Hopefully fix seek back/forward.

[dcpomatic.git] / src / lib / player.h

diff --git a/src/lib/player.h b/src/lib/player.h
index fc08deb9f3573d6c8ac2151460bda8077e52733f..15fa4dbd6ce5c1d118683e26bc5278e96cf31eef 100644 (file)
--- a/src/lib/player.h
+++ b/src/lib/player.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+    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
@@ -17,54 +17,96 @@
 
 */
 
-#ifndef DVDOMATIC_PLAYER_H
-#define DVDOMATIC_PLAYER_H
+#ifndef DCPOMATIC_PLAYER_H
+#define DCPOMATIC_PLAYER_H
 
+#include <list>
 #include <boost/shared_ptr.hpp>
-#include <boost/thread.hpp>
-#include <boost/thread/mutex.hpp>
+#include <boost/enable_shared_from_this.hpp>
+#include "playlist.h"
+#include "audio_buffers.h"
+#include "content.h"
+#include "film.h"
 
-class FilmState;
-class Screen;
+class Job;
+class Film;
+class Playlist;
+class AudioContent;
+class Piece;
+class Image;
+class Resampler;
 
-class Player
+/** @class Player
+ *  @brief A class which can `play' a Playlist; emitting its audio and video.
+ */
+ 
+class Player : public boost::enable_shared_from_this<Player>
 {
 public:
-       enum Split {
-               SPLIT_NONE,
-               SPLIT_LEFT,
-               SPLIT_RIGHT
-       };
-               
-       Player (boost::shared_ptr<const FilmState>, boost::shared_ptr<const Screen>, Split);
-       ~Player ();
-
-       void command (std::string);
-
-       float position () const;
-       bool paused () const;
-       
-       pid_t mplayer_pid () const {
-               return _mplayer_pid;
+       Player (boost::shared_ptr<const Film>, boost::shared_ptr<const Playlist>);
+
+       void disable_video ();
+       void disable_audio ();
+
+       bool pass ();
+       void seek (Time, bool);
+
+       Time video_position () const {
+               return _video_position;
        }
 
+       void set_video_container_size (libdcp::Size);
+
+       /** Emitted when a video frame is ready.
+        *  First parameter is the video image.
+        *  Second parameter is true if the image is the same as the last one that was emitted.
+        *  Third parameter is the time.
+        */
+       boost::signals2::signal<void (boost::shared_ptr<const Image>, bool, Time)> Video;
+       
+       /** Emitted when some audio data is ready */
+       boost::signals2::signal<void (boost::shared_ptr<const AudioBuffers>, Time)> Audio;
+
+       /** Emitted when something has changed such that if we went back and emitted
+        *  the last frame again it would look different.  This is not emitted after
+        *  a seek.
+        */
+       boost::signals2::signal<void ()> Changed;
+
 private:
-       void stdout_reader ();
-       void set_position (float);
-       void set_paused (bool);
+
+       void process_video (boost::weak_ptr<Piece>, boost::shared_ptr<const Image>, bool, VideoContent::Frame);
+       void process_audio (boost::weak_ptr<Piece>, boost::shared_ptr<const AudioBuffers>, AudioContent::Frame);
+       void setup_pieces ();
+       void playlist_changed ();
+       void content_changed (boost::weak_ptr<Content>, int);
+       void do_seek (Time, bool);
+       void flush ();
+       void emit_black ();
+       void emit_silence (OutputAudioFrame);
+       boost::shared_ptr<Resampler> resampler (boost::shared_ptr<AudioContent>);
+       void film_changed (Film::Property);
+
+       boost::shared_ptr<const Film> _film;
+       boost::shared_ptr<const Playlist> _playlist;
        
-       int _mplayer_stdin[2];
-       int _mplayer_stdout[2];
-       int _mplayer_stderr[2];
-       pid_t _mplayer_pid;
-
-       boost::thread* _stdout_reader;
-       /* XXX: should probably be atomically accessed */
-       bool _stdout_reader_should_run;
-
-       mutable boost::mutex _state_mutex;
-       float _position;
-       bool _paused;
+       bool _video;
+       bool _audio;
+
+       /** Our pieces are ready to go; if this is false the pieces must be (re-)created before they are used */
+       bool _have_valid_pieces;
+       std::list<boost::shared_ptr<Piece> > _pieces;
+
+       /** The time after the last video that we emitted */
+       Time _video_position;
+       /** The time after the last audio that we emitted */
+       Time _audio_position;
+
+       AudioBuffers _audio_buffers;
+
+       libdcp::Size _video_container_size;
+       boost::shared_ptr<Image> _black_frame;
+       std::map<boost::shared_ptr<AudioContent>, boost::shared_ptr<Resampler> > _resamplers;
 };
 
 #endif