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sws/fill_rgb2yuv_table: avoid 2 divisions

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer 2013-04-16 11:13:20 +02:00
parent 97b2865aa2
commit 2fa11a94a3
1 changed files with 2 additions and 2 deletions
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4
libswscale/utils.c
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@ -868,9 +868,9 @@ static void fill_rgb2yuv_table(SwsContext *c, const int table[4], int dstRange)
c->input_rgb2yuv_table[RU_IDX] = (1 << RGB2YUV_SHIFT)*ONE*V/(Z*ub);
c->input_rgb2yuv_table[GU_IDX] = -(1 << RGB2YUV_SHIFT)*ONE*ONE/(Z*ub);
c->input_rgb2yuv_table[BU_IDX] = (1 << RGB2YUV_SHIFT)*(ONE + ONE*W/Z)/ub;
c->input_rgb2yuv_table[BU_IDX] = (1 << RGB2YUV_SHIFT)*ONE*(Z+W)/(Z*ub);
c->input_rgb2yuv_table[RV_IDX] = (1 << RGB2YUV_SHIFT)*(ONE + ONE*V/Z)/vr;
c->input_rgb2yuv_table[RV_IDX] = (1 << RGB2YUV_SHIFT)*ONE*(V+Z)/(Z*vr);
c->input_rgb2yuv_table[GV_IDX] = -(1 << RGB2YUV_SHIFT)*ONE*ONE/(Z*vr);
c->input_rgb2yuv_table[BV_IDX] = (1 << RGB2YUV_SHIFT)*ONE*W/(Z*vr);