[FFmpeg-cvslog] avfilter/video: pick sar from link

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Thu Dec  7 10:22:32 2017 +0100| [4754d70a23255bb378975258eff296d9bdebb687] | committer: Paul B Mahol

avfilter/video: pick sar from link

It should not be needed for each filter that sets sample aspect ratio
to set it explicitly also for each and every frame, instead that is
automatically done in get_buffer call.

Signed-off-by: Paul B Mahol <onemda at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4754d70a23255bb378975258eff296d9bdebb687
---

 libavfilter/video.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/libavfilter/video.c b/libavfilter/video.c
index 6f9020b9fe..7a8e587798 100644
--- a/libavfilter/video.c
+++ b/libavfilter/video.c
@@ -43,6 +43,7 @@ AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
 
 AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
 {
+    AVFrame *frame = NULL;
     int pool_width = 0;
     int pool_height = 0;
     int pool_align = 0;
@@ -86,7 +87,13 @@ AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
         }
     }
 
-    return ff_frame_pool_get(link->frame_pool);
+    frame = ff_frame_pool_get(link->frame_pool);
+    if (!frame)
+        return NULL;
+
+    frame->sample_aspect_ratio = link->sample_aspect_ratio;
+
+    return frame;
 }
 
 AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h)