[FFmpeg-cvslog] avcodec/cuviddec: set ulMaxDisplayDelay to zero if low_delay flag is set

[Michal Novotny]

ffmpeg | branch: master | Michal Novotny <michal.novotny at comprimato.com> | Fri Feb 19 14:33:25 2021 -0800| [b5d95998ffecafb20811604d36224f8b9dfdeefc] | committer: Timo Rothenpieler

avcodec/cuviddec: set ulMaxDisplayDelay to zero if low_delay flag is set

Zero is the recommended value in Nvidia coding samples for low latency use-cases.

Signed-off-by: Michal Novotny <michal.novotny at comprimato.com>
Signed-off-by: Timo Rothenpieler <timo at rothenpieler.org>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b5d95998ffecafb20811604d36224f8b9dfdeefc
---

 libavcodec/cuviddec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/cuviddec.c b/libavcodec/cuviddec.c
index 49775b5a09..ec57afdefe 100644
--- a/libavcodec/cuviddec.c
+++ b/libavcodec/cuviddec.c
@@ -999,7 +999,7 @@ static av_cold int cuvid_decode_init(AVCodecContext *avctx)
     }
 
     ctx->cuparseinfo.ulMaxNumDecodeSurfaces = ctx->nb_surfaces;
-    ctx->cuparseinfo.ulMaxDisplayDelay = 4;
+    ctx->cuparseinfo.ulMaxDisplayDelay = (avctx->flags & AV_CODEC_FLAG_LOW_DELAY) ? 0 : 4;
     ctx->cuparseinfo.pUserData = avctx;
     ctx->cuparseinfo.pfnSequenceCallback = cuvid_handle_video_sequence;
     ctx->cuparseinfo.pfnDecodePicture = cuvid_handle_picture_decode;