Logging improvements to allow prettier displays in the server GUI.
[dcpomatic.git] / src / lib / player.cc
index 495d20533b3eb15947f8a199b34901700d07b5f3..0606a9340c9d1d6e51cd3f4e0d2ac906a090edf5 100644 (file)
@@ -30,7 +30,6 @@
 #include "subrip_decoder.h"
 #include "subrip_content.h"
 #include "dcp_content.h"
-#include "playlist.h"
 #include "job.h"
 #include "image.h"
 #include "raw_image_proxy.h"
 #include "dcp_decoder.h"
 #include "dcp_subtitle_content.h"
 #include "dcp_subtitle_decoder.h"
+#include "audio_processor.h"
+#include "playlist.h"
+#include <dcp/reel.h>
+#include <dcp/reel_sound_asset.h>
+#include <dcp/reel_subtitle_asset.h>
+#include <dcp/reel_picture_asset.h>
 #include <boost/foreach.hpp>
 #include <stdint.h>
 #include <algorithm>
+#include <iostream>
 
 #include "i18n.h"
 
-#define LOG_GENERAL(...) _film->log()->log (String::compose (__VA_ARGS__), Log::TYPE_GENERAL);
+#define LOG_GENERAL(...) _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_GENERAL);
 
 using std::list;
 using std::cout;
@@ -62,22 +68,28 @@ using std::vector;
 using std::pair;
 using std::map;
 using std::make_pair;
+using std::copy;
 using boost::shared_ptr;
 using boost::weak_ptr;
 using boost::dynamic_pointer_cast;
 using boost::optional;
 
-Player::Player (shared_ptr<const Film> f, shared_ptr<const Playlist> p)
-       : _film (f)
-       , _playlist (p)
+Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist)
+       : _film (film)
+       , _playlist (playlist)
        , _have_valid_pieces (false)
-       , _approximate_size (false)
        , _ignore_video (false)
+       , _ignore_audio (false)
+       , _always_burn_subtitles (false)
+       , _fast (false)
+       , _play_referenced (false)
 {
-       _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
-       _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::content_changed, this, _1, _2, _3));
        _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1));
+       _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
+       _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::playlist_content_changed, this, _1, _2, _3));
        set_video_container_size (_film->frame_size ());
+
+       film_changed (Film::AUDIO_PROCESSOR);
 }
 
 void
@@ -86,56 +98,30 @@ Player::setup_pieces ()
        list<shared_ptr<Piece> > old_pieces = _pieces;
        _pieces.clear ();
 
-       ContentList content = _playlist->content ();
+       BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
 
-       for (ContentList::iterator i = content.begin(); i != content.end(); ++i) {
-
-               if (!(*i)->paths_valid ()) {
+               if (!i->paths_valid ()) {
                        continue;
                }
-               
+
                shared_ptr<Decoder> decoder;
                optional<FrameRateChange> frc;
 
-               /* Work out a FrameRateChange for the best overlap video for this content, in case we need it below */
-               DCPTime best_overlap_t;
-               shared_ptr<VideoContent> best_overlap;
-               for (ContentList::iterator j = content.begin(); j != content.end(); ++j) {
-                       shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (*j);
-                       if (!vc) {
-                               continue;
-                       }
-                       
-                       DCPTime const overlap = max (vc->position(), (*i)->position()) - min (vc->end(), (*i)->end());
-                       if (overlap > best_overlap_t) {
-                               best_overlap = vc;
-                               best_overlap_t = overlap;
-                       }
-               }
-
-               optional<FrameRateChange> best_overlap_frc;
-               if (best_overlap) {
-                       best_overlap_frc = FrameRateChange (best_overlap->video_frame_rate(), _film->video_frame_rate ());
-               } else {
-                       /* No video overlap; e.g. if the DCP is just audio */
-                       best_overlap_frc = FrameRateChange (_film->video_frame_rate(), _film->video_frame_rate ());
-               }
-
                /* FFmpeg */
-               shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (*i);
+               shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (i);
                if (fc) {
-                       decoder.reset (new FFmpegDecoder (fc, _film->log()));
+                       decoder.reset (new FFmpegDecoder (fc, _film->log(), _fast));
                        frc = FrameRateChange (fc->video_frame_rate(), _film->video_frame_rate());
                }
 
