*/
+#include <stdint.h>
#include "player.h"
#include "film.h"
#include "ffmpeg_decoder.h"
-#include "imagemagick_decoder.h"
+#include "ffmpeg_content.h"
+#include "image_decoder.h"
+#include "image_content.h"
#include "sndfile_decoder.h"
+#include "sndfile_content.h"
+#include "subtitle_content.h"
#include "playlist.h"
#include "job.h"
+#include "image.h"
+#include "ratio.h"
+#include "resampler.h"
+#include "log.h"
+#include "scaler.h"
using std::list;
using std::cout;
+using std::min;
+using std::max;
+using std::vector;
+using std::pair;
+using std::map;
using boost::shared_ptr;
using boost::weak_ptr;
using boost::dynamic_pointer_cast;
+class Piece
+{
+public:
+ Piece (shared_ptr<Content> c)
+ : content (c)
+ , video_position (c->position ())
+ , audio_position (c->position ())
+ , repeat_to_do (0)
+ , repeat_done (0)
+ {}
+
+ Piece (shared_ptr<Content> c, shared_ptr<Decoder> d)
+ : content (c)
+ , decoder (d)
+ , video_position (c->position ())
+ , audio_position (c->position ())
+ {}
+
+ /** Set this piece to repeat a video frame a given number of times */
+ void set_repeat (IncomingVideo video, int num)
+ {
+ repeat_video = video;
+ repeat_to_do = num;
+ repeat_done = 0;
+ }
+
+ void reset_repeat ()
+ {
+ repeat_video.image.reset ();
+ repeat_to_do = 0;
+ repeat_done = 0;
+ }
+
+ bool repeating () const
+ {
+ return repeat_done != repeat_to_do;
+ }
+
+ void repeat (Player* player)
+ {
+ player->process_video (
+ repeat_video.weak_piece,
+ repeat_video.image,
+ repeat_video.eyes,
+ repeat_done > 0,
+ repeat_video.frame,
+ (repeat_done + 1) * (TIME_HZ / player->_film->video_frame_rate ())
+ );
+
+ ++repeat_done;
+ }
+
+ shared_ptr<Content> content;
+ shared_ptr<Decoder> decoder;
+ /** Time of the last video we emitted relative to the start of the DCP */
+ Time video_position;
+ /** Time of the last audio we emitted relative to the start of the DCP */
+ Time audio_position;
+
+ IncomingVideo repeat_video;
+ int repeat_to_do;
+ int repeat_done;
+};
+
Player::Player (shared_ptr<const Film> f, shared_ptr<const Playlist> p)
: _film (f)
, _playlist (p)
, _video (true)
, _audio (true)
- , _subtitles (true)
- , _have_valid_decoders (false)
- , _ffmpeg_decoder_done (false)
- , _video_sync (true)
+ , _have_valid_pieces (false)
+ , _video_position (0)
+ , _audio_position (0)
+ , _audio_merger (f->audio_channels(), bind (&Film::time_to_audio_frames, f.get(), _1), bind (&Film::audio_frames_to_time, f.get(), _1))
+ , _last_emit_was_black (false)
{
- _playlist->Changed.connect (bind (&Player::playlist_changed, this));
- _playlist->ContentChanged.connect (bind (&Player::content_changed, this, _1, _2));
+ _playlist_changed_connection = _playlist->Changed.connect (bind (&Player::playlist_changed, this));
+ _playlist_content_changed_connection = _playlist->ContentChanged.connect (bind (&Player::content_changed, this, _1, _2, _3));
+ _film_changed_connection = _film->Changed.connect (bind (&Player::film_changed, this, _1));
+ set_video_container_size (fit_ratio_within (_film->container()->ratio (), _film->full_frame ()));
}
void
_audio = false;
}
-void
-Player::disable_subtitles ()
-{
- _subtitles = false;
-}
-
bool
Player::pass ()
{
- if (!_have_valid_decoders) {
- setup_decoders ();
- _have_valid_decoders = true;
+ if (!_have_valid_pieces) {
+ setup_pieces ();
}
-
- bool done = true;
-
- if (_playlist->video_from() == Playlist::VIDEO_FFMPEG || _playlist->audio_from() == Playlist::AUDIO_FFMPEG) {
