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/*
Copyright (C) 2017-2018 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "image.h"
#include "image_store.h"
extern "C" {
#include <libavutil/buffer.h>
}
using std::shared_ptr;
void
ImageStore::buffer_free(void* opaque, uint8_t* data)
{
reinterpret_cast<ImageStore*>(opaque)->buffer_free2(data);
}
void
ImageStore::buffer_free2(uint8_t* data)
{
boost::mutex::scoped_lock lm(_mutex);
auto iter = _images.find(data);
if (iter != _images.end()) {
iter->second.second--;
if (iter->second.second == 0) {
_images.erase(data);
}
}
}
AVBufferRef*
ImageStore::create_buffer(shared_ptr<const Image> image, int component)
{
boost::mutex::scoped_lock lm(_mutex);
auto key = image->data()[component];
auto iter = _images.find(key);
if (iter != _images.end()) {
iter->second.second++;
} else {
_images[key] = { image, 1 };
}
return av_buffer_create(image->data()[component], image->stride()[component] * image->size().height, &buffer_free, this, 0);
}
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