-               shared_ptr<const DCPContent> dc = dynamic_pointer_cast<const DCPContent> (*i);
+               shared_ptr<const DCPContent> dc = dynamic_pointer_cast<const DCPContent> (i);
                if (dc) {
-                       decoder.reset (new DCPDecoder (dc));
+                       decoder.reset (new DCPDecoder (dc, _fast));
                        frc = FrameRateChange (dc->video_frame_rate(), _film->video_frame_rate());
                }
 
                /* ImageContent */
-               shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (*i);
+               shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (i);
                if (ic) {
                        /* See if we can re-use an old ImageDecoder */
                        for (list<shared_ptr<Piece> >::const_iterator j = old_pieces.begin(); j != old_pieces.end(); ++j) {
@@ -153,24 +139,51 @@ Player::setup_pieces ()
                }
 
                /* SndfileContent */
-               shared_ptr<const SndfileContent> sc = dynamic_pointer_cast<const SndfileContent> (*i);
+               shared_ptr<const SndfileContent> sc = dynamic_pointer_cast<const SndfileContent> (i);
                if (sc) {
-                       decoder.reset (new SndfileDecoder (sc));
-                       frc = best_overlap_frc;
+                       decoder.reset (new SndfileDecoder (sc, _fast));
+
+                       /* Work out a FrameRateChange for the best overlap video for this content */
+                       DCPTime best_overlap_t;
+                       shared_ptr<VideoContent> best_overlap;
+                       BOOST_FOREACH (shared_ptr<Content> j, _playlist->content ()) {
+                               shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (j);
+                               if (!vc) {
+                                       continue;
+                               }
+
+                               DCPTime const overlap = min (vc->end(), i->end()) - max (vc->position(), i->position());
+                               if (overlap > best_overlap_t) {
+                                       best_overlap = vc;
+                                       best_overlap_t = overlap;
+                               }
+                       }
+
+                       if (best_overlap) {
+                               frc = FrameRateChange (best_overlap->video_frame_rate(), _film->video_frame_rate ());
+                       } else {
+                               /* No video overlap; e.g. if the DCP is just audio */
+                               frc = FrameRateChange (_film->video_frame_rate(), _film->video_frame_rate ());
+                       }
                }
 
+               /* It's questionable whether subtitle content should have a video frame rate; perhaps
+                  it should be assumed that any subtitle content has been prepared at the same rate
+                  as simultaneous video content (like we do with audio).
+               */
+
                /* SubRipContent */
-               shared_ptr<const SubRipContent> rc = dynamic_pointer_cast<const SubRipContent> (*i);
+               shared_ptr<const SubRipContent> rc = dynamic_pointer_cast<const SubRipContent> (i);
                if (rc) {
                        decoder.reset (new SubRipDecoder (rc));
-                       frc = best_overlap_frc;
+                       frc = FrameRateChange (rc->subtitle_video_frame_rate(), _film->video_frame_rate());
                }
 
                /* DCPSubtitleContent */
-               shared_ptr<const DCPSubtitleContent> dsc = dynamic_pointer_cast<const DCPSubtitleContent> (*i);
+               shared_ptr<const DCPSubtitleContent> dsc = dynamic_pointer_cast<const DCPSubtitleContent> (i);
                if (dsc) {
                        decoder.reset (new DCPSubtitleDecoder (dsc));
-                       frc = best_overlap_frc;
+                       frc = FrameRateChange (dsc->subtitle_video_frame_rate(), _film->video_frame_rate());
                }
 
                shared_ptr<VideoDecoder> vd = dynamic_pointer_cast<VideoDecoder> (decoder);
@@ -178,14 +191,19 @@ Player::setup_pieces ()
                        vd->set_ignore_video ();
                }
 
-               _pieces.push_back (shared_ptr<Piece> (new Piece (*i, decoder, frc.get ())));
+               shared_ptr<AudioDecoder> ad = dynamic_pointer_cast<AudioDecoder> (decoder);
+               if (ad && _ignore_audio) {
+                       ad->set_ignore_audio ();
+               }
+
+               _pieces.push_back (shared_ptr<Piece> (new Piece (i, decoder, frc.get ())));
        }
 
