1 /*****************************************************************************
2 * pixel.c: pixel metrics
3 *****************************************************************************
4 * Copyright (C) 2003-2011 x264 project
6 * Authors: Loren Merritt <lorenm@u.washington.edu>
7 * Laurent Aimar <fenrir@via.ecp.fr>
8 * Fiona Glaser <fiona@x264.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
24 * This program is also available under a commercial proprietary license.
25 * For more information, contact us at licensing@x264.com.
26 *****************************************************************************/
31 # include "x86/pixel.h"
34 # include "ppc/pixel.h"
37 # include "arm/pixel.h"
40 # include "sparc/pixel.h"
44 /****************************************************************************
46 ****************************************************************************/
47 #define PIXEL_SAD_C( name, lx, ly ) \
48 static int name( pixel *pix1, int i_stride_pix1, \
49 pixel *pix2, int i_stride_pix2 ) \
52 for( int y = 0; y < ly; y++ ) \
54 for( int x = 0; x < lx; x++ ) \
56 i_sum += abs( pix1[x] - pix2[x] ); \
58 pix1 += i_stride_pix1; \
59 pix2 += i_stride_pix2; \
65 PIXEL_SAD_C( x264_pixel_sad_16x16, 16, 16 )
66 PIXEL_SAD_C( x264_pixel_sad_16x8, 16, 8 )
67 PIXEL_SAD_C( x264_pixel_sad_8x16, 8, 16 )
68 PIXEL_SAD_C( x264_pixel_sad_8x8, 8, 8 )
69 PIXEL_SAD_C( x264_pixel_sad_8x4, 8, 4 )
70 PIXEL_SAD_C( x264_pixel_sad_4x8, 4, 8 )
71 PIXEL_SAD_C( x264_pixel_sad_4x4, 4, 4 )
74 /****************************************************************************
76 ****************************************************************************/
77 #define PIXEL_SSD_C( name, lx, ly ) \
78 static int name( pixel *pix1, int i_stride_pix1, \
79 pixel *pix2, int i_stride_pix2 ) \
82 for( int y = 0; y < ly; y++ ) \
84 for( int x = 0; x < lx; x++ ) \
86 int d = pix1[x] - pix2[x]; \
89 pix1 += i_stride_pix1; \
90 pix2 += i_stride_pix2; \
95 PIXEL_SSD_C( x264_pixel_ssd_16x16, 16, 16 )
96 PIXEL_SSD_C( x264_pixel_ssd_16x8, 16, 8 )
97 PIXEL_SSD_C( x264_pixel_ssd_8x16, 8, 16 )
98 PIXEL_SSD_C( x264_pixel_ssd_8x8, 8, 8 )
99 PIXEL_SSD_C( x264_pixel_ssd_8x4, 8, 4 )
100 PIXEL_SSD_C( x264_pixel_ssd_4x8, 4, 8 )
101 PIXEL_SSD_C( x264_pixel_ssd_4x4, 4, 4 )
103 uint64_t x264_pixel_ssd_wxh( x264_pixel_function_t *pf, pixel *pix1, int i_pix1, pixel *pix2, int i_pix2, int i_width, int i_height )
107 int align = !(((intptr_t)pix1 | (intptr_t)pix2 | i_pix1 | i_pix2) & 15);
109 #define SSD(size) i_ssd += pf->ssd[size]( pix1 + y*i_pix1 + x, i_pix1, \
110 pix2 + y*i_pix2 + x, i_pix2 );
111 for( y = 0; y < i_height-15; y += 16 )
115 for( ; x < i_width-15; x += 16 )
117 for( ; x < i_width-7; x += 8 )
121 for( int x = 0; x < i_width-7; x += 8 )
125 #define SSD1 { int d = pix1[y*i_pix1+x] - pix2[y*i_pix2+x]; i_ssd += d*d; }
128 for( y = 0; y < (i_height & ~7); y++ )
129 for( int x = i_width & ~7; x < i_width; x++ )
134 for( y = i_height & ~7; y < i_height; y++ )
135 for( int x = 0; x < i_width; x++ )
143 static void pixel_ssd_nv12_core( pixel *pixuv1, int stride1, pixel *pixuv2, int stride2, int width, int height, uint64_t *ssd_u, uint64_t *ssd_v )
145 *ssd_u = 0, *ssd_v = 0;
146 for( int y = 0; y < height; y++, pixuv1+=stride1, pixuv2+=stride2 )
147 for( int x = 0; x < width; x++ )
149 int du = pixuv1[2*x] - pixuv2[2*x];
150 int dv = pixuv1[2*x+1] - pixuv2[2*x+1];
156 void x264_pixel_ssd_nv12( x264_pixel_function_t *pf, pixel *pix1, int i_pix1, pixel *pix2, int i_pix2, int i_width, int i_height, uint64_t *ssd_u, uint64_t *ssd_v )
158 pf->ssd_nv12_core( pix1, i_pix1, pix2, i_pix2, i_width&~7, i_height, ssd_u, ssd_v );
162 pixel_ssd_nv12_core( pix1+(i_width&~7), i_pix1, pix2+(i_width&~7), i_pix2, i_width&7, i_height, &tmp[0], &tmp[1] );
168 /****************************************************************************
170 ****************************************************************************/
171 #define PIXEL_VAR_C( name, w ) \
