From 9c520ef5179022f08b3883c0a1124ae5f8403237 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jos=C3=A9=20Fonseca?= Date: Sat, 2 Jul 2011 15:35:44 +0100 Subject: [PATCH] Split image code per file format. --- CMakeLists.txt | 3 + image.cpp | 375 ------------------------------------------------- image_bmp.cpp | 139 ++++++++++++++++++ image_png.cpp | 312 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 454 insertions(+), 375 deletions(-) create mode 100644 image_bmp.cpp create mode 100644 image_png.cpp diff --git a/CMakeLists.txt b/CMakeLists.txt index 1b10b7e..c015d67 100755 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -160,6 +160,9 @@ add_library (common trace_parser.cpp trace_writer.cpp trace_model_writer.cpp + image.cpp + image_bmp.cpp + image_png.cpp ${os} ) diff --git a/image.cpp b/image.cpp index 3aa0fe5..4da9c13 100644 --- a/image.cpp +++ b/image.cpp @@ -25,15 +25,8 @@ **************************************************************************/ -#include -#include - #include #include -#include -#include - -#include #include "image.hpp" @@ -41,264 +34,6 @@ namespace Image { -#pragma pack(push,2) -struct FileHeader { - uint16_t bfType; - uint32_t bfSize; - uint16_t bfReserved1; - uint16_t bfReserved2; - uint32_t bfOffBits; -}; -#pragma pack(pop) - -struct InfoHeader { - uint32_t biSize; - int32_t biWidth; - int32_t biHeight; - uint16_t biPlanes; - uint16_t biBitCount; - uint32_t biCompression; - uint32_t biSizeImage; - int32_t biXPelsPerMeter; - int32_t biYPelsPerMeter; - uint32_t biClrUsed; - uint32_t biClrImportant; -}; - -struct Pixel { - uint8_t rgbBlue; - uint8_t rgbGreen; - uint8_t rgbRed; - uint8_t rgbAlpha; -}; - - -bool -Image::writeBMP(const char *filename) const { - assert(channels == 4); - - struct FileHeader bmfh; - struct InfoHeader bmih; - unsigned x, y; - - bmfh.bfType = 0x4d42; - bmfh.bfSize = 14 + 40 + height*width*4; - bmfh.bfReserved1 = 0; - bmfh.bfReserved2 = 0; - bmfh.bfOffBits = 14 + 40; - - bmih.biSize = 40; - bmih.biWidth = width; - bmih.biHeight = height; - bmih.biPlanes = 1; - bmih.biBitCount = 32; - bmih.biCompression = 0; - bmih.biSizeImage = height*width*4; - bmih.biXPelsPerMeter = 0; - bmih.biYPelsPerMeter = 0; - bmih.biClrUsed = 0; - bmih.biClrImportant = 0; - - std::ofstream stream(filename, std::ofstream::binary); - - if (!stream) - return false; - - stream.write((const char *)&bmfh, 14); - stream.write((const char *)&bmih, 40); - - unsigned stride = width*4; - - if (flipped) { - for (y = 0; y < height; ++y) { - const unsigned char *ptr = pixels + y * stride; - for (x = 0; x < width; ++x) { - struct Pixel pixel; - pixel.rgbRed = ptr[x*4 + 0]; - pixel.rgbGreen = ptr[x*4 + 1]; - pixel.rgbBlue = ptr[x*4 + 2]; - pixel.rgbAlpha = ptr[x*4 + 3]; - stream.write((const char *)&pixel, 4); - } - } - } else { - y = height; - while (y--) { - const unsigned char *ptr = pixels + y * stride; - for (x = 0; x < width; ++x) { - struct Pixel pixel; - pixel.rgbRed = ptr[x*4 + 0]; - pixel.rgbGreen = ptr[x*4 + 1]; - pixel.rgbBlue = ptr[x*4 + 2]; - pixel.rgbAlpha = ptr[x*4 + 3]; - stream.write((const char *)&pixel, 4); - } - } - } - - stream.close(); - - return true; -} - -bool -Image::writePNG(const char *filename) const { - FILE *fp; - png_structp png_ptr; - png_infop info_ptr; - - fp = fopen(filename, "wb"); - if (!fp) - goto no_fp; - - png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (!png_ptr) - goto no_png; - - info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) { - png_destroy_write_struct(&png_ptr, NULL); - goto no_png; - } - - if (setjmp(png_jmpbuf(png_ptr))) { - png_destroy_write_struct(&png_ptr, &info_ptr); - goto