#ifndef DCPOMATIC_VIDEO_DECODER_H
#define DCPOMATIC_VIDEO_DECODER_H
-#include "video_source.h"
#include "decoder.h"
+#include "util.h"
class VideoContent;
-class VideoDecoder : public TimedVideoSource, public virtual Decoder
+class VideoDecoder : public virtual Decoder
{
public:
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;
+ /** 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 true if the image is the same as the last one that was emitted.
+ * Third parameter is the frame within our source.
+ */
+ boost::signals2::signal<void (boost::shared_ptr<const Image>, bool, VideoContent::Frame)> Video;
- int video_frame () const {
- return _video_frame;
- }
-
- double last_content_time () const {
- return _last_content_time;
- }
-
protected:
-
- virtual PixelFormat pixel_format () const = 0;
-
- void emit_video (boost::shared_ptr<Image>, bool, double);
- void emit_subtitle (boost::shared_ptr<TimedSubtitle>);
-private:
- int _video_frame;
- double _last_content_time;
-
- boost::shared_ptr<TimedSubtitle> _timed_subtitle;
+ void video (boost::shared_ptr<const Image>, bool, VideoContent::Frame);
+ VideoContent::Frame _video_position;
};
#endif