X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fplayer.cc;h=31c3c26e496db5d6bc808d0d1c3e266d18d5e9dd;hb=3d90ce7a500a33b6147c30b65766efcbc447f5ab;hp=c70ac8852baf27b9b7c9ebbd6a7e3e9270e65517;hpb=4b7b0edb359ae68f2dbcab90c7c10382f507fa5b;p=dcpomatic.git diff --git a/src/lib/player.cc b/src/lib/player.cc index c70ac8852..31c3c26e4 100644 --- a/src/lib/player.cc +++ b/src/lib/player.cc @@ -76,24 +76,6 @@ using boost::dynamic_pointer_cast; using boost::optional; using boost::scoped_ptr; -static bool -has_video (Content* c) -{ - return static_cast(c->video); -} - -static bool -has_audio (Content* c) -{ - return static_cast(c->audio); -} - -static bool -has_subtitle (Content* c) -{ - return static_cast(c->subtitle); -} - Player::Player (shared_ptr film, shared_ptr playlist) : _film (film) , _playlist (playlist) @@ -103,6 +85,7 @@ Player::Player (shared_ptr film, shared_ptr playlist , _always_burn_subtitles (false) , _fast (false) , _play_referenced (false) + , _audio_merger (_film->audio_channels(), _film->audio_frame_rate()) { _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1)); _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this)); @@ -123,7 +106,7 @@ Player::setup_pieces () continue; } - shared_ptr decoder = decoder_factory (i, _film->log(), _fast); + shared_ptr decoder = decoder_factory (i, _film->log()); FrameRateChange frc (i->active_video_frame_rate(), _film->video_frame_rate()); if (!decoder) { @@ -139,7 +122,30 @@ Player::setup_pieces () decoder->audio->set_ignore (); } - _pieces.push_back (shared_ptr (new Piece (i, decoder, frc))); + if (decoder->audio && _fast) { + decoder->audio->set_fast (); + } + + shared_ptr dcp = dynamic_pointer_cast (decoder); + if (dcp && _play_referenced) { + dcp->set_decode_referenced (); + } + + shared_ptr piece (new Piece (i, decoder, frc)); + _pieces.push_back (piece); + + if (decoder->video) { + decoder->video->Data.connect (bind (&Player::video, this, weak_ptr (piece), _1)); + } + + if (decoder->audio) { + decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr (piece), _1, _2)); + } + + if (decoder->subtitle) { + decoder->subtitle->ImageData.connect (bind (&Player::image_subtitle, this, weak_ptr (piece), _1)); + decoder->subtitle->TextData.connect (bind (&Player::text_subtitle, this, weak_ptr (piece), _1)); + } } _have_valid_pieces = true; @@ -160,29 +166,35 @@ Player::playlist_content_changed (weak_ptr w, int property, bool freque property == ContentProperty::TRIM_END || property == ContentProperty::PATH || property == VideoContentProperty::FRAME_TYPE || - property == DCPContentProperty::CAN_BE_PLAYED || + property == DCPContentProperty::NEEDS_ASSETS || + property == DCPContentProperty::NEEDS_KDM || property == SubtitleContentProperty::COLOUR || property == SubtitleContentProperty::OUTLINE || - property == SubtitleContentProperty::OUTLINE_COLOUR || - property == FFmpegContentProperty::SUBTITLE_STREAM + property == SubtitleContentProperty::SHADOW || + property == SubtitleContentProperty::EFFECT_COLOUR || + property == FFmpegContentProperty::SUBTITLE_STREAM || + property == VideoContentProperty::COLOUR_CONVERSION ) { _have_valid_pieces = false; Changed (frequent); } else if ( + property == SubtitleContentProperty::LINE_SPACING || + property == SubtitleContentProperty::OUTLINE_WIDTH || + property == SubtitleContentProperty::Y_SCALE || + property == SubtitleContentProperty::FADE_IN || + property == SubtitleContentProperty::FADE_OUT || property == ContentProperty::VIDEO_FRAME_RATE || property == SubtitleContentProperty::USE || property == SubtitleContentProperty::X_OFFSET || property == SubtitleContentProperty::Y_OFFSET || property == SubtitleContentProperty::X_SCALE || - property == SubtitleContentProperty::Y_SCALE || property == SubtitleContentProperty::FONTS || property == VideoContentProperty::CROP || property == VideoContentProperty::SCALE || property == VideoContentProperty::FADE_IN || - property == VideoContentProperty::FADE_OUT || - property == VideoContentProperty::COLOUR_CONVERSION + property == VideoContentProperty::FADE_OUT ) { Changed (frequent); @@ -291,225 +303,6 @@ Player::black_player_video_frame (DCPTime time) const ); } -/** @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 > -Player::get_video (DCPTime time, bool accurate) -{ - if (!