#include "video_sink.h"
using boost::shared_ptr;
+using boost::weak_ptr;
using boost::bind;
-void
-VideoSource::connect_video (shared_ptr<VideoSink> s)
+static void
+process_video_proxy (weak_ptr<VideoSink> sink, shared_ptr<const Image> image, bool same, Time time)
{
- Video.connect (bind (&VideoSink::process_video, s, _1, _2, _3));
+ shared_ptr<VideoSink> p = sink.lock ();
+ if (p) {
+ p->process_video (image, same, time);
+ }
}
void
-TimedVideoSource::connect_video (shared_ptr<TimedVideoSink> s)
+VideoSource::connect_video (shared_ptr<VideoSink> s)
{
- Video.connect (bind (&TimedVideoSink::process_video, s, _1, _2, _3, _4));
+ /* If we bind, say, a Player (as the VideoSink) to a Decoder (which is owned
+ by the Player) we create a cycle. Use a weak_ptr to break it.
+ */
+ Video.connect (bind (process_video_proxy, weak_ptr<VideoSink> (s), _1, _2, _3));
}
+