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 uint64_t pixel_ssd_nv12_core( pixel *pixuv1, int stride1, pixel *pixuv2, int stride2, int width, int height )
145 uint32_t 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];
154 return ssd_u + ((uint64_t)ssd_v<<32);
157 // SSD in uint32 (i.e. packing two into uint64) can potentially overflow on
158 // image widths >= 11008 (or 6604 if interlaced), since this is called on blocks
159 // of height up to 12 (resp 20). Though it will probably take significantly more
160 // than that at sane distortion levels.
161 uint64_t 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 )
163 uint64_t ssd = pf->ssd_nv12_core( pix1, i_pix1, pix2, i_pix2, i_width&~7, i_height );
165 ssd += pixel_ssd_nv12_core( pix1+(i_width&~7), i_pix1, pix2+(i_width&~7), i_pix2, i_width&7, i_height );
169 /****************************************************************************
171 ****************************************************************************/
172 #define PIXEL_VAR_C( name, w ) \
173 static uint64_t name( pixel *pix, int i_stride ) \
175 uint32_t sum = 0, sqr = 0; \
176 for( int y = 0; y < w; y++ ) \
178 for( int x = 0; x < w; x++ ) \
181 sqr += pix[x] * pix[x]; \
185 return sum + ((uint64_t)sqr << 32); \
188 PIXEL_VAR_C( x264_pixel_var_16x16, 16 )
189 PIXEL_VAR_C( x264_pixel_var_8x8, 8 )
191 /****************************************************************************
193 ****************************************************************************/
194 static int pixel_var2_8x8( pixel *pix1, int i_stride1, pixel *pix2, int i_stride2, int *ssd )
196 uint32_t var = 0, sum = 0, sqr = 0;
197 for( int y = 0; y < 8; y++ )
199 for( int x = 0; x < 8; x++ )
201 int diff = pix1[x] - pix2[x];
209 var = sqr - ((uint64_t)sum * sum >> 6);
215 #define HADAMARD4(d0, d1, d2, d3, s0, s1, s2, s3) {\
226 // in: a pseudo-simd number of the form x+(y<<16)
227 // return: abs(x)+(abs(y)<<16)
228 static ALWAYS_INLINE uint32_t abs2( uint32_t a )
230 uint32_t s = ((a>>15)&0x10001)*0xffff;
234 /****************************************************************************
235 * pixel_satd_WxH: sum of 4x4 Hadamard transformed differences
236 ****************************************************************************/
238 static NOINLINE int x264_pixel_satd_4x4( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
241 uint32_t a0, a1, a2, a3, b0, b1;
243 for( int i = 0; i < 4; i++, pix1 += i_pix1, pix2 += i_pix2 )
245 a0 = pix1[0] - pix2[0];
246 a1 = pix1[1] - pix2[1];
247 b0 = (a0+a1) + ((a0-a1)<<16);
248 a2 = pix1[2] - pix2[2];
249 a3 = pix1[3] - pix2[3];
250 b1 = (a2+a3) + ((a2-a3)<<16);
254 for( int i = 0; i < 2; i++ )
256 HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
257 a0 = abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
258 sum += ((uint16_t)a0) + (a0>>16);
263 static NOINLINE int x264_pixel_satd_8x4( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
266 uint32_t a0, a1, a2, a3;
268 for( int i = 0; i < 4; i++, pix1 += i_pix1, pix2 += i_pix2 )
270 a0 = (pix1[0] - pix2[0]) + ((pix1[4] - pix2[4]) << 16);
271 a1 = (pix1[1] - pix2[1]) + ((pix1[5] - pix2[5]) << 16);
272 a2 = (pix1[2] - pix2[2]) + ((pix1[6] - pix2[6]) << 16);
273 a3 = (pix1[3] - pix2[3]) + ((pix1[7] - pix2[7]) << 16);
274 HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], a0,a1,a2,a3 );
276 for( int i = 0; i < 4; i++ )
278 HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
