X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libswscale%2Fyuv2rgb.c;h=62abb7df8f48e988a756f83b03177bd8d6bcca70;hb=b3dc51dd571f0852d47e67c4c02fc7eb73720059;hp=3671fe342fcf14da2f828249ab7cf055ec759e99;hpb=470bfab470893d45328f4e6e25d60b89c9af1abe;p=ffmpeg

diff --git a/libswscale/yuv2rgb.c b/libswscale/yuv2rgb.c
index 3671fe342fc..62abb7df8f4 100644
--- a/libswscale/yuv2rgb.c
+++ b/libswscale/yuv2rgb.c
@@ -817,25 +817,25 @@ av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
 
     c->uOffset = 0x0400040004000400LL;
     c->vOffset = 0x0400040004000400LL;
-    c->yCoeff  = roundToInt16(cy  * 8192) * 0x0001000100010001ULL;
-    c->vrCoeff = roundToInt16(crv * 8192) * 0x0001000100010001ULL;
-    c->ubCoeff = roundToInt16(cbu * 8192) * 0x0001000100010001ULL;
-    c->vgCoeff = roundToInt16(cgv * 8192) * 0x0001000100010001ULL;
-    c->ugCoeff = roundToInt16(cgu * 8192) * 0x0001000100010001ULL;
-    c->yOffset = roundToInt16(oy  *    8) * 0x0001000100010001ULL;
-
-    c->yuv2rgb_y_coeff   = (int16_t)roundToInt16(cy  << 13);
-    c->yuv2rgb_y_offset  = (int16_t)roundToInt16(oy  <<  9);
-    c->yuv2rgb_v2r_coeff = (int16_t)roundToInt16(crv << 13);
-    c->yuv2rgb_v2g_coeff = (int16_t)roundToInt16(cgv << 13);
-    c->yuv2rgb_u2g_coeff = (int16_t)roundToInt16(cgu << 13);
-    c->yuv2rgb_u2b_coeff = (int16_t)roundToInt16(cbu << 13);
+    c->yCoeff  = roundToInt16(cy  * (1 << 13)) * 0x0001000100010001ULL;
+    c->vrCoeff = roundToInt16(crv * (1 << 13)) * 0x0001000100010001ULL;
+    c->ubCoeff = roundToInt16(cbu * (1 << 13)) * 0x0001000100010001ULL;
+    c->vgCoeff = roundToInt16(cgv * (1 << 13)) * 0x0001000100010001ULL;
+    c->ugCoeff = roundToInt16(cgu * (1 << 13)) * 0x0001000100010001ULL;
+    c->yOffset = roundToInt16(oy  * (1 <<  3)) * 0x0001000100010001ULL;
+
+    c->yuv2rgb_y_coeff   = (int16_t)roundToInt16(cy  * (1 << 13));
+    c->yuv2rgb_y_offset  = (int16_t)roundToInt16(oy  * (1 <<  9));
+    c->yuv2rgb_v2r_coeff = (int16_t)roundToInt16(crv * (1 << 13));
+    c->yuv2rgb_v2g_coeff = (int16_t)roundToInt16(cgv * (1 << 13));
+    c->yuv2rgb_u2g_coeff = (int16_t)roundToInt16(cgu * (1 << 13));
+    c->yuv2rgb_u2b_coeff = (int16_t)roundToInt16(cbu * (1 << 13));
 
     //scale coefficients by cy
-    crv = ((crv << 16) + 0x8000) / FFMAX(cy, 1);
-    cbu = ((cbu << 16) + 0x8000) / FFMAX(cy, 1);
-    cgu = ((cgu << 16) + 0x8000) / FFMAX(cy, 1);
-    cgv = ((cgv << 16) + 0x8000) / FFMAX(cy, 1);
+    crv = ((crv * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
+    cbu = ((cbu * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
+    cgu = ((cgu * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
+    cgv = ((cgv * (1 << 16)) + 0x8000) / FFMAX(cy, 1);
 
     av_freep(&c->yuvTable);