure: o02Abc+1Pg/C7FVPnbCA9i4RIakmOUcKjMBBCHDCbEhS69b+N05mV0xBe0ne2/Y4 - artifact: /.*\.nupkg/ \ No newline at end of file diff --git a/build_all.bat b/build_all.bat deleted file mode 100644 index 3dc77fd..0000000 --- a/build_all.bat +++ /dev/null @@ -1,2 +0,0 @@ -dotnet --version -dotnet build src\StbImageWriteSharp.csproj /p:Configuration=Release --no-incremental From 51cb5859a7266e7115885c079757dd44ba8c1265 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Wed, 7 Sep 2022 05:36:44 +0700 Subject: [PATCH 21/23] Fixed the methods order --- .../StbImageWriteSharp.Generator/Program.cs | 110 +- src/StbImageWrite.Generated.cs | 1486 ++++++++--------- 2 files changed, 783 insertions(+), 813 deletions(-) diff --git a/generation/StbImageWriteSharp.Generator/Program.cs b/generation/StbImageWriteSharp.Generator/Program.cs index edb4269..e676564 100644 --- a/generation/StbImageWriteSharp.Generator/Program.cs +++ b/generation/StbImageWriteSharp.Generator/Program.cs @@ -1,18 +1,18 @@ using Hebron.Roslyn; using Microsoft.CodeAnalysis; -using System; +using System; using System.Collections.Generic; -using System.IO; +using System.IO; using System.Linq; using System.Text; - -namespace StbSharp.StbImage.Generator -{ - class Program - { + +namespace StbSharp.StbImage.Generator +{ + class Program + { private static string Write(Dictionary input) where T : SyntaxNode { - var keys = (from string k in input.Keys orderby k select k).ToArray(); + var keys = (from string k in input.Keys select k).ToArray(); var result = string.Empty; foreach (var key in keys) { @@ -28,34 +28,34 @@ private static string Write(Dictionary input) where T : SyntaxNode return result; } - - static void Process() - { - var parameters = new RoslynConversionParameters - { - InputPath = @"stb_image_write.h", - Defines = new[] - { - "STB_IMAGE_WRITE_IMPLEMENTATION", - "STB_IMAGE_WRITE_STATIC" - }, - SkipStructs = new string[] - { - }, - SkipGlobalVariables = new string[] - { - }, - SkipFunctions = new[] - { - "stbiw__writefv", - "stbiw__writef", - "stbiw__outfile", - }, - Classes = new string[] - { - }, - }; - + + static void Process() + { + var parameters = new RoslynConversionParameters + { + InputPath = @"stb_image_write.h", + Defines = new[] + { + "STB_IMAGE_WRITE_IMPLEMENTATION", + "STB_IMAGE_WRITE_STATIC" + }, + SkipStructs = new string[] + { + }, + SkipGlobalVariables = new string[] + { + }, + SkipFunctions = new[] + { + "stbiw__writefv", + "stbiw__writef", + "stbiw__outfile", + }, + Classes = new string[] + { + }, + }; + var result = RoslynCodeConverter.Convert(parameters); // Write output @@ -83,23 +83,23 @@ static void Process() // Post processing - File.WriteAllText(@"..\..\..\..\..\..\src\StbImageWrite.Generated.cs", data); - } - - static void Main(string[] args) - { - try - { - Process(); - } - catch (Exception ex) - { - Console.WriteLine(ex.Message); - Console.WriteLine(ex.StackTrace); - } - - Console.WriteLine("Finished. Press any key to quit."); - Console.ReadKey(); - } - } + File.WriteAllText(@"..\..\..\..\..\..\src\StbImageWrite.Generated.cs", data); + } + + static void Main(string[] args) + { + try + { + Process(); + } + catch (Exception ex) + { + Console.WriteLine(ex.Message); + Console.WriteLine(ex.StackTrace); + } + + Console.WriteLine("Finished. Press any key to quit."); + Console.ReadKey(); + } + } } \ No newline at end of file diff --git a/src/StbImageWrite.Generated.cs b/src/StbImageWrite.Generated.cs index bd1e21d..1f9ba8f 100644 --- a/src/StbImageWrite.Generated.cs +++ b/src/StbImageWrite.Generated.cs @@ -1,7 +1,5 @@ // Generated by Sichem at 1/4/2022 10:31:08 AM -using Hebron.Runtime; - namespace StbImageWriteSharp { unsafe partial class StbImageWrite @@ -215,36 +213,30 @@ unsafe partial class StbImageWrite 35, 36, 48, 49, 57, 58, 62, 63 }; - public static void stbi__start_write_callbacks(stbi__write_context s, delegate0 c, void* context) - { - s.func = c; - s.context = context; - } - - public static void stbi_flip_vertically_on_write(int flag) + public static int stbi_write_png_to_func(delegate0 func, void* context, int x, int y, int comp, void* data, + int stride_bytes) { - stbi__flip_vertically_on_write = flag; + var len = 0; + var png = stbi_write_png_to_mem((byte*)data, stride_bytes, x, y, comp, &len); + if (png == null) + return 0; + func(context, png, len); + CRuntime.free(png); + return 1; } - public static int stbi_write_bmp_core(stbi__write_context s, int x, int y, int comp, void* data) + public static int stbi_write_bmp_to_func(delegate0 func, void* context, int x, int y, int comp, void* data) { - if (comp != 4) - { - var pad = (-x * 3) & 3; - return stbiw__outfile(s, -1, -1, x, y, comp, 1, data, 0, pad, "11 4 22 44 44 22 444444", 66, 77, - 14 + 40 + (x * 3 + pad) * y, 0, 0, 14 + 40, 40, x, y, 1, 24, 0, 0, 0, 0, 0, 0); - } - - return stbiw__outfile(s, -1, -1, x, y, comp, 1, data, 1, 0, - "11 4 22 44 44 22 444444 4444 4 444 444 444 444", 66, 77, 14 + 108 + x * y * 4, 0, 0, 14 + 108, 108, x, - y, 1, 32, 3, 0, 0, 0, 0, 0, 0xff0000, 0xff00, 0xff, 0xff000000u, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); + var s = new stbi__write_context(); + stbi__start_write_callbacks(s, func, context); + return stbi_write_bmp_core(s, x, y, comp, data); } - public static int stbi_write_bmp_to_func(delegate0 func, void* context, int x, int y, int comp, void* data) + public static int stbi_write_tga_to_func(delegate0 func, void* context, int x, int y, int comp, void* data) { var s = new stbi__write_context(); stbi__start_write_callbacks(s, func, context); - return stbi_write_bmp_core(s, x, y, comp, data); + return stbi_write_tga_core(s, x, y, comp, data); } public static int stbi_write_hdr_to_func(delegate0 func, void* context, int x, int y, int comp, float* data) @@ -254,393 +246,144 @@ public static int stbi_write_hdr_to_func(delegate0 func, void* context, int x, i return stbi_write_hdr_core(s, x, y, comp, data); } - public static int stbi_write_jpg_core(stbi__write_context s, int width, int height, int comp, void* data, + public static int stbi_write_jpg_to_func(delegate0 func, void* context, int x, int y, int comp, void* data, int quality) { - var row = 0; - var col = 0; - var i = 0; - var k = 0; - var subsample = 0; - var fdtbl_Y = stackalloc float[64]; - var fdtbl_UV = stackalloc float[64]; - var YTable = stackalloc byte[64]; - var UVTable = stackalloc byte[64]; - if (data == null || width == 0 || height == 0 || comp > 4 || comp < 1) return 0; + var s = new stbi__write_context(); + stbi__start_write_callbacks(s, func, context); + return stbi_write_jpg_core(s, x, y, comp, data, quality); + } - quality = quality != 0 ? quality : 90; - subsample = quality <= 90 ? 