279 sum += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
281 return (((uint16_t)sum) + ((uint32_t)sum>>16)) >> 1;
284 #define PIXEL_SATD_C( w, h, sub )\
285 static int x264_pixel_satd_##w##x##h( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )\
287 int sum = sub( pix1, i_pix1, pix2, i_pix2 )\
288 + sub( pix1+4*i_pix1, i_pix1, pix2+4*i_pix2, i_pix2 );\
290 sum+= sub( pix1+8, i_pix1, pix2+8, i_pix2 )\
291 + sub( pix1+8+4*i_pix1, i_pix1, pix2+8+4*i_pix2, i_pix2 );\
293 sum+= sub( pix1+8*i_pix1, i_pix1, pix2+8*i_pix2, i_pix2 )\
294 + sub( pix1+12*i_pix1, i_pix1, pix2+12*i_pix2, i_pix2 );\
295 if( w==16 && h==16 )\
296 sum+= sub( pix1+8+8*i_pix1, i_pix1, pix2+8+8*i_pix2, i_pix2 )\
297 + sub( pix1+8+12*i_pix1, i_pix1, pix2+8+12*i_pix2, i_pix2 );\
300 PIXEL_SATD_C( 16, 16, x264_pixel_satd_8x4 )
301 PIXEL_SATD_C( 16, 8, x264_pixel_satd_8x4 )
302 PIXEL_SATD_C( 8, 16, x264_pixel_satd_8x4 )
303 PIXEL_SATD_C( 8, 8, x264_pixel_satd_8x4 )
304 PIXEL_SATD_C( 4, 8, x264_pixel_satd_4x4 )
307 static NOINLINE int sa8d_8x8( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
310 uint32_t a0, a1, a2, a3, a4, a5, a6, a7, b0, b1, b2, b3;
312 for( int i = 0; i < 8; i++, pix1 += i_pix1, pix2 += i_pix2 )
314 a0 = pix1[0] - pix2[0];
315 a1 = pix1[1] - pix2[1];
316 b0 = (a0+a1) + ((a0-a1)<<16);
317 a2 = pix1[2] - pix2[2];
318 a3 = pix1[3] - pix2[3];
319 b1 = (a2+a3) + ((a2-a3)<<16);
320 a4 = pix1[4] - pix2[4];
321 a5 = pix1[5] - pix2[5];
322 b2 = (a4+a5) + ((a4-a5)<<16);
323 a6 = pix1[6] - pix2[6];
324 a7 = pix1[7] - pix2[7];
325 b3 = (a6+a7) + ((a6-a7)<<16);
326 HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], b0,b1,b2,b3 );
328 for( int i = 0; i < 4; i++ )
330 HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
331 HADAMARD4( a4, a5, a6, a7, tmp[4][i], tmp[5][i], tmp[6][i], tmp[7][i] );
332 b0 = abs2(a0+a4) + abs2(a0-a4);
333 b0 += abs2(a1+a5) + abs2(a1-a5);
334 b0 += abs2(a2+a6) + abs2(a2-a6);
335 b0 += abs2(a3+a7) + abs2(a3-a7);
336 sum += (uint16_t)b0 + (b0>>16);
341 static int x264_pixel_sa8d_8x8( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
343 int sum = sa8d_8x8( pix1, i_pix1, pix2, i_pix2 );
347 static int x264_pixel_sa8d_16x16( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
349 int sum = sa8d_8x8( pix1, i_pix1, pix2, i_pix2 )
350 + sa8d_8x8( pix1+8, i_pix1, pix2+8, i_pix2 )
351 + sa8d_8x8( pix1+8*i_pix1, i_pix1, pix2+8*i_pix2, i_pix2 )
352 + sa8d_8x8( pix1+8+8*i_pix1, i_pix1, pix2+8+8*i_pix2, i_pix2 );
357 static NOINLINE uint64_t pixel_hadamard_ac( pixel *pix, int stride )
360 uint32_t a0, a1, a2, a3, dc;
361 int sum4 = 0, sum8 = 0;
362 for( int i = 0; i < 8; i++, pix+=stride )
364 uint32_t *t = tmp + (i&3) + (i&4)*4;
365 a0 = (pix[0]+pix[1]) + ((pix[0]-pix[1])<<16);
366 a1 = (pix[2]+pix[3]) + ((pix[2]-pix[3])<<16);
369 a2 = (pix[4]+pix[5]) + ((pix[4]-pix[5])<<16);
370 a3 = (pix[6]+pix[7]) + ((pix[6]-pix[7])<<16);
374 for( int i = 0; i < 8; i++ )
376 HADAMARD4( a0, a1, a2, a3, tmp[i*4+0], tmp[i*4+1], tmp[i*4+2], tmp[i*4+3] );
381 sum4 += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
383 for( int i = 0; i < 8; i++ )
385 HADAMARD4( a0,a1,a2,a3, tmp[i], tmp[8+i], tmp[16+i], tmp[24+i] );
386 sum8 += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
388 dc = (uint16_t)(tmp[0] + tmp[8] + tmp[16] + tmp[24]);
389 sum4 = (uint16_t)sum4 + ((uint32_t)sum4>>16) - dc;
390 sum8 = (uint16_t)sum8 + ((uint32_t)sum8>>16) - dc;
