A lot of filters require aligned frame data, but do not document it.
It can result in crashes with perfectly valid uses of the API.
Signed-off-by: Nicolas George <geo...@nsup.org>
---
libavfilter/avfilter.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index 60662c19ac..db9c02b8c0 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -569,6 +569,15 @@ struct AVFilterLink {
*/
AVBufferRef *hw_frames_ctx;
+ /**
+ * Minimum alignment of frame data required by the destination filter.
+ * All frame data pointers must have the alignment lower bits cleared,
+ * i.e. be a multiple of 1<<alignment.
+ * Frames with insufficient alignment will be realigned by the
+ * framework.
+ */
+ unsigned alignment;
+
#ifndef FF_INTERNAL_FIELDS
/**
--
2.11.0
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