172 static uint64_t name( pixel *pix, int i_stride ) \
174 uint32_t sum = 0, sqr = 0; \
175 for( int y = 0; y < w; y++ ) \
177 for( int x = 0; x < w; x++ ) \
180 sqr += pix[x] * pix[x]; \
184 return sum + ((uint64_t)sqr << 32); \
187 PIXEL_VAR_C( x264_pixel_var_16x16, 16 )
188 PIXEL_VAR_C( x264_pixel_var_8x8, 8 )
190 /****************************************************************************
192 ****************************************************************************/
193 static int pixel_var2_8x8( pixel *pix1, int i_stride1, pixel *pix2, int i_stride2, int *ssd )
195 uint32_t var = 0, sum = 0, sqr = 0;
196 for( int y = 0; y < 8; y++ )
198 for( int x = 0; x < 8; x++ )
200 int diff = pix1[x] - pix2[x];
208 var = sqr - ((uint64_t)sum * sum >> 6);
214 typedef uint32_t sum_t;
215 typedef uint64_t sum2_t;
217 typedef uint16_t sum_t;
218 typedef uint32_t sum2_t;
220 #define BITS_PER_SUM (8 * sizeof(sum_t))
222 #define HADAMARD4(d0, d1, d2, d3, s0, s1, s2, s3) {\
223 sum2_t t0 = s0 + s1;\
224 sum2_t t1 = s0 - s1;\
225 sum2_t t2 = s2 + s3;\
226 sum2_t t3 = s2 - s3;\
233 // in: a pseudo-simd number of the form x+(y<<16)
234 // return: abs(x)+(abs(y)<<16)
235 static ALWAYS_INLINE sum2_t abs2( sum2_t a )
237 sum2_t s = ((a>>(BITS_PER_SUM-1))&(((sum2_t)1<<BITS_PER_SUM)+1))*((sum_t)-1);
241 /****************************************************************************
242 * pixel_satd_WxH: sum of 4x4 Hadamard transformed differences
243 ****************************************************************************/
245 static NOINLINE int x264_pixel_satd_4x4( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
248 sum2_t a0, a1, a2, a3, b0, b1;
250 for( int i = 0; i < 4; i++, pix1 += i_pix1, pix2 += i_pix2 )
252 a0 = pix1[0] - pix2[0];
253 a1 = pix1[1] - pix2[1];
254 b0 = (a0+a1) + ((a0-a1)<<BITS_PER_SUM);
255 a2 = pix1[2] - pix2[2];
256 a3 = pix1[3] - pix2[3];
257 b1 = (a2+a3) + ((a2-a3)<<BITS_PER_SUM);
261 for( int i = 0; i < 2; i++ )
263 HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
264 a0 = abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
265 sum += ((sum_t)a0) + (a0>>BITS_PER_SUM);
270 static NOINLINE int x264_pixel_satd_8x4( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
273 sum2_t a0, a1, a2, a3;
275 for( int i = 0; i < 4; i++, pix1 += i_pix1, pix2 += i_pix2 )
277 a0 = (pix1[0] - pix2[0]) + ((sum2_t)(pix1[4] - pix2[4]) << BITS_PER_SUM);
278 a1 = (pix1[1] - pix2[1]) + ((sum2_t)(pix1[5] - pix2[5]) << BITS_PER_SUM);
279 a2 = (pix1[2] - pix2[2]) + ((sum2_t)(pix1[6] - pix2[6]) << BITS_PER_SUM);
280 a3 = (pix1[3] - pix2[3]) + ((sum2_t)(pix1[7] - pix2[7]) << BITS_PER_SUM);
281 HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], a0,a1,a2,a3 );
283 for( int i = 0; i < 4; i++ )
285 HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
286 sum += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
288 return (((sum_t)sum) + (sum>>BITS_PER_SUM)) >> 1;
291 #define PIXEL_SATD_C( w, h, sub )\
292 static int x264_pixel_satd_##w##x##h( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )\
294 int sum = sub( pix1, i_pix1, pix2, i_pix2 )\
295 + sub( pix1+4*i_pix1, i_pix1, pix2+4*i_pix2, i_pix2 );\
297 sum+= sub( pix1+8, i_pix1, pix2+8, i_pix2 )\
298 + sub( pix1+8+4*i_pix1, i_pix1, pix2+8+4*i_pix2, i_pix2 );\
300 sum+= sub( pix1+8*i_pix1, i_pix1, pix2+8*i_pix2, i_pix2 )\
301 + sub( pix1+12*i_pix1, i_pix1, pix2+12*i_pix2, i_pix2 );\
302 if( w==16 && h==16 )\
303 sum+= sub( pix1+8+8*i_pix1, i_pix1, pix2+8+8*i_pix2, i_pix2 )\
304 + sub( pix1+8+12*i_pix1, i_pix1, pix2+8+12*i_pix2, i_pix2 );\
307 PIXEL_SATD_C( 16, 16, x264_pixel_satd_8x4 )
308 PIXEL_SATD_C( 16, 8, x264_pixel_satd_8x4 )
309 PIXEL_SATD_C( 8, 16, x264_pixel_satd_8x4 )
310 PIXEL_SATD_C( 8, 8, x264_pixel_satd_8x4 )
311 PIXEL_SATD_C( 4, 8, x264_pixel_satd_4x4 )
314 static NOINLINE int sa8d_8x8( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
317 sum2_t a0, a1, a2, a3, a4, a5, a6, a7, b0, b1, b2, b3;
