2 Copyright (C) 2012-2015 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/decoder.h
21 * @brief Decoder class.
24 #ifndef DCPOMATIC_DECODER_H
25 #define DCPOMATIC_DECODER_H
28 #include "dcpomatic_time.h"
29 #include <boost/utility.hpp>
34 class SubtitleDecoder;
37 * @brief Parent class for decoders of content.
39 class Decoder : public boost::noncopyable
42 virtual ~Decoder () {}
44 boost::shared_ptr<VideoDecoder> video;
45 boost::shared_ptr<AudioDecoder> audio;
46 boost::shared_ptr<SubtitleDecoder> subtitle;
54 /** Seek so that the next pass() will yield the next thing
55 * (video/sound frame, subtitle etc.) at or after the requested
56 * time. Pass accurate = true to try harder to ensure that, at worst,
57 * the next thing we yield comes before `time'. This may entail
58 * seeking some way before `time' to be on the safe side.
59 * Alternatively, if seeking is 100% accurate for this decoder,
60 * it may seek to just the right spot.
62 virtual void seek (ContentTime time, bool accurate) = 0;
64 /** @return true if this decoder has already returned all its data and will give no more */
65 virtual bool pass (PassReason, bool accurate) = 0;