- if (!_ffmpeg_decoder_done) {
- if (_ffmpeg_decoder->pass ()) {
- _ffmpeg_decoder_done = true;
- } else {
- done = false;
- }
+
+ Time earliest_t = TIME_MAX;
+ shared_ptr<Piece> earliest;
+ enum {
+ VIDEO,
+ AUDIO
+ } type = VIDEO;
+
+ for (list<shared_ptr<Piece> >::iterator i = _pieces.begin(); i != _pieces.end(); ++i) {
+ if ((*i)->decoder->done ()) {
+ continue;
}
- }
- if (_playlist->video_from() == Playlist::VIDEO_IMAGEMAGICK) {
- if (_imagemagick_decoder != _imagemagick_decoders.end ()) {
- if ((*_imagemagick_decoder)->pass ()) {
- _imagemagick_decoder++;
+ shared_ptr<VideoDecoder> vd = dynamic_pointer_cast<VideoDecoder> ((*i)->decoder);
+ shared_ptr<AudioDecoder> ad = dynamic_pointer_cast<AudioDecoder> ((*i)->decoder);
+
+ if (_video && vd) {
+ if ((*i)->video_position < earliest_t) {
+ earliest_t = (*i)->video_position;
+ earliest = *i;
+ type = VIDEO;
}
+ }
- if (_imagemagick_decoder != _imagemagick_decoders.end ()) {
- done = false;
+ if (_audio && ad && ad->has_audio ()) {
+ if ((*i)->audio_position < earliest_t) {
+ earliest_t = (*i)->audio_position;
+ earliest = *i;
+ type = AUDIO;
}
}
}
- /* XXX: sndfile */
-
- return done;
-}
+ if (!earliest) {
+ flush ();
+ return true;
+ }
-void
-Player::set_progress (shared_ptr<Job> job)
-{
- /* Assume progress can be divined from how far through the video we are */
- switch (_playlist->video_from ()) {
- case Playlist::VIDEO_NONE:
- break;
- case Playlist::VIDEO_FFMPEG:
- if (_playlist->video_length ()) {
- job->set_progress (float(_ffmpeg_decoder->video_frame()) / _playlist->video_length ());
+ switch (type) {
+ case VIDEO:
+ if (earliest_t > _video_position) {
+ emit_black ();
+ } else {
+ if (earliest->repeating ()) {
+ earliest->repeat (this);
+ } else {
+ earliest->decoder->pass ();
+ }
}
break;
- case Playlist::VIDEO_IMAGEMAGICK:
- {
- int n = 0;
- for (list<shared_ptr<ImageMagickDecoder> >::iterator i = _imagemagick_decoders.begin(); i != _imagemagick_decoders.end(); ++i) {
- if (_imagemagick_decoder == i) {
- job->set_progress (float (n) / _imagemagick_decoders.size ());
+
+ case AUDIO:
+ if (earliest_t > _audio_position) {
+ emit_silence (_film->time_to_audio_frames (earliest_t - _audio_position));
+ } else {
+ earliest->decoder->pass ();
+
+ if (earliest->decoder->done()) {
+ shared_ptr<AudioContent> ac = dynamic_pointer_cast<AudioContent> (earliest->content);
+ assert (ac);
+ shared_ptr<Resampler> re = resampler (ac, false);
+ if (re) {
+ shared_ptr<const AudioBuffers> b = re->flush ();
+ if (b->frames ()) {
+ process_audio (earliest, b, ac->audio_length ());
+ }
+ }
}
- ++n;
}
break;
}
+
+ if (_audio) {
+ boost::optional<Time> audio_done_up_to;
+ for (list<shared_ptr<Piece> >::iterator i = _pieces.begin(); i != _pieces.end(); ++i) {
+ if ((*i)->decoder->done ()) {
+ continue;
+ }
+
+ if (dynamic_pointer_cast<AudioDecoder> ((*i)->decoder)) {
+ audio_done_up_to = min (audio_done_up_to.get_value_or (TIME_MAX), (*i)->audio_position);
+ }
+ }
+
+ if (audio_done_up_to) {
+ TimedAudioBuffers<Time> tb = _audio_merger.pull (audio_done_up_to.get ());
+ Audio (tb.audio, tb.time);
+ _audio_position += _film->audio_frames_to_time (tb.audio->frames ());
+ }
}
+
+ return false;
}
+/** @param extra Amount of extra time to add to the content frame's time (for repeat) */
void
-Player::process_video (shared_ptr<Image> i, bool same, shared_ptr<Subtitle> s)
+Player::process_video (weak_ptr<Piece> weak_piece, shared_ptr<const Image> image, Eyes eyes, bool same, VideoContent::Frame frame, Time extra)
