X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavfilter%2Favfiltergraph.h;h=05181245823da3e5be24ea8e9ec8b436d1697b1d;hb=39a8275fdf4f607023b483a58b255600d5f7a9e7;hp=7e475661291ce98ad45487b41cccb3007ff0e107;hpb=7e22514d98ecd56cc4e55dac7c813551e2152b80;p=ffmpeg

diff --git a/libavfilter/avfiltergraph.h b/libavfilter/avfiltergraph.h
index 7e475661291..05181245823 100644
--- a/libavfilter/avfiltergraph.h
+++ b/libavfilter/avfiltergraph.h
@@ -26,9 +26,7 @@
 #include "libavutil/log.h"
 
 typedef struct AVFilterGraph {
-#if FF_API_GRAPH_AVCLASS
     const AVClass *av_class;
-#endif
     unsigned filter_count;
     AVFilterContext **filters;
 
@@ -257,8 +255,14 @@ char *avfilter_graph_dump(AVFilterGraph *graph, const char *options);
  * of a filtergraph, only a convenience function to help drain a filtergraph
  * in a balanced way under normal circumstances.
  *
- * @return  the return value of avfilter_request_frame,
- *          or AVERROR_EOF of all links returned AVERROR_EOF.
+ * Also note that AVERROR_EOF does not mean that frames did not arrive on
+ * some of the sinks during the process.
+ * When there are multiple sink links, in case the requested link
+ * returns an EOF, this may cause a filter to flush pending frames
+ * which are sent to another sink link, although unrequested.
+ *
+ * @return  the return value of ff_request_frame(),
+ *          or AVERROR_EOF if all links returned AVERROR_EOF
  */
 int avfilter_graph_request_oldest(AVFilterGraph *graph);