no_png; - } - - png_init_io(png_ptr, fp); - - int color_type; - switch (channels) { - case 4: - color_type = PNG_COLOR_TYPE_RGB_ALPHA; - break; - case 3: - color_type = PNG_COLOR_TYPE_RGB; - break; - case 2: - color_type = PNG_COLOR_TYPE_GRAY_ALPHA; - break; - case 1: - color_type = PNG_COLOR_TYPE_GRAY; - break; - default: - assert(0); - return false; - } - - png_set_IHDR(png_ptr, info_ptr, width, height, 8, color_type, - PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); - - png_set_compression_level(png_ptr, Z_DEFAULT_COMPRESSION); - - png_write_info(png_ptr, info_ptr); - - if (!flipped) { - for (unsigned y = 0; y < height; ++y) { - png_bytep row = (png_bytep)(pixels + y*width*channels); - png_write_rows(png_ptr, &row, 1); - } - } else { - unsigned y = height; - while (y--) { - png_bytep row = (png_bytep)(pixels + y*width*channels); - png_write_rows(png_ptr, &row, 1); - } - } - - png_write_end(png_ptr, info_ptr); - png_destroy_write_struct(&png_ptr, &info_ptr); - - fclose(fp); - return true; - -no_png: - fclose(fp); -no_fp: - return false; -} - - -Image * -readPNG(const char *filename) -{ - FILE *fp; - png_structp png_ptr; - png_infop info_ptr; - png_infop end_info; - Image *image; - - fp = fopen(filename, "rb"); - if (!fp) - goto no_fp; - - png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (!png_ptr) - goto no_png; - - info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) { - png_destroy_read_struct(&png_ptr, NULL, NULL); - goto no_png; - } - - end_info = png_create_info_struct(png_ptr); - if (!end_info) { - png_destroy_read_struct(&png_ptr, &info_ptr, NULL); - goto no_png; - } - - if (setjmp(png_jmpbuf(png_ptr))) { - png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); - goto no_png; - } - - png_init_io(png_ptr, fp); - - png_read_info(png_ptr, info_ptr); - - png_uint_32 width, height; - int bit_depth, color_type, interlace_type, compression_type, filter_method; - - png_get_IHDR(png_ptr, info_ptr, - &width, &height, - &bit_depth, &color_type, &interlace_type, - &compression_type, &filter_method); - - image = new Image(width, height); - if (!image) - goto no_image; - - /* Convert to RGBA8 */ - if (color_type == PNG_COLOR_TYPE_PALETTE) - png_set_palette_to_rgb(png_ptr); - if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) - png_set_expand_gray_1_2_4_to_8(png_ptr); - if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) - png_set_tRNS_to_alpha(png_ptr); - if (bit_depth == 16) - png_set_strip_16(png_ptr); - - for (unsigned y = 0; y < height; ++y) { - png_bytep row = (png_bytep)(image->pixels + y*width*4); - png_read_row(png_ptr, row, NULL); - } - - png_read_end(png_ptr, info_ptr); - png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); - fclose(fp); - return image; - -no_image: - png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); -no_png: - fclose(fp); -no_fp: - return NULL; -} - - double Image::compare(Image &ref) { if (width != ref.width || @@ -337,115 +72,5 @@ double Image::compare(Image &ref) return precision; } -struct png_tmp_buffer -{ - char *buffer; - size_t size; -}; - -static void -pngWriteCallback(png_structp png_ptr, png_bytep data, png_size_t length) -{ - struct png_tmp_buffer *buf = (struct png_tmp_buffer*) png_get_io_ptr(png_ptr); - size_t nsize = buf->size + length; - - /* allocate or grow buffer */ - if (buf->buffer) - buf->buffer = (char*)realloc(buf->buffer, nsize); - else - buf->buffer = (char*)malloc(nsize); - - if (!buf->buffer) - png_error(png_ptr, "Buffer allocation error"); - - memcpy(buf->buffer + buf->size, data, length); - buf->size += length; -} - -bool writePixelsToBuffer(unsigned char *pixels, - unsigned width, unsigned height, unsigned numChannels, - bool flipped, - char **buffer, - int *size) -{ - struct png_tmp_buffer png_mem; - png_structp png_ptr; - png_infop info_ptr; - int type; - - png_mem.buffer = NULL; - png_mem.size = 0; - - switch (numChannels) { - case 4: - type = PNG_COLOR_TYPE_RGB_ALPHA; - break; - case 3: - type = PNG_COLOR_TYPE_RGB; - break; - case 2: - type = PNG_COLOR_TYPE_GRAY_ALPHA; - break; - case 1: - type = PNG_COLOR_TYPE_GRAY; - break; - default: - goto no_png; - } - - png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (!png_ptr) - goto no_png; - - info_ptr = png_create_info_struct(png_ptr); - if (!info_ptr) { - png_destroy_write_struct(&png_ptr, NULL); - goto no_png; - } - - if (setjmp(png_jmpbuf(png_ptr))) { - png_destroy_write_struct(&png_ptr, &info_ptr); - goto no_png; - } - - png_set_write_fn(png_ptr, &png_mem, pngWriteCallback, NULL); - - png_set_IHDR(png_ptr, info_ptr, width, height, 8, - type, PNG_INTERLACE_NONE, - PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); - - png_set_compression_level(png_ptr, Z_DEFAULT_COMPRESSION); - - png_write_info(png_ptr, info_ptr); - - if (!flipped) { - for (unsigned y = 0; y < height; ++y) { - png_bytep row = (png_bytep)(pixels + y*width*numChannels); - png_write_rows(png_ptr, &row, 1); - } - } else { - unsigned y = height; - while (y--) { - png_bytep row = (png_bytep)(pixels + y*width*numChannels); - png_write_rows(png_ptr, &row, 1); - } - } - - png_write_end(png_ptr, info_ptr); - png_destroy_write_struct(&png_ptr, &info_ptr); - - *buffer = png_mem.buffer; - *size = png_mem.size; - - return true; - -no_png: - *buffer = NULL; - *size = 0; - - if (png_mem.buffer) - free(png_mem.buffer); - return false; -} } /* namespace Image */ diff --git a/image_bmp.cpp b/image_bmp.cpp new file mode 100644 index 0000000..346f39a --- /dev/null +++ b/image_bmp.cpp @@ -0,0 +1,139 @@ +/************************************************************************** + * + * Copyright 2011 Jose Fonseca + * Copyright 2008-2010 VMware, Inc. + * All Rights Reserved. + * + * 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. + * + **************************************************************************/ + + +#include +#include + +#include "image.hpp" + + +namespace Image { + + +#pragma pack(push,2) +struct FileHeader { + uint16_t bfType; + uint32_t bfSize; + uint16_t bfReserved1; + uint16_t bfReserved2; + uint32_t bfOffBits; +}; +#pragma pack(pop) + +struct InfoHeader { + uint32_t biSize; + int32_t biWidth; + int32_t biHeight; + uint16_t biPlanes; + uint16_t biBitCount; + uint32_t biCompression; + uint32_t biSizeImage; + int32_t biXPelsPerMeter; + int32_t biYPelsPerMeter; + uint32_t biClrUsed; + uint32_t biClrImportant; +}; + +struct Pixel { + uint8_t rgbBlue; + uint8_t rgbGreen; + uint8_t rgbRed; + uint8_t rgbAlpha; +}; + + +bool +Image::writeBMP(const char *filename) const { + assert(channels == 4); + + struct FileHeader bmfh; + struct InfoHeader bmih; + unsigned x, y; + + bmfh.bfType = 0x4d42; + bmfh.bfSize = 14 + 40 + height*width*4; + bmfh.bfReserved1 = 0; + bmfh.bfReserved2 = 0; + bmfh.bfOffBits = 14 + 40; + + bmih.biSize = 40; + bmih.biWidth = width; + bmih.biHeight = height; + bmih.biPlanes = 1; + bmih.biBitCount = 32; + bmih.biCompression = 0; + bmih.biSizeImage = height*width*4; + bmih.biXPelsPerMeter = 0; + bmih.biYPelsPerMeter = 0; + bmih.biClrUsed = 0; + bmih.biClrImportant = 0; + + std::ofstream stream(filename, std::ofstream::binary); + + if (!stream) { + return