Merge master.
[dcpomatic.git] / src / lib / player.cc
index 263998693e7887188eaf1f4d3b87f3cefa935ab6..f83e4ed26b7368228db0cad5e476d27c05a1ab7b 100644 (file)
 #include "player.h"
 #include "film.h"
 #include "ffmpeg_decoder.h"
+#include "audio_buffers.h"
 #include "ffmpeg_content.h"
 #include "image_decoder.h"
 #include "image_content.h"
 #include "sndfile_decoder.h"
 #include "sndfile_content.h"
 #include "subtitle_content.h"
+#include "subrip_decoder.h"
+#include "subrip_content.h"
 #include "playlist.h"
 #include "job.h"
 #include "image.h"
 #include "ratio.h"
 #include "log.h"
 #include "scaler.h"
+#include "render_subtitles.h"
 
 using std::list;
 using std::cout;
@@ -69,7 +73,7 @@ Player::Player (shared_ptr<const Film> f, shared_ptr<const Playlist> p)
        , _have_valid_pieces (false)
        , _video_position (0)
        , _audio_position (0)
-       , _audio_merger (f->audio_channels(), bind (&Film::time_to_audio_frames, f.get(), _1), bind (&Film::audio_frames_to_time, f.get(), _1))
+       , _audio_merger (f->audio_channels(), f->audio_frame_rate ())
        , _last_emit_was_black (false)
        , _just_did_inaccurate_seek (false)
        , _approximate_size (false)
@@ -77,7 +81,7 @@ Player::Player (shared_ptr<const Film> f, shared_ptr<const Playlist> p)
        _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));
-       set_video_container_size (fit_ratio_within (_film->container()->ratio (), _film->full_frame ()));
+       set_video_container_size (_film->frame_size ());
 }
 
 void
@@ -103,8 +107,8 @@ Player::pass ()
 
        shared_ptr<Piece> earliest_piece;
        shared_ptr<Decoded> earliest_decoded;
-       DCPTime earliest_time = TIME_MAX;
-       DCPTime earliest_audio = TIME_MAX;
+       DCPTime earliest_time = DCPTime::max ();
+       DCPTime earliest_audio = DCPTime::max ();
 
        for (list<shared_ptr<Piece> >::iterator i = _pieces.begin(); i != _pieces.end(); ++i) {
 
@@ -119,10 +123,10 @@ Player::pass ()
                                break;
                        }
 
-                       dec->set_dcp_times ((*i)->frc.speed_up, offset);
+                       dec->set_dcp_times ((*i)->frc, offset);
                        DCPTime const t = dec->dcp_time - offset;
-                       if (t >= (*i)->content->full_length() - (*i)->content->trim_end ()) {
-                               /* In the end-trimmed part; decoder has nothing eles to give us */
+                       if (t >= ((*i)->content->full_length() - (*i)->content->trim_end ())) {
+                               /* In the end-trimmed part; decoder has nothing else to give us */
                                dec.reset ();
                                done = true;
                        } else if (t >= (*i)->content->trim_start ()) {
@@ -154,29 +158,28 @@ Player::pass ()
                return true;
        }
 
-       if (earliest_audio != TIME_MAX) {
-               TimedAudioBuffers<DCPTime> tb = _audio_merger.pull (max (int64_t (0), earliest_audio));
+       if (earliest_audio != DCPTime::max ()) {
+               if (earliest_audio.get() < 0) {
+                       earliest_audio = DCPTime ();
+               }
+               TimedAudioBuffers tb = _audio_merger.pull (earliest_audio);
                Audio (tb.audio, tb.time);
-               /* This assumes that the audio_frames_to_time conversion is exact
+               /* This assumes that the audio-frames-to-time conversion is exact
                   so that there are no accumulated errors caused by rounding.
                */
-               _audio_position += _film->audio_frames_to_time (tb.audio->frames ());
+               _audio_position += DCPTime::from_frames (tb.audio->frames(), _film->audio_frame_rate ());
        }
 
        /* Emit the earliest thing */
 
        shared_ptr<DecodedVideo> dv = dynamic_pointer_cast<DecodedVideo> (earliest_decoded);
        shared_ptr<DecodedAudio> da = dynamic_pointer_cast<DecodedAudio> (earliest_decoded);
-       shared_ptr<DecodedSubtitle> ds = dynamic_pointer_cast<DecodedSubtitle> (earliest_decoded);
+       shared_ptr<DecodedImageSubtitle> dis = dynamic_pointer_cast<DecodedImageSubtitle> (earliest_decoded);
+       shared_ptr<DecodedTextSubtitle> dts = dynamic_pointer_cast<DecodedTextSubtitle> (earliest_decoded);
 