1 : 0; - quality = quality < 1 ? 1 : quality > 100 ? 100 : quality; - quality = quality < 50 ? 5000 / quality : 200 - quality * 2; - for (i = 0; i < 64; ++i) - { - var uvti = 0; - var yti = (stbi_write_jpg_core_YQT[i] * quality + 50) / 100; - YTable[stbiw__jpg_ZigZag[i]] = (byte)(yti < 1 ? 1 : yti > 255 ? 255 : yti); - uvti = (stbi_write_jpg_core_UVQT[i] * quality + 50) / 100; - UVTable[stbiw__jpg_ZigZag[i]] = (byte)(uvti < 1 ? 1 : uvti > 255 ? 255 : uvti); - } + public static void stbi_flip_vertically_on_write(int flag) + { + stbi__flip_vertically_on_write = flag; + } - for (row = 0, k = 0; row < 8; ++row) - for (col = 0; col < 8; ++col, ++k) - { - fdtbl_Y[k] = 1 / (YTable[stbiw__jpg_ZigZag[k]] * stbi_write_jpg_core_aasf[row] * - stbi_write_jpg_core_aasf[col]); - fdtbl_UV[k] = 1 / (UVTable[stbiw__jpg_ZigZag[k]] * stbi_write_jpg_core_aasf[row] * - stbi_write_jpg_core_aasf[col]); - } + public static void stbi__start_write_callbacks(stbi__write_context s, delegate0 c, void* context) + { + s.func = c; + s.context = context; + } + public static void stbiw__write_flush(stbi__write_context s) + { + if (s.buf_used != 0) { - var head1 = stackalloc byte[] - { - 0xFF, - 0xC0, - 0, - 0x11, - 8, - (byte)(height >> 8), - (byte)(height & 0xff), - (byte)(width >> 8), - (byte)(width & 0xff), - 3, - 1, - (byte)(subsample != 0 ? 0x22 : 0x11), - 0, - 2, - 0x11, - 1, - 3, - 0x11, - 1, - 0xFF, - 0xC4, - 0x01, - 0xA2, - 0 - }; - fixed (byte* ptr = stbi_write_jpg_core_head0) - { - s.func(s.context, ptr, 25 * sizeof(byte)); - } - - s.func(s.context, YTable, 64 * sizeof(byte)); - stbiw__putc(s, 1); - s.func(s.context, UVTable, 64 * sizeof(byte)); - s.func(s.context, head1, 24 * sizeof(byte)); - fixed (byte* ptr = &stbi_write_jpg_core_std_dc_luminance_nrcodes[1]) + fixed (byte* bptr = s.buffer) { - s.func(s.context, ptr, 17 * sizeof(byte) - 1); + s.func(s.context, bptr, s.buf_used); } - fixed (byte* ptr = stbi_write_jpg_core_std_dc_luminance_values) - { - s.func(s.context, ptr, 12 * sizeof(byte)); - } + s.buf_used = 0; + } + } - stbiw__putc(s, 0x10); + public static void stbiw__putc(stbi__write_context s, byte c) + { + s.func(s.context, &c, 1); + } - fixed (byte* ptr = &stbi_write_jpg_core_std_ac_luminance_nrcodes[1]) - { - s.func(s.context, ptr, 17 * sizeof(byte) - 1); - } + public static void stbiw__write1(stbi__write_context s, byte a) + { + if ((ulong)s.buf_used + 1 > 64 * sizeof(byte)) + stbiw__write_flush(s); + s.buffer[s.buf_used++] = a; + } - fixed (byte* ptr = stbi_write_jpg_core_std_ac_luminance_values) - { - s.func(s.context, ptr, 162 * sizeof(byte)); - } + public static void stbiw__write3(stbi__write_context s, byte a, byte b, byte c) + { + var n = 0; + if ((ulong)s.buf_used + 3 > 64 * sizeof(byte)) + stbiw__write_flush(s); + n = s.buf_used; + s.buf_used = n + 3; + s.buffer[n + 0] = a; + s.buffer[n + 1] = b; + s.buffer[n + 2] = c; + } - stbiw__putc(s, 1); - fixed (byte* ptr = &stbi_write_jpg_core_std_dc_chrominance_nrcodes[1]) - { - s.func(s.context, ptr, 17 * sizeof(byte) - 1); - } + public static void stbiw__write_pixel(stbi__write_context s, int rgb_dir, int comp, int write_alpha, + int expand_mono, byte* d) + { + var bg = stackalloc byte[] { 255, 0, 255 }; + var px = stackalloc byte[3]; + var k = 0; + if (write_alpha < 0) + stbiw__write1(s, d[comp - 1]); + switch (comp) + { + case 2: + case 1: + if (expand_mono != 0) + stbiw__write3(s, d[0], d[0], d[0]); + else + stbiw__write1(s, d[0]); + break; + case 4: + case 3: + if (comp == 4 && write_alpha == 0) + { + for (k = 0; k < 3; ++k) + px[k] = (byte)(bg[k] + (d[k] - bg[k]) * d[3] / 255); + stbiw__write3(s, px[1 - rgb_dir], px[1], px[1 + rgb_dir]); + break; + } - fixed (byte* ptr = stbi_write_jpg_core_std_dc_chrominance_values) - { - s.func(s.context, ptr, 12 * sizeof(byte)); - } + stbiw__write3(s, d[1 - rgb_dir], d[1], d[1 + rgb_dir]); + break; + } - stbiw__putc(s, 0x11); + if (write_alpha > 0) + stbiw__write1(s, d[comp - 1]); + } - fixed (byte* ptr = &stbi_write_jpg_core_std_ac_chrominance_nrcodes[1]) - { - s.func(s.context, ptr, 17 * sizeof(byte) - 1); - } + public static void stbiw__write_pixels(stbi__write_context s, int rgb_dir, int vdir, int x, int y, int comp, + void* data, int write_alpha, int scanline_pad, int expand_mono) + { + uint zero = 0; + var i = 0; + var j = 0; + var j_end = 0; + if (y <= 0) + return; + if (stbi__flip_vertically_on_write != 0) + vdir *= -1; + if (vdir < 0) + { + j_end = -1; + j = y - 1; + } + else + { + j_end = y; + j = 0; + } - fixed (byte* ptr = stbi_write_jpg_core_std_ac_chrominance_values) + for (; j != j_end; j += vdir) + { + for (i = 0; i < x; ++i) { - s.func(s.context, ptr, 162 * sizeof(byte)); + var d = (byte*)data + (j * x + i) * comp; + stbiw__write_pixel(s, rgb_dir, comp, write_alpha, expand_mono, d); } - fixed (byte* ptr = stbi_write_jpg_core_head2) - { - s.func(s.context, ptr, 14 * sizeof(byte)); - } + stbiw__write_flush(s); + s.func(s.context, &zero, scanline_pad); } + } + public static int stbi_write_bmp_core(stbi__write_context s, int x, int y, int comp, void* data) + { + if (comp != 4) { - var DCY = 0; - var DCU = 0; - var DCV = 0; - var bitBuf = 0; - var bitCnt = 0; - var ofsG = comp > 2 ? 1 : 0; - var ofsB = comp > 2 ? 2 : 0; - var dataR = (byte*)data; - var dataG = dataR + ofsG; - var dataB = dataR + ofsB; - var x = 0; - var y = 0; - var pos = 0; - if (subsample != 0) - { - var Y = stackalloc float[256]; - var U = stackalloc float[256]; - var V = stackalloc float[256]; - var subU = stackalloc float[64]; - var subV = stackalloc float[64]; - - for (y = 0; y < height; y += 16) - for (x = 0; x < width; x += 16) - { - for (row = y, pos = 0; row < y + 16; ++row) - { - var clamped_row = row < height ? row : height - 1; - var base_p = - (stbi__flip_vertically_on_write != 0 ? height - 1 - clamped_row : clamped_row) * width * - comp; - for (col = x; col < x + 16; ++col, ++pos) - { - var p = base_p + (col < width ? col : width - 1) * comp; - float r = dataR[p]; - float g = dataG[p]; - float b = dataB[p]; - Y[pos] = +0.29900f * r + 0.58700f * g + 0.11400f * b - 128; - U[pos] = -0.16874f * r - 0.33126f * g + 0.50000f * b; - V[pos] = +0.50000f * r - 0.41869f * g - 0.08131f * b; - } - } - - DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 0, 16, fdtbl_Y, DCY, - stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); - DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 8, 16, fdtbl_Y, DCY, - stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); - DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 128, 16, fdtbl_Y, DCY, - stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); - DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 