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 ()) {
79 /* Run video decoder; this may also produce audio */
81 if ((*_video_decoder)->pass ()) {
85 if (_video_decoder != _video_decoders.end ()) {
89 } else if (!_video && _playlist->audio_from() == Playlist::AUDIO_FFMPEG && _sequential_audio_decoder != _audio_decoders.end ()) {
91 /* We're not producing video, so we may need to run FFmpeg content to get the audio */
93 if ((*_sequential_audio_decoder)->pass ()) {
94 _sequential_audio_decoder++;
97 if (_sequential_audio_decoder != _audio_decoders.end ()) {
101 } else if (_playlist->audio_from() == Playlist::AUDIO_SNDFILE) {
103 /* We're getting audio from SndfileContent */
105 for (list<shared_ptr<AudioDecoder> >::iterator i = _audio_decoders.begin(); i != _audio_decoders.end(); ++i) {
106 if (!(*i)->pass ()) {
111 Audio (_audio_buffers, _audio_time.get());
112 _audio_buffers.reset ();
113 _audio_time = boost::none;
120 Player::set_progress (shared_ptr<Job> job)
122 /* Assume progress can be divined from how far through the video we are */
124 if (_video_decoder == _video_decoders.end() || !_playlist->video_length()) {
128 ContentVideoFrame p = 0;
129 list<shared_ptr<VideoDecoder> >::iterator i = _video_decoders.begin ();
130 while (i != _video_decoders.end() && i != _video_decoder) {
131 p += (*i)->video_length ();
134 job->set_progress (float ((*_video_decoder)->video_frame ()) / _playlist->video_length ());
138 Player::process_video (shared_ptr<Image> i, bool same, shared_ptr<Subtitle> s, double t)
140 /* XXX: this time will need mangling to add on the offset of the start of the content */
141 Video (i, same, s, t);
145 Player::process_audio (weak_ptr<const AudioContent> c, shared_ptr<AudioBuffers> b, double t)
147 /* XXX: this time will need mangling to add on the offset of the start of the content */
148 AudioMapping mapping = _film->audio_mapping ();
149 if (!_audio_buffers) {
150 _audio_buffers.reset (new AudioBuffers (mapping.dcp_channels(), b->frames ()));
151 _audio_buffers->make_silent ();
155 for (int i = 0; i < b->channels(); ++i) {
156 list<libdcp::Channel> dcp = mapping.content_to_dcp (AudioMapping::Channel (c, i));
157 for (list<libdcp::Channel>::iterator j = dcp.begin(); j != dcp.end(); ++j) {
158 _audio_buffers->accumulate (b, i, static_cast<int> (*j));
162 if (_playlist->audio_from() == Playlist::AUDIO_FFMPEG) {
163 /* We can just emit this audio now as it will all be here */
164 Audio (_audio_buffers, t);
165 _audio_buffers.reset ();
166 _audio_time = boost::none;
170 /** @return true on error */
172 Player::seek (double t)
174 if (!_have_valid_decoders) {
176 _have_valid_decoders = true;
179 /* Find the decoder that contains this position */
180 _video_decoder = _video_decoders.begin ();
181 while (_video_decoder != _video_decoders.end ()) {
182 double const this_length = double ((*_video_decoder)->video_length()) / _film->video_frame_rate ();
183 if (t < this_length) {
190 if (_video_decoder != _video_decoders.end()) {
191 (*_video_decoder)->seek (t);
196 /* XXX: don't seek audio because we don't need to... */
209 Player::seek_forward ()
216 Player::setup_decoders ()
218 _video_decoders.clear ();
219 _video_decoder = _video_decoders.end ();
220 _audio_decoders.clear ();
223 list<shared_ptr<const VideoContent> > vc = _playlist->video ();
224 for (list<shared_ptr<const VideoContent> >::iterator i = vc.begin(); i != vc.end(); ++i) {
226 shared_ptr<VideoDecoder> d;
228 /* XXX: into content? */
230 shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (*i);
232 shared_ptr<FFmpegDecoder> fd (
235 _audio && _playlist->audio_from() == Playlist::AUDIO_FFMPEG,
240 if (_playlist->audio_from() == Playlist::AUDIO_FFMPEG) {
241 fd->Audio.connect (bind (&Player::process_audio, this, fc, _1, _2));
247 shared_ptr<const ImageMagickContent> ic = dynamic_pointer_cast<const ImageMagickContent> (*i);
249 d.reset (new ImageMagickDecoder (_film, ic));
252 d->connect_video (shared_from_this ());
253 _video_decoders.push_back (d);
256 _video_decoder = _video_decoders.begin ();
259 if (_playlist->audio_from() == Playlist::AUDIO_FFMPEG && !_video) {
261 /* If we're getting audio from FFmpegContent but not the video, we need a set
262 of decoders for the audio.
265 list<shared_ptr<const AudioContent> > ac = _playlist->audio ();
266 for (list<shared_ptr<const AudioContent> >::iterator i = ac.begin(); i != ac.end(); ++i) {
268 shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<const FFmpegContent> (*i);
271 shared_ptr<AudioDecoder> d (
274 _audio && _playlist->audio_from() == Playlist::AUDIO_FFMPEG,
279 d->Audio.connect (bind (&Player::process_audio, this, fc, _1, _2));
280 _audio_decoders.push_back (d);
283 _sequential_audio_decoder = _audio_decoders.begin ();
286 if (_playlist->audio_from() == Playlist::AUDIO_SNDFILE) {
288 list<shared_ptr<const AudioContent> > ac = _playlist->audio ();
289 for (list<shared_ptr<const AudioContent> >::iterator i = ac.begin(); i != ac.end(); ++i) {
291 shared_ptr<const SndfileContent> sc = dynamic_pointer_cast<const SndfileContent> (*i);
294 shared_ptr<AudioDecoder> d (new SndfileDecoder (_film, sc));
295 d->Audio.connect (bind (&Player::process_audio, this, sc, _1, _2));
296 _audio_decoders.push_back (d);
302 Player::last_video_time () const
305 for (list<shared_ptr<VideoDecoder> >::const_iterator i = _video_decoders.begin(); i != _video_decoder; ++i) {
306 t += (*i)->video_length() / (*i)->video_frame_rate ();
309 return t + (*_video_decoder)->last_content_time ();
313 Player::content_changed (weak_ptr<Content> w, int p)
315 shared_ptr<Content> c = w.lock ();
320 if (p == VideoContentProperty::VIDEO_LENGTH) {
321 if (dynamic_pointer_cast<FFmpegContent> (c)) {
322 /* FFmpeg content length changes are serious; we need new decoders */
323 _have_valid_decoders = false;
329 Player::playlist_changed ()
331 _have_valid_decoders = false;