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ff20974632
This patch has 2 purposes, 1. revise the loaders infrastructure to support both static/external linking loaders. 2. add a template for static jpg/png loaders after external jpg/png. Our default loaders prefer static linking, external loaders are only available when dependent libraries on the build system are found. You might wonder why we have the external loaders together, they might be faster than static loaders since the popular libraries are likely to be well maintained, fine-grained optimized. Thus in this patch, meson tries to apply the external loaders first then see if the dependencies were found or not, if it's failed, it turns to the default static loaders. Next this patch, we need the contribution for actual static jpg/png loaders implementation. @Issue: https://github.com/Samsung/thorvg/issues/594
91 lines
2.5 KiB
C++
91 lines
2.5 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 "tvgLoader.h"
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#include "tvgPngLoader.h"
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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 (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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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 = image->width;
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h = 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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image->opaque = NULL;
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if (!png_image_begin_read_from_memory(image, data, size)) return false;
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w = image->width;
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h = image->height;
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return true;
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}
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bool PngLoader::read()
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{
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png_bytep buffer;
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image->format = 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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