391 return ((uint64_t)sum8<<32) + sum4;
394 #define HADAMARD_AC(w,h) \
395 static uint64_t x264_pixel_hadamard_ac_##w##x##h( pixel *pix, int stride )\
397 uint64_t sum = pixel_hadamard_ac( pix, stride );\
399 sum += pixel_hadamard_ac( pix+8, stride );\
401 sum += pixel_hadamard_ac( pix+8*stride, stride );\
402 if( w==16 && h==16 )\
403 sum += pixel_hadamard_ac( pix+8*stride+8, stride );\
404 return ((sum>>34)<<32) + ((uint32_t)sum>>1);\
406 HADAMARD_AC( 16, 16 )
412 /****************************************************************************
414 ****************************************************************************/
415 #define SAD_X( size ) \
416 static void x264_pixel_sad_x3_##size( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, int i_stride, int scores[3] )\
418 scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
419 scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
420 scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
422 static void x264_pixel_sad_x4_##size( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, pixel *pix3, int i_stride, int scores[4] )\
424 scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
425 scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
426 scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
427 scores[3] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix3, i_stride );\
438 #if !X264_HIGH_BIT_DEPTH
445 #endif // !X264_HIGH_BIT_DEPTH
447 /****************************************************************************
449 * no faster than single satd, but needed for satd to be a drop-in replacement for sad
450 ****************************************************************************/
452 #define SATD_X( size, cpu ) \
453 static void x264_pixel_satd_x3_##size##cpu( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, int i_stride, int scores[3] )\
455 scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
456 scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
457 scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
459 static void x264_pixel_satd_x4_##size##cpu( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, pixel *pix3, int i_stride, int scores[4] )\
461 scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
462 scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
463 scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
464 scores[3] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix3, i_stride );\
466 #define SATD_X_DECL6( cpu )\
467 SATD_X( 16x16, cpu )\
473 #define SATD_X_DECL7( cpu )\
478 #if !X264_HIGH_BIT_DEPTH
480 SATD_X_DECL7( _mmxext )
481 SATD_X_DECL6( _sse2 )
482 SATD_X_DECL7( _ssse3 )
483 SATD_X_DECL7( _sse4 )
487 SATD_X_DECL7( _neon )
489 #endif // !X264_HIGH_BIT_DEPTH
491 #define INTRA_MBCMP_8x8( mbcmp )\
492 void x264_intra_##mbcmp##_x3_8x8( pixel *fenc, pixel edge[33], int res[3] )\
494 pixel pix[8*FDEC_STRIDE];\
495 x264_predict_8x8_v_c( pix, edge );\
496 res[0] = x264_pixel_##mbcmp##_8x8( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
497 x264_predict_8x8_h_c( pix, edge );\
498 res[1] = x264_pixel_##mbcmp##_8x8( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
499 x264_predict_8x8_dc_c( pix, edge );\
500 res[2] = x264_pixel_##mbcmp##_8x8( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
504 INTRA_MBCMP_8x8(sa8d)
506 #define INTRA_MBCMP( mbcmp, size, pred1, pred2, pred3, chroma )\
507 void x264_intra_##mbcmp##_x3_##size##x##size##chroma( pixel *fenc, pixel *fdec, int res[3] )\
