/*
- Copyright (C) 2013-2016 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2017 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
#include "content_subtitle.h"
#include "dcp_decoder.h"
#include "image_decoder.h"
+#include "resampler.h"
+#include "compose.hpp"
#include <dcp/reel.h>
#include <dcp/reel_sound_asset.h>
#include <dcp/reel_subtitle_asset.h>
using boost::optional;
using boost::scoped_ptr;
-static bool
-has_video (Content* c)
-{
- return static_cast<bool>(c->video);
-}
-
-static bool
-has_audio (Content* c)
-{
- return static_cast<bool>(c->audio);
-}
-
-static bool
-has_subtitle (Content* c)
-{
- return static_cast<bool>(c->subtitle);
-}
-
Player::Player (shared_ptr<const Film> film, shared_ptr<const Playlist> playlist)
: _film (film)
, _playlist (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));
set_video_container_size (_film->frame_size ());
film_changed (Film::AUDIO_PROCESSOR);
+
+ seek (DCPTime (), true);
}
void
decoder->audio->set_ignore ();
}
- if (decoder->audio && _fast) {
- decoder->audio->set_fast ();
- }
-
shared_ptr<DCPDecoder> dcp = dynamic_pointer_cast<DCPDecoder> (decoder);
if (dcp && _play_referenced) {
dcp->set_decode_referenced ();
}
if (decoder->audio) {
- decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1));
+ decoder->audio->Data.connect (bind (&Player::audio, this, weak_ptr<Piece> (piece), _1, _2));
}
if (decoder->subtitle) {
}
}
+ BOOST_FOREACH (shared_ptr<Piece> 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<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()));
+ }
+ }
+ }
+ }
+
_have_valid_pieces = true;
}
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
}
shared_ptr<PlayerVideo>
-Player::black_player_video_frame (DCPTime time) const
+Player::black_player_video_frame () const
{
return shared_ptr<PlayerVideo> (
new PlayerVideo (
shared_ptr<const ImageProxy> (new RawImageProxy (_black_image)),
- time,
Crop (),
optional<double> (),
_video_container_size,
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<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 ());
+}
+
ContentTime
-Player::dcp_to_content_subtitle (shared_ptr<const Piece> piece, DCPTime t) const
+Player::dcp_to_content_time (shared_ptr<const Piece> piece, DCPTime t) const
{
DCPTime s = t - piece->content->position ();
s = min (piece->content->length_after_trim(), s);
}
DCPTime
-Player::content_subtitle_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
+Player::content_time_to_dcp (shared_ptr<const Piece> piece, ContentTime t) const
{
return max (DCPTime (), DCPTime (t - piece->content->trim_start(), piece->frc) + piece->content->position());
}
}
shared_ptr<Piece> earliest;
- DCPTime earliest_position;
+ DCPTime earliest_content;
+
BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
- /* Convert i->decoder->position() to DCPTime and work out the earliest */
+ if (!i->done) {
+ DCPTime const t = i->content->position() + DCPTime (i->decoder->position(), i->frc);
+ if (!earliest || t < earliest_content) {
+ earliest_content = t;
+ earliest = i;
+ }
+ }
}
- earliest->decoder->pass ();
+ if (!earliest) {
+ /* No more content; fill up with silent black */
+ DCPTimePeriod remaining_video (DCPTime(), _playlist->length());
+ if (_last_video_time) {
+ remaining_video.from = _last_video_time.get() + one_video_frame();
+ }
+ fill_video (remaining_video);
+ DCPTimePeriod remaining_audio (DCPTime(), _playlist->length());
+ if (_last_audio_time) {
+ remaining_audio.from = _last_audio_time.get();
+ }
+ fill_audio (remaining_audio);
