2 Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/lib/audio_decoder.h
21 * @brief Parent class for audio decoders.
24 #ifndef DCPOMATIC_AUDIO_DECODER_H
25 #define DCPOMATIC_AUDIO_DECODER_H
29 #include "audio_content.h"
30 #include "content_audio.h"
31 #include <boost/enable_shared_from_this.hpp>
34 class AudioDecoderStream;
36 /** @class AudioDecoder.
37 * @brief Parent class for audio decoders.
39 class AudioDecoder : public virtual Decoder, public boost::enable_shared_from_this<AudioDecoder>
42 AudioDecoder (boost::shared_ptr<const AudioContent>);
44 boost::shared_ptr<const AudioContent> audio_content () const {
45 return _audio_content;
48 /** Try to fetch some audio from a specific place in this content.
49 * @param frame Frame to start from (after resampling, if applicable)
50 * @param length Frames to get (after resampling, if applicable)
51 * @param accurate true to try hard to return frames from exactly `frame', false if we don't mind nearby frames.
52 * @return Time-stamped audio data which may or may not be from the location (and of the length) requested.
54 ContentAudio get_audio (AudioStreamPtr stream, Frame time, Frame length, bool accurate);
57 void audio (AudioStreamPtr stream, boost::shared_ptr<const AudioBuffers>, ContentTime);
59 void seek (ContentTime t, bool accurate);
62 boost::shared_ptr<const AudioContent> _audio_content;
63 /** An AudioDecoderStream object to manage each stream in _audio_content */
64 std::map<AudioStreamPtr, boost::shared_ptr<AudioDecoderStream> > _streams;