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authorAndreas Rheinhardt <andreas.rheinhardt@outlook.com>2024-04-04 02:28:00 +0200
committerAndreas Rheinhardt <andreas.rheinhardt@outlook.com>2024-04-04 23:57:19 +0200
commite54696bcaa0819674e2f9bc7c9a4c87383675091 (patch)
tree1e90218f55612a17ed41dab9b1c69fbb704531f2
parent7c338f470f869978efa3ec161c5f28fa83840c00 (diff)
avcodec/ppc/h264dsp: Fix left shifts of negative numbers
PPC equivalent of c756b3fca240df75ffa28e75f2eb34834c10294d. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
-rw-r--r--libavcodec/ppc/h264dsp.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/ppc/h264dsp.c b/libavcodec/ppc/h264dsp.c
index f50f2553a2..0650768d7b 100644
--- a/libavcodec/ppc/h264dsp.c
+++ b/libavcodec/ppc/h264dsp.c
@@ -663,7 +663,7 @@ void weight_h264_W_altivec(uint8_t *block, int stride, int height,
DECLARE_ALIGNED(16, int32_t, temp)[4];
LOAD_ZERO;
- offset <<= log2_denom;
+ offset *= 1 << log2_denom;
if(log2_denom) offset += 1<<(log2_denom-1);
temp[0] = log2_denom;
temp[1] = weight;
@@ -712,7 +712,7 @@ void biweight_h264_W_altivec(uint8_t *dst, uint8_t *src, int stride, int height,
DECLARE_ALIGNED(16, int32_t, temp)[4];
LOAD_ZERO;
- offset = ((offset + 1) | 1) << log2_denom;
+ offset = ((offset + 1) | 1) * (1 << log2_denom);
temp[0] = log2_denom+1;
temp[1] = weights;
temp[2] = weightd;