136, 16, fdtbl_Y, DCY, - stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); - { - var yy = 0; - var xx = 0; - for (yy = 0, pos = 0; yy < 8; ++yy) - for (xx = 0; xx < 8; ++xx, ++pos) - { - var j = yy * 32 + xx * 2; - subU[pos] = (U[j + 0] + U[j + 1] + U[j + 16] + U[j + 17]) * 0.25f; - subV[pos] = (V[j + 0] + V[j + 1] + V[j + 16] + V[j + 17]) * 0.25f; - } - - DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subU, 8, fdtbl_UV, DCU, - stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); - DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subV, 8, fdtbl_UV, DCV, - stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); - } - } - } - else - { - var Y = stackalloc float[64]; - var U = stackalloc float[64]; - var V = stackalloc float[64]; - - for (y = 0; y < height; y += 8) - for (x = 0; x < width; x += 8) - { - for (row = y, pos = 0; row < y + 8; ++row) - { - var clamped_row = row < height ? row : height - 1; - var base_p = - (stbi__flip_vertically_on_write != 0 ? height - 1 - clamped_row : clamped_row) * width * - comp; - for (col = x; col < x + 8; ++col, ++pos) - { - var p = base_p + (col < width ? col : width - 1) * comp; - float r = dataR[p]; - float g = dataG[p]; - float b = dataB[p]; - Y[pos] = +0.29900f * r + 0.58700f * g + 0.11400f * b - 128; - U[pos] = -0.16874f * r - 0.33126f * g + 0.50000f * b; - V[pos] = +0.50000f * r - 0.41869f * g - 0.08131f * b; - } - } - - DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y, 8, fdtbl_Y, DCY, stbi_write_jpg_core_YDC_HT, - stbi_write_jpg_core_YAC_HT); - DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, U, 8, fdtbl_UV, DCU, - stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); - DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, V, 8, fdtbl_UV, DCV, - stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); - } - } - - stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, - stbi_write_jpg_core_fillBits[0], - stbi_write_jpg_core_fillBits[1]); - } - - stbiw__putc(s, 0xFF); - stbiw__putc(s, 0xD9); - return 1; - } - - public static int stbi_write_jpg_to_func(delegate0 func, void* context, int x, int y, int comp, void* data, - int quality) - { - var s = new stbi__write_context(); - stbi__start_write_callbacks(s, func, context); - return stbi_write_jpg_core(s, x, y, comp, data, quality); - } - - public static int stbi_write_png_to_func(delegate0 func, void* context, int x, int y, int comp, void* data, - int stride_bytes) - { - var len = 0; - var png = stbi_write_png_to_mem((byte*)data, stride_bytes, x, y, comp, &len); - if (png == null) - return 0; - func(context, png, len); - CRuntime.free(png); - return 1; - } - - public static byte* stbi_write_png_to_mem(byte* pixels, int stride_bytes, int x, int y, int n, int* out_len) - { - var force_filter = stbi_write_force_png_filter; - var ctype = stackalloc int[] { -1, 0, 4, 2, 6 }; - var sig = stackalloc byte[] { 137, 80, 78, 71, 13, 10, 26, 10 }; - byte* _out_; - byte* o; - byte* filt; - byte* zlib; - sbyte* line_buffer; - var j = 0; - var zlen = 0; - if (stride_bytes == 0) - stride_bytes = x * n; - if (force_filter >= 5) force_filter = -1; - - filt = (byte*)CRuntime.malloc((ulong)((x * n + 1) * y)); - if (filt == null) - return null; - line_buffer = (sbyte*)CRuntime.malloc((ulong)(x * n)); - if (line_buffer == null) - { - CRuntime.free(filt); - return null; - } - - for (j = 0; j < y; ++j) - { - var filter_type = 0; - if (force_filter > -1) - { - filter_type = force_filter; - stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, force_filter, line_buffer); - } - else - { - var best_filter = 0; - var best_filter_val = 0x7fffffff; - var est = 0; - var i = 0; - for (filter_type = 0; filter_type < 5; filter_type++) - { - stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, filter_type, line_buffer); - est = 0; - for (i = 0; i < x * n; ++i) est += CRuntime.abs(line_buffer[i]); - - if (est < best_filter_val) - { - best_filter_val = est; - best_filter = filter_type; - } - } - - if (filter_type != best_filter) - { - stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, best_filter, line_buffer); - filter_type = best_filter; - } - } - - filt[j * (x * n + 1)] = (byte)filter_type; - CRuntime.memmove(filt + j * (x * n + 1) + 1, line_buffer, (ulong)(x * n)); + var pad = (-x * 3) & 3; + return stbiw__outfile(s, -1, -1, x, y, comp, 1, data, 0, pad, "11 4 22 44 44 22 444444", 66, 77, + 14 + 40 + (x * 3 + pad) * y, 0, 0, 14 + 40, 40, x, y, 1, 24, 0, 0, 0, 0, 0, 0); } - CRuntime.free(line_buffer); - zlib = stbi_zlib_compress(filt, y * (x * n + 1), &zlen, stbi_write_png_compression_level); - CRuntime.free(filt); - if (zlib == null) - return null; - _out_ = (byte*)CRuntime.malloc((ulong)(8 + 12 + 13 + 12 + zlen + 12)); - if (_out_ == null) - return null; - *out_len = 8 + 12 + 13 + 12 + zlen + 12; - o = _out_; - CRuntime.memmove(o, sig, (ulong)8); - o += 8; - o[0] = (13 >> 24) & 0xff; - o[1] = (13 >> 16) & 0xff; - o[2] = (13 >> 8) & 0xff; - o[3] = 13 & 0xff; - o += 4; - o[0] = (byte)("IHDR"[0] & 0xff); - o[1] = (byte)("IHDR"[1] & 0xff); - o[2] = (byte)("IHDR"[2] & 0xff); - o[3] = (byte)("IHDR"[3] & 0xff); - o += 4; - o[0] = (byte)((x >> 24) & 0xff); - o[1] = (byte)((x >> 16) & 0xff); - o[2] = (byte)((x >> 8) & 0xff); - o[3] = (byte)(x & 0xff); - o += 4; - o[0] = (byte)((y >> 24) & 0xff); - o[1] = (byte)((y >> 16) & 0xff); - o[2] = (byte)((y >> 8) & 0xff); - o[3] = (byte)(y & 0xff); - o += 4; - *o++ = 8; - *o++ = (byte)(ctype[n] & 0xff); - *o++ = 0; - *o++ = 0; - *o++ = 0; - stbiw__wpcrc(&o, 13); - o[0] = (byte)((zlen >> 24) & 0xff); - o[1] = (byte)((zlen >> 16) & 0xff); - o[2] = (byte)((zlen >> 8) & 0xff); - o[3] = (byte)(zlen & 0xff); - o += 4; - o[0] = (byte)("IDAT"[0] & 0xff); - o[1] = (byte)("IDAT"[1] & 0xff); - o[2] = (byte)("IDAT"[2] & 0xff); - o[3] = (byte)("IDAT"[3] & 0xff); - o += 4; - CRuntime.memmove(o, zlib, (ulong)zlen); - o += zlen; - CRuntime.free(zlib); - stbiw__wpcrc(&o, zlen); - o[0] = (0 >> 24) & 0xff; - o[1] = (0 >> 16) & 0xff; - o[2] = (0 >> 8) & 0xff; - o[3] = 0 & 0xff; - o += 4; - o[0] = (byte)("IEND"[0] & 0xff); - o[1] = (byte)("IEND"[1] & 0xff); - o[2] = (byte)("IEND"[2] & 0xff); - o[3] = (byte)("IEND"[3] & 0xff); - o += 4; - stbiw__wpcrc(&o, 0); - return _out_; + return stbiw__outfile(s, -1, -1, x, y, comp, 1, data, 1, 0, + "11 4 22 44 44 22 444444 4444 4 444 444 444 444", 66, 77, 14 + 108 + x * y * 4, 0, 0, 14 + 108, 108, x, + y, 1, 32, 3, 0, 0, 0, 0, 0, 0xff0000, 0xff00, 0xff, 0xff000000u, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); } public static int stbi_write_tga_core(stbi__write_context s, int x, int y, int comp, void* data) @@ -653,7 +396,6 @@ public static int stbi_write_tga_core(stbi__write_context s, int x, int y, int c if (stbi_write_tga_with_rle == 0) return stbiw__outfile(s, -1, -1, x, y, comp, 0, data, has_alpha, 0, "111 221 2222 11", 0, 0, format, 0, 0, 0, 0, 0, x, y, (colorbytes + has_alpha) * 8, has_alpha * 8); - var i = 0; var j = 0; var k = 0; @@ -716,7 +458,8 @@ public static int stbi_write_tga_core(stbi__write_context s, int x, int y, int c { var header = (byte)((len - 1) & 0xff); stbiw__write1(s, header); - for (k = 0; k < len; ++k) stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin + k * comp); + for (k = 0; k < len; ++k) + stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin + k * comp); } else { @@ -728,15 +471,204 @@ public static int stbi_write_tga_core(stbi__write_context s, int x, int y, int c } stbiw__write_flush(s); - return 1; } - public static int stbi_write_tga_to_func(delegate0 func, void* context, int x, int y, int comp, void* data) + public static void stbiw__linear_to_rgbe(byte* rgbe, float* linear) { - var s = new stbi__write_context(); - stbi__start_write_callbacks(s, func, context); - return stbi_write_tga_core(s, x, y, comp, data); + var exponent = 0; + var maxcomp = linear[0] > (linear[1] > linear[2] ? linear[1] : linear[2]) ? linear[0] : + linear[1] > linear[2] ? linear[1] : linear[2]; + if (maxcomp < 1e-32f) + { + rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0; + } + else + { + var normalize = (float)CRuntime.frexp(maxcomp, &exponent) * 256.0f / maxcomp; + rgbe[0] = (byte)(linear[0] * normalize); + rgbe[1] = (byte)(linear[1] * normalize); + rgbe[2] = (byte)(linear[2] * normalize); + rgbe[3] = (byte)(exponent + 128); + } + } + + public static void stbiw__write_run_data(stbi__write_context s, int length, byte databyte) + { + var lengthbyte = (byte)((length + 128) & 0xff); + s.func(s.context, &lengthbyte, 1); + s.func(s.context, &databyte, 1); + } + + public static void stbiw__write_dump_data(stbi__write_context s, int length, byte* data) + { + var lengthbyte = (byte)(length & 0xff); + s.func(s.context, &lengthbyte, 1); + s.func(s.context, data, length); + } + + public static void stbiw__write_hdr_scanline(stbi__write_context s, int width, int ncomp, byte* scratch, + float* scanline) + { + var scanlineheader = stackalloc byte[] { 2, 2, 0, 0 }; + var rgbe = stackalloc byte[4]; + var linear = stackalloc float[3]; + var x = 0; + scanlineheader[2] = (byte)((width & 0xff00) >> 8); + scanlineheader[3] = (byte)(width & 0x00ff); + if (width < 8 || width >= 32768) + { + for (x = 0; x < width; x++) + { + switch (ncomp) + { + case 4: + case 3: + linear[2] = scanline[x * ncomp + 2]; + linear[1] = scanline[x * ncomp + 1]; + linear[0] = scanline[x * ncomp + 0]; + break; + default: + linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; + break; + } + + stbiw__linear_to_rgbe(rgbe, linear); + s.func(s.context, rgbe, 4); + } + } + else + { + var c = 0; + var r = 0; + for (x = 0; x < width; x++) + { + switch (ncomp) + { + case 4: + case 3: + linear[2] = scanline[x * ncomp + 2]; + linear[1] = scanline[x * ncomp + 1]; + linear[0] = scanline[x * ncomp + 0]; + break; + default: + linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; + break; + } + + stbiw__linear_to_rgbe(rgbe, linear); + scratch[x + width * 0] = rgbe[0]; + scratch[x + width * 1] = rgbe[1]; + scratch[x + width * 2] = rgbe[2]; + scratch[x + width * 3] = rgbe[3]; + } + + s.func(s.context, scanlineheader, 4); + for (c = 0; c < 4; c++) + { + var comp = &scratch[width * c]; + x = 0; + while (x < width) + { + r = x; + while (r + 2 < width) + { + if (comp[r] == comp[r + 1] && comp[r] == comp[r + 2]) + break; + ++r; + } + + if (r + 2 >= width) + r = width; + while (x < r) + { + var len = r - x; + if (len > 128) + len = 128; + stbiw__write_dump_data(s, len, &comp[x]); + x += len; + } + + if (r + 2 < width) + { + while (r < width && comp[r] == comp[x]) + ++r; + while (x < r) + { + var len = r - x; + if (len > 127) + len = 127; + stbiw__write_run_data(s, len, comp[x]); + x += len; + } + } + } + } + } + } + + public static void* stbiw__sbgrowf(void** arr, int increment, int itemsize) + { + var m = *arr != null ? 2 * ((int*)*arr - 2)[0] + increment : increment + 1; + var p = CRuntime.realloc(*arr != null ? (int*)*arr - 2 : null, (ulong)(itemsize * m + sizeof(int) * 2)); + if (p != null) + { + if (*arr == null) + ((int*)p)[1] = 0; + *arr = (int*)p + 2; + ((int*)*arr - 2)[0] = m; + } + + return *arr; + } + + public static byte* stbiw__zlib_flushf(byte* data, uint* bitbuffer, int* bitcount) + { + while (*bitcount >= 8) + { + if (data == null || ((int*)data - 2)[1] + 1 >= ((int*)data - 2)[0]) + stbiw__sbgrowf((void**)&data, 1, sizeof(byte)); + var index = ((int*)data - 2)[1]++; + var value = (byte)(*bitbuffer & 0xff); + data[index] = value; + *bitbuffer >>= 8; + *bitcount -= 8; + } + + return data; + } + + public static int stbiw__zlib_bitrev(int code, int codebits) + { + var res = 0; + while (codebits-- != 0) + { + res = (res << 1) | (code & 1); + code >>= 1; + } + + return res; + } + + public static uint stbiw__zlib_countm(byte* a, byte* b, int limit) + { + var i = 0; + for (i = 0; i < limit && i < 258; ++i) + if (a[i] != b[i]) + break; + return (uint)i; + } + + public static uint stbiw__zhash(byte* data) + { + var hash = (uint)(data[0] + (data[1] << 8) + (data[2] << 16)); + hash ^= hash << 3; + hash += hash >> 5; + hash ^= hash << 4; + hash += hash >> 17; + hash ^= hash << 25; + hash += hash >> 6; + return hash; } public static byte* stbi_zlib_compress(byte* data, int data_len, int* out_len, int quality) @@ -753,11 +685,9 @@ public static int stbi_write_tga_to_func(delegate0 func, void* context, int x, i quality = 5; if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = 0x78; if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = 0x5e; { bitbuf |= (uint)(1 << bitcount); @@ -771,8 +701,8 @@ public static int stbi_write_tga_to_func(delegate0 func, void* context, int x, i _out_ = stbiw__zlib_flushf(_out_, &bitbuf, &bitcount); } - for (i = 0; i < 16384; ++i) hash_table[i] = null; - + for (i = 0; i < 16384; ++i) + hash_table[i] = null; i = 0; while (i < data_len - 3) { @@ -800,7 +730,6 @@ public static int stbi_write_tga_to_func(delegate0 func, void* context, int x, i if (hash_table[h] == null || ((int*)hash_table[h] - 2)[1] + 1 >= ((int*)hash_table[h] - 2)[0]) stbiw__sbgrowf((void**)&hash_table[h], 1, sizeof(byte*)); - hash_table[h][((int*)hash_table[h] - 2)[1]++] = data + i; if (bestloc != null) { @@ -947,7 +876,6 @@ public static int stbi_write_tga_to_func(delegate0 func, void* context, int x, i for (i = 0; i < 16384; ++i) if (hash_table[i] != null) CRuntime.free((int*)hash_table[i] - 2); - CRuntime.free(hash_table); if (((int*)_out_ - 2)[1] > data_len + 2 + (data_len + 32766) / 32767 * 5) { @@ -959,23 +887,18 @@ public static int stbi_write_tga_to_func(delegate0 func, void* context, int x, i blocklen = 32767; if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = (byte)(data_len - j == blocklen ? 