Due to the union construct, unused bits in bitplane_present.value might
be uninitialized even when the used bits are all set to a value.
Masking the unused bits prevents spurious true values when all used
bits are unset, e.g. skipped pictures.
Signed-off-by: Jerome Borsboom <jerome.borsb...@carpalis.nl>
---
libavcodec/vaapi_vc1.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/vaapi_vc1.c b/libavcodec/vaapi_vc1.c
index a137979dd4..e93b7285e3 100644
--- a/libavcodec/vaapi_vc1.c
+++ b/libavcodec/vaapi_vc1.c
@@ -387,7 +387,7 @@ static int vaapi_vc1_start_frame(AVCodecContext
*avctx, av_unused const uint8_t
if (err)
goto fail;
- if (pic_param.bitplane_present.value) {
+ if (pic_param.bitplane_present.value & 0x7f) {
uint8_t *bitplane;
const uint8_t *ff_bp[3];
int x, y, n;
--
2.13.6
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