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_4x8,    4,  8 )
  72 PIXEL_SAD_C( x264_pixel_sad_4x4,    4,  4 )
  73
  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_4x8,    4,  8 )
 102 PIXEL_SSD_C( x264_pixel_ssd_4x4,    4,  4 )
 103
 104 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 )
 105 {
 106     uint64_t i_ssd = 0;
 107     int y;
 108     int align = !(((intptr_t)pix1 | (intptr_t)pix2 | i_pix1 | i_pix2) & 15);
 109
 110 #define SSD(size) i_ssd += pf->ssd[size]( pix1 + y*i_pix1 + x, i_pix1, \
 111                                           pix2 + y*i_pix2 + x, i_pix2 );
 112     for( y = 0; y < i_height-15; y += 16 )
 113     {
 114         int x = 0;
 115         if( align )
 116             for( ; x < i_width-15; x += 16 )
 117                 SSD(PIXEL_16x16);
 118         for( ; x < i_width-7; x += 8 )
 119             SSD(PIXEL_8x16);
 120     }
 121     if( y < i_height-7 )
 122         for( int x = 0; x < i_width-7; x += 8 )
 123             SSD(PIXEL_8x8);
 124 #undef SSD
 125
 126 #define SSD1 { int d = pix1[y*i_pix1+x] - pix2[y*i_pix2+x]; i_ssd += d*d; }
 127     if( i_width & 7 )
 128     {
 129         for( y = 0; y < (i_height & ~7); y++ )
 130             for( int x = i_width & ~7; x < i_width; x++ )
 131                 SSD1;
 132     }
 133     if( i_height & 7 )
 134     {
 135         for( y = i_height & ~7; y < i_height; y++ )
 136             for( int x = 0; x < i_width; x++ )
 137                 SSD1;
 138     }
 139 #undef SSD1
 140
 141     return i_ssd;
 142 }
 143
 144 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 {
 146     *ssd_u = 0, *ssd_v = 0;
 147     for( int y = 0; y < height; y++, pixuv1+=stride1, pixuv2+=stride2 )
 148         for( int x = 0; x < width; x++ )
 149         {
 150             int du = pixuv1[2*x]   - pixuv2[2*x];
 151             int dv = pixuv1[2*x+1] - pixuv2[2*x+1];
 152             *ssd_u += du*du;
 153             *ssd_v += dv*dv;
 154         }
 155 }
 156
 157 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 {
 159     pf->ssd_nv12_core( pix1, i_pix1, pix2, i_pix2, i_width&~7, i_height, ssd_u, ssd_v );
 160     if( i_width&7 )
 161     {
 162         uint64_t tmp[2];
 163         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] );
 164         *ssd_u += tmp[0];
 165         *ssd_v += tmp[1];
 166     }
 167 }
 168
 169 /****************************************************************************
 170  * pixel_var_wxh
 171  ****************************************************************************/
 172 #define PIXEL_VAR_C( name, w ) \
 173 static uint64_t name( pixel *pix, int i_stride ) \
 174 {                                             \
 175     uint32_t sum = 0, sqr = 0;                \
 176     for( int y = 0; y < w; y++ )              \
 177     {                                         \
 178         for( int x = 0; x < w; x++ )          \
 179         {                                     \
 180             sum += pix[x];                    \
 181             sqr += pix[x] * pix[x];           \
 182         }                                     \
 183         pix += i_stride;                      \
