Reword again: Text -> Caption and Plain -> Text.
[dcpomatic.git] / src / lib / player.cc
index 00abc7190a823cd8ef080beb0b350f4f89dd25ca..a7cd0fd94ce93bf402b2ac152d4f9842c09f694e 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2013-2017 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2018 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -28,7 +28,7 @@
 #include "raw_image_proxy.h"
 #include "ratio.h"
 #include "log.h"
-#include "render_subtitles.h"
+#include "render_text.h"
 #include "config.h"
 #include "content_video.h"
 #include "player_video.h"
 #include "decoder.h"
 #include "video_decoder.h"
 #include "audio_decoder.h"
-#include "subtitle_content.h"
-#include "subtitle_decoder.h"
+#include "text_content.h"
+#include "text_decoder.h"
 #include "ffmpeg_content.h"
 #include "audio_content.h"
-#include "content_subtitle.h"
 #include "dcp_decoder.h"
 #include "image_decoder.h"
-#include "resampler.h"
 #include "compose.hpp"
+#include "shuffler.h"
 #include <dcp/reel.h>
 #include <dcp/reel_sound_asset.h>
 #include <dcp/reel_subtitle_asset.h>
@@ -78,16 +77,23 @@ using boost::dynamic_pointer_cast;
 using boost::optional;
 using boost::scoped_ptr;
 
+int const PlayerProperty::VIDEO_CONTAINER_SIZE = 700;
+int const PlayerProperty::PLAYLIST = 701;
+int const PlayerProperty::FILM_CONTAINER = 702;
+int const PlayerProperty::FILM_VIDEO_FRAME_RATE = 703;
+int const PlayerProperty::DCP_DECODE_REDUCTION = 704;
+
 Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist)
        : _film (film)
        , _playlist (playlist)
        , _have_valid_pieces (false)
        , _ignore_video (false)
-       , _ignore_audio (false)
+       , _ignore_subtitle (false)
        , _always_burn_subtitles (false)
        , _fast (false)
        , _play_referenced (false)
        , _audio_merger (_film->audio_frame_rate())
+       , _shuffler (0)
 {
        _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1));
        _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
@@ -99,18 +105,27 @@ Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist
        seek (DCPTime (), true);
 }
 
+Player::~Player ()
+{
+       delete _shuffler;
+}
+
 void
 Player::setup_pieces ()
 {
        _pieces.clear ();
 
+       delete _shuffler;
+       _shuffler = new Shuffler();
+       _shuffler->Video.connect(bind(&Player::video, this, _1, _2));
+
        BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
 
                if (!i->paths_valid ()) {
                        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) {
@@ -119,23 +134,31 @@ Player::setup_pieces ()
                }
 
                if (decoder->video && _ignore_video) {
-                       decoder->video->set_ignore ();
+                       decoder->video->set_ignore (true);
                }
 
-               if (decoder->audio && _ignore_audio) {
-                       decoder->audio->set_ignore ();
+               if (decoder->subtitle && _ignore_subtitle) {
+                       decoder->subtitle->set_ignore (true);
                }
 
                shared_ptr<DCPDecoder> dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
-               if (dcp && _play_referenced) {
-                       dcp->set_decode_referenced ();
+               if (dcp) {
+                       dcp->set_decode_referenced (_play_referenced);
+                       if (_play_referenced) {
+                               dcp->set_forced_reduction (_dcp_decode_reduction);
+                       }
                }
 
                shared_ptr<Piece> piece (new Piece (i, decoder, frc));
                _pieces.push_back (piece);
 
                if (decoder->video) {
-                       decoder->video->Data.connect (bind (&Player::video, this, weak_ptr<Piece> (piece), _1));
+                       if (i->video->frame_type() == VIDEO_FRAME_TYPE_3D_LEFT || i->video->frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) {
+                               /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */
+                               decoder->video->Data.connect (bind (&Shuffler::video, _shuffler, weak_ptr<Piece>(piece), _1));
+                       } else {
+                               decoder->video->Data.connect (bind (&Player::video, this, weak_ptr<Piece>(piece), _1));
+                       }
                }
 
                if (decoder->audio) {
@@ -143,12 +166,13 @@ Player::setup_pieces ()
                }
 
                if (decoder->subtitle) {
-                       decoder->subtitle->ImageStart.connect (bind (&Player::image_subtitle_start, this, weak_ptr<Piece> (piece), _1));
-                       decoder->subtitle->TextStart.connect (bind (&Player::text_subtitle_start, this, weak_ptr<Piece> (piece), _1));
-                       decoder->subtitle->Stop.connect (bind (&Player::subtitle_stop, this, weak_ptr<Piece> (piece), _1));
+                       decoder->subtitle->BitmapStart.connect (bind (&Player::bitmap_text_start, this, weak_ptr<Piece> (piece), _1));
+                       decoder->subtitle->PlainStart.connect (bind (&Player::plain_text_start, this, weak_ptr<Piece> (piece), _1));
+                       decoder->subtitle->Stop.connect (bind (&Player::subtitle_stop, this, weak_ptr<Piece> (piece), _1, _2));
                }
        }
 
