Suspend scale / crop / window / subtitle overlay until we decide that a frame is...

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

diff --git a/src/lib/player.h b/src/lib/player.h
index 32ef25d47142a1e1489f7e49250164b08f2babdb..11cc99e7793005630a5e9ce1014e5827bdf55ed4 100644 (file)
--- a/src/lib/player.h
+++ b/src/lib/player.h
@@ -24,9 +24,11 @@
 #include <boost/shared_ptr.hpp>
 #include <boost/enable_shared_from_this.hpp>
 #include "playlist.h"
-#include "audio_buffers.h"
 #include "content.h"
 #include "film.h"
+#include "rect.h"
+#include "audio_merger.h"
+#include "audio_content.h"
 
 class Job;
 class Film;
@@ -35,13 +37,45 @@ class AudioContent;
 class Piece;
 class Image;
 class Resampler;
-class TimedSubtitle;
 
 /** @class Player
  *  @brief A class which can `play' a Playlist; emitting its audio and video.
  */
+
+struct IncomingVideo
+{
+public:
+       boost::weak_ptr<Piece> weak_piece;
+       boost::shared_ptr<const Image> image;
+       Eyes eyes;
+       bool same;
+       VideoContent::Frame frame;
+       Time extra;
+};
+
+/** A wrapper for an Image which contains some pending operations; these may
+ *  not be necessary if the receiver of the PlayerImage throws it away.
+ */
+class PlayerImage
+{
+public:
+       PlayerImage (boost::shared_ptr<const Image>, Crop, libdcp::Size, libdcp::Size, Scaler const *);
+
+       void set_subtitle (boost::shared_ptr<const Image>, Position<int>);
+       
+       boost::shared_ptr<Image> image ();
+
+private:
+       boost::shared_ptr<const Image> _in;
+       Crop _crop;
+       libdcp::Size _inter_size;
+       libdcp::Size _out_size;
+       Scaler const * _scaler;
+       boost::shared_ptr<const Image> _subtitle_image;
+       Position<int> _subtitle_position;
+};
  
-class Player : public boost::enable_shared_from_this<Player>
+class Player : public boost::enable_shared_from_this<Player>, public boost::noncopyable
 {
 public:
        Player (boost::shared_ptr<const Film>, boost::shared_ptr<const Playlist>);
@@ -58,12 +92,16 @@ public:
 
        void set_video_container_size (libdcp::Size);
 
+       bool repeat_last_video ();
+
        /** 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.
+        *  Second parameter is the eye(s) that should see this image.
+        *  Third parameter is the colour conversion that should be used for this image.
+        *  Fourth parameter is true if the image is the same as the last one that was emitted.
+        *  Fifth parameter is the time.
         */
-       boost::signals2::signal<void (boost::shared_ptr<const Image>, bool, Time)> Video;
+       boost::signals2::signal<void (boost::shared_ptr<PlayerImage>, Eyes, ColourConversion, bool, Time)> Video;
        
        /** Emitted when some audio data is ready */
        boost::signals2::signal<void (boost::shared_ptr<const AudioBuffers>, Time)> Audio;
@@ -71,23 +109,28 @@ public:
        /** 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.
+        *
+        *  The parameter is true if these signals are currently likely to be frequent.
         */
-       boost::signals2::signal<void ()> Changed;
+       boost::signals2::signal<void (bool)> Changed;
 
 private:
+       friend class PlayerWrapper;
+       friend class Piece;
 
-       void process_video (boost::weak_ptr<Piece>, boost::shared_ptr<const Image>, bool, VideoContent::Frame);
+       void process_video (boost::weak_ptr<Piece>, boost::shared_ptr<const Image>, Eyes, bool, VideoContent::Frame, Time);
        void process_audio (boost::weak_ptr<Piece>, boost::shared_ptr<const AudioBuffers>, AudioContent::Frame);
-       void process_subtitle (boost::weak_ptr<Piece>, boost::shared_ptr<TimedSubtitle>);
+       void process_subtitle (boost::weak_ptr<Piece>, boost::shared_ptr<Image>, dcpomatic::Rect<double>, Time, Time);
        void setup_pieces ();
        void playlist_changed ();
-       void content_changed (boost::weak_ptr<Content>, int);
+       void content_changed (boost::weak_ptr<Content>, int, bool);
        void do_seek (Time, bool);
        void flush ();
        void emit_black ();
        void emit_silence (OutputAudioFrame);
-       boost::shared_ptr<Resampler> resampler (boost::shared_ptr<AudioContent>);
+       boost::shared_ptr<Resampler> resampler (boost::shared_ptr<AudioContent>, bool);
        void film_changed (Film::Property);
+       void update_subtitle ();
 
        boost::shared_ptr<const Film> _film;
        boost::shared_ptr<const Playlist> _playlist;
@@ -104,16 +147,38 @@ private:
        /** The time after the last audio that we emitted */
        Time _audio_position;
 
-       AudioBuffers _audio_buffers;
+       AudioMerger<Time, AudioContent::Frame> _audio_merger;
 
        libdcp::Size _video_container_size;
-       boost::shared_ptr<Image> _black_frame;
+       boost::shared_ptr<PlayerImage> _black_frame;
        std::map<boost::shared_ptr<AudioContent>, boost::shared_ptr<Resampler> > _resamplers;
 
-       boost::shared_ptr<TimedSubtitle> _subtitle;
-       Time _subtitle_content_time;
-       int _subtitle_offset;
-       float _subtitle_scale;
+       struct {
+               boost::weak_ptr<Piece> piece;
+               boost::shared_ptr<Image> image;
+               dcpomatic::Rect<double> rect;
+               Time from;
+               Time to;
+       } _in_subtitle;
+
+       struct {
+               boost::shared_ptr<Image> image;
+               Position<int> position;
+               Time from;
+               Time to;
+       } _out_subtitle;
+
+#ifdef DCPOMATIC_DEBUG
+       boost::shared_ptr<Content> _last_video;
+#endif
+
+       bool _last_emit_was_black;
+
+       IncomingVideo _last_incoming_video;
+
+       boost::signals2::scoped_connection _playlist_changed_connection;
+       boost::signals2::scoped_connection _playlist_content_changed_connection;
+       boost::signals2::scoped_connection _film_changed_connection;
 };
 
 #endif