X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fplayer.cc;h=51f6a32c3c81b9a561bdaa05e583614456548397;hb=f7ccae9cf646b53f57fffd9637cffae1cd26bb6c;hp=d344aab0a13b8902dc80d93a549191740447a6fb;hpb=3da6aa049b1506a36377978b43735f18d9adac7b;p=dcpomatic.git

diff --git a/src/lib/player.cc b/src/lib/player.cc
index d344aab0a..51f6a32c3 100644
--- a/src/lib/player.cc
+++ b/src/lib/player.cc
@@ -82,7 +82,7 @@ Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist
 	, _playlist (playlist)
 	, _have_valid_pieces (false)
 	, _ignore_video (false)
-	, _ignore_audio (false)
+	, _ignore_subtitle (false)
 	, _always_burn_subtitles (false)
 	, _fast (false)
 	, _play_referenced (false)
@@ -109,7 +109,7 @@ Player::setup_pieces ()
 			continue;
 		}
 
-		shared_ptr<Decoder> decoder = decoder_factory (i, _film->log());
+		shared_ptr<Decoder> decoder = decoder_factory (i, _film->log(), _fast);
 		FrameRateChange frc (i->active_video_frame_rate(), _film->video_frame_rate());
 
 		if (!decoder) {
@@ -121,13 +121,16 @@ Player::setup_pieces ()
 			decoder->video->set_ignore ();
 		}
 
-		if (decoder->audio && _ignore_audio) {
-			decoder->audio->set_ignore ();
+		if (decoder->subtitle && _ignore_subtitle) {
+			decoder->subtitle->set_ignore ();
 		}
 
 		shared_ptr<DCPDecoder> dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
 		if (dcp && _play_referenced) {
-			dcp->set_decode_referenced ();
+			if (_play_referenced) {
+				dcp->set_decode_referenced ();
+			}
+			dcp->set_forced_reduction (_dcp_decode_reduction);
 		}
 
 		shared_ptr<Piece> piece (new Piece (i, decoder, frc));
@@ -156,19 +159,8 @@ Player::setup_pieces ()
 		}
 	}
 
-	if (!_play_referenced) {
-		BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
-			shared_ptr<DCPContent> dc = dynamic_pointer_cast<DCPContent> (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()));
-				}
-			}
-		}
-	}
+	_black = Empty (_film->content(), _film->length(), bind(&Content::video, _1));
+	_silent = Empty (_film->content(), _film->length(), bind(&Content::audio, _1));
 
 	_last_video_time = DCPTime ();
 	_last_audio_time = DCPTime ();
@@ -370,8 +362,9 @@ DCPTime
 Player::resampled_audio_to_dcp (shared_ptr<const Piece> 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 ());
+	return DCPTime::from_frames (f, _film->audio_frame_rate())
+		- DCPTime (piece->content->trim_start(), piece->frc)
+		+ piece->content->position();
 }
 
 ContentTime
@@ -416,6 +409,12 @@ Player::set_ignore_video ()
 	_ignore_video = true;
 }
 
+void
+Player::set_ignore_subtitle ()
+{
+	_ignore_subtitle = 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.
@@ -426,6 +425,7 @@ Player::set_always_burn_subtitles (bool burn)
 	_always_burn_subtitles = burn;
 }
 
+/** Sets up the player to be faster, possibly at the expense of quality */
 void
 Player::set_fast ()
 {
@@ -453,7 +453,7 @@ Player::get_reel_assets ()
 
 		scoped_ptr<DCPDecoder> decoder;
 		try {
-			decoder.reset (new DCPDecoder (j, _film->log()));
+			decoder.reset (new DCPDecoder (j, _film->log(), false));
 		} catch (...) {
 			return a;
 		}
@@ -513,72 +513,79 @@ Player::pass ()
 		setup_pieces ();
 	}
 
-	shared_ptr<Piece> earliest;
-	DCPTime earliest_content;
+	if (_playlist->length() == DCPTime()) {
+		/* Special case of an empty Film; just give one black frame */
+		emit_video (black_player_video_frame(), DCPTime());
+		return true;
+	}
+
+	/* Find the decoder or empty which is farthest behind where we are and make it emit some data */
+
+	shared_ptr<Piece> earliest_content;
+	optional<DCPTime> earliest_time;
 