 184     }                                         \
 185     return sum + ((uint64_t)sqr << 32);       \
 186 }
 187
 188 PIXEL_VAR_C( x264_pixel_var_16x16, 16 )
 189 PIXEL_VAR_C( x264_pixel_var_8x8,    8 )
 190
 191 /****************************************************************************
 192  * pixel_var2_wxh
 193  ****************************************************************************/
 194 static int pixel_var2_8x8( pixel *pix1, int i_stride1, pixel *pix2, int i_stride2, int *ssd )
 195 {
 196     uint32_t var = 0, sum = 0, sqr = 0;
 197     for( int y = 0; y < 8; y++ )
 198     {
 199         for( int x = 0; x < 8; x++ )
 200         {
 201             int diff = pix1[x] - pix2[x];
 202             sum += diff;
 203             sqr += diff * diff;
 204         }
 205         pix1 += i_stride1;
 206         pix2 += i_stride2;
 207     }
 208     sum = abs(sum);
 209     var = sqr - ((uint64_t)sum * sum >> 6);
 210     *ssd = sqr;
 211     return var;
 212 }
 213
 214 #if BIT_DEPTH > 8
 215     typedef uint32_t sum_t;
 216     typedef uint64_t sum2_t;
 217 #else
 218     typedef uint16_t sum_t;
 219     typedef uint32_t sum2_t;
 220 #endif
 221 #define BITS_PER_SUM (8 * sizeof(sum_t))
 222
 223 #define HADAMARD4(d0, d1, d2, d3, s0, s1, s2, s3) {\
 224     sum2_t t0 = s0 + s1;\
 225     sum2_t t1 = s0 - s1;\
 226     sum2_t t2 = s2 + s3;\
 227     sum2_t t3 = s2 - s3;\
 228     d0 = t0 + t2;\
 229     d2 = t0 - t2;\
 230     d1 = t1 + t3;\
 231     d3 = t1 - t3;\
 232 }
 233
 234 // in: a pseudo-simd number of the form x+(y<<16)
 235 // return: abs(x)+(abs(y)<<16)
 236 static ALWAYS_INLINE sum2_t abs2( sum2_t a )
 237 {
 238     sum2_t s = ((a>>(BITS_PER_SUM-1))&(((sum2_t)1<<BITS_PER_SUM)+1))*((sum_t)-1);
 239     return (a+s)^s;
 240 }
 241
 242 /****************************************************************************
 243  * pixel_satd_WxH: sum of 4x4 Hadamard transformed differences
 244  ****************************************************************************/
 245
 246 static NOINLINE int x264_pixel_satd_4x4( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
 247 {
 248     sum2_t tmp[4][2];
 249     sum2_t a0, a1, a2, a3, b0, b1;
 250     sum2_t sum = 0;
 251     for( int i = 0; i < 4; i++, pix1 += i_pix1, pix2 += i_pix2 )
 252     {
 253         a0 = pix1[0] - pix2[0];
 254         a1 = pix1[1] - pix2[1];
 255         b0 = (a0+a1) + ((a0-a1)<<BITS_PER_SUM);
 256         a2 = pix1[2] - pix2[2];
 257         a3 = pix1[3] - pix2[3];
 258         b1 = (a2+a3) + ((a2-a3)<<BITS_PER_SUM);
 259         tmp[i][0] = b0 + b1;
 260         tmp[i][1] = b0 - b1;
 261     }
 262     for( int i = 0; i < 2; i++ )
 263     {
 264         HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
 265         a0 = abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
 266         sum += ((sum_t)a0) + (a0>>BITS_PER_SUM);
 267     }
 268     return sum >> 1;
 269 }
 270
 271 static NOINLINE int x264_pixel_satd_8x4( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
 272 {
 273     sum2_t tmp[4][4];
 274     sum2_t a0, a1, a2, a3;
 275     sum2_t sum = 0;
 276     for( int i = 0; i < 4; i++, pix1 += i_pix1, pix2 += i_pix2 )
