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>, DecodeOptions, 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 libdcp::Size native_size () const = 0;
36 /** @return length (in source video frames), according to our content's header */
37 virtual SourceFrame length () const = 0;
39 virtual int time_base_numerator () const = 0;
40 virtual int time_base_denominator () const = 0;
41 virtual int sample_aspect_ratio_numerator () const = 0;
42 virtual int sample_aspect_ratio_denominator () const = 0;
44 virtual void set_subtitle_stream (boost::shared_ptr<SubtitleStream>);
46 void set_progress () const;
48 int video_frame () const {
52 boost::shared_ptr<SubtitleStream> subtitle_stream () const {
53 return _subtitle_stream;
56 std::vector<boost::shared_ptr<SubtitleStream> > subtitle_streams () const {
57 return _subtitle_streams;
60 double last_source_time () const {
61 return _last_source_time;
66 virtual PixelFormat pixel_format () const = 0;
68 void emit_video (boost::shared_ptr<Image>, double);
69 void emit_subtitle (boost::shared_ptr<TimedSubtitle>);
70 void repeat_last_video ();
72 /** Subtitle stream to use when decoding */
73 boost::shared_ptr<SubtitleStream> _subtitle_stream;
74 /** Subtitle streams that this decoder's content has */
75 std::vector<boost::shared_ptr<SubtitleStream> > _subtitle_streams;
78 void signal_video (boost::shared_ptr<Image>, bool, boost::shared_ptr<Subtitle>);
81 double _last_source_time;
83 boost::shared_ptr<TimedSubtitle> _timed_subtitle;
85 boost::shared_ptr<Image> _last_image;
86 boost::shared_ptr<Subtitle> _last_subtitle;