A previous commit took care to make Decoder::position() not be updated
[dcpomatic.git] / src / lib / player.cc
index a1adee0b0d08727c7362fdf8218a96e9821f8256..9e0561a7051dbc2fb8be976a118b93eddbc49b76 100644 (file)
@@ -109,7 +109,7 @@ Player::setup_pieces ()
                        continue;
                }
 
-               shared_ptr<Decoder> decoder = decoder_factory (i, _film->log());
+               shared_ptr<Decoder> decoder = decoder_factory (i, _film->log(), _fast);
                FrameRateChange frc (i->active_video_frame_rate(), _film->video_frame_rate());
 
                if (!decoder) {
@@ -127,7 +127,10 @@ Player::setup_pieces ()
 
                shared_ptr<DCPDecoder> dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
                if (dcp && _play_referenced) {
-                       dcp->set_decode_referenced ();
+                       if (_play_referenced) {
+                               dcp->set_decode_referenced ();
+                       }
+                       dcp->set_forced_reduction (_dcp_decode_reduction);
                }
 
                shared_ptr<Piece> piece (new Piece (i, decoder, frc));
@@ -148,6 +151,7 @@ Player::setup_pieces ()
                }
        }
 
+       _stream_states.clear ();
        BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
                if (i->content->audio) {
                        BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams()) {
@@ -156,8 +160,8 @@ Player::setup_pieces ()
                }
        }
 
-       _black = Empty (_film, bind(&Content::video, _1));
-       _silent = Empty (_film, bind(&Content::audio, _1));
+       _black = Empty (_film->content(), _film->length(), bind(&Content::video, _1));
+       _silent = Empty (_film->content(), _film->length(), bind(&Content::audio, _1));
 
        _last_video_time = DCPTime ();
        _last_audio_time = DCPTime ();
@@ -342,8 +346,8 @@ DCPTime
 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
 {
        /* See comment in dcp_to_content_video */
-       DCPTime const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime (piece->content->trim_start (), piece->frc);
-       return max (DCPTime (), d + piece->content->position ());
+       DCPTime const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime(piece->content->trim_start(), piece->frc);
+       return d + piece->content->position();
 }
 
 Frame
@@ -422,6 +426,7 @@ Player::set_always_burn_subtitles (bool burn)
        _always_burn_subtitles = burn;
 }
 
+/** Sets up the player to be faster, possibly at the expense of quality */
 void
 Player::set_fast ()
 {
@@ -449,7 +454,7 @@ Player::get_reel_assets ()
 
                scoped_ptr<DCPDecoder> decoder;
                try {
-                       decoder.reset (new DCPDecoder (j, _film->log()));
+                       decoder.reset (new DCPDecoder (j, _film->log(), false));
                } catch (...) {
                        return a;
                }
@@ -591,14 +596,15 @@ Player::pass ()
        list<pair<shared_ptr<AudioBuffers>, DCPTime> > audio = _audio_merger.pull (pull_to);
        for (list<pair<shared_ptr<AudioBuffers>, DCPTime> >::iterator i = audio.begin(); i != audio.end(); ++i) {
                if (_last_audio_time && i->second < *_last_audio_time) {
-                       /* There has been an accurate seek and we have received some audio before the seek time;
-                          discard it.
-                       */
+                       /* This new data comes before the last we emitted (or the last seek); discard it */
                        pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time);
                        if (!cut.first) {
                                continue;
                        }
                        *i = cut;
+               } else if (_last_audio_time && i->second > *_last_audio_time) {
+                       /* There's a gap between this data and the last we emitted; fill with silence */
+                       fill_audio (DCPTimePeriod (*_last_audio_time, i->second));
                }
 
                emit_audio (i->first, i->second);
@@ -645,9 +651,8 @@ Player::video (weak_ptr<Piece> wp, ContentVideo video)
                return;
        }
 
-       /* Time and period of the frame we will emit */
+       /* Time of the first frame we will emit */
        DCPTime const time = content_video_to_dcp (piece, video.frame);
-       DCPTimePeriod const period (time, time + one_video_frame());
 
        /* Discard if it's outside the content's period or if it's before the last accurate seek */
        if (
@@ -687,7 +692,11 @@ Player::video (weak_ptr<Piece> wp, ContentVideo video)
                        )
                );
 
-       emit_video (_last_video[wp], time);
+       DCPTime t = time;
+       for (int i = 0; i < frc.repeat; ++i) {
+               emit_video (_last_video[wp], t);
+               t += one_video_frame ();
+       }
 }
 
 void
@@ -847,6 +856,10 @@ Player::subtitle_stop (weak_ptr<Piece> wp, ContentTime to)
 void
 Player::seek (DCPTime time, bool accurate)
 {
+       if (!_have_valid_pieces) {
+               setup_pieces ();
+       }
+
        if (_audio_processor) {
                _audio_processor->flush ();
        }
@@ -947,3 +960,15 @@ Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTi
        cut->copy_from (audio.get(), remaining_frames, discard_frames, 0);
        return make_pair(cut, time + discard_time);
 }
+
+void
+Player::set_dcp_decode_reduction (optional<int> reduction)
+{
+       if (reduction == _dcp_decode_reduction) {
+               return;
+       }
+
+       _dcp_decode_reduction = reduction;
+       _have_valid_pieces = false;
+       Changed (false);
+}