509 x264_predict_##size##x##size##chroma##_##pred1##_c( fdec );\
510 res[0] = x264_pixel_##mbcmp##_##size##x##size( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
511 x264_predict_##size##x##size##chroma##_##pred2##_c( fdec );\
512 res[1] = x264_pixel_##mbcmp##_##size##x##size( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
513 x264_predict_##size##x##size##chroma##_##pred3##_c( fdec );\
514 res[2] = x264_pixel_##mbcmp##_##size##x##size( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
517 INTRA_MBCMP(sad, 4, v, h, dc, )
518 INTRA_MBCMP(satd, 4, v, h, dc, )
519 INTRA_MBCMP(sad, 8, dc, h, v, c )
520 INTRA_MBCMP(satd, 8, dc, h, v, c )
521 INTRA_MBCMP(sad, 16, v, h, dc, )
522 INTRA_MBCMP(satd, 16, v, h, dc, )
524 /****************************************************************************
525 * structural similarity metric
526 ****************************************************************************/
527 static void ssim_4x4x2_core( const pixel *pix1, int stride1,
528 const pixel *pix2, int stride2,
531 for( int z = 0; z < 2; z++ )
533 uint32_t s1 = 0, s2 = 0, ss = 0, s12 = 0;
534 for( int y = 0; y < 4; y++ )
535 for( int x = 0; x < 4; x++ )
537 int a = pix1[x+y*stride1];
538 int b = pix2[x+y*stride2];
554 static float ssim_end1( int s1, int s2, int ss, int s12 )
556 static const int ssim_c1 = (int)(.01*.01*PIXEL_MAX*PIXEL_MAX*64 + .5);
557 static const int ssim_c2 = (int)(.03*.03*PIXEL_MAX*PIXEL_MAX*64*63 + .5);
558 int vars = ss*64 - s1*s1 - s2*s2;
559 int covar = s12*64 - s1*s2;
560 return (float)(2*s1*s2 + ssim_c1) * (float)(2*covar + ssim_c2)
561 / ((float)(s1*s1 + s2*s2 + ssim_c1) * (float)(vars + ssim_c2));
564 static float ssim_end4( int sum0[5][4], int sum1[5][4], int width )
567 for( int i = 0; i < width; i++ )
568 ssim += ssim_end1( sum0[i][0] + sum0[i+1][0] + sum1[i][0] + sum1[i+1][0],
569 sum0[i][1] + sum0[i+1][1] + sum1[i][1] + sum1[i+1][1],
570 sum0[i][2] + sum0[i+1][2] + sum1[i][2] + sum1[i+1][2],
571 sum0[i][3] + sum0[i+1][3] + sum1[i][3] + sum1[i+1][3] );
575 float x264_pixel_ssim_wxh( x264_pixel_function_t *pf,
576 pixel *pix1, int stride1,
577 pixel *pix2, int stride2,
578 int width, int height, void *buf )
582 int (*sum0)[4] = buf;
583 int (*sum1)[4] = sum0 + (width >> 2) + 3;
586 for( int y = 1; y < height; y++ )
590 XCHG( void*, sum0, sum1 );
591 for( int x = 0; x < width; x+=2 )
592 pf->ssim_4x4x2_core( &pix1[4*(x+z*stride1)], stride1, &pix2[4*(x+z*stride2)], stride2, &sum0[x] );
594 for( int x = 0; x < width-1; x += 4 )
595 ssim += pf->ssim_end4( sum0+x, sum1+x, X264_MIN(4,width-x-1) );
601 /****************************************************************************
602 * successive elimination
603 ****************************************************************************/
604 static int x264_pixel_ads4( int enc_dc[4], uint16_t *sums, int delta,
605 uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
608 for( int i = 0; i < width; i++, sums++ )
610 int ads = abs( enc_dc[0] - sums[0] )
611 + abs( enc_dc[1] - sums[8] )
612 + abs( enc_dc[2] - sums[delta] )
613 + abs( enc_dc[3] - sums[delta+8] )
621 static int x264_pixel_ads2( int enc_dc[2], uint16_t *sums, int delta,
622 uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
625 for( int i = 0; i < width; i++, sums++ )
627 int ads = abs( enc_dc[0] - sums[0] )
628 + abs( enc_dc[1] - sums[delta] )