+       _stream_states.clear ();
        BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
                if (i->content->audio) {
                        BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams()) {
@@ -157,21 +181,11 @@ Player::setup_pieces ()
                }
        }
 
-       if (!_play_referenced) {
-               BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
-                       shared_ptr<DCPContent> dc = dynamic_pointer_cast<DCPContent> (i->content);
-                       if (dc) {
-                               if (dc->reference_video()) {
-                                       _no_video.push_back (DCPTimePeriod (dc->position(), dc->end()));
-                               }
-                               if (dc->reference_audio()) {
-                                       _no_audio.push_back (DCPTimePeriod (dc->position(), dc->end()));
-                               }
-                       }
-               }
-       }
+       _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_video_eyes = EYES_BOTH;
        _last_audio_time = DCPTime ();
        _have_valid_pieces = true;
 }
@@ -191,38 +205,39 @@ Player::playlist_content_changed (weak_ptr<Content> w, int property, bool freque
                property == ContentProperty::TRIM_END ||
                property == ContentProperty::PATH ||
                property == VideoContentProperty::FRAME_TYPE ||
+               property == VideoContentProperty::COLOUR_CONVERSION ||
+               property == AudioContentProperty::STREAMS ||
                property == DCPContentProperty::NEEDS_ASSETS ||
                property == DCPContentProperty::NEEDS_KDM ||
-               property == SubtitleContentProperty::COLOUR ||
-               property == SubtitleContentProperty::OUTLINE ||
-               property == SubtitleContentProperty::SHADOW ||
-               property == SubtitleContentProperty::EFFECT_COLOUR ||
+               property == TextContentProperty::COLOUR ||
+               property == TextContentProperty::EFFECT ||
+               property == TextContentProperty::EFFECT_COLOUR ||
                property == FFmpegContentProperty::SUBTITLE_STREAM ||
-               property == VideoContentProperty::COLOUR_CONVERSION
+               property == FFmpegContentProperty::FILTERS
                ) {
 
                _have_valid_pieces = false;
-               Changed (frequent);
+               Changed (property, frequent);
 
        } else if (
-               property == SubtitleContentProperty::LINE_SPACING ||
-               property == SubtitleContentProperty::OUTLINE_WIDTH ||
-               property == SubtitleContentProperty::Y_SCALE ||
-               property == SubtitleContentProperty::FADE_IN ||
-               property == SubtitleContentProperty::FADE_OUT ||
+               property == TextContentProperty::LINE_SPACING ||
+               property == TextContentProperty::OUTLINE_WIDTH ||
+               property == TextContentProperty::Y_SCALE ||
+               property == TextContentProperty::FADE_IN ||
+               property == TextContentProperty::FADE_OUT ||
                property == ContentProperty::VIDEO_FRAME_RATE ||
-               property == SubtitleContentProperty::USE ||
-               property == SubtitleContentProperty::X_OFFSET ||
-               property == SubtitleContentProperty::Y_OFFSET ||
-               property == SubtitleContentProperty::X_SCALE ||
-               property == SubtitleContentProperty::FONTS ||
+               property == TextContentProperty::USE ||
+               property == TextContentProperty::X_OFFSET ||
+               property == TextContentProperty::Y_OFFSET ||
+               property == TextContentProperty::X_SCALE ||
+               property == TextContentProperty::FONTS ||
                property == VideoContentProperty::CROP ||
                property == VideoContentProperty::SCALE ||
                property == VideoContentProperty::FADE_IN ||
                property == VideoContentProperty::FADE_OUT
                ) {
 
-               Changed (frequent);
+               Changed (property, frequent);
        }
 }
 
@@ -238,14 +253,14 @@ Player::set_video_container_size (dcp::Size s)
        _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true));
        _black_image->make_black ();
 
