92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
|
/*
|
||
|
|
* Copyright (c) 2020-2021 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 "tvgLoader.h"
|
||
|
|
#include "tvgPngLoader.h"
|
||
|
|
|
||
|
|
PngLoader::PngLoader()
|
||
|
|
{
|
||
|
|
image = static_cast<png_imagep>(calloc(1, sizeof(png_image)));
|
||
|
|
image->version = PNG_IMAGE_VERSION;
|
||
|
|
image->opaque = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
PngLoader::~PngLoader()
|
||
|
|
{
|
||
|
|
if (content) {
|
||
|
|
free((void*)content);
|
||
|
|
content = nullptr;
|
||
|
|
}
|
||
|
|
free(image);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool PngLoader::open(const string& path)
|
||
|
|
{
|
||
|
|
image->opaque = NULL;
|
||
|
|
|
||
|
|
if (!png_image_begin_read_from_file(image, path.c_str())) return false;
|
||
|
|
|
||
|
|
w = (float)image->width;
|
||
|
|
h = (float)image->height;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool PngLoader::open(const char* data, uint32_t size, bool copy)
|
||
|
|
{
|
||
|
|
image->opaque = NULL;
|
||
|
|
|
||
|
|
if (!png_image_begin_read_from_memory(image, data, size)) return false;
|
||
|
|
|
||
|
|
w = (float)image->width;
|
||
|
|
h = (float)image->height;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool PngLoader::read()
|
||
|
|
{
|
||
|
|
png_bytep buffer;
|
||
|
|
image->format = PNG_FORMAT_BGRA;
|
||
|
|
buffer = static_cast<png_bytep>(malloc(PNG_IMAGE_SIZE((*image))));
|
||
|
|
if (!buffer) {
|
||
|
|
//out of memory, only time when libpng doesnt free its data
|
||
|
|
png_image_free(image);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (!png_image_finish_read(image, NULL, buffer, 0, NULL)) return false;
|
||
|
|
content = reinterpret_cast<uint32_t*>(buffer);
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool PngLoader::close()
|
||
|
|
{
|
||
|
|
png_image_free(image);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
const uint32_t* PngLoader::pixels()
|
||
|
|
{
|
||
|
|
return this->content;
|
||
|
|
}
|