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sws/yuv2rgb: clarify precision of coeff and offset for mmx code

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It makes easier looking at the difference with the generic code just
below.
pull/181/head
Clément Bœsch 9 years ago
parent f9987464cf
commit 1e7a37f0a0
1 changed files with 6 additions and 6 deletions
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  1. 12
      libswscale/yuv2rgb.c

12
libswscale/yuv2rgb.c
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@ -817,12 +817,12 @@ av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
c->uOffset = 0x0400040004000400LL; c->uOffset = 0x0400040004000400LL;
c->vOffset = 0x0400040004000400LL; c->vOffset = 0x0400040004000400LL;
c->yCoeff = roundToInt16(cy * 8192) * 0x0001000100010001ULL; c->yCoeff = roundToInt16(cy * (1 << 13)) * 0x0001000100010001ULL;
c->vrCoeff = roundToInt16(crv * 8192) * 0x0001000100010001ULL; c->vrCoeff = roundToInt16(crv * (1 << 13)) * 0x0001000100010001ULL;
c->ubCoeff = roundToInt16(cbu * 8192) * 0x0001000100010001ULL; c->ubCoeff = roundToInt16(cbu * (1 << 13)) * 0x0001000100010001ULL;
c->vgCoeff = roundToInt16(cgv * 8192) * 0x0001000100010001ULL; c->vgCoeff = roundToInt16(cgv * (1 << 13)) * 0x0001000100010001ULL;
c->ugCoeff = roundToInt16(cgu * 8192) * 0x0001000100010001ULL; c->ugCoeff = roundToInt16(cgu * (1 << 13)) * 0x0001000100010001ULL;
c->yOffset = roundToInt16(oy * 8) * 0x0001000100010001ULL; c->yOffset = roundToInt16(oy * (1 << 3)) * 0x0001000100010001ULL;
c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy * (1 << 13)); c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy * (1 << 13));
c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy * (1 << 9)); c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy * (1 << 9));

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