1 /*****************************************************************************
2 * pixel.c: pixel metrics
3 *****************************************************************************
4 * Copyright (C) 2003-2010 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 );\
445 #if !X264_HIGH_BIT_DEPTH
452 #endif // !X264_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 )\
485 #if !X264_HIGH_BIT_DEPTH
487 SATD_X_DECL7( _mmxext )
488 SATD_X_DECL6( _sse2 )
489 SATD_X_DECL7( _ssse3 )
490 SATD_X_DECL7( _sse4 )
494 SATD_X_DECL7( _neon )
496 #endif // !X264_HIGH_BIT_DEPTH
498 #define INTRA_MBCMP_8x8( mbcmp )\
499 void x264_intra_##mbcmp##_x3_8x8( pixel *fenc, pixel edge[33], int res[3] )\
501 pixel pix[8*FDEC_STRIDE];\
502 x264_predict_8x8_v_c( pix, edge );\
503 res[0] = x264_pixel_##mbcmp##_8x8( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
504 x264_predict_8x8_h_c( pix, edge );\
505 res[1] = x264_pixel_##mbcmp##_8x8( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
506 x264_predict_8x8_dc_c( pix, edge );\
507 res[2] = x264_pixel_##mbcmp##_8x8( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
511 INTRA_MBCMP_8x8(sa8d)
513 #define INTRA_MBCMP( mbcmp, size, pred1, pred2, pred3, chroma )\
514 void x264_intra_##mbcmp##_x3_##size##x##size##chroma( pixel *fenc, pixel *fdec, int res[3] )\
516 x264_predict_##size##x##size##chroma##_##pred1##_c( fdec );\
517 res[0] = x264_pixel_##mbcmp##_##size##x##size( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
518 x264_predict_##size##x##size##chroma##_##pred2##_c( fdec );\
519 res[1] = x264_pixel_##mbcmp##_##size##x##size( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
520 x264_predict_##size##x##size##chroma##_##pred3##_c( fdec );\
521 res[2] = x264_pixel_##mbcmp##_##size##x##size( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
524 INTRA_MBCMP(sad, 4, v, h, dc, )
525 INTRA_MBCMP(satd, 4, v, h, dc, )
526 INTRA_MBCMP(sad, 8, dc, h, v, c )
527 INTRA_MBCMP(satd, 8, dc, h, v, c )
528 INTRA_MBCMP(sad, 16, v, h, dc, )
529 INTRA_MBCMP(satd, 16, v, h, dc, )
531 /****************************************************************************
532 * structural similarity metric
533 ****************************************************************************/
534 static void ssim_4x4x2_core( const pixel *pix1, int stride1,
535 const pixel *pix2, int stride2,
538 for( int z = 0; z < 2; z++ )
540 uint32_t s1 = 0, s2 = 0, ss = 0, s12 = 0;
541 for( int y = 0; y < 4; y++ )
542 for( int x = 0; x < 4; x++ )
544 int a = pix1[x+y*stride1];
545 int b = pix2[x+y*stride2];
561 static float ssim_end1( int s1, int s2, int ss, int s12 )
563 static const int ssim_c1 = (int)(.01*.01*PIXEL_MAX*PIXEL_MAX*64 + .5);
564 static const int ssim_c2 = (int)(.03*.03*PIXEL_MAX*PIXEL_MAX*64*63 + .5);
565 int vars = ss*64 - s1*s1 - s2*s2;
566 int covar = s12*64 - s1*s2;
567 return (float)(2*s1*s2 + ssim_c1) * (float)(2*covar + ssim_c2)
568 / ((float)(s1*s1 + s2*s2 + ssim_c1) * (float)(vars + ssim_c2));
571 static float ssim_end4( int sum0[5][4], int sum1[5][4], int width )
574 for( int i = 0; i < width; i++ )
575 ssim += ssim_end1( sum0[i][0] + sum0[i+1][0] + sum1[i][0] + sum1[i+1][0],
576 sum0[i][1] + sum0[i+1][1] + sum1[i][1] + sum1[i+1][1],
577 sum0[i][2] + sum0[i+1][2] + sum1[i][2] + sum1[i+1][2],
578 sum0[i][3] + sum0[i+1][3] + sum1[i][3] + sum1[i+1][3] );
582 float x264_pixel_ssim_wxh( x264_pixel_function_t *pf,
583 pixel *pix1, int stride1,
584 pixel *pix2, int stride2,
585 int width, int height, void *buf )
589 int (*sum0)[4] = buf;
590 int (*sum1)[4] = sum0 + (width >> 2) + 3;
593 for( int y = 1; y < height; y++ )
597 XCHG( void*, sum0, sum1 );
598 for( int x = 0; x < width; x+=2 )
