[FFmpeg-devel] [PATCH 1/2] avcodec/ac3dec: don't export Matrix Encoding side data when no such info is coded

[James Almer]

No point inserting the side data to all frames just to say there's no
coded matrix encoding.

Signed-off-by: James Almer <jamrial at gmail.com>
---
 libavcodec/ac3dec.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c
index 0b120e6140..7a84f3c85d 100644
--- a/libavcodec/ac3dec.c
+++ b/libavcodec/ac3dec.c
@@ -1819,7 +1819,8 @@ skip:
             break;
         }
     }
-    if ((ret = ff_side_data_update_matrix_encoding(frame, matrix_encoding)) < 0)
+    if (matrix_encoding != AV_MATRIX_ENCODING_NONE &&
+        (ret = ff_side_data_update_matrix_encoding(frame, matrix_encoding)) < 0)
         return ret;
 
     /* AVDownmixInfo */
-- 
2.39.0