#define AV_PAD_VIDEO 0
/**
+ * Callback to get a list of supported formats. The returned list should
+ * be terminated by -1. This is used for both input and output pads and
+ * is required for both.
+ */
+ int *(*query_formats)(AVFilterLink *link);
+
+ /**
* Callback called before passing the first slice of a new frame. If
* NULL, the filter layer will default to storing a reference to the
* picture inside the link structure.
void (*request_frame)(AVFilterLink *link);
/**
- * Callback to set properties of the link. Only for video output pads.
- * XXX: this is not acceptable as is. it needs reworked to allow for
- * negotiation of colorspace, etc.
+ * Link configuration callback. For output pads, this should set the link
+ * properties such as width/height. NOTE: this should not set the format
+ * property - that is negotiated between filters by the filter system using
+ * the query_formats() callback.
+ *
+ * For input pads, this should check the properties of the link, and update
+ * the filter's internal state as necessary.
*/
- int (*set_video_props)(AVFilterLink *link);
+ int (*config_props)(AVFilterLink *link);
};
/* the default implementations of start_frame() and end_frame() */
int avfilter_init_filter(AVFilterContext *filter, const char *args);
void avfilter_destroy(AVFilterContext *filter);
+int *avfilter_make_format_list(int len, ...);
+
#endif /* FFMPEG_AVFILTER_H */