319 for( int i = 0; i < 8; i++, pix1 += i_pix1, pix2 += i_pix2 )
321 a0 = pix1[0] - pix2[0];
322 a1 = pix1[1] - pix2[1];
323 b0 = (a0+a1) + ((a0-a1)<<BITS_PER_SUM);
324 a2 = pix1[2] - pix2[2];
325 a3 = pix1[3] - pix2[3];
326 b1 = (a2+a3) + ((a2-a3)<<BITS_PER_SUM);
327 a4 = pix1[4] - pix2[4];
328 a5 = pix1[5] - pix2[5];
329 b2 = (a4+a5) + ((a4-a5)<<BITS_PER_SUM);
330 a6 = pix1[6] - pix2[6];
331 a7 = pix1[7] - pix2[7];
332 b3 = (a6+a7) + ((a6-a7)<<BITS_PER_SUM);
333 HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], b0,b1,b2,b3 );
335 for( int i = 0; i < 4; i++ )
337 HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
338 HADAMARD4( a4, a5, a6, a7, tmp[4][i], tmp[5][i], tmp[6][i], tmp[7][i] );
339 b0 = abs2(a0+a4) + abs2(a0-a4);
340 b0 += abs2(a1+a5) + abs2(a1-a5);
341 b0 += abs2(a2+a6) + abs2(a2-a6);
342 b0 += abs2(a3+a7) + abs2(a3-a7);
343 sum += (sum_t)b0 + (b0>>BITS_PER_SUM);
348 static int x264_pixel_sa8d_8x8( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
350 int sum = sa8d_8x8( pix1, i_pix1, pix2, i_pix2 );
354 static int x264_pixel_sa8d_16x16( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
356 int sum = sa8d_8x8( pix1, i_pix1, pix2, i_pix2 )
357 + sa8d_8x8( pix1+8, i_pix1, pix2+8, i_pix2 )
358 + sa8d_8x8( pix1+8*i_pix1, i_pix1, pix2+8*i_pix2, i_pix2 )
359 + sa8d_8x8( pix1+8+8*i_pix1, i_pix1, pix2+8+8*i_pix2, i_pix2 );
364 static NOINLINE uint64_t pixel_hadamard_ac( pixel *pix, int stride )
367 sum2_t a0, a1, a2, a3, dc;
368 sum2_t sum4 = 0, sum8 = 0;
369 for( int i = 0; i < 8; i++, pix+=stride )
371 sum2_t *t = tmp + (i&3) + (i&4)*4;
372 a0 = (pix[0]+pix[1]) + ((sum2_t)(pix[0]-pix[1])<<BITS_PER_SUM);
373 a1 = (pix[2]+pix[3]) + ((sum2_t)(pix[2]-pix[3])<<BITS_PER_SUM);
376 a2 = (pix[4]+pix[5]) + ((sum2_t)(pix[4]-pix[5])<<BITS_PER_SUM);
377 a3 = (pix[6]+pix[7]) + ((sum2_t)(pix[6]-pix[7])<<BITS_PER_SUM);
381 for( int i = 0; i < 8; i++ )
383 HADAMARD4( a0, a1, a2, a3, tmp[i*4+0], tmp[i*4+1], tmp[i*4+2], tmp[i*4+3] );
388 sum4 += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
390 for( int i = 0; i < 8; i++ )
392 HADAMARD4( a0,a1,a2,a3, tmp[i], tmp[8+i], tmp[16+i], tmp[24+i] );
393 sum8 += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
395 dc = (sum_t)(tmp[0] + tmp[8] + tmp[16] + tmp[24]);
396 sum4 = (sum_t)sum4 + (sum4>>BITS_PER_SUM) - dc;
397 sum8 = (sum_t)sum8 + (sum8>>BITS_PER_SUM) - dc;
398 return ((uint64_t)sum8<<32) + sum4;
401 #define HADAMARD_AC(w,h) \
402 static uint64_t x264_pixel_hadamard_ac_##w##x##h( pixel *pix, int stride )\
404 uint64_t sum = pixel_hadamard_ac( pix, stride );\
406 sum += pixel_hadamard_ac( pix+8, stride );\
408 sum += pixel_hadamard_ac( pix+8*stride, stride );\
409 if( w==16 && h==16 )\
410 sum += pixel_hadamard_ac( pix+8*stride+8, stride );\
411 return ((sum>>34)<<32) + ((uint32_t)sum>>1);\
413 HADAMARD_AC( 16, 16 )
419 /****************************************************************************
421 ****************************************************************************/
422 #define SAD_X( size ) \
423 static void x264_pixel_sad_x3_##size( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, int i_stride, int scores[3] )\
425 scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
426 scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
427 scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
429 static void x264_pixel_sad_x4_##size( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, pixel *pix3, int i_stride, int scores[4] )\
431 scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
432 scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
433 scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
434 scores[3] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix3, i_stride );\
452 #endif // !HIGH_BIT_DEPTH
454 /****************************************************************************
456 * no faster than single satd, but needed for satd to be a drop-in replacement for sad