+ return true;
+ }
+
+ earliest->done = earliest->decoder->pass ();
+ if (earliest->done && earliest->content->audio) {
+ /* Flush the Player audio system for this piece */
+ BOOST_FOREACH (AudioStreamPtr i, earliest->content->audio->streams()) {
+ audio_flush (earliest, i);
+ }
+ }
- /* XXX: collect audio and maybe emit some */
+ /* Emit any audio that is ready */
+
+ DCPTime pull_from = _playlist->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_from) {
+ pull_from = i->second.last_push_end;
+ }
+ }
+
+ list<pair<shared_ptr<AudioBuffers>, DCPTime> > audio = _audio_merger.pull (pull_from);
+ for (list<pair<shared_ptr<AudioBuffers>, DCPTime> >::iterator i = audio.begin(); i != audio.end(); ++i) {
+ DCPOMATIC_ASSERT (!_last_audio_time || i->second >= _last_audio_time.get());
+ if (_last_audio_time) {
+ fill_audio (DCPTimePeriod (_last_audio_time.get(), i->second));
+ }
+ Audio (i->first, i->second);
+ _last_audio_time = i->second + DCPTime::from_frames(i->first->frames(), _film->audio_frame_rate());
+ }
+
+ return false;
}
void
return;
}
- /* Get subs to burn in and burn them in */
+ 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());
- /* Fill gaps */
+ /* Discard if it's outside the content's period */
+ if (time < piece->content->position() || time >= piece->content->end()) {
+ return;
+ }
- DCPTime time = content_video_to_dcp (piece, video.frame.index());
+ /* Get any subtitles */
- dcp::Size image_size = piece->content->video->scale().size (
- piece->content->video, _video_container_size, _film->frame_size ()
- );
+ optional<PositionImage> subtitles;
- Video (
- shared_ptr<PlayerVideo> (
- new PlayerVideo (
- video.image,
- time,
- piece->content->video->crop (),
- piece->content->video->fade (video.frame.index()),
- image_size,
- _video_container_size,
- video.frame.eyes(),
- video.part,
- piece->content->video->colour_conversion ()
- )
+ for (list<pair<PlayerSubtitles, DCPTimePeriod> >::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
+
+ if (!i->second.overlap (period)) {
+ continue;
+ }
+
+ list<PositionImage> sub_images;
+
+ /* Image subtitles */
+ list<PositionImage> c = transform_image_subtitles (i->first.image);
+ copy (c.begin(), c.end(), back_inserter (sub_images));
+
+ /* Text subtitles (rendered to an image) */
+ if (!i->first.text.empty ()) {
+ list<PositionImage> s = render_subtitles (i->first.text, i->first.fonts, _video_container_size, time);
+ copy (s.begin (), s.end (), back_inserter (sub_images));
+ }
+
+ if (!sub_images.empty ()) {
+ subtitles = merge (sub_images);
+ }
+ }
+
+ /* Fill gaps */
+
+ if (_last_video_time) {
+ fill_video (DCPTimePeriod (_last_video_time.get() + one_video_frame(), time));
+ }
+
+ _last_video.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 ()
)
);
+ if (subtitles) {
+ _last_video->set_subtitle (subtitles.get ());
+ }
+
+ _last_video_time = time;
+
+ Video (_last_video, *_last_video_time);
+
+ /* Discard any subtitles we no longer need */
+
+ for (list<pair<PlayerSubtitles, DCPTimePeriod> >::iterator i = _subtitles.begin (); i != _subtitles.end(); ) {
+ list<pair<PlayerSubtitles, DCPTimePeriod> >::iterator tmp = i;
+ ++tmp;
+
+ if (i->second.to < time) {
+ _subtitles.erase (i);
+ }
+
+ i = tmp;
+ }
+}
+
+void
+Player::audio_flush (shared_ptr<Piece> piece, AudioStreamPtr stream)
+{
+ shared_ptr<AudioContent> content = piece->content->audio;
+ DCPOMATIC_ASSERT (content);
+
+ shared_ptr<Resampler> r = resampler (content, stream, false);
+ if (!r) {
+ return;
+ }
+