-       Changed (false);
+       Changed (PlayerProperty::VIDEO_CONTAINER_SIZE, false);
 }
 
 void
 Player::playlist_changed ()
 {
        _have_valid_pieces = false;
-       Changed (false);
+       Changed (PlayerProperty::PLAYLIST, false);
 }
 
 void
@@ -257,26 +272,28 @@ Player::film_changed (Film::Property p)
        */
 
        if (p == Film::CONTAINER) {
-               Changed (false);
+               Changed (PlayerProperty::FILM_CONTAINER, false);
        } else if (p == Film::VIDEO_FRAME_RATE) {
                /* Pieces contain a FrameRateChange which contains the DCP frame rate,
                   so we need new pieces here.
                */
                _have_valid_pieces = false;
-               Changed (false);
+               Changed (PlayerProperty::FILM_VIDEO_FRAME_RATE, false);
        } else if (p == Film::AUDIO_PROCESSOR) {
                if (_film->audio_processor ()) {
                        _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
                }
+       } else if (p == Film::AUDIO_CHANNELS) {
+               _audio_merger.clear ();
        }
 }
 
 list<PositionImage>
-Player::transform_image_subtitles (list<ImageSubtitle> subs) const
+Player::transform_bitmap_texts (list<BitmapText> subs) const
 {
        list<PositionImage> all;
 
-       for (list<ImageSubtitle>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
+       for (list<BitmapText>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
                if (!i->image) {
                        continue;
                }
@@ -284,18 +301,6 @@ Player::transform_image_subtitles (list<ImageSubtitle> subs) const
                /* We will scale the subtitle up to fit _video_container_size */
                dcp::Size scaled_size (i->rectangle.width * _video_container_size.width, i->rectangle.height * _video_container_size.height);
 
-               /* Then we need a corrective translation, consisting of two parts:
-                *
-                * 1.  that which is the result of the scaling of the subtitle by _video_container_size; this will be
-                *     rect.x * _video_container_size.width and rect.y * _video_container_size.height.
-                *
-                * 2.  that to shift the origin of the scale by subtitle_scale to the centre of the subtitle; this will be
-                *     (width_before_subtitle_scale * (1 - subtitle_x_scale) / 2) and
-                *     (height_before_subtitle_scale * (1 - subtitle_y_scale) / 2).
-                *
-                * Combining these two translations gives these expressions.
-                */
-
                all.push_back (
                        PositionImage (
                                i->image->scale (
@@ -317,7 +322,7 @@ Player::transform_image_subtitles (list<ImageSubtitle> subs) const
 }
 
 shared_ptr<PlayerVideo>
-Player::black_player_video_frame () const
+Player::black_player_video_frame (Eyes eyes) const
 {
        return shared_ptr<PlayerVideo> (
                new PlayerVideo (
@@ -326,9 +331,11 @@ Player::black_player_video_frame () const
                        optional<double> (),
                        _video_container_size,
                        _video_container_size,
-                       EYES_BOTH,
+                       eyes,
                        PART_WHOLE,
-                       PresetColourConversion::all().front().conversion
+                       PresetColourConversion::all().front().conversion,
+                       boost::weak_ptr<Content>(),
+                       boost::optional<Frame>()
                )
        );
 }
@@ -354,8 +361,8 @@ 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
@@ -371,8 +378,9 @@ DCPTime
 Player::resampled_audio_to_dcp (shared_ptr<const Piece> piece, Frame f) const
 {
        /* See comment in dcp_to_content_video */
-       DCPTime const d = DCPTime::from_frames (f, _film->audio_frame_rate()) - DCPTime (piece->content->trim_start(), piece->frc);
-       return max (DCPTime (), d + piece->content->position ());
+       return DCPTime::from_frames (f, _film->audio_frame_rate())
+               - DCPTime (piece->content->trim_start(), piece->frc)
+               + piece->content->position();
 }
 
 ContentTime
@@ -417,6 +425,12 @@ Player::set_ignore_video ()
        _ignore_video = true;
 }
 
+void
+Player::set_ignore_subtitle ()
+{
+       _ignore_subtitle = true;
+}
+
 /** Set whether or not this player should always burn text subtitles into the image,
  *  regardless of the content settings.
  *  @param burn true to always burn subtitles, false to obey content settings.
@@ -427,6 +441,7 @@ 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 ()
 {
@@ -454,7 +469,7 @@ 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;
                }
@@ -514,106 +529,131 @@ Player::pass ()
                setup_pieces ();
        }
 
-       shared_ptr<Piece> earliest;
-       DCPTime earliest_content;
+       if (_playlist->length() == DCPTime()) {
+               /* Special case of an empty Film; just give one black frame */
+               emit_video (black_player_video_frame(EYES_BOTH), DCPTime());
+               return true;
+       }
+
+       /* Find the decoder or empty which is farthest behind where we are and make it emit some data */
+
+       shared_ptr<Piece> earliest_content;
+       optional<DCPTime> earliest_time;
 
        BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
-               if (!i->done) {
-                       DCPTime const t = i->content->position() + DCPTime (i->decoder->position(), i->frc);
-                       if (!earliest || t < earliest_content) {
-                               earliest_content = t;
-                               earliest = i;
-                       }
+               if (i->done) {
+                       continue;
                }
-       }
 
