From 4f4ca675e59795c743ab1d0ec9b4f3ece883f650 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 26 Sep 2019 17:10:49 +0200 Subject: [PATCH] swscale/output: Implement Luma computation from yuv2ya16_X_c_template() without 64bit This also reverts 21838cad2fc44023ad85e35d5c677e2f8d29a0ef The revert is in this commit to avoid 2 fate updates Signed-off-by: Michael Niedermayer --- libswscale/output.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libswscale/output.c b/libswscale/output.c index 0e20a0a6b8..60a9bdfe82 100644 --- a/libswscale/output.c +++ b/libswscale/output.c @@ -904,13 +904,14 @@ yuv2ya16_X_c_template(SwsContext *c, const int16_t *lumFilter, for (i = 0; i < dstW; i++) { int j; - int64_t Y = 1 << 18; + int Y = -0x40000000; int64_t A = 0xffff<<14; for (j = 0; j < lumFilterSize; j++) Y += lumSrc[j][i] * lumFilter[j]; Y >>= 15; + Y += (1<<3) + 0x8000; Y = av_clip_uint16(Y); if (hasAlpha) {