636 static int x264_pixel_ads1( int enc_dc[1], uint16_t *sums, int delta,
637 uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
640 for( int i = 0; i<width; i++, sums++ )
642 int ads = abs( enc_dc[0] - sums[0] )
651 /****************************************************************************
653 ****************************************************************************/
654 void x264_pixel_init( int cpu, x264_pixel_function_t *pixf )
656 memset( pixf, 0, sizeof(*pixf) );
658 #define INIT2_NAME( name1, name2, cpu ) \
659 pixf->name1[PIXEL_16x16] = x264_pixel_##name2##_16x16##cpu;\
660 pixf->name1[PIXEL_16x8] = x264_pixel_##name2##_16x8##cpu;
661 #define INIT4_NAME( name1, name2, cpu ) \
662 INIT2_NAME( name1, name2, cpu ) \
663 pixf->name1[PIXEL_8x16] = x264_pixel_##name2##_8x16##cpu;\
664 pixf->name1[PIXEL_8x8] = x264_pixel_##name2##_8x8##cpu;
665 #define INIT5_NAME( name1, name2, cpu ) \
666 INIT4_NAME( name1, name2, cpu ) \
667 pixf->name1[PIXEL_8x4] = x264_pixel_##name2##_8x4##cpu;
668 #define INIT6_NAME( name1, name2, cpu ) \
669 INIT5_NAME( name1, name2, cpu ) \
670 pixf->name1[PIXEL_4x8] = x264_pixel_##name2##_4x8##cpu;
671 #define INIT7_NAME( name1, name2, cpu ) \
672 INIT6_NAME( name1, name2, cpu ) \
673 pixf->name1[PIXEL_4x4] = x264_pixel_##name2##_4x4##cpu;
674 #define INIT2( name, cpu ) INIT2_NAME( name, name, cpu )
675 #define INIT4( name, cpu ) INIT4_NAME( name, name, cpu )
676 #define INIT5( name, cpu ) INIT5_NAME( name, name, cpu )
677 #define INIT6( name, cpu ) INIT6_NAME( name, name, cpu )
678 #define INIT7( name, cpu ) INIT7_NAME( name, name, cpu )
680 #define INIT_ADS( cpu ) \
681 pixf->ads[PIXEL_16x16] = x264_pixel_ads4##cpu;\
682 pixf->ads[PIXEL_16x8] = x264_pixel_ads2##cpu;\
683 pixf->ads[PIXEL_8x8] = x264_pixel_ads1##cpu;
686 INIT7_NAME( sad_aligned, sad, );
693 INIT4( hadamard_ac, );
696 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16;
697 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8;
698 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16;
699 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8;
701 pixf->ssd_nv12_core = pixel_ssd_nv12_core;
702 pixf->ssim_4x4x2_core = ssim_4x4x2_core;
703 pixf->ssim_end4 = ssim_end4;
704 pixf->var2_8x8 = pixel_var2_8x8;
706 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4;
707 pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4;
708 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8;
709 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8;
710 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c;
711 pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c;
712 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16;
713 pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16;
715 #if !X264_HIGH_BIT_DEPTH
717 if( cpu&X264_CPU_MMX )
722 if( cpu&X264_CPU_MMXEXT )
724 INIT7( sad, _mmxext );
725 INIT7_NAME( sad_aligned, sad, _mmxext );
726 INIT7( sad_x3, _mmxext );
727 INIT7( sad_x4, _mmxext );
728 INIT7( satd, _mmxext );
729 INIT7( satd_x3, _mmxext );
730 INIT7( satd_x4, _mmxext );
731 INIT4( hadamard_ac, _mmxext );
733 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_mmxext;
734 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_mmxext;
735 pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_mmxext;
737 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_mmxext;
738 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_mmxext;
739 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_mmxext;