457 ****************************************************************************/
459 #define SATD_X( size, cpu ) \
460 static void x264_pixel_satd_x3_##size##cpu( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, int i_stride, int scores[3] )\
462 scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
463 scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
464 scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
466 static void x264_pixel_satd_x4_##size##cpu( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, pixel *pix3, int i_stride, int scores[4] )\
468 scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
469 scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
470 scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
471 scores[3] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix3, i_stride );\
473 #define SATD_X_DECL6( cpu )\
474 SATD_X( 16x16, cpu )\
480 #define SATD_X_DECL7( cpu )\
486 SATD_X_DECL7( _mmxext )
488 SATD_X_DECL6( _sse2 )
489 SATD_X_DECL7( _ssse3 )
490 SATD_X_DECL7( _sse4 )
492 #endif // !HIGH_BIT_DEPTH
497 SATD_X_DECL7( _neon )
499 #endif // !HIGH_BIT_DEPTH
501 #define INTRA_MBCMP_8x8( mbcmp, cpu )\
502 void x264_intra_##mbcmp##_x3_8x8##cpu( pixel *fenc, pixel edge[33], int res[3] )\
504 ALIGNED_ARRAY_16( pixel, pix, [8*FDEC_STRIDE] );\
505 x264_predict_8x8_v_c( pix, edge );\
506 res[0] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
507 x264_predict_8x8_h_c( pix, edge );\
508 res[1] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
509 x264_predict_8x8_dc_c( pix, edge );\
510 res[2] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
513 INTRA_MBCMP_8x8( sad, )
514 INTRA_MBCMP_8x8(sa8d, )
515 #if HIGH_BIT_DEPTH && HAVE_MMX
516 INTRA_MBCMP_8x8( sad, _mmxext)
517 INTRA_MBCMP_8x8( sad, _sse2 )
518 INTRA_MBCMP_8x8( sad, _ssse3 )
519 INTRA_MBCMP_8x8(sa8d, _sse2 )
522 #define INTRA_MBCMP( mbcmp, size, pred1, pred2, pred3, chroma, cpu )\
523 void x264_intra_##mbcmp##_x3_##size##x##size##chroma##cpu( pixel *fenc, pixel *fdec, int res[3] )\
525 x264_predict_##size##x##size##chroma##_##pred1##_c( fdec );\
526 res[0] = x264_pixel_##mbcmp##_##size##x##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
527 x264_predict_##size##x##size##chroma##_##pred2##_c( fdec );\
528 res[1] = x264_pixel_##mbcmp##_##size##x##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
529 x264_predict_##size##x##size##chroma##_##pred3##_c( fdec );\
530 res[2] = x264_pixel_##mbcmp##_##size##x##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
533 INTRA_MBCMP( sad, 4, v, h, dc, , )
534 INTRA_MBCMP(satd, 4, v, h, dc, , )
535 INTRA_MBCMP( sad, 8, dc, h, v, c, )
536 INTRA_MBCMP(satd, 8, dc, h, v, c, )
537 INTRA_MBCMP( sad, 16, v, h, dc, , )
538 INTRA_MBCMP(satd, 16, v, h, dc, , )
540 #if HIGH_BIT_DEPTH && HAVE_MMX
541 INTRA_MBCMP( sad, 4, v, h, dc, , _mmxext)
542 INTRA_MBCMP(satd, 4, v, h, dc, , _mmxext)
543 INTRA_MBCMP( sad, 8, dc, h, v, c, _mmxext)
544 INTRA_MBCMP(satd, 8, dc, h, v, c, _mmxext)
545 INTRA_MBCMP( sad, 16, v, h, dc, , _mmxext)
546 INTRA_MBCMP(satd, 16, v, h, dc, , _mmxext)
547 INTRA_MBCMP( sad, 8, dc, h, v, c, _sse2 )
548 INTRA_MBCMP( sad, 16, v, h, dc, , _sse2 )
549 INTRA_MBCMP( sad, 8, dc, h, v, c, _ssse3 )
550 INTRA_MBCMP( sad, 16, v, h, dc, , _ssse3 )
553 /****************************************************************************
554 * structural similarity metric
555 ****************************************************************************/
556 static void ssim_4x4x2_core( const pixel *pix1, int stride1,
557 const pixel *pix2, int stride2,
560 for( int z = 0; z < 2; z++ )
562 uint32_t s1 = 0, s2 = 0, ss = 0, s12 = 0;
563 for( int y = 0; y < 4; y++ )
564 for( int x = 0; x < 4; x++ )
566 int a = pix1[x+y*stride1];
567 int b = pix2[x+y*stride2];
583 static float ssim_end1( int s1, int s2, int ss, int s12 )
585 /* Maximum value for 10-bit is: ss*64 = (2^10-1)^2*16*4*64 = 4286582784, which will overflow in some cases.