+ pair<shared_ptr<const AudioBuffers>, Frame> ro = r->flush ();
+ ContentAudio content_audio;
+ content_audio.audio = ro.first;
+ content_audio.frame = ro.second;
+
+ /* Compute time in the DCP */
+ DCPTime time = resampled_audio_to_dcp (piece, content_audio.frame) + DCPTime::from_seconds (content->delay() / 1000.0);
+
+ audio_transform (content, stream, content_audio, time);
}
+/** Do our common processing on some audio */
void
-Player::audio (weak_ptr<Piece> piece, ContentAudio video)
+Player::audio_transform (shared_ptr<AudioContent> content, AudioStreamPtr stream, ContentAudio content_audio, DCPTime time)
{
- /* Put into merge buffer */
+ /* Gain */
+
+ if (content->gain() != 0) {
+ shared_ptr<AudioBuffers> gain (new AudioBuffers (content_audio.audio));
+ gain->apply_gain (content->gain ());
+ content_audio.audio = gain;
+ }
+
+ /* Remap */
+
+ shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), content_audio.audio->frames()));
+ dcp_mapped->make_silent ();
+
+ AudioMapping map = stream->mapping ();
+ for (int i = 0; i < map.input_channels(); ++i) {
+ for (int j = 0; j < dcp_mapped->channels(); ++j) {
+ if (map.get (i, static_cast<dcp::Channel> (j)) > 0) {
+ dcp_mapped->accumulate_channel (
+ content_audio.audio.get(),
+ i,
+ static_cast<dcp::Channel> (j),
+ map.get (i, static_cast<dcp::Channel> (j))
+ );
+ }
+ }
+ }
+
+ content_audio.audio = dcp_mapped;
+
+ /* 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::image_subtitle (weak_ptr<Piece> piece, ContentImageSubtitle subtitle)
+Player::audio (weak_ptr<Piece> wp, AudioStreamPtr stream, ContentAudio content_audio)
{
- /* Store for video to see */
+ shared_ptr<Piece> piece = wp.lock ();
+ if (!piece) {
+ return;
+ }
+
+ shared_ptr<AudioContent> content = piece->content->audio;
+ DCPOMATIC_ASSERT (content);
+
+ /* Resample */
+ if (stream->frame_rate() != content->resampled_frame_rate()) {
+ shared_ptr<Resampler> r = resampler (content, stream, true);
+ pair<shared_ptr<const AudioBuffers>, Frame> ro = r->run (content_audio.audio, content_audio.frame);
+ content_audio.audio = ro.first;
+ content_audio.frame = ro.second;
+ }
+
+ /* 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()) {
+ DCPTime const discard_time = piece->content->position() - time;
+ Frame discard_frames = discard_time.frames_round(_film->audio_frame_rate());
+ Frame remaining_frames = content_audio.audio->frames() - discard_frames;
+ if (remaining_frames <= 0) {
+ /* This audio is entirely discarded */
+ return;
+ }
+ shared_ptr<AudioBuffers> cut (new AudioBuffers (content_audio.audio->channels(), remaining_frames));
+ cut->copy_from (content_audio.audio.get(), remaining_frames, discard_frames, 0);
+ content_audio.audio = cut;
+ time += discard_time;
+ } 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());
+ 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;
+ }
+
+ audio_transform (content, stream, content_audio, time);
}
void
-Player::text_subtitle (weak_ptr<Piece> piece, ContentTextSubtitle subtitle)
+Player::image_subtitle (weak_ptr<Piece> wp, ContentImageSubtitle subtitle)
{
- /* Store for video to see, or emit */
+ shared_ptr<Piece> piece = wp.lock ();
+ if (!piece) {
+ return;
+ }
+
+ /* Apply content's subtitle offsets */
+ subtitle.sub.rectangle.x += piece->content->subtitle->x_offset ();
+ subtitle.sub.rectangle.y += piece->content->subtitle->y_offset ();
+
+ /* Apply content's subtitle scale */
+ subtitle.sub.rectangle.width *= piece->content->subtitle->x_scale ();
