X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fplayer.cc;h=38c4beaae463b982b0f4e889f0e6184c47d55c9f;hb=46df210e1c25c3cdae664390efac8e60714ad635;hp=57bb0c3eefd9c18ff99ad0b24610bb1a313b7a7d;hpb=d0d4cc8626eebd75a75f5b98cf8396786e8456c0;p=dcpomatic.git diff --git a/src/lib/player.cc b/src/lib/player.cc index 57bb0c3ee..38c4beaae 100644 --- a/src/lib/player.cc +++ b/src/lib/player.cc @@ -1,5 +1,5 @@ /* - Copyright (C) 2013-2016 Carl Hetherington + Copyright (C) 2013-2018 Carl Hetherington This file is part of DCP-o-matic. @@ -28,7 +28,7 @@ #include "raw_image_proxy.h" #include "ratio.h" #include "log.h" -#include "render_subtitles.h" +#include "render_text.h" #include "config.h" #include "content_video.h" #include "player_video.h" @@ -40,17 +40,19 @@ #include "decoder.h" #include "video_decoder.h" #include "audio_decoder.h" -#include "subtitle_content.h" -#include "subtitle_decoder.h" +#include "text_content.h" +#include "text_decoder.h" #include "ffmpeg_content.h" #include "audio_content.h" -#include "content_subtitle.h" #include "dcp_decoder.h" #include "image_decoder.h" +#include "compose.hpp" +#include "shuffler.h" #include #include #include #include +#include #include #include #include @@ -58,8 +60,6 @@ #include "i18n.h" -#define LOG_GENERAL(...) _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_GENERAL); - using std::list; using std::cout; using std::min; @@ -76,55 +76,85 @@ 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); -} +int const PlayerProperty::VIDEO_CONTAINER_SIZE = 700; +int const PlayerProperty::PLAYLIST = 701; +int const PlayerProperty::FILM_CONTAINER = 702; +int const PlayerProperty::FILM_VIDEO_FRAME_RATE = 703; +int const PlayerProperty::DCP_DECODE_REDUCTION = 704; Player::Player (shared_ptr film, shared_ptr playlist) : _film (film) , _playlist (playlist) - , _have_valid_pieces (false) + , _suspended (false) , _ignore_video (false) , _ignore_audio (false) - , _always_burn_subtitles (false) + , _ignore_text (false) + , _always_burn_open_subtitles (false) , _fast (false) , _play_referenced (false) + , _audio_merger (_film->audio_frame_rate()) + , _shuffler (0) { - _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)); + _film_changed_connection = _film->Change.connect (bind (&Player::film_change, this, _1, _2)); + /* The butler must hear about this first, so since we are proxying this through to the butler we must + be first. + */ + _playlist_change_connection = _playlist->Change.connect (bind (&Player::playlist_change, this, _1), boost::signals2::at_front); + _playlist_content_change_connection = _playlist->ContentChange.connect (bind(&Player::playlist_content_change, this, _1, _3, _4)); set_video_container_size (_film->frame_size ()); - film_changed (Film::AUDIO_PROCESSOR); + film_change (CHANGE_TYPE_DONE, Film::AUDIO_PROCESSOR); + + setup_pieces (); + seek (DCPTime (), true); +} + +Player::~Player () +{ + delete _shuffler; } void Player::setup_pieces () +{ + boost::mutex::scoped_lock lm (_mutex); + setup_pieces_unlocked (); +} + +bool +have_video (shared_ptr piece) +{ + return piece->decoder && piece->decoder->video; +} + +bool +have_audio (shared_ptr piece) +{ + return piece->decoder && piece->decoder->audio; +} + +void +Player::setup_pieces_unlocked () { _pieces.clear (); + delete _shuffler; + _shuffler = new Shuffler(); + _shuffler->Video.connect(bind(&Player::video, this, _1, _2)); + BOOST_FOREACH (shared_ptr i, _playlist->content ()) { if (!i->paths_valid ()) { continue; } - shared_ptr decoder = decoder_factory (i, _film->log()); - FrameRateChange frc (i->active_video_frame_rate(), _film->video_frame_rate()); + if (_ignore_video && _ignore_audio && i->text.empty()) { + /* We're only interested in text and this content has none */ + continue; + } + + shared_ptr decoder = decoder_factory (_film, i, _fast); + FrameRateChange frc (_film, i); if (!decoder) { /* Not something that we can decode; e.g. Atmos content */ @@ -132,108 +162,133 @@ Player::setup_pieces () } if (decoder->video && _ignore_video) { - decoder->video->set_ignore (); + decoder->video->set_ignore (true); } if (decoder->audio && _ignore_audio) { - decoder->audio->set_ignore (); + decoder->audio->set_ignore (true); } - if (decoder->audio && _fast) { - decoder->audio->set_fast (); + if (_ignore_text) { + BOOST_FOREACH (shared_ptr i, decoder->text) { + i->set_ignore (true); + } } shared_ptr dcp = dynamic_pointer_cast (decoder); - if (dcp && _play_referenced) { - dcp->set_decode_referenced (); + if (dcp) { + dcp->set_decode_referenced (_play_referenced); + if (_play_referenced) { + dcp->set_forced_reduction (_dcp_decode_reduction); + } } - _pieces.push_back (shared_ptr (new Piece (i, decoder, frc))); - } + shared_ptr piece (new Piece (i, decoder, frc)); + _pieces.push_back (piece); - _have_valid_pieces = true; -} + if (decoder->video) { + if (i->video->frame_type() == VIDEO_FRAME_TYPE_3D_LEFT || i->video->frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) { + /* We need a Shuffler