X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fplayer.cc;h=2e47da5bfc9306c16077410be99dc7b5d00d7415;hb=3c86d70cf46ca11212ae2e2f4d711db0f478c2f5;hp=10c92c0736eb87385b5d4e0e20f88ba95c473f43;hpb=4a5fcd19ca16447ba8b204986a378072a9c730b2;p=dcpomatic.git diff --git a/src/lib/player.cc b/src/lib/player.cc index 10c92c073..2e47da5bf 100644 --- a/src/lib/player.cc +++ b/src/lib/player.cc @@ -1,5 +1,5 @@ /* - Copyright (C) 2013-2016 Carl Hetherington + Copyright (C) 2013-2017 Carl Hetherington This file is part of DCP-o-matic. @@ -47,6 +47,7 @@ #include "content_subtitle.h" #include "dcp_decoder.h" #include "image_decoder.h" +#include "compose.hpp" #include #include #include @@ -76,24 +77,6 @@ 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 +86,7 @@ Player::Player (shared_ptr film, shared_ptr playlist , _always_burn_subtitles (false) , _fast (false) , _play_referenced (false) + , _audio_merger (_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)); @@ -110,6 +94,8 @@ Player::Player (shared_ptr film, shared_ptr playlist set_video_container_size (_film->frame_size ()); film_changed (Film::AUDIO_PROCESSOR); + + seek (DCPTime (), true); } void @@ -139,18 +125,53 @@ Player::setup_pieces () decoder->audio->set_ignore (); } - if (decoder->audio && _fast) { - decoder->audio->set_fast (); - } - shared_ptr dcp = dynamic_pointer_cast (decoder); if (dcp && _play_referenced) { dcp->set_decode_referenced (); } - _pieces.push_back (shared_ptr (new Piece (i, decoder, frc))); + 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->ImageStart.connect (bind (&Player::image_subtitle_start, this, weak_ptr (piece), _1)); + decoder->subtitle->TextStart.connect (bind (&Player::text_subtitle_start, this, weak_ptr (piece), _1)); + decoder->subtitle->Stop.connect (bind (&Player::subtitle_stop, this, weak_ptr (piece), _1)); + } + } + + BOOST_FOREACH (shared_ptr i, _pieces) { + if (i->content->audio) { + BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams()) { + _stream_states[j] = StreamState (i, i->content->position ()); + } + } + } + + if (!_play_referenced) { + BOOST_FOREACH (shared_ptr i, _pieces) { + shared_ptr dc = dynamic_pointer_cast (i->content); + if (dc) { + if (dc->reference_video()) { + _no_video.push_back (DCPTimePeriod (dc->position(), dc->end())); + } + if (dc->reference_audio()) { + _no_audio.push_back (DCPTimePeriod (dc->position(), dc->end())); + } + } + } } + _last_video_time = DCPTime (); + _last_audio_time = DCPTime (); _have_valid_pieces = true; } @@ -169,7 +190,8 @@ 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::SHADOW || @@ -184,19 +206,9 @@ Player::playlist_content_changed (weak_ptr w, int property, bool freque } else if ( property == SubtitleContentProperty::LINE_SPACING || property == SubtitleContentProperty::OUTLINE_WIDTH || - property == SubtitleContentProperty::Y_SCALE - ) { - - /* These changes just need the pieces' decoders to be reset. - It's quite possible that other changes could be handled by - this branch rather than the _have_valid_pieces = false branch - above. This would make things a lot faster. - */ - - reset_pieces (); - Changed (frequent); - - } else if ( + property == SubtitleContentProperty::Y_SCALE || + property == SubtitleContentProperty::FADE_IN || + property == SubtitleContentProperty::FADE_OUT || property == ContentProperty::VIDEO_FRAME_RATE || property == SubtitleContentProperty::USE || property == SubtitleContentProperty::X_OFFSET || @@ -216,10 +228,16 @@ Player::playlist_content_changed (weak_ptr w, int property, bool freque void Player::set_video_container_size (dcp::Size s) { + if (s == _video_container_size) { + return; + } + _video_container_size = s; _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true)); _black_image->make_black (); + + Changed (false); } void @@ -298,12 +316,11 @@ Player::transform_image_subtitles (list subs) const } shared_ptr -Player::black_player_video_frame (DCPTime time) const +Player::black_player_video_frame () const { return shared_ptr ( new PlayerVideo ( shared_ptr (new RawImageProxy (_black_image)), - time, Crop (), optional (), _video_container_size, @@ -315,225 +332,6 @@ 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, time); - 