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re pipeline loop, to eliminate extra chroma reads

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Originally committed as revision 23602 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Marc Hoffman 2007-06-22 00:12:44 +00:00
parent 45eeae39ac
commit e9d4375f1a
1 changed files with 13 additions and 17 deletions
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26
libswscale/internal_bfin.S
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@ -496,30 +496,29 @@ DEFUN(uyvytoyv12, mL3, (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8
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
* p0,p1 - luma output line pointers
* I2 - dstU
* I3 - dstV
*/
lsetup (0f, 1f) lc0 = p4;
0: lsetup (2f, 3f) lc1 = p5;
r0 = [i0++] || r2 = [i1++];
lsetup (0f, 1f) lc1 = p4; // H/2
0: r0 = [i0++] || r2 = [i1++];
r1 = [i0++] || r3 = [i1++];
2: r4 = byteop1p(r1:0, r3:2) || w[i2++] = r6.l;
r5 = byteop1p(r1:0, r3:2) (r) || w[i3++] = r6.h;
r0 = r0 >> 8(v);
r4 = byteop1p(r1:0, r3:2);
r5 = byteop1p(r1:0, r3:2) (r);
lsetup (2f, 3f) lc0 = p5; // W/4
2: r0 = r0 >> 8(v);
r1 = r1 >> 8(v);
r2 = r2 >> 8(v);
r3 = r3 >> 8(v);
r0 = bytepack(r0, r1);
r2 = bytepack(r2, r3) || [p0++] = r0;
r6 = pack(r5.l, r4.l) || [p1++] = r2;
r2 = bytepack(r2, r3) || [p0++] = r0; // yyyy
r6 = pack(r5.l, r4.l) || [p1++] = r2; // yyyy
r7 = pack(r5.h, r4.h) || r0 = [i0++] || r2 = [i1++];
3: r6 = bytepack(r6, r7) || r1 = [i0++] || r3 = [i1++];
r6 = bytepack(r6, r7) || r1 = [i0++] || r3 = [i1++];
r4 = byteop1p(r1:0, r3:2) || w[i2++] = r6.l; // uu
3: r5 = byteop1p(r1:0, r3:2) (r) || w[i3++] = r6.h; // vv
i0 += m0;
i1 += m0;
@ -528,9 +527,6 @@ DEFUN(uyvytoyv12, mL3, (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8
p0 = p0 + p2;
1: p1 = p1 + p2;
w[i2++] = r6.l;
w[i3++] = r6.h;
(r7:4,p5:4) = [sp++];
unlink;
rts;