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>
26 #include <boost/make_shared.hpp>
33 using boost::shared_ptr;
34 using boost::make_shared;
36 AudioDecoder::AudioDecoder (Decoder* parent, shared_ptr<const AudioContent> content, bool fast, shared_ptr<Log> log)
40 BOOST_FOREACH (AudioStreamPtr i, content->streams ()) {
41 _streams[i] = make_shared<AudioDecoderStream> (content, i, parent, fast, log);
46 AudioDecoder::get (AudioStreamPtr stream, Frame frame, Frame length, bool accurate)
48 return _streams[stream]->get (frame, length, accurate);
52 AudioDecoder::give (AudioStreamPtr stream, shared_ptr<const AudioBuffers> data, ContentTime time)
58 if (_streams.find (stream) == _streams.end ()) {
60 /* This method can be called with an unknown stream during the following sequence:
61 - Add KDM to some DCP content.
62 - Content gets re-examined.
63 - SingleStreamAudioContent::take_from_audio_examiner creates a new stream.
64 - Some content property change signal is delivered so Player::Changed is emitted.
65 - Film viewer to re-gets the frame.
66 - Player calls DCPDecoder pass which calls this method on the new stream.
68 At this point the AudioDecoder does not know about the new stream.
71 - Some other property change signal is delivered which marks the player's pieces invalid.
72 - Film viewer re-gets again.
75 In this situation it is fine for us to silently drop the audio.
81 _streams[stream]->audio (data, time);
85 AudioDecoder::flush ()
87 for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
93 AudioDecoder::seek (ContentTime t, bool accurate)
95 for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
96 i->second->seek (t, accurate);
100 /** Set this decoder never to produce any data */
102 AudioDecoder::set_ignore ()