        /* Will be set to false if we shouldn't consume the peeked DecodedThing */
        bool consume = true;
 
-       /* This is the margin either side of _{video,audio}_position that we will accept
-          as a starting point for a frame consecutive to the previous.
-       */
-       DCPTime const margin = TIME_HZ / (2 * _film->video_frame_rate ());
-       
        if (dv && _video) {
 
                if (_just_did_inaccurate_seek) {
@@ -185,7 +188,7 @@ Player::pass ()
                        emit_video (earliest_piece, dv);
                        step_video_position (dv);
                        
-               } else if (dv->dcp_time - _video_position > margin) {
+               } else if (dv->dcp_time > _video_position) {
 
                        /* Too far ahead */
 
@@ -197,42 +200,53 @@ Player::pass ()
                        if (i == _pieces.end() || !_last_incoming_video.video || !_have_valid_pieces) {
                                /* We're outside all video content */
                                emit_black ();
+                               _statistics.video.black++;
                        } else {
                                /* We're inside some video; repeat the frame */
                                _last_incoming_video.video->dcp_time = _video_position;
                                emit_video (_last_incoming_video.weak_piece, _last_incoming_video.video);
                                step_video_position (_last_incoming_video.video);
+                               _statistics.video.repeat++;
                        }
 
                        consume = false;
 
-               } else if (abs (dv->dcp_time - _video_position) < margin) {
+               } else if (dv->dcp_time == _video_position) {
                        /* We're ok */
                        emit_video (earliest_piece, dv);
                        step_video_position (dv);
+                       _statistics.video.good++;
                } else {
                        /* Too far behind: skip */
+                       _statistics.video.skip++;
                }
 
                _just_did_inaccurate_seek = false;
 
        } else if (da && _audio) {
 
-               if (da->dcp_time - _audio_position > margin) {
+               if (da->dcp_time > _audio_position) {
                        /* Too far ahead */
                        emit_silence (da->dcp_time - _audio_position);
                        consume = false;
-               } else if (abs (da->dcp_time - _audio_position) < margin) {
+                       _statistics.audio.silence += (da->dcp_time - _audio_position);
+               } else if (da->dcp_time == _audio_position) {
                        /* We're ok */
                        emit_audio (earliest_piece, da);
+                       _statistics.audio.good += da->data->frames();
                } else {
                        /* Too far behind: skip */
+                       _statistics.audio.skip += da->data->frames();
                }
                
-       } else if (ds && _video) {
-               _in_subtitle.piece = earliest_piece;
-               _in_subtitle.subtitle = ds;
-               update_subtitle ();
+       } else if (dis && _video) {
+               _image_subtitle.piece = earliest_piece;
+               _image_subtitle.subtitle = dis;
+               update_subtitle_from_image ();
+       } else if (dts && _video) {
+               _text_subtitle.piece = earliest_piece;
+               _text_subtitle.subtitle = dts;
+               update_subtitle_from_text ();
        }
 
        if (consume) {
@@ -259,8 +273,7 @@ Player::emit_video (weak_ptr<Piece> weak_piece, shared_ptr<DecodedVideo> video)
 
        FrameRateChange frc (content->video_frame_rate(), _film->video_frame_rate());
 
-       float const ratio = content->ratio() ? content->ratio()->ratio() : content->video_size_after_crop().ratio();
-       libdcp::Size image_size = fit_ratio_within (ratio, _video_container_size);
+       dcp::Size image_size = content->scale().size (content, _video_container_size);
        if (_approximate_size) {
                image_size.width &= ~3;
                image_size.height &= ~3;
@@ -289,6 +302,7 @@ Player::emit_video (weak_ptr<Piece> weak_piece, shared_ptr<DecodedVideo> video)
 
                pi->set_subtitle (_out_subtitle.image, _out_subtitle.position + container_offset);
        }
+               
                                            
 #ifdef DCPOMATIC_DEBUG
        _last_video = piece->content;
@@ -304,10 +318,10 @@ Player::step_video_position (shared_ptr<DecodedVideo> video)
 {
        /* This is a bit of a hack; don't update _video_position if EYES_RIGHT is on its way */
        if (video->eyes != EYES_LEFT) {
-               /* This assumes that the video_frames_to_time conversion is exact
+               /* This assumes that the video-frames-to-time conversion is exact
                   so that there are no accumulated errors caused by rounding.
                */
-               _video_position += _film->video_frames_to_time (1);
+               _video_position += DCPTime::from_frames (1, _film->video_frame_rate ());
        }
 }
 