        _have_valid_pieces = true;
 }
 
 void
-Player::content_changed (weak_ptr<Content> w, int property, bool frequent)
+Player::playlist_content_changed (weak_ptr<Content> w, int property, bool frequent)
 {
        shared_ptr<Content> c = w.lock ();
        if (!c) {
@@ -201,7 +219,7 @@ Player::content_changed (weak_ptr<Content> w, int property, bool frequent)
                property == VideoContentProperty::VIDEO_FRAME_TYPE ||
                property == DCPContentProperty::CAN_BE_PLAYED
                ) {
-               
+
                _have_valid_pieces = false;
                Changed (frequent);
 
@@ -211,24 +229,19 @@ Player::content_changed (weak_ptr<Content> w, int property, bool frequent)
                property == SubtitleContentProperty::SUBTITLE_Y_OFFSET ||
                property == SubtitleContentProperty::SUBTITLE_X_SCALE ||
                property == SubtitleContentProperty::SUBTITLE_Y_SCALE ||
+               property == SubtitleContentProperty::FONTS ||
                property == VideoContentProperty::VIDEO_CROP ||
                property == VideoContentProperty::VIDEO_SCALE ||
                property == VideoContentProperty::VIDEO_FRAME_RATE ||
                property == VideoContentProperty::VIDEO_FADE_IN ||
-               property == VideoContentProperty::VIDEO_FADE_OUT
+               property == VideoContentProperty::VIDEO_FADE_OUT ||
+               property == VideoContentProperty::COLOUR_CONVERSION
                ) {
-               
+
                Changed (frequent);
        }
 }
 
-void
-Player::playlist_changed ()
-{
-       _have_valid_pieces = false;
-       Changed (false);
-}
-
 void
 Player::set_video_container_size (dcp::Size s)
 {
@@ -238,6 +251,13 @@ Player::set_video_container_size (dcp::Size s)
        _black_image->make_black ();
 }
 
+void
+Player::playlist_changed ()
+{
+       _have_valid_pieces = false;
+       Changed (false);
+}
+
 void
 Player::film_changed (Film::Property p)
 {
@@ -246,8 +266,18 @@ Player::film_changed (Film::Property p)
           last time we were run.
        */
 
-       if (p == Film::CONTAINER || p == Film::VIDEO_FRAME_RATE) {
+       if (p == Film::CONTAINER) {
+               Changed (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);
+       } else if (p == Film::AUDIO_PROCESSOR) {
+               if (_film->audio_processor ()) {
+                       _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ());
+               }
        }
 }
 
@@ -255,7 +285,7 @@ list<PositionImage>
 Player::transform_image_subtitles (list<ImageSubtitle> subs) const
 {
        list<PositionImage> all;
-       
+
        for (list<ImageSubtitle>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
                if (!i->image) {
                        continue;
@@ -263,7 +293,7 @@ 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
@@ -285,8 +315,8 @@ Player::transform_image_subtitles (list<ImageSubtitle> subs) const
                                        true
                                        ),
                                Position<int> (
-                                       rint (_video_container_size.width * i->rectangle.x),
-                                       rint (_video_container_size.height * i->rectangle.y)
+                                       lrint (_video_container_size.width * i->rectangle.x),
+                                       lrint (_video_container_size.height * i->rectangle.y)
                                        )
                                )
                        );
@@ -295,12 +325,6 @@ Player::transform_image_subtitles (list<ImageSubtitle> subs) const
        return all;
 }
 
-void
-Player::set_approximate_size ()
-{
-       _approximate_size = true;
-}
-
 shared_ptr<PlayerVideo>
 Player::black_player_video_frame (DCPTime time) const
 {
@@ -309,17 +333,20 @@ Player::black_player_video_frame (DCPTime time) const
                        shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
                        time,
                        Crop (),
-                       optional<float> (),
+                       optional<double> (),
                        _video_container_size,
                        _video_container_size,
                        EYES_BOTH,
                        PART_WHOLE,
-                       Config::instance()->colour_conversions().front().conversion
+                       PresetColourConversion::all().front().conversion
                )
        );
 }
 
-/** @return All PlayerVideos at the given time (there may be two frames for 3D) */
+/** @return All PlayerVideos at the given time.  There may be none if the content
+ *  at `time' is a DCP which we are passing through (i.e. referring to by reference)
+ *  or 2 if we have 3D.
+ */
 list<shared_ptr<PlayerVideo> >
 Player::get_video (DCPTime time, bool accurate)
 {
@@ -327,9 +354,32 @@ Player::get_video (DCPTime time, bool accurate)
                setup_pieces ();
        }
 