586 * s1*s1, s2*s2, and s1*s2 also obtain this value for edge cases: ((2^10-1)*16*4)^2 = 4286582784.
587 * Maximum value for 9-bit is: ss*64 = (2^9-1)^2*16*4*64 = 1069551616, which will not overflow. */
590 static const float ssim_c1 = .01*.01*PIXEL_MAX*PIXEL_MAX*64;
591 static const float ssim_c2 = .03*.03*PIXEL_MAX*PIXEL_MAX*64*63;
594 static const int ssim_c1 = (int)(.01*.01*PIXEL_MAX*PIXEL_MAX*64 + .5);
595 static const int ssim_c2 = (int)(.03*.03*PIXEL_MAX*PIXEL_MAX*64*63 + .5);
601 type vars = fss*64 - fs1*fs1 - fs2*fs2;
602 type covar = fs12*64 - fs1*fs2;
603 return (float)(2*fs1*fs2 + ssim_c1) * (float)(2*covar + ssim_c2)
604 / ((float)(fs1*fs1 + fs2*fs2 + ssim_c1) * (float)(vars + ssim_c2));
608 static float ssim_end4( int sum0[5][4], int sum1[5][4], int width )
611 for( int i = 0; i < width; i++ )
612 ssim += ssim_end1( sum0[i][0] + sum0[i+1][0] + sum1[i][0] + sum1[i+1][0],
613 sum0[i][1] + sum0[i+1][1] + sum1[i][1] + sum1[i+1][1],
614 sum0[i][2] + sum0[i+1][2] + sum1[i][2] + sum1[i+1][2],
615 sum0[i][3] + sum0[i+1][3] + sum1[i][3] + sum1[i+1][3] );
619 float x264_pixel_ssim_wxh( x264_pixel_function_t *pf,
620 pixel *pix1, int stride1,
621 pixel *pix2, int stride2,
622 int width, int height, void *buf )
626 int (*sum0)[4] = buf;
627 int (*sum1)[4] = sum0 + (width >> 2) + 3;
630 for( int y = 1; y < height; y++ )
634 XCHG( void*, sum0, sum1 );
635 for( int x = 0; x < width; x+=2 )
636 pf->ssim_4x4x2_core( &pix1[4*(x+z*stride1)], stride1, &pix2[4*(x+z*stride2)], stride2, &sum0[x] );
638 for( int x = 0; x < width-1; x += 4 )
639 ssim += pf->ssim_end4( sum0+x, sum1+x, X264_MIN(4,width-x-1) );
645 /****************************************************************************
646 * successive elimination
647 ****************************************************************************/
648 static int x264_pixel_ads4( int enc_dc[4], uint16_t *sums, int delta,
649 uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
652 for( int i = 0; i < width; i++, sums++ )
654 int ads = abs( enc_dc[0] - sums[0] )
655 + abs( enc_dc[1] - sums[8] )
656 + abs( enc_dc[2] - sums[delta] )
657 + abs( enc_dc[3] - sums[delta+8] )
665 static int x264_pixel_ads2( int enc_dc[2], uint16_t *sums, int delta,
666 uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
669 for( int i = 0; i < width; i++, sums++ )
671 int ads = abs( enc_dc[0] - sums[0] )
672 + abs( enc_dc[1] - sums[delta] )
680 static int x264_pixel_ads1( int enc_dc[1], uint16_t *sums, int delta,
681 uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
684 for( int i = 0; i<width; i++, sums++ )
686 int ads = abs( enc_dc[0] - sums[0] )
695 /****************************************************************************
697 ****************************************************************************/
698 void x264_pixel_init( int cpu, x264_pixel_function_t *pixf )
700 memset( pixf, 0, sizeof(*pixf) );
702 #define INIT2_NAME( name1, name2, cpu ) \
703 pixf->name1[PIXEL_16x16] = x264_pixel_##name2##_16x16##cpu;\
704 pixf->name1[PIXEL_16x8] = x264_pixel_##name2##_16x8##cpu;
705 #define INIT4_NAME( name1, name2, cpu ) \
706 INIT2_NAME( name1, name2, cpu ) \
707 pixf->name1[PIXEL_8x16] = x264_pixel_##name2##_8x16##cpu;\
708 pixf->name1[PIXEL_8x8] = x264_pixel_##name2##_8x8##cpu;
709 #define INIT5_NAME( name1, name2, cpu ) \
710 INIT4_NAME( name1, name2, cpu ) \
711 pixf->name1[PIXEL_8x4] = x264_pixel_##name2##_8x4##cpu;
712 #define INIT6_NAME( name1, name2, cpu ) \
713 INIT5_NAME( name1, name2, cpu ) \
714 pixf->name1[PIXEL_4x8] = x264_pixel_##name2##_4x8##cpu;
715 #define INIT7_NAME( name1, name2, cpu ) \
716 INIT6_NAME( name1, name2, cpu ) \
717 pixf->name1[PIXEL_4x4] = x264_pixel_##name2##_4x4##cpu;
718 #define INIT2( name, cpu ) INIT2_NAME( name, name, cpu )
719 #define INIT4( name, cpu ) INIT4_NAME( name, name, cpu )
720 #define INIT5( name, cpu ) INIT5_NAME( name, name, cpu )
721 #define INIT6( name, cpu ) INIT6_NAME( name, name, cpu )
722 #define INIT7( name, cpu ) INIT7_NAME( name, name, cpu )
724 #define INIT_ADS( cpu ) \
725 pixf->ads[PIXEL_16x16] = x264_pixel_ads4##cpu;\
726 pixf->ads[PIXEL_16x8] = x264_pixel_ads2##cpu;\
727 pixf->ads[PIXEL_8x8] = x264_pixel_ads1##cpu;
