Initial work on removing storage of subtitle times.

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

diff --git a/src/lib/player.h b/src/lib/player.h
index c0e0f9f70f3aa0daa996e4224354f3d06b45b018..eb6589b564cce151cee832f0b2db929cc61411d3 100644 (file)
--- a/src/lib/player.h
+++ b/src/lib/player.h
@@ -29,6 +29,8 @@
 #include "content_video.h"
 #include "content_audio.h"
 #include "content_subtitle.h"
+#include "audio_stream.h"
+#include "audio_merger.h"
 #include <boost/shared_ptr.hpp>
 #include <boost/enable_shared_from_this.hpp>
 #include <list>
@@ -42,6 +44,7 @@ class Playlist;
 class Font;
 class AudioBuffers;
 class ReferencedReelAsset;
+class Resampler;
 
 /** @class Player
  *  @brief A class which can `play' a Playlist.
@@ -73,9 +76,12 @@ public:
         */
        boost::signals2::signal<void (bool)> Changed;
 
-       boost::signals2::signal<void (boost::shared_ptr<PlayerVideo>)> Video;
+       boost::signals2::signal<void (boost::shared_ptr<PlayerVideo>, DCPTime)> Video;
        boost::signals2::signal<void (boost::shared_ptr<AudioBuffers>, DCPTime)> Audio;
-       boost::signals2::signal<void (PlayerSubtitles)> Subtitle;
+       /** Emitted when a subtitle is ready.  This signal may be emitted considerably
+        *  after the corresponding Video.
+        */
+       boost::signals2::signal<void (PlayerSubtitles, DCPTimePeriod)> Subtitle;
 
 private:
        friend class PlayerWrapper;
@@ -91,18 +97,28 @@ private:
        void playlist_changed ();
        void playlist_content_changed (boost::weak_ptr<Content>, int, bool);
        std::list<PositionImage> transform_image_subtitles (std::list<ImageSubtitle>) const;
-       void update_subtitle_from_text ();
        Frame dcp_to_content_video (boost::shared_ptr<const Piece> piece, DCPTime t) const;
        DCPTime content_video_to_dcp (boost::shared_ptr<const Piece> piece, Frame f) const;
        Frame dcp_to_resampled_audio (boost::shared_ptr<const Piece> piece, DCPTime t) const;
-       ContentTime dcp_to_content_subtitle (boost::shared_ptr<const Piece> piece, DCPTime t) const;
-       DCPTime content_subtitle_to_dcp (boost::shared_ptr<const Piece> piece, ContentTime t) const;
-       boost::shared_ptr<PlayerVideo> black_player_video_frame (DCPTime) const;
+       DCPTime resampled_audio_to_dcp (boost::shared_ptr<const Piece> piece, Frame f) const;
+       ContentTime dcp_to_content_time (boost::shared_ptr<const Piece> piece, DCPTime t) const;
+       DCPTime content_time_to_dcp (boost::shared_ptr<const Piece> piece, ContentTime t) const;
+       boost::shared_ptr<PlayerVideo> black_player_video_frame () const;
        std::list<boost::shared_ptr<Piece> > overlaps (DCPTime from, DCPTime to, boost::function<bool (Content *)> valid);
        void video (boost::weak_ptr<Piece>, ContentVideo);
-       void audio (boost::weak_ptr<Piece>, ContentAudio);
-       void image_subtitle (boost::weak_ptr<Piece>, ContentImageSubtitle);
-       void text_subtitle (boost::weak_ptr<Piece>, ContentTextSubtitle);
+       void audio (boost::weak_ptr<Piece>, AudioStreamPtr, ContentAudio);
+       void image_subtitle_start (boost::weak_ptr<Piece>, ContentImageSubtitle);
+       void text_subtitle_start (boost::weak_ptr<Piece>, ContentTextSubtitle);
+       void subtitle_stop (boost::weak_ptr<Piece>, ContentTime);
+       boost::shared_ptr<Resampler> resampler (boost::shared_ptr<const AudioContent> content, AudioStreamPtr stream, bool create);
+       DCPTime one_video_frame () const;
+       void fill_video (DCPTimePeriod period);
+       void fill_audio (DCPTimePeriod period);
+       void audio_flush (boost::shared_ptr<Piece>, AudioStreamPtr stream);
+       void audio_transform (boost::shared_ptr<AudioContent> content, AudioStreamPtr stream, ContentAudio content_audio, DCPTime time);
+       std::pair<boost::shared_ptr<AudioBuffers>, DCPTime> discard_audio (
+               boost::shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to
+               ) const;
 
        boost::shared_ptr<const Film> _film;
        boost::shared_ptr<const Playlist> _playlist;
@@ -128,9 +144,38 @@ private:
        /** true if we should `play' (i.e output) referenced DCP data (e.g. for preview) */
        bool _play_referenced;
 
-       DCPTime _last_video;
+       /** Last PlayerVideo that was emitted */
+       boost::shared_ptr<PlayerVideo> _last_video;
+       /** Time just after the last video frame we emitted, or the last seek time */
+       boost::optional<DCPTime> _last_video_time;
+       /** Time just after the last audio frame we emitted, or the last seek time */
+       boost::optional<DCPTime> _last_audio_time;
+
+       AudioMerger _audio_merger;
+
+       class StreamState {
+       public:
+               StreamState () {}
+
+               StreamState (boost::shared_ptr<Piece> p, DCPTime l)
+                       : piece(p)
+                       , last_push_end(l)
+               {}
+
+               boost::shared_ptr<Piece> piece;
+               DCPTime last_push_end;
+       };
+       std::map<AudioStreamPtr, StreamState> _stream_states;
+
+       std::list<DCPTimePeriod> _no_video;
+       std::list<DCPTimePeriod> _no_audio;
+
+       typedef std::map<boost::weak_ptr<Piece>, std::pair<PlayerSubtitles, DCPTime> > ActiveSubtitles;
+       ActiveSubtitles _active_subtitles;
 
        boost::shared_ptr<AudioProcessor> _audio_processor;
+       typedef std::map<std::pair<boost::shared_ptr<const AudioContent>, AudioStreamPtr>, boost::shared_ptr<Resampler> > ResamplerMap;
+       ResamplerMap _resamplers;
 
        boost::signals2::scoped_connection _film_changed_connection;
        boost::signals2::scoped_connection _playlist_changed_connection;