_have_valid_pieces) { - setup_pieces (); - } - - /* Find subtitles for possible burn-in */ - - PlayerSubtitles ps = get_subtitles (time, DCPTime::from_frames (1, _film->video_frame_rate ()), false, true, accurate); - - list sub_images; - - /* Image subtitles */ - list 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 s = render_subtitles (ps.text, ps.fonts, _video_container_size); - copy (s.begin (), s.end (), back_inserter (sub_images)); - } - - optional subtitles; - if (!sub_images.empty ()) { - subtitles = merge (sub_images); - } - - /* Find pieces containing video which is happening now */ - - list > ov = overlaps ( - time, - time + DCPTime::from_frames (1, _film->video_frame_rate ()), - &has_video - ); - - list > pvf; - - if (ov.empty ()) { - /* No video content at this time */ - pvf.push_back (black_player_video_frame (time)); - } else { - /* Some video content at this time */ - shared_ptr last = *(ov.rbegin ()); - VideoFrameType const last_type = last->content->video->frame_type (); - - /* Get video from appropriate piece(s) */ - BOOST_FOREACH (shared_ptr piece, ov) { - - shared_ptr decoder = piece->decoder->video; - DCPOMATIC_ASSERT (decoder); - - shared_ptr dcp_content = dynamic_pointer_cast (piece->content); - if (dcp_content && dcp_content->reference_video () && !_play_referenced) { - continue; - } - - 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 && piece->content->video->frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) || - (last_type == VIDEO_FRAME_TYPE_3D_RIGHT && piece->content->video->frame_type() == VIDEO_FRAME_TYPE_3D_LEFT); - - if (use) { - /* We want to use this piece */ - list content_video = decoder->get (dcp_to_content_video (piece, time), accurate); - if (content_video.empty ()) { - pvf.push_back (black_player_video_frame (time)); - } else { - dcp::Size image_size = piece->content->video->scale().size ( - piece->content->video, _video_container_size, _film->frame_size () - ); - - for (list::const_iterator i = content_video.begin(); i != content_video.end(); ++i) { - pvf.push_back ( - shared_ptr ( - new PlayerVideo ( - i->image, - content_video_to_dcp (piece, i->frame.index()), - piece->content->video->crop (), - piece->content->video->fade (i->frame.index()), - image_size, - _video_container_size, - i->frame.eyes(), - i->part, - piece->content->video->colour_conversion () - ) - ) - ); - } - } - } else { - /* Discard unused video */ - decoder->get (dcp_to_content_video (piece, time), accurate); - } - } - } - - if (subtitles) { - BOOST_FOREACH (shared_ptr 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 -Player::get_audio (DCPTime time, DCPTime length, bool accurate) -{ - if (!_have_valid_pieces) { - setup_pieces (); - } - - Frame const length_frames = length.frames_round (_film->audio_frame_rate ()); - - shared_ptr audio (new AudioBuffers (_film->audio_channels(), length_frames)); - audio->make_silent (); - - list > ov = overlaps (time, time + length, has_audio); - if (ov.empty ()) { - return audio; - } - - bool all_referenced = true; - BOOST_FOREACH (shared_ptr i, ov) { - shared_ptr dcp_content = dynamic_pointer_cast (i->content); - if (i->content->audio && (!