ffmpeg: use display matrix frame side data for autorotation

And give it priority over stream side data when present.
Fixes part of ticket #6945.

Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h
index 1194bb0cae..30225e9ffe 100644
--- a/fftools/ffmpeg.h
+++ b/fftools/ffmpeg.h
@@ -258,6 +258,7 @@ typedef struct InputFilter {
     uint64_t channel_layout;
 
     AVBufferRef *hw_frames_ctx;
+    int32_t *displaymatrix;
 
     int eof;
 } InputFilter;