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/*
Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef DCPOMATIC_PLAYER_H
#define DCPOMATIC_PLAYER_H
#include <list>
#include <boost/shared_ptr.hpp>
#include <boost/enable_shared_from_this.hpp>
#include "video_source.h"
#include "audio_source.h"
#include "video_sink.h"
#include "audio_sink.h"
#include "playlist.h"
#include "audio_buffers.h"
class Job;
class Film;
class Playlist;
class AudioContent;
class Decoder;
/** @class Player
* @brief A class which can `play' a Playlist; emitting its audio and video.
*/
class Player : public VideoSource, public AudioSource, public boost::enable_shared_from_this<Player>
{
public:
Player (boost::shared_ptr<const Film>, boost::shared_ptr<const Playlist>);
void disable_video ();
void disable_audio ();
void disable_subtitles ();
bool pass ();
bool seek (Time);
void seek_back ();
void seek_forward ();
Time last_video () const {
return _last_video;
}
private:
struct RegionDecoder
{
RegionDecoder ()
: last (0)
{}
Playlist::Region region;
boost::shared_ptr<Decoder> decoder;
Time last;
};
void process_video (boost::shared_ptr<RegionDecoder>, boost::shared_ptr<const Image>, bool, boost::shared_ptr<Subtitle>, Time);
void process_audio (boost::shared_ptr<RegionDecoder>, boost::shared_ptr<const AudioBuffers>, Time);
void setup_decoders ();
void playlist_changed ();
void content_changed (boost::weak_ptr<Content>, int);
void emit_black_frame ();
void emit_silence (Time);
boost::shared_ptr<const Film> _film;
boost::shared_ptr<const Playlist> _playlist;
bool _video;
bool _audio;
bool _subtitles;
/** Our decoders are ready to go; if this is false the decoders must be (re-)created before they are used */
bool _have_valid_decoders;
std::list<boost::shared_ptr<RegionDecoder> > _decoders;
Time _position;
AudioBuffers _audio_buffers;
Time _last_video;
bool _last_was_black;
Time _last_audio;
};
#endif
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