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 DCPOMATIC_VIDEO_DECODER_H
21 #define DCPOMATIC_VIDEO_DECODER_H
28 class VideoDecoder : public virtual Decoder
31 VideoDecoder (boost::shared_ptr<const Film>);
33 virtual void seek (VideoContent::Frame) = 0;
34 virtual void seek_back () = 0;
36 /** Emitted when a video frame is ready.
37 * First parameter is the video image.
38 * Second parameter is true if the image is the same as the last one that was emitted.
39 * Third parameter is the frame within our source.
41 boost::signals2::signal<void (boost::shared_ptr<const Image>, bool, VideoContent::Frame)> Video;
45 void video (boost::shared_ptr<const Image>, bool, VideoContent::Frame);
46 VideoContent::Frame _video_position;