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/*
Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "audio_decoder.h"
#include "audio_buffers.h"
#include "audio_decoder_stream.h"
#include "audio_content.h"
#include <boost/foreach.hpp>
#include <iostream>
#include "i18n.h"
using std::cout;
using std::map;
using boost::shared_ptr;
AudioDecoder::AudioDecoder (Decoder* parent, shared_ptr<const AudioContent> content, bool fast, shared_ptr<Log> log)
: _ignore (false)
, _fast (fast)
{
BOOST_FOREACH (AudioStreamPtr i, content->streams ()) {
_streams[i] = shared_ptr<AudioDecoderStream> (new AudioDecoderStream (content, i, parent, fast, log));
}
}
ContentAudio
AudioDecoder::get (AudioStreamPtr stream, Frame frame, Frame length, bool accurate)
{
return _streams[stream]->get (frame, length, accurate);
}
void
AudioDecoder::give (AudioStreamPtr stream, shared_ptr<const AudioBuffers> data, ContentTime time)
{
if (_ignore) {
return;
}
if (_streams.find (stream) == _streams.end ()) {
/* This method can be called with an unknown stream during the following sequence:
- Add KDM to some DCP content.
- Content gets re-examined.
- SingleStreamAudioContent::take_from_audio_examiner creates a new stream.
- Some content property change signal is delivered so Player::Changed is emitted.
- Film viewer to re-gets the frame.
- Player calls DCPDecoder pass which calls this method on the new stream.
At this point the AudioDecoder does not know about the new stream.
Then
- Some other property change signal is delivered which marks the player's pieces invalid.
- Film viewer re-gets again.
- Everything is OK.
In this situation it is fine for us to silently drop the audio.
*/
return;
}
_streams[stream]->audio (data, time);
}
void
AudioDecoder::flush ()
{
for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
i->second->flush ();
}
}
void
AudioDecoder::seek (ContentTime t, bool accurate)
{
for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
i->second->seek (t, accurate);
}
}
/** Set this decoder never to produce any data */
void
AudioDecoder::set_ignore ()
{
_ignore = true;
}
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