2 Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include "ffmpeg_decoder.h"
23 #include "ffmpeg_content.h"
24 #include "imagemagick_decoder.h"
25 #include "imagemagick_content.h"
26 #include "sndfile_decoder.h"
27 #include "sndfile_content.h"
33 using boost::shared_ptr;
34 using boost::weak_ptr;
35 using boost::dynamic_pointer_cast;
37 Player::Player (shared_ptr<const Film> f, shared_ptr<const Playlist> p)
43 , _have_valid_decoders (false)
45 _playlist->Changed.connect (bind (&Player::playlist_changed, this));
46 _playlist->ContentChanged.connect (bind (&Player::content_changed, this, _1, _2));
50 Player::disable_video ()
56 Player::disable_audio ()
62 Player::disable_subtitles ()
70 if (!_have_valid_decoders) {
72 _have_valid_decoders = true;
77 if (_video_decoder != _video_decoders.end ()) {
78 if ((*_video_decoder)->pass ()) {
82 if (_video_decoder != _video_decoders.end ()) {
87 if (_playlist->audio_from() == Playlist::AUDIO_SNDFILE) {
88 for (list<shared_ptr<SndfileDecoder> >::iterator i = _sndfile_decoders.begin(); i != _sndfile_decoders.end(); ++i) {
94 Audio (_audio_buffers, _audio_time.get());
95 _audio_buffers.reset ();
96 _audio_time = boost::none;
103 Player::set_progress (shared_ptr<Job> job)
105 /* Assume progress can be divined from how far through the video we are */
107 if (_video_decoder == _video_decoders.end() || !_playlist->video_length()) {
111 ContentVideoFrame p = 0;
112 list<shared_ptr<VideoDecoder> >::iterator i = _video_decoders.begin ();
113 while (i != _video_decoders.end() && i != _video_decoder) {
114 p += (*i)->video_length ();
117 job->set_progress (float ((*_video_decoder)->video_frame ()) / _playlist->video_length ());
121 Player::process_video (shared_ptr<Image> i, bool same, shared_ptr<Subtitle> s, double t)
123 /* XXX: this time will need mangling to add on the offset of the start of the content */
124 Video (i, same, s, t);
128 Player::process_audio (weak_ptr<const AudioContent> c, shared_ptr<AudioBuffers> b, double t)
130 /* XXX: this time will need mangling to add on the offset of the start of the content */
131 AudioMapping mapping = _film->audio_mapping ();
132 if (!_audio_buffers) {
133 _audio_buffers.reset (new AudioBuffers (mapping.dcp_channels(), b->frames ()));
134 _audio_buffers->make_silent ();
138 for (int i = 0; i < b->channels(); ++i) {
139 list<libdcp::Channel> dcp = mapping.content_to_dcp (AudioMapping::Channel (c, i));
140 for (list<libdcp::Channel>::iterator j = dcp.begin(); j != dcp.end(); ++j) {
141 _audio_buffers->accumulate (b, i, static_cast<int> (*j));
145 if (_playlist->audio_from() == Playlist::AUDIO_FFMPEG) {
146 /* We can just emit this audio now as it will all be here */
147 Audio (_audio_buffers, t);
148 _audio_buffers.reset ();
149 _audio_time = boost::none;
153 /** @return true on error */
155 Player::seek (double t)
157 if (!_have_valid_decoders) {
159 _have_valid_decoders = true;
162 /* Find the decoder that contains this position */
163 _video_decoder = _video_decoders.begin ();
164 while (_video_decoder != _video_decoders.end ()) {
165 double const this_length = double ((*_video_decoder)->video_length()) / _film->video_frame_rate ();
166 if (t < this_length) {
173 if (_video_decoder != _video_decoders.end()) {
174 (*_video_decoder)->seek (t);
179 /* XXX: don't seek audio because we don't need to... */
192 Player::seek_forward ()
199 Player::setup_decoders ()
201 _video_decoders.clear ();
202 _video_decoder = _video_decoders.end ();
203 _sndfile_decoders.clear ();
206 list<shared_ptr<const VideoContent> > vc = _playlist->video ();
207 for (list<shared_ptr<const VideoContent> >::iterator i = vc.begin(); i != vc.end(); ++i) {
209 shared_ptr<VideoDecoder> d;
211 /* XXX: into content? */
213 shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (*i);
215 shared_ptr<FFmpegDecoder> fd (
218 _audio && _playlist->audio_from() == Playlist::AUDIO_FFMPEG,
223 if (_playlist->audio_from() == Playlist::AUDIO_FFMPEG) {
224 fd->Audio.connect (bind (&Player::process_audio, this, fc, _1, _2));
230 shared_ptr<const ImageMagickContent> ic = dynamic_pointer_cast<const ImageMagickContent> (*i);
232 d.reset (new ImageMagickDecoder (_film, ic));
235 d->connect_video (shared_from_this ());
236 _video_decoders.push_back (d);
239 _video_decoder = _video_decoders.begin ();
242 if (_audio && _playlist->audio_from() == Playlist::AUDIO_SNDFILE) {
243 list<shared_ptr<const SndfileContent> > sc = _playlist->sndfile ();
244 for (list<shared_ptr<const SndfileContent> >::iterator i = sc.begin(); i != sc.end(); ++i) {
245 shared_ptr<SndfileDecoder> d (new SndfileDecoder (_film, *i));
246 _sndfile_decoders.push_back (d);
247 d->Audio.connect (bind (&Player::process_audio, this, *i, _1, _2));
253 Player::last_video_time () const
256 for (list<shared_ptr<VideoDecoder> >::const_iterator i = _video_decoders.begin(); i != _video_decoder; ++i) {
257 t += (*i)->video_length() / (*i)->video_frame_rate ();
260 return t + (*_video_decoder)->last_content_time ();
264 Player::content_changed (weak_ptr<Content> w, int p)
266 shared_ptr<Content> c = w.lock ();
271 if (p == VideoContentProperty::VIDEO_LENGTH) {
272 if (dynamic_pointer_cast<FFmpegContent> (c)) {
273 /* FFmpeg content length changes are serious; we need new decoders */
274 _have_valid_decoders = false;
280 Player::playlist_changed ()
282 _have_valid_decoders = false;