+
+list<shared_ptr<Piece> >
+Player::overlaps (DCPTime from, DCPTime to, boost::function<bool (Content *)> valid)
+{
+ if (!_have_valid_pieces) {
+ setup_pieces ();
+ }
+
+ list<shared_ptr<Piece> > overlaps;
+ BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
+ if (valid (i->content.get ()) && i->content->position() < to && i->content->end() > from) {
+ overlaps.push_back (i);
+ }
+ }
+
+ return overlaps;
+}
+
+bool
+Player::pass ()
+{
+ if (!_have_valid_pieces) {
+ setup_pieces ();
+ }
+
+ shared_ptr<Piece> earliest;
+ DCPTime earliest_position;
+ BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
+ DCPTime const t = i->content->position() + DCPTime (i->decoder->position(), i->frc);
+ if (!earliest || t < earliest_position) {
+ earliest_position = t;
+ earliest = i;
+ }
+ }
+
+ if (!earliest) {
+ return true;
+ }
+
+ cout << "Pass " << earliest->content->path(0) << "\n";
+ earliest->decoder->pass ();
+
+ /* Emit any audio that is ready */
+
+ pair<shared_ptr<AudioBuffers>, DCPTime> audio = _audio_merger.pull (earliest_position);
+ if (audio.first->frames() > 0) {
+ DCPOMATIC_ASSERT (audio.second >= _last_audio_time);
+ DCPTime t = _last_audio_time;
+ while (t < audio.second) {
+ /* Silence up to the time of this new audio */
+ DCPTime block = min (DCPTime::from_seconds (0.5), audio.second - t);
+ shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), block.frames_round(_film->audio_frame_rate())));
+ silence->make_silent ();
+ Audio (silence, t);
+ t += block;
+ }
+
+ Audio (audio.first, audio.second);
+ _last_audio_time = audio.second;
+ }
+
+ return false;
+}
+
+void
+Player::video (weak_ptr<Piece> wp, ContentVideo video)
+{
+ shared_ptr<Piece> piece = wp.lock ();
+ if (!piece) {
+ return;
+ }
+
+ /* Time and period of the frame we will emit */
+ DCPTime const time = content_video_to_dcp (piece, video.frame.index());
+ DCPTimePeriod const period (time, time + DCPTime::from_frames (1, _film->video_frame_rate()));
+
+ /* Get any subtitles */
+
+ optional<PositionImage> subtitles;
+
+ BOOST_FOREACH (PlayerSubtitles i, _subtitles) {
+
+ if (!i.period.overlap (period)) {
+ continue;
+ }
+
+ list<PositionImage> sub_images;
+
+ /* Image subtitles */
+ list<PositionImage> c = transform_image_subtitles (i.image);
+ copy (c.begin(), c.end(), back_inserter (sub_images));
+
+ /* Text subtitles (rendered to an image) */
+ if (!i.text.empty ()) {
+ list<PositionImage> s = render_subtitles (i.text, i.fonts, _video_container_size, time);
+ copy (s.begin (), s.end (), back_inserter (sub_images));
+ }
+
+ if (!sub_images.empty ()) {
+ subtitles = merge (sub_images);
+ }
+ }
+
+ /* Fill gaps */
+
+ if (_last_video_time) {
+ for (DCPTime i = _last_video_time.get(); i < time; i += DCPTime::from_frames (1, _film->video_frame_rate())) {
+ if (_playlist->video_content_at(i) && _last_video) {
+ Video (_last_video->clone (i));
+ } else {
+ Video (black_player_video_frame (i));
+ }
+ }
+ }
+
+ _last_video.reset (
+ new PlayerVideo (
+ video.image,
+ time,
+ piece->content->video->crop (),
+ piece->content->video->fade (video.frame.index()),
+ piece->content->video->scale().size (
+ piece->content->video, _video_container_size, _film->frame_size ()
+ ),
+ _video_container_size,
+ video.frame.eyes(),
+ video.part,
+ piece->content->video->colour_conversion ()
+ )
+ );
+
+ if (subtitles) {
+ _last_video->set_subtitle (subtitles.get ());
+ }
+
+ _last_video_time = time;
+
+ cout << "Video @ " << to_string(_last_video_time.get()) << "\n";
+ Video (_last_video);
+
+ /* Discard any subtitles we no longer need */
+
+ for (list<PlayerSubtitles>::iterator i = _subtitles.begin (); i != _subtitles.end(); ) {