740 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_mmxext;
741 pixf->var2_8x8 = x264_pixel_var2_8x8_mmxext;
743 if( cpu&X264_CPU_CACHELINE_32 )
745 INIT5( sad, _cache32_mmxext );
746 INIT4( sad_x3, _cache32_mmxext );
747 INIT4( sad_x4, _cache32_mmxext );
749 else if( cpu&X264_CPU_CACHELINE_64 )
751 INIT5( sad, _cache64_mmxext );
752 INIT4( sad_x3, _cache64_mmxext );
753 INIT4( sad_x4, _cache64_mmxext );
756 if( cpu&X264_CPU_CACHELINE_64 )
758 pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_cache64_mmxext;
759 pixf->sad[PIXEL_8x8] = x264_pixel_sad_8x8_cache64_mmxext;
760 pixf->sad[PIXEL_8x4] = x264_pixel_sad_8x4_cache64_mmxext;
761 pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_mmxext;
762 pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_cache64_mmxext;
763 pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_mmxext;
764 pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_cache64_mmxext;
767 pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_mmxext;
768 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_mmxext;
769 pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c_mmxext;
770 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_mmxext;
771 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_mmxext;
772 pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4_mmxext;
773 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_mmxext;
776 if( cpu&X264_CPU_SSE2 )
778 INIT5( ssd, _sse2slow );
779 INIT2_NAME( sad_aligned, sad, _sse2_aligned );
780 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_sse2;
781 pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_sse2;
782 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_sse2;
783 pixf->ssim_end4 = x264_pixel_ssim_end4_sse2;
784 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_sse2;
785 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_sse2;
787 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_sse2;
789 pixf->var2_8x8 = x264_pixel_var2_8x8_sse2;
792 if( (cpu&X264_CPU_SSE2) && !(cpu&X264_CPU_SSE2_IS_SLOW) )
795 INIT2( sad_x3, _sse2 );
796 INIT2( sad_x4, _sse2 );
797 INIT6( satd, _sse2 );
798 INIT6( satd_x3, _sse2 );
799 INIT6( satd_x4, _sse2 );
800 if( !(cpu&X264_CPU_STACK_MOD4) )
802 INIT4( hadamard_ac, _sse2 );
805 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_sse2;
806 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_sse2;
807 if( cpu&X264_CPU_CACHELINE_64 )
809 INIT2( ssd, _sse2); /* faster for width 16 on p4 */
811 INIT2( sad, _cache64_sse2 );
812 INIT2( sad_x3, _cache64_sse2 );
813 INIT2( sad_x4, _cache64_sse2 );
815 if( cpu&X264_CPU_SSE2_IS_FAST )
817 pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_sse2;
818 pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_sse2;
822 if( cpu&X264_CPU_SSE_MISALIGN )
824 INIT2( sad_x3, _sse2_misalign );
825 INIT2( sad_x4, _sse2_misalign );
829 if( cpu&X264_CPU_SSE2_IS_FAST && !(cpu&X264_CPU_CACHELINE_64) )
831 pixf->sad_aligned[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
832 pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
833 pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_sse2;
834 pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_sse2;
835 pixf->sad_x3[PIXEL_8x4] = x264_pixel_sad_x3_8x4_sse2;
836 pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_sse2;
837 pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_sse2;
