[FFmpeg-devel] [PATCH] dxva2_hevc: don't use frames as reference if they are not marked as such

From: Steve Lhomme <robux4@ycbcr.xyz>
To: ffmpeg-devel@ffmpeg.org
Subject: [FFmpeg-devel] [PATCH] dxva2_hevc: don't use frames as reference if they are not marked as such
Date: Wed, 23 Mar 2022 14:54:26 +0100
Message-ID: <20220323135426.32530-1-robux4@ycbcr.xyz> (raw)

Similar to how a frame is considered for referencing for the RefPicList array.
This will do the same for RefPicSetStCurrBefore, RefPicSetStCurrAfter and
RefPicSetLtCurr.

Fixes playback of http://www.gbbsoft.pl/!download/!/Film1.mp4
Ref. VLC issue https://code.videolan.org/videolan/vlc/-/issues/26738

Signed-off-by: Steve Lhomme <robux4@ycbcr.xyz>
---
 libavcodec/dxva2_hevc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/dxva2_hevc.c b/libavcodec/dxva2_hevc.c
index c91bcf3eeb..6b239d9917 100644
--- a/libavcodec/dxva2_hevc.c
+++ b/libavcodec/dxva2_hevc.c
@@ -184,7 +184,7 @@ static void fill_picture_parameters(const AVCodecContext *avctx, AVDXVAContext *
             const HEVCFrame *frame = NULL; \
             while (!frame && j < rpl->nb_refs) \
                 frame = rpl->ref[j++]; \
-            if (frame) \
+            if (frame && frame->flags & (HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF)) \
                 pp->ref_list[i] = get_refpic_index(pp, ff_dxva2_get_surface_index(avctx, ctx, frame->frame)); \
             else \
                 pp->ref_list[i] = 0xff; \
-- 
2.29.2

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