to cope with 3D L/R video data arriving out of sequence */ + decoder->video->Data.connect (bind (&Shuffler::video, _shuffler, weak_ptr(piece), _1)); + } else { + decoder->video->Data.connect (bind (&Player::video, this, weak_ptr(piece), _1)); + } + } -void -Player::playlist_content_changed (weak_ptr w, int property, bool frequent) -{ - shared_ptr c = w.lock (); - if (!c) { - return; - } + if (decoder->audio) { + decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr (piece), _1, _2)); + } - if ( - property == ContentProperty::POSITION || - property == ContentProperty::LENGTH || - property == ContentProperty::TRIM_START || - property == ContentProperty::TRIM_END || - property == ContentProperty::PATH || - property == VideoContentProperty::FRAME_TYPE || - property == DCPContentProperty::NEEDS_ASSETS || - property == DCPContentProperty::NEEDS_KDM || - property == SubtitleContentProperty::COLOUR || - property == SubtitleContentProperty::OUTLINE || - property == SubtitleContentProperty::SHADOW || - property == SubtitleContentProperty::EFFECT_COLOUR || - property == FFmpegContentProperty::SUBTITLE_STREAM || - property == VideoContentProperty::COLOUR_CONVERSION - ) { + list >::const_iterator j = decoder->text.begin(); + + while (j != decoder->text.end()) { + (*j)->BitmapStart.connect ( + bind(&Player::bitmap_text_start, this, weak_ptr(piece), weak_ptr((*j)->content()), _1) + ); + (*j)->PlainStart.connect ( + bind(&Player::plain_text_start, this, weak_ptr(piece), weak_ptr((*j)->content()), _1) + ); + (*j)->Stop.connect ( + bind(&Player::subtitle_stop, this, weak_ptr(piece), weak_ptr((*j)->content()), _1) + ); - _have_valid_pieces = false; - Changed (frequent); + ++j; + } + } - } else if ( - property == SubtitleContentProperty::LINE_SPACING || - property == SubtitleContentProperty::OUTLINE_WIDTH || - property == SubtitleContentProperty::Y_SCALE || - property == SubtitleContentProperty::FADE_IN || - property == SubtitleContentProperty::FADE_OUT - ) { + _stream_states.clear (); + 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 ()); + } + } + } - /* 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. - */ + _black = Empty (_film, _pieces, bind(&have_video, _1)); + _silent = Empty (_film, _pieces, bind(&have_audio, _1)); - reset_pieces (); - Changed (frequent); - - } else if ( - property == ContentProperty::VIDEO_FRAME_RATE || - property == SubtitleContentProperty::USE || - property == SubtitleContentProperty::X_OFFSET || - property == SubtitleContentProperty::Y_OFFSET || - property == SubtitleContentProperty::X_SCALE || - property == SubtitleContentProperty::FONTS || - property == VideoContentProperty::CROP || - property == VideoContentProperty::SCALE || - property == VideoContentProperty::FADE_IN || - property == VideoContentProperty::FADE_OUT - ) { + _last_video_time = DCPTime (); + _last_video_eyes = EYES_BOTH; + _last_audio_time = DCPTime (); +} - Changed (frequent); +void +Player::playlist_content_change (ChangeType type, int property, bool frequent) +{ + if (type == CHANGE_TYPE_PENDING) { + boost::mutex::scoped_lock lm (_mutex); + /* The player content is probably about to change, so we can't carry on + until that has happened and we've rebuilt our pieces. Stop pass() + and seek() from working until then. + */ + _suspended = true; + } else if (type == CHANGE_TYPE_DONE) { + /* A change in our content has gone through. Re-build our pieces. */ + setup_pieces (); + _suspended = false; + } else if (type == CHANGE_TYPE_CANCELLED) { + boost::mutex::scoped_lock lm (_mutex); + _suspended = false; } + + Change (type, property, frequent); } void Player::set_video_container_size (dcp::Size s) { - _video_container_size = s; + Change (CHANGE_TYPE_PENDING, PlayerProperty::VIDEO_CONTAINER_SIZE, false); + + { + boost::mutex::scoped_lock lm (_mutex); - _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true)); - _black_image->make_black (); + if (s == _video_container_size) { + lm.unlock (); + Change (CHANGE_TYPE_CANCELLED, PlayerProperty::VIDEO_CONTAINER_SIZE, false); + return; + } + + _video_container_size = s; + + _black_image.reset (new Image (AV_PIX_FMT_RGB24, _video_container_size, true)); + _black_image->make_black (); + } + + Change (CHANGE_TYPE_DONE, PlayerProperty::VIDEO_CONTAINER_SIZE, false); } void -Player::playlist_changed () +Player::playlist_change (ChangeType type) { - _have_valid_pieces = false; - Changed (false); + if (type == CHANGE_TYPE_DONE) { + setup_pieces (); + } + Change (type, PlayerProperty::PLAYLIST, false); } void -Player::film_changed (Film::Property p) +Player::film_change (ChangeType type, Film::Property p) { /* Here we should notice Film properties that affect our output, and alert listeners that our output now would be different to how it was @@ -241,572 +296,905 @@ Player::film_changed (Film::Property p) */ if (p == Film::CONTAINER) { - Changed (false); + Change (type, PlayerProperty::FILM_CONTAINER, 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); + if (type == CHANGE_TYPE_DONE) { + setup_pieces (); + } + Change (type, PlayerProperty::FILM_VIDEO_FRAME_RATE, false); } else if (p == Film::AUDIO_PROCESSOR) { - if (_film->audio_processor ()) { + if (type == CHANGE_TYPE_DONE && _film->audio_processor ()) { + boost::mutex::scoped_lock lm (_mutex); _audio_processor = _film->audio_processor()->clone (_film->audio_frame_rate ()); } - } -} - -list -Player::transform_image_subtitles (list subs) const -{ - list all; - - for (list::const_iterator i = subs.begin(); i != subs.end(); ++i) { - if (!i->image) { - continue; + } else if (p == Film::AUDIO_CHANNELS) { + if (type == CHANGE_TYPE_DONE) { + boost::mutex::scoped_lock lm (_mutex); + _audio_merger.clear (); } - - /* 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 - * rect.x * _video_container_size.width and rect.y * _video_container_size.height. - * - * 2. that to shift the origin of the scale by subtitle_scale to the centre of the subtitle; this will be - * (width_before_subtitle_scale * (1 - subtitle_x_scale) / 2) and - * (height_before_subtitle_scale * (1 - subtitle_y_scale) / 2). - * - * Combining these two translations gives these expressions. - */ - - all.push_back ( - PositionImage ( - i->image->scale ( - scaled_size, - dcp::YUV_TO_RGB_REC601, - i->image->pixel_format (), - true, - _fast - ), - Position ( - lrint (_video_container_size.width * i->rectangle.x), - lrint (_video_container_size.height * i->rectangle.y) - ) - ) - ); } - - return all; } shared_ptr -Player::black_player_video_frame (DCPTime time) const +Player::black_player_video_frame (Eyes eyes) const { return shared_ptr ( new PlayerVideo ( shared_ptr (new RawImageProxy (_black_image)), - time, Crop (), optional (), _video_container_size, _video_container_size, - EYES_BOTH, + eyes, PART_WHOLE, - PresetColourConversion::all().front().conversion + PresetColourConversion::all().front().conversion, + boost::weak_ptr(), + boost::optional() ) ); } -/** @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) +Frame +Player::dcp_to_content_video (shared_ptr piece, DCPTime t) const { - if (!_have_valid_pieces) { - setup_pieces (); - } + DCPTime s = t - piece->content->position (); + s = min (piece->content->length_after_trim(_film), s); + s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc)); - /* Find subtitles for possible burn-in */ + /* 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 piece, Frame f) const +{ + /* 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 d + piece->content->position(); +} - PlayerSubtitles ps = get_subtitles (time, DCPTime::from_frames (1, _film->video_frame_rate ()), false, true, accurate); +Frame +Player::dcp_to_resampled_audio (shared_ptr piece, DCPTime t) const +{ + DCPTime s = t - piece->content->position (); + s = min (piece->content->length_after_trim(_film), 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 ()); +} + +DCPTime +Player::resampled_audio_to_dcp (shared_ptr piece, Frame f) const +{ + /* See comment in dcp_to_content_video */ + return DCPTime::from_frames (f, _film->audio_frame_rate()) + - DCPTime (piece->content->trim_start(), piece->frc) + + piece->content->position(); +} + +ContentTime +Player::dcp_to_content_time (shared_ptr piece, DCPTime t) const +{ + DCPTime s = t - piece->content->position (); + s = min (piece->content->length_after_trim(_film), s); + return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start()); +} - list sub_images; +DCPTime +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()); +} - /* Image subtitles */ - list c = transform_image_subtitles (ps.image); - copy (c.begin(), c.end(), back_inserter (sub_images)); +list > +Player::get_subtitle_fonts () +{ + boost::mutex::scoped_lock lm (_mutex); - /* 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)); + list > fonts; + BOOST_FOREACH (shared_ptr i, _pieces) { + BOOST_FOREACH (shared_ptr j, i->content->text) { + /* XXX: things may go wrong if there are duplicate font IDs + with different font files. + */ + list > f = j->fonts (); + copy (f.begin(), f.end(), back_inserter (fonts)); + } } - optional subtitles; - if (!sub_images.empty ()) { - subtitles = merge (sub_images); + return fonts; +} + +/** Set this player never to produce any video data */ +void +Player::set_ignore_video () +{ + boost::mutex::scoped_lock lm (_mutex); + _ignore_video = true; + setup_pieces_unlocked (); +} + +void +Player::set_ignore_audio () +{ + boost::mutex::scoped_lock lm (_mutex); + _ignore_audio = true; + setup_pieces_unlocked (); +} + +void +Player::set_ignore_text () +{ + boost::mutex::scoped_lock lm (_mutex); + _ignore_text = true; + setup_pieces_unlocked (); +} + +/** Set the player to always burn open texts into the image regardless of the content settings */ +void +Player::set_always_burn_open_subtitles () +{ + boost::mutex::scoped_lock lm (_mutex); + _always_burn_open_subtitles = true; +} + +/** Sets up the player to be faster, possibly at the expense of quality */ +void +Player::set_fast () +{ + boost::mutex::scoped_lock lm (_mutex); + _fast = true; + setup_pieces_unlocked (); +} + +void +Player::set_play_referenced () +{ + boost::mutex::scoped_lock lm (_mutex); + _play_referenced = true; + setup_pieces_unlocked (); +} + +static void +maybe_add_asset (list& a, shared_ptr r, Frame reel_trim_start, Frame reel_trim_end, DCPTime from, int const ffr) +{ + DCPOMATIC_ASSERT (r); + r->set_entry_point (r->entry_point() + reel_trim_start); + r->set_duration (r->duration() - reel_trim_start - reel_trim_end); + if (r->duration() > 0) { + a.push_back ( + ReferencedReelAsset(r, DCPTimePeriod(from, from + DCPTime::from_frames(r->duration(), ffr))) + ); } +} - /* Find pieces containing video which is happening now */ +list +Player::get_reel_assets () +{ + /* Does not require a lock on _mutex as it's only called from DCPEncoder */ - list > ov = overlaps ( - time, - time + DCPTime::from_frames (1, _film->video_frame_rate ()), - &has_video - ); + list a; - list > pvf; + BOOST_FOREACH (shared_ptr i, _playlist->content ()) { + shared_ptr j = dynamic_pointer_cast (i); + if (!j) { + continue; + } - 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 (); + scoped_ptr decoder; + try { + decoder.reset (new DCPDecoder (_film, j, false)); + } catch (...) { + return a; + } - /* Get video from appropriate piece(s) */ - BOOST_FOREACH (shared_ptr piece, ov) { + 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 (); - shared_ptr decoder = piece->decoder->video; - DCPOMATIC_ASSERT (decoder); + /* position in the asset from the start */ + int64_t offset_from_start = 0; + /* position in the asset from the end */ + int64_t offset_from_end = 0; + BOOST_FOREACH (shared_ptr k, decoder->reels()) { + /* Assume that main picture duration is the length of the reel */ + offset_from_end += k->main_picture()->duration(); + } - shared_ptr dcp_content = dynamic_pointer_cast (piece->content); - if (dcp_content && dcp_content->reference_video () && !_play_referenced) { - continue; + BOOST_FOREACH (shared_ptr k, decoder->reels()) { + + /* Assume that main picture duration is the length of the reel */ + int64_t const reel_duration = k->main_picture()->duration(); + + /* See doc/design/trim_reels.svg */ + Frame const reel_trim_start = min(reel_duration, max(int64_t(0), trim_start - offset_from_start)); + Frame const reel_trim_end = min(reel_duration, max(int64_t(0), reel_duration - (offset_from_end - trim_end))); + + DCPTime const from = i->position() + DCPTime::from_frames (offset_from_start, _film->video_frame_rate()); + if (j->reference_video ()) { + maybe_add_asset (a, k->main_picture(), reel_trim_start, reel_trim_end, from, ffr); } - 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 () - ) - ) - ); - } + if (j->reference_audio ()) { + maybe_add_asset (a, k->main_sound(), reel_trim_start, reel_trim_end, from, ffr); + } + + if (j->reference_text (TEXT_OPEN_SUBTITLE)) { + maybe_add_asset (a, k->main_subtitle(), reel_trim_start, reel_trim_end, from, ffr); + } + + if (j->reference_text (TEXT_CLOSED_CAPTION)) { + BOOST_FOREACH (shared_ptr l, k->closed_captions()) { + maybe_add_asset (a, l, reel_trim_start, reel_trim_end, from, ffr); } - } 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 ()); + offset_from_start += reel_duration; + offset_from_end -= reel_duration; } } - return pvf; + return a; } -/** @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) +bool +Player::pass () { - if (!_have_valid_pieces) { - setup_pieces (); + boost::mutex::scoped_lock lm (_mutex); + + if (_suspended) { + /* We can't pass in this state */ + return false; } - Frame const length_frames = length.frames_round (_film->audio_frame_rate ()); + if (_playlist->length(_film) == DCPTime()) { + /* Special case of an empty Film; just give one black frame */ + emit_video (black_player_video_frame(EYES_BOTH), DCPTime()); + return true; + } - shared_ptr audio (new AudioBuffers (_film->audio_channels(), length_frames)); - audio->make_silent (); + /* Find the decoder or empty which is farthest behind where we are and make it emit some data */ - list > ov = overlaps (time, time + length, has_audio); - if (ov.empty ()) { - return audio; - } + shared_ptr earliest_content; + optional earliest_time; + + BOOST_FOREACH (shared_ptr i, _pieces) { + if (i->done) { + continue; + } - 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; + DCPTime const t = content_time_to_dcp (i, max(i->decoder->position(), i->content->trim_start())); + if (t > i->content->end(_film)) { + i->done = true; + } else { + + /* Given two choices at the same time, pick the one with texts so we see it before + the video. + */ + if (!earliest_time || t < *earliest_time || (t == *earliest_time && !i->decoder->text.empty())) { + earliest_time = t; + earliest_content = i; + } } } - if (all_referenced && !_play_referenced) { - return shared_ptr (); + bool done = false; + + enum { + NONE, + CONTENT, + BLACK, + SILENT + } which = NONE; + + if (earliest_content) { + which = CONTENT; } - BOOST_FOREACH (shared_ptr i, ov) { + if (!