2 Copyright (C) 2012-2018 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 /** @file src/lib/audio_decoder.h
22 * @brief Parent class for audio decoders.
25 #ifndef DCPOMATIC_AUDIO_DECODER_H
26 #define DCPOMATIC_AUDIO_DECODER_H
29 #include "content_audio.h"
30 #include "audio_stream.h"
31 #include "decoder_part.h"
32 #include <boost/enable_shared_from_this.hpp>
33 #include <boost/signals2.hpp>
37 class AudioDecoderStream;
41 /** @class AudioDecoder.
42 * @brief Parent class for audio decoders.
44 class AudioDecoder : public boost::enable_shared_from_this<AudioDecoder>, public DecoderPart
47 AudioDecoder (Decoder* parent, boost::shared_ptr<const AudioContent> content, boost::shared_ptr<Log> log, bool fast);
49 ContentTime position () const;
50 void emit (AudioStreamPtr stream, boost::shared_ptr<const AudioBuffers>, ContentTime);
54 ContentTime stream_position (AudioStreamPtr stream) const;
56 /** @return Number of frames of data that were accepted */
57 boost::signals2::signal<void (AudioStreamPtr, ContentAudio)> Data;
60 void silence (int milliseconds);
62 boost::shared_ptr<const AudioContent> _content;
63 /** Frame after the last one that was emitted from Data (i.e. at the resampled rate, if applicable)
64 * for each AudioStream.
66 typedef std::map<AudioStreamPtr, Frame> PositionMap;
67 PositionMap _positions;
68 typedef std::map<AudioStreamPtr, boost::shared_ptr<Resampler> > ResamplerMap;
69 ResamplerMap _resamplers;