 277     {
 278         a0 = (pix1[0] - pix2[0]) + ((sum2_t)(pix1[4] - pix2[4]) << BITS_PER_SUM);
 279         a1 = (pix1[1] - pix2[1]) + ((sum2_t)(pix1[5] - pix2[5]) << BITS_PER_SUM);
 280         a2 = (pix1[2] - pix2[2]) + ((sum2_t)(pix1[6] - pix2[6]) << BITS_PER_SUM);
 281         a3 = (pix1[3] - pix2[3]) + ((sum2_t)(pix1[7] - pix2[7]) << BITS_PER_SUM);
 282         HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], a0,a1,a2,a3 );
 283     }
 284     for( int i = 0; i < 4; i++ )
 285     {
 286         HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
 287         sum += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
 288     }
 289     return (((sum_t)sum) + (sum>>BITS_PER_SUM)) >> 1;
 290 }
 291
 292 #define PIXEL_SATD_C( w, h, sub )\
 293 static int x264_pixel_satd_##w##x##h( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )\
 294 {\
 295     int sum = sub( pix1, i_pix1, pix2, i_pix2 )\
 296             + sub( pix1+4*i_pix1, i_pix1, pix2+4*i_pix2, i_pix2 );\
 297     if( w==16 )\
 298         sum+= sub( pix1+8, i_pix1, pix2+8, i_pix2 )\
 299             + sub( pix1+8+4*i_pix1, i_pix1, pix2+8+4*i_pix2, i_pix2 );\
 300     if( h==16 )\
 301         sum+= sub( pix1+8*i_pix1, i_pix1, pix2+8*i_pix2, i_pix2 )\
 302             + sub( pix1+12*i_pix1, i_pix1, pix2+12*i_pix2, i_pix2 );\
 303     if( w==16 && h==16 )\
 304         sum+= sub( pix1+8+8*i_pix1, i_pix1, pix2+8+8*i_pix2, i_pix2 )\
 305             + sub( pix1+8+12*i_pix1, i_pix1, pix2+8+12*i_pix2, i_pix2 );\
 306     return sum;\
 307 }
 308 PIXEL_SATD_C( 16, 16, x264_pixel_satd_8x4 )
 309 PIXEL_SATD_C( 16, 8,  x264_pixel_satd_8x4 )
 310 PIXEL_SATD_C( 8,  16, x264_pixel_satd_8x4 )
 311 PIXEL_SATD_C( 8,  8,  x264_pixel_satd_8x4 )
 312 PIXEL_SATD_C( 4,  8,  x264_pixel_satd_4x4 )
 313
 314
 315 static NOINLINE int sa8d_8x8( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
 316 {
 317     sum2_t tmp[8][4];
 318     sum2_t a0, a1, a2, a3, a4, a5, a6, a7, b0, b1, b2, b3;
 319     sum2_t sum = 0;
 320     for( int i = 0; i < 8; i++, pix1 += i_pix1, pix2 += i_pix2 )
 321     {
 322         a0 = pix1[0] - pix2[0];
 323         a1 = pix1[1] - pix2[1];
 324         b0 = (a0+a1) + ((a0-a1)<<BITS_PER_SUM);
 325         a2 = pix1[2] - pix2[2];
 326         a3 = pix1[3] - pix2[3];
 327         b1 = (a2+a3) + ((a2-a3)<<BITS_PER_SUM);
 328         a4 = pix1[4] - pix2[4];
 329         a5 = pix1[5] - pix2[5];
 330         b2 = (a4+a5) + ((a4-a5)<<BITS_PER_SUM);
 331         a6 = pix1[6] - pix2[6];
 332         a7 = pix1[7] - pix2[7];
 333         b3 = (a6+a7) + ((a6-a7)<<BITS_PER_SUM);
 334         HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], b0,b1,b2,b3 );
 335     }
 336     for( int i = 0; i < 4; i++ )
 337     {
 338         HADAMARD4( a0, a1, a2, a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
 339         HADAMARD4( a4, a5, a6, a7, tmp[4][i], tmp[5][i], tmp[6][i], tmp[7][i] );
 340         b0  = abs2(a0+a4) + abs2(a0-a4);
 341         b0 += abs2(a1+a5) + abs2(a1-a5);
 342         b0 += abs2(a2+a6) + abs2(a2-a6);
 343         b0 += abs2(a3+a7) + abs2(a3-a7);
 344         sum += (sum_t)b0 + (b0>>BITS_PER_SUM);
 345     }
 346     return sum;
