Added webp support. (#124)

3rdparty/simplewebp/LICENSE.md

@@ -0,0 +1,10 @@
+Copyright (c) 2010 Google Inc., 2023 Miku AuahDark  
+_All rights reserved._
+ 
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

src/config.h

@@ -132,4 +132,10 @@
 #	define BIMG_CONFIG_PARSE_TGA BIMG_CONFIG_PARSE_ENABLE
 #endif // BIMG_CONFIG_PARSE_TGA
 
+/// WebP - lossy and lossless image format by Google.
+///
+#ifndef BIMG_CONFIG_PARSE_WEBP
+#	define BIMG_CONFIG_PARSE_WEBP BIMG_CONFIG_PARSE_ENABLE
+#endif // BIMG_CONFIG_PARSE_WEBP
+
 #endif // BIMG_CONFIG_H_HEADER_GUARD

src/image_decode.cpp

@@ -12,6 +12,7 @@ BX_PRAGMA_DIAGNOSTIC_PUSH()
 BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wtype-limits")
 BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wunused-parameter")
 BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wunused-value")
+BX_PRAGMA_DIAGNOSTIC_IGNORED_GCC("-Wcalloc-transposed-args")
 BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG("-Wdeprecated-declarations")
 BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4018) // warning C4018:  '<': signed/unsigned mismatch
 BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4100) // error C4100: '' : unreferenced formal parameter
@@ -58,6 +59,30 @@ void lodepng_free(void* _ptr)
 #	include <libheif/heif.h>
 #endif // BIMG_CONFIG_PARSE_HEIF
 
+#if BIMG_CONFIG_PARSE_WEBP
+BX_PRAGMA_DIAGNOSTIC_PUSH();
+BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wunused-function")
+BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wunused-parameter")
+BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wunused-variable")
+BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wsign-compare")
+BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wshadow")
+BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wmissing-field-initializers")
+BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wparentheses")
+BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wimplicit-fallthrough")
+BX_PRAGMA_DIAGNOSTIC_IGNORED_GCC("-Wtype-limits")
+BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4100) // warning C4100: unreferenced formal parameter
+BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4127) // warning C4127: conditional expression is constant
+BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4244) // warning C4244: conversion from 'X' to 'Y', possible loss of data
+BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4245) // warning C4245: conversion from 'X' to 'Y', signed/unsigned mismatch
+BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4267) // warning C4267: conversion from 'size_t' to 'X', possible loss of data
+BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4505) // warning C4505: unreferenced function with internal linkage has been removed
+BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4701) // warning C4701: potentially uninitialized local variable used
+#define SIMPLEWEBP_IMPLEMENTATION
+#define SIMPLEWEBP_DISABLE_STDIO
+#include <simplewebp/simplewebp.h>
+BX_PRAGMA_DIAGNOSTIC_POP();
+#endif // BIMG_CONFIG_PARSE_WEBP
+
 #define BIMG_USE_STB_IMAGE 0   \
 	||  BIMG_CONFIG_PARSE_JPEG \
 	||  BIMG_CONFIG_PARSE_BMP  \
@@ -994,6 +1019,118 @@ namespace bimg
 #endif // BIMG_CONFIG_PARSE_HEIF
 	}
 
