2 Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 #include "audio_decoder.h"
22 #include "audio_buffers.h"
23 #include "audio_decoder_stream.h"
24 #include "audio_content.h"
25 #include <boost/foreach.hpp>
32 using boost::shared_ptr;
34 AudioDecoder::AudioDecoder (Decoder* parent, shared_ptr<const AudioContent> content, shared_ptr<Log> log)
37 BOOST_FOREACH (AudioStreamPtr i, content->streams ()) {
38 _streams[i] = shared_ptr<AudioDecoderStream> (new AudioDecoderStream (content, i, parent, log));
43 AudioDecoder::get (AudioStreamPtr stream, Frame frame, Frame length, bool accurate)
45 return _streams[stream]->get (frame, length, accurate);
49 AudioDecoder::give (AudioStreamPtr stream, shared_ptr<const AudioBuffers> data, ContentTime time)
55 if (_streams.find (stream) == _streams.end ()) {
57 /* This method can be called with an unknown stream during the following sequence:
58 - Add KDM to some DCP content.
59 - Content gets re-examined.
60 - SingleStreamAudioContent::take_from_audio_examiner creates a new stream.
61 - Some content property change signal is delivered so Player::Changed is emitted.
62 - Film viewer to re-gets the frame.
63 - Player calls DCPDecoder pass which calls this method on the new stream.
65 At this point the AudioDecoder does not know about the new stream.
68 - Some other property change signal is delivered which marks the player's pieces invalid.
69 - Film viewer re-gets again.
72 In this situation it is fine for us to silently drop the audio.
78 _streams[stream]->audio (data, time);
82 AudioDecoder::flush ()
84 for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
90 AudioDecoder::seek (ContentTime t, bool accurate)
92 for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
93 i->second->seek (t, accurate);
97 /** Set this decoder never to produce any data */
99 AudioDecoder::set_ignore ()
105 AudioDecoder::set_fast ()
107 for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
108 i->second->set_fast ();