+       /* Find subtitles for possible burn-in */
+
+       PlayerSubtitles ps = get_subtitles (time, DCPTime::from_frames (1, _film->video_frame_rate ()), false, true);
+
+       list<PositionImage> sub_images;
+
+       /* Image subtitles */
+       list<PositionImage> c = transform_image_subtitles (ps.image);
+       copy (c.begin(), c.end(), back_inserter (sub_images));
+
+       /* Text subtitles (rendered to an image) */
+       if (!ps.text.empty ()) {
+               list<PositionImage> s = render_subtitles (ps.text, ps.fonts, _video_container_size);
+               copy (s.begin (), s.end (), back_inserter (sub_images));
+       }
+
+       optional<PositionImage> subtitles;
+       if (!sub_images.empty ()) {
+               subtitles = merge (sub_images);
+       }
+
+       /* Find pieces containing video which is happening now */
+
        list<shared_ptr<Piece> > ov = overlaps<VideoContent> (
                time,
-               time + DCPTime::from_frames (1, _film->video_frame_rate ())
+               time + DCPTime::from_frames (1, _film->video_frame_rate ()) - DCPTime::delta()
                );
 
        list<shared_ptr<PlayerVideo> > pvf;
@@ -338,63 +388,73 @@ Player::get_video (DCPTime time, bool accurate)
                /* No video content at this time */
                pvf.push_back (black_player_video_frame (time));
        } else {
-               /* Create a PlayerVideo from the content's video at this time */
+               /* Some video content at this time */
+               shared_ptr<Piece> last = *(ov.rbegin ());
+               VideoFrameType const last_type = dynamic_pointer_cast<VideoContent> (last->content)->video_frame_type ();
 
-               shared_ptr<Piece> piece = ov.back ();
-               shared_ptr<VideoDecoder> decoder = dynamic_pointer_cast<VideoDecoder> (piece->decoder);
-               DCPOMATIC_ASSERT (decoder);
-               shared_ptr<VideoContent> content = dynamic_pointer_cast<VideoContent> (piece->content);
-               DCPOMATIC_ASSERT (content);
+               /* Get video from appropriate piece(s) */
+               BOOST_FOREACH (shared_ptr<Piece> piece, ov) {
 
-               list<ContentVideo> content_video = decoder->get_video (dcp_to_content_video (piece, time), accurate);
-               if (content_video.empty ()) {
-                       pvf.push_back (black_player_video_frame (time));
-                       return pvf;
-               }
-               
-               dcp::Size image_size = content->scale().size (content, _video_container_size, _film->frame_size (), _approximate_size ? 4 : 1);
-
-               for (list<ContentVideo>::const_iterator i = content_video.begin(); i != content_video.end(); ++i) {
-                       pvf.push_back (
-                               shared_ptr<PlayerVideo> (
-                                       new PlayerVideo (
-                                               i->image,
-                                               content_video_to_dcp (piece, i->frame),
-                                               content->crop (),
-                                               content->fade (i->frame),
-                                               image_size,
-                                               _video_container_size,
-                                               i->eyes,
-                                               i->part,
-                                               content->colour_conversion ()
-                                               )
-                                       )
-                               );
-               }
-       }
-
-       /* Add subtitles (for possible burn-in) to whatever PlayerVideos we got */
+                       shared_ptr<VideoDecoder> decoder = dynamic_pointer_cast<VideoDecoder> (piece->decoder);
+                       DCPOMATIC_ASSERT (decoder);
+                       shared_ptr<VideoContent> video_content = dynamic_pointer_cast<VideoContent> (piece->content);
+                       DCPOMATIC_ASSERT (video_content);
 
-       PlayerSubtitles ps = get_subtitles (time, DCPTime::from_frames (1, _film->video_frame_rate ()), false);
-
-       list<PositionImage> sub_images;
+                       shared_ptr<DCPContent> dcp_content = dynamic_pointer_cast<DCPContent> (video_content);
+                       if (dcp_content && dcp_content->reference_video () && !_play_referenced) {
+                               continue;
+                       }
 
