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https://github.com/thorvg/thorvg.git
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cd5116b053
* common: added colorSpace() function This patch introduces colorSpace() function for SW and GL engine. * infra: change LoadModule:read() into LoadModule:read(uint32_t colorspace) This patch changes LoadModule:read() into LoadModule:read(uint32_t colorspace) * picture: implement passing colorspace into loader This patch implements passing colorspace into loaders. Loader->read is now called on the first update. * external_jpg_loader: support colorspaces * external_png_loader: support colorspaces
123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
/*
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* Copyright (c) 2020-2021 Samsung Electronics Co., Ltd. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <memory.h>
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#include "tvgLoader.h"
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#include "tvgPngLoader.h"
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/************************************************************************/
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/* Internal Class Implementation */
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/************************************************************************/
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void PngLoader::clear()
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{
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if (freeData) free(data);
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data = nullptr;
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freeData = false;
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}
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/************************************************************************/
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/* External Class Implementation */
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/************************************************************************/
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PngLoader::PngLoader()
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{
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image = static_cast<png_imagep>(calloc(1, sizeof(png_image)));
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image->version = PNG_IMAGE_VERSION;
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image->opaque = NULL;
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}
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PngLoader::~PngLoader()
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{
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if (freeData) free(data);
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data = nullptr;
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if (content) {
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free((void*)content);
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content = nullptr;
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}
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free(image);
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}
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bool PngLoader::open(const string& path)
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{
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clear();
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image->opaque = NULL;
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if (!png_image_begin_read_from_file(image, path.c_str())) return false;
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w = (float)image->width;
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h = (float)image->height;
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return true;
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}
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bool PngLoader::open(const char* data, uint32_t size, bool copy)
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{
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clear();
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image->opaque = NULL;
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if (copy) {
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this->data = (char *) malloc(size);
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if (!this->data) return false;
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memcpy(this->data, data, size);
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freeData = true;
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} else {
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this->data = (char *) data;
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}
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if (!png_image_begin_read_from_memory(image, this->data, size)) return false;
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w = (float)image->width;
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h = (float)image->height;
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return true;
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}
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bool PngLoader::read(uint32_t colorspace)
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{
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png_bytep buffer;
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image->format = (colorspace == tvg::SwCanvas::ABGR8888) ? PNG_FORMAT_RGBA : PNG_FORMAT_BGRA;
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buffer = static_cast<png_bytep>(malloc(PNG_IMAGE_SIZE((*image))));
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if (!buffer) {
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//out of memory, only time when libpng doesnt free its data
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png_image_free(image);
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return false;
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}
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if (!png_image_finish_read(image, NULL, buffer, 0, NULL)) return false;
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content = reinterpret_cast<uint32_t*>(buffer);
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return true;
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}
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bool PngLoader::close()
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{
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png_image_free(image);
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return true;
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}
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const uint32_t* PngLoader::pixels()
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{
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return this->content;
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}
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