1 : 0); if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = (byte)(blocklen & 0xff); if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = (byte)((blocklen >> 8) & 0xff); if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = (byte)(~blocklen & 0xff); if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = (byte)((~blocklen >> 8) & 0xff); CRuntime.memcpy(_out_ + ((int*)_out_ - 2)[1], data + j, (ulong)blocklen); ((int*)_out_ - 2)[1] += blocklen; @@ -1004,19 +927,15 @@ public static int stbi_write_tga_to_func(delegate0 func, void* context, int x, i if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = (byte)((s2 >> 8) & 0xff); if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = (byte)(s2 & 0xff); if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = (byte)((s1 >> 8) & 0xff); if (_out_ == null || ((int*)_out_ - 2)[1] + 1 >= ((int*)_out_ - 2)[0]) stbiw__sbgrowf((void**)&_out_, 1, sizeof(byte)); - _out_[((int*)_out_ - 2)[1]++] = (byte)(s1 & 0xff); } @@ -1029,11 +948,34 @@ public static uint stbiw__crc32(byte* buffer, int len) { var crc = ~0u; var i = 0; - for (i = 0; i < len; ++i) crc = (crc >> 8) ^ stbiw__crc32_crc_table[buffer[i] ^ (crc & 0xff)]; - + for (i = 0; i < len; ++i) + crc = (crc >> 8) ^ stbiw__crc32_crc_table[buffer[i] ^ (crc & 0xff)]; return ~crc; } + public static void stbiw__wpcrc(byte** data, int len) + { + var crc = stbiw__crc32(*data - len - 4, len + 4); + (*data)[0] = (byte)((crc >> 24) & 0xff); + (*data)[1] = (byte)((crc >> 16) & 0xff); + (*data)[2] = (byte)((crc >> 8) & 0xff); + (*data)[3] = (byte)(crc & 0xff); + (*data) += 4; + } + + public static byte stbiw__paeth(int a, int b, int c) + { + var p = a + b - c; + var pa = CRuntime.abs(p - a); + var pb = CRuntime.abs(p - b); + var pc = CRuntime.abs(p - c); + if (pa <= pb && pa <= pc) + return (byte)(a & 0xff); + if (pb <= pc) + return (byte)(b & 0xff); + return (byte)(c & 0xff); + } + public static void stbiw__encode_png_line(byte* pixels, int stride_bytes, int width, int height, int y, int n, int filter_type, sbyte* line_buffer) { @@ -1074,51 +1016,190 @@ public static void stbiw__encode_png_line(byte* pixels, int stride_bytes, int wi switch (type) { case 1: - for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - z[i - n]); - + for (i = n; i < width * n; ++i) + line_buffer[i] = (sbyte)(z[i] - z[i - n]); break; case 2: - for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - z[i - signed_stride]); - + for (i = n; i < width * n; ++i) + line_buffer[i] = (sbyte)(z[i] - z[i - signed_stride]); break; case 3: for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - ((z[i - n] + z[i - signed_stride]) >> 1)); - break; case 4: for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - stbiw__paeth(z[i - n], z[i - signed_stride], z[i - signed_stride - n])); - break; case 5: - for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - (z[i - n] >> 1)); - + for (i = n; i < width * n; ++i) + line_buffer[i] = (sbyte)(z[i] - (z[i - n] >> 1)); break; case 6: - for (i = n; i < width * n; ++i) line_buffer[i] = (sbyte)(z[i] - stbiw__paeth(z[i - n], 0, 0)); - + for (i = n; i < width * n; ++i) + line_buffer[i] = (sbyte)(z[i] - stbiw__paeth(z[i - n], 0, 0)); break; } } - public static void stbiw__jpg_calcBits(int val, ushort* bits) - { - var tmp1 = val < 0 ? -val : val; - val = val < 0 ? val - 1 : val; - bits[1] = 1; - while ((tmp1 >>= 1) != 0) ++bits[1]; - - bits[0] = (ushort)(val & ((1 << bits[1]) - 1)); - } - - public static void stbiw__jpg_DCT(float* d0p, float* d1p, float* d2p, float* d3p, float* d4p, float* d5p, - float* d6p, float* d7p) + public static byte* stbi_write_png_to_mem(byte* pixels, int stride_bytes, int x, int y, int n, int* out_len) { - var d0 = *d0p; - var d1 = *d1p; - var d2 = *d2p; + var force_filter = stbi_write_force_png_filter; + var ctype = stackalloc int[] { -1, 0, 4, 2, 6 }; + var sig = stackalloc byte[] { 137, 80, 78, 71, 13, 10, 26, 10 }; + byte* _out_; + byte* o; + byte* filt; + byte* zlib; + sbyte* line_buffer; + var j = 0; + var zlen = 0; + if (stride_bytes == 0) + stride_bytes = x * n; + if (force_filter >= 5) + force_filter = -1; + filt = (byte*)CRuntime.malloc((ulong)((x * n + 1) * y)); + if (filt == null) + return null; + line_buffer = (sbyte*)CRuntime.malloc((ulong)(x * n)); + if (line_buffer == null) + { + CRuntime.free(filt); + return null; + } + + for (j = 0; j < y; ++j) + { + var filter_type = 0; + if (force_filter > -1) + { + filter_type = force_filter; + stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, force_filter, line_buffer); + } + else + { + var best_filter = 0; + var best_filter_val = 0x7fffffff; + var est = 0; + var i = 0; + for (filter_type = 0; filter_type < 5; filter_type++) + { + stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, filter_type, line_buffer); + est = 0; + for (i = 0; i < x * n; ++i) + est += CRuntime.abs(line_buffer[i]); + if (est < best_filter_val) + { + best_filter_val = est; + best_filter = filter_type; + } + } + + if (filter_type != best_filter) + { + stbiw__encode_png_line(pixels, stride_bytes, x, y, j, n, best_filter, line_buffer); + filter_type = best_filter; + } + } + + filt[j * (x * n + 1)] = (byte)filter_type; + CRuntime.memmove(filt + j * (x * n + 1) + 1, line_buffer, (ulong)(x * n)); + } + + CRuntime.free(line_buffer); + zlib = stbi_zlib_compress(filt, y * (x * n + 1), &zlen, stbi_write_png_compression_level); + CRuntime.free(filt); + if (zlib == null) + return null; + _out_ = (byte*)CRuntime.malloc((ulong)(8 + 12 + 13 + 12 + zlen + 12)); + if (_out_ == null) + return null; + *out_len = 8 + 12 + 13 + 12 + zlen + 12; + o = _out_; + CRuntime.memmove(o, sig, (ulong)8); + o += 8; + o[0] = (13 >> 24) & 0xff; + o[1] = (13 >> 16) & 0xff; + o[2] = (13 >> 8) & 0xff; + o[3] = 13 & 0xff; + o += 4; + o[0] = (byte)("IHDR"[0] & 0xff); + o[1] = (byte)("IHDR"[1] & 0xff); + o[2] = (byte)("IHDR"[2] & 0xff); + o[3] = (byte)("IHDR"[3] & 0xff); + o += 4; + o[0] = (byte)((x >> 24) & 0xff); + o[1] = (byte)((x >> 16) & 0xff); + o[2] = (byte)((x >> 8) & 0xff); + o[3] = (byte)(x & 0xff); + o += 4; + o[0] = (byte)((y >> 24) & 0xff); + o[1] = (byte)((y >> 16) & 0xff); + o[2] = (byte)((y >> 8) & 0xff); + o[3] = (byte)(y & 0xff); + o += 4; + *o++ = 8; + *o++ = (byte)(ctype[n] & 0xff); + *o++ = 0; + *o++ = 0; + *o++ = 0; + stbiw__wpcrc(&o, 13); + o[0] = (byte)((zlen >> 24) & 0xff); + o[1] = (byte)((zlen >> 16) & 0xff); + o[2] = (byte)((zlen >> 8) & 0xff); + o[3] = (byte)(zlen & 0xff); + o += 4; + o[0] = (byte)("IDAT"[0] & 0xff); + o[1] = (byte)("IDAT"[1] & 0xff); + o[2] = (byte)("IDAT"[2] & 0xff); + o[3] = (byte)("IDAT"[3] & 0xff); + o += 4; + CRuntime.memmove(o, zlib, (ulong)zlen); + o += zlen; + CRuntime.free(zlib); + stbiw__wpcrc(&o, zlen); + o[0] = (0 >> 24) & 0xff; + o[1] = (0 >> 16) & 0xff; + o[2] = (0 >> 8) & 0xff; + o[3] = 0 & 0xff; + o += 4; + o[0] = (byte)("IEND"[0] & 0xff); + o[1] = (byte)("IEND"[1] & 0xff); + o[2] = (byte)("IEND"[2] & 0xff); + o[3] = (byte)("IEND"[3] & 0xff); + o += 4; + stbiw__wpcrc(&o, 0); + return _out_; + } + + public static void stbiw__jpg_writeBits(stbi__write_context s, int* bitBufP, int* bitCntP, ushort bs0, + ushort bs1) + { + var bitBuf = *bitBufP; + var bitCnt = *bitCntP; + bitCnt += bs1; + bitBuf |= bs0 << (24 - bitCnt); + while (bitCnt >= 8) + { + var c = (byte)((bitBuf >> 16) & 255); + stbiw__putc(s, c); + if (c == 255) + stbiw__putc(s, 0); + bitBuf <<= 8; + bitCnt -= 8; + } + + *bitBufP = bitBuf; + *bitCntP = bitCnt; + } + + public static void stbiw__jpg_DCT(float* d0p, float* d1p, float* d2p, float* d3p, float* d4p, float* d5p, + float* d6p, float* d7p) + { + var d0 = *d0p; + var d1 = *d1p; + var d2 = *d2p; var d3 = *d3p; var d4 = *d4p; var d5 = *d5p; @@ -1167,6 +1248,16 @@ public static void stbiw__jpg_DCT(float* d0p, float* d1p, float* d2p, float* d3p *d6p = d6; } + public static void stbiw__jpg_calcBits(int val, ushort* bits) + { + var tmp1 = val < 0 ? -val : val; + val = val < 0 ? val - 1 : val; + bits[1] = 1; + while ((tmp1 >>= 1) != 0) + ++bits[1]; + bits[0] = (ushort)(val & ((1 << bits[1]) - 1)); + } + public static int stbiw__jpg_processDU(stbi__write_context s, int* bitBuf, int* bitCnt, float* CDU, int du_stride, float* fdtbl, int DC, ushort[,] HTDC, ushort[,] HTAC) { @@ -1184,12 +1275,10 @@ public static int stbiw__jpg_processDU(stbi__write_context s, int* bitBuf, int* for (dataOff = 0, n = du_stride * 8; dataOff < n; dataOff += du_stride) stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + 1], &CDU[dataOff + 2], &CDU[dataOff + 3], &CDU[dataOff + 4], &CDU[dataOff + 5], &CDU[dataOff + 6], &CDU[dataOff + 7]); - for (dataOff = 0; dataOff < 8; ++dataOff) stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + du_stride], &CDU[dataOff + du_stride * 2], &CDU[dataOff + du_stride * 3], &CDU[dataOff + du_stride * 4], &CDU[dataOff + du_stride * 5], &CDU[dataOff + du_stride * 6], &CDU[dataOff + du_stride * 7]); - for (y = 0, j = 0; y < 8; ++y) for (x = 0; x < 8; ++x, ++j) { @@ -1208,8 +1297,7 @@ public static int stbiw__jpg_processDU(stbi__write_context s, int* bitBuf, int* { var bits = stackalloc ushort[2]; stbiw__jpg_calcBits(diff, bits); - stbiw__jpg_writeBits(s, bitBuf, bitCnt, - HTDC[bits[1], 0], HTDC[bits[1], 1]); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTDC[bits[1], 0], HTDC[bits[1], 1]); stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]); } @@ -1240,370 +1328,252 @@ public static int stbiw__jpg_processDU(stbi__write_context s, int* bitBuf, int* var nrmarker = 0; for (nrmarker = 1; nrmarker <= lng; ++nrmarker) stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes[0], M16zeroes[1]); - nrzeroes &= 15; } stbiw__jpg_calcBits(DU[i], bits); - stbiw__jpg_writeBits(s, bitBuf, bitCnt, - HTAC[(nrzeroes << 4) + bits[1], 0], + stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1], 0], HTAC[(nrzeroes << 4) + bits[1], 1]); stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits[0], bits[1]); } - if (end0pos != 63) stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB[0], EOB[1]); - + if (end0pos != 63) + stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB[0], EOB[1]); return DU[0]; } - public static void stbiw__jpg_writeBits(stbi__write_context s, int* bitBufP, int* bitCntP, ushort bs0, - ushort bs1) + public static int stbi_write_jpg_core(stbi__write_context s, int width, int height, int comp, void* data, + int quality) { - var bitBuf = *bitBufP; - var bitCnt = *bitCntP; - bitCnt += bs1; - bitBuf |= bs0 << (24 - bitCnt); - while (bitCnt >= 8) + var row = 0; + var col = 0; + var i = 0; + var k = 0; + var subsample = 0; + var fdtbl_Y = stackalloc float[64]; + var fdtbl_UV = stackalloc float[64]; + var YTable = stackalloc byte[64]; + var UVTable = stackalloc byte[64]; + if (data == null || width == 0 || height == 0 || comp > 4 || comp < 1) + return 0; + quality = quality != 0 ? quality : 90; + subsample = quality <= 90 ? 1 : 0; + quality = quality < 1 ? 1 : quality > 100 ? 100 : quality; + quality = quality < 50 ? 5000 / quality : 200 - quality * 2; + for (i = 0; i < 64; ++i) { - var c = (byte)((bitBuf >> 16) & 255); - stbiw__putc(s, c); - if (c == 255) stbiw__putc(s, 0); - - bitBuf <<= 8; - bitCnt -= 8; + var uvti = 0; + var yti = (stbi_write_jpg_core_YQT[i] * quality + 50) / 100; + YTable[stbiw__jpg_ZigZag[i]] = (byte)(yti < 1 ? 1 : yti > 255 ? 255 : yti); + uvti = (stbi_write_jpg_core_UVQT[i] * quality + 50) / 100; + UVTable[stbiw__jpg_ZigZag[i]] = (byte)(uvti < 1 ? 1 : uvti > 255 ? 255 : uvti); } - *bitBufP = bitBuf; - *bitCntP = bitCnt; - } + for (row = 0, k = 0; row < 8; ++row) + for (col = 0; col < 8; ++col, ++k) + { + fdtbl_Y[k] = 1 / (YTable[stbiw__jpg_ZigZag[k]] * stbi_write_jpg_core_aasf[row] * + stbi_write_jpg_core_aasf[col]); + fdtbl_UV[k] = 1 / (UVTable[stbiw__jpg_ZigZag[k]] * stbi_write_jpg_core_aasf[row] * + stbi_write_jpg_core_aasf[col]); + } - public static void stbiw__linear_to_rgbe(byte* rgbe, float* linear) - { - var exponent = 0; - var maxcomp = linear[0] > (linear[1] > linear[2] ? linear[1] : linear[2]) ? linear[0] : - linear[1] > linear[2] ? linear[1] : linear[2]; - if (maxcomp < 1e-32f) - { - rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0; - } - else { - var normalize = (float)CRuntime.frexp(maxcomp, &exponent) * 256.0f / maxcomp; - rgbe[0] = (byte)(linear[0] * normalize); - rgbe[1] = (byte)(linear[1] * normalize); - rgbe[2] = (byte)(linear[2] * normalize); - rgbe[3] = (byte)(exponent + 128); - } - } + var head1 = stackalloc byte[] + { + 0xFF, + 0xC0, + 0, + 0x11, + 8, + (byte)(height >> 8), + (byte)(height & 0xff), + (byte)(width >> 8), + (byte)(width & 0xff), + 3, + 1, + (byte)(subsample != 0 ? 0x22 : 0x11), + 0, + 2, + 0x11, + 1, + 3, + 0x11, + 1, + 0xFF, + 0xC4, + 0x01, + 0xA2, + 0 + }; + fixed (byte* ptr = stbi_write_jpg_core_head0) + { + s.func(s.context, ptr, 25 * sizeof(byte)); + } - public static byte stbiw__paeth(int a, int b, int c) - { - var p = a + b - c; - var pa = CRuntime.abs(p - a); - var pb = CRuntime.abs(p - b); - var pc = CRuntime.abs(p - c); - if (pa <= pb && pa <= pc) - return (byte)(a & 0xff); - if (pb <= pc) - return (byte)(b & 0xff); - return (byte)(c & 0xff); - } - - public static void stbiw__putc(stbi__write_context s, byte c) - { - s.func(s.context, &c, 1); - } - - public static void* stbiw__sbgrowf(void** arr, int increment, int itemsize) - { - var m = *arr != null ? 