static inline int yv12toyuy2_unscaled_altivec(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t* dstParam[], int dstStride_a[]) { uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY; // yv12toyuy2( src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0] ); uint8_t *ysrc = src[0]; uint8_t *usrc = src[1]; uint8_t *vsrc = src[2]; const int width = c->srcW; const int height = srcSliceH; const int lumStride = srcStride[0]; const int chromStride = srcStride[1]; const int dstStride = dstStride_a[0]; const vector unsigned char yperm = vec_lvsl(0, ysrc); const int vertLumPerChroma = 2; register unsigned int y; if(width&15){ yv12toyuy2( ysrc, usrc, vsrc, dst,c->srcW,srcSliceH, lumStride, chromStride, dstStride); return srcSliceH; } /* this code assume: 1) dst is 16 bytes-aligned 2) dstStride is a multiple of 16 3) width is a multiple of 16 4) lum&chrom stride are multiple of 8 */ for(y=0; y<height; y++) { int i; for (i = 0; i < width - 31; i+= 32) { const unsigned int j = i >> 1; vector unsigned char v_yA = vec_ld(i, ysrc); vector unsigned char v_yB = vec_ld(i + 16, ysrc); vector unsigned char v_yC = vec_ld(i + 32, ysrc); vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm); vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm); vector unsigned char v_uA = vec_ld(j, usrc); vector unsigned char v_uB = vec_ld(j + 16, usrc); vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc)); vector unsigned char v_vA = vec_ld(j, vsrc); vector unsigned char v_vB = vec_ld(j + 16, vsrc); vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc)); vector unsigned char v_uv_a = vec_mergeh(v_u, v_v); vector unsigned char v_uv_b = vec_mergel(v_u, v_v); vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a); vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a); vector unsigned char v_yuy2_2 = vec_mergeh(v_y2, v_uv_b); vector unsigned char v_yuy2_3 = vec_mergel(v_y2, v_uv_b); vec_st(v_yuy2_0, (i << 1), dst); vec_st(v_yuy2_1, (i << 1) + 16, dst); vec_st(v_yuy2_2, (i << 1) + 32, dst); vec_st(v_yuy2_3, (i << 1) + 48, dst); } if (i < width) { const unsigned int j = i >> 1; vector unsigned char v_y1 = vec_ld(i, ysrc); vector unsigned char v_u = vec_ld(j, usrc); vector unsigned char v_v = vec_ld(j, vsrc); vector unsigned char v_uv_a = vec_mergeh(v_u, v_v); vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a); vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a); vec_st(v_yuy2_0, (i << 1), dst); vec_st(v_yuy2_1, (i << 1) + 16, dst); } if((y&(vertLumPerChroma-1))==(vertLumPerChroma-1) ) { usrc += chromStride; vsrc += chromStride; } ysrc += lumStride; dst += dstStride; } return srcSliceH; }