@@ -332,19 +346,26 @@ Player::emit_audio (weak_ptr<Piece> weak_piece, shared_ptr<DecodedAudio> audio)
        /* Remap channels */
        shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), audio->data->frames()));
        dcp_mapped->make_silent ();
-       list<pair<int, libdcp::Channel> > map = content->audio_mapping().content_to_dcp ();
-       for (list<pair<int, libdcp::Channel> >::iterator i = map.begin(); i != map.end(); ++i) {
-               if (i->first < audio->data->channels() && i->second < dcp_mapped->channels()) {
-                       dcp_mapped->accumulate_channel (audio->data.get(), i->first, i->second);
+       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 (
+                                       audio->data.get(),
+                                       i,
+                                       static_cast<dcp::Channel> (j),
+                                       map.get (i, static_cast<dcp::Channel> (j))
+                                       );
+                       }
                }
        }
 
        audio->data = dcp_mapped;
 
        /* Delay */
-       audio->dcp_time += content->audio_delay() * TIME_HZ / 1000;
-       if (audio->dcp_time < 0) {
-               int const frames = - audio->dcp_time * _film->audio_frame_rate() / TIME_HZ;
+       audio->dcp_time += DCPTime::from_seconds (content->audio_delay() / 1000.0);
+       if (audio->dcp_time < DCPTime (0)) {
+               int const frames = - audio->dcp_time.frames (_film->audio_frame_rate());
                if (frames >= audio->data->frames ()) {
                        return;
                }
@@ -353,7 +374,7 @@ Player::emit_audio (weak_ptr<Piece> weak_piece, shared_ptr<DecodedAudio> audio)
                trimmed->copy_from (audio->data.get(), audio->data->frames() - frames, frames, 0);
 
                audio->data = trimmed;
-               audio->dcp_time = 0;
+               audio->dcp_time = DCPTime ();
        }
 
        _audio_merger.push (audio->data, audio->dcp_time);
@@ -362,10 +383,10 @@ Player::emit_audio (weak_ptr<Piece> weak_piece, shared_ptr<DecodedAudio> audio)
 void
 Player::flush ()
 {
-       TimedAudioBuffers<DCPTime> tb = _audio_merger.flush ();
+       TimedAudioBuffers tb = _audio_merger.flush ();
        if (_audio && tb.audio) {
                Audio (tb.audio, tb.time);
-               _audio_position += _film->audio_frames_to_time (tb.audio->frames ());
+               _audio_position += DCPTime::from_frames (tb.audio->frames (), _film->audio_frame_rate ());
        }
 
        while (_video && _video_position < _audio_position) {
@@ -375,7 +396,6 @@ Player::flush ()
        while (_audio && _audio_position < _video_position) {
                emit_silence (_video_position - _audio_position);
        }
-       
 }
 
 /** Seek so that the next pass() will yield (approximately) the requested frame.
@@ -400,14 +420,14 @@ Player::seek (DCPTime t, bool accurate)
                s = min ((*i)->content->length_after_trim(), s);
 
                /* Convert this to the content time */
-               ContentTime ct = (s + (*i)->content->trim_start()) * (*i)->frc.speed_up;
+               ContentTime ct (s + (*i)->content->trim_start(), (*i)->frc);
 
                /* And seek the decoder */
                (*i)->decoder->seek (ct, accurate);
        }
 
-       _video_position = time_round_up (t, TIME_HZ / _film->video_frame_rate());
-       _audio_position = time_round_up (t, TIME_HZ / _film->audio_frame_rate());
+       _video_position = t.round_up (_film->video_frame_rate());
+       _audio_position = t.round_up (_film->audio_frame_rate());
 
        _audio_merger.clear (_audio_position);
 
@@ -432,15 +452,45 @@ Player::setup_pieces ()
 
        for (ContentList::iterator i = content.begin(); i != content.end(); ++i) {
 
+               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);
                if (fc) {
-                       decoder.reset (new FFmpegDecoder (_film, fc, _video, _audio));
+                       decoder.reset (new FFmpegDecoder (fc, _film->log(), _video, _audio, _film->with_subtitles ()));
                        frc = FrameRateChange (fc->video_frame_rate(), _film->video_frame_rate());
                }
-               
+
+               /* ImageContent */
                shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (*i);
                if (ic) {
                        /* See if we can re-use an old ImageDecoder */
@@ -452,45 +502,27 @@ Player::setup_pieces ()
                        }
 