+ subtitle.sub.rectangle.height *= piece->content->subtitle->y_scale ();
+
+ /* Apply a corrective translation to keep the subtitle centred after that scale */
+ subtitle.sub.rectangle.x -= subtitle.sub.rectangle.width * (piece->content->subtitle->x_scale() - 1);
+ subtitle.sub.rectangle.y -= subtitle.sub.rectangle.height * (piece->content->subtitle->y_scale() - 1);
+
+ PlayerSubtitles ps;
+ ps.image.push_back (subtitle.sub);
+ DCPTimePeriod period (content_time_to_dcp (piece, subtitle.period().from), content_time_to_dcp (piece, subtitle.period().to));
+
+ if (piece->content->subtitle->use() && (piece->content->subtitle->burn() || _always_burn_subtitles)) {
+ _subtitles.push_back (make_pair (ps, period));
+ } else {
+ Subtitle (ps, period);
+ }
+}
+
+void
+Player::text_subtitle (weak_ptr<Piece> wp, ContentTextSubtitle subtitle)
+{
+ shared_ptr<Piece> piece = wp.lock ();
+ if (!piece) {
+ return;
+ }
+
+ PlayerSubtitles ps;
+ DCPTimePeriod const period (content_time_to_dcp (piece, subtitle.period().from), content_time_to_dcp (piece, subtitle.period().to));
+
+ 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(period.from.seconds(), 1000));
+ s.set_out (dcp::Time(period.to.seconds(), 1000));
+ ps.text.push_back (SubtitleString (s, piece->content->subtitle->outline_width()));
+ ps.add_fonts (piece->content->subtitle->fonts ());
+ }
+
+ if (piece->content->subtitle->use() && (piece->content->subtitle->burn() || _always_burn_subtitles)) {
+ _subtitles.push_back (make_pair (ps, period));
+ } else {
+ Subtitle (ps, period);
+ }
}
void
Player::seek (DCPTime time, bool accurate)
{
+ if (_audio_processor) {
+ _audio_processor->flush ();
+ }
+
+ BOOST_FOREACH (shared_ptr<Piece> i, _pieces) {
+ if (i->content->position() <= time && time < i->content->end()) {
+ i->decoder->seek (dcp_to_content_time (i, time), accurate);
+ i->done = false;
+ }
+ }
+
if (accurate) {
- _last_video = time - DCPTime::from_frames (1, _film->video_frame_rate ());
+ _last_video_time = time - one_video_frame ();
+ _last_audio_time = time;
+ } else {
+ _last_video_time = optional<DCPTime> ();
+ _last_audio_time = optional<DCPTime> ();
}
}
+
+shared_ptr<Resampler>
+Player::resampler (shared_ptr<const AudioContent> content, AudioStreamPtr stream, bool create)
+{
+ ResamplerMap::const_iterator i = _resamplers.find (make_pair (content, stream));
+ if (i != _resamplers.end ()) {
+ return i->second;
+ }
+
+ if (!create) {
+ return shared_ptr<Resampler> ();
+ }
+
+ LOG_GENERAL (
+ "Creating new resampler from %1 to %2 with %3 channels",
+ stream->frame_rate(),
+ content->resampled_frame_rate(),
+ stream->channels()
+ );
+
+ shared_ptr<Resampler> r (
+ new Resampler (stream->frame_rate(), content->resampled_frame_rate(), stream->channels())
+ );
+
+ _resamplers[make_pair(content, stream)] = r;
+ return r;
+}
+
+void
+Player::fill_video (DCPTimePeriod period)
+{
+ /* XXX: this may not work for 3D */
+ BOOST_FOREACH (DCPTimePeriod i, subtract(period, _no_video)) {
+ for (DCPTime j = i.from; j < i.to; j += one_video_frame()) {
+ if (_playlist->video_content_at(j) && _last_video) {
+ Video (shared_ptr<PlayerVideo> (new PlayerVideo (*_last_video)), j);
+ } else {
+ Video (black_player_video_frame(), j);
+ }
+ }
+ }
+}
+
+void
+Player::fill_audio (DCPTimePeriod period)
+{
+ 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 ();
+ Audio (silence, t);
+ }
+ t += block;
+ }
+ }
+}
+
+DCPTime
+Player::one_video_frame () const
+{
+ return DCPTime::from_frames (1, _film->video_frame_rate ());
+}
projects / dcpomatic.git / blobdiff