*/
int ff_inlink_evaluate_timeline_at_frame(AVFilterLink *link, const AVFrame *frame);
+/**
+ * Get the number of frames available on the link.
+ * @return the number of frames available in the link fifo.
+ */
+size_t ff_inlink_queued_frames(AVFilterLink *link);
+
/**
* Test if a frame is available on the link.
* @return >0 if a frame is available
*/
int ff_inlink_check_available_frame(AVFilterLink *link);
+
+/***
+ * Get the number of samples available on the link.
+ * @return the numer of samples available on the link.
+ */
+int ff_inlink_queued_samples(AVFilterLink *link);
+
/**
* Test if enough samples are available on the link.
* @return >0 if enough samples are available
int ff_inlink_consume_samples(AVFilterLink *link, unsigned min, unsigned max,
AVFrame **rframe);
+/**
+ * Access a frame in the link fifo without consuming it.
+ * The first frame is numbered 0; the designated frame must exist.
+ * @return the frame at idx position in the link fifo.
+ */
+AVFrame *ff_inlink_peek_frame(AVFilterLink *link, size_t idx);
+
/**
* Make sure a frame is writable.
* This is similar to av_frame_make_writable() except it uses the link's