git.sesse.net Git - x264/blob - common/pixel.c

   1 /*****************************************************************************
   2  * pixel.c: pixel metrics
   3  *****************************************************************************
   4  * Copyright (C) 2003-2011 x264 project
   5  *
   6  * Authors: Loren Merritt <lorenm@u.washington.edu>
   7  *          Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Fiona Glaser <fiona@x264.com>
   9  *
  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.
  14  *
  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.
  19  *
  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.
  23  *
  24  * This program is also available under a commercial proprietary license.
  25  * For more information, contact us at licensing@x264.com.
  26  *****************************************************************************/
  27
  28 #include "common.h"
  29
  30 #if HAVE_MMX
  31 #   include "x86/pixel.h"
  32 #   include "x86/predict.h"
  33 #endif
  34 #if ARCH_PPC
  35 #   include "ppc/pixel.h"
  36 #endif
  37 #if ARCH_ARM
  38 #   include "arm/pixel.h"
  39 #endif
  40 #if ARCH_UltraSPARC
  41 #   include "sparc/pixel.h"
  42 #endif
  43
  44
  45 /****************************************************************************
  46  * pixel_sad_WxH
  47  ****************************************************************************/
  48 #define PIXEL_SAD_C( name, lx, ly ) \
  49 static int name( pixel *pix1, int i_stride_pix1,  \
  50                  pixel *pix2, int i_stride_pix2 ) \
  51 {                                                   \
  52     int i_sum = 0;                                  \
  53     for( int y = 0; y < ly; y++ )                   \
  54     {                                               \
  55         for( int x = 0; x < lx; x++ )               \
  56         {                                           \
  57             i_sum += abs( pix1[x] - pix2[x] );      \
  58         }                                           \
  59         pix1 += i_stride_pix1;                      \
  60         pix2 += i_stride_pix2;                      \
  61     }                                               \
  62     return i_sum;                                   \
  63 }
  64
  65
  66 PIXEL_SAD_C( x264_pixel_sad_16x16, 16, 16 )
  67 PIXEL_SAD_C( x264_pixel_sad_16x8,  16,  8 )
  68 PIXEL_SAD_C( x264_pixel_sad_8x16,   8, 16 )
  69 PIXEL_SAD_C( x264_pixel_sad_8x8,    8,  8 )
  70 PIXEL_SAD_C( x264_pixel_sad_8x4,    8,  4 )
  71 PIXEL_SAD_C( x264_pixel_sad_4x16,   4, 16 )
  72 PIXEL_SAD_C( x264_pixel_sad_4x8,    4,  8 )
  73 PIXEL_SAD_C( x264_pixel_sad_4x4,    4,  4 )
  74
  75 /****************************************************************************
  76  * pixel_ssd_WxH
  77  ****************************************************************************/
  78 #define PIXEL_SSD_C( name, lx, ly ) \
  79 static int name( pixel *pix1, int i_stride_pix1,  \
  80                  pixel *pix2, int i_stride_pix2 ) \
  81 {                                                   \
  82     int i_sum = 0;                                  \
  83     for( int y = 0; y < ly; y++ )                   \
  84     {                                               \
  85         for( int x = 0; x < lx; x++ )               \
  86         {                                           \
  87             int d = pix1[x] - pix2[x];              \
  88             i_sum += d*d;                           \
  89         }                                           \
  90         pix1 += i_stride_pix1;                      \
  91         pix2 += i_stride_pix2;                      \
  92     }                                               \
  93     return i_sum;                                   \
  94 }
  95
  96 PIXEL_SSD_C( x264_pixel_ssd_16x16, 16, 16 )
  97 PIXEL_SSD_C( x264_pixel_ssd_16x8,  16,  8 )
  98 PIXEL_SSD_C( x264_pixel_ssd_8x16,   8, 16 )
  99 PIXEL_SSD_C( x264_pixel_ssd_8x8,    8,  8 )
 100 PIXEL_SSD_C( x264_pixel_ssd_8x4,    8,  4 )
 101 PIXEL_SSD_C( x264_pixel_ssd_4x16,   4, 16 )
 102 PIXEL_SSD_C( x264_pixel_ssd_4x8,    4,  8 )
 103 PIXEL_SSD_C( x264_pixel_ssd_4x4,    4,  4 )
 104
 105 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 )
 106 {
 107     uint64_t i_ssd = 0;
 108     int y;
 109     int align = !(((intptr_t)pix1 | (intptr_t)pix2 | i_pix1 | i_pix2) & 15);
 110
 111 #define SSD(size) i_ssd += pf->ssd[size]( pix1 + y*i_pix1 + x, i_pix1, \
 112                                           pix2 + y*i_pix2 + x, i_pix2 );
 113     for( y = 0; y < i_height-15; y += 16 )
 114     {
 115         int x = 0;
 116         if( align )
 117             for( ; x < i_width-15; x += 16 )
 118                 SSD(PIXEL_16x16);
 119         for( ; x < i_width-7; x += 8 )
 120             SSD(PIXEL_8x16);
 121     }
 122     if( y < i_height-7 )
 123         for( int x = 0; x < i_width-7; x += 8 )
 124             SSD(PIXEL_8x8);
 125 #undef SSD
 126
 127 #define SSD1 { int d = pix1[y*i_pix1+x] - pix2[y*i_pix2+x]; i_ssd += d*d; }
 128     if( i_width & 7 )
 129     {
 130         for( y = 0; y < (i_height & ~7); y++ )
 131             for( int x = i_width & ~7; x < i_width; x++ )
 132                 SSD1;
 133     }
 134     if( i_height & 7 )
 135     {
 136         for( y = i_height & ~7; y < i_height; y++ )
 137             for( int x = 0; x < i_width; x++ )
 138                 SSD1;
 139     }
 140 #undef SSD1
 141
 142     return i_ssd;
 143 }
 144
 145 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 )
 146 {
 147     *ssd_u = 0, *ssd_v = 0;
 148     for( int y = 0; y < height; y++, pixuv1+=stride1, pixuv2+=stride2 )
 149         for( int x = 0; x < width; x++ )
 150         {
 151             int du = pixuv1[2*x]   - pixuv2[2*x];
 152             int dv = pixuv1[2*x+1] - pixuv2[2*x+1];
 153             *ssd_u += du*du;
 154             *ssd_v += dv*dv;
 155         }
 156 }
 157
 158 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 )
 159 {
