Signed-off-by: Nicolas George <geo...@nsup.org>
---
libavfilter/avfilter.c | 13 +++++++++++++
libavfilter/internal.h | 6 ++++++
2 files changed, 19 insertions(+)
diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 0020ee163a..c1858fb6a0 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -1543,6 +1543,19 @@ int ff_filter_activate(AVFilterContext *filter)
return ret;
}
+int ff_link_acknowledge_status(AVFilterLink *link)
+{
+ if (ff_framequeue_queued_frames(&link->fifo))
+ return 0;
+ if (link->status_out)
+ return link->status_out;
+ if (!link->status_in)
+ return 0;
+ link->status_out = link->status_in;
+ ff_update_link_current_pts(link, link->status_in_pts);
+ return 1;
+}
+
const AVClass *avfilter_get_class(void)
{
return &avfilter_class;
diff --git a/libavfilter/internal.h b/libavfilter/internal.h
index 599be24a85..13666bc330 100644
--- a/libavfilter/internal.h
+++ b/libavfilter/internal.h
@@ -613,4 +613,10 @@ static inline int ff_norm_qscale(int qscale, int type)
*/
int ff_filter_get_nb_threads(AVFilterContext *ctx);
+/**
+ * Test and acknowledge the change of status on the link.
+ * @return >0 if status changed, 0 otherwise, <0 if status already acked
+ */
+int ff_link_acknowledge_status(AVFilterLink *link);
+
#endif /* AVFILTER_INTERNAL_H */
--
2.11.0
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