 347 }
 348
 349 static int x264_pixel_sa8d_8x8( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
 350 {
 351     int sum = sa8d_8x8( pix1, i_pix1, pix2, i_pix2 );
 352     return (sum+2)>>2;
 353 }
 354
 355 static int x264_pixel_sa8d_16x16( pixel *pix1, int i_pix1, pixel *pix2, int i_pix2 )
 356 {
 357     int sum = sa8d_8x8( pix1, i_pix1, pix2, i_pix2 )
 358             + sa8d_8x8( pix1+8, i_pix1, pix2+8, i_pix2 )
 359             + sa8d_8x8( pix1+8*i_pix1, i_pix1, pix2+8*i_pix2, i_pix2 )
 360             + sa8d_8x8( pix1+8+8*i_pix1, i_pix1, pix2+8+8*i_pix2, i_pix2 );
 361     return (sum+2)>>2;
 362 }
 363
 364
 365 static NOINLINE uint64_t pixel_hadamard_ac( pixel *pix, int stride )
 366 {
 367     sum2_t tmp[32];
 368     sum2_t a0, a1, a2, a3, dc;
 369     sum2_t sum4 = 0, sum8 = 0;
 370     for( int i = 0; i < 8; i++, pix+=stride )
 371     {
 372         sum2_t *t = tmp + (i&3) + (i&4)*4;
 373         a0 = (pix[0]+pix[1]) + ((sum2_t)(pix[0]-pix[1])<<BITS_PER_SUM);
 374         a1 = (pix[2]+pix[3]) + ((sum2_t)(pix[2]-pix[3])<<BITS_PER_SUM);
 375         t[0] = a0 + a1;
 376         t[4] = a0 - a1;
 377         a2 = (pix[4]+pix[5]) + ((sum2_t)(pix[4]-pix[5])<<BITS_PER_SUM);
 378         a3 = (pix[6]+pix[7]) + ((sum2_t)(pix[6]-pix[7])<<BITS_PER_SUM);
 379         t[8] = a2 + a3;
 380         t[12] = a2 - a3;
 381     }
 382     for( int i = 0; i < 8; i++ )
 383     {
 384         HADAMARD4( a0, a1, a2, a3, tmp[i*4+0], tmp[i*4+1], tmp[i*4+2], tmp[i*4+3] );
 385         tmp[i*4+0] = a0;
 386         tmp[i*4+1] = a1;
 387         tmp[i*4+2] = a2;
 388         tmp[i*4+3] = a3;
 389         sum4 += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
 390     }
 391     for( int i = 0; i < 8; i++ )
 392     {
 393         HADAMARD4( a0,a1,a2,a3, tmp[i], tmp[8+i], tmp[16+i], tmp[24+i] );
 394         sum8 += abs2(a0) + abs2(a1) + abs2(a2) + abs2(a3);
 395     }
 396     dc = (sum_t)(tmp[0] + tmp[8] + tmp[16] + tmp[24]);
 397     sum4 = (sum_t)sum4 + (sum4>>BITS_PER_SUM) - dc;
 398     sum8 = (sum_t)sum8 + (sum8>>BITS_PER_SUM) - dc;
 399     return ((uint64_t)sum8<<32) + sum4;
 400 }
 401
 402 #define HADAMARD_AC(w,h) \
 403 static uint64_t x264_pixel_hadamard_ac_##w##x##h( pixel *pix, int stride )\
 404 {\
 405     uint64_t sum = pixel_hadamard_ac( pix, stride );\
 406     if( w==16 )\
 407         sum += pixel_hadamard_ac( pix+8, stride );\
 408     if( h==16 )\
 409         sum += pixel_hadamard_ac( pix+8*stride, stride );\
 410     if( w==16 && h==16 )\
 411         sum += pixel_hadamard_ac( pix+8*stride+8, stride );\
 412     return ((sum>>34)<<32) + ((uint32_t)sum>>1);\
 413 }
 414 HADAMARD_AC( 16, 16 )
 415 HADAMARD_AC( 16, 8 )
 416 HADAMARD_AC( 8, 16 )
 417 HADAMARD_AC( 8, 8 )
 418
 419
 420 /****************************************************************************
 421  * pixel_sad_x4
 422  ****************************************************************************/
 423 #define SAD_X( size ) \
 424 static void x264_pixel_sad_x3_##size( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, int i_stride, int scores[3] )\
 425 {\
 426     scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