2 * ((int*)*arr - 2)[0] + increment : increment + 1; - var p = CRuntime.realloc(*arr != null ? (int*)*arr - 2 : null, (ulong)(itemsize * m + sizeof(int) * 2)); - if (p != null) - { - if (*arr == null) - ((int*)p)[1] = 0; - *arr = (int*)p + 2; - ((int*)*arr - 2)[0] = m; - } - - return *arr; - } - - public static void stbiw__wpcrc(byte** data, int len) - { - var crc = stbiw__crc32(*data - len - 4, len + 4); - (*data)[0] = (byte)((crc >> 24) & 0xff); - (*data)[1] = (byte)((crc >> 16) & 0xff); - (*data)[2] = (byte)((crc >> 8) & 0xff); - (*data)[3] = (byte)(crc & 0xff); - (*data) += 4; - } - - public static void stbiw__write_dump_data(stbi__write_context s, int length, byte* data) - { - var lengthbyte = (byte)(length & 0xff); - s.func(s.context, &lengthbyte, 1); - s.func(s.context, data, length); - } - - public static void stbiw__write_flush(stbi__write_context s) - { - if (s.buf_used != 0) - { - fixed (byte* bptr = s.buffer) + s.func(s.context, YTable, 64 * sizeof(byte)); + stbiw__putc(s, 1); + s.func(s.context, UVTable, 64 * sizeof(byte)); + s.func(s.context, head1, 24 * sizeof(byte)); + fixed (byte* ptr = &stbi_write_jpg_core_std_dc_luminance_nrcodes[1]) { - s.func(s.context, bptr, s.buf_used); + s.func(s.context, ptr, 17 * sizeof(byte) - 1); } - s.buf_used = 0; - } - } - public static void stbiw__write_hdr_scanline(stbi__write_context s, int width, int ncomp, byte* scratch, - float* scanline) - { - var scanlineheader = stackalloc byte[] { 2, 2, 0, 0 }; - var rgbe = stackalloc byte[4]; - var linear = stackalloc float[3]; - var x = 0; - scanlineheader[2] = (byte)((width & 0xff00) >> 8); - scanlineheader[3] = (byte)(width & 0x00ff); - if (width < 8 || width >= 32768) - { - for (x = 0; x < width; x++) + fixed (byte* ptr = stbi_write_jpg_core_std_dc_luminance_values) { - switch (ncomp) - { - case 4: - case 3: - linear[2] = scanline[x * ncomp + 2]; - linear[1] = scanline[x * ncomp + 1]; - linear[0] = scanline[x * ncomp + 0]; - break; - default: - linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; - break; - } - - stbiw__linear_to_rgbe(rgbe, linear); - s.func(s.context, rgbe, 4); + s.func(s.context, ptr, 12 * sizeof(byte)); } - } - else - { - var c = 0; - var r = 0; - for (x = 0; x < width; x++) - { - switch (ncomp) - { - case 4: - case 3: - linear[2] = scanline[x * ncomp + 2]; - linear[1] = scanline[x * ncomp + 1]; - linear[0] = scanline[x * ncomp + 0]; - break; - default: - linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; - break; - } - stbiw__linear_to_rgbe(rgbe, linear); - scratch[x + width * 0] = rgbe[0]; - scratch[x + width * 1] = rgbe[1]; - scratch[x + width * 2] = rgbe[2]; - scratch[x + width * 3] = rgbe[3]; + stbiw__putc(s, 0x10); + fixed (byte* ptr = &stbi_write_jpg_core_std_ac_luminance_nrcodes[1]) + { + s.func(s.context, ptr, 17 * sizeof(byte) - 1); } - s.func(s.context, scanlineheader, 4); - for (c = 0; c < 4; c++) + fixed (byte* ptr = stbi_write_jpg_core_std_ac_luminance_values) { - var comp = &scratch[width * c]; - x = 0; - while (x < width) - { - r = x; - while (r + 2 < width) - { - if (comp[r] == comp[r + 1] && comp[r] == comp[r + 2]) - break; - ++r; - } - - if (r + 2 >= width) - r = width; - while (x < r) - { - var len = r - x; - if (len > 128) - len = 128; - stbiw__write_dump_data(s, len, &comp[x]); - x += len; - } - - if (r + 2 < width) - { - while (r < width && comp[r] == comp[x]) ++r; - - while (x < r) - { - var len = r - x; - if (len > 127) - len = 127; - stbiw__write_run_data(s, len, comp[x]); - x += len; - } - } - } + s.func(s.context, ptr, 162 * sizeof(byte)); } - } - } - - public static void stbiw__write_pixel(stbi__write_context s, int rgb_dir, int comp, int write_alpha, - int expand_mono, byte* d) - { - var bg = stackalloc byte[] { 255, 0, 255 }; - var px = stackalloc byte[3]; - var k = 0; - if (write_alpha < 0) - stbiw__write1(s, d[comp - 1]); - switch (comp) - { - case 2: - case 1: - if (expand_mono != 0) - stbiw__write3(s, d[0], d[0], d[0]); - else - stbiw__write1(s, d[0]); - break; - case 4: - case 3: - if (comp == 4 && write_alpha == 0) - { - for (k = 0; k < 3; ++k) px[k] = (byte)(bg[k] + (d[k] - bg[k]) * d[3] / 255); - - stbiw__write3(s, px[1 - rgb_dir], px[1], px[1 + rgb_dir]); - break; - } - stbiw__write3(s, d[1 - rgb_dir], d[1], d[1 + rgb_dir]); - break; - } + stbiw__putc(s, 1); + fixed (byte* ptr = &stbi_write_jpg_core_std_dc_chrominance_nrcodes[1]) + { + s.func(s.context, ptr, 17 * sizeof(byte) - 1); + } - if (write_alpha > 0) - stbiw__write1(s, d[comp - 1]); - } + fixed (byte* ptr = stbi_write_jpg_core_std_dc_chrominance_values) + { + s.func(s.context, ptr, 12 * sizeof(byte)); + } - public static void stbiw__write_pixels(stbi__write_context s, int rgb_dir, int vdir, int x, int y, int comp, - void* data, int write_alpha, int scanline_pad, int expand_mono) - { - uint zero = 0; - var i = 0; - var j = 0; - var j_end = 0; - if (y <= 0) - return; - if (stbi__flip_vertically_on_write != 0) - vdir *= -1; - if (vdir < 0) - { - j_end = -1; - j = y - 1; - } - else - { - j_end = y; - j = 0; - } + stbiw__putc(s, 0x11); + fixed (byte* ptr = &stbi_write_jpg_core_std_ac_chrominance_nrcodes[1]) + { + s.func(s.context, ptr, 17 * sizeof(byte) - 1); + } - for (; j != j_end; j += vdir) - { - for (i = 0; i < x; ++i) + fixed (byte* ptr = stbi_write_jpg_core_std_ac_chrominance_values) { - var d = (byte*)data + (j * x + i) * comp; - stbiw__write_pixel(s, rgb_dir, comp, write_alpha, expand_mono, d); + s.func(s.context, ptr, 162 * sizeof(byte)); } - stbiw__write_flush(s); - s.func(s.context, &zero, scanline_pad); + fixed (byte* ptr = stbi_write_jpg_core_head2) + { + s.func(s.context, ptr, 14 * sizeof(byte)); + } } - } - - public static void stbiw__write_run_data(stbi__write_context s, int length, byte databyte) - { - var lengthbyte = (byte)((length + 128) & 0xff); - s.func(s.context, &lengthbyte, 1); - s.func(s.context, &databyte, 1); - } - - public static void stbiw__write1(stbi__write_context s, byte a) - { - if ((ulong)s.buf_used + 1 > 64 * sizeof(byte)) - stbiw__write_flush(s); - s.buffer[s.buf_used++] = a; - } - - public static void stbiw__write3(stbi__write_context s, byte a, byte b, byte c) - { - var n = 0; - if ((ulong)s.buf_used + 3 > 64 * sizeof(byte)) - stbiw__write_flush(s); - n = s.buf_used; - s.buf_used = n + 3; - s.buffer[n + 0] = a; - s.buffer[n + 1] = b; - s.buffer[n + 2] = c; - } - - public static uint stbiw__zhash(byte* data) - { - var hash = (uint)(data[0] + (data[1] << 8) + (data[2] << 16)); - hash ^= hash << 3; - hash += hash >> 5; - hash ^= hash << 4; - hash += hash >> 17; - hash ^= hash << 25; - hash += hash >> 6; - return hash; - } - public static int stbiw__zlib_bitrev(int code, int codebits) - { - var res = 0; - while (codebits-- != 0) { - res = (res << 1) | (code & 1); - code >>= 1; - } - - return res; - } - - public static uint stbiw__zlib_countm(byte* a, byte* b, int limit) - { - var i = 0; - for (i = 0; i < limit && i < 258; ++i) - if (a[i] != b[i]) - break; + var DCY = 0; + var DCU = 0; + var DCV = 0; + var bitBuf = 0; + var bitCnt = 0; + var ofsG = comp > 2 ? 