correct chroma skewing bug, caused by incorrect stride adjustments
Originally committed as revision 23601 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
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@ -476,24 +476,26 @@ DEFUN(uyvytoyv12, mL3, (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8
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r1 = [fp + ARG_srcStride];
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r1 = [fp + ARG_srcStride];
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r2 = r0 + r1;
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r2 = r0 + r1;
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r1 += -16;
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r1 += -8;
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m0 = r1;
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m0 = r1;
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i0 = r0; // uyvy_T even
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i0 = r0; // uyvy_T even
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i1 = r2; // uyvy_B odd
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i1 = r2; // uyvy_B odd
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r2 = [fp + ARG_chromStride];
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m1 = r2;
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p2 = [fp + ARG_lumStride];
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p2 = [fp + ARG_lumStride];
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p1 = p0 + p2; // Y bot odd
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p1 = p0 + p2; // Y bot odd
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p2 += -4;
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p5 = [fp + ARG_width];
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p5 = [fp + ARG_width];
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p4 = [fp + ARG_height];
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p4 = [fp + ARG_height];
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r0 = p5;
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p4 = p4 >> 1;
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p4 = p4 >> 1;
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p5 = p5 >> 2;
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p5 = p5 >> 2;
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r2 = [fp + ARG_chromStride];
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r0 = r0 >> 1;
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r2 = r2 - r0;
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m1 = r2;
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r6.l = w[i2--]; r6.l = w[i2];
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r6.l = w[i2--]; r6.l = w[i2];
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r6.h = w[i3--]; r6.h = w[i3];
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r6.h = w[i3--]; r6.h = w[i3];
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/* I0,I1 - src input line pointers
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/* I0,I1 - src input line pointers
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@ -521,6 +523,8 @@ DEFUN(uyvytoyv12, mL3, (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8
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i0 += m0;
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i0 += m0;
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i1 += m0;
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i1 += m0;
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i2 += m1;
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i3 += m1;
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p0 = p0 + p2;
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p0 = p0 + p2;
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1: p1 = p1 + p2;
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1: p1 = p1 + p2;
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