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/*
Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of libdcp.
libdcp 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.
libdcp 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 libdcp. If not, see <http://www.gnu.org/licenses/>.
In addition, as a special exception, the copyright holders give
permission to link the code of portions of this program with the
OpenSSL library under certain conditions as described in each
individual source file, and distribute linked combinations
including the two.
You must obey the GNU General Public License in all respects
for all of the code used other than OpenSSL. If you modify
file(s) with this exception, you may extend this exception to your
version of the file(s), but you are not obligated to do so. If you
do not wish to do so, delete this exception statement from your
version. If you delete this exception statement from all source
files in the program, then also delete it here.
*/
/** @file src/stereo_picture_asset_writer.h
* @brief StereoPictureAssetWriter class
*/
#include "picture_asset_writer.h"
#include "types.h"
#include <memory>
#include <stdint.h>
#include <string>
namespace dcp {
/** @class StereoPictureAssetWriter
* @brief A helper class for writing to StereoPictureAssets.
*
* Objects of this class can only be created with StereoPictureAsset::start_write().
*
* Frames can be written to the StereoPictureAsset by calling write() with a JPEG2000 image
* (a verbatim .j2c file). finalize() should be called after the last frame has been written,
* but if it is not, it will be called by the destructor (though in that case any error
* during finalization will be ignored).
*/
class StereoPictureAssetWriter : public PictureAssetWriter
{
public:
~StereoPictureAssetWriter();
/** Write a frame for one eye. Frames must be written left, then right, then left etc.
* @param data JPEG2000 data.
* @param size Size of data.
*/
FrameInfo write (uint8_t const * data, int size) override;
void fake_write (int size) override;
bool finalize () override;
private:
friend class StereoPictureAsset;
StereoPictureAssetWriter (PictureAsset *, boost::filesystem::path file, bool);
void start (uint8_t const *, int);
/* do this with an opaque pointer so we don't have to include
ASDCP headers
*/
struct ASDCPState;
std::shared_ptr<ASDCPState> _state;
dcp::Eye _next_eye = Eye::LEFT;
};
}
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