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/>.
22 /** @file src/lib/audio_decoder.h
23 * @brief Parent class for audio decoders.
27 #ifndef DCPOMATIC_AUDIO_DECODER_H
28 #define DCPOMATIC_AUDIO_DECODER_H
32 #include "content_audio.h"
33 #include "audio_stream.h"
34 #include "decoder_part.h"
35 #include <boost/signals2.hpp>
40 class AudioDecoderStream;
46 /** @class AudioDecoder.
47 * @brief Parent class for audio decoders.
49 class AudioDecoder : public std::enable_shared_from_this<AudioDecoder>, public DecoderPart
52 AudioDecoder (Decoder* parent, std::shared_ptr<const AudioContent> content, bool fast);
54 boost::optional<dcpomatic::ContentTime> position (std::shared_ptr<const Film> film) const;
55 void emit (std::shared_ptr<const Film> film, AudioStreamPtr stream, std::shared_ptr<const AudioBuffers>, dcpomatic::ContentTime, bool time_already_delayed = false);
59 dcpomatic::ContentTime stream_position (std::shared_ptr<const Film> film, AudioStreamPtr stream) const;
61 boost::signals2::signal<void (AudioStreamPtr, ContentAudio)> Data;
64 void silence (int milliseconds);
66 std::shared_ptr<const AudioContent> _content;
67 /** Frame after the last one that was emitted from Data (i.e. at the resampled rate, if applicable)
68 * for each AudioStream.
70 typedef std::map<AudioStreamPtr, Frame> PositionMap;
71 PositionMap _positions;
72 typedef std::map<AudioStreamPtr, std::shared_ptr<Resampler>> ResamplerMap;
73 ResamplerMap _resamplers;