From bf4a90fcc301e0d4a1ac56d24a35bb776155ef64 Mon Sep 17 00:00:00 2001 From: Marc Hoffman Date: Sat, 19 May 2007 12:57:17 +0000 Subject: [PATCH] Blackfin optimized uyvytoyv12 routine. the implementation includes chroma averaging. This is 10x faster than the cooresponding C function. Originally committed as revision 23345 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale --- libswscale/internal_bfin.S | 79 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) diff --git a/libswscale/internal_bfin.S b/libswscale/internal_bfin.S index d61b07e9cb..c5f4e9ef52 100644 --- a/libswscale/internal_bfin.S +++ b/libswscale/internal_bfin.S @@ -452,3 +452,82 @@ DEFUN(yuv2rgb24_line,MEM, unlink; rts; DEFUN_END(yuv2rgb888_line) + + + +#define ARG_vdst 20 +#define ARG_width 24 +#define ARG_height 28 +#define ARG_lumStride 32 +#define ARG_chromStride 36 +#define ARG_srcStride 40 + +DEFUN(uyvytoyv12, mL3, (const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst, + long width, long height, + long lumStride, long chromStride, long srcStride)): + link 0; + [--sp] = (r7:4,p5:4); + + p0 = r1; // Y top even + + i2 = r2; // *u + r2 = [fp + ARG_vdst]; + i3 = r2; // *v + + r1 = [fp + ARG_srcStride]; + r2 = r0 + r1; + r1 += -16; + 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]; + p4 = p4 >> 1; + p5 = p5 >> 2; + + 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++]; + 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); + 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; + r7 = pack(r5.h, r4.h) || r0 = [i0++] || r2 = [i1++]; +3: r6 = bytepack(r6, r7) || r1 = [i0++] || r3 = [i1++]; + + i0 += m0; + i1 += m0; + p0 = p0 + p2; +1: p1 = p1 + p2; + + w[i2++] = r6.l; + w[i3++] = r6.h; + + (r7:4,p5:4) = [sp++]; + unlink; + rts; +DEFUN_END(uyvytoyv12)