 160     pf->ssd_nv12_core( pix1, i_pix1, pix2, i_pix2, i_width&~7, i_height, ssd_u, ssd_v );
 161     if( i_width&7 )
 162     {
 163         uint64_t tmp[2];
 164         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] );
 165         *ssd_u += tmp[0];
 166         *ssd_v += tmp[1];
 167     }
 168 }
 169
 170 /****************************************************************************
 171  * pixel_var_wxh
 172  ****************************************************************************/
 173 #define PIXEL_VAR_C( name, w, h ) \
 174 static uint64_t name( pixel *pix, int i_stride ) \
 175 {                                             \
 176     uint32_t sum = 0, sqr = 0;                \
 177     for( int y = 0; y < h; y++ )              \
 178     {                                         \
 179         for( int x = 0; x < w; x++ )          \
 180         {                                     \
 181             sum += pix[x];                    \
 182             sqr += pix[x] * pix[x];           \
 183         }                                     \
 184         pix += i_stride;                      \
 185     }                                         \
 186     return sum + ((uint64_t)sqr << 32);       \
 187 }
 188
 189 PIXEL_VAR_C( x264_pixel_var_16x16, 16, 16 )
 190 PIXEL_VAR_C( x264_pixel_var_8x16,   8, 16 )
 191 PIXEL_VAR_C( x264_pixel_var_8x8,    8,  8 )
 192
 193 /****************************************************************************
 194  * pixel_var2_wxh
 195  ****************************************************************************/
 196 #define PIXEL_VAR2_C( name, w, h, shift ) \
 197 static int name( pixel *pix1, int i_stride1, pixel *pix2, int i_stride2, int *ssd ) \
 198 { \
 199     uint32_t var = 0, sum = 0, sqr = 0; \
 200     for( int y = 0; y < h; y++ ) \
 201     { \
 202         for( int x = 0; x < w; x++ ) \
 203         { \
 204             int diff = pix1[x] - pix2[x]; \
 205             sum += diff; \
 206             sqr += diff * diff; \
 207         } \
 208         pix1 += i_stride1; \
 209         pix2 += i_stride2; \
 210     } \
 211     sum = abs(sum); \
 212     var = sqr - ((uint64_t)sum * sum >> shift); \
 213     *ssd = sqr; \
 214     return var; \
 215 }
 216
 217 PIXEL_VAR2_C( x264_pixel_var2_8x16, 8, 16, 7 )
 218 PIXEL_VAR2_C( x264_pixel_var2_8x8,  8,  8, 6 )
 219
 220 #if BIT_DEPTH > 8
 221     typedef uint32_t sum_t;
 222     typedef uint64_t sum2_t;
 223 #else
 224     typedef uint16_t sum_t;
 225     typedef uint32_t sum2_t;
 226 #endif
 227 #define BITS_PER_SUM (8 * sizeof(sum_t))
 228
 229 #define HADAMARD4(d0, d1, d2, d3, s0, s1, s2, s3) {\
 230     sum2_t t0 = s0 + s1;\
 231     sum2_t t1 = s0 - s1;\
 232     sum2_t t2 = s2 + s3;\
 233     sum2_t t3 = s2 - s3;\
 234     d0 = t0 + t2;\
 235     d2 = t0 - t2;\
 236     d1 = t1 + t3;\
 237     d3 = t1 - t3;\
 238 }
 239
 240 // in: a pseudo-simd number of the form x+(y<<16)
 241 // return: abs(x)+(abs(y)<<16)
 242 static ALWAYS_INLINE sum2_t abs2( sum2_t a )
 243 {
 244     sum2_t s = ((a>>(BITS_PER_SUM-1))&(((sum2_t)1<<BITS_PER_SUM)+1))*((sum_t)-1);
 245     return (a+s)^s;
 246 }
 247
 248 /****************************************************************************
 249  * pixel_satd_WxH: sum of 4x4 Hadamard transformed differences
 250  ****************************************************************************/
 251
 252 static NOINLINE int x264_pixel_satd_4x4( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
 253 {
 254     sum2_t tmp[4][2];
 255     sum2_t a0, a1, a2, a3, b0, b1;
 256     sum2_t sum = 0;
 257     for( int i = 0; i < 4; i++, pix1 += i_pix1, pix2 += i_pix2 )
 258     {
 259         a0 = pix1[0] - pix2[0];
 260         a1 = pix1[1] - pix2[1];
 261         b0 = (a0+a1) + ((a0-a1)<<BITS_PER_SUM);
 262         a2 = pix1[2] - pix2[2];
 263         a3 = pix1[3] - pix2[3];
 264         b1 = (a2+a3) + ((a2-a3)<<BITS_PER_SUM);
 265         tmp[i][0] = b0 + b1;
 266         tmp[i][1] = b0 - b1;
 267     }
 268     for( int i = 0; i < 2; i++ )
 269     {
 270         HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
 271         a0 = abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
 272         sum += ((sum_t)a0) + (a0>>BITS_PER_SUM);
 273     }
 274     return sum >> 1;
 275 }
 276
 277 static NOINLINE int x264_pixel_satd_8x4( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
 278 {
 279     sum2_t tmp[4][4];
 280     sum2_t a0, a1, a2, a3;
 281     sum2_t sum = 0;
 282     for( int i = 0; i < 4; i++, pix1 += i_pix1, pix2 += i_pix2 )
 283     {
 284         a0 = (pix1[0] - pix2[0]) + ((sum2_t)(pix1[4] - pix2[4]) << BITS_PER_SUM);
 285         a1 = (pix1[1] - pix2[1]) + ((sum2_t)(pix1[5] - pix2[5]) << BITS_PER_SUM);
 286         a2 = (pix1[2] - pix2[2]) + ((sum2_t)(pix1[6] - pix2[6]) << BITS_PER_SUM);
 287         a3 = (pix1[3] - pix2[3]) + ((sum2_t)(pix1[7] - pix2[7]) << BITS_PER_SUM);
 288         HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], a0,a1,a2,a3 );
 289     }
 290     for( int i = 0; i < 4; i++ )
 291     {
 292         HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
 293         sum += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
 294     }
 295     return (((sum_t)sum) + (sum>>BITS_PER_SUM)) >> 1;
 296 }
 297
 298 #define PIXEL_SATD_C( w, h, sub )\
 299 static int x264_pixel_satd_##w##x##h( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )\
 300 {\
 301     int sum = sub( pix1, i_pix1, pix2, i_pix2 )\
 302             + sub( pix1+4*i_pix1, i_pix1, pix2+4*i_pix2, i_pix2 );\
 303     if( w==16 )\
 304         sum+= sub( pix1+8, i_pix1, pix2+8, i_pix2 )\
 305             + sub( pix1+8+4*i_pix1, i_pix1, pix2+8+4*i_pix2, i_pix2 );\
 306     if( h==16 )\
 307         sum+= sub( pix1+8*i_pix1, i_pix1, pix2+8*i_pix2, i_pix2 )\
 308             + sub( pix1+12*i_pix1, i_pix1, pix2+12*i_pix2, i_pix2 );\
 309     if( w==16 && h==16 )\
 310         sum+= sub( pix1+8+8*i_pix1, i_pix1, pix2+8+8*i_pix2, i_pix2 )\
 311             + sub( pix1+8+12*i_pix1, i_pix1, pix2+8+12*i_pix2, i_pix2 );\