730 INIT7_NAME( sad_aligned, sad, );
737 INIT4( hadamard_ac, );
740 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16;
741 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8;
742 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16;
743 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8;
745 pixf->ssd_nv12_core = pixel_ssd_nv12_core;
746 pixf->ssim_4x4x2_core = ssim_4x4x2_core;
747 pixf->ssim_end4 = ssim_end4;
748 pixf->var2_8x8 = pixel_var2_8x8;
750 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4;
751 pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4;
752 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8;
753 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8;
754 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c;
755 pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c;
756 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16;
757 pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16;
761 if( cpu&X264_CPU_MMXEXT )
763 INIT7( sad, _mmxext );
764 INIT7( sad_x3, _mmxext );
765 INIT7( sad_x4, _mmxext );
766 INIT7( satd, _mmxext );
767 INIT7( satd_x3, _mmxext );
768 INIT7( satd_x4, _mmxext );
769 INIT4( hadamard_ac, _mmxext );
770 INIT7( ssd, _mmxext );
773 pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_mmxext;
774 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_mmxext;
775 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_mmxext;
776 pixf->var2_8x8 = x264_pixel_var2_8x8_mmxext;
778 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_mmxext;
779 pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4_mmxext;
780 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_mmxext;
781 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_mmxext;
782 pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c_mmxext;
783 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_mmxext;
784 pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_mmxext;
786 if( cpu&X264_CPU_SSE2 )
788 INIT4_NAME( sad_aligned, sad, _sse2_aligned );
791 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_sse2;
792 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_sse2;
794 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_sse2;
796 pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_sse2;
797 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_sse2;
798 pixf->ssim_end4 = x264_pixel_ssim_end4_sse2;
799 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_sse2;
800 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_sse2;
801 pixf->var2_8x8 = x264_pixel_var2_8x8_sse2;
803 if( (cpu&X264_CPU_SSE2) && !(cpu&X264_CPU_SSE2_IS_SLOW) )
806 INIT2( sad_x3, _sse2 );
807 INIT2( sad_x4, _sse2 );
810 if( !(cpu&X264_CPU_STACK_MOD4) )
812 INIT4( hadamard_ac, _sse2 );
815 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_sse2;
816 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_sse2;
817 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_sse2;
819 if( cpu&X264_CPU_SSE2_IS_FAST )
821 pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
822 pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_sse2;
823 pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_sse2;
824 pixf->sad_x3[PIXEL_8x4] = x264_pixel_sad_x3_8x4_sse2;
825 pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_sse2;
826 pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_sse2;
827 pixf->sad_x4[PIXEL_8x4] = x264_pixel_sad_x4_8x4_sse2;
829 if( cpu&X264_CPU_SSSE3 )
831 INIT4_NAME( sad_aligned, sad, _ssse3_aligned );
832 INIT7( sad, _ssse3 );
833 INIT7( sad_x3, _ssse3 );
834 INIT7( sad_x4, _ssse3 );
837 if( !(cpu&X264_CPU_STACK_MOD4) )
839 INIT4( hadamard_ac, _ssse3 );
842 pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_ssse3;
843 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_ssse3;
844 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_ssse3;
845 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_ssse3;
846 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_ssse3;
849 #else // !HIGH_BIT_DEPTH
851 if( cpu&X264_CPU_MMX )
856 if( cpu&X264_CPU_MMXEXT )
858 INIT7( sad, _mmxext );
859 INIT7_NAME( sad_aligned, sad, _mmxext );
860 INIT7( sad_x3, _mmxext );
