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-rw-r--r--libavfilter/filters.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/libavfilter/filters.h b/libavfilter/filters.h
index 72e5676369..3036ba27a6 100644
--- a/libavfilter/filters.h
+++ b/libavfilter/filters.h
@@ -40,6 +40,13 @@
void ff_filter_set_ready(AVFilterContext *filter, unsigned priority);
/**
+ * Make sure a frame is writable.
+ * This is similar to av_frame_make_writable() except it uses the link's
+ * buffer allocation callback, and therefore allows direct rendering.
+ */
+int ff_inlink_make_frame_writable(AVFilterLink *link, AVFrame **rframe);
+
+/**
* Test and acknowledge the change of status on the link.
*
* Status means EOF or an error condition; a change from the normal (0)