1 : 0; + var ofsB = comp > 2 ? 2 : 0; + var dataR = (byte*)data; + var dataG = dataR + ofsG; + var dataB = dataR + ofsB; + var x = 0; + var y = 0; + var pos = 0; + if (subsample != 0) + { + var Y = stackalloc float[256]; + var U = stackalloc float[256]; + var V = stackalloc float[256]; + var subU = stackalloc float[64]; + var subV = stackalloc float[64]; + for (y = 0; y < height; y += 16) + for (x = 0; x < width; x += 16) + { + for (row = y, pos = 0; row < y + 16; ++row) + { + var clamped_row = row < height ? row : height - 1; + var base_p = + (stbi__flip_vertically_on_write != 0 ? height - 1 - clamped_row : clamped_row) * width * + comp; + for (col = x; col < x + 16; ++col, ++pos) + { + var p = base_p + (col < width ? col : width - 1) * comp; + float r = dataR[p]; + float g = dataG[p]; + float b = dataB[p]; + Y[pos] = +0.29900f * r + 0.58700f * g + 0.11400f * b - 128; + U[pos] = -0.16874f * r - 0.33126f * g + 0.50000f * b; + V[pos] = +0.50000f * r - 0.41869f * g - 0.08131f * b; + } + } - return (uint)i; - } + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 0, 16, fdtbl_Y, DCY, + stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 8, 16, fdtbl_Y, DCY, + stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 128, 16, fdtbl_Y, DCY, + stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 136, 16, fdtbl_Y, DCY, + stbi_write_jpg_core_YDC_HT, stbi_write_jpg_core_YAC_HT); + { + var yy = 0; + var xx = 0; + for (yy = 0, pos = 0; yy < 8; ++yy) + for (xx = 0; xx < 8; ++xx, ++pos) + { + var j = yy * 32 + xx * 2; + subU[pos] = (U[j + 0] + U[j + 1] + U[j + 16] + U[j + 17]) * 0.25f; + subV[pos] = (V[j + 0] + V[j + 1] + V[j + 16] + V[j + 17]) * 0.25f; + } - public static byte* stbiw__zlib_flushf(byte* data, uint* bitbuffer, int* bitcount) - { - while (*bitcount >= 8) - { - if (data == null || ((int*)data - 2)[1] + 1 >= ((int*)data - 2)[0]) - stbiw__sbgrowf((void**)&data, 1, sizeof(byte)); + DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subU, 8, fdtbl_UV, DCU, + stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); + DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subV, 8, fdtbl_UV, DCV, + stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); + } + } + } + else + { + var Y = stackalloc float[64]; + var U = stackalloc float[64]; + var V = stackalloc float[64]; + for (y = 0; y < height; y += 8) + for (x = 0; x < width; x += 8) + { + for (row = y, pos = 0; row < y + 8; ++row) + { + var clamped_row = row < height ? row : height - 1; + var base_p = + (stbi__flip_vertically_on_write != 0 ? height - 1 - clamped_row : clamped_row) * width * + comp; + for (col = x; col < x + 8; ++col, ++pos) + { + var p = base_p + (col < width ? col : width - 1) * comp; + float r = dataR[p]; + float g = dataG[p]; + float b = dataB[p]; + Y[pos] = +0.29900f * r + 0.58700f * g + 0.11400f * b - 128; + U[pos] = -0.16874f * r - 0.33126f * g + 0.50000f * b; + V[pos] = +0.50000f * r - 0.41869f * g - 0.08131f * b; + } + } - var index = ((int*)data - 2)[1]++; - var value = (byte)(*bitbuffer & 0xff); - data[index] = value; + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y, 8, fdtbl_Y, DCY, stbi_write_jpg_core_YDC_HT, + stbi_write_jpg_core_YAC_HT); + DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, U, 8, fdtbl_UV, DCU, + stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); + DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, V, 8, fdtbl_UV, DCV, + stbi_write_jpg_core_UVDC_HT, stbi_write_jpg_core_UVAC_HT); + } + } - *bitbuffer >>= 8; - *bitcount -= 8; + stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, stbi_write_jpg_core_fillBits[0], + stbi_write_jpg_core_fillBits[1]); } - return data; + stbiw__putc(s, 0xFF); + stbiw__putc(s, 0xD9); + return 1; } public class stbi__write_context From 8c381af8fab504c189dc7ac7c0dac2221ab6442f Mon Sep 17 00:00:00 2001 From: Austin Hale <32556981+austinbhale@users.noreply.github.com> Date: Wed, 18 Jan 2023 18:07:29 -0500 Subject: [PATCH 22/23] feat: add the `void*` data argument for HDR images --- src/ImageWriter.cs | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/src/ImageWriter.cs b/src/ImageWriter.cs index 3a03de3..a92f89c 100644 --- a/src/ImageWriter.cs +++ b/src/ImageWriter.cs @@ -104,6 +104,19 @@ public void WriteTga(byte[] data, int width, int height, ColorComponents compone } } + public void WriteHdr(void* data, int width, int height, ColorComponents components, Stream dest) + { + try + { + _stream = dest; + StbImageWrite.stbi_write_hdr_to_func(WriteCallback, null, width, height, (int)components, (float*)data); + } + finally + { + _stream = null; + } + } + public void WriteHdr(byte[] data, int width, int height, ColorComponents components, Stream dest) { CheckParams(data, width, height, components); From 396ec5f2846c26237616c656b93de1b5e87d6f18 Mon Sep 17 00:00:00 2001 From: Roman Shapiro Date: Tue, 26 May 2026 07:37:08 +0700 Subject: [PATCH 23/23] Added FUNDING/Sponsor --- .github/FUNDING.yml | 5 +++-- README.md | 10 ++++++++++ 2 files changed, 13 insertions(+), 2 deletions(-) diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml index bec1481..eef3ce1 100644 --- a/.github/FUNDING.yml +++ b/.github/FUNDING.yml @@ -1,2 +1,3 @@ -patreon: rds1983 -custom: https://boosty.to/rds1983 \ No newline at end of file +custom: + - "https://boosty.to/rds1983" + - "https://t.me/rds1983" \ No newline at end of file diff --git a/README.md b/README.md index 4a03131..2a219ac 100644 --- a/README.md +++ b/README.md @@ -41,6 +41,16 @@ Public Domain # Who uses it? [MonoGame](http://www.monogame.net/) uses StbImageWriteSharp for Texture2D.SaveAs +## Sponsor +If this project is useful for you, you can support development: +- Boosty: https://boosty.to/rds1983 +- Telegram Wallet: https://t.me/rds1983 + +### Crypto +USDT (TON): `UQCQy6tFInPvqinE44zHY4R0rYS3niaBikkqiSyGmyoAMwyO` + +TON: `UQCQy6tFInPvqinE44zHY4R0rYS3niaBikkqiSyGmyoAMwyO` + # Credits * [stb](https://github.com/nothings/stb)