2 Copyright (C) 2012-2015 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.
20 #include "audio_decoder.h"
21 #include "audio_buffers.h"
22 #include "audio_decoder_stream.h"
23 #include "audio_content.h"
24 #include <boost/foreach.hpp>
31 using boost::shared_ptr;
33 AudioDecoder::AudioDecoder (shared_ptr<const AudioContent> content)
34 : _audio_content (content)
36 BOOST_FOREACH (AudioStreamPtr i, content->audio_streams ()) {
37 _streams[i] = shared_ptr<AudioDecoderStream> (new AudioDecoderStream (_audio_content, i, this));
42 AudioDecoder::get_audio (AudioStreamPtr stream, Frame frame, Frame length, bool accurate)
44 return _streams[stream]->get (frame, length, accurate);
48 AudioDecoder::audio (AudioStreamPtr stream, shared_ptr<const AudioBuffers> data, ContentTime time)
50 if (_streams.find (stream) == _streams.end ()) {
52 /* This method can be called with an unknown stream during the following sequence:
53 - Add KDM to some DCP content.
54 - Content gets re-examined.
55 - SingleStreamAudioContent::take_from_audio_examiner creates a new stream.
56 - Some content property change signal is delivered so Player::Changed is emitted.
57 - Film viewer to re-gets the frame.
58 - Player calls DCPDecoder pass which calls this method on the new stream.
60 At this point the AudioDecoder does not know about the new stream.
63 - Some other property change signal is delivered which marks the player's pieces invalid.
64 - Film viewer re-gets again.
67 In this situation it is fine for us to silently drop the audio.
73 _streams[stream]->audio (data, time);
77 AudioDecoder::flush ()
79 for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
85 AudioDecoder::seek (ContentTime t, bool accurate)
87 for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
88 i->second->seek (t, accurate);