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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 "log.h"
#include "compose.hpp"
#include <boost/foreach.hpp>
#include <iostream>
#include "i18n.h"
using std::cout;
using std::map;
using boost::shared_ptr;
using boost::optional;
AudioDecoder::AudioDecoder (Decoder* parent, shared_ptr<const AudioContent> content, shared_ptr<Log> log)
: DecoderPart (parent, log)
{
BOOST_FOREACH (AudioStreamPtr i, content->streams ()) {
_streams[i] = shared_ptr<AudioDecoderStream> (new AudioDecoderStream (content, i, parent, this, log));
}
}
void
AudioDecoder::emit (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 (StreamMap::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
i->second->flush ();
}
}
void
AudioDecoder::set_fast ()
{
for (StreamMap::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
i->second->set_fast ();
}
}
optional<ContentTime>
AudioDecoder::position () const
{
optional<ContentTime> pos;
for (StreamMap::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
if (!pos || (i->second->position() && i->second->position().get() < pos.get())) {
pos = i->second->position();
}
}
return pos;
}
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