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159 lines
4 KiB
C++
159 lines
4 KiB
C++
/*
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* Copyright (c) 2021 - 2022 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 "tvgJpgLoader.h"
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/************************************************************************/
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/* Internal Class Implementation */
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/************************************************************************/
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static inline uint32_t CHANGE_COLORSPACE(uint32_t c)
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{
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return (c & 0xff000000) + ((c & 0x00ff0000)>>16) + (c & 0x0000ff00) + ((c & 0x000000ff)<<16);
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}
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static void _changeColorSpace(uint32_t* data, uint32_t w, uint32_t h)
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{
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auto buffer = data;
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for (uint32_t y = 0; y < h; ++y, buffer += w) {
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auto src = buffer;
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for (uint32_t x = 0; x < w; ++x, ++src) {
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*src = CHANGE_COLORSPACE(*src);
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}
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}
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}
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void JpgLoader::clear()
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{
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jpgdDelete(decoder);
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if (freeData) free(data);
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decoder = nullptr;
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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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JpgLoader::~JpgLoader()
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{
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jpgdDelete(decoder);
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if (freeData) free(data);
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free(image);
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}
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bool JpgLoader::open(const string& path)
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{
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clear();
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int width, height;
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decoder = jpgdHeader(path.c_str(), &width, &height);
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if (!decoder) return false;
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w = static_cast<float>(width);
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h = static_cast<float>(height);
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return true;
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}
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bool JpgLoader::open(const char* data, uint32_t size, bool copy)
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{
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clear();
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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((char *)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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freeData = false;
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}
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int width, height;
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decoder = jpgdHeader(this->data, size, &width, &height);
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if (!decoder) return false;
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w = static_cast<float>(width);
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h = static_cast<float>(height);
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return true;
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}
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bool JpgLoader::read()
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{
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if (!decoder || 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 JpgLoader::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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unique_ptr<Surface> JpgLoader::bitmap(uint32_t colorSpace)
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{
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this->done();
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if (!image) return nullptr;
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if (this->colorSpace != colorSpace) {
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this->colorSpace = colorSpace;
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_changeColorSpace(reinterpret_cast<uint32_t*>(image), w, h);
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}
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auto surface = static_cast<Surface*>(malloc(sizeof(Surface)));
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surface->buffer = reinterpret_cast<uint32_t*>(image);
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surface->stride = static_cast<uint32_t>(w);
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surface->w = static_cast<uint32_t>(w);
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surface->h = static_cast<uint32_t>(h);
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surface->cs = colorSpace;
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return unique_ptr<Surface>(surface);
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}
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void JpgLoader::run(unsigned tid)
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{
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if (image) {
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free(image);
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image = nullptr;
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}
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image = jpgdDecompress(decoder);
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}
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