861 INIT7( sad_x4, _mmxext );
862 INIT7( satd, _mmxext );
863 INIT7( satd_x3, _mmxext );
864 INIT7( satd_x4, _mmxext );
865 INIT4( hadamard_ac, _mmxext );
867 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_mmxext;
868 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_mmxext;
869 pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_mmxext;
871 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_mmxext;
872 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_mmxext;
873 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_mmxext;
874 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_mmxext;
875 pixf->var2_8x8 = x264_pixel_var2_8x8_mmxext;
877 if( cpu&X264_CPU_CACHELINE_32 )
879 INIT5( sad, _cache32_mmxext );
880 INIT4( sad_x3, _cache32_mmxext );
881 INIT4( sad_x4, _cache32_mmxext );
883 else if( cpu&X264_CPU_CACHELINE_64 )
885 INIT5( sad, _cache64_mmxext );
886 INIT4( sad_x3, _cache64_mmxext );
887 INIT4( sad_x4, _cache64_mmxext );
890 if( cpu&X264_CPU_CACHELINE_64 )
892 pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_cache64_mmxext;
893 pixf->sad[PIXEL_8x8] = x264_pixel_sad_8x8_cache64_mmxext;
894 pixf->sad[PIXEL_8x4] = x264_pixel_sad_8x4_cache64_mmxext;
895 pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_mmxext;
896 pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_cache64_mmxext;
897 pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_mmxext;
898 pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_cache64_mmxext;
901 pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_mmxext;
902 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_mmxext;
903 pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c_mmxext;
904 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_mmxext;
905 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_mmxext;
906 pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4_mmxext;
907 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_mmxext;
910 if( cpu&X264_CPU_SSE2 )
912 INIT5( ssd, _sse2slow );
913 INIT2_NAME( sad_aligned, sad, _sse2_aligned );
914 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_sse2;
915 pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_sse2;
916 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_sse2;
917 pixf->ssim_end4 = x264_pixel_ssim_end4_sse2;
918 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_sse2;
919 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_sse2;
921 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_sse2;
923 pixf->var2_8x8 = x264_pixel_var2_8x8_sse2;
926 if( (cpu&X264_CPU_SSE2) && !(cpu&X264_CPU_SSE2_IS_SLOW) )
929 INIT2( sad_x3, _sse2 );
930 INIT2( sad_x4, _sse2 );
931 INIT6( satd, _sse2 );
932 INIT6( satd_x3, _sse2 );
933 INIT6( satd_x4, _sse2 );
934 if( !(cpu&X264_CPU_STACK_MOD4) )
936 INIT4( hadamard_ac, _sse2 );
939 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_sse2;
940 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_sse2;
941 if( cpu&X264_CPU_CACHELINE_64 )
943 INIT2( ssd, _sse2); /* faster for width 16 on p4 */
945 INIT2( sad, _cache64_sse2 );
946 INIT2( sad_x3, _cache64_sse2 );
947 INIT2( sad_x4, _cache64_sse2 );
949 if( cpu&X264_CPU_SSE2_IS_FAST )
951 pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_sse2;
952 pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_sse2;
956 if( cpu&X264_CPU_SSE_MISALIGN )
958 INIT2( sad_x3, _sse2_misalign );
959 INIT2( sad_x4, _sse2_misalign );
963 if( cpu&X264_CPU_SSE2_IS_FAST && !(cpu&X264_CPU_CACHELINE_64) )
965 pixf->sad_aligned[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
966 pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
967 pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_sse2;
968 pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_sse2;
969 pixf->sad_x3[PIXEL_8x4] = x264_pixel_sad_x3_8x4_sse2;
970 pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_sse2;
971 pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_sse2;
972 pixf->sad_x4[PIXEL_8x4] = x264_pixel_sad_x4_8x4_sse2;
975 if( (cpu&X264_CPU_SSE3) && (cpu&X264_CPU_CACHELINE_64) )
978 INIT2( sad_x3, _sse3 );
979 INIT2( sad_x4, _sse3 );
982 if( cpu&X264_CPU_SSSE3 )
984 if( !(cpu&X264_CPU_STACK_MOD4) )