-       /* Image subtitles */
-       list<PositionImage> c = transform_image_subtitles (ps.image);
-       copy (c.begin(), c.end(), back_inserter (sub_images));
+                       bool const use =
+                               /* always use the last video */
+                               piece == last ||
+                               /* with a corresponding L/R eye if appropriate */
+                               (last_type == VIDEO_FRAME_TYPE_3D_LEFT && video_content->video_frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) ||
+                               (last_type == VIDEO_FRAME_TYPE_3D_RIGHT && video_content->video_frame_type() == VIDEO_FRAME_TYPE_3D_LEFT);
+
+                       if (use) {
+                               /* We want to use this piece */
+                               list<ContentVideo> content_video = decoder->get_video (dcp_to_content_video (piece, time), accurate);
+                               if (content_video.empty ()) {
+                                       pvf.push_back (black_player_video_frame (time));
+                               } else {
+                                       dcp::Size image_size = video_content->scale().size (video_content, _video_container_size, _film->frame_size ());
+
+                                       for (list<ContentVideo>::const_iterator i = content_video.begin(); i != content_video.end(); ++i) {
+                                               pvf.push_back (
+                                                       shared_ptr<PlayerVideo> (
+                                                               new PlayerVideo (
+                                                                       i->image,
+                                                                       content_video_to_dcp (piece, i->frame),
+                                                                       video_content->crop (),
+                                                                       video_content->fade (i->frame),
+                                                                       image_size,
+                                                                       _video_container_size,
+                                                                       i->eyes,
+                                                                       i->part,
+                                                                       video_content->colour_conversion ()
+                                                                       )
+                                                               )
+                                                       );
+                                       }
+                               }
+                       } else {
+                               /* Discard unused video */
+                               decoder->get_video (dcp_to_content_video (piece, time), accurate);
+                       }
+               }
+       }
 
-       /* Text subtitles (rendered to images) */
-       sub_images.push_back (render_subtitles (ps.text, _video_container_size));
-       
-       if (!sub_images.empty ()) {
-               for (list<shared_ptr<PlayerVideo> >::const_iterator i = pvf.begin(); i != pvf.end(); ++i) {
-                       (*i)->set_subtitle (merge (sub_images));
+       if (subtitles) {
+               BOOST_FOREACH (shared_ptr<PlayerVideo> p, pvf) {
+                       p->set_subtitle (subtitles.get ());
                }
-       }       
-               
+       }
+
        return pvf;
 }
 
+/** @return Audio data or 0 if the only audio data here is referenced DCP data */
 shared_ptr<AudioBuffers>
 Player::get_audio (DCPTime time, DCPTime length, bool accurate)
 {
@@ -402,149 +462,163 @@ Player::get_audio (DCPTime time, DCPTime length, bool accurate)
                setup_pieces ();
        }
 
-       AudioFrame const length_frames = length.frames (_film->audio_frame_rate ());
+       Frame const length_frames = length.frames_round (_film->audio_frame_rate ());
 
        shared_ptr<AudioBuffers> audio (new AudioBuffers (_film->audio_channels(), length_frames));
        audio->make_silent ();
-       
+
        list<shared_ptr<Piece> > ov = overlaps<AudioContent> (time, time + length);
        if (ov.empty ()) {
                return audio;
        }
 
-       for (list<shared_ptr<Piece> >::iterator i = ov.begin(); i != ov.end(); ++i) {
+       bool all_referenced = true;
+       BOOST_FOREACH (shared_ptr<Piece> i, ov) {
+               shared_ptr<AudioContent> audio_content = dynamic_pointer_cast<AudioContent> (i->content);
+               shared_ptr<DCPContent> dcp_content = dynamic_pointer_cast<DCPContent> (i->content);
+               if (audio_content && (!dcp_content || !dcp_content->reference_audio ())) {
+                       /* There is audio content which is not from a DCP or not set to be referenced */
+                       all_referenced = false;
+               }
+       }
+
+       if (all_referenced && !_play_referenced) {
+               return shared_ptr<AudioBuffers> ();
+       }
 
-               shared_ptr<AudioContent> content = dynamic_pointer_cast<AudioContent> ((*i)->content);
+       BOOST_FOREACH (shared_ptr<Piece> i, ov) {
+
+               shared_ptr<AudioContent> content = dynamic_pointer_cast<AudioContent> (i->content);
                DCPOMATIC_ASSERT (content);
-               shared_ptr<AudioDecoder> decoder = dynamic_pointer_cast<AudioDecoder> ((*i)->decoder);
+               shared_ptr<AudioDecoder> decoder = dynamic_pointer_cast<AudioDecoder> (i->decoder);
                DCPOMATIC_ASSERT (decoder);
 