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, - time, - 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 { @@ -568,8 +366,16 @@ 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); @@ -577,87 +383,11 @@ 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); - - 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 (SubtitleString (s, (*j)->content->subtitle->outline_width())); - ps.add_fonts ((*j)->content->subtitle->fonts ()); - } - } - } - - return ps; -} - list > Player::get_subtitle_fonts () { @@ -686,13 +416,6 @@ 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. @@ -737,32 +460,41 @@ Player::get_reel_assets () 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))) ); } @@ -774,27 +506,460 @@ Player::get_reel_assets () return a; } -list > -Player::overlaps (DCPTime from, DCPTime to, boost::function valid) +bool +Player::pass () { if (!_have_valid_pieces) { setup_pieces (); } - list > overlaps; + shared_ptr earliest; + DCPTime earliest_content; + BOOST_FOREACH (shared_ptr i, _pieces) { - if (valid (i->content.get ()) && i->content->position() < to && i->content->end() > from) { - overlaps.push_back (i); + if (!i->done) { + DCPTime const t = content_time_to_dcp (i, i->decoder->position()); + if (!earliest || t < earliest_content) { + earliest_content = t; + earliest = i; + } + } + } + + /* Fill towards the next thing that might happen (or the end of the playlist). This is to fill gaps between content, + NOT to fill gaps within content (the latter is done in ::video()) + */ + DCPTime fill_towards = earliest ? earliest_content : _playlist->length().ceil(_film->video_frame_rate()); + + /* Work out where to fill video from */ + optional video_fill_from; + if (_last_video_time) { + /* Fill from the last video or seek time */ + video_fill_from = _last_video_time; + } + + bool filled = false; + /* Fill some black if we would emit before the earliest piece of content. This is so we act like a phantom + Piece which emits black in spaces (we only emit if we are the earliest thing) + */ + if (video_fill_from && (!earliest || *video_fill_from < earliest_content) && ((fill_towards - *video_fill_from)) >= one_video_frame()) { + list p = subtract(DCPTimePeriod(*video_fill_from, *video_fill_from + one_video_frame()), _no_video); + if (!p.empty ()) { + emit_video (black_player_video_frame(), p.front().from); + filled = true; + } + } else if (_playlist->length() == DCPTime()) { + /* Special case of an empty Film; just give one black frame */ + emit_video (black_player_video_frame(), DCPTime()); + filled = true; + } + + optional audio_fill_from; + if (_last_audio_time) { + /* Fill from the last audio or seek time */ + audio_fill_from = _last_audio_time; + } + + DCPTime audio_fill_towards = fill_towards; + if (earliest && earliest->content->audio) { + audio_fill_towards += DCPTime::from_seconds (earliest->content->audio->delay() / 1000.0); + } + + if (audio_fill_from && audio_fill_from < audio_fill_towards) { + DCPTimePeriod period (*audio_fill_from, audio_fill_towards); + if (period.duration() > one_video_frame()) { + period.to = period.from + one_video_frame(); + } + list p = subtract(period, _no_audio); + if (!p.empty ()) { + fill_audio (p.front()); + filled = true; + } + } + + if (earliest) { + earliest->done = earliest->decoder->pass (); + } + + /* Emit any audio that is ready */ + + DCPTime pull_to = _playlist->length (); + for (map::const_iterator i = _stream_states.begin(); i != _stream_states.end(); ++i) { + if (!i->second.piece->done && i->second.last_push_end < pull_to) { + pull_to = i->second.last_push_end; + } + } + + list, DCPTime> > audio = _audio_merger.pull (pull_to); + for (list, DCPTime> >::iterator i = audio.begin(); i != audio.end(); ++i) { + if (_last_audio_time && i->second < *_last_audio_time) { + /* There has been an accurate seek and we have received some audio before the seek time; + discard it. + */ + pair, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time); + if (!cut.first) { + continue; + } + *i = cut; + } + + if (_last_audio_time) { + fill_audio (DCPTimePeriod (*_last_audio_time, i->second)); + } + + emit_audio (i->first, i->second); + } + + return !earliest && !filled; +} + +optional +Player::subtitles_for_frame (DCPTime time) const +{ + list subtitles; + + BOOST_FOREACH (PlayerSubtitles i, _active_subtitles.get_burnt (time, _always_burn_subtitles)) { + + /* Image subtitles */ + list c = transform_image_subtitles (i.image); + copy (c.begin(), c.end(), back_inserter (subtitles)); + + /* 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 (subtitles)); + } + } + + if (subtitles.empty ()) { + return optional (); + } + + return merge (subtitles); +} + +void +Player::video (weak_ptr wp, ContentVideo video) +{ + shared_ptr piece = wp.lock (); + if (!piece) { + return; + } + + FrameRateChange frc(piece->content->active_video_frame_rate(), _film->video_frame_rate()); + if (frc.skip && (video.frame % 2) == 1) { + return; + } + + /* Time and period of the frame we will emit */ + DCPTime const time = content_video_to_dcp (piece, video.frame); + DCPTimePeriod const period (time, time + one_video_frame()); + + /* Discard if it's outside the content's period or if it's before the last accurate seek */ + if ( + time < piece->content->position() || + time >= piece->content->end() || + (_last_video_time && time < *_last_video_time)) { + return; + } + + /* Fill gaps that we discover now that we have some video which needs to be emitted */ + + optional fill_to; + if (_last_video_time) { + fill_to = _last_video_time; + } + + if (fill_to) { + /* XXX: this may not work for 3D */ + BOOST_FOREACH (DCPTimePeriod i, subtract(DCPTimePeriod (*fill_to, time), _no_video)) { + for (DCPTime j = i.from; j < i.to; j += one_video_frame()) { + LastVideoMap::const_iterator k = _last_video.find (wp); + if (k != _last_video.end ()) { + emit_video (k->second, j); + } else { + emit_video (black_player_video_frame(), j); + } + } } } - return overlaps; + _last_video[wp].reset ( + new PlayerVideo ( + video.image, + piece->content->video->crop (), + piece->content->video->fade (video.frame), + piece->content->video->scale().size ( + piece->content->video, _video_container_size, _film->frame_size () + ), + _video_container_size, + video.eyes, + video.part, + piece->content->video->colour_conversion () + ) + ); + + emit_video (_last_video[wp], time); +} + +/** Do our common processing on some audio */ +void +Player::audio_transform (shared_ptr content, AudioStreamPtr stream, ContentAudio content_audio, DCPTime time) +{ + DCPOMATIC_ASSERT (content_audio.audio->frames() > 0); + + /* Gain */ + + if (content->gain() != 0) { + shared_ptr gain (new AudioBuffers (content_audio.audio)); + gain->apply_gain (content->gain ()); + content_audio.audio = gain; + } + + /* Remap */ + + content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping()); + + /* Process */ + + if (_audio_processor) { + content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ()); + } + + /* Push */ + + _audio_merger.push (content_audio.audio, time); + DCPOMATIC_ASSERT (_stream_states.find (stream) != _stream_states.end ()); + _stream_states[stream].last_push_end = time + DCPTime::from_frames (content_audio.audio->frames(), _film->audio_frame_rate()); } void -Player::reset_pieces () +Player::audio (weak_ptr wp, AudioStreamPtr stream, ContentAudio content_audio) { + DCPOMATIC_ASSERT (content_audio.audio->frames() > 0); + + shared_ptr piece = wp.lock (); + if (!piece) { + return; + } + + shared_ptr content = piece->content->audio; + DCPOMATIC_ASSERT (content); + + /* Compute time in the DCP */ + DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame) + DCPTime::from_seconds (content->delay() / 1000.0); + /* And the end of this block in the DCP */ + DCPTime end = time + DCPTime::from_frames(content_audio.audio->frames(), content->resampled_frame_rate()); + + /* Remove anything that comes before the start or after the end of the content */ + if (time < piece->content->position()) { + pair, DCPTime> cut = discard_audio (content_audio.audio, time, piece->content->position()); + if (!cut.first) { + /* This audio is entirely discarded */ + return; + } + content_audio.audio = cut.first; + time = cut.second; + } else if (time > piece->content->end()) { + /* Discard it all */ + return; + } else if (end > piece->content->end()) { + Frame