 312     return sum;\
 313 }
 314 PIXEL_SATD_C( 16, 16, x264_pixel_satd_8x4 )
 315 PIXEL_SATD_C( 16, 8,  x264_pixel_satd_8x4 )
 316 PIXEL_SATD_C( 8,  16, x264_pixel_satd_8x4 )
 317 PIXEL_SATD_C( 8,  8,  x264_pixel_satd_8x4 )
 318 PIXEL_SATD_C( 4,  16, x264_pixel_satd_4x4 )
 319 PIXEL_SATD_C( 4,  8,  x264_pixel_satd_4x4 )
 320
 321 static NOINLINE int sa8d_8x8( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
 322 {
 323     sum2_t tmp[8][4];
 324     sum2_t a0, a1, a2, a3, a4, a5, a6, a7, b0, b1, b2, b3;
 325     sum2_t sum = 0;
 326     for( int i = 0; i < 8; i++, pix1 += i_pix1, pix2 += i_pix2 )
 327     {
 328         a0 = pix1[0] - pix2[0];
 329         a1 = pix1[1] - pix2[1];
 330         b0 = (a0+a1) + ((a0-a1)<<BITS_PER_SUM);
 331         a2 = pix1[2] - pix2[2];
 332         a3 = pix1[3] - pix2[3];
 333         b1 = (a2+a3) + ((a2-a3)<<BITS_PER_SUM);
 334         a4 = pix1[4] - pix2[4];
 335         a5 = pix1[5] - pix2[5];
 336         b2 = (a4+a5) + ((a4-a5)<<BITS_PER_SUM);
 337         a6 = pix1[6] - pix2[6];
 338         a7 = pix1[7] - pix2[7];
 339         b3 = (a6+a7) + ((a6-a7)<<BITS_PER_SUM);
 340         HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], b0,b1,b2,b3 );
 341     }
 342     for( int i = 0; i < 4; i++ )
 343     {
 344         HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
 345         HADAMARD4( a4, a5, a6, a7, tmp[4][i], tmp[5][i], tmp[6][i], tmp[7][i] );
 346         b0  = abs2(a0+a4) + abs2(a0-a4);
 347         b0 += abs2(a1+a5) + abs2(a1-a5);
 348         b0 += abs2(a2+a6) + abs2(a2-a6);
 349         b0 += abs2(a3+a7) + abs2(a3-a7);
 350         sum += (sum_t)b0 + (b0>>BITS_PER_SUM);
 351     }
 352     return sum;
 353 }
 354
 355 static int x264_pixel_sa8d_8x8( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
 356 {
 357     int sum = sa8d_8x8( pix1, i_pix1, pix2, i_pix2 );
 358     return (sum+2)>>2;
 359 }
 360
 361 static int x264_pixel_sa8d_16x16( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
 362 {
 363     int sum = sa8d_8x8( pix1, i_pix1, pix2, i_pix2 )
 364             + sa8d_8x8( pix1+8, i_pix1, pix2+8, i_pix2 )
 365             + sa8d_8x8( pix1+8*i_pix1, i_pix1, pix2+8*i_pix2, i_pix2 )
 366             + sa8d_8x8( pix1+8+8*i_pix1, i_pix1, pix2+8+8*i_pix2, i_pix2 );
 367     return (sum+2)>>2;
 368 }
 369
 370
 371 static NOINLINE uint64_t pixel_hadamard_ac( pixel *pix, int stride )
 372 {
 373     sum2_t tmp[32];
 374     sum2_t a0, a1, a2, a3, dc;
 375     sum2_t sum4 = 0, sum8 = 0;
 376     for( int i = 0; i < 8; i++, pix+=stride )
 377     {
 378         sum2_t *t = tmp + (i&3) + (i&4)*4;
 379         a0 = (pix[0]+pix[1]) + ((sum2_t)(pix[0]-pix[1])<<BITS_PER_SUM);
 380         a1 = (pix[2]+pix[3]) + ((sum2_t)(pix[2]-pix[3])<<BITS_PER_SUM);
 381         t[0] = a0 + a1;
 382         t[4] = a0 - a1;
 383         a2 = (pix[4]+pix[5]) + ((sum2_t)(pix[4]-pix[5])<<BITS_PER_SUM);
 384         a3 = (pix[6]+pix[7]) + ((sum2_t)(pix[6]-pix[7])<<BITS_PER_SUM);
 385         t[8] = a2 + a3;
 386         t[12] = a2 - a3;
 387     }
 388     for( int i = 0; i < 8; i++ )
 389     {
 390         HADAMARD4( a0, a1, a2, a3, tmp[i*4+0], tmp[i*4+1], tmp[i*4+2], tmp[i*4+3] );
 391         tmp[i*4+0] = a0;
 392         tmp[i*4+1] = a1;
 393         tmp[i*4+2] = a2;
 394         tmp[i*4+3] = a3;
 395         sum4 += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
 396     }
 397     for( int i = 0; i < 8; i++ )
 398     {
 399         HADAMARD4( a0,a1,a2,a3, tmp[i], tmp[8+i], tmp[16+i], tmp[24+i] );
 400         sum8 += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
 401     }
 402     dc = (sum_t)(tmp[0] + tmp[8] + tmp[16] + tmp[24]);
 403     sum4 = (sum_t)sum4 + (sum4>>BITS_PER_SUM) - dc;
 404     sum8 = (sum_t)sum8 + (sum8>>BITS_PER_SUM) - dc;
 405     return ((uint64_t)sum8<<32) + sum4;
 406 }
 407
 408 #define HADAMARD_AC(w,h) \
 409 static uint64_t x264_pixel_hadamard_ac_##w##x##h( pixel *pix, int stride )\
 410 {\
 411     uint64_t sum = pixel_hadamard_ac( pix, stride );\
 412     if( w==16 )\
 413         sum += pixel_hadamard_ac( pix+8, stride );\
 414     if( h==16 )\
 415         sum += pixel_hadamard_ac( pix+8*stride, stride );\
 416     if( w==16 && h==16 )\
 417         sum += pixel_hadamard_ac( pix+8*stride+8, stride );\
 418     return ((sum>>34)<<32) + ((uint32_t)sum>>1);\
 419 }
 420 HADAMARD_AC( 16, 16 )
 421 HADAMARD_AC( 16, 8 )
 422 HADAMARD_AC( 8, 16 )
 423 HADAMARD_AC( 8, 8 )
 424
 425
 426 /****************************************************************************
 427  * pixel_sad_x4
 428  ****************************************************************************/
 429 #define SAD_X( size ) \
 430 static void x264_pixel_sad_x3_##size( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, int i_stride, int scores[3] )\
 431 {\
 432     scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
 433     scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
 434     scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
 435 }\
 436 static void x264_pixel_sad_x4_##size( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, pixel *pix3, int i_stride, int scores[4] )\
 437 {\
 438     scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
 439     scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
 440     scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
 441     scores[3] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix3, i_stride );\
 442 }
 443
 444 SAD_X( 16x16 )
 445 SAD_X( 16x8 )
 446 SAD_X( 8x16 )
 447 SAD_X( 8x8 )
 448 SAD_X( 8x4 )
 449 SAD_X( 4x8 )
 450 SAD_X( 4x4 )
 451
 452 #if !HIGH_BIT_DEPTH
 453 #if ARCH_UltraSPARC
 454 SAD_X( 16x16_vis )
 455 SAD_X( 16x8_vis )
 456 SAD_X( 8x16_vis )
 457 SAD_X( 8x8_vis )
 458 #endif
 459 #endif // !HIGH_BIT_DEPTH
 460
 461 /****************************************************************************
 462  * pixel_satd_x4
 463  * no faster than single satd, but needed for satd to be a drop-in replacement for sad
 464  ****************************************************************************/