838 pixf->sad_x4[PIXEL_8x4] = x264_pixel_sad_x4_8x4_sse2;
841 if( (cpu&X264_CPU_SSE3) && (cpu&X264_CPU_CACHELINE_64) )
844 INIT2( sad_x3, _sse3 );
845 INIT2( sad_x4, _sse3 );
848 if( cpu&X264_CPU_SSSE3 )
850 if( !(cpu&X264_CPU_STACK_MOD4) )
852 INIT4( hadamard_ac, _ssse3 );
855 if( !(cpu&X264_CPU_SLOW_ATOM) )
857 INIT7( ssd, _ssse3 );
858 pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_ssse3;
859 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_ssse3;
860 INIT7( satd, _ssse3 );
861 INIT7( satd_x3, _ssse3 );
862 INIT7( satd_x4, _ssse3 );
864 pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_ssse3;
865 pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_ssse3;
866 pixf->intra_satd_x3_8x8c = x264_intra_satd_x3_8x8c_ssse3;
867 pixf->intra_sad_x3_8x8c = x264_intra_sad_x3_8x8c_ssse3;
868 pixf->intra_satd_x3_4x4 = x264_intra_satd_x3_4x4_ssse3;
870 pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_ssse3;
872 pixf->var2_8x8 = x264_pixel_var2_8x8_ssse3;
873 if( cpu&X264_CPU_CACHELINE_64 )
875 INIT2( sad, _cache64_ssse3 );
876 INIT2( sad_x3, _cache64_ssse3 );
877 INIT2( sad_x4, _cache64_ssse3 );
879 if( cpu&X264_CPU_SLOW_ATOM || !(cpu&X264_CPU_SHUFFLE_IS_FAST) )
881 INIT5( ssd, _sse2 ); /* on conroe, sse2 is faster for width8/16 */
885 if( cpu&X264_CPU_SSE4 )
887 INIT7( satd, _sse4 );
888 INIT7( satd_x3, _sse4 );
889 INIT7( satd_x4, _sse4 );
890 if( !(cpu&X264_CPU_STACK_MOD4) )
892 INIT4( hadamard_ac, _sse4 );
894 pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_sse4;
895 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_sse4;
896 pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_sse4;
897 /* Slower on Conroe, so only enable under SSE4 */
898 pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_ssse3;
903 if( cpu&X264_CPU_ARMV6 )
905 pixf->sad[PIXEL_4x8] = x264_pixel_sad_4x8_armv6;
906 pixf->sad[PIXEL_4x4] = x264_pixel_sad_4x4_armv6;
907 pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_4x8_armv6;
908 pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_4x4_armv6;
910 if( cpu&X264_CPU_NEON )
913 INIT5( sad_aligned, _neon );
914 INIT7( sad_x3, _neon );
915 INIT7( sad_x4, _neon );
917 INIT7( satd, _neon );
918 INIT7( satd_x3, _neon );
919 INIT7( satd_x4, _neon );
920 INIT4( hadamard_ac, _neon );
921 pixf->sa8d[PIXEL_8x8] = x264_pixel_sa8d_8x8_neon;
922 pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_neon;
923 pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_neon;
924 pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_neon;
925 pixf->var2_8x8 = x264_pixel_var2_8x8_neon;
927 pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_neon;
928 pixf->ssim_end4 = x264_pixel_ssim_end4_neon;
930 if( cpu&X264_CPU_FAST_NEON_MRC )
932 pixf->sad[PIXEL_4x8] = x264_pixel_sad_4x8_neon;
933 pixf->sad[PIXEL_4x4] = x264_pixel_sad_4x4_neon;
934 pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_aligned_4x8_neon;
935 pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_aligned_4x4_neon;
937 else // really just scheduled for dual issue / A8
939 INIT5( sad_aligned, _neon_dual );
943 #endif // !X264_HIGH_BIT_DEPTH
945 if( cpu&X264_CPU_ALTIVEC )
947 x264_pixel_altivec_init( pixf );
950 #if !X264_HIGH_BIT_DEPTH
953 INIT4( sad_x3, _vis );
954 INIT4( sad_x4, _vis );
956 #endif // !X264_HIGH_BIT_DEPTH
958 pixf->ads[PIXEL_8x16] =
959 pixf->ads[PIXEL_8x4] =
960 pixf->ads[PIXEL_4x8] = pixf->ads[PIXEL_16x8];
961 pixf->ads[PIXEL_4x4] = pixf->ads[PIXEL_8x8];