158 lines
3.8 KiB
C++
158 lines
3.8 KiB
C++
/*
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* Copyright (c) 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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lodepng_state_cleanup(&state);
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if (freeData) free(data);
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data = nullptr;
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size = 0;
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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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lodepng_state_init(&state);
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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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}
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bool PngLoader::open(const string& path)
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{
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clear();
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auto pngFile = fopen(path.c_str(), "rb");
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if (!pngFile) return false;
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auto ret = false;
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//determine size
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if (fseek(pngFile, 0, SEEK_END) < 0) goto finalize;
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if (((size = ftell(pngFile)) < 1)) goto finalize;
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if (fseek(pngFile, 0, SEEK_SET)) goto finalize;
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data = (unsigned char *) malloc(size);
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if (!data) goto finalize;
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freeData = true;
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if (fread(data, size, 1, pngFile) < 1) goto failure;
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lodepng_state_init(&state);
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unsigned int width, height;
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if (lodepng_inspect(&width, &height, &state, data, size) > 0) goto failure;
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w = static_cast<float>(width);
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h = static_cast<float>(height);
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ret = true;
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goto finalize;
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failure:
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clear();
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finalize:
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fclose(pngFile);
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return ret;
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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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lodepng_state_init(&state);
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unsigned int width, height;
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if (lodepng_inspect(&width, &height, &state, (unsigned char*)(data), size) > 0) return false;
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if (copy) {
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this->data = (unsigned char *) malloc(size);
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if (!this->data) return false;
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memcpy((unsigned char *)this->data, data, size);
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freeData = true;
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} else {
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this->data = (unsigned char *) data;
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freeData = false;
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}
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w = static_cast<float>(width);
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h = static_cast<float>(height);
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this->size = size;
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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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if (!data || w <= 0 || h <= 0) return false;
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TaskScheduler::request(this);
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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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this->done();
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clear();
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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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this->done();
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return (const uint32_t*) image;
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}
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void PngLoader::run(unsigned tid)
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{
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auto width = static_cast<unsigned>(w);
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auto height = static_cast<unsigned>(h);
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lodepng_decode(&image, &width, &height, &state, data, size);
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} |