Another try at sorting out the thorny question of timing.

[dcpomatic.git] / src / lib / video_decoder.h

diff --git a/src/lib/video_decoder.h b/src/lib/video_decoder.h
index a2fd5b6510a1fb297c555cf49ce749772e998d21..d24219d956cba2df1b92b8a58e2d3f5bc8d24d78 100644 (file)
--- a/src/lib/video_decoder.h
+++ b/src/lib/video_decoder.h
@@ -17,59 +17,33 @@
 
 */
 
-#ifndef DVDOMATIC_VIDEO_DECODER_H
-#define DVDOMATIC_VIDEO_DECODER_H
+#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 VideoSource, public virtual Decoder
+class VideoDecoder : public virtual Decoder
 {
 public:
        VideoDecoder (boost::shared_ptr<const Film>);
 
-       /** @return video frames per second, or 0 if unknown */
-       virtual float frames_per_second () 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 void seek (VideoContent::Frame) = 0;
+       virtual void seek_back () = 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;
+       /** 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_source_time () const {
-               return _last_source_time;
-       }
-
 protected:
-       
-       virtual PixelFormat pixel_format () const = 0;
-
-       void emit_video (boost::shared_ptr<Image>, double);
-       void emit_subtitle (boost::shared_ptr<TimedSubtitle>);
-       void repeat_last_video ();
-
-private:
-       void signal_video (boost::shared_ptr<Image>, bool, boost::shared_ptr<Subtitle>);
-
-       int _video_frame;
-       double _last_source_time;
-       
-       boost::shared_ptr<TimedSubtitle> _timed_subtitle;
 
-       boost::shared_ptr<Image> _last_image;
-       boost::shared_ptr<Subtitle> _last_subtitle;
+       void video (boost::shared_ptr<const Image>, bool, VideoContent::Frame);
+       VideoContent::Frame _video_position;
 };
 
 #endif