{
- Video (i, same, s);
-}
+ /* Keep a note of what came in so that we can repeat it if required */
+ _last_incoming_video.weak_piece = weak_piece;
+ _last_incoming_video.image = image;
+ _last_incoming_video.eyes = eyes;
+ _last_incoming_video.same = same;
+ _last_incoming_video.frame = frame;
+ _last_incoming_video.extra = extra;
+
+ shared_ptr<Piece> piece = weak_piece.lock ();
+ if (!piece) {
+ return;
+ }
-void
-Player::process_audio (shared_ptr<AudioBuffers> b)
-{
- Audio (b);
-}
+ shared_ptr<VideoContent> content = dynamic_pointer_cast<VideoContent> (piece->content);
+ assert (content);
-/** @return true on error */
-bool
-Player::seek (double t)
-{
- if (!_have_valid_decoders) {
- setup_decoders ();
- _have_valid_decoders = true;
+ FrameRateConversion frc (content->video_frame_rate(), _film->video_frame_rate());
+ if (frc.skip && (frame % 2) == 1) {
+ return;
}
+
+ Time const relative_time = (frame * frc.factor() * TIME_HZ / _film->video_frame_rate());
+ if (content->trimmed (relative_time)) {
+ return;
+ }
+
+ Time const time = content->position() + relative_time + extra - content->trim_start ();
+ float const ratio = content->ratio() ? content->ratio()->ratio() : content->video_size_after_crop().ratio();
+ libdcp::Size const image_size = fit_ratio_within (ratio, _video_container_size);
+
+ shared_ptr<PlayerImage> pi (
+ new PlayerImage (
+ image,
+ content->crop(),
+ image_size,
+ _video_container_size,
+ _film->scaler()
+ )
+ );
- bool r = false;
+ if (_film->with_subtitles () && _out_subtitle.image && time >= _out_subtitle.from && time <= _out_subtitle.to) {
- switch (_playlist->video_from()) {
- case Playlist::VIDEO_NONE:
- break;
- case Playlist::VIDEO_FFMPEG:
- if (!_ffmpeg_decoder || _ffmpeg_decoder->seek (t)) {
- r = true;
- }
- /* We're seeking, so all `all done' bets are off */
- _ffmpeg_decoder_done = false;
- break;
- case Playlist::VIDEO_IMAGEMAGICK:
- /* Find the decoder that contains this position */
- _imagemagick_decoder = _imagemagick_decoders.begin ();
- while (_imagemagick_decoder != _imagemagick_decoders.end ()) {
- double const this_length = (*_imagemagick_decoder)->video_length() / _film->video_frame_rate ();
- if (t < this_length) {
- break;
- }
- t -= this_length;
- ++_imagemagick_decoder;
- }
+ Position<int> const container_offset (
+ (_video_container_size.width - image_size.width) / 2,
+ (_video_container_size.height - image_size.width) / 2
+ );
- if (_imagemagick_decoder != _imagemagick_decoders.end()) {
- (*_imagemagick_decoder)->seek (t);
- } else {
- r = true;
- }
- break;
+ pi->set_subtitle (_out_subtitle.image, _out_subtitle.position + container_offset);
}
+
+#ifdef DCPOMATIC_DEBUG
+ _last_video = piece->content;
+#endif
- /* XXX: don't seek audio because we don't need to... */
+ Video (pi, eyes, content->colour_conversion(), same, time);
- return r;
+ _last_emit_was_black = false;
+ _video_position = piece->video_position = (time + TIME_HZ / _film->video_frame_rate());
+
+ if (frc.repeat > 1 && !piece->repeating ()) {
+ piece->set_repeat (_last_incoming_video, frc.repeat - 1);
+ }
}
-bool
-Player::seek_to_last ()
+void
+Player::process_audio (weak_ptr<Piece> weak_piece, shared_ptr<const AudioBuffers> audio, AudioContent::Frame frame)
{
- if (!_have_valid_decoders) {
- setup_decoders ();
- _have_valid_decoders = true;
+ shared_ptr<Piece> piece = weak_piece.lock ();
+ if (!piece) {
+ return;
}
- bool r = false;