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 (); - } - - BOOST_FOREACH (shared_ptr i, ov) { - - DCPOMATIC_ASSERT (i->content->audio); - shared_ptr decoder = i->decoder->audio; - DCPOMATIC_ASSERT (decoder); - - /* The time that we should request from the content */ - DCPTime request = time - DCPTime::from_seconds (i->content->audio->delay() / 1000.0); - 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_round (_film->audio_frame_rate ()); - if (request_frames < 0) { - request_frames = 0; - } - request = DCPTime (); - } - - Frame const content_frame = dcp_to_resampled_audio (i, request); - - BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams ()) { - - 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 (j, content_frame, request_frames, accurate); - - /* Gain */ - if (i->content->audio->gain() != 0) { - shared_ptr gain (new AudioBuffers (all.audio)); - gain->apply_gain (i->content->audio->gain ()); - all.audio = gain; - } - - /* Remap channels */ - shared_ptr 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) - ); - } - } - - return audio; -} - Frame Player::dcp_to_content_video (shared_ptr piece, DCPTime t) const { @@ -544,8 +337,16 @@ Player::dcp_to_resampled_audio (shared_ptr piece, DCPTime t) const return max (DCPTime (), DCPTime (piece->content->trim_start (), piece->frc) + s).frames_floor (_film->audio_frame_rate ()); } +DCPTime +Player::resampled_audio_to_dcp (shared_ptr 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 ()); +} + ContentTime -Player::dcp_to_content_subtitle (shared_ptr piece, DCPTime t) const +Player::dcp_to_content_time (shared_ptr piece, DCPTime t) const { DCPTime s = t - piece->content->position (); s = min (piece->content->length_after_trim(), s); @@ -553,87 +354,11 @@ Player::dcp_to_content_subtitle (shared_ptr piece, DCPTime t) const } DCPTime -Player::content_subtitle_to_dcp (shared_ptr piece, ContentTime t) const +Player::content_time_to_dcp (shared_ptr piece, ContentTime t) const { 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, bool burnt, bool accurate) -{ - list > subs = overlaps (time, time + length, has_subtitle); - - PlayerSubtitles ps (time, length); - - for (list >::const_iterator j = subs.begin(); j != subs.end(); ++j) { - if (!(*j)->content->subtitle->use () || (!_always_burn_subtitles && (burnt != (*j)->content->subtitle->burn ()))) { - continue; - } - - shared_ptr dcp_content = dynamic_pointer_cast ((*j)->content); - if (dcp_content && dcp_content->reference_subtitle () && !_play_referenced) { - continue; - } - - shared_ptr subtitle_decoder = (*j)->decoder->subtitle; - ContentTime const from = dcp_to_content_subtitle (*j, time); - /* XXX: this video_frame_rate() should be the rate that the subtitle content has been prepared for */ - ContentTime const to = from + ContentTime::from_frames (1, _film->video_frame_rate ()); - - list image = subtitle_decoder->get_image (ContentTimePeriod (from, to), starting, accurate); - for (list::iterator i = image.begin(); i != image.end(); ++i) { - - /* Apply content's subtitle offsets */ - i->sub.rectangle.x += (*j)->content->subtitle->x_offset (); - i->sub.rectangle.y += (*j)->content->subtitle->y_offset (); - - /* Apply content's subtitle scale */ - i->sub.rectangle.width *= (*j)->content->subtitle->x_scale (); - i->sub.rectangle.height *= (*j)->content->subtitle->y_scale (); - - /* Apply a corrective translation to keep the subtitle centred after that scale */ - i->sub.rectangle.x -= i->sub.rectangle.width * ((*j)->content->subtitle->x_scale() - 1); - i->sub.rectangle.y -= i->sub.rectangle.height * ((*j)->content->subtitle->y_scale() - 1); - - ps.image.push_back (i->sub); - } - - list text = subtitle_decoder->get_text (ContentTimePeriod (from, to), starting, accurate); - BOOST_FOREACH (ContentTextSubtitle& ts, text) { - BOOST_FOREACH (dcp::SubtitleString s, ts.subs) { - s.set_h_position (s.h_position() + (*j)->content->subtitle->x_offset ()); - s.set_v_position (s.v_position() + (*j)->content->subtitle->y_offset ()); - float const xs = (*j)->content->subtitle->x_scale(); - float const ys = (*j)->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); - } - s.set_in (dcp::Time(content_subtitle_to_dcp (*j, ts.period().from).seconds(), 1000)); - s.set_out (dcp::Time(content_subtitle_to_dcp (*j, ts.period().to).seconds(), 1000)); - ps.text.push_back (s); - ps.add_fonts ((*j)->content->subtitle->fonts ()); - } - } - } - - return