-       if (earliest) {
-               earliest->done = earliest->decoder->pass ();
-               if (earliest->done && earliest->content->audio) {
-                       /* Flush the Player audio system for this piece */
-                       BOOST_FOREACH (AudioStreamPtr i, earliest->content->audio->streams()) {
-                               audio_flush (earliest, i);
+               DCPTime const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start()));
+               if (t > i->content->end()) {
+                       i->done = true;
+               } else {
+
+                       /* Given two choices at the same time, pick the one with a subtitle so we see it before
+                          the video.
+                       */
+                       if (!earliest_time || t < *earliest_time || (t == *earliest_time && i->decoder->subtitle)) {
+                               earliest_time = t;
+                               earliest_content = i;
                        }
                }
        }
 
-       /* Fill towards the next thing that might happen (or the end of the playlist).  This is to fill gaps between content,
-          NOT to fill gaps within content (the latter is done in ::video())
-       */
-       DCPTime fill_towards = earliest ? earliest_content : _playlist->length();
+       bool done = false;
 
-       /* Work out where to fill video from */
-       optional<DCPTime> video_fill_from;
-       if (_last_video_time) {
-               /* Fill from the last video or seek time */
-               video_fill_from = _last_video_time;
+       enum {
+               NONE,
+               CONTENT,
+               BLACK,
+               SILENT
+       } which = NONE;
+
+       if (earliest_content) {
+               which = CONTENT;
        }
 
-       bool filled = false;
-       /* Fill some black if we would emit before the earliest piece of content.  This is so we act like a phantom
-          Piece which emits black in spaces (we only emit if we are the earliest thing)
-       */
-       if (video_fill_from && (!earliest || *video_fill_from < earliest_content) && ((fill_towards - *video_fill_from)) >= one_video_frame()) {
-               list<DCPTimePeriod> p = subtract(DCPTimePeriod(*video_fill_from, *video_fill_from + one_video_frame()), _no_video);
-               if (!p.empty ()) {
-                       emit_video (black_player_video_frame(), p.front().from);
-                       filled = true;
-               }
-       } else if (_playlist->length() == DCPTime()) {
-               /* Special case of an empty Film; just give one black frame */
-               emit_video (black_player_video_frame(), DCPTime());
-               filled = true;
+       if (!_black.done() && (!earliest_time || _black.position() < *earliest_time)) {
+               earliest_time = _black.position ();
+               which = BLACK;
        }
 
-       optional<DCPTime> audio_fill_from;
-       if (_last_audio_time) {
-               /* Fill from the last audio or seek time */
-               audio_fill_from = _last_audio_time;
+       if (!_silent.done() && (!earliest_time || _silent.position() < *earliest_time)) {
+               earliest_time = _silent.position ();
+               which = SILENT;
        }
 
-       /* XXX: _no_audio */
-       if (audio_fill_from && audio_fill_from < fill_towards) {
-               DCPTimePeriod period (*audio_fill_from, fill_towards);
+       switch (which) {
+       case CONTENT:
+               earliest_content->done = earliest_content->decoder->pass ();
+               break;
+       case BLACK:
+               emit_video (black_player_video_frame(EYES_BOTH), _black.position());
+               _black.set_position (_black.position() + one_video_frame());
+               break;
+       case SILENT:
+       {
+               DCPTimePeriod period (_silent.period_at_position());
+               if (_last_audio_time) {
+                       /* Sometimes the thing that happened last finishes fractionally before
+                          this silence.  Bodge the start time of the silence to fix it.  I'm
+                          not sure if this is the right solution --- maybe the last thing should
+                          be padded `forward' rather than this thing padding `back'.
+                       */
+                       period.from = min(period.from, *_last_audio_time);
+               }
                if (period.duration() > one_video_frame()) {
                        period.to = period.from + one_video_frame();
                }
-               list<DCPTimePeriod> p = subtract(period, _no_video);
-               if (!p.empty ()) {
-                       fill_audio (period);
-               }
-               filled = true;
+               fill_audio (period);
+               _silent.set_position (period.to);
+               break;
+       }
+       case NONE:
+               done = true;
+               break;
        }
 
        /* Emit any audio that is ready */
 
-       DCPTime pull_to = _playlist->length ();
+       /* Work out the time before which the audio is definitely all here.  This is the earliest last_push_end of one
+          of our streams, or the position of the _silent.
+       */
+       DCPTime pull_to = _film->length ();
        for (map<AudioStreamPtr, StreamState>::const_iterator i = _stream_states.begin(); i != _stream_states.end(); ++i) {
                if (!i->second.piece->done && i->second.last_push_end < pull_to) {
                        pull_to = i->second.last_push_end;
                }
        }
+       if (!_silent.done() && _silent.position() < pull_to) {
+               pull_to = _silent.position();
+       }
 