+ shared_ptr<AudioContent> content = dynamic_pointer_cast<AudioContent> (piece->content);
+ assert (content);
+
+ /* Gain */
+ if (content->audio_gain() != 0) {
+ shared_ptr<AudioBuffers> gain (new AudioBuffers (audio));
+ gain->apply_gain (content->audio_gain ());
+ audio = gain;
+ }
+
+ /* Resample */
+ if (content->content_audio_frame_rate() != content->output_audio_frame_rate()) {
+ shared_ptr<Resampler> r = resampler (content, true);
+ pair<shared_ptr<const AudioBuffers>, AudioContent::Frame> ro = r->run (audio, frame);
+ audio = ro.first;
+ frame = ro.second;
+ }
- switch (_playlist->video_from ()) {
- case Playlist::VIDEO_NONE:
- break;
- case Playlist::VIDEO_FFMPEG:
- if (!_ffmpeg_decoder || _ffmpeg_decoder->seek_to_last ()) {
- r = true;
- }
+ Time const relative_time = _film->audio_frames_to_time (frame);
- /* We're seeking, so all `all done' bets are off */
- _ffmpeg_decoder_done = false;
- break;
- case Playlist::VIDEO_IMAGEMAGICK:
- if ((*_imagemagick_decoder)->seek_to_last ()) {
- r = true;
+ if (content->trimmed (relative_time)) {
+ return;
+ }
+
+ Time time = content->position() + (content->audio_delay() * TIME_HZ / 1000) + relative_time - content->trim_start ();
+
+ /* Remap channels */
+ shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (_film->audio_channels(), audio->frames()));
+ dcp_mapped->make_silent ();
+ list<pair<int, libdcp::Channel> > map = content->audio_mapping().content_to_dcp ();
+ for (list<pair<int, libdcp::Channel> >::iterator i = map.begin(); i != map.end(); ++i) {
+ if (i->first < audio->channels() && i->second < dcp_mapped->channels()) {
+ dcp_mapped->accumulate_channel (audio.get(), i->first, i->second);
}
- break;
}
- /* XXX: don't seek audio because we don't need to... */
+ audio = dcp_mapped;
- return r;
+ /* We must cut off anything that comes before the start of all time */
+ if (time < 0) {
+ int const frames = - time * _film->audio_frame_rate() / TIME_HZ;
+ if (frames >= audio->frames ()) {
+ return;
+ }
+
+ shared_ptr<AudioBuffers> trimmed (new AudioBuffers (audio->channels(), audio->frames() - frames));
+ trimmed->copy_from (audio.get(), audio->frames() - frames, frames, 0);
+
+ audio = trimmed;
+ time = 0;
+ }
+
+ _audio_merger.push (audio, time);
+ piece->audio_position += _film->audio_frames_to_time (audio->frames ());
}
void
-Player::setup_decoders ()
+Player::flush ()
{
- if ((_video && _playlist->video_from() == Playlist::VIDEO_FFMPEG) || (_audio && _playlist->audio_from() == Playlist::AUDIO_FFMPEG)) {
- _ffmpeg_decoder.reset (
- new FFmpegDecoder (
- _film,
- _playlist->ffmpeg(),
- _video && _playlist->video_from() == Playlist::VIDEO_FFMPEG,
- _audio && _playlist->audio_from() == Playlist::AUDIO_FFMPEG,
- _subtitles && _film->with_subtitles(),
- _video_sync
- )
- );
+ TimedAudioBuffers<Time> tb = _audio_merger.flush ();
+ if (_audio && tb.audio) {
+ Audio (tb.audio, tb.time);
+ _audio_position += _film->audio_frames_to_time (tb.audio->frames ());
+ }
+
+ while (_video && _video_position < _audio_position) {
+ emit_black ();
+ }
+
+ while (_audio && _audio_position < _video_position) {
+ emit_silence (_film->time_to_audio_frames (_video_position - _audio_position));
}
- if (_video && _playlist->video_from() == Playlist::VIDEO_FFMPEG) {
- _ffmpeg_decoder->connect_video (shared_from_this ());
+}
+
+/** Seek so that the next pass() will yield (approximately) the requested frame.
+ * Pass accurate = true to try harder to get close to the request.
