From d260621089763fd09f2b3e97f43d2622759dc6c5 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 26 Sep 2019 17:17:15 +0200 Subject: [PATCH] swscale/output: Avoid 64bit in Alpha in yuv2ya16_X_c_template() Signed-off-by: Michael Niedermayer --- libswscale/output.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/libswscale/output.c b/libswscale/output.c index ed8a69287c..d192ea854b 100644 --- a/libswscale/output.c +++ b/libswscale/output.c @@ -905,7 +905,7 @@ yuv2ya16_X_c_template(SwsContext *c, const int16_t *lumFilter, for (i = 0; i < dstW; i++) { int j; int Y = -0x40000000; - int64_t A = 0xffff; + int A = 0xffff; for (j = 0; j < lumFilterSize; j++) Y += lumSrc[j][i] * lumFilter[j]; @@ -915,11 +915,12 @@ yuv2ya16_X_c_template(SwsContext *c, const int16_t *lumFilter, Y = av_clip_uint16(Y); if (hasAlpha) { - A = 1<<14; + A = -0x40000000 + (1<<14); for (j = 0; j < lumFilterSize; j++) A += alpSrc[j][i] * lumFilter[j]; A >>= 15; + A += 0x8000; A = av_clip_uint16(A); }