- VideoDecoder (boost::shared_ptr<const Film>);
-
- /** @return video frame rate second, or 0 if unknown */
- virtual float video_frame_rate () const = 0;
- /** @return native size in pixels */
- virtual libdcp::Size native_size () const = 0;
- /** @return length according to our content's header */
- virtual ContentVideoFrame video_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;
-
- void set_progress (Job *) const;
+ 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;