#ifndef DCPOMATIC_VIDEO_DECODER_H
#define DCPOMATIC_VIDEO_DECODER_H
-#include "video_source.h"
+#include <boost/signals2.hpp>
+#include <boost/shared_ptr.hpp>
#include "decoder.h"
+#include "video_content.h"
#include "util.h"
class VideoContent;
+class ImageProxy;
-class VideoDecoder : public VideoSource, public virtual Decoder
+class VideoDecoder : public virtual Decoder
{
public:
VideoDecoder (boost::shared_ptr<const Film>, boost::shared_ptr<const VideoContent>);
- /* Calls for VideoContent to find out about itself */
-
- /** @return video frame rate second, or 0 if unknown */
- virtual float video_frame_rate () const = 0;
- /** @return video size in pixels */
- virtual libdcp::Size video_size () const = 0;
- /** @return length according to our content's header */
- virtual ContentVideoFrame video_length () const = 0;
-
-protected:
+ /** 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;
- void video (boost::shared_ptr<Image>, bool, Time);
- void subtitle (boost::shared_ptr<TimedSubtitle>);
- bool video_done () const;
+protected:
- Time _next_video;
+ void video (boost::shared_ptr<const ImageProxy>, bool, VideoContent::Frame);
boost::shared_ptr<const VideoContent> _video_content;
-
-private:
- boost::shared_ptr<TimedSubtitle> _timed_subtitle;
- FrameRateConversion _frame_rate_conversion;
- bool _odd;
+ /** 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;
};
#endif