From e2646e23be69bdef1e41d4decee1a4298701b8d1 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Sat, 28 Sep 2019 04:26:02 +0200 Subject: [PATCH] swscale/utils: Fix invalid left shifts of negative numbers Affected the FATE-tests vsynth_lena-dv-411, vsynth1-dv-411, vsynth2-dv-411 and hevc-paramchange-yuv420p.yuv420p10. Signed-off-by: Andreas Rheinhardt Signed-off-by: Michael Niedermayer --- libswscale/utils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libswscale/utils.c b/libswscale/utils.c index 1b1f779532..57c4fd2b0f 100644 --- a/libswscale/utils.c +++ b/libswscale/utils.c @@ -390,7 +390,7 @@ static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos, (*filterPos)[i] = xx; // bilinear upscale / linear interpolate / area averaging for (j = 0; j < filterSize; j++) { - int64_t coeff= fone - FFABS(((int64_t)xx<<16) - xDstInSrc)*(fone>>16); + int64_t coeff = fone - FFABS((int64_t)xx * (1 << 16) - xDstInSrc) * (fone >> 16); if (coeff < 0) coeff = 0; filter[i * filterSize + j] = coeff;