 	BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
 		if (!i->done) {
 			DCPTime const t = content_time_to_dcp (i, i->decoder->position());
-			if (!earliest || t < earliest_content) {
-				earliest_content = t;
-				earliest = i;
+			/* Given two choices at the same time, pick the one with a subtitle so we see it before
+			   the video.
+			*/
+			if (!earliest_time || t < *earliest_time || (t == *earliest_time && i->decoder->subtitle)) {
+				earliest_time = t;
+				earliest_content = 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())
+	bool done = false;
 
-	   XXX: can't we just look at content position/end and fill based on that?
-	*/
-	DCPTime fill_towards = earliest ? earliest_content : _playlist->length().ceil(_film->video_frame_rate());
+	enum {
+		NONE,
+		CONTENT,
+		BLACK,
+		SILENT
+	} which = NONE;
 
-	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 (_last_video_time && (!earliest || *_last_video_time < earliest_content) && ((fill_towards - *_last_video_time)) >= one_video_frame()) {
-		list<DCPTimePeriod> p = subtract(DCPTimePeriod(*_last_video_time, *_last_video_time + 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;
+	if (earliest_content) {
+		which = CONTENT;
 	}
 
-	optional<DCPTime> audio_fill_from;
-	if (_last_audio_time) {
-		/* Fill from the last audio or seek time */
-		audio_fill_from = _last_audio_time;
+	if (!_black.done() && (!earliest_time || _black.position() < *earliest_time)) {
+		earliest_time = _black.position ();
+		which = BLACK;
 	}
 
-	DCPTime audio_fill_towards = fill_towards;
-	if (earliest && earliest->content->audio) {
-		audio_fill_towards += DCPTime::from_seconds (earliest->content->audio->delay() / 1000.0);
+	if (!_silent.done() && (!earliest_time || _silent.position() < *earliest_time)) {
+		earliest_time = _silent.position ();
+		which = SILENT;
 	}
 
-	if (audio_fill_from && audio_fill_from < audio_fill_towards && ((audio_fill_towards - *audio_fill_from) >= one_video_frame())) {
-		DCPTimePeriod period (*audio_fill_from, audio_fill_towards);
+	switch (which) {
+	case CONTENT:
+		earliest_content->done = earliest_content->decoder->pass ();
+		break;
+	case BLACK:
+		emit_video (black_player_video_frame(), _black.position());
+		_black.set_position (_black.position() + one_video_frame());
+		break;
+	case SILENT:
+	{
+		DCPTimePeriod period (_silent.period_at_position());
 		if (period.duration() > one_video_frame()) {
 			period.to = period.from + one_video_frame();
 		}
-		list<DCPTimePeriod> p = subtract(period, _no_audio);
-		if (!p.empty ()) {
-			fill_audio (p.front());
-			filled = true;
-		}
+		fill_audio (period);
+		_silent.set_position (period.to);
+		break;
 	}
-
-	if (earliest) {
-		earliest->done = earliest->decoder->pass ();
+	case NONE:
+		done = true;
+		break;
 	}
 
 	/* Emit any audio that is ready */
 
-	DCPTime pull_to = _playlist->length ();
+	DCPTime pull_to = _film->length ();
 	for (map<AudioStreamPtr, StreamState>::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;
@@ -588,24 +595,21 @@ Player::pass ()
 	list<pair<shared_ptr<AudioBuffers>, DCPTime> > audio = _audio_merger.pull (pull_to);
 	for (list<pair<shared_ptr<AudioBuffers>, 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.
-			*/
+			/* This new data comes before the last we emitted (or the last seek); discard it */
 			pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (i->first, i->second, *_last_audio_time);
 			if (!cut.first) {
 				continue;
 			}
 			*i = cut;
-		}
-
-		if (_last_audio_time) {
+		} 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));
 		}
 
 		emit_audio (i->first, i->second);
 	}
 
-	return !earliest && !filled;
+	return done;
 }
 
 optional<PositionImage>
@@ -633,48 +637,41 @@ Player::subtitles_for_frame (DCPTime time) const
 	return merge (subtitles);
 }
 
-void
+bool
 Player::video (weak_ptr<Piece> wp, ContentVideo video)
 {
 	shared_ptr<Piece> piece = wp.lock ();
 	if (!piece) {
-		return;
+		return false;
 	}
 
 	FrameRateChange frc(piece->content->active_video_frame_rate(), _film->video_frame_rate());
 	if (frc.skip && (video.frame % 2) == 1) {
-		return;
+		return false;
 	}
 
-	/* Time and period of the frame we will emit */
+	/* Time of the first 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;
+		return false;
 	}
 
