From 0e3a46720af828726c8565d657b34b094759d444 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Thu, 4 Apr 2024 02:28:00 +0200 Subject: [PATCH] avcodec/ppc/h264dsp: Fix left shifts of negative numbers PPC equivalent of c756b3fca240df75ffa28e75f2eb34834c10294d. Signed-off-by: Andreas Rheinhardt (cherry picked from commit e54696bcaa0819674e2f9bc7c9a4c87383675091) --- libavcodec/ppc/h264dsp.c | 4 ++-- 1 file 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;