-               if (content->audio_frame_rate() == 0) {
-                       /* This AudioContent has no audio (e.g. if it is an FFmpegContent with no
-                        * audio stream).
-                        */
-                       continue;
-               }
-
                /* The time that we should request from the content */
                DCPTime request = time - DCPTime::from_seconds (content->audio_delay() / 1000.0);
-               AudioFrame request_frames = length_frames;
+               Frame request_frames = length_frames;
                DCPTime offset;
                if (request < DCPTime ()) {
                        /* We went off the start of the content, so we will need to offset
                           the stuff we get back.
                        */
                        offset = -request;
-                       request_frames += request.frames (_film->audio_frame_rate ());
+                       request_frames += request.frames_round (_film->audio_frame_rate ());
                        if (request_frames < 0) {
                                request_frames = 0;
                        }
                        request = DCPTime ();
                }
 
-               AudioFrame const content_frame = dcp_to_content_audio (*i, request);
+               Frame const content_frame = dcp_to_resampled_audio (i, request);
 
-               /* Audio from this piece's decoder (which might be more or less than what we asked for) */
-               shared_ptr<ContentAudio> all = decoder->get_audio (content_frame, request_frames, accurate);
+               BOOST_FOREACH (AudioStreamPtr j, content->audio_streams ()) {
 
-               /* Gain */
-               if (content->audio_gain() != 0) {
-                       shared_ptr<AudioBuffers> gain (new AudioBuffers (all->audio));
-                       gain->apply_gain (content->audio_gain ());
-                       all->audio = gain;
-               }
+                       if (j->channels() == 0) {
+                               /* Some content (e.g. DCPs) can have streams with no channels */
+                               continue;
+                       }
+
+                       /* Audio from this piece's decoder stream (which might be more or less than what we asked for) */
+                       ContentAudio all = decoder->get_audio (j, content_frame, request_frames, accurate);
 
-               /* Remap channels */
-               shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), all->audio->frames()));
-               dcp_mapped->make_silent ();
-               AudioMapping map = content->audio_mapping ();
-               for (int i = 0; i < map.content_channels(); ++i) {
-                       for (int j = 0; j < _film->audio_channels(); ++j) {
-                               if (map.get (i, static_cast<dcp::Channel> (j)) > 0) {
-                                       dcp_mapped->accumulate_channel (
-                                               all->audio.get(),
-                                               i,
-                                               j,
-                                               map.get (i, static_cast<dcp::Channel> (j))
-                                               );
+                       /* Gain */
+                       if (content->audio_gain() != 0) {
+                               shared_ptr<AudioBuffers> gain (new AudioBuffers (all.audio));
+                               gain->apply_gain (content->audio_gain ());
+                               all.audio = gain;
+                       }
+
+                       /* Remap channels */
+                       shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), all.audio->frames()));
+                       dcp_mapped->make_silent ();
+                       AudioMapping map = j->mapping ();
+                       for (int i = 0; i < map.input_channels(); ++i) {
+                               for (int j = 0; j < _film->audio_channels(); ++j) {
+                                       if (map.get (i, j) > 0) {
+                                               dcp_mapped->accumulate_channel (
+                                                       all.audio.get(),
+                                                       i,
+                                                       j,
+                                                       map.get (i, j)
+                                                       );
+                                       }
                                }
                        }
+
+                       if (_audio_processor) {
+                               dcp_mapped = _audio_processor->run (dcp_mapped, _film->audio_channels ());
+                       }
+
+                       all.audio = dcp_mapped;
+
+                       audio->accumulate_frames (
+                               all.audio.get(),
+                               content_frame - all.frame,
+                               offset.frames_round (_film->audio_frame_rate()),
+                               min (Frame (all.audio->frames()), request_frames)
+                               );
                }
-               
-               all->audio = dcp_mapped;
-
-               audio->accumulate_frames (
-                       all->audio.get(),
-                       content_frame - all->frame,
-                       offset.frames (_film->audio_frame_rate()),
-                       min (AudioFrame (all->audio->frames()), request_frames)
-                       );
        }
 
        return audio;
 }
 
-VideoFrame
+Frame
 Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
 {
-       /* s is the offset of t from the start position of this content */
+       shared_ptr<const VideoContent> vc = dynamic_pointer_cast<const VideoContent> (piece->content);
        DCPTime s = t - piece->content->position ();
-       s = DCPTime (max (DCPTime::Type (0), s.get ()));
-       s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
+       s = min (piece->content->length_after_trim(), s);
+       s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
 
