return srcSliceH;
static int altivec_uyvy_rgb32 (SwsContext *c,			       unsigned char **in, int *instrides,			       int srcSliceY,	int srcSliceH,			       unsigned char **oplanes, int *outstrides){  int w = c->srcW;  int h = srcSliceH;  int i,j;  vector unsigned char uyvy;  vector signed   short Y,U,V;  vector signed   short vx,ux,uvx;  vector signed   short R0,G0,B0,R1,G1,B1;  vector unsigned char  R,G,B;  vector unsigned char *out;  ubyte *img;  img = in[0];  out = (vector unsigned char *)(oplanes[0]+srcSliceY*outstrides[0]);  for (i=0;i<h;i++) {    for (j=0;j<w/16;j++) {      uyvy = vec_ld (0, img);      U = (vector signed short)	vec_perm (uyvy, (vector unsigned char)(0), demux_u);      V = (vector signed short)	vec_perm (uyvy, (vector unsigned char)(0), demux_v);      Y = (vector signed short)	vec_perm (uyvy, (vector unsigned char)(0), demux_y);      cvtyuvtoRGB (c, Y,U,V,&R0,&G0,&B0);      uyvy = vec_ld (16, img);      U = (vector signed short)	vec_perm (uyvy, (vector unsigned char)(0), demux_u);      V = (vector signed short)	vec_perm (uyvy, (vector unsigned char)(0), demux_v);      Y = (vector signed short)	vec_perm (uyvy, (vector unsigned char)(0), demux_y);      cvtyuvtoRGB (c, Y,U,V,&R1,&G1,&B1);      R  = vec_packclp (R0,R1);      G  = vec_packclp (G0,G1);      B  = vec_packclp (B0,B1);      //      vec_mstbgr24 (R,G,B, out);      out_rgba (R,G,B,out);      img += 32;    }  }}