599 pf->ssim_4x4x2_core( &pix1[4*(x+z*stride1)], stride1, &pix2[4*(x+z*stride2)], stride2, &sum0[x] );
601 for( int x = 0; x < width-1; x += 4 )
602 ssim += pf->ssim_end4( sum0+x, sum1+x, X264_MIN(4,width-x-1) );
608 /****************************************************************************
609 * successive elimination
610 ****************************************************************************/
611 static int x264_pixel_ads4( int enc_dc[4], uint16_t *sums, int delta,
612 uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
615 for( int i = 0; i < width; i++, sums++ )
617 int ads = abs( enc_dc[0] - sums[0] )
618 + abs( enc_dc[1] - sums[8] )
619 + abs( enc_dc[2] - sums[delta] )
620 + abs( enc_dc[3] - sums[delta+8] )
628 static int x264_pixel_ads2( int enc_dc[2], uint16_t *sums, int delta,
629 uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
632 for( int i = 0; i < width; i++, sums++ )
634 int ads = abs( enc_dc[0] - sums[0] )
635 + abs( enc_dc[1] - sums[delta] )
643 static int x264_pixel_ads1( int enc_dc[1], uint16_t *sums, int delta,
644 uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
647 for( int i = 0; i<width; i++, sums++ )
649 int ads = abs( enc_dc[0] - sums[0] )
658 /****************************************************************************
660 ****************************************************************************/
661 void x264_pixel_init( int cpu, x264_pixel_function_t *pixf )
663 memset( pixf, 0, sizeof(*pixf) );
665 #define INIT2_NAME( name1, name2, cpu ) \
666 pixf->name1[PIXEL_16x16] = x264_pixel_##name2##_16x16##cpu;\
667 pixf->name1[PIXEL_16x8] = x264_pixel_##name2##_16x8##cpu;
668 #define INIT4_NAME( name1, name2, cpu ) \
669 INIT2_NAME( name1, name2, cpu ) \
670 pixf->name1[PIXEL_8x16] = x264_pixel_##name2##_8x16##cpu;\
671 pixf->name1[PIXEL_8x8] = x264_pixel_##name2##_8x8##cpu;
672 #define INIT5_NAME( name1, name2, cpu ) \
673 INIT4_NAME( name1, name2, cpu ) \
674 pixf->name1[PIXEL_8x4] = x264_pixel_##name2##_8x4##cpu;
675 #define INIT6_NAME( name1, name2, cpu ) \
676 INIT5_NAME( name1, name2, cpu ) \
677 pixf->name1[PIXEL_4x8] = x264_pixel_##name2##_4x8##cpu;
678 #define INIT7_NAME( name1, name2, cpu ) \
679 INIT6_NAME( name1, name2, cpu ) \
680 pixf->name1[PIXEL_4x4] = x264_pixel_##name2##_4x4##cpu;
681 #define INIT2( name, cpu ) INIT2_NAME( name, name, cpu )
682 #define INIT4( name, cpu ) INIT4_NAME( name, name, cpu )
683 #define INIT5( name, cpu ) INIT5_NAME( name, name, cpu )
684 #define INIT6( name, cpu ) INIT6_NAME( name, name, cpu )
685 #define INIT7( name, cpu ) INIT7_NAME( name, name, cpu )
687 #define INIT_ADS( cpu ) \
688 pixf->ads[PIXEL_16x16] = x264_pixel_ads4##cpu;\
689 pixf->ads[PIXEL_16x8] = x264_pixel_ads2##cpu;\
690 pixf->ads[PIXEL_8x8] = x264_pixel_ads1##cpu;
693 INIT7_NAME( sad_aligned, sad, );
700 INIT4( hadamard_ac, );
703 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16;
704 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8;
705 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16;
706 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8;
708 pixf->ssd_nv12_core = pixel_ssd_nv12_core;
709 pixf->ssim_4x4x2_core = ssim_4x4x2_core;
710 pixf->ssim_end4 = ssim_end4;
711 pixf->var2_8x8 = pixel_var2_8x8;
713 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4;
714 pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4;
715 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8;
716 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8;
717 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c;
718 pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c;
719 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16;
720 pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16;
722 #if !X264_HIGH_BIT_DEPTH