        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;
-               }
-
-               if (_last_audio_time) {
+               } 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);
        }
 
-       return !earliest && !filled;
+       if (done) {
+               _shuffler->flush ();
+               for (list<pair<shared_ptr<PlayerVideo>, DCPTime> >::const_iterator i = _delay.begin(); i != _delay.end(); ++i) {
+                       do_emit_video(i->first, i->second);
+               }
+       }
+
+       return done;
 }
 
 optional<PositionImage>
@@ -621,15 +661,17 @@ Player::subtitles_for_frame (DCPTime time) const
 {
        list<PositionImage> subtitles;
 
-       BOOST_FOREACH (PlayerSubtitles i, _active_subtitles.get_burnt (time, _always_burn_subtitles)) {
+       int const vfr = _film->video_frame_rate();
+
+       BOOST_FOREACH (PlayerCaption i, _active_text[TEXT_SUBTITLE].get_burnt (DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_subtitles)) {
 
                /* Image subtitles */
-               list<PositionImage> c = transform_image_subtitles (i.image);
+               list<PositionImage> c = transform_bitmap_texts (i.image);
                copy (c.begin(), c.end(), back_inserter (subtitles));
 
                /* Text subtitles (rendered to an image) */
                if (!i.text.empty ()) {
-                       list<PositionImage> s = render_subtitles (i.text, i.fonts, _video_container_size, time);
+                       list<PositionImage> s = render_text (i.text, i.fonts, _video_container_size, time, vfr);
                        copy (s.begin(), s.end(), back_inserter (subtitles));
                }
        }
@@ -654,34 +696,50 @@ 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 (
-               time < piece->content->position() ||
-               time >= piece->content->end() ||
-               (_last_video_time && time < *_last_video_time)) {
+       /* Discard if it's before the content's period or the last accurate seek.  We can't discard
+          if it's after the content's period here as in that case we still need to fill any gap between
+          `now' and the end of the content's period.
+       */
+       if (time < piece->content->position() || (_last_video_time && time < *_last_video_time)) {
                return;
        }
 
-       /* Fill gaps that we discover now that we have some video which needs to be emitted */
+       /* Fill gaps that we discover now that we have some video which needs to be emitted.
+          This is where we need to fill to.
+       */
+       DCPTime fill_to = min (time, piece->content->end());
 
-       optional<DCPTime> fill_to;
        if (_last_video_time) {
-               fill_to = _last_video_time;
-       }
-
-       if (fill_to) {
-               /* XXX: this may not work for 3D */
-               BOOST_FOREACH (DCPTimePeriod i, subtract(DCPTimePeriod (*fill_to, time), _no_video)) {
-                       for (DCPTime j = i.from; j < i.to; j += one_video_frame()) {
-                               LastVideoMap::const_iterator k = _last_video.find (wp);
-                               if (k != _last_video.end ()) {
-                                       emit_video (k->second, j);
+               DCPTime fill_from = max (*_last_video_time, piece->content->position());
+               LastVideoMap::const_iterator last = _last_video.find (wp);
+               if (_film->three_d()) {
+                       DCPTime j = fill_from;
+                       Eyes eyes = _last_video_eyes.get_value_or(EYES_LEFT);
+                       if (eyes == EYES_BOTH) {
+                               eyes = EYES_LEFT;
+                       }
+                       while (j < fill_to || eyes != video.eyes) {
+                               if (last != _last_video.end()) {
+                                       shared_ptr<PlayerVideo> copy = last->second->shallow_copy();
+                                       copy->set_eyes (eyes);
+                                       emit_video (copy, j);
                                } else {
-                                       emit_video (black_player_video_frame(), j);
+                                       emit_video (black_player_video_frame(eyes), j);
+                               }
+                               if (eyes == EYES_RIGHT) {
+                                       j += one_video_frame();
+                               }
+                               eyes = increment_eyes (eyes);
+                       }
+               } else {
+                       for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) {
+                               if (last != _last_video.end()) {
+                                       emit_video (last->second, j);
+                               } else {
+                                       emit_video (black_player_video_frame(EYES_BOTH), j);
                                }
                        }
                }
@@ -698,91 +756,19 @@ Player::video (weak_ptr<Piece> wp, ContentVideo video)
                        _video_container_size,
                        video.eyes,
                        video.part,
-                       piece->content->video->colour_conversion ()
+                       piece->content->video->colour_conversion(),
+                       piece->content,
+                       video.frame
                        )
                );
 
