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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_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 ()) {
_positions[i] = 0;
}
}
void
AudioDecoder::emit (AudioStreamPtr stream, shared_ptr<const AudioBuffers> data, ContentTime time)
{
if (ignore ()) {
return;
}
if (_positions[stream] == 0) {
_positions[stream] = time.frames_round (stream->frame_rate ());
}
Data (stream, ContentAudio (data, _positions[stream]));
_positions[stream] += data->frames();
}
ContentTime
AudioDecoder::position () const
{
optional<ContentTime> p;
for (map<AudioStreamPtr, Frame>::const_iterator i = _positions.begin(); i != _positions.end(); ++i) {
ContentTime const ct = ContentTime::from_frames (i->second, i->first->frame_rate ());
if (!p || ct < *p) {
p = ct;
}
}
return p.get_value_or(ContentTime());
}
void
AudioDecoder::seek ()
{
for (map<AudioStreamPtr, Frame>::iterator i = _positions.begin(); i != _positions.end(); ++i) {
i->second = 0;
}
}
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