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avcodec/vp8: Fix undefined shifts in vp8_mc_luma()

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Found-by: Clang -fsanitize=shift
Reported-by: Thierry Foucu <tfoucu@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2015-03-11 16:55:07 +01:00
parent 8617bc6ffa
commit 9b2a964cee
1 changed files with 2 additions and 2 deletions
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4
libavcodec/vp8.c
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@@ -1721,8 +1721,8 @@ void vp8_mc_luma(VP8Context *s, VP8ThreadData *td, uint8_t *dst,
if (AV_RN32A(mv)) { if (AV_RN32A(mv)) {
int src_linesize = linesize; int src_linesize = linesize;
int mx = (mv->x << 1) & 7, mx_idx = subpel_idx[0][mx]; int mx = (mv->x * 2) & 7, mx_idx = subpel_idx[0][mx];
int my = (mv->y << 1) & 7, my_idx = subpel_idx[0][my]; int my = (mv->y * 2) & 7, my_idx = subpel_idx[0][my];
x_off += mv->x >> 2; x_off += mv->x >> 2;
y_off += mv->y >> 2; y_off += mv->y >> 2;