 427     scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
 428     scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
 429 }\
 430 static void x264_pixel_sad_x4_##size( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, pixel *pix3, int i_stride, int scores[4] )\
 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     scores[3] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix3, i_stride );\
 436 }
 437
 438 SAD_X( 16x16 )
 439 SAD_X( 16x8 )
 440 SAD_X( 8x16 )
 441 SAD_X( 8x8 )
 442 SAD_X( 8x4 )
 443 SAD_X( 4x8 )
 444 SAD_X( 4x4 )
 445
 446 #if !HIGH_BIT_DEPTH
 447 #if ARCH_UltraSPARC
 448 SAD_X( 16x16_vis )
 449 SAD_X( 16x8_vis )
 450 SAD_X( 8x16_vis )
 451 SAD_X( 8x8_vis )
 452 #endif
 453 #endif // !HIGH_BIT_DEPTH
 454
 455 /****************************************************************************
 456  * pixel_satd_x4
 457  * no faster than single satd, but needed for satd to be a drop-in replacement for sad
 458  ****************************************************************************/
 459
 460 #define SATD_X( size, cpu ) \
 461 static void x264_pixel_satd_x3_##size##cpu( pixel *fenc, pixel *pix0, pixel *pix1, pixel *pix2, int i_stride, int scores[3] )\
 462 {\
 463     scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
 464     scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
 465     scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
 466 }\
 467 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 {\
 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     scores[3] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix3, i_stride );\
 473 }
 474 #define SATD_X_DECL6( cpu )\
 475 SATD_X( 16x16, cpu )\
 476 SATD_X( 16x8, cpu )\
 477 SATD_X( 8x16, cpu )\
 478 SATD_X( 8x8, cpu )\
 479 SATD_X( 8x4, cpu )\
 480 SATD_X( 4x8, cpu )
 481 #define SATD_X_DECL7( cpu )\
 482 SATD_X_DECL6( cpu )\
 483 SATD_X( 4x4, cpu )
 484
 485 SATD_X_DECL7()
 486 #if HAVE_MMX
 487 SATD_X_DECL7( _mmx2 )
 488 #if !HIGH_BIT_DEPTH
 489 SATD_X_DECL6( _sse2 )
 490 SATD_X_DECL7( _ssse3 )
 491 SATD_X_DECL7( _sse4 )
 492 SATD_X_DECL7( _avx )
 493 #endif // !HIGH_BIT_DEPTH
 494 #endif
 495
 496 #if !HIGH_BIT_DEPTH
 497 #if HAVE_ARMV6
 498 SATD_X_DECL7( _neon )
 499 #endif
 500 #endif // !HIGH_BIT_DEPTH
 501
 502 #define INTRA_MBCMP_8x8( mbcmp, cpu, cpu2 )\
 503 void x264_intra_##mbcmp##_x3_8x8##cpu( pixel *fenc, pixel edge[36], int res[3] )\
 504 {\
 505     ALIGNED_ARRAY_16( pixel, pix, [8*FDEC_STRIDE] );\
 506     x264_predict_8x8_v##cpu2( pix, edge );\
 507     res[0] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
 508     x264_predict_8x8_h##cpu2( pix, edge );\
 509     res[1] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
 510     x264_predict_8x8_dc##cpu2( pix, edge );\
 511     res[2] = x264_pixel_##mbcmp##_8x8##cpu( pix, FDEC_STRIDE, fenc, FENC_STRIDE );\
 512 }
 513
 514 INTRA_MBCMP_8x8( sad,, _c )
 515 INTRA_MBCMP_8x8(sa8d,, _c )
 516 #if HIGH_BIT_DEPTH && HAVE_MMX
 517 INTRA_MBCMP_8x8( sad, _mmx2,  _c )
 518 INTRA_MBCMP_8x8( sad, _sse2,  _sse2 )
 519 INTRA_MBCMP_8x8( sad, _ssse3, _sse2 )
 520 INTRA_MBCMP_8x8(sa8d, _sse2,  _sse2 )
 521 #endif
 522
 523 #define INTRA_MBCMP( mbcmp, size, pred1, pred2, pred3, chroma, cpu, cpu2 )\