-       emit_video (_last_video[wp], time);
-}
-
-void
-Player::audio_flush (shared_ptr<Piece> piece, AudioStreamPtr stream)
-{
-       shared_ptr<AudioContent> content = piece->content->audio;
-       DCPOMATIC_ASSERT (content);
-
-       shared_ptr<Resampler> r = resampler (content, stream, false);
-       if (!r) {
-               return;
-       }
-
-       pair<shared_ptr<const AudioBuffers>, Frame> ro = r->flush ();
-       if (ro.first->frames() == 0) {
-               return;
-       }
-
-       ContentAudio content_audio;
-       content_audio.audio = ro.first;
-       content_audio.frame = ro.second;
-
-       /* Compute time in the DCP */
-       DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame) + DCPTime::from_seconds (content->delay() / 1000.0);
-
-       audio_transform (content, stream, content_audio, time);
-}
-
-/** Do our common processing on some audio */
-void
-Player::audio_transform (shared_ptr<AudioContent> content, AudioStreamPtr stream, ContentAudio content_audio, DCPTime time)
-{
-       DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
-
-       /* Gain */
-
-       if (content->gain() != 0) {
-               shared_ptr<AudioBuffers> gain (new AudioBuffers (content_audio.audio));
-               gain->apply_gain (content->gain ());
-               content_audio.audio = gain;
-       }
-
-       /* Remap */
-
-       shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), content_audio.audio->frames()));
-       dcp_mapped->make_silent ();
-
-       AudioMapping map = stream->mapping ();
-       for (int i = 0; i < map.input_channels(); ++i) {
-               for (int j = 0; j < dcp_mapped->channels(); ++j) {
-                       if (map.get (i, static_cast<dcp::Channel> (j)) > 0) {
-                               dcp_mapped->accumulate_channel (
-                                       content_audio.audio.get(),
-                                       i,
-                                       static_cast<dcp::Channel> (j),
-                                       map.get (i, static_cast<dcp::Channel> (j))
-                                       );
-                       }
+       DCPTime t = time;
+       for (int i = 0; i < frc.repeat; ++i) {
+               if (t < piece->content->end()) {
+                       emit_video (_last_video[wp], t);
                }
+               t += one_video_frame ();
        }
-
-       content_audio.audio = dcp_mapped;
-
-       /* Process */
-
-       if (_audio_processor) {
-               content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
-       }
-
-       /* Pad any gap which may be caused by audio delay */
-
-       if (_last_audio_time) {
-               fill_audio (DCPTimePeriod (*_last_audio_time, time));
-       }
-
-       /* Push */
-
-       _audio_merger.push (content_audio.audio, time);
-       DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
-       _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
 }
 
 void
@@ -798,19 +784,8 @@ Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_a
        shared_ptr<AudioContent> content = piece->content->audio;
        DCPOMATIC_ASSERT (content);
 
-       /* Resample */
-       if (stream->frame_rate() != content->resampled_frame_rate()) {
-               shared_ptr<Resampler> r = resampler (content, stream, true);
-               pair<shared_ptr<const AudioBuffers>, Frame> ro = r->run (content_audio.audio, content_audio.frame);
-               if (ro.first->frames() == 0) {
-                       return;
-               }
-               content_audio.audio = ro.first;
-               content_audio.frame = ro.second;
-       }
-
        /* Compute time in the DCP */
-       DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame) + DCPTime::from_seconds (content->delay() / 1000.0);
+       DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame);
        /* And the end of this block in the DCP */
        DCPTime end = time + DCPTime::from_frames(content_audio.audio->frames(), content->resampled_frame_rate());
 
@@ -836,11 +811,35 @@ Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_a
                content_audio.audio = cut;
        }
 
-       audio_transform (content, stream, content_audio, time);
+       DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
+
+       /* Gain */
+
+       if (content->gain() != 0) {
+               shared_ptr<AudioBuffers> gain (new AudioBuffers (content_audio.audio));
+               gain->apply_gain (content->gain ());
+               content_audio.audio = gain;
+       }
+
+       /* Remap */
+
+       content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping());
+
+       /* Process */
+
+       if (_audio_processor) {
+               content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ());
+       }
+
+       /* Push */
+
+       _audio_merger.push (content_audio.audio, time);
+       DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ());
+       _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate());
 }
 
 void
-Player::image_subtitle_start (weak_ptr<Piece> wp, ContentImageSubtitle subtitle)
+Player::bitmap_text_start (weak_ptr<Piece> wp, ContentBitmapCaption subtitle)
 {
        shared_ptr<Piece> piece = wp.lock ();
        if (!piece) {
@@ -851,32 +850,36 @@ Player::image_subtitle_start (weak_ptr<Piece> wp, ContentImageSubtitle subtitle)
        subtitle.sub.rectangle.x += piece->content->subtitle->x_offset ();
        subtitle.sub.rectangle.y += piece->content->subtitle->y_offset ();
 