 	/* Fill gaps that we discover now that we have some video which needs to be emitted */
 
-	optional<DCPTime> 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);
-				}
+		DCPTime fill_from = max (*_last_video_time, piece->content->position());
+		for (DCPTime j = fill_from; j < time; 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);
 			}
 		}
 	}
@@ -694,81 +691,91 @@ Player::video (weak_ptr<Piece> wp, ContentVideo video)
 			)
 		);
 
-	emit_video (_last_video[wp], time);
-}
-
-/** Do our common processing on some audio */
-void
-Player::audio_transform (shared_ptr<AudioContent> content, AudioStreamPtr stream, ContentAudio content_audio, DCPTime time)
-{
-	DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
-
-	/* Gain */
-
-	if (content->gain() != 0) {
-		shared_ptr<AudioBuffers> 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 ());
+	DCPTime t = time;
+	for (int i = 0; i < frc.repeat; ++i) {
+		emit_video (_last_video[wp], t);
+		t += one_video_frame ();
 	}
 
-	/* 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());
+	return true;
 }
 
-void
+/** @return Number of input frames that were `accepted'.  This is the number of frames passed in
+ *  unless some were discarded at the end of the block.
+ */
+Frame
 Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
 {
 	DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
 
 	shared_ptr<Piece> piece = wp.lock ();
 	if (!piece) {
-		return;
+		return 0;
 	}
 
 	shared_ptr<AudioContent> 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);
+	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());
 
+	/* We consider frames trimmed off the beginning to nevertheless be `accepted'; it's only frames trimmed
+	   off the end that are considered as discarded.  This logic is necessary to ensure correct reel lengths,
+	   although the precise details escape me at the moment.
+	*/
+	Frame accepted = content_audio.audio->frames();
+
 	/* Remove anything that comes before the start or after the end of the content */
 	if (time < piece->content->position()) {
 		pair<shared_ptr<AudioBuffers>, DCPTime> cut = discard_audio (content_audio.audio, time, piece->content->position());
 		if (!cut.first) {
 			/* This audio is entirely discarded */
-			return;
+			return accepted;
 		}
 		content_audio.audio = cut.first;
 		time = cut.second;
 	} else if (time > piece->content->end()) {
 		/* Discard it all */
-		return;
+		return 0;
 	} 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;
+			return 0;
 		}
 		shared_ptr<AudioBuffers> cut (new AudioBuffers (content_audio.audio->channels(), remaining_frames));
 		cut->copy_from (content_audio.audio.get(), remaining_frames, 0, 0);
 		content_audio.audio = cut;
+		accepted = content_audio.audio->frames();
 	}
 
-	audio_transform (content, stream, content_audio, time);
+	DCPOMATIC_ASSERT (content_audio.audio->frames() > 0);
+
+	/* Gain */
+
+	if (content->gain() != 0) {
+		shared_ptr<AudioBuffers> 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());
+	return accepted;
 }
 
 void
@@ -861,6 +868,10 @@ Player::subtitle_stop (weak_ptr<Piece> wp, ContentTime to)
 void
 Player::seek (DCPTime time, bool accurate)
 {
+	if (!_have_valid_pieces) {
+		setup_pieces ();
+	}
+
 	if (_audio_processor) {
 		_audio_processor->flush ();
 	}
@@ -891,6 +902,9 @@ Player::seek (DCPTime time, bool accurate)
 		_last_audio_time = optional<DCPTime>();
 	}
 
+	_black.set_position (time);
+	_silent.set_position (time);
+
 	_last_video.clear ();
 }
 
@@ -926,18 +940,16 @@ Player::fill_audio (DCPTimePeriod period)
 
 	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<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
-				silence->make_silent ();
-				emit_audio (silence, t);
-			}
-			t += block;
+	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<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
+			silence->make_silent ();
+			emit_audio (silence, t);
 		}
+		t += block;
 	}
 }
 
@@ -960,3 +972,15 @@ Player::discard_audio (shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTi
 	cut->copy_from (audio.get(), remaining_frames, discard_frames, 0);
 	return make_pair(cut, time + discard_time);
 }
+
+void
+Player::set_dcp_decode_reduction (optional<int> reduction)
+{
+	if (reduction == _dcp_decode_reduction) {
+		return;
+	}
+
+	_dcp_decode_reduction = reduction;
+	_have_valid_pieces = false;
+	Changed (false);
+}