+#if BIMG_CONFIG_PARSE_WEBP
+	static void* simpleWebpAlloc(void* _userdata, size_t _size)
+	{
+		bx::AllocatorI* allocator = (bx::AllocatorI*)_userdata;
+		return bx::alloc(allocator, _size);
+	}
+
+	static void simpleWebpFree(void* _userdata, void* _ptr)
+	{
+		bx::AllocatorI* allocator = (bx::AllocatorI*)_userdata;
+		bx::free(allocator, _ptr);
+	}
+
+	static void errorSetSimpleWebp(simplewebp_error _result, bx::Error* _err)
+	{
+		switch (_result)
+		{
+		case SIMPLEWEBP_ALLOC_ERROR:       BX_ERROR_SET(_err, BIMG_ERROR, "WebP: Failed to allocate memory."); break;
+		case SIMPLEWEBP_IO_ERROR:          BX_ERROR_SET(_err, BIMG_ERROR, "WebP: Input read error.");          break;
+		case SIMPLEWEBP_NOT_WEBP_ERROR:    BX_ERROR_SET(_err, BIMG_ERROR, "WebP: Not a WebP image.");          break;
+		case SIMPLEWEBP_CORRUPT_ERROR:     BX_ERROR_SET(_err, BIMG_ERROR, "WebP: Image corrupt.");             break;
+		case SIMPLEWEBP_UNSUPPORTED_ERROR: BX_ERROR_SET(_err, BIMG_ERROR, "WebP: Image unsupported.");         break;
+		case SIMPLEWEBP_IS_LOSSLESS_ERROR: BX_ERROR_SET(_err, BIMG_ERROR, "WebP: Image is lossless.");         break;
+		default:                           BX_ERROR_SET(_err, BIMG_ERROR, "WebP: Failed to parse image.");     break;
+		}
+	}
+#endif // BIMG_CONFIG_PARSE_WEBP
+
+	static ImageContainer* imageParseSimpleWebp(bx::AllocatorI* _allocator, const void* _data, uint32_t _size, bx::Error* _err)
+	{
+		BX_ERROR_SCOPE(_err);
+
+		// WebP file format:
+		//   bytes 0-3 : "RIFF"
+		//   bytes 4-7 : file size
+		//   bytes 8-11: "WEBP"
+		static uint8_t riffMagic[] = { 0x52, 0x49, 0x46, 0x46 }; // "RIFF"
+		static uint8_t webpMagic[] = { 0x57, 0x45, 0x42, 0x50 }; // "WEBP"
+
+		if (12 > _size
+		||  0 != bx::memCmp(_data, riffMagic, sizeof(riffMagic) )
+		||  0 != bx::memCmp( (const uint8_t*)_data + 8, webpMagic, sizeof(webpMagic) ) )
+		{
+			return NULL;
+		}
+
+#if BIMG_CONFIG_PARSE_WEBP
+		simplewebp_allocator allocator;
+		allocator.alloc    = simpleWebpAlloc;
+		allocator.free     = simpleWebpFree;
+		allocator.userdata = _allocator;
+
+		simplewebp* webp = NULL;
+		simplewebp_error err = simplewebp_load_from_memory( (void*)_data, _size, &allocator, &webp);
+
+		if (SIMPLEWEBP_NO_ERROR != err)
+		{
+			errorSetSimpleWebp(err, _err);
+			return NULL;
+		}
+
+		size_t width  = 0;
+		size_t height = 0;
+		simplewebp_get_dimensions(webp, &width, &height);
+
+		const uint32_t bufferSize = uint32_t(width * height * 4);
+		uint8_t* data = (uint8_t*)bx::alloc(_allocator, bufferSize);
+
+		err = simplewebp_decode(webp, data, NULL);
+		simplewebp_unload(webp);
+
+		if (SIMPLEWEBP_NO_ERROR != err)
+		{
+			bx::free(_allocator, data);
+			errorSetSimpleWebp(err, _err);
+			return NULL;
+		}
+
+		ImageContainer* output = imageAlloc(_allocator
+			, bimg::TextureFormat::RGBA8
+			, bx::narrowCast<uint16_t>(width)
+			, bx::narrowCast<uint16_t>(height)
+			, 0
+			, 1
+			, false
+			, false
+			, data
+			);
+
+		bool hasAlpha = false;
+
+		for (uint32_t ii = 0, num = uint32_t(width * height); ii < num; ++ii)
+		{
+			if (data[ii * 4 + 3] < UINT8_MAX)
+			{
+				hasAlpha = true;
+				break;
+			}
+		}
+
+		output->m_hasAlpha = hasAlpha;
+
+		bx::free(_allocator, data);
+
+		return output;
+#else
+		BX_UNUSED(_allocator, _data, _size);
+		BX_ERROR_SET(_err, BIMG_ERROR, "WebP parsing is disabled (BIMG_CONFIG_PARSE_WEBP).");
+		return NULL;
+#endif // BIMG_CONFIG_PARSE_WEBP
+	}
+
 	ImageContainer* imageParse(bx::AllocatorI* _allocator, const void* _data, uint32_t _size, TextureFormat::Enum _dstFormat, bx::Error* _err)
 	{
 		BX_ERROR_SCOPE(_err);
@@ -1005,7 +1142,8 @@ namespace bimg
 		input = NULL == input ? imageParseLodePng   (_allocator, _data, _size, _err) : input;
 		input = NULL == input ? imageParseTinyExr   (_allocator, _data, _size, _err) : input;
 		input = NULL == input ? imageParseJpeg      (_allocator, _data, _size, _err) : input;
-		input = NULL == input ? imageParseStbImage(_allocator, _data, _size, _err) : input;
+		input = NULL == input ? imageParseSimpleWebp(_allocator, _data, _size, _err) : input;
+		input = NULL == input ? imageParseStbImage  (_allocator, _data, _size, _err) : input;
 		input = NULL == input ? imageParseLibHeif   (_allocator, _data, _size, _err) : input;
 
 		if (NULL == input)
@@ -1014,6 +1152,7 @@ namespace bimg
 			{
 				BX_ERROR_SET(_err, BIMG_ERROR, "Unrecognized image format.");
 			}
+
 			return NULL;
 		}