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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
Copyright (C) 2012 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.
*/
#ifndef DVDOMATIC_VIDEO_DECODER_H
#define DVDOMATIC_VIDEO_DECODER_H
#include "video_source.h"
#include "stream.h"
#include "decoder.h"
class VideoDecoder : public VideoSource, public virtual Decoder
{
public:
VideoDecoder (boost::shared_ptr<Film>, DecodeOptions);
/** @return video frames per second, or 0 if unknown */
virtual float frames_per_second () const = 0;
/** @return native size in pixels */
virtual libdcp::Size native_size () const = 0;
/** @return length (in source video frames), according to our content's header */
virtual SourceFrame length () const = 0;
virtual int time_base_numerator () const = 0;
virtual int time_base_denominator () const = 0;
virtual int sample_aspect_ratio_numerator () const = 0;
virtual int sample_aspect_ratio_denominator () const = 0;
virtual void set_subtitle_stream (boost::shared_ptr<SubtitleStream>);
void set_progress (Job *) const;
int video_frame () const {
return _video_frame;
}
boost::shared_ptr<SubtitleStream> subtitle_stream () const {
return _subtitle_stream;
}
std::vector<boost::shared_ptr<SubtitleStream> > subtitle_streams () const {
return _subtitle_streams;
}
double last_source_time () const {
return _last_source_time;
}
protected:
virtual PixelFormat pixel_format () const = 0;
void emit_video (boost::shared_ptr<Image>, double);
void emit_subtitle (boost::shared_ptr<TimedSubtitle>);
void repeat_last_video ();
/** Subtitle stream to use when decoding */
boost::shared_ptr<SubtitleStream> _subtitle_stream;
/** Subtitle streams that this decoder's content has */
std::vector<boost::shared_ptr<SubtitleStream> > _subtitle_streams;
private:
void signal_video (boost::shared_ptr<Image>, bool, boost::shared_ptr<Subtitle>);
int _video_frame;
double _last_source_time;
boost::shared_ptr<TimedSubtitle> _timed_subtitle;
boost::shared_ptr<Image> _last_image;
boost::shared_ptr<Subtitle> _last_subtitle;
};
#endif
|
