2 Copyright (C) 2012 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 #ifndef DVDOMATIC_VIDEO_DECODER_H
21 #define DVDOMATIC_VIDEO_DECODER_H
23 #include "video_source.h"
27 class VideoDecoder : public VideoSource, public virtual Decoder
30 VideoDecoder (boost::shared_ptr<Film>, boost::shared_ptr<const Options>, Job *);
32 /** @return video frames per second, or 0 if unknown */
33 virtual float frames_per_second () const = 0;
34 /** @return native size in pixels */
35 virtual Size native_size () const = 0;
37 virtual int time_base_numerator () const = 0;
38 virtual int time_base_denominator () const = 0;
39 virtual int sample_aspect_ratio_numerator () const = 0;
40 virtual int sample_aspect_ratio_denominator () const = 0;
42 virtual void set_subtitle_stream (boost::shared_ptr<SubtitleStream>);
44 void set_progress () const;
46 SourceFrame video_frame () const {
50 boost::shared_ptr<SubtitleStream> subtitle_stream () const {
51 return _subtitle_stream;
54 std::vector<boost::shared_ptr<SubtitleStream> > subtitle_streams () const {
55 return _subtitle_streams;
60 virtual PixelFormat pixel_format () const = 0;
62 void emit_video (boost::shared_ptr<Image>);
63 void emit_subtitle (boost::shared_ptr<TimedSubtitle>);
64 void repeat_last_video ();
66 /** Subtitle stream to use when decoding */
67 boost::shared_ptr<SubtitleStream> _subtitle_stream;
68 /** Subtitle streams that this decoder's content has */
69 std::vector<boost::shared_ptr<SubtitleStream> > _subtitle_streams;
72 void signal_video (boost::shared_ptr<Image>, boost::shared_ptr<Subtitle>);
74 SourceFrame _video_frame;
76 boost::shared_ptr<TimedSubtitle> _timed_subtitle;
78 boost::shared_ptr<Image> _last_image;
79 boost::shared_ptr<Subtitle> _last_subtitle;