724 if( cpu&X264_CPU_MMX )
729 if( cpu&X264_CPU_MMXEXT )
731 INIT7( sad, _mmxext );
732 INIT7_NAME( sad_aligned, sad, _mmxext );
733 INIT7( sad_x3, _mmxext );
734 INIT7( sad_x4, _mmxext );
735 INIT7( satd, _mmxext );
736 INIT7( satd_x3, _mmxext );
737 INIT7( satd_x4, _mmxext );
738 INIT4( hadamard_ac, _mmxext );
740 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_mmxext;
741 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_mmxext;
742 pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_mmxext;
744 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_mmxext;
745 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_mmxext;
746 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_mmxext;
747 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_mmxext;
748 pixf->var2_8x8 = x264_pixel_var2_8x8_mmxext;
750 if( cpu&X264_CPU_CACHELINE_32 )
752 INIT5( sad, _cache32_mmxext );
753 INIT4( sad_x3, _cache32_mmxext );
754 INIT4( sad_x4, _cache32_mmxext );
756 else if( cpu&X264_CPU_CACHELINE_64 )
758 INIT5( sad, _cache64_mmxext );
759 INIT4( sad_x3, _cache64_mmxext );
760 INIT4( sad_x4, _cache64_mmxext );
763 if( cpu&X264_CPU_CACHELINE_64 )
765 pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_cache64_mmxext;
766 pixf->sad[PIXEL_8x8] = x264_pixel_sad_8x8_cache64_mmxext;
767 pixf->sad[PIXEL_8x4] = x264_pixel_sad_8x4_cache64_mmxext;
768 pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_mmxext;
769 pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_cache64_mmxext;
770 pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_mmxext;
771 pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_cache64_mmxext;
774 pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_mmxext;
775 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_mmxext;
776 pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c_mmxext;
777 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_mmxext;
778 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_mmxext;
779 pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4_mmxext;
780 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_mmxext;
783 if( cpu&X264_CPU_SSE2 )
785 INIT5( ssd, _sse2slow );
786 INIT2_NAME( sad_aligned, sad, _sse2_aligned );
787 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_sse2;
788 pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_sse2;
789 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_sse2;
790 pixf->ssim_end4 = x264_pixel_ssim_end4_sse2;
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->var2_8x8 = x264_pixel_var2_8x8_sse2;
799 if( (cpu&X264_CPU_SSE2) && !(cpu&X264_CPU_SSE2_IS_SLOW) )
802 INIT2( sad_x3, _sse2 );
803 INIT2( sad_x4, _sse2 );
804 INIT6( satd, _sse2 );
805 INIT6( satd_x3, _sse2 );
806 INIT6( satd_x4, _sse2 );
807 if( !(cpu&X264_CPU_STACK_MOD4) )
809 INIT4( hadamard_ac, _sse2 );
812 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_sse2;
813 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_sse2;
814 if( cpu&X264_CPU_CACHELINE_64 )
816 INIT2( ssd, _sse2); /* faster for width 16 on p4 */
818 INIT2( sad, _cache64_sse2 );
819 INIT2( sad_x3, _cache64_sse2 );
820 INIT2( sad_x4, _cache64_sse2 );
822 if( cpu&X264_CPU_SSE2_IS_FAST )
824 pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_sse2;
825 pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_sse2;
829 if( cpu&X264_CPU_SSE_MISALIGN )
831 INIT2( sad_x3, _sse2_misalign );
832 INIT2( sad_x4, _sse2_misalign );
836 if( cpu&X264_CPU_SSE2_IS_FAST && !(cpu&X264_CPU_CACHELINE_64) )
838 pixf->sad_aligned[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
839 pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
840 pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_sse2;
