1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/*
Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file src/decoder.h
* @brief Decoder class.
*/
#ifndef DCPOMATIC_DECODER_H
#define DCPOMATIC_DECODER_H
#include "types.h"
#include "dcpomatic_time.h"
#include <boost/utility.hpp>
class Decoded;
/** @class Decoder.
* @brief Parent class for decoders of content.
*/
class Decoder : public boost::noncopyable
{
public:
virtual ~Decoder () {}
protected:
friend class AudioDecoderStream;
/** Seek so that the next pass() will yield the next thing
* (video/sound frame, subtitle etc.) at or after the requested
* time. Pass accurate = true to try harder to ensure that, at worst,
* the next thing we yield comes before `time'. This may entail
* seeking some way before `time' to be on the safe side.
* Alternatively, if seeking is 100% accurate for this decoder,
* it may seek to just the right spot.
*/
virtual void seek (ContentTime time, bool accurate) = 0;
enum PassReason {
PASS_REASON_VIDEO,
PASS_REASON_AUDIO,
PASS_REASON_SUBTITLE
};
virtual bool pass (PassReason, bool accurate) = 0;
};
#endif
|