-       /* Convert this to the content frame */
-       return DCPTime (s + piece->content->trim_start()).frames (_film->video_frame_rate()) / piece->frc.factor ();
+       /* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
+          then convert that ContentTime to frames at the content's rate.  However this fails for
+          situations like content at 29.9978733fps, DCP at 30fps.  The accuracy of the Time type is not
+          enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
+
+          Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
+       */
+       return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
 }
 
 DCPTime
-Player::content_video_to_dcp (shared_ptr<const Piece> piece, VideoFrame f) const
+Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
 {
-       DCPTime t = DCPTime::from_frames (f * piece->frc.factor (), _film->video_frame_rate()) - piece->content->trim_start () + piece->content->position ();
-       if (t < DCPTime ()) {
-               t = DCPTime ();
-       }
-
-       return t;
+       shared_ptr<const VideoContent> vc = dynamic_pointer_cast<const VideoContent> (piece->content);
+       /* 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 ());
 }
 
-AudioFrame
-Player::dcp_to_content_audio (shared_ptr<const Piece> piece, DCPTime t) const
+Frame
+Player::dcp_to_resampled_audio (shared_ptr<const Piece> piece, DCPTime t) const
 {
-       /* s is the offset of t from the start position of this content */
        DCPTime s = t - piece->content->position ();
-       s = DCPTime (max (DCPTime::Type (0), s.get ()));
-       s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
-
-       /* Convert this to the content frame */
-       return DCPTime (s + piece->content->trim_start()).frames (_film->audio_frame_rate());
+       s = min (piece->content->length_after_trim(), s);
+       /* See notes in dcp_to_content_video */
+       return max (DCPTime (), DCPTime (piece->content->trim_start (), piece->frc) + s).frames_floor (_film->audio_frame_rate ());
 }
 
 ContentTime
 Player::dcp_to_content_subtitle (shared_ptr<const Piece> piece, DCPTime t) const
 {
-       /* s is the offset of t from the start position of this content */
        DCPTime s = t - piece->content->position ();
-       s = DCPTime (max (DCPTime::Type (0), s.get ()));
-       s = DCPTime (min (piece->content->length_after_trim().get(), s.get()));
-
-       return ContentTime (s + piece->content->trim_start(), piece->frc);
+       s = min (piece->content->length_after_trim(), s);
+       return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start());
 }
 
-void
-PlayerStatistics::dump (shared_ptr<Log> log) const
-{
-       log->log (String::compose ("Video: %1 good %2 skipped %3 black %4 repeat", video.good, video.skip, video.black, video.repeat), Log::TYPE_GENERAL);
-       log->log (String::compose ("Audio: %1 good %2 skipped %3 silence", audio.good, audio.skip, audio.silence.seconds()), Log::TYPE_GENERAL);
-}
-
-PlayerStatistics const &
-Player::statistics () const
+DCPTime
+Player::content_subtitle_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
 {
-       return _statistics;
+       return max (DCPTime (), DCPTime (t - piece->content->trim_start(), piece->frc) + piece->content->position());
 }
 
+/** @param burnt true to return only subtitles to be burnt, false to return only
+ *  subtitles that should not be burnt.  This parameter will be ignored if
+ *  _always_burn_subtitles is true; in this case, all subtitles will be returned.
+ */
 PlayerSubtitles
-Player::get_subtitles (DCPTime time, DCPTime length, bool starting)
+Player::get_subtitles (DCPTime time, DCPTime length, bool starting, bool burnt)
 {
        list<shared_ptr<Piece> > subs = overlaps<SubtitleContent> (time, time + length);
 
@@ -552,7 +626,12 @@ Player::get_subtitles (DCPTime time, DCPTime length, bool starting)
 
        for (list<shared_ptr<Piece> >::const_iterator j = subs.begin(); j != subs.end(); ++j) {
                shared_ptr<SubtitleContent> subtitle_content = dynamic_pointer_cast<SubtitleContent> ((*j)->content);
-               if (!subtitle_content->use_subtitles ()) {
+               if (!subtitle_content->use_subtitles () || (!_always_burn_subtitles && (burnt != subtitle_content->burn_subtitles ()))) {
+                       continue;
+               }
+
+               shared_ptr<DCPContent> dcp_content = dynamic_pointer_cast<DCPContent> (subtitle_content);
+               if (dcp_content && dcp_content->reference_subtitle () && !_play_referenced) {
                        continue;
                }
 