 465
 466 #define SATD_X( size, cpu ) \
 467 static void x264_pixel_satd_x3_##size##cpu( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, int i_stride, int scores[3] )\
 468 {\
 469     scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
 470     scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
 471     scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
 472 }\
 473 static void x264_pixel_satd_x4_##size##cpu( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, pixel *pix3, int i_stride, int scores[4] )\
 474 {\
 475     scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
 476     scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
 477     scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
 478     scores[3] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix3, i_stride );\
 479 }
 480 #define SATD_X_DECL6( cpu )\
 481 SATD_X( 16x16, cpu )\
 482 SATD_X( 16x8, cpu )\
 483 SATD_X( 8x16, cpu )\
 484 SATD_X( 8x8, cpu )\
 485 SATD_X( 8x4, cpu )\
 486 SATD_X( 4x8, cpu )
 487 #define SATD_X_DECL7( cpu )\
 488 SATD_X_DECL6( cpu )\
 489 SATD_X( 4x4, cpu )
 490
 491 SATD_X_DECL7()
 492 #if HAVE_MMX
 493 SATD_X_DECL7( _mmx2 )
 494 #if !HIGH_BIT_DEPTH
 495 SATD_X_DECL6( _sse2 )
 496 SATD_X_DECL7( _ssse3 )
 497 SATD_X_DECL7( _sse4 )
 498 SATD_X_DECL7( _avx )
 499 SATD_X_DECL7( _xop )
 500 #endif // !HIGH_BIT_DEPTH
 501 #endif
 502
 503 #if !HIGH_BIT_DEPTH
 504 #if HAVE_ARMV6
 505 SATD_X_DECL7( _neon )
 506 #endif
 507 #endif // !HIGH_BIT_DEPTH
 508
 509 #define INTRA_MBCMP_8x8( mbcmp, cpu, cpu2 )\
 510 void x264_intra_##mbcmp##_x3_8x8##cpu( pixel *fenc, pixel edge[36], int res[3] )\
 511 {\
 512     ALIGNED_ARRAY_16( pixel, pix, [8*FDEC_STRIDE] );\
 513     x264_predict_8x8_v##cpu2( pix, edge );\
 514     res[0] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
 515     x264_predict_8x8_h##cpu2( pix, edge );\
 516     res[1] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
 517     x264_predict_8x8_dc##cpu2( pix, edge );\
 518     res[2] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
 519 }
 520
 521 INTRA_MBCMP_8x8( sad,, _c )
 522 INTRA_MBCMP_8x8(sa8d,, _c )
 523 #if HIGH_BIT_DEPTH && HAVE_MMX
 524 INTRA_MBCMP_8x8( sad, _mmx2,  _c )
 525 INTRA_MBCMP_8x8(sa8d, _sse2,  _sse2 )
 526 #endif
 527
 528 #define INTRA_MBCMP( mbcmp, size, pred1, pred2, pred3, chroma, cpu, cpu2 )\
 529 void x264_intra_##mbcmp##_x3_##size##chroma##cpu( pixel *fenc, pixel *fdec, int res[3] )\
 530 {\
 531     x264_predict_##size##chroma##_##pred1##cpu2( fdec );\
 532     res[0] = x264_pixel_##mbcmp##_##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
 533     x264_predict_##size##chroma##_##pred2##cpu2( fdec );\
 534     res[1] = x264_pixel_##mbcmp##_##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
 535     x264_predict_##size##chroma##_##pred3##cpu2( fdec );\
 536     res[2] = x264_pixel_##mbcmp##_##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
 537 }
 538
 539 INTRA_MBCMP( sad,  4x4,   v, h, dc,  ,, _c )
 540 INTRA_MBCMP(satd,  4x4,   v, h, dc,  ,, _c )
 541 INTRA_MBCMP( sad,  8x8,  dc, h,  v, c,, _c )
 542 INTRA_MBCMP(satd,  8x8,  dc, h,  v, c,, _c )
 543 INTRA_MBCMP( sad,  8x16, dc, h,  v, c,, _c )
 544 INTRA_MBCMP(satd,  8x16, dc, h,  v, c,, _c )
 545 INTRA_MBCMP( sad, 16x16,  v, h, dc,  ,, _c )
 546 INTRA_MBCMP(satd, 16x16,  v, h, dc,  ,, _c )
 547
 548 #if HAVE_MMX
 549 #if HIGH_BIT_DEPTH
 550 INTRA_MBCMP( sad,  4x4,   v, h, dc,  , _mmx2, _c )
 551 INTRA_MBCMP( sad,  8x8,  dc, h,  v, c, _mmx2, _c )
 552 INTRA_MBCMP( sad, 16x16,  v, h, dc,  , _mmx2, _mmx2 )
 553 INTRA_MBCMP( sad,  8x8,  dc, h,  v, c, _sse2, _sse2 )
 554 INTRA_MBCMP( sad, 16x16,  v, h, dc,  , _sse2, _sse2 )
 555 INTRA_MBCMP( sad,  4x4,   v, h, dc,  , _ssse3, _c )
 556 INTRA_MBCMP( sad,  8x8,  dc, h,  v, c, _ssse3, _sse2 )
 557 INTRA_MBCMP( sad, 16x16,  v, h, dc,  , _ssse3, _sse2 )
 558 #else
 559 #define x264_predict_8x16c_v_mmx2 x264_predict_8x16c_v_mmx
 560 INTRA_MBCMP( sad,  8x16, dc, h,  v, c, _mmx2, _mmx2 )
 561 INTRA_MBCMP(satd,  8x16, dc, h,  v, c, _mmx2, _mmx2 )
 562 INTRA_MBCMP( sad,  8x16, dc, h,  v, c, _sse2, _mmx2 )
 563 INTRA_MBCMP(satd,  8x16, dc, h,  v, c, _sse2, _mmx2 )
 564 INTRA_MBCMP(satd,  8x16, dc, h,  v, c, _ssse3, _mmx2 )
 565 INTRA_MBCMP(satd,  8x16, dc, h,  v, c, _sse4, _mmx2 )
 566 INTRA_MBCMP(satd,  8x16, dc, h,  v, c, _avx, _mmx2 )
 567 INTRA_MBCMP(satd,  8x16, dc, h,  v, c, _xop, _mmx2 )
 568 #endif
 569 #endif
 570
 571 // No C implementation of intra_satd_x9. See checkasm for its behavior,
 572 // or see x264_mb_analyse_intra for the entirely different algorithm we
 573 // use when lacking an asm implementation of it.
 574
 575
 576
 577 /****************************************************************************
 578  * structural similarity metric
 579  ****************************************************************************/
 580 static void ssim_4x4x2_core( const pixel *pix1, int stride1,
 581                              const pixel *pix2, int stride2,
 582                              int sums[2][4])
 583 {
 584     for( int z = 0; z < 2; z++ )
 585     {
 586         uint32_t s1 = 0, s2 = 0, ss = 0, s12 = 0;
 587         for( int y = 0; y < 4; y++ )
 588             for( int x = 0; x < 4; x++ )
 589             {
 590                 int a = pix1[x+y*stride1];
 591                 int b = pix2[x+y*stride2];
 592                 s1  += a;
 593                 s2  += b;
 594                 ss  += a*a;
 595                 ss  += b*b;
 596                 s12 += a*b;
 597             }
 598         sums[z][0] = s1;
 599         sums[z][1] = s2;
 600         sums[z][2] = ss;
 601         sums[z][3] = s12;
 602         pix1 += 4;
 603         pix2 += 4;
 604     }
 605 }
 606
 607 static float ssim_end1( int s1, int s2, int ss, int s12 )
 608 {
 609 /* Maximum value for 10-bit is: ss*64 = (2^10-1)^2*16*4*64 = 4286582784, which will overflow in some cases.
 610  * s1*s1, s2*s2, and s1*s2 also obtain this value for edge cases: ((2^10-1)*16*4)^2 = 4286582784.
