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/*
* Copyright (c) 2021 Samsung Electronics Co., Ltd. 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 <memory.h>
#include <turbojpeg.h>
#include "tvgLoader.h"
#include "tvgJpgLoader.h"
/************************************************************************/
/* Internal Class Implementation */
/************************************************************************/
void JpgLoader::clear()
{
if (freeData) free(data);
data = nullptr;
size = 0;
freeData = false;
}
/************************************************************************/
/* External Class Implementation */
/************************************************************************/
JpgLoader::JpgLoader()
{
jpegDecompressor = tjInitDecompress();
}
JpgLoader::~JpgLoader()
{
if (freeData) free(data);
tjDestroy(jpegDecompressor);
//This image is shared with raster engine.
tjFree(image);
}
bool JpgLoader::open(const string& path)
{
clear();
auto jpegFile = fopen(path.c_str(), "rb");
if (!jpegFile) return false;
auto ret = false;
//determine size
if (fseek(jpegFile, 0, SEEK_END) < 0) goto finalize;
if (((size = ftell(jpegFile)) < 1)) goto finalize;
if (fseek(jpegFile, 0, SEEK_SET)) goto finalize;
data = (unsigned char *) malloc(size);
if (!data) goto finalize;
freeData = true;
if (fread(data, size, 1, jpegFile) < 1) goto failure;
int width, height, subSample, colorSpace;
if (tjDecompressHeader3(jpegDecompressor, data, size, &width, &height, &subSample, &colorSpace) < 0) {
TVGERR("JPG LOADER", "%s", tjGetErrorStr());
goto failure;
}
w = static_cast<float>(width);
h = static_cast<float>(height);
ret = true;
goto finalize;
failure:
clear();
finalize:
fclose(jpegFile);
return ret;
}
bool JpgLoader::open(const char* data, uint32_t size, bool copy)
{
clear();
int width, height, subSample, colorSpace;
if (tjDecompressHeader3(jpegDecompressor, (unsigned char *) data, size, &width, &height, &subSample, &colorSpace) < 0) return false;
if (copy) {
this->data = (unsigned char *) malloc(size);
if (!this->data) return false;
memcpy((unsigned char *)this->data, data, size);
freeData = true;
} else {
this->data = (unsigned char *) data;
freeData = false;
}
w = static_cast<float>(width);
h = static_cast<float>(height);
this->size = size;
return true;
}
bool JpgLoader::read()
{
if (image) tjFree(image);
image = (unsigned char *)tjAlloc(static_cast<int>(w) * static_cast<int>(h) * tjPixelSize[TJPF_BGRX]);
if (!image) return false;
//decompress jpg image
if (tjDecompress2(jpegDecompressor, data, size, image, static_cast<int>(w), 0, static_cast<int>(h), TJPF_BGRX, 0) < 0) {
TVGERR("JPG LOADER", "%s", tjGetErrorStr());
tjFree(image);
image = nullptr;
return false;
}
return true;
}
bool JpgLoader::close()
{
clear();
return true;
}
unique_ptr<Surface> JpgLoader::bitmap()
{
if (!image) return nullptr;
auto surface = static_cast<Surface*>(malloc(sizeof(Surface)));
surface->buffer = (uint32_t*)(image);
surface->stride = w;
surface->w = w;
surface->h = h;
surface->cs = SwCanvas::ARGB8888;
return unique_ptr<Surface>(surface);
}
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