                        if (!decoder) {
-                               decoder.reset (new ImageDecoder (_film, ic));
+                               decoder.reset (new ImageDecoder (ic));
                        }
 
                        frc = FrameRateChange (ic->video_frame_rate(), _film->video_frame_rate());
                }
 
+               /* SndfileContent */
                shared_ptr<const SndfileContent> sc = dynamic_pointer_cast<const SndfileContent> (*i);
                if (sc) {
-                       decoder.reset (new SndfileDecoder (_film, sc));
-
-                       /* Working out the frc for this content is a bit tricky: what if it overlaps
-                          two pieces of video content with different frame rates?  For now, use
-                          the one with the best overlap.
-                       */
-
-                       DCPTime best_overlap_t = 0;
-                       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(), sc->position()) - min (vc->end(), sc->end());
-                               if (overlap > best_overlap_t) {
-                                       best_overlap = vc;
-                                       best_overlap_t = overlap;
-                               }
-                       }
+                       decoder.reset (new SndfileDecoder (sc));
+                       frc = best_overlap_frc;
+               }
 
-                       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 ());
-                       }
+               /* SubRipContent */
+               shared_ptr<const SubRipContent> rc = dynamic_pointer_cast<const SubRipContent> (*i);
+               if (rc) {
+                       decoder.reset (new SubRipDecoder (rc));
+                       frc = best_overlap_frc;
                }
 
-               ContentTime st = (*i)->trim_start() * frc->speed_up;
+               ContentTime st ((*i)->trim_start(), frc.get ());
                decoder->seek (st, true);
                
                _pieces.push_back (shared_ptr<Piece> (new Piece (*i, decoder, frc.get ())));
@@ -501,7 +533,8 @@ Player::setup_pieces ()
        /* The Piece for the _last_incoming_video will no longer be valid */
        _last_incoming_video.video.reset ();
 
-       _video_position = _audio_position = 0;
+       _video_position = DCPTime ();
+       _audio_position = DCPTime ();
 }
 
 void
@@ -521,17 +554,26 @@ Player::content_changed (weak_ptr<Content> w, int property, bool frequent)
                _have_valid_pieces = false;
                Changed (frequent);
 
-       } else if (property == SubtitleContentProperty::SUBTITLE_OFFSET || property == SubtitleContentProperty::SUBTITLE_SCALE) {
+       } else if (
+               property == SubtitleContentProperty::SUBTITLE_X_OFFSET ||
+               property == SubtitleContentProperty::SUBTITLE_Y_OFFSET ||
+               property == SubtitleContentProperty::SUBTITLE_SCALE
+               ) {
 
-               update_subtitle ();
+               update_subtitle_from_image ();
+               update_subtitle_from_text ();
                Changed (frequent);
 
-       } else if (property == VideoContentProperty::VIDEO_CROP || property == VideoContentProperty::VIDEO_RATIO) {
+       } else if (
+               property == VideoContentProperty::VIDEO_CROP || property == VideoContentProperty::VIDEO_SCALE ||
+               property == VideoContentProperty::VIDEO_FRAME_RATE
+               ) {
                
                Changed (frequent);
 
        } else if (property == ContentProperty::PATH) {
 
+               _have_valid_pieces = false;
                Changed (frequent);
        }
 }
@@ -544,7 +586,7 @@ Player::playlist_changed ()
 }
 
 void
-Player::set_video_container_size (libdcp::Size s)
+Player::set_video_container_size (dcp::Size s)
 {
        _video_container_size = s;
 
@@ -570,19 +612,19 @@ Player::emit_black ()
 #endif
 
        Video (_black_frame, EYES_BOTH, ColourConversion(), _last_emit_was_black, _video_position);
-       _video_position += _film->video_frames_to_time (1);
+       _video_position += DCPTime::from_frames (1, _film->video_frame_rate ());
        _last_emit_was_black = true;
 }
 
 void
 Player::emit_silence (DCPTime most)
 {
-       if (most == 0) {
+       if (most == DCPTime ()) {
                return;
        }
        
