[FFmpeg-devel] [PATCH] avutil/frame: add av_warn_unused_result

[Ganesh Ajjanagadde]

This is going to trigger a lot of warnings all over the place that need
fixing. Main culprits are in avfilter, when one tries to copy a frame
without checking whether src and dest formats actually are compatible.

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde at gmail.com>
---
 libavutil/frame.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavutil/frame.h b/libavutil/frame.h
index 9c6061a..5dfac64 100644
--- a/libavutil/frame.h
+++ b/libavutil/frame.h
@@ -575,6 +575,7 @@ void av_frame_free(AVFrame **frame);
  *
  * @return 0 on success, a negative AVERROR on error
  */
+av_warn_unused_result
 int av_frame_ref(AVFrame *dst, const AVFrame *src);
 
 /**
@@ -613,6 +614,7 @@ void av_frame_move_ref(AVFrame *dst, AVFrame *src);
  *
  * @return 0 on success, a negative AVERROR on error.
  */
+av_warn_unused_result
 int av_frame_get_buffer(AVFrame *frame, int align);
 
 /**
@@ -640,6 +642,7 @@ int av_frame_is_writable(AVFrame *frame);
  * @see av_frame_is_writable(), av_buffer_is_writable(),
  * av_buffer_make_writable()
  */
+av_warn_unused_result
 int av_frame_make_writable(AVFrame *frame);
 
 /**
@@ -653,6 +656,7 @@ int av_frame_make_writable(AVFrame *frame);
  *
  * @return >= 0 on success, a negative AVERROR on error.
  */
+av_warn_unused_result
 int av_frame_copy(AVFrame *dst, const AVFrame *src);
 
 /**
@@ -663,6 +667,7 @@ int av_frame_copy(AVFrame *dst, const AVFrame *src);
  * aspect ratio (for video), but not width/height or channel layout.
  * Side data is also copied.
  */
+av_warn_unused_result
 int av_frame_copy_props(AVFrame *dst, const AVFrame *src);
 
 /**
-- 
2.6.1