 524 void x264_intra_##mbcmp##_x3_##size##chroma##cpu( pixel *fenc, pixel *fdec, int res[3] )\
 525 {\
 526     x264_predict_##size##chroma##_##pred1##cpu2( fdec );\
 527     res[0] = x264_pixel_##mbcmp##_##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
 528     x264_predict_##size##chroma##_##pred2##cpu2( fdec );\
 529     res[1] = x264_pixel_##mbcmp##_##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
 530     x264_predict_##size##chroma##_##pred3##cpu2( fdec );\
 531     res[2] = x264_pixel_##mbcmp##_##size##cpu( fdec, FDEC_STRIDE, fenc, FENC_STRIDE );\
 532 }
 533
 534 INTRA_MBCMP( sad,  4x4,   v, h, dc,  ,, _c )
 535 INTRA_MBCMP(satd,  4x4,   v, h, dc,  ,, _c )
 536 INTRA_MBCMP( sad,  8x8,  dc, h,  v, c,, _c )
 537 INTRA_MBCMP(satd,  8x8,  dc, h,  v, c,, _c )
 538 INTRA_MBCMP( sad, 16x16,  v, h, dc,  ,, _c )
 539 INTRA_MBCMP(satd, 16x16,  v, h, dc,  ,, _c )
 540
 541 #if HIGH_BIT_DEPTH && HAVE_MMX
 542 INTRA_MBCMP( sad,  4x4,   v, h, dc,  , _mmx2, _c )
 543 INTRA_MBCMP(satd,  4x4,   v, h, dc,  , _mmx2, _c )
 544 INTRA_MBCMP( sad,  8x8,  dc, h,  v, c, _mmx2, _c )
 545 INTRA_MBCMP(satd,  8x8,  dc, h,  v, c, _mmx2, _c )
 546 INTRA_MBCMP( sad, 16x16,  v, h, dc,  , _mmx2, _mmx2 )
 547 INTRA_MBCMP(satd, 16x16,  v, h, dc,  , _mmx2, _mmx2 )
 548 INTRA_MBCMP( sad,  8x8,  dc, h,  v, c, _sse2, _sse2 )
 549 INTRA_MBCMP( sad, 16x16,  v, h, dc,  , _sse2, _sse2 )
 550 INTRA_MBCMP( sad,  4x4,   v, h, dc,  , _ssse3, _c )
 551 INTRA_MBCMP( sad,  8x8,  dc, h,  v, c, _ssse3, _sse2 )
 552 INTRA_MBCMP( sad, 16x16,  v, h, dc,  , _ssse3, _sse2 )
 553 #endif
 554
 555 // No C implementation of intra_satd_x9. See checkasm for its behavior,
 556 // or see x264_mb_analyse_intra for the entirely different algorithm we
 557 // use when lacking an asm implementation of it.
 558
 559
 560
 561 /****************************************************************************
 562  * structural similarity metric
 563  ****************************************************************************/
 564 static void ssim_4x4x2_core( const pixel *pix1, int stride1,
 565                              const pixel *pix2, int stride2,
 566                              int sums[2][4])
 567 {
 568     for( int z = 0; z < 2; z++ )
 569     {
 570         uint32_t s1 = 0, s2 = 0, ss = 0, s12 = 0;
 571         for( int y = 0; y < 4; y++ )
 572             for( int x = 0; x < 4; x++ )
 573             {
 574                 int a = pix1[x+y*stride1];
 575                 int b = pix2[x+y*stride2];
 576                 s1  += a;
 577                 s2  += b;
 578                 ss  += a*a;
 579                 ss  += b*b;
 580                 s12 += a*b;
 581             }
 582         sums[z][0] = s1;
 583         sums[z][1] = s2;
 584         sums[z][2] = ss;
 585         sums[z][3] = s12;
 586         pix1 += 4;
 587         pix2 += 4;
 588     }
 589 }
 590
 591 static float ssim_end1( int s1, int s2, int ss, int s12 )
 592 {
 593 /* Maximum value for 10-bit is: ss*64 = (2^10-1)^2*16*4*64 = 4286582784, which will overflow in some cases.
 594  * s1*s1, s2*s2, and s1*s2 also obtain this value for edge cases: ((2^10-1)*16*4)^2 = 4286582784.
