On 8/13/2021 12:27 PM, Andreas Rheinhardt wrote:
James Almer:
Signed-off-by: James Almer <jamr...@gmail.com>
---
Not going to bother with implementing replace for side data, since it's IMO not
worth it, but patches are welcome of course.
Missing version bump and APIchanges entry.
libavutil/frame.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++
libavutil/frame.h | 18 +++++++++
2 files changed, 116 insertions(+)
diff --git a/libavutil/frame.h b/libavutil/frame.h
index ff2540a20f..36ed128886 100644
--- a/libavutil/frame.h
+++ b/libavutil/frame.h
@@ -695,6 +695,24 @@ void av_frame_free(AVFrame **frame);
*/
int av_frame_ref(AVFrame *dst, const AVFrame *src);
+/**
+ * Ensure the destination frame refers to the same data described by the source
+ * frame.
+ *
+ * Copy frame properties from src to dst and create a new reference for each
+ * AVBufferRef from src if they differ from those in dst.
+ *
+ * src must be reference counted.
+ *
+ * @param src The source frame. If there's data described in it, it must be
+ * reference counted.
+ * @param dst The destination frame.
+ *
+ * @return 0 on success, a negative AVERROR on error. On error, dst is
+ * unreferenced.
+ */
+int av_frame_replace(AVFrame *dst, const AVFrame *src);
+
/**
* Create a new frame that references the same data as src.
*
av_buffer_replace() is a no-op if src == dst (and documented to be so);
this is not true for this function where you instantly wipe side data.
Like i said above, I'm not going to try and implement replace for side
data. It's just not worth the extra complexity.
- Andreas
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