+ * @return true on error
+ */
+void
+Player::seek (Time t, bool accurate)
+{
+ if (!_have_valid_pieces) {
+ setup_pieces ();
}
- if (_audio && _playlist->audio_from() == Playlist::AUDIO_FFMPEG) {
- _ffmpeg_decoder->connect_audio (shared_from_this ());
+ if (_pieces.empty ()) {
+ return;
}
- if (_video && _playlist->video_from() == Playlist::VIDEO_IMAGEMAGICK) {
- list<shared_ptr<const ImageMagickContent> > ic = _playlist->imagemagick ();
- for (list<shared_ptr<const ImageMagickContent> >::iterator i = ic.begin(); i != ic.end(); ++i) {
- shared_ptr<ImageMagickDecoder> d (new ImageMagickDecoder (_film, *i));
- _imagemagick_decoders.push_back (d);
- d->connect_video (shared_from_this ());
+ for (list<shared_ptr<Piece> >::iterator i = _pieces.begin(); i != _pieces.end(); ++i) {
+ shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> ((*i)->content);
+ if (!vc) {
+ continue;
}
- _imagemagick_decoder = _imagemagick_decoders.begin ();
+ /* s is the offset of t from the start position of this content */
+ Time s = t - vc->position ();
+ s = max (static_cast<Time> (0), s);
+ s = min (vc->length_after_trim(), s);
+
+ /* Hence set the piece positions to the `global' time */
+ (*i)->video_position = (*i)->audio_position = vc->position() + s;
+
+ /* And seek the decoder */
+ dynamic_pointer_cast<VideoDecoder>((*i)->decoder)->seek (
+ vc->time_to_content_video_frames (s + vc->trim_start ()), accurate
+ );
+
+ (*i)->reset_repeat ();
}
- if (_audio && _playlist->audio_from() == Playlist::AUDIO_SNDFILE) {
- list<shared_ptr<const SndfileContent> > sc = _playlist->sndfile ();
- for (list<shared_ptr<const SndfileContent> >::iterator i = sc.begin(); i != sc.end(); ++i) {
- shared_ptr<SndfileDecoder> d (new SndfileDecoder (_film, *i));
- _sndfile_decoders.push_back (d);
- d->connect_audio (shared_from_this ());
+ _video_position = _audio_position = t;
+
+ /* XXX: don't seek audio because we don't need to... */
+}
+
+void
+Player::setup_pieces ()
+{
+ list<shared_ptr<Piece> > old_pieces = _pieces;
+
+ _pieces.clear ();
+
+ ContentList content = _playlist->content ();
+ sort (content.begin(), content.end(), ContentSorter ());
+
+ for (ContentList::iterator i = content.begin(); i != content.end(); ++i) {
+
+ shared_ptr<Piece> piece (new Piece (*i));
+
+ /* XXX: into content? */
+
+ shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (*i);
+ if (fc) {
+ shared_ptr<FFmpegDecoder> fd (new FFmpegDecoder (_film, fc, _video, _audio));
+
+ fd->Video.connect (bind (&Player::process_video, this, weak_ptr<Piece> (piece), _1, _2, _3, _4, 0));
+ fd->Audio.connect (bind (&Player::process_audio, this, weak_ptr<Piece> (piece), _1, _2));
+ fd->Subtitle.connect (bind (&Player::process_subtitle, this, weak_ptr<Piece> (piece), _1, _2, _3, _4));
+
+ fd->seek (fc->time_to_content_video_frames (fc->trim_start ()), true);
+ piece->decoder = fd;
+ }
+
+ shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (*i);
+ if (ic) {
+ bool reusing = false;
+
+ /* See if we can re-use an old ImageDecoder */
+ for (list<shared_ptr<Piece> >::const_iterator j = old_pieces.begin(); j != old_pieces.end(); ++j) {
+ shared_ptr<ImageDecoder> imd = dynamic_pointer_cast<ImageDecoder> ((*j)->decoder);
+ if (imd && imd->content() == ic) {
+ piece = *j;
+ reusing = true;
+ }
+ }
+
+ if (!reusing) {
+ shared_ptr<ImageDecoder> id (new ImageDecoder (_film, ic));
+ id->Video.connect (bind (&Player::process_video, this, weak_ptr<Piece> (piece), _1, _2, _3, _4, 0));
+ piece->decoder = id;
+ }
+ }
+