 611  * Maximum value for 9-bit is: ss*64 = (2^9-1)^2*16*4*64 = 1069551616, which will not overflow. */
 612 #if BIT_DEPTH > 9
 613 #define type float
 614     static const float ssim_c1 = .01*.01*PIXEL_MAX*PIXEL_MAX*64;
 615     static const float ssim_c2 = .03*.03*PIXEL_MAX*PIXEL_MAX*64*63;
 616 #else
 617 #define type int
 618     static const int ssim_c1 = (int)(.01*.01*PIXEL_MAX*PIXEL_MAX*64 + .5);
 619     static const int ssim_c2 = (int)(.03*.03*PIXEL_MAX*PIXEL_MAX*64*63 + .5);
 620 #endif
 621     type fs1 = s1;
 622     type fs2 = s2;
 623     type fss = ss;
 624     type fs12 = s12;
 625     type vars = fss*64 - fs1*fs1 - fs2*fs2;
 626     type covar = fs12*64 - fs1*fs2;
 627     return (float)(2*fs1*fs2 + ssim_c1) * (float)(2*covar + ssim_c2)
 628          / ((float)(fs1*fs1 + fs2*fs2 + ssim_c1) * (float)(vars + ssim_c2));
 629 #undef type
 630 }
 631
 632 static float ssim_end4( int sum0[5][4], int sum1[5][4], int width )
 633 {
 634     float ssim = 0.0;
 635     for( int i = 0; i < width; i++ )
 636         ssim += ssim_end1( sum0[i][0] + sum0[i+1][0] + sum1[i][0] + sum1[i+1][0],
 637                            sum0[i][1] + sum0[i+1][1] + sum1[i][1] + sum1[i+1][1],
 638                            sum0[i][2] + sum0[i+1][2] + sum1[i][2] + sum1[i+1][2],
 639                            sum0[i][3] + sum0[i+1][3] + sum1[i][3] + sum1[i+1][3] );
 640     return ssim;
 641 }
 642
 643 float x264_pixel_ssim_wxh( x264_pixel_function_t *pf,
 644                            pixel *pix1, int stride1,
 645                            pixel *pix2, int stride2,
 646                            int width, int height, void *buf, int *cnt )
 647 {
 648     int z = 0;
 649     float ssim = 0.0;
 650     int (*sum0)[4] = buf;
 651     int (*sum1)[4] = sum0 + (width >> 2) + 3;
 652     width >>= 2;
 653     height >>= 2;
 654     for( int y = 1; y < height; y++ )
 655     {
 656         for( ; z <= y; z++ )
 657         {
 658             XCHG( void*, sum0, sum1 );
 659             for( int x = 0; x < width; x+=2 )
 660                 pf->ssim_4x4x2_core( &pix1[4*(x+z*stride1)], stride1, &pix2[4*(x+z*stride2)], stride2, &sum0[x] );
 661         }
 662         for( int x = 0; x < width-1; x += 4 )
 663             ssim += pf->ssim_end4( sum0+x, sum1+x, X264_MIN(4,width-x-1) );
 664     }
 665     *cnt = (height-1) * (width-1);
 666     return ssim;
 667 }
 668
 669 static int pixel_vsad( pixel *src, int stride, int height )
 670 {
 671     int score = 0;
 672     for( int i = 1; i < height; i++, src += stride )
 673         for( int j = 0; j < 16; j++ )
 674             score += abs(src[j] - src[j+stride]);
 675     return score;
 676 }
 677
 678 int x264_field_vsad( x264_t *h, int mb_x, int mb_y )
 679 {
 680     int score_field, score_frame;
 681     int stride = h->fenc->i_stride[0];
 682     int mb_stride = h->mb.i_mb_stride;
 683     pixel *fenc = h->fenc->plane[0] + 16 * (mb_x + mb_y * stride);
 684     int mb_xy = mb_x + mb_y*mb_stride;
 685
 686     /* We don't want to analyze pixels outside the frame, as it gives inaccurate results. */
 687     int mbpair_height = X264_MIN( h->param.i_height - mb_y * 16, 32 );
 688     score_frame  = h->pixf.vsad( fenc,          stride, mbpair_height );
 689     score_field  = h->pixf.vsad( fenc,        stride*2, mbpair_height >> 1 );
 690     score_field += h->pixf.vsad( fenc+stride, stride*2, mbpair_height >> 1 );
 691
 692     if( mb_x > 0 )
 693         score_field += 512 - h->mb.field[mb_xy        -1]*1024;
 694     if( mb_y > 0 )
 695         score_field += 512 - h->mb.field[mb_xy-mb_stride]*1024;
 696
 697     return (score_field < score_frame);
 698 }
 699
 700 /****************************************************************************
 701  * successive elimination
 702  ****************************************************************************/
 703 static int x264_pixel_ads4( int enc_dc[4], uint16_t *sums, int delta,
 704                             uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
 705 {
 706     int nmv = 0;
 707     for( int i = 0; i < width; i++, sums++ )
 708     {
 709         int ads = abs( enc_dc[0] - sums[0] )
 710                 + abs( enc_dc[1] - sums[8] )
 711                 + abs( enc_dc[2] - sums[delta] )
 712                 + abs( enc_dc[3] - sums[delta+8] )
 713                 + cost_mvx[i];
 714         if( ads < thresh )
 715             mvs[nmv++] = i;
 716     }
 717     return nmv;
 718 }
 719
 720 static int x264_pixel_ads2( int enc_dc[2], uint16_t *sums, int delta,
 721                             uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
 722 {
 723     int nmv = 0;
 724     for( int i = 0; i < width; i++, sums++ )
 725     {
 726         int ads = abs( enc_dc[0] - sums[0] )
 727                 + abs( enc_dc[1] - sums[delta] )
 728                 + cost_mvx[i];
 729         if( ads < thresh )
 730             mvs[nmv++] = i;
 731     }
 732     return nmv;
 733 }
 734
 735 static int x264_pixel_ads1( int enc_dc[1], uint16_t *sums, int delta,
 736                             uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
 737 {
 738     int nmv = 0;
 739     for( int i = 0; i<width; i++, sums++ )
 740     {
 741         int ads = abs( enc_dc[0] - sums[0] )
 742                 + cost_mvx[i];
 743         if( ads < thresh )
 744             mvs[nmv++] = i;
 745     }
 746     return nmv;
 747 }
 748
 749
 750 /****************************************************************************
 751  * x264_pixel_init:
 752  ****************************************************************************/
 753 void x264_pixel_init( int cpu, x264_pixel_function_t *pixf )
 754 {
 755     memset( pixf, 0, sizeof(*pixf) );
 756
 757 #define INIT2_NAME( name1, name2, cpu ) \
 758     pixf->name1[PIXEL_16x16] = x264_pixel_##name2##_16x16##cpu;\
 759     pixf->name1[PIXEL_16x8]  = x264_pixel_##name2##_16x8##cpu;
 760 #define INIT4_NAME( name1, name2, cpu ) \
 761     INIT2_NAME( name1, name2, cpu ) \
 762     pixf->name1[PIXEL_8x16]  = x264_pixel_##name2##_8x16##cpu;\
 763     pixf->name1[PIXEL_8x8]   = x264_pixel_##name2##_8x8##cpu;
 764 #define INIT5_NAME( name1, name2, cpu ) \
 765     INIT4_NAME( name1, name2, cpu ) \
 766     pixf->name1[PIXEL_8x4]   = x264_pixel_##name2##_8x4##cpu;
 767 #define INIT6_NAME( name1, name2, cpu ) \
 768     INIT5_NAME( name1, name2, cpu ) \
 769     pixf->name1[PIXEL_4x8]   = x264_pixel_##name2##_4x8##cpu;
 770 #define INIT7_NAME( name1, name2, cpu ) \
 771     INIT6_NAME( name1, name2, cpu ) \
 772     pixf->name1[PIXEL_4x4]   = x264_pixel_##name2##_4x4##cpu;
 773 #define INIT8_NAME( name1, name2, cpu ) \
 774     INIT7_NAME( name1, name2, cpu ) \
 775     pixf->name1[PIXEL_4x16]  = x264_pixel_##name2##_4x16##cpu;
 776 #define INIT2( name, cpu ) INIT2_NAME( name, name, cpu )
 777 #define INIT4( name, cpu ) INIT4_NAME( name, name, cpu )
 778 #define INIT5( name, cpu ) INIT5_NAME( name, name, cpu )
 779 #define INIT6( name, cpu ) INIT6_NAME( name, name, cpu )