-       DCPTime t = min (most, TIME_HZ / 2);
-       shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), t * _film->audio_frame_rate() / TIME_HZ));
+       DCPTime t = min (most, DCPTime::from_seconds (0.5));
+       shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), t.frames (_film->audio_frame_rate())));
        silence->make_silent ();
        Audio (silence, _audio_position);
        
@@ -597,20 +639,20 @@ Player::film_changed (Film::Property p)
           last time we were run.
        */
 
-       if (p == Film::SCALER || p == Film::WITH_SUBTITLES || p == Film::CONTAINER) {
+       if (p == Film::SCALER || p == Film::WITH_SUBTITLES || p == Film::CONTAINER || p == Film::VIDEO_FRAME_RATE) {
                Changed (false);
        }
 }
 
 void
-Player::update_subtitle ()
+Player::update_subtitle_from_image ()
 {
-       shared_ptr<Piece> piece = _in_subtitle.piece.lock ();
+       shared_ptr<Piece> piece = _image_subtitle.piece.lock ();
        if (!piece) {
                return;
        }
 
-       if (!_in_subtitle.subtitle->image) {
+       if (!_image_subtitle.subtitle->image) {
                _out_subtitle.image.reset ();
                return;
        }
@@ -618,10 +660,11 @@ Player::update_subtitle ()
        shared_ptr<SubtitleContent> sc = dynamic_pointer_cast<SubtitleContent> (piece->content);
        assert (sc);
 
-       dcpomatic::Rect<double> in_rect = _in_subtitle.subtitle->rect;
-       libdcp::Size scaled_size;
+       dcpomatic::Rect<double> in_rect = _image_subtitle.subtitle->rect;
+       dcp::Size scaled_size;
 
-       in_rect.y += sc->subtitle_offset ();
+       in_rect.x += sc->subtitle_x_offset ();
+       in_rect.y += sc->subtitle_y_offset ();
 
        /* We will scale the subtitle up to fit _video_container_size, and also by the additional subtitle_scale */
        scaled_size.width = in_rect.width * _video_container_size.width * sc->subtitle_scale ();
@@ -641,16 +684,16 @@ Player::update_subtitle ()
        
        _out_subtitle.position.x = rint (_video_container_size.width * (in_rect.x + (in_rect.width * (1 - sc->subtitle_scale ()) / 2)));
        _out_subtitle.position.y = rint (_video_container_size.height * (in_rect.y + (in_rect.height * (1 - sc->subtitle_scale ()) / 2)));
-
-       _out_subtitle.image = _in_subtitle.subtitle->image->scale (
+       
+       _out_subtitle.image = _image_subtitle.subtitle->image->scale (
                scaled_size,
                Scaler::from_id ("bicubic"),
-               PIX_FMT_RGBA,
+               _image_subtitle.subtitle->image->pixel_format (),
                true
                );
-
-       _out_subtitle.from = _in_subtitle.subtitle->dcp_time;
-       _out_subtitle.to = _in_subtitle.subtitle->dcp_time_to;
+       
+       _out_subtitle.from = _image_subtitle.subtitle->dcp_time + piece->content->position ();
+       _out_subtitle.to = _image_subtitle.subtitle->dcp_time_to + piece->content->position ();
 }
 
 /** Re-emit the last frame that was emitted, using current settings for crop, ratio, scaler and subtitles.
@@ -671,18 +714,28 @@ Player::repeat_last_video ()
        return true;
 }
 
+void
+Player::update_subtitle_from_text ()
+{
+       if (_text_subtitle.subtitle->subs.empty ()) {
+               _out_subtitle.image.reset ();
+               return;
+       }
+
+       render_subtitles (_text_subtitle.subtitle->subs, _video_container_size, _out_subtitle.image, _out_subtitle.position);
+}
+
 void
 Player::set_approximate_size ()
 {
        _approximate_size = true;
 }
                              
-
 PlayerImage::PlayerImage (
        shared_ptr<const Image> in,
        Crop crop,
-       libdcp::Size inter_size,
-       libdcp::Size out_size,
+       dcp::Size inter_size,
+       dcp::Size out_size,
        Scaler const * scaler
        )
        : _in (in)
@@ -715,3 +768,15 @@ PlayerImage::image (AVPixelFormat format, bool aligned)
        return out;
 }
 
+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->log (String::compose ("Audio: %1 good %2 skipped %3 silence", audio.good, audio.skip, audio.silence.seconds()));
+}
+
+PlayerStatistics const &
+Player::statistics () const
+{
+       return _statistics;
+}