@@ -563,7 +642,7 @@ Player::get_subtitles (DCPTime time, DCPTime length, bool starting)
 
                list<ContentImageSubtitle> image = subtitle_decoder->get_image_subtitles (ContentTimePeriod (from, to), starting);
                for (list<ContentImageSubtitle>::iterator i = image.begin(); i != image.end(); ++i) {
-                       
+
                        /* Apply content's subtitle offsets */
                        i->sub.rectangle.x += subtitle_content->subtitle_x_offset ();
                        i->sub.rectangle.y += subtitle_content->subtitle_y_offset ();
@@ -575,16 +654,26 @@ Player::get_subtitles (DCPTime time, DCPTime length, bool starting)
                        /* Apply a corrective translation to keep the subtitle centred after that scale */
                        i->sub.rectangle.x -= i->sub.rectangle.width * (subtitle_content->subtitle_x_scale() - 1);
                        i->sub.rectangle.y -= i->sub.rectangle.height * (subtitle_content->subtitle_y_scale() - 1);
-                       
+
                        ps.image.push_back (i->sub);
                }
 
                list<ContentTextSubtitle> text = subtitle_decoder->get_text_subtitles (ContentTimePeriod (from, to), starting);
                BOOST_FOREACH (ContentTextSubtitle& ts, text) {
-                       BOOST_FOREACH (dcp::SubtitleString& s, ts.subs) {
+                       BOOST_FOREACH (dcp::SubtitleString s, ts.subs) {
+                               s.set_h_position (s.h_position() + subtitle_content->subtitle_x_offset ());
                                s.set_v_position (s.v_position() + subtitle_content->subtitle_y_offset ());
-                               s.set_size (s.size() * max (subtitle_content->subtitle_x_scale(), subtitle_content->subtitle_y_scale()));
+                               float const xs = subtitle_content->subtitle_x_scale();
+                               float const ys = subtitle_content->subtitle_y_scale();
+                               float const average = s.size() * (xs + ys) / 2;
+                               s.set_size (average);
+                               if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
+                                       s.set_aspect_adjust (xs / ys);
+                               }
+                               s.set_in (dcp::Time(content_subtitle_to_dcp (*j, ts.period().from).seconds()));
+                               s.set_out (dcp::Time(content_subtitle_to_dcp (*j, ts.period().to).seconds()));
                                ps.text.push_back (s);
+                               ps.add_fonts (subtitle_content->fonts ());
                        }
                }
        }
@@ -620,3 +709,60 @@ Player::set_ignore_video ()
 {
        _ignore_video = true;
 }
+
+/** Set this player never to produce any audio data */
+void
+Player::set_ignore_audio ()
+{
+       _ignore_audio = 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.
+ */
+void
+Player::set_always_burn_subtitles (bool burn)
+{
+       _always_burn_subtitles = burn;
+}
+
+void
+Player::set_fast ()
+{
+       _fast = true;
+       _have_valid_pieces = false;
+}
+
+void
+Player::set_play_referenced ()
+{
+       _play_referenced = true;
+       _have_valid_pieces = false;
+}
+
+list<shared_ptr<dcp::ReelAsset> >
+Player::get_reel_assets ()
+{
+       list<shared_ptr<dcp::ReelAsset> > a;
+
+       BOOST_FOREACH (shared_ptr<Content> i, _playlist->content ()) {
+               shared_ptr<DCPContent> j = dynamic_pointer_cast<DCPContent> (i);
+               if (!j) {
+                       continue;
+               }
+               /* XXX: hack hack hack */
+               DCPDecoder decoder (j, false);
+               if (j->reference_video ()) {
+                       a.push_back (decoder.reels().front()->main_picture ());
+               }
+               if (j->reference_audio ()) {
+                       a.push_back (decoder.reels().front()->main_sound ());
+               }
+               if (j->reference_subtitle ()) {
+                       a.push_back (decoder.reels().front()->main_subtitle ());
+               }
+       }
+
+       return a;
+}