 780 #define INIT7( name, cpu ) INIT7_NAME( name, name, cpu )
 781 #define INIT8( name, cpu ) INIT8_NAME( name, name, cpu )
 782
 783 #define INIT_ADS( cpu ) \
 784     pixf->ads[PIXEL_16x16] = x264_pixel_ads4##cpu;\
 785     pixf->ads[PIXEL_16x8] = x264_pixel_ads2##cpu;\
 786     pixf->ads[PIXEL_8x8] = x264_pixel_ads1##cpu;
 787
 788     INIT8( sad, );
 789     INIT8_NAME( sad_aligned, sad, );
 790     INIT7( sad_x3, );
 791     INIT7( sad_x4, );
 792     INIT8( ssd, );
 793     INIT8( satd, );
 794     INIT7( satd_x3, );
 795     INIT7( satd_x4, );
 796     INIT4( hadamard_ac, );
 797     INIT_ADS( );
 798
 799     pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16;
 800     pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8;
 801     pixf->var[PIXEL_16x16] = x264_pixel_var_16x16;
 802     pixf->var[PIXEL_8x16]  = x264_pixel_var_8x16;
 803     pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8;
 804     pixf->var2[PIXEL_8x16]  = x264_pixel_var2_8x16;
 805     pixf->var2[PIXEL_8x8]   = x264_pixel_var2_8x8;
 806
 807     pixf->ssd_nv12_core = pixel_ssd_nv12_core;
 808     pixf->ssim_4x4x2_core = ssim_4x4x2_core;
 809     pixf->ssim_end4 = ssim_end4;
 810     pixf->vsad = pixel_vsad;
 811
 812     pixf->intra_sad_x3_4x4    = x264_intra_sad_x3_4x4;
 813     pixf->intra_satd_x3_4x4   = x264_intra_satd_x3_4x4;
 814     pixf->intra_sad_x3_8x8    = x264_intra_sad_x3_8x8;
 815     pixf->intra_sa8d_x3_8x8   = x264_intra_sa8d_x3_8x8;
 816     pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c;
 817     pixf->intra_satd_x3_8x8c  = x264_intra_satd_x3_8x8c;
 818     pixf->intra_sad_x3_8x16c  = x264_intra_sad_x3_8x16c;
 819     pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c;
 820     pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16;
 821     pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16;
 822
 823 #if HIGH_BIT_DEPTH
 824 #if HAVE_MMX
 825     if( cpu&X264_CPU_MMX2 )
 826     {
 827         INIT7( sad, _mmx2 );
 828         INIT7( sad_x3, _mmx2 );
 829         INIT7( sad_x4, _mmx2 );
 830         INIT8( satd, _mmx2 );
 831         INIT7( satd_x3, _mmx2 );
 832         INIT7( satd_x4, _mmx2 );
 833         INIT4( hadamard_ac, _mmx2 );
 834         INIT8( ssd, _mmx2 );
 835         INIT_ADS( _mmx2 );
 836
 837         pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_mmx2;
 838         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_mmx2;
 839         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_mmx2;
 840 #if ARCH_X86
 841         pixf->var2[PIXEL_8x8]  = x264_pixel_var2_8x8_mmx2;
 842         pixf->var2[PIXEL_8x16] = x264_pixel_var2_8x16_mmx2;
 843 #endif
 844
 845         pixf->intra_sad_x3_4x4    = x264_intra_sad_x3_4x4_mmx2;
 846         pixf->intra_satd_x3_4x4   = x264_intra_satd_x3_4x4_mmx2;
 847         pixf->intra_sad_x3_8x8    = x264_intra_sad_x3_8x8_mmx2;
 848         pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c_mmx2;
 849         pixf->intra_satd_x3_8x8c  = x264_intra_satd_x3_8x8c_mmx2;
 850         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_mmx2;
 851         pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_mmx2;
 852     }
 853     if( cpu&X264_CPU_SSE2 )
 854     {
 855         INIT4_NAME( sad_aligned, sad, _sse2_aligned );
 856         INIT5( ssd, _sse2 );
 857
 858         pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_sse2;
 859         pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8_sse2;
 860 #if ARCH_X86_64
 861         pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_sse2;
 862 #endif
 863         pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_sse2;
 864         pixf->ssim_4x4x2_core  = x264_pixel_ssim_4x4x2_core_sse2;
 865         pixf->ssim_end4        = x264_pixel_ssim_end4_sse2;
 866         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_sse2;
 867         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_sse2;
 868         pixf->var2[PIXEL_8x8]  = x264_pixel_var2_8x8_sse2;
 869         pixf->var2[PIXEL_8x16] = x264_pixel_var2_8x16_sse2;
 870         pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_sse2;
 871     }
 872     if( (cpu&X264_CPU_SSE2) && !(cpu&X264_CPU_SSE2_IS_SLOW) )
 873     {
 874         INIT5( sad, _sse2 );
 875         INIT2( sad_x3, _sse2 );
 876         INIT2( sad_x4, _sse2 );
 877         INIT_ADS( _sse2 );
 878
 879         if( !(cpu&X264_CPU_STACK_MOD4) )
 880         {
 881             INIT4( hadamard_ac, _sse2 );
 882         }
 883         pixf->vsad = x264_pixel_vsad_sse2;
 884         pixf->intra_sad_x3_8x8    = x264_intra_sad_x3_8x8_sse2;
 885         pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c_sse2;
 886         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_sse2;
 887     }
 888     if( cpu&X264_CPU_SSE2_IS_FAST )
 889     {
 890         pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
 891         pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_sse2;
 892         pixf->sad_x3[PIXEL_8x8]  = x264_pixel_sad_x3_8x8_sse2;
 893         pixf->sad_x3[PIXEL_8x4]  = x264_pixel_sad_x3_8x4_sse2;
 894         pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_sse2;
 895         pixf->sad_x4[PIXEL_8x8]  = x264_pixel_sad_x4_8x8_sse2;
 896         pixf->sad_x4[PIXEL_8x4]  = x264_pixel_sad_x4_8x4_sse2;
 897     }
 898     if( cpu&X264_CPU_SSSE3 )
 899     {
 900         INIT4_NAME( sad_aligned, sad, _ssse3_aligned );
 901         INIT7( sad, _ssse3 );
 902         INIT7( sad_x3, _ssse3 );
 903         INIT7( sad_x4, _ssse3 );
 904         INIT_ADS( _ssse3 );
 905
 906         if( !(cpu&X264_CPU_STACK_MOD4) )
 907         {
 908             INIT4( hadamard_ac, _ssse3 );
 909         }
 910         pixf->vsad = x264_pixel_vsad_ssse3;
 911         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_ssse3;
 912         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_ssse3;
 913         pixf->intra_sad_x3_4x4    = x264_intra_sad_x3_4x4_ssse3;
 914         pixf->intra_sad_x3_8x8    = x264_intra_sad_x3_8x8_ssse3;
 915         pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c_ssse3;
 916         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_ssse3;
 917     }
 918     if( cpu&X264_CPU_SSE4 )
 919     {
 920         if( !(cpu&X264_CPU_STACK_MOD4) )
 921         {
 922             INIT4( hadamard_ac, _sse4 );
 923         }
 924         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_sse4;
 925         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_sse4;
 926     }
 927     if( cpu&X264_CPU_AVX )
 928     {
 929         INIT_ADS( _avx );
 930         if( !(cpu&X264_CPU_STACK_MOD4) )
 931         {
 932             INIT4( hadamard_ac, _avx );
 933         }
 934         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_avx;
 935         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_avx;
 936         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_avx;
 937         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_avx;