+ shared_ptr<const SndfileContent> sc = dynamic_pointer_cast<const SndfileContent> (*i);
+ if (sc) {
+ shared_ptr<AudioDecoder> sd (new SndfileDecoder (_film, sc));
+ sd->Audio.connect (bind (&Player::process_audio, this, weak_ptr<Piece> (piece), _1, _2));
+
+ piece->decoder = sd;
}
+
+ _pieces.push_back (piece);
+ }
+
+ _have_valid_pieces = true;
+}
+
+void
+Player::content_changed (weak_ptr<Content> w, int property, bool frequent)
+{
+ shared_ptr<Content> c = w.lock ();
+ if (!c) {
+ return;
+ }
+
+ if (
+ property == ContentProperty::POSITION || property == ContentProperty::LENGTH ||
+ property == ContentProperty::TRIM_START || property == ContentProperty::TRIM_END ||
+ property == VideoContentProperty::VIDEO_FRAME_TYPE
+ ) {
+
+ _have_valid_pieces = false;
+ Changed (frequent);
+
+ } else if (property == SubtitleContentProperty::SUBTITLE_OFFSET || property == SubtitleContentProperty::SUBTITLE_SCALE) {
+
+ update_subtitle ();
+ Changed (frequent);
+
+ } else if (property == VideoContentProperty::VIDEO_CROP || property == VideoContentProperty::VIDEO_RATIO) {
+
+ Changed (frequent);
+
+ } else if (property == ContentProperty::PATH) {
+
+ Changed (frequent);
}
}
void
-Player::disable_video_sync ()
+Player::playlist_changed ()
{
- _video_sync = false;
+ _have_valid_pieces = false;
+ Changed (false);
}
-double
-Player::last_video_time () const
+void
+Player::set_video_container_size (libdcp::Size s)
{
- switch (_playlist->video_from ()) {
- case Playlist::VIDEO_NONE:
- return 0;
- case Playlist::VIDEO_FFMPEG:
- return _ffmpeg_decoder->last_source_time ();
- case Playlist::VIDEO_IMAGEMAGICK:
- {
- double t = 0;
- for (list<shared_ptr<ImageMagickDecoder> >::const_iterator i = _imagemagick_decoders.begin(); i != _imagemagick_decoder; ++i) {
- t += (*i)->video_length() / (*i)->video_frame_rate ();
- }
+ _video_container_size = s;
+
+ shared_ptr<Image> im (new Image (PIX_FMT_RGB24, _video_container_size, true));
+ im->make_black ();
+
+ _black_frame.reset (
+ new PlayerImage (
+ im,
+ Crop(),
+ _video_container_size,
+ _video_container_size,
+ Scaler::from_id ("bicubic")
+ )
+ );
+}
+
+shared_ptr<Resampler>
+Player::resampler (shared_ptr<AudioContent> c, bool create)
+{
+ map<shared_ptr<AudioContent>, shared_ptr<Resampler> >::iterator i = _resamplers.find (c);
+ if (i != _resamplers.end ()) {
+ return i->second;
+ }
- return t + (*_imagemagick_decoder)->last_source_time ();
+ if (!create) {
+ return shared_ptr<Resampler> ();
}
+
+ _film->log()->log (
+ String::compose (
+ "Creating new resampler for %1 to %2 with %3 channels", c->content_audio_frame_rate(), c->output_audio_frame_rate(), c->audio_channels()
+ )
+ );
+
+ shared_ptr<Resampler> r (new Resampler (c->content_audio_frame_rate(), c->output_audio_frame_rate(), c->audio_channels()));
+ _resamplers[c] = r;
+ return r;
+}
+
+void
+Player::emit_black ()
+{
+#ifdef DCPOMATIC_DEBUG
+ _last_video.reset ();
+#endif
+
+ Video (_black_frame, EYES_BOTH, ColourConversion(), _last_emit_was_black, _video_position);
+ _video_position += _film->video_frames_to_time (1);
+ _last_emit_was_black = true;
+}
+
+void
+Player::emit_silence (OutputAudioFrame most)
+{
+ if (most == 0) {
+ return;
}
+
+ OutputAudioFrame N = min (most, _film->audio_frame_rate() / 2);
+ shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), N));
+ silence->make_silent ();
+ Audio (silence, _audio_position);
+ _audio_position += _film->audio_frames_to_time (N);
+}
+
+void
+Player::film_changed (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
+ last time we were run.