_black.done() && (!earliest_time || _black.position() < *earliest_time)) { + earliest_time = _black.position (); + which = BLACK; + } - DCPOMATIC_ASSERT (i->content->audio); - shared_ptr decoder = i->decoder->audio; - DCPOMATIC_ASSERT (decoder); + if (!_silent.done() && (!earliest_time || _silent.position() < *earliest_time)) { + earliest_time = _silent.position (); + which = SILENT; + } - /* 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. + switch (which) { + case CONTENT: + { + earliest_content->done = earliest_content->decoder->pass (); + shared_ptr dcp = dynamic_pointer_cast(earliest_content->content); + if (dcp && !_play_referenced && dcp->reference_audio()) { + /* We are skipping some referenced DCP audio content, so we need to update _last_audio_time + to `hide' the fact that no audio was emitted during the referenced DCP (though + we need to behave as though it was). */ - offset = -request; - request_frames += request.frames_round (_film->audio_frame_rate ()); - if (request_frames < 0) { - request_frames = 0; - } - request = DCPTime (); + _last_audio_time = dcp->end (_film); + } + break; + } + case BLACK: + emit_video (black_player_video_frame(EYES_BOTH), _black.position()); + _black.set_position (_black.position() + one_video_frame()); + break; + case SILENT: + { + DCPTimePeriod period (_silent.period_at_position()); + if (_last_audio_time) { + /* Sometimes the thing that happened last finishes fractionally before + or after this silence. Bodge the start time of the silence to fix it. + */ + DCPOMATIC_ASSERT (labs(period.from.get() - _last_audio_time->get()) < 2); + period.from = *_last_audio_time; + } + if (period.duration() > one_video_frame()) { + period.to = period.from + one_video_frame(); } + fill_audio (period); + _silent.set_position (period.to); + break; + } + case NONE: + done = true; + break; + } - Frame const content_frame = dcp_to_resampled_audio (i, request); + /* Emit any audio that is ready */ - BOOST_FOREACH (AudioStreamPtr j, i->content->audio->streams ()) { + /* Work out the time before which the audio is definitely all here. This is the earliest last_push_end of one + of our streams, or the position of the _silent. + */ + DCPTime pull_to = _film->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; + } + } + if (!_silent.done() && _silent.position() < pull_to) { + pull_to = _silent.position(); + } - if (j->channels() == 0) { - /* Some content (e.g. DCPs) can have streams with no channels */ + 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) { + /* This new data comes before the last we emitted (or the last seek); discard it */ + pair, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time); + if (!cut.first) { continue; } + *i = cut; + } else if (_last_audio_time && i->second > *_last_audio_time) { + /* There's a gap between this data and the last we emitted; fill with silence */ + fill_audio (DCPTimePeriod (*_last_audio_time, i->second)); + } - /* 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); + emit_audio (i->first, i->second); + } - /* Gain */ - if (i->content->audio->gain() != 0) { - shared_ptr gain (new AudioBuffers (all.audio)); - gain->apply_gain (i->content->audio->gain ()); - all.audio = gain; - } + if (done) { + _shuffler->flush (); + for (list, DCPTime> >::const_iterator i = _delay.begin(); i != _delay.end(); ++i) { + do_emit_video(i->first, i->second); + } + } - /* 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) - ); - } - } - } + return done; +} - if (_audio_processor) { - dcp_mapped = _audio_processor->run (dcp_mapped, _film->audio_channels ()); +/** @return Open subtitles for the frame at the given time, converted to images */ +optional +Player::open_subtitles_for_frame (DCPTime time) const +{ + list captions; + int const vfr = _film->video_frame_rate(); + + BOOST_FOREACH ( + PlayerText j, + _active_texts[TEXT_OPEN_SUBTITLE].get_burnt(DCPTimePeriod(time, time + DCPTime::from_frames(1, vfr)), _always_burn_open_subtitles) + ) { + + /* Bitmap subtitles */ + BOOST_FOREACH (BitmapText i, j.bitmap) { + if (!i.image) { + continue; } - all.audio = dcp_mapped; + /* i.image will already have been scaled to fit _video_container_size */ + dcp::Size scaled_size (i.rectangle.width * _video_container_size.width, i.rectangle.height * _video_container_size.height); - audio->accumulate_frames ( - all.audio.get(), - content_frame - all.frame, - offset.frames_round (_film->audio_frame_rate()), - min (Frame (all.audio->frames()), request_frames) + captions.push_back ( + PositionImage ( + i.image, + Position ( + lrint (_video_container_size.width * i.rectangle.x), + lrint (_video_container_size.height * i.rectangle.y) + ) + ) ); } + + /* String subtitles (rendered to an image) */ + if (!j.string.empty ()) { + list s = render_text (j.string, j.fonts, _video_container_size, time, vfr); + copy (s.begin(), s.end(), back_inserter (captions)); + } + } + + if (captions.empty ()) { + return optional (); } - return audio; + return merge (captions); } -Frame -Player::dcp_to_content_video (shared_ptr piece, DCPTime t) const +void +Player::video (weak_ptr wp, ContentVideo video) { - DCPTime s = t - piece->content->position (); - s = min (piece->content->length_after_trim(), s); - s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc)); + shared_ptr piece = wp.lock (); + if (!piece) { + return; + } - /* 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). + FrameRateChange frc (_film, piece->content); + if (frc.skip && (video.frame % 2) == 1) { + return; + } - Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat. + /* Time of the first frame we will emit */ + DCPTime const time = content_video_to_dcp (piece, video.frame); + + /* Discard if it's before the content's period or the last accurate seek. We can't discard + if it's after the content's period here as in that case we still need to fill any gap between + `now' and the end of the content's period. */ - return s.frames_floor (piece->frc.dcp) / piece->frc.factor (); -} + if (time < piece->content->position() || (_last_video_time && time < *_last_video_time)) { + return; + } -DCPTime -Player::content_video_to_dcp (shared_ptr piece, Frame f) const -{ - /* 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 ()); -} + /* Fill gaps that we discover now that we have some video which needs to be emitted. + This is where we need to fill to. + */ + DCPTime fill_to = min (time, piece->content->end(_film)); + + if (_last_video_time) { + DCPTime fill_from = max (*_last_video_time, piece->content->position()); + + /* Fill if we have more than half a frame to do */ + if ((fill_to - fill_from) > one_video_frame() / 2) { + LastVideoMap::const_iterator last = _last_video.find (wp); + if (_film->three_d()) { + Eyes fill_to_eyes = video.eyes; + if (fill_to_eyes == EYES_BOTH) { + fill_to_eyes = EYES_LEFT; + } + if (fill_to == piece->content->end(_film)) { + /* Don't fill after the end of the content */ + fill_to_eyes = EYES_LEFT; + } + DCPTime j = fill_from; + Eyes eyes = _last_video_eyes.get_value_or(EYES_LEFT); + if (eyes == EYES_BOTH) { + eyes = EYES_LEFT; + } + while (j < fill_to || eyes != fill_to_eyes) { + if (last != _last_video.end()) { + shared_ptr copy = last->second->shallow_copy(); + copy->set_eyes (eyes); + emit_video (copy, j); + } else { + emit_video (black_player_video_frame(eyes), j); + } + if (eyes == EYES_RIGHT) { + j += one_video_frame(); + } + eyes = increment_eyes (eyes); + } + } else { + for (DCPTime j = fill_from; j < fill_to; j += one_video_frame()) { + if (last != _last_video.end()) { + emit_video (last->second, j); + } else { + emit_video (black_player_video_frame(EYES_BOTH), j); + } + } + } + } + } -Frame -Player::dcp_to_resampled_audio (shared_ptr piece, DCPTime t) const -{ - DCPTime s = t - piece->content->position (); - 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 ()); -} + _last_video[wp].reset ( + new PlayerVideo ( + video.image, + piece->content->video->crop (), + piece->content->video->fade (_film, 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(), + piece->content, + video.frame + ) + ); -ContentTime -Player::dcp_to_content_subtitle (shared_ptr piece, DCPTime t) const -{ - DCPTime s = t - piece->content->position (); - s = min (piece->content->length_after_trim(), s); - return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start()); + DCPTime t = time; + for (int i = 0; i < frc.repeat; ++i) { + if (t < piece->content->end(_film)) { + emit_video (_last_video[wp], t); + } + t += one_video_frame (); + } } -DCPTime -Player::content_subtitle_to_dcp (shared_ptr piece, ContentTime t) const +void +Player::audio (weak_ptr wp, AudioStreamPtr stream, ContentAudio content_audio) { - return max (DCPTime (), DCPTime (t - piece->content->trim_start(), piece->frc) + piece->content->position()); -} + DCPOMATIC_ASSERT (content_audio.audio->frames() > 0); -/** @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); + shared_ptr piece = wp.lock (); + if (!piece) { + return; + } - PlayerSubtitles ps (time); + shared_ptr content = piece->content->audio; + DCPOMATIC_ASSERT (content); - 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; - } + /* Compute time in the DCP */ + DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame); + /* And the end of this block in the DCP */ + DCPTime end = time + DCPTime::from_frames(content_audio.audio->frames(), content->resampled_frame_rate(_film)); - shared_ptr dcp_content = dynamic_pointer_cast ((*j)->content); - if (dcp_content && dcp_content->reference_subtitle () && !