986 INIT4( hadamard_ac, _ssse3 );
989 if( !(cpu&X264_CPU_SLOW_ATOM) )
991 INIT7( ssd, _ssse3 );
992 pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_ssse3;
993 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_ssse3;
994 INIT7( satd, _ssse3 );
995 INIT7( satd_x3, _ssse3 );
996 INIT7( satd_x4, _ssse3 );
998 pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_ssse3;
999 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_ssse3;
1000 pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c_ssse3;
1001 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_ssse3;
1002 pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4_ssse3;
1004 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_ssse3;
1006 pixf->var2_8x8 = x264_pixel_var2_8x8_ssse3;
1007 if( cpu&X264_CPU_CACHELINE_64 )
1009 INIT2( sad, _cache64_ssse3 );
1010 INIT2( sad_x3, _cache64_ssse3 );
1011 INIT2( sad_x4, _cache64_ssse3 );
1013 if( cpu&X264_CPU_SLOW_ATOM || !(cpu&X264_CPU_SHUFFLE_IS_FAST) )
1015 INIT5( ssd, _sse2 ); /* on conroe, sse2 is faster for width8/16 */
1019 if( cpu&X264_CPU_SSE4 )
1021 INIT7( satd, _sse4 );
1022 INIT7( satd_x3, _sse4 );
1023 INIT7( satd_x4, _sse4 );
1024 if( !(cpu&X264_CPU_STACK_MOD4) )
1026 INIT4( hadamard_ac, _sse4 );
1028 pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_sse4;
1029 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_sse4;
1030 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_sse4;
1031 /* Slower on Conroe, so only enable under SSE4 */
1032 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_ssse3;
1035 if( cpu&X264_CPU_AVX )
1037 INIT7( satd, _avx );
1038 INIT7( satd_x3, _avx );
1039 INIT7( satd_x4, _avx );
1040 pixf->ads[PIXEL_16x16] = x264_pixel_ads4_avx;
1041 pixf->ads[PIXEL_16x8] = x264_pixel_ads2_avx;
1042 if( !(cpu&X264_CPU_STACK_MOD4) )
1044 INIT4( hadamard_ac, _avx );
1048 pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_avx;
1049 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_avx;
1050 pixf->intra_sa8d_x3_8x8= x264_intra_sa8d_x3_8x8_avx;
1052 pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_avx;
1053 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_avx;
1054 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_avx;
1055 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_avx;
1056 pixf->ssim_end4 = x264_pixel_ssim_end4_avx;
1057 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_avx;
1058 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_avx;
1063 if( cpu&X264_CPU_ARMV6 )
1065 pixf->sad[PIXEL_4x8] = x264_pixel_sad_4x8_armv6;
1066 pixf->sad[PIXEL_4x4] = x264_pixel_sad_4x4_armv6;
1067 pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_4x8_armv6;
1068 pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_4x4_armv6;
1070 if( cpu&X264_CPU_NEON )
1072 INIT5( sad, _neon );
1073 INIT5( sad_aligned, _neon );
1074 INIT7( sad_x3, _neon );
1075 INIT7( sad_x4, _neon );
1076 INIT7( ssd, _neon );
1077 INIT7( satd, _neon );
1078 INIT7( satd_x3, _neon );
1079 INIT7( satd_x4, _neon );
1080 INIT4( hadamard_ac, _neon );
1081 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_neon;
1082 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_neon;
1083 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_neon;
1084 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_neon;
1085 pixf->var2_8x8 = x264_pixel_var2_8x8_neon;
1087 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_neon;
1088 pixf->ssim_end4 = x264_pixel_ssim_end4_neon;
1090 if( cpu&X264_CPU_FAST_NEON_MRC )
1092 pixf->sad[PIXEL_4x8] = x264_pixel_sad_4x8_neon;
1093 pixf->sad[PIXEL_4x4] = x264_pixel_sad_4x4_neon;
1094 pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_aligned_4x8_neon;
1095 pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_aligned_4x4_neon;
1097 else // really just scheduled for dual issue / A8
1099 INIT5( sad_aligned, _neon_dual );
1103 #endif // HIGH_BIT_DEPTH
1105 if( cpu&X264_CPU_ALTIVEC )
1107 x264_pixel_altivec_init( pixf );
1113 INIT4( sad_x3, _vis );
1114 INIT4( sad_x4, _vis );
1116 #endif // !HIGH_BIT_DEPTH
1118 pixf->ads[PIXEL_8x16] =
1119 pixf->ads[PIXEL_8x4] =
1120 pixf->ads[PIXEL_4x8] = pixf->ads[PIXEL_16x8];
1121 pixf->ads[PIXEL_4x4] = pixf->ads[PIXEL_8x8];