 595  * Maximum value for 9-bit is: ss*64 = (2^9-1)^2*16*4*64 = 1069551616, which will not overflow. */
 596 #if BIT_DEPTH > 9
 597 #define type float
 598     static const float ssim_c1 = .01*.01*PIXEL_MAX*PIXEL_MAX*64;
 599     static const float ssim_c2 = .03*.03*PIXEL_MAX*PIXEL_MAX*64*63;
 600 #else
 601 #define type int
 602     static const int ssim_c1 = (int)(.01*.01*PIXEL_MAX*PIXEL_MAX*64 + .5);
 603     static const int ssim_c2 = (int)(.03*.03*PIXEL_MAX*PIXEL_MAX*64*63 + .5);
 604 #endif
 605     type fs1 = s1;
 606     type fs2 = s2;
 607     type fss = ss;
 608     type fs12 = s12;
 609     type vars = fss*64 - fs1*fs1 - fs2*fs2;
 610     type covar = fs12*64 - fs1*fs2;
 611     return (float)(2*fs1*fs2 + ssim_c1) * (float)(2*covar + ssim_c2)
 612          / ((float)(fs1*fs1 + fs2*fs2 + ssim_c1) * (float)(vars + ssim_c2));
 613 #undef type
 614 }
 615
 616 static float ssim_end4( int sum0[5][4], int sum1[5][4], int width )
 617 {
 618     float ssim = 0.0;
 619     for( int i = 0; i < width; i++ )
 620         ssim += ssim_end1( sum0[i][0] + sum0[i+1][0] + sum1[i][0] + sum1[i+1][0],
 621                            sum0[i][1] + sum0[i+1][1] + sum1[i][1] + sum1[i+1][1],
 622                            sum0[i][2] + sum0[i+1][2] + sum1[i][2] + sum1[i+1][2],
 623                            sum0[i][3] + sum0[i+1][3] + sum1[i][3] + sum1[i+1][3] );
 624     return ssim;
 625 }
 626
 627 float x264_pixel_ssim_wxh( x264_pixel_function_t *pf,
 628                            pixel *pix1, int stride1,
 629                            pixel *pix2, int stride2,
 630                            int width, int height, void *buf, int *cnt )
 631 {
 632     int z = 0;
 633     float ssim = 0.0;
 634     int (*sum0)[4] = buf;
 635     int (*sum1)[4] = sum0 + (width >> 2) + 3;
 636     width >>= 2;
 637     height >>= 2;
 638     for( int y = 1; y < height; y++ )
 639     {
 640         for( ; z <= y; z++ )
 641         {
 642             XCHG( void*, sum0, sum1 );
 643             for( int x = 0; x < width; x+=2 )
 644                 pf->ssim_4x4x2_core( &pix1[4*(x+z*stride1)], stride1, &pix2[4*(x+z*stride2)], stride2, &sum0[x] );
 645         }
 646         for( int x = 0; x < width-1; x += 4 )
 647             ssim += pf->ssim_end4( sum0+x, sum1+x, X264_MIN(4,width-x-1) );
 648     }
 649     *cnt = (height-1) * (width-1);
 650     return ssim;
 651 }
 652
 653 static int pixel_vsad( pixel *src, int stride, int height )
 654 {
 655     int score = 0;
 656     for( int i = 1; i < height; i++, src += stride )
 657         for( int j = 0; j < 16; j++ )
 658             score += abs(src[j] - src[j+stride]);
 659     return score;
 660 }
 661
 662 int x264_field_vsad( x264_t *h, int mb_x, int mb_y )
 663 {
 664     int score_field, score_frame;
 665     int stride = h->fenc->i_stride[0];
 666     int mb_stride = h->mb.i_mb_stride;
 667     pixel *fenc = h->fenc->plane[0] + 16 * (mb_x + mb_y * stride);
 668     int mb_xy = mb_x + mb_y*mb_stride;
 669
 670     /* We don't want to analyze pixels outside the frame, as it gives inaccurate results. */
 671     int mbpair_height = X264_MIN( h->param.i_height - mb_y * 16, 32 );
 672     score_frame  = h->pixf.vsad( fenc,          stride, mbpair_height );
 673     score_field  = h->pixf.vsad( fenc,        stride*2, mbpair_height >> 1 );
 674     score_field += h->pixf.vsad( fenc+stride, stride*2, mbpair_height >> 1 );
 675
 676     if( mb_x > 0 )
 677         score_field += 512 - h->mb.field[mb_xy        -1]*1024;