const remaining_frames = DCPTime(piece->content->end() - time).frames_round(_film->audio_frame_rate()); + if (remaining_frames == 0) { + return; + } + shared_ptr cut (new AudioBuffers (content_audio.audio->channels(), remaining_frames)); + cut->copy_from (content_audio.audio.get(), remaining_frames, 0, 0); + content_audio.audio = cut; + } + + audio_transform (content, stream, content_audio, time); +} + +void +Player::image_subtitle_start (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); + DCPTime from (content_time_to_dcp (piece, subtitle.from())); + + _active_subtitles.add_from (wp, ps, from); +} + +void +Player::text_subtitle_start (weak_ptr wp, ContentTextSubtitle subtitle) +{ + shared_ptr piece = wp.lock (); + if (!piece) { + return; + } + + PlayerSubtitles ps; + DCPTime const from (content_time_to_dcp (piece, subtitle.from())); + + 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); + } + + s.set_in (dcp::Time(from.seconds(), 1000)); + ps.text.push_back (SubtitleString (s, piece->content->subtitle->outline_width())); + ps.add_fonts (piece->content->subtitle->fonts ()); + } + + _active_subtitles.add_from (wp, ps, from); +} + +void +Player::subtitle_stop (weak_ptr wp, ContentTime to) +{ + if (!_active_subtitles.have (wp)) { + return; + } + + shared_ptr piece = wp.lock (); + if (!piece) { + return; + } + + DCPTime const dcp_to = content_time_to_dcp (piece, to); + + pair from = _active_subtitles.add_to (wp, dcp_to); + + if (piece->content->subtitle->use() && !_always_burn_subtitles && !piece->content->subtitle->burn()) { + Subtitle (from.first, DCPTimePeriod (from.second, dcp_to)); + } +} + +void +Player::seek (DCPTime time, bool accurate) +{ + if (_audio_processor) { + _audio_processor->flush (); + } + + _audio_merger.clear (); + _active_subtitles.clear (); + BOOST_FOREACH (shared_ptr i, _pieces) { - i->decoder->reset (); + if (time < i->content->position()) { + /* Before; seek to 0 */ + i->decoder->seek (ContentTime(), accurate); + i->done = false; + } else if (i->content->position() <= time && time < i->content->end()) { + /* During; seek to position */ + i->decoder->seek (dcp_to_content_time (i, time), accurate); + i->done = false; + } else { + /* After; this piece is done */ + i->done = true; + } + } + + if (accurate) { + _last_video_time = time; + _last_audio_time = time; + } else { + _last_video_time = optional(); + _last_audio_time = optional(); + } +} + +void +Player::emit_video (shared_ptr pv, DCPTime time) +{ + optional subtitles = subtitles_for_frame (time); + if (subtitles) { + pv->set_subtitle (subtitles.get ()); + } + + Video (pv, time); + + if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) { + _last_video_time = time + one_video_frame(); + _active_subtitles.clear_before (time); + } +} + +void +Player::emit_audio (shared_ptr data, DCPTime time) +{ + Audio (data, time); + _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate ()); +} + +void +Player::fill_audio (DCPTimePeriod period) +{ + if (period.from == period.to) { + return; + } + + DCPOMATIC_ASSERT (period.from < period.to); + + BOOST_FOREACH (DCPTimePeriod i, subtract(period, _no_audio)) { + DCPTime t = i.from; + while (t < i.to) { + DCPTime block = min (DCPTime::from_seconds (0.5), i.to - t); + Frame const samples = block.frames_round(_film->audio_frame_rate()); + if (samples) { + shared_ptr silence (new AudioBuffers (_film->audio_channels(), samples)); + silence->make_silent (); + emit_audio (silence, t); + } + t += block; + } + } +} + +DCPTime +Player::one_video_frame () const +{ + return DCPTime::from_frames (1, _film->video_frame_rate ()); +} + +pair, DCPTime> +Player::discard_audio (shared_ptr audio, DCPTime time, DCPTime discard_to) const +{ + DCPTime const discard_time = discard_to - time; + Frame const discard_frames = discard_time.frames_round(_film->audio_frame_rate()); + Frame remaining_frames = audio->frames() - discard_frames; + if (remaining_frames <= 0) { + return make_pair(shared_ptr(), DCPTime()); } + shared_ptr cut (new AudioBuffers (audio->channels(), remaining_frames)); + cut->copy_from (audio.get(), remaining_frames, discard_frames, 0); + return make_pair(cut, time + discard_time); }