+ */
- return 0;
+ if (p == Film::SCALER || p == Film::WITH_SUBTITLES || p == Film::CONTAINER) {
+ Changed (false);
+ }
}
void
-Player::content_changed (weak_ptr<Content> w, int p)
+Player::process_subtitle (weak_ptr<Piece> weak_piece, shared_ptr<Image> image, dcpomatic::Rect<double> rect, Time from, Time to)
{
- shared_ptr<Content> c = w.lock ();
- if (!c) {
+ _in_subtitle.piece = weak_piece;
+ _in_subtitle.image = image;
+ _in_subtitle.rect = rect;
+ _in_subtitle.from = from;
+ _in_subtitle.to = to;
+
+ update_subtitle ();
+}
+
+void
+Player::update_subtitle ()
+{
+ shared_ptr<Piece> piece = _in_subtitle.piece.lock ();
+ if (!piece) {
return;
}
- if (p == VideoContentProperty::VIDEO_LENGTH) {
- if (dynamic_pointer_cast<FFmpegContent> (c)) {
- _have_valid_decoders = false;
- }
+ if (!_in_subtitle.image) {
+ _out_subtitle.image.reset ();
+ return;
}
+
+ shared_ptr<SubtitleContent> sc = dynamic_pointer_cast<SubtitleContent> (piece->content);
+ assert (sc);
+
+ dcpomatic::Rect<double> in_rect = _in_subtitle.rect;
+ libdcp::Size scaled_size;
+
+ in_rect.y += sc->subtitle_offset ();
+
+ /* We will scale the subtitle up to fit _video_container_size, and also by the additional subtitle_scale */
+ scaled_size.width = in_rect.width * _video_container_size.width * sc->subtitle_scale ();
+ scaled_size.height = in_rect.height * _video_container_size.height * sc->subtitle_scale ();
+
+ /* 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_scale) / 2) and
+ * (height_before_subtitle_scale * (1 - subtitle_scale) / 2).
+ *
+ * Combining these two translations gives these expressions.
+ */
+
+ _out_subtitle.position.x = rint (_video_container_size.width * (in_rect.x + (in_rect.width * (1 - sc->subtitle_scale ()) / 2)));
+ _out_subtitle.position.y = rint (_video_container_size.height * (in_rect.y + (in_rect.height * (1 - sc->subtitle_scale ()) / 2)));
+
+ _out_subtitle.image = _in_subtitle.image->scale (
+ scaled_size,
+ Scaler::from_id ("bicubic"),
+ _in_subtitle.image->pixel_format (),
+ true
+ );
+ _out_subtitle.from = _in_subtitle.from + piece->content->position ();
+ _out_subtitle.to = _in_subtitle.to + piece->content->position ();
+}
+
+/** Re-emit the last frame that was emitted, using current settings for crop, ratio, scaler and subtitles.
+ * @return false if this could not be done.
+ */
+bool
+Player::repeat_last_video ()
+{
+ if (!_last_incoming_video.image || !_have_valid_pieces) {
+ return false;
+ }
+
+ process_video (
+ _last_incoming_video.weak_piece,
+ _last_incoming_video.image,
+ _last_incoming_video.eyes,
+ _last_incoming_video.same,
+ _last_incoming_video.frame,
+ _last_incoming_video.extra
+ );
+
+ return true;
+}
+
+PlayerImage::PlayerImage (
+ shared_ptr<const Image> in,
+ Crop crop,
+ libdcp::Size inter_size,
+ libdcp::Size out_size,
+ Scaler const * scaler
+ )
+ : _in (in)
+ , _crop (crop)
+ , _inter_size (inter_size)
+ , _out_size (out_size)
+ , _scaler (scaler)
+{
+
}
void
-Player::playlist_changed ()
+PlayerImage::set_subtitle (shared_ptr<const Image> image, Position<int> pos)
{
- _have_valid_decoders = false;
+ _subtitle_image = image;
+ _subtitle_position = pos;
+}
+
+shared_ptr<Image>
+PlayerImage::image ()
+{
+ shared_ptr<Image> out = _in->crop_scale_window (_crop, _inter_size, _out_size, _scaler, PIX_FMT_RGB24, false);
+
+ Position<int> const container_offset ((_out_size.width - _inter_size.width) / 2, (_out_size.height - _inter_size.width) / 2);
+
+ if (_subtitle_image) {
+ out->alpha_blend (_subtitle_image, _subtitle_position);
+ }
+
+ return out;
}
projects / dcpomatic.git / blobdiff