_play_referenced) { - continue; + /* 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(_film)) { + /* Discard it all */ + return; + } else if (end > piece->content->end(_film)) { + Frame const remaining_frames = DCPTime(piece->content->end(_film) - 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; + } - 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 ()); + DCPOMATIC_ASSERT (content_audio.audio->frames() > 0); - list image = subtitle_decoder->get_image (ContentTimePeriod (from, to), starting, accurate); - for (list::iterator i = image.begin(); i != image.end(); ++i) { + /* Gain */ - /* Apply content's subtitle offsets */ - i->sub.rectangle.x += (*j)->content->subtitle->x_offset (); - i->sub.rectangle.y += (*j)->content->subtitle->y_offset (); + if (content->gain() != 0) { + shared_ptr gain (new AudioBuffers (content_audio.audio)); + gain->apply_gain (content->gain ()); + content_audio.audio = gain; + } - /* Apply content's subtitle scale */ - i->sub.rectangle.width *= (*j)->content->subtitle->x_scale (); - i->sub.rectangle.height *= (*j)->content->subtitle->y_scale (); + /* Remap */ - /* 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); + content_audio.audio = remap (content_audio.audio, _film->audio_channels(), stream->mapping()); - ps.image.push_back (i->sub); - } + /* Process */ - 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(); + if (_audio_processor) { + content_audio.audio = _audio_processor->run (content_audio.audio, _film->audio_channels ()); + } - /* 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); + /* Push */ - /* 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 ()); - } - } + _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::bitmap_text_start (weak_ptr wp, weak_ptr wc, ContentBitmapText subtitle) +{ + shared_ptr piece = wp.lock (); + shared_ptr text = wc.lock (); + if (!piece || !text) { + return; } - return ps; + /* Apply content's subtitle offsets */ + subtitle.sub.rectangle.x += text->x_offset (); + subtitle.sub.rectangle.y += text->y_offset (); + + /* Apply a corrective translation to keep the subtitle centred after the scale that is coming up */ + subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * ((text->x_scale() - 1) / 2); + subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * ((text->y_scale() - 1) / 2); + + /* Apply content's subtitle scale */ + subtitle.sub.rectangle.width *= text->x_scale (); + subtitle.sub.rectangle.height *= text->y_scale (); + + PlayerText ps; + shared_ptr image = subtitle.sub.image; + /* We will scale the subtitle up to fit _video_container_size */ + dcp::Size scaled_size (subtitle.sub.rectangle.width * _video_container_size.width, subtitle.sub.rectangle.height * _video_container_size.height); + ps.bitmap.push_back (BitmapText(image->scale(scaled_size, dcp::YUV_TO_RGB_REC601, image->pixel_format(), true, _fast), subtitle.sub.rectangle)); + DCPTime from (content_time_to_dcp (piece, subtitle.from())); + + _active_texts[text->type()].add_from (wc, ps, from); } -list > -Player::get_subtitle_fonts () +void +Player::plain_text_start (weak_ptr wp, weak_ptr wc, ContentStringText subtitle) { - if (!_have_valid_pieces) { - setup_pieces (); + shared_ptr piece = wp.lock (); + shared_ptr text = wc.lock (); + if (!piece || !text) { + return; } - list > fonts; - BOOST_FOREACH (shared_ptr& p, _pieces) { - if (p->content->subtitle) { - /* XXX: things may go wrong if there are duplicate font IDs - with different font files. - */ - list > f = p->content->subtitle->fonts (); - copy (f.begin(), f.end(), back_inserter (fonts)); + PlayerText ps; + DCPTime const from (content_time_to_dcp (piece, subtitle.from())); + + if (from > piece->content->end(_film)) { + return; + } + + BOOST_FOREACH (dcp::SubtitleString s, subtitle.subs) { + s.set_h_position (s.h_position() + text->x_offset ()); + s.set_v_position (s.v_position() + text->y_offset ()); + float const xs = text->x_scale(); + float const ys = text->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.string.push_back (StringText (s, text->outline_width())); + ps.add_fonts (text->fonts ()); } - return fonts; + _active_texts[text->type()].add_from (wc, ps, from); } -/** Set this player never to produce any video data */ void -Player::set_ignore_video () +Player::subtitle_stop (weak_ptr wp, weak_ptr wc, ContentTime to) { - _ignore_video = true; + shared_ptr text = wc.lock (); + if (!text) { + return; + } + + if (!_active_texts[text->type()].have(wc)) { + return; + } + + shared_ptr piece = wp.lock (); + if (!piece) { + return; + } + + DCPTime const dcp_to = content_time_to_dcp (piece, to); + + if (dcp_to > piece->content->end(_film)) { + return; + } + + pair from = _active_texts[text->type()].add_to (wc, dcp_to); + + bool const always = (text->type() == TEXT_OPEN_SUBTITLE && _always_burn_open_subtitles); + if (text->use() && !always && !text->burn()) { + Text (from.first, text->type(), text->dcp_track().get_value_or(DCPTextTrack()), DCPTimePeriod (from.second, dcp_to)); + } } -/** Set this player never to produce any audio data */ void -Player::set_ignore_audio () +Player::seek (DCPTime time, bool accurate) { - _ignore_audio = true; + boost::mutex::scoped_lock lm (_mutex); + + if (_suspended) { + /* We can't seek in this state */ + return; + } + + if (_shuffler) { + _shuffler->clear (); + } + + _delay.clear (); + + if (_audio_processor) { + _audio_processor->flush (); + } + + _audio_merger.clear (); + for (int i = 0; i < TEXT_COUNT; ++i) { + _active_texts[i].clear (); + } + + BOOST_FOREACH (shared_ptr i, _pieces) { + if (time < i->content->position()) { + /* Before; seek to the start of the content */ + i->decoder->seek (dcp_to_content_time (i, i->content->position()), accurate); + i->done = false; + } else if (i->content->position() <= time && time < i->content->end(_film)) { + /* 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_video_eyes = EYES_LEFT; + _last_audio_time = time; + } else { + _last_video_time = optional(); + _last_video_eyes = optional(); + _last_audio_time = optional(); + } + + _black.set_position (time); + _silent.set_position (time); + + _last_video.clear (); } -/** 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) +Player::emit_video (shared_ptr pv, DCPTime time) { - _always_burn_subtitles = burn; + /* We need a delay to give a little wiggle room to ensure that relevent subtitles arrive at the + player before the video that requires them. + */ + _delay.push_back (make_pair (pv, time)); + + if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) { + _last_video_time = time + one_video_frame(); + } + _last_video_eyes = increment_eyes (pv->eyes()); + + if (_delay.size() < 3) { + return; + } + + pair, DCPTime> to_do = _delay.front(); + _delay.pop_front(); + do_emit_video (to_do.first, to_do.second); } void -Player::set_fast () +Player::do_emit_video (shared_ptr pv, DCPTime time) { - _fast = true; - _have_valid_pieces = false; + if (pv->eyes() == EYES_BOTH || pv->eyes() == EYES_RIGHT) { + for (int i = 0; i < TEXT_COUNT; ++i) { + _active_texts[i].clear_before (time); + } + } + + optional subtitles = open_subtitles_for_frame (time); + if (subtitles) { + pv->set_text (subtitles.get ()); + } + + Video (pv, time); } void -Player::set_play_referenced () +Player::emit_audio (shared_ptr data, DCPTime time) { - _play_referenced = true; - _have_valid_pieces = false; + /* Log if the assert below is about to fail */ + if (_last_audio_time && labs(time.get() - _last_audio_time->get()) > 1) { + _film->log()->log(String::compose("Out-of-sequence emit %1 vs %2", to_string(time), to_string(*_last_audio_time)), LogEntry::TYPE_WARNING); + } + + /* This audio must follow on from the previous, allowing for half a sample (at 48kHz) leeway */ + DCPOMATIC_ASSERT (!_last_audio_time || labs(time.get() - _last_audio_time->get()) < 2); + Audio (data, time, _film->audio_frame_rate()); + _last_audio_time = time + DCPTime::from_frames (data->frames(), _film->audio_frame_rate()); } -list -Player::get_reel_assets () +void +Player::fill_audio (DCPTimePeriod period) { - list a; + if (period.from == period.to) { + return; + } - BOOST_FOREACH (shared_ptr i, _playlist->content ()) { - shared_ptr j = dynamic_pointer_cast (i); - if (!j) { - continue; - } + DCPOMATIC_ASSERT (period.from < period.to); - scoped_ptr decoder; - try { - decoder.reset (new DCPDecoder (j, _film->log())); - } catch (...) { - return a; + DCPTime t = period.from; + while (t < period.to) { + DCPTime block = min (DCPTime::from_seconds (0.5), period.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; + } +} - 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 +Player::one_video_frame () const +{ + return DCPTime::from_frames (1, _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 (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr))) - ); - } +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); +} - 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 (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr))) - ); - } +void +Player::set_dcp_decode_reduction (optional reduction) +{ + Change (CHANGE_TYPE_PENDING, PlayerProperty::DCP_DECODE_REDUCTION, false); - if (j->reference_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 (ra, DCPTimePeriod (from, from + DCPTime::from_frames (ra->duration(), ffr))) - ); - } + { + boost::mutex::scoped_lock lm (_mutex); - /* Assume that main picture duration is the length of the reel */ - offset += k->main_picture()->duration (); + if (reduction == _dcp_decode_reduction) { + lm.unlock (); + Change (CHANGE_TYPE_CANCELLED, PlayerProperty::DCP_DECODE_REDUCTION, false); + return; } + + _dcp_decode_reduction = reduction; + setup_pieces_unlocked (); } - return a; + Change (CHANGE_TYPE_DONE, PlayerProperty::DCP_DECODE_REDUCTION, false); } -list > -Player::overlaps (DCPTime from, DCPTime to, boost::function valid) +optional +Player::content_time_to_dcp (shared_ptr content, ContentTime t) { - if (!_have_valid_pieces) { - setup_pieces (); - } + boost::mutex::scoped_lock lm (_mutex); - list > overlaps; 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->content == content) { + return content_time_to_dcp (i, t); } } - return overlaps; -} - -void -Player::reset_pieces () -{ - BOOST_FOREACH (shared_ptr i, _pieces) { - i->decoder->reset (); - } + /* We couldn't find this content; perhaps things are being changed over */ + return optional(); }