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/*
Copyright (C) 2012-2021 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/>.
*/
#ifndef DCPOMATIC_J2K_ENCODER_H
#define DCPOMATIC_J2K_ENCODER_H
/** @file src/j2k_encoder.h
* @brief J2KEncoder class.
*/
#include "cross.h"
#include "enum_indexed_vector.h"
#include "event_history.h"
#include "exception_store.h"
#include "j2k_encoder_thread.h"
#include "writer.h"
#include "video_encoder.h"
#include <boost/optional.hpp>
#include <boost/signals2.hpp>
#include <boost/thread.hpp>
#include <boost/thread/condition.hpp>
#include <boost/thread/mutex.hpp>
#include <list>
#include <stdint.h>
class DCPVideo;
class EncodeServerDescription;
class Film;
class Job;
class PlayerVideo;
namespace grk_plugin {
struct DcpomaticContext;
struct GrokContext;
}
struct local_threads_created_and_destroyed;
struct remote_threads_created_and_destroyed;
struct frames_not_lost_when_threads_disappear;
/** @class J2KEncoder
* @brief Class to manage encoding to J2K.
*
* This class keeps a queue of frames to be encoded and distributes
* the work around threads and encoding servers.
*/
class J2KEncoder : public VideoEncoder, public ExceptionStore
{
public:
J2KEncoder(std::shared_ptr<const Film> film, Writer& writer);
~J2KEncoder ();
J2KEncoder (J2KEncoder const&) = delete;
J2KEncoder& operator= (J2KEncoder const&) = delete;
/** Called to indicate that a processing run is about to begin */
void begin() override;
/** Called to pass a bit of video to be encoded as the next DCP frame */
void encode (std::shared_ptr<PlayerVideo> pv, dcpomatic::DCPTime time) override;
void pause() override;
void resume() override;
/** Called when a processing run has finished */
void end() override;
DCPVideo pop();
void retry(DCPVideo frame);
void write(std::shared_ptr<const dcp::Data> data, int index, Eyes eyes);
private:
friend struct ::local_threads_created_and_destroyed;
friend struct ::remote_threads_created_and_destroyed;
friend struct ::frames_not_lost_when_threads_disappear;
void frame_done ();
void servers_list_changed ();
void remake_threads(int cpu, int gpu, std::list<EncodeServerDescription> servers);
void terminate_threads ();
boost::mutex _threads_mutex;
std::vector<std::shared_ptr<J2KEncoderThread>> _threads;
mutable boost::mutex _queue_mutex;
std::list<DCPVideo> _queue;
/** condition to manage thread wakeups when we have nothing to do */
boost::condition _empty_condition;
/** condition to manage thread wakeups when we have too much to do */
boost::condition _full_condition;
Waker _waker;
EnumIndexedVector<std::shared_ptr<PlayerVideo>, Eyes> _last_player_video;
boost::signals2::scoped_connection _server_found_connection;
#ifdef DCPOMATIC_GROK
grk_plugin::DcpomaticContext* _dcpomatic_context = nullptr;
grk_plugin::GrokContext *_context = nullptr;
#endif
bool _ending = false;
};
#endif
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