841 pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_sse2;
842 pixf->sad_x3[PIXEL_8x4] = x264_pixel_sad_x3_8x4_sse2;
843 pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_sse2;
844 pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_sse2;
845 pixf->sad_x4[PIXEL_8x4] = x264_pixel_sad_x4_8x4_sse2;
848 if( (cpu&X264_CPU_SSE3) && (cpu&X264_CPU_CACHELINE_64) )
851 INIT2( sad_x3, _sse3 );
852 INIT2( sad_x4, _sse3 );
855 if( cpu&X264_CPU_SSSE3 )
857 if( !(cpu&X264_CPU_STACK_MOD4) )
859 INIT4( hadamard_ac, _ssse3 );
862 if( !(cpu&X264_CPU_SLOW_ATOM) )
864 INIT7( ssd, _ssse3 );
865 pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_ssse3;
866 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_ssse3;
867 INIT7( satd, _ssse3 );
868 INIT7( satd_x3, _ssse3 );
869 INIT7( satd_x4, _ssse3 );
871 pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_ssse3;
872 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_ssse3;
873 pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c_ssse3;
874 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_ssse3;
875 pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4_ssse3;
877 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_ssse3;
879 pixf->var2_8x8 = x264_pixel_var2_8x8_ssse3;
880 if( cpu&X264_CPU_CACHELINE_64 )
882 INIT2( sad, _cache64_ssse3 );
883 INIT2( sad_x3, _cache64_ssse3 );
884 INIT2( sad_x4, _cache64_ssse3 );
886 if( cpu&X264_CPU_SLOW_ATOM || !(cpu&X264_CPU_SHUFFLE_IS_FAST) )
888 INIT5( ssd, _sse2 ); /* on conroe, sse2 is faster for width8/16 */
892 if( cpu&X264_CPU_SSE4 )
894 INIT7( satd, _sse4 );
895 INIT7( satd_x3, _sse4 );
896 INIT7( satd_x4, _sse4 );
897 if( !(cpu&X264_CPU_STACK_MOD4) )
899 INIT4( hadamard_ac, _sse4 );
901 pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_sse4;
902 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_sse4;
903 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_sse4;
904 /* Slower on Conroe, so only enable under SSE4 */
905 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_ssse3;
910 if( cpu&X264_CPU_ARMV6 )
912 pixf->sad[PIXEL_4x8] = x264_pixel_sad_4x8_armv6;
913 pixf->sad[PIXEL_4x4] = x264_pixel_sad_4x4_armv6;
914 pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_4x8_armv6;
915 pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_4x4_armv6;
917 if( cpu&X264_CPU_NEON )
920 INIT5( sad_aligned, _neon );
921 INIT7( sad_x3, _neon );
922 INIT7( sad_x4, _neon );
924 INIT7( satd, _neon );
925 INIT7( satd_x3, _neon );
926 INIT7( satd_x4, _neon );
927 INIT4( hadamard_ac, _neon );
928 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_neon;
929 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_neon;
930 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_neon;
931 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_neon;
932 pixf->var2_8x8 = x264_pixel_var2_8x8_neon;
934 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_neon;
935 pixf->ssim_end4 = x264_pixel_ssim_end4_neon;
937 if( cpu&X264_CPU_FAST_NEON_MRC )
939 pixf->sad[PIXEL_4x8] = x264_pixel_sad_4x8_neon;
940 pixf->sad[PIXEL_4x4] = x264_pixel_sad_4x4_neon;
941 pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_aligned_4x8_neon;
942 pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_aligned_4x4_neon;
944 else // really just scheduled for dual issue / A8
946 INIT5( sad_aligned, _neon_dual );
950 #endif // !X264_HIGH_BIT_DEPTH
952 if( cpu&X264_CPU_ALTIVEC )
954 x264_pixel_altivec_init( pixf );
957 #if !X264_HIGH_BIT_DEPTH
960 INIT4( sad_x3, _vis );
961 INIT4( sad_x4, _vis );
963 #endif // !X264_HIGH_BIT_DEPTH
965 pixf->ads[PIXEL_8x16] =
966 pixf->ads[PIXEL_8x4] =
967 pixf->ads[PIXEL_4x8] = pixf->ads[PIXEL_16x8];
968 pixf->ads[PIXEL_4x4] = pixf->ads[PIXEL_8x8];