/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ 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
*/
+/** @file src/lib/video_decoder.h
+ * @brief VideoDecoder class.
+ */
+
#ifndef DCPOMATIC_VIDEO_DECODER_H
#define DCPOMATIC_VIDEO_DECODER_H
-#include <boost/signals2.hpp>
-#include <boost/shared_ptr.hpp>
#include "decoder.h"
#include "video_content.h"
#include "util.h"
+#include "content_video.h"
+#include <boost/signals2.hpp>
+#include <boost/shared_ptr.hpp>
class VideoContent;
class ImageProxy;
+class Image;
+/** @class VideoDecoder
+ * @brief Parent for classes which decode video.
+ */
class VideoDecoder : public virtual Decoder
{
public:
- VideoDecoder (boost::shared_ptr<const Film>, boost::shared_ptr<const VideoContent>);
-
- /** Seek so that the next pass() will yield (approximately) the requested frame.
- * Pass accurate = true to try harder to get close to the request.
- */
- virtual void seek (VideoContent::Frame frame, bool accurate) = 0;
-
- /** Emitted when a video frame is ready.
- * First parameter is the video image.
- * Second parameter is the eye(s) which should see this image.
- * Third parameter is the part of this image that should be used.
- * Fourth parameter is true if the image is the same as the last one that was emitted for this Eyes value.
- * Fourth parameter is the frame within our source.
- */
- boost::signals2::signal<void (boost::shared_ptr<const ImageProxy>, Eyes, Part, bool, VideoContent::Frame)> Video;
-
+ VideoDecoder (boost::shared_ptr<const VideoContent> c);
+
+ std::list<ContentVideo> get_video (Frame frame, bool accurate);
+
+ boost::shared_ptr<const VideoContent> video_content () const {
+ return _video_content;
+ }
+
+ void set_ignore_video ();
+
+#ifdef DCPOMATIC_DEBUG
+ int test_gaps;
+#endif
+
protected:
+ friend struct video_decoder_fill_test1;
+ friend struct video_decoder_fill_test2;
+
+ void seek (ContentTime time, bool accurate);
+ void video (boost::shared_ptr<const ImageProxy>, Frame frame);
+ std::list<ContentVideo> decoded_video (Frame frame);
+ void fill_one_eye (Frame from, Frame to, Eyes);
+ void fill_both_eyes (Frame from, Frame to, Eyes);
- void video (boost::shared_ptr<const ImageProxy>, bool, VideoContent::Frame);
boost::shared_ptr<const VideoContent> _video_content;
- /** This is in frames without taking 3D into account (e.g. if we are doing 3D alternate,
- * this would equal 2 on the left-eye second frame (not 1)).
- */
- VideoContent::Frame _video_position;
+ std::list<ContentVideo> _decoded_video;
+ boost::shared_ptr<Image> _black_image;
+ boost::optional<ContentTime> _last_seek_time;
+ bool _last_seek_accurate;
+
+ /** true if this decoder should ignore all video; i.e. never produce any */
+ bool _ignore_video;
};
#endif