 938         pixf->ssd_nv12_core    = x264_pixel_ssd_nv12_core_avx;
 939         pixf->ssim_4x4x2_core  = x264_pixel_ssim_4x4x2_core_avx;
 940         pixf->ssim_end4        = x264_pixel_ssim_end4_avx;
 941     }
 942     if( cpu&X264_CPU_XOP )
 943     {
 944         pixf->vsad = x264_pixel_vsad_xop;
 945     }
 946 #endif // HAVE_MMX
 947 #else // !HIGH_BIT_DEPTH
 948 #if HAVE_MMX
 949     if( cpu&X264_CPU_MMX )
 950     {
 951         INIT8( ssd, _mmx );
 952     }
 953
 954     if( cpu&X264_CPU_MMX2 )
 955     {
 956         INIT8( sad, _mmx2 );
 957         INIT8_NAME( sad_aligned, sad, _mmx2 );
 958         INIT7( sad_x3, _mmx2 );
 959         INIT7( sad_x4, _mmx2 );
 960         INIT8( satd, _mmx2 );
 961         INIT7( satd_x3, _mmx2 );
 962         INIT7( satd_x4, _mmx2 );
 963         INIT4( hadamard_ac, _mmx2 );
 964         INIT_ADS( _mmx2 );
 965         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_mmx2;
 966         pixf->var[PIXEL_8x16]  = x264_pixel_var_8x16_mmx2;
 967         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_mmx2;
 968         pixf->ssd_nv12_core    = x264_pixel_ssd_nv12_core_mmx2;
 969 #if ARCH_X86
 970         pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_mmx2;
 971         pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8_mmx2;
 972         pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_mmx2;
 973         pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_mmx2;
 974         pixf->var2[PIXEL_8x8] = x264_pixel_var2_8x8_mmx2;
 975         pixf->var2[PIXEL_8x16] = x264_pixel_var2_8x16_mmx2;
 976         pixf->vsad = x264_pixel_vsad_mmx2;
 977
 978         if( cpu&X264_CPU_CACHELINE_32 )
 979         {
 980             INIT5( sad, _cache32_mmx2 );
 981             INIT4( sad_x3, _cache32_mmx2 );
 982             INIT4( sad_x4, _cache32_mmx2 );
 983         }
 984         else if( cpu&X264_CPU_CACHELINE_64 )
 985         {
 986             INIT5( sad, _cache64_mmx2 );
 987             INIT4( sad_x3, _cache64_mmx2 );
 988             INIT4( sad_x4, _cache64_mmx2 );
 989         }
 990 #else
 991         if( cpu&X264_CPU_CACHELINE_64 )
 992         {
 993             pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_cache64_mmx2;
 994             pixf->sad[PIXEL_8x8]  = x264_pixel_sad_8x8_cache64_mmx2;
 995             pixf->sad[PIXEL_8x4]  = x264_pixel_sad_8x4_cache64_mmx2;
 996             pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_mmx2;
 997             pixf->sad_x3[PIXEL_8x8]  = x264_pixel_sad_x3_8x8_cache64_mmx2;
 998             pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_mmx2;
 999             pixf->sad_x4[PIXEL_8x8]  = x264_pixel_sad_x4_8x8_cache64_mmx2;
1000         }
1001 #endif
1002         pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_mmx2;
1003         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_mmx2;
1004         pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c_mmx2;
1005         pixf->intra_sad_x3_8x16c  = x264_intra_sad_x3_8x16c_mmx2;
1006         pixf->intra_satd_x3_8x8c  = x264_intra_satd_x3_8x8c_mmx2;
1007         pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c_mmx2;
1008         pixf->intra_sad_x3_8x8    = x264_intra_sad_x3_8x8_mmx2;
1009         pixf->intra_satd_x3_4x4   = x264_intra_satd_x3_4x4_mmx2;
1010         pixf->intra_sad_x3_4x4    = x264_intra_sad_x3_4x4_mmx2;
1011     }
1012
1013     if( cpu&X264_CPU_SSE2 )
1014     {
1015         INIT5( ssd, _sse2slow );
1016         INIT2_NAME( sad_aligned, sad, _sse2_aligned );
1017         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_sse2;
1018         pixf->ssd_nv12_core    = x264_pixel_ssd_nv12_core_sse2;
1019         pixf->ssim_4x4x2_core  = x264_pixel_ssim_4x4x2_core_sse2;
1020         pixf->ssim_end4        = x264_pixel_ssim_end4_sse2;
1021         pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_sse2;
1022         pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8_sse2;
1023 #if ARCH_X86_64
1024         pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_sse2;
1025 #endif
1026         pixf->var2[PIXEL_8x8]   = x264_pixel_var2_8x8_sse2;
1027         pixf->var2[PIXEL_8x16]  = x264_pixel_var2_8x16_sse2;
1028         pixf->vsad = x264_pixel_vsad_sse2;
1029     }
1030
1031     if( (cpu&X264_CPU_SSE2) && !(cpu&X264_CPU_SSE2_IS_SLOW) )
1032     {
1033         INIT2( sad, _sse2 );
1034         INIT2( sad_x3, _sse2 );
1035         INIT2( sad_x4, _sse2 );
1036         INIT6( satd, _sse2 );
1037         pixf->satd[PIXEL_4x16]   = x264_pixel_satd_4x16_sse2;
1038         INIT6( satd_x3, _sse2 );
1039         INIT6( satd_x4, _sse2 );
1040         if( !(cpu&X264_CPU_STACK_MOD4) )
1041         {
1042             INIT4( hadamard_ac, _sse2 );
1043         }
1044         INIT_ADS( _sse2 );
1045         pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_sse2;
1046         pixf->var[PIXEL_8x16] = x264_pixel_var_8x16_sse2;
1047         pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_sse2;
1048         pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c_sse2;
1049         pixf->intra_sad_x3_8x16c  = x264_intra_sad_x3_8x16c_sse2;
1050         if( cpu&X264_CPU_CACHELINE_64 )
1051         {
1052             INIT2( ssd, _sse2); /* faster for width 16 on p4 */
1053 #if ARCH_X86
1054             INIT2( sad, _cache64_sse2 );
1055             INIT2( sad_x3, _cache64_sse2 );
1056             INIT2( sad_x4, _cache64_sse2 );
1057 #endif
1058            if( cpu&X264_CPU_SSE2_IS_FAST )
1059            {
1060                pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_sse2;
1061                pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_sse2;
1062            }
1063         }
1064
1065         if( cpu&X264_CPU_SSE_MISALIGN )
1066         {
1067             INIT2( sad_x3, _sse2_misalign );
1068             INIT2( sad_x4, _sse2_misalign );
1069         }
1070     }
1071
1072     if( cpu&X264_CPU_SSE2_IS_FAST && !(cpu&X264_CPU_CACHELINE_64) )
1073     {
1074         pixf->sad_aligned[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
1075         pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
1076         pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_sse2;
1077         pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_sse2;
1078         pixf->sad_x3[PIXEL_8x4] = x264_pixel_sad_x3_8x4_sse2;
1079         pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_sse2;
1080         pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_sse2;
1081         pixf->sad_x4[PIXEL_8x4] = x264_pixel_sad_x4_8x4_sse2;
1082     }
1083
1084     if( (cpu&X264_CPU_SSE3) && (cpu&X264_CPU_CACHELINE_64) )
1085     {
1086         INIT2( sad, _sse3 );
1087         INIT2( sad_x3, _sse3 );
1088         INIT2( sad_x4, _sse3 );
1089     }
1090
1091     if( cpu&X264_CPU_SSSE3 )
1092     {
1093         if( !(cpu&X264_CPU_STACK_MOD4) )
1094         {
1095             INIT4( hadamard_ac, _ssse3 );
1096             pixf->intra_sad_x9_4x4  = x264_intra_sad_x9_4x4_ssse3;
