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-rw-r--r--src/lib/player.cc338
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diff --git a/src/lib/player.cc b/src/lib/player.cc
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+++ b/src/lib/player.cc
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+/*
+ Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "player.h"
+#include "film.h"
+#include "ffmpeg_decoder.h"
+#include "imagemagick_decoder.h"
+#include "sndfile_decoder.h"
+#include "sndfile_content.h"
+#include "playlist.h"
+#include "job.h"
+
+using std::list;
+using std::cout;
+using boost::shared_ptr;
+using boost::weak_ptr;
+using boost::dynamic_pointer_cast;
+
+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)
+{
+ _playlist->Changed.connect (bind (&Player::playlist_changed, this));
+ _playlist->ContentChanged.connect (bind (&Player::content_changed, this, _1, _2));
+}
+
+void
+Player::disable_video ()
+{
+ _video = false;
+}
+
+void
+Player::disable_audio ()
+{
+ _audio = false;
+}
+
+void
+Player::disable_subtitles ()
+{
+ _subtitles = false;
+}
+
+bool
+Player::pass ()
+{
+ if (!_have_valid_decoders) {
+ setup_decoders ();
+ _have_valid_decoders = true;
+ }
+
+ 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;
+ }
+ }
+ }
+
+ if (_playlist->video_from() == Playlist::VIDEO_IMAGEMAGICK) {
+ if (_imagemagick_decoder != _imagemagick_decoders.end ()) {
+ if ((*_imagemagick_decoder)->pass ()) {
+ _imagemagick_decoder++;
+ }
+
+ if (_imagemagick_decoder != _imagemagick_decoders.end ()) {
+ done = false;
+ }
+ }
+ }
+
+ if (_playlist->audio_from() == Playlist::AUDIO_SNDFILE) {
+ for (list<shared_ptr<SndfileDecoder> >::iterator i = _sndfile_decoders.begin(); i != _sndfile_decoders.end(); ++i) {
+ if (!(*i)->pass ()) {
+ done = false;
+ }
+ }
+
+ Audio (_sndfile_buffers);
+ _sndfile_buffers.reset ();
+ }
+
+ return done;
+}
+
+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 ());
+ }
+ 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 ());
+ }
+ ++n;
+ }
+ break;
+ }
+ }
+}
+
+void
+Player::process_video (shared_ptr<Image> i, bool same, shared_ptr<Subtitle> s)
+{
+ Video (i, same, s);
+}
+
+void
+Player::process_audio (weak_ptr<const AudioContent> c, shared_ptr<AudioBuffers> b)
+{
+ if (_playlist->audio_from() == Playlist::AUDIO_SNDFILE) {
+ AudioMapping mapping = _film->audio_mapping ();
+ if (!_sndfile_buffers) {
+ _sndfile_buffers.reset (new AudioBuffers (mapping.dcp_channels(), b->frames ()));
+ _sndfile_buffers->make_silent ();
+ }
+
+ for (int i = 0; i < b->channels(); ++i) {
+ list<libdcp::Channel> dcp = mapping.content_to_dcp (AudioMapping::Channel (c, i));
+ for (list<libdcp::Channel>::iterator j = dcp.begin(); j != dcp.end(); ++j) {
+ _sndfile_buffers->accumulate (b, i, static_cast<int> (*j));
+ }
+ }
+
+ } else {
+ Audio (b);
+ }
+}
+
+/** @return true on error */
+bool
+Player::seek (double t)
+{
+ if (!_have_valid_decoders) {
+ setup_decoders ();
+ _have_valid_decoders = true;
+ }
+
+ bool r = false;
+
+ 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;
+ }
+
+ if (_imagemagick_decoder != _imagemagick_decoders.end()) {
+ (*_imagemagick_decoder)->seek (t);
+ } else {
+ r = true;
+ }
+ break;
+ }
+
+ /* XXX: don't seek audio because we don't need to... */
+
+ return r;
+}
+
+bool
+Player::seek_to_last ()
+{
+ if (!_have_valid_decoders) {
+ setup_decoders ();
+ _have_valid_decoders = true;
+ }
+
+ bool r = false;
+
+ switch (_playlist->video_from ()) {
+ case Playlist::VIDEO_NONE:
+ break;
+ case Playlist::VIDEO_FFMPEG:
+ if (!_ffmpeg_decoder || _ffmpeg_decoder->seek_to_last ()) {
+ r = true;
+ }
+
+ /* 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;
+ }
+ break;
+ }
+
+ /* XXX: don't seek audio because we don't need to... */
+
+ return r;
+}
+
+void
+Player::setup_decoders ()
+{
+ 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
+ )
+ );
+ }
+
+ if (_video && _playlist->video_from() == Playlist::VIDEO_FFMPEG) {
+ _ffmpeg_decoder->connect_video (shared_from_this ());
+ }
+
+ if (_audio && _playlist->audio_from() == Playlist::AUDIO_FFMPEG) {
+ _ffmpeg_decoder->Audio.connect (bind (&Player::process_audio, this, _playlist->ffmpeg (), _1));
+ }
+
+ 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 ());
+ }
+
+ _imagemagick_decoder = _imagemagick_decoders.begin ();
+ }
+
+ 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->Audio.connect (bind (&Player::process_audio, this, *i, _1));
+ }
+ }
+}
+
+void
+Player::disable_video_sync ()
+{
+ _video_sync = false;
+}
+
+double
+Player::last_video_time () const
+{
+ 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 ();
+ }
+
+ return t + (*_imagemagick_decoder)->last_source_time ();
+ }
+ }
+
+ return 0;
+}
+
+void
+Player::content_changed (weak_ptr<Content> w, int p)
+{
+ shared_ptr<Content> c = w.lock ();
+ if (!c) {
+ return;
+ }
+
+ if (p == VideoContentProperty::VIDEO_LENGTH) {
+ if (dynamic_pointer_cast<FFmpegContent> (c)) {
+ _have_valid_decoders = false;
+ }
+ }
+}
+
+void
+Player::playlist_changed ()
+{
+ _have_valid_decoders = false;
+}
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