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correct chroma skewing bug, caused by incorrect stride adjustments 

Originally committed as revision 23601 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Marc Hoffman 2007-06-22 00:07:55 +00:00
parent 43399718fb
commit 45eeae39ac
1 changed files with 9 additions and 5 deletions
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14
libswscale/internal_bfin.S
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@ -476,24 +476,26 @@ DEFUN(uyvytoyv12, mL3, (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8
r1 = [fp + ARG_srcStride];
r2 = r0 + r1;
r1 += -16;
r1 += -8;
m0 = r1;
i0 = r0; // uyvy_T even
i1 = r2; // uyvy_B odd
r2 = [fp + ARG_chromStride];
m1 = r2;
p2 = [fp + ARG_lumStride];
p1 = p0 + p2; // Y bot odd
p2 += -4;
p5 = [fp + ARG_width];
p4 = [fp + ARG_height];
r0 = p5;
p4 = p4 >> 1;
p5 = p5 >> 2;
r2 = [fp + ARG_chromStride];
r0 = r0 >> 1;
r2 = r2 - r0;
m1 = r2;
r6.l = w[i2--]; r6.l = w[i2];
r6.h = w[i3--]; r6.h = w[i3];
/* I0,I1 - src input line pointers
@ -521,6 +523,8 @@ DEFUN(uyvytoyv12, mL3, (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8
i0 += m0;
i1 += m0;
i2 += m1;
i3 += m1;
p0 = p0 + p2;
1: p1 = p1 + p2;