ps; -} - list > Player::get_subtitle_fonts () { @@ -706,39 +431,48 @@ Player::get_reel_assets () scoped_ptr decoder; try { - decoder.reset (new DCPDecoder (j, _film->log(), false)); + decoder.reset (new DCPDecoder (j, _film->log())); } catch (...) { return a; } int64_t offset = 0; BOOST_FOREACH (shared_ptr k, decoder->reels()) { + + DCPOMATIC_ASSERT (j->video_frame_rate ()); + double const cfr = j->video_frame_rate().get(); + Frame const trim_start = j->trim_start().frames_round (cfr); + Frame const trim_end = j->trim_end().frames_round (cfr); + int const ffr = _film->video_frame_rate (); + DCPTime const from = i->position() + DCPTime::from_frames (offset, _film->video_frame_rate()); if (j->reference_video ()) { + shared_ptr ra = k->main_picture (); + DCPOMATIC_ASSERT (ra); + ra->set_entry_point (ra->entry_point() + trim_start); + ra->set_duration (ra->duration() - trim_start - trim_end); a.push_back ( - ReferencedReelAsset ( - k->main_picture (), - DCPTimePeriod (from, from + DCPTime::from_frames (k->main_picture()->duration(), _film->video_frame_rate())) - ) + ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr))) ); } if (j->reference_audio ()) { + shared_ptr ra = k->main_sound (); + DCPOMATIC_ASSERT (ra); + ra->set_entry_point (ra->entry_point() + trim_start); + ra->set_duration (ra->duration() - trim_start - trim_end); a.push_back ( - ReferencedReelAsset ( - k->main_sound (), - DCPTimePeriod (from, from + DCPTime::from_frames (k->main_sound()->duration(), _film->video_frame_rate())) - ) + ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr))) ); } if (j->reference_subtitle ()) { - DCPOMATIC_ASSERT (k->main_subtitle ()); + shared_ptr ra = k->main_subtitle (); + DCPOMATIC_ASSERT (ra); + ra->set_entry_point (ra->entry_point() + trim_start); + ra->set_duration (ra->duration() - trim_start - trim_end); a.push_back ( - ReferencedReelAsset ( - k->main_subtitle (), - DCPTimePeriod (from, from + DCPTime::from_frames (k->main_subtitle()->duration(), _film->video_frame_rate())) - ) + ReferencedReelAsset (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr))) ); } @@ -766,3 +500,283 @@ Player::overlaps (DCPTime from, DCPTime to, boost::function va return overlaps; } + +bool +Player::pass () +{ + if (!_have_valid_pieces) { + setup_pieces (); + } + + shared_ptr earliest; + DCPTime earliest_position; + BOOST_FOREACH (shared_ptr 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, 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 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 wp, ContentVideo video) +{ + shared_ptr 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 subtitles; + + BOOST_FOREACH (PlayerSubtitles i, _subtitles) { + + if (!i.period.overlap (period)) { + continue; + } + + list sub_images; + + /* Image subtitles */ + list 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 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::iterator i = _subtitles.begin (); i != _subtitles.end(); ) { + list::iterator tmp = i; + ++tmp; + + if (i->period.to < time) { + _subtitles.erase (i); + } + + i = tmp; + } +} + +void +Player::audio (weak_ptr wp, AudioStreamPtr stream, ContentAudio content_audio) +{ + shared_ptr piece = wp.lock (); + if (!piece) { + return; + } + + shared_ptr content = piece->content->audio; + DCPOMATIC_ASSERT (content); + + shared_ptr audio = content_audio.audio; + + /* Gain */ + if (content->gain() != 0) { + shared_ptr 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 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 (j)) > 0) { + dcp_mapped->accumulate_channel ( + audio.get(), + i, + static_cast (j), + map.get (i, static_cast (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 wp, ContentImageSubtitle subtitle) +{ + shared_ptr 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 wp, ContentTextSubtitle subtitle) +{ + shared_ptr 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 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 (); + } +}