+ list<PlayerSubtitles>::iterator tmp = i;
+ ++tmp;
+
+ if (i->period.to < time) {
+ _subtitles.erase (i);
+ }
+
+ i = tmp;
+ }
+}
+
+void
+Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
+{
+ shared_ptr<Piece> piece = wp.lock ();
+ if (!piece) {
+ return;
+ }
+
+ shared_ptr<AudioContent> content = piece->content->audio;
+ DCPOMATIC_ASSERT (content);
+
+ shared_ptr<AudioBuffers> audio = content_audio.audio;
+
+ /* Gain */
+ if (content->gain() != 0) {
+ shared_ptr<AudioBuffers> gain (new AudioBuffers (audio));
+ gain->apply_gain (content->gain ());
+ audio = gain;
+ }
+
+ /* XXX: end-trimming used to be checked here */
+
+ /* Compute time in the DCP */
+ DCPTime const time = resampled_audio_to_dcp (piece, content_audio.frame) + DCPTime::from_seconds (content->delay() / 1000);
+
+ /* Remap channels */
+ shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), 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 (
+ audio.get(),
+ i,
+ static_cast<dcp::Channel> (j),
+ map.get (i, static_cast<dcp::Channel> (j))
+ );
+ }
+ }
+ }
+
+ audio = dcp_mapped;
+
+ if (_audio_processor) {
+ audio = _audio_processor->run (audio, _film->audio_channels ());
+ }
+
+ _audio_merger.push (audio, time);
+}
+
+void
+Player::image_subtitle (weak_ptr<Piece> wp, ContentImageSubtitle subtitle)
+{
+ shared_ptr<Piece> piece = wp.lock ();
+ if (!piece) {
+ return;
+ }
+
+ /* Apply content's subtitle offsets */
+ subtitle.sub.rectangle.x += piece->content->subtitle->x_offset ();
+ subtitle.sub.rectangle.y += piece->content->subtitle->y_offset ();
+
+ /* 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;
+ ps.image.push_back (subtitle.sub);
+ ps.period = DCPTimePeriod (content_time_to_dcp (piece, subtitle.period().from), content_time_to_dcp (piece, subtitle.period().to));
+
+ if (piece->content->subtitle->use() && (piece->content->subtitle->burn() || _always_burn_subtitles)) {
+ _subtitles.push_back (ps);
+ } else {
+ Subtitle (ps);
+ }
+}
+
+void
+Player::text_subtitle (weak_ptr<Piece> wp, ContentTextSubtitle subtitle)
+{
+ shared_ptr<Piece> piece = wp.lock ();
+ if (!piece) {
+ return;
+ }
+
+ PlayerSubtitles ps;
+
+ 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 ());
+ float const xs = piece->content->subtitle->x_scale();
+ float const ys = piece->content->subtitle->y_scale();
+ float size = s.size();
+
+ /* Adjust size to express the common part of the scaling;
+ e.g. if xs = ys = 0.5 we scale size by 2.
+ */
+ if (xs > 1e-5 && ys > 1e-5) {
+ size *= 1 / min (1 / xs, 1 / ys);
+ }
+ s.set_size (size);
+
+ /* Then express aspect ratio changes */
+ if (fabs (1.0 - xs / ys) > dcp::ASPECT_ADJUST_EPSILON) {
+ s.set_aspect_adjust (xs / ys);
+ }
+
+ ps.period = DCPTimePeriod (content_time_to_dcp (piece, subtitle.period().from), content_time_to_dcp (piece, subtitle.period().to));
+
+ s.set_in (dcp::Time(ps.period.from.seconds(), 1000));
+ s.set_out (dcp::Time(ps.period.to.seconds(), 1000));
+ ps.text.push_back (SubtitleString (s, piece->content->subtitle->outline_width()));
+ ps.add_fonts (piece->content->subtitle->fonts ());
+ }
+
+ if (piece->content->subtitle->use() && (piece->content->subtitle->burn() || _always_burn_subtitles)) {
+ _subtitles.push_back (ps);
+ } else {
+ Subtitle (ps);
+ }
+}
+
+void
+Player::seek (DCPTime time, bool accurate)
+{
+ BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
+ if (i->content->position() <= time && time < i->content->end()) {
+ i->decoder->seek (dcp_to_content_time (i, time), accurate);
+ }
+ }
+
+ if (accurate) {
+ _last_video_time = time - DCPTime::from_frames (1, _film->video_frame_rate ());
+ } else {
+ _last_video_time = optional<DCPTime> ();
+ }
+}