+       /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */
+       subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * ((piece->content->subtitle->x_scale() - 1) / 2);
+       subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * ((piece->content->subtitle->y_scale() - 1) / 2);
+
        /* Apply content's subtitle scale */
        subtitle.sub.rectangle.width *= piece->content->subtitle->x_scale ();
        subtitle.sub.rectangle.height *= piece->content->subtitle->y_scale ();
 
-       /* Apply a corrective translation to keep the subtitle centred after that scale */
-       subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * (piece->content->subtitle->x_scale() - 1);
-       subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * (piece->content->subtitle->y_scale() - 1);
-
-       PlayerSubtitles ps;
+       PlayerCaption ps;
        ps.image.push_back (subtitle.sub);
        DCPTime from (content_time_to_dcp (piece, subtitle.from()));
 
-       _active_subtitles.add_from (wp, ps, from);
+       _active_text[subtitle.type()].add_from (wp, ps, from);
 }
 
 void
-Player::text_subtitle_start (weak_ptr<Piece> wp, ContentTextSubtitle subtitle)
+Player::plain_text_start (weak_ptr<Piece> wp, ContentTextCaption subtitle)
 {
        shared_ptr<Piece> piece = wp.lock ();
        if (!piece) {
                return;
        }
 
-       PlayerSubtitles ps;
+       PlayerCaption ps;
        DCPTime const from (content_time_to_dcp (piece, subtitle.from()));
 
+       if (from > piece->content->end()) {
+               return;
+       }
+
        BOOST_FOREACH (dcp::SubtitleString s, subtitle.subs) {
                s.set_h_position (s.h_position() + piece->content->subtitle->x_offset ());
                s.set_v_position (s.v_position() + piece->content->subtitle->y_offset ());
@@ -898,17 +901,17 @@ Player::text_subtitle_start (weak_ptr<Piece> wp, ContentTextSubtitle subtitle)
                }
 
                s.set_in (dcp::Time(from.seconds(), 1000));
-               ps.text.push_back (SubtitleString (s, piece->content->subtitle->outline_width()));
+               ps.text.push_back (TextCaption (s, piece->content->subtitle->outline_width()));
                ps.add_fonts (piece->content->subtitle->fonts ());
        }
 
-       _active_subtitles.add_from (wp, ps, from);
+       _active_text[subtitle.type()].add_from (wp, ps, from);
 }
 
 void
-Player::subtitle_stop (weak_ptr<Piece> wp, ContentTime to)
+Player::subtitle_stop (weak_ptr<Piece> wp, ContentTime to, TextType type)
 {
-       if (!_active_subtitles.have (wp)) {
+       if (!_active_text[type].have (wp)) {
                return;
        }
 
@@ -919,32 +922,43 @@ Player::subtitle_stop (weak_ptr<Piece> wp, ContentTime to)
 
        DCPTime const dcp_to = content_time_to_dcp (piece, to);
 
-       pair<PlayerSubtitles, DCPTime> from = _active_subtitles.add_to (wp, dcp_to);
+       if (dcp_to > piece->content->end()) {
+               return;
+       }
+
+       pair<PlayerCaption, DCPTime> from = _active_text[type].add_to (wp, dcp_to);
 
        if (piece->content->subtitle->use() && !_always_burn_subtitles && !piece->content->subtitle->burn()) {
-               Subtitle (from.first, DCPTimePeriod (from.second, dcp_to));
+               Text (from.first, type, DCPTimePeriod (from.second, dcp_to));
        }
 }
 
 void
 Player::seek (DCPTime time, bool accurate)
 {
-       if (_audio_processor) {
-               _audio_processor->flush ();
+       if (!_have_valid_pieces) {
+               setup_pieces ();
        }
 
-       for (ResamplerMap::iterator i = _resamplers.begin(); i != _resamplers.end(); ++i) {
-               i->second->flush ();
-               i->second->reset ();
+       if (_shuffler) {
+               _shuffler->clear ();
+       }
+
+       _delay.clear ();
+
+       if (_audio_processor) {
+               _audio_processor->flush ();
        }
 
        _audio_merger.clear ();
-       _active_subtitles.clear ();
+       for (int i = 0; i < TEXT_COUNT; ++i) {
+               _active_text[i].clear ();
+       }
 
        BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
                if (time < i->content->position()) {
-                       /* Before; seek to 0 */
-                       i->decoder->seek (ContentTime(), accurate);
+                       /* Before; seek to the start of the content */
+                       i->decoder->seek (dcp_to_content_time (i, i->content->position()), accurate);
                        i->done = false;
                } else if (i->content->position() <= time && time < i->content->end()) {
                        /* During; seek to position */
@@ -958,78 +972,92 @@ Player::seek (DCPTime time, bool accurate)
 
        if (accurate) {
                _last_video_time = time;
+               _last_video_eyes = EYES_LEFT;
                _last_audio_time = time;
        } else {
                _last_video_time = optional<DCPTime>();
+               _last_video_eyes = optional<Eyes>();
                _last_audio_time = optional<DCPTime>();
        }
+
+       _black.set_position (time);
+       _silent.set_position (time);
+
+       _last_video.clear ();
 }
 
-shared_ptr<Resampler>
-Player::resampler (shared_ptr<const AudioContent> content, AudioStreamPtr stream, bool create)
+void
+Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
 {
-       ResamplerMap::const_iterator i = _resamplers.find (make_pair (content, stream));
-       if (i != _resamplers.end ()) {
-               return i->second;
-       }
+       /* We need a delay to give a little wiggle room to ensure that relevent subtitles arrive at the
+          player before the video that requires them.
+       */
+       _delay.push_back (make_pair (pv, time));
 
-       if (!create) {
-               return shared_ptr<Resampler> ();
+       if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
+               _last_video_time = time + one_video_frame();
        }
+       _last_video_eyes = increment_eyes (pv->eyes());
 
-       LOG_GENERAL (
-               "Creating new resampler from %1 to %2 with %3 channels",
-               stream->frame_rate(),
-               content->resampled_frame_rate(),
-               stream->channels()
-               );
-
-       shared_ptr<Resampler> r (
-               new Resampler (stream->frame_rate(), content->resampled_frame_rate(), stream->channels())
-               );
+       if (_delay.size() < 3) {
+               return;
+       }
 
-       _resamplers[make_pair(content, stream)] = r;
-       return r;
+       pair<shared_ptr<PlayerVideo>, DCPTime> to_do = _delay.front();
+       _delay.pop_front();
+       do_emit_video (to_do.first, to_do.second);
 }
 
 void
-Player::emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
+Player::do_emit_video (shared_ptr<PlayerVideo> pv, DCPTime time)
 {
+       if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
+               for (int i = 0; i < TEXT_COUNT; ++i) {
+                       _active_text[i].clear_before (time);
+               }
+       }
+
        optional<PositionImage> subtitles = subtitles_for_frame (time);
        if (subtitles) {
                pv->set_subtitle (subtitles.get ());
        }
 
        Video (pv, time);
-
-       if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) {
-               _last_video_time = time + one_video_frame();
-               _active_subtitles.clear_before (time);
-       }
 }
 
 void
 Player::emit_audio (shared_ptr<AudioBuffers> data, DCPTime time)
 {
+       /* Log if the assert below is about to fail */
+       if (_last_audio_time && time != *_last_audio_time) {
+               _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_last_audio_time)), LogEntry::TYPE_WARNING);
+       }
+
+       /* This audio must follow on from the previous */
+       DCPOMATIC_ASSERT (!_last_audio_time || time == *_last_audio_time);
        Audio (data, time);
-       _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate ());
+       _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate());
 }
 
 void
 Player::fill_audio (DCPTimePeriod period)
 {
-       BOOST_FOREACH (DCPTimePeriod i, subtract(period, _no_audio)) {
-               DCPTime t = i.from;
-               while (t < i.to) {
-                       DCPTime block = min (DCPTime::from_seconds (0.5), i.to - t);
-                       Frame const samples = block.frames_round(_film->audio_frame_rate());
-                       if (samples) {
-                               shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
-                               silence->make_silent ();
-                               emit_audio (silence, t);
-                       }
-                       t += block;
+       if (period.from == period.to) {
+               return;
+       }
+
+       DCPOMATIC_ASSERT (period.from < period.to);
+
+       DCPTime t = period.from;
+       while (t < period.to) {
+               DCPTime block = min (DCPTime::from_seconds (0.5), period.to - t);
+               Frame const samples = block.frames_round(_film->audio_frame_rate());
+               if (samples) {
+                       shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
+                       silence->make_silent ();
+                       emit_audio (silence, t);
                }
+               t += block;
        }
 }
 
@@ -1052,3 +1080,32 @@ 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 (PlayerProperty::DCP_DECODE_REDUCTION, false);
+}
+
+DCPTime
+Player::content_time_to_dcp (shared_ptr<Content> content, ContentTime t)
+{
+       if (_have_valid_pieces) {
+               setup_pieces ();
+       }
+
+       BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
+               if (i->content == content) {
+                       return content_time_to_dcp (i, t);
+               }
+       }
+
+       DCPOMATIC_ASSERT (false);
+       return DCPTime ();
+}