false; + } + + stream.write((const char *)&bmfh, 14); + stream.write((const char *)&bmih, 40); + + unsigned stride = width*4; + + if (flipped) { + for (y = 0; y < height; ++y) { + const unsigned char *ptr = pixels + y * stride; + for (x = 0; x < width; ++x) { + struct Pixel pixel; + pixel.rgbRed = ptr[x*4 + 0]; + pixel.rgbGreen = ptr[x*4 + 1]; + pixel.rgbBlue = ptr[x*4 + 2]; + pixel.rgbAlpha = ptr[x*4 + 3]; + stream.write((const char *)&pixel, 4); + } + } + } else { + y = height; + while (y--) { + const unsigned char *ptr = pixels + y * stride; + for (x = 0; x < width; ++x) { + struct Pixel pixel; + pixel.rgbRed = ptr[x*4 + 0]; + pixel.rgbGreen = ptr[x*4 + 1]; + pixel.rgbBlue = ptr[x*4 + 2]; + pixel.rgbAlpha = ptr[x*4 + 3]; + stream.write((const char *)&pixel, 4); + } + } + } + + stream.close(); + + return true; +} + + +} /* namespace Image */ diff --git a/image_png.cpp b/image_png.cpp new file mode 100644 index 0000000..fd22213 --- /dev/null +++ b/image_png.cpp @@ -0,0 +1,312 @@ +/************************************************************************** + * + * Copyright 2011 Jose Fonseca + * Copyright 2008-2010 VMware, Inc. + * All Rights Reserved. + * + * 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. + * + **************************************************************************/ + + +#include +#include + +#include +#include +#include + +#include + +#include "image.hpp" + + +namespace Image { + + +bool +Image::writePNG(const char *filename) const { + FILE *fp; + png_structp png_ptr; + png_infop info_ptr; + + fp = fopen(filename, "wb"); + if (!fp) + goto no_fp; + + png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); + if (!png_ptr) + goto no_png; + + info_ptr = png_create_info_struct(png_ptr); + if (!info_ptr) { + png_destroy_write_struct(&png_ptr, NULL); + goto no_png; + } + + if (setjmp(png_jmpbuf(png_ptr))) { + png_destroy_write_struct(&png_ptr, &info_ptr); + goto no_png; + } + + png_init_io(png_ptr, fp); + + int color_type; + switch (channels) { + case 4: + color_type = PNG_COLOR_TYPE_RGB_ALPHA; + break; + case 3: + color_type = PNG_COLOR_TYPE_RGB; + break; + case 2: + color_type = PNG_COLOR_TYPE_GRAY_ALPHA; + break; + case 1: + color_type = PNG_COLOR_TYPE_GRAY; + break; + default: + assert(0); + return false; + } + + png_set_IHDR(png_ptr, info_ptr, width, height, 8, color_type, + PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); + + png_set_compression_level(png_ptr, Z_DEFAULT_COMPRESSION); + + png_write_info(png_ptr, info_ptr); + + if (!flipped) { + for (unsigned y = 0; y < height; ++y) { + png_bytep row = (png_bytep)(pixels + y*width*channels); + png_write_rows(png_ptr, &row, 1); + } + } else { + unsigned y = height; + while (y--) { + png_bytep row = (png_bytep)(pixels + y*width*channels); + png_write_rows(png_ptr, &row, 1); + } + } + + png_write_end(png_ptr, info_ptr); + png_destroy_write_struct(&png_ptr, &info_ptr); + + fclose(fp); + return true; + +no_png: + fclose(fp); +no_fp: + return false; +} + + +Image * +readPNG(const char *filename) +{ + FILE *fp; + png_structp png_ptr; + png_infop info_ptr; + png_infop end_info; + Image *image; + + fp = fopen(filename, "rb"); + if (!fp) + goto no_fp; + + png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); + if (!png_ptr) + goto no_png; + + info_ptr = png_create_info_struct(png_ptr); + if (!info_ptr) { + png_destroy_read_struct(&png_ptr, NULL, NULL); + goto no_png; + } + + end_info = png_create_info_struct(png_ptr); + if (!end_info) { + png_destroy_read_struct(&png_ptr, &info_ptr, NULL); + goto no_png; + } + + if (setjmp(png_jmpbuf(png_ptr))) { + png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); + goto no_png; + } + + png_init_io(png_ptr, fp); + + png_read_info(png_ptr, info_ptr); + + png_uint_32 width, height; + int bit_depth, color_type, interlace_type, compression_type, filter_method; + + png_get_IHDR(png_ptr, info_ptr, + &width, &height, + &bit_depth, &color_type, &interlace_type, + &compression_type, &filter_method); + + image = new Image(width, height); + if (!image) + goto no_image; + + /* Convert to RGBA8 */ + if (color_type == PNG_COLOR_TYPE_PALETTE) + png_set_palette_to_rgb(png_ptr); + if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) + png_set_expand_gray_1_2_4_to_8(png_ptr); + if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) + png_set_tRNS_to_alpha(png_ptr); + if (bit_depth == 16) + png_set_strip_16(png_ptr); + + for (unsigned y = 0; y < height; ++y) { + png_bytep row = (png_bytep)(image->pixels + y*width*4); + png_read_row(png_ptr, row, NULL); + } + + png_read_end(png_ptr, info_ptr); + png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); + fclose(fp); + return image; + +no_image: + png_destroy_read_struct(&png_ptr, &info_ptr, &end_info); +no_png: + fclose(fp); +no_fp: + return NULL; +} + + +struct png_tmp_buffer +{ + char *buffer; + size_t size; +}; + +static void +pngWriteCallback(png_structp png_ptr, png_bytep data, png_size_t length) +{ + struct png_tmp_buffer *buf = (struct png_tmp_buffer*) png_get_io_ptr(png_ptr); + size_t nsize = buf->size + length; + + /* allocate or grow buffer */ + if (buf->buffer) + buf->buffer = (char*)realloc(buf->buffer, nsize); + else + buf->buffer = (char*)malloc(nsize); + + if (!buf->buffer) + png_error(png_ptr, "Buffer allocation error"); + + memcpy(buf->buffer + buf->size, data, length); + buf->size += length; +} + +bool writePixelsToBuffer(unsigned char *pixels, + unsigned width, unsigned height, unsigned numChannels, + bool flipped, + char **buffer, + int *size) +{ + struct png_tmp_buffer png_mem; + png_structp png_ptr; + png_infop info_ptr; + int type; + + png_mem.buffer = NULL; + png_mem.size = 0; + + switch (numChannels) { + case 4: + type = PNG_COLOR_TYPE_RGB_ALPHA; + break; + case 3: + type = PNG_COLOR_TYPE_RGB; + break; + case 2: + type = PNG_COLOR_TYPE_GRAY_ALPHA; + break; + case 1: + type = PNG_COLOR_TYPE_GRAY; + break; + default: + goto no_png; + } + + png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); + if (!png_ptr) + goto no_png; + + info_ptr = png_create_info_struct(png_ptr); + if (!info_ptr) { + png_destroy_write_struct(&png_ptr, NULL); + goto no_png; + } + + if (setjmp(png_jmpbuf(png_ptr))) { + png_destroy_write_struct(&png_ptr, &info_ptr); + goto no_png; + } + + png_set_write_fn(png_ptr, &png_mem, pngWriteCallback, NULL); + + png_set_IHDR(png_ptr, info_ptr, width, height, 8, + type, PNG_INTERLACE_NONE, + PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); + + png_set_compression_level(png_ptr, Z_DEFAULT_COMPRESSION); + + png_write_info(png_ptr, info_ptr); + + if (!flipped) { + for (unsigned y = 0; y < height; ++y) { + png_bytep row = (png_bytep)(pixels + y*width*numChannels); + png_write_rows(png_ptr, &row, 1); + } + } else { + unsigned y = height; + while (y--) { + png_bytep row = (png_bytep)(pixels + y*width*numChannels); + png_write_rows(png_ptr, &row, 1); + } + } + + png_write_end(png_ptr, info_ptr); + png_destroy_write_struct(&png_ptr, &info_ptr); + + *buffer = png_mem.buffer; + *size = png_mem.size; + + return true; + +no_png: + *buffer = NULL; + *size = 0; + + if (png_mem.buffer) + free(png_mem.buffer); + return false; +} + +} /* namespace Image */ -- 2.43.0