1097             pixf->intra_satd_x9_4x4 = x264_intra_satd_x9_4x4_ssse3;
1098             pixf->intra_sad_x9_8x8  = x264_intra_sad_x9_8x8_ssse3;
1099 #if ARCH_X86_64
1100             pixf->intra_sa8d_x9_8x8 = x264_intra_sa8d_x9_8x8_ssse3;
1101 #endif
1102         }
1103         INIT_ADS( _ssse3 );
1104         if( !(cpu&X264_CPU_SLOW_ATOM) )
1105         {
1106             INIT8( ssd, _ssse3 );
1107             pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_ssse3;
1108             pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_ssse3;
1109             INIT8( satd, _ssse3 );
1110             INIT7( satd_x3, _ssse3 );
1111             INIT7( satd_x4, _ssse3 );
1112         }
1113         pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_ssse3;
1114         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_ssse3;
1115         pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c_ssse3;
1116         pixf->intra_satd_x3_8x8c  = x264_intra_satd_x3_8x8c_ssse3;
1117         pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c_ssse3;
1118         pixf->var2[PIXEL_8x8] = x264_pixel_var2_8x8_ssse3;
1119         pixf->var2[PIXEL_8x16] = x264_pixel_var2_8x16_ssse3;
1120         if( cpu&X264_CPU_CACHELINE_64 )
1121         {
1122             INIT2( sad, _cache64_ssse3 );
1123             INIT2( sad_x3, _cache64_ssse3 );
1124             INIT2( sad_x4, _cache64_ssse3 );
1125         }
1126         if( cpu&X264_CPU_SLOW_ATOM || !(cpu&X264_CPU_SHUFFLE_IS_FAST) )
1127         {
1128             INIT5( ssd, _sse2 ); /* on conroe, sse2 is faster for width8/16 */
1129         }
1130     }
1131
1132     if( cpu&X264_CPU_SSE4 )
1133     {
1134         INIT8( satd, _sse4 );
1135         INIT7( satd_x3, _sse4 );
1136         INIT7( satd_x4, _sse4 );
1137         if( !(cpu&X264_CPU_STACK_MOD4) )
1138         {
1139             INIT4( hadamard_ac, _sse4 );
1140             pixf->intra_sad_x9_4x4  = x264_intra_sad_x9_4x4_sse4;
1141             pixf->intra_satd_x9_4x4 = x264_intra_satd_x9_4x4_sse4;
1142             pixf->intra_sad_x9_8x8  = x264_intra_sad_x9_8x8_sse4;
1143 #if ARCH_X86_64
1144             pixf->intra_sa8d_x9_8x8 = x264_intra_sa8d_x9_8x8_sse4;
1145 #endif
1146         }
1147         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_sse4;
1148         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_sse4;
1149         pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c_sse4;
1150     }
1151
1152     if( cpu&X264_CPU_AVX )
1153     {
1154         INIT8( satd, _avx );
1155         INIT7( satd_x3, _avx );
1156         INIT7( satd_x4, _avx );
1157         INIT_ADS( _avx );
1158         if( !(cpu&X264_CPU_STACK_MOD4) )
1159         {
1160             INIT4( hadamard_ac, _avx );
1161             pixf->intra_sad_x9_4x4  = x264_intra_sad_x9_4x4_avx;
1162             pixf->intra_satd_x9_4x4 = x264_intra_satd_x9_4x4_avx;
1163             pixf->intra_sad_x9_8x8  = x264_intra_sad_x9_8x8_avx;
1164 #if ARCH_X86_64
1165             pixf->intra_sa8d_x9_8x8 = x264_intra_sa8d_x9_8x8_avx;
1166 #endif
1167         }
1168         INIT5( ssd, _avx );
1169         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_avx;
1170         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_avx;
1171         pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c_avx;
1172         pixf->ssd_nv12_core    = x264_pixel_ssd_nv12_core_avx;
1173         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_avx;
1174         pixf->var[PIXEL_8x16]  = x264_pixel_var_8x16_avx;
1175         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_avx;
1176         pixf->ssim_4x4x2_core  = x264_pixel_ssim_4x4x2_core_avx;
1177         pixf->ssim_end4        = x264_pixel_ssim_end4_avx;
1178     }
1179
1180     if( cpu&X264_CPU_XOP )
1181     {
1182         INIT7( satd, _xop );
1183         INIT7( satd_x3, _xop );
1184         INIT7( satd_x4, _xop );
1185         if( !(cpu&X264_CPU_STACK_MOD4) )
1186         {
1187             INIT4( hadamard_ac, _xop );
1188             pixf->intra_satd_x9_4x4 = x264_intra_satd_x9_4x4_xop;
1189         }
1190         INIT5( ssd, _xop );
1191         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_xop;
1192         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_xop;
1193         pixf->intra_satd_x3_8x16c = x264_intra_satd_x3_8x16c_xop;
1194         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_xop;
1195         pixf->var[PIXEL_8x16]  = x264_pixel_var_8x16_xop;
1196         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_xop;
1197         pixf->var2[PIXEL_8x8] = x264_pixel_var2_8x8_xop;
1198         pixf->var2[PIXEL_8x16] = x264_pixel_var2_8x16_xop;
1199     }
1200 #endif //HAVE_MMX
1201
1202 #if HAVE_ARMV6
1203     if( cpu&X264_CPU_ARMV6 )
1204     {
1205         pixf->sad[PIXEL_4x8] = x264_pixel_sad_4x8_armv6;
1206         pixf->sad[PIXEL_4x4] = x264_pixel_sad_4x4_armv6;
1207         pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_4x8_armv6;
1208         pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_4x4_armv6;
1209     }
1210     if( cpu&X264_CPU_NEON )
1211     {
1212         INIT5( sad, _neon );
1213         INIT5( sad_aligned, _neon );
1214         INIT7( sad_x3, _neon );
1215         INIT7( sad_x4, _neon );
1216         INIT7( ssd, _neon );
1217         INIT7( satd, _neon );
1218         INIT7( satd_x3, _neon );
1219         INIT7( satd_x4, _neon );
1220         INIT4( hadamard_ac, _neon );
1221         pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8_neon;
1222         pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_neon;
1223         pixf->var[PIXEL_8x8]    = x264_pixel_var_8x8_neon;
1224         pixf->var[PIXEL_16x16]  = x264_pixel_var_16x16_neon;
1225         pixf->var2[PIXEL_8x8]   = x264_pixel_var2_8x8_neon;
1226
1227         pixf->ssim_4x4x2_core   = x264_pixel_ssim_4x4x2_core_neon;
1228         pixf->ssim_end4         = x264_pixel_ssim_end4_neon;
1229
1230         if( cpu&X264_CPU_FAST_NEON_MRC )
1231         {
1232             pixf->sad[PIXEL_4x8] = x264_pixel_sad_4x8_neon;
1233             pixf->sad[PIXEL_4x4] = x264_pixel_sad_4x4_neon;
1234             pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_aligned_4x8_neon;
1235             pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_aligned_4x4_neon;
1236         }
1237         else    // really just scheduled for dual issue / A8
1238         {
1239             INIT5( sad_aligned, _neon_dual );
1240         }
1241     }
1242 #endif
1243 #endif // HIGH_BIT_DEPTH
1244 #if HAVE_ALTIVEC
1245     if( cpu&X264_CPU_ALTIVEC )
1246     {
1247         x264_pixel_altivec_init( pixf );
1248     }
1249 #endif
1250 #if !HIGH_BIT_DEPTH
1251 #if ARCH_UltraSPARC
1252     INIT4( sad, _vis );
1253     INIT4( sad_x3, _vis );
1254     INIT4( sad_x4, _vis );
1255 #endif
1256 #endif // !HIGH_BIT_DEPTH
1257
1258     pixf->ads[PIXEL_8x16] =
1259     pixf->ads[PIXEL_8x4] =
1260     pixf->ads[PIXEL_4x8] = pixf->ads[PIXEL_16x8];
1261     pixf->ads[PIXEL_4x4] = pixf->ads[PIXEL_8x8];
1262 }
1263