 678     if( mb_y > 0 )
 679         score_field += 512 - h->mb.field[mb_xy-mb_stride]*1024;
 680
 681     return (score_field < score_frame);
 682 }
 683
 684 /****************************************************************************
 685  * successive elimination
 686  ****************************************************************************/
 687 static int x264_pixel_ads4( int enc_dc[4], uint16_t *sums, int delta,
 688                             uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
 689 {
 690     int nmv = 0;
 691     for( int i = 0; i < width; i++, sums++ )
 692     {
 693         int ads = abs( enc_dc[0] - sums[0] )
 694                 + abs( enc_dc[1] - sums[8] )
 695                 + abs( enc_dc[2] - sums[delta] )
 696                 + abs( enc_dc[3] - sums[delta+8] )
 697                 + cost_mvx[i];
 698         if( ads < thresh )
 699             mvs[nmv++] = i;
 700     }
 701     return nmv;
 702 }
 703
 704 static int x264_pixel_ads2( int enc_dc[2], uint16_t *sums, int delta,
 705                             uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
 706 {
 707     int nmv = 0;
 708     for( int i = 0; i < width; i++, sums++ )
 709     {
 710         int ads = abs( enc_dc[0] - sums[0] )
 711                 + abs( enc_dc[1] - sums[delta] )
 712                 + cost_mvx[i];
 713         if( ads < thresh )
 714             mvs[nmv++] = i;
 715     }
 716     return nmv;
 717 }
 718
 719 static int x264_pixel_ads1( int enc_dc[1], uint16_t *sums, int delta,
 720                             uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
 721 {
 722     int nmv = 0;
 723     for( int i = 0; i<width; i++, sums++ )
 724     {
 725         int ads = abs( enc_dc[0] - sums[0] )
 726                 + cost_mvx[i];
 727         if( ads < thresh )
 728             mvs[nmv++] = i;
 729     }
 730     return nmv;
 731 }
 732
 733
 734 /****************************************************************************
 735  * x264_pixel_init:
 736  ****************************************************************************/
 737 void x264_pixel_init( int cpu, x264_pixel_function_t *pixf )
 738 {
 739     memset( pixf, 0, sizeof(*pixf) );
 740
 741 #define INIT2_NAME( name1, name2, cpu ) \
 742     pixf->name1[PIXEL_16x16] = x264_pixel_##name2##_16x16##cpu;\
 743     pixf->name1[PIXEL_16x8]  = x264_pixel_##name2##_16x8##cpu;
 744 #define INIT4_NAME( name1, name2, cpu ) \
 745     INIT2_NAME( name1, name2, cpu ) \
 746     pixf->name1[PIXEL_8x16]  = x264_pixel_##name2##_8x16##cpu;\
 747     pixf->name1[PIXEL_8x8]   = x264_pixel_##name2##_8x8##cpu;
 748 #define INIT5_NAME( name1, name2, cpu ) \
 749     INIT4_NAME( name1, name2, cpu ) \
 750     pixf->name1[PIXEL_8x4]   = x264_pixel_##name2##_8x4##cpu;
 751 #define INIT6_NAME( name1, name2, cpu ) \
 752     INIT5_NAME( name1, name2, cpu ) \
 753     pixf->name1[PIXEL_4x8]   = x264_pixel_##name2##_4x8##cpu;
 754 #define INIT7_NAME( name1, name2, cpu ) \
 755     INIT6_NAME( name1, name2, cpu ) \
 756     pixf->name1[PIXEL_4x4]   = x264_pixel_##name2##_4x4##cpu;
 757 #define INIT2( name, cpu ) INIT2_NAME( name, name, cpu )
 758 #define INIT4( name, cpu ) INIT4_NAME( name, name, cpu )
 759 #define INIT5( name, cpu ) INIT5_NAME( name, name, cpu )
 760 #define INIT6( name, cpu ) INIT6_NAME( name, name, cpu )
 761 #define INIT7( name, cpu ) INIT7_NAME( name, name, cpu )
 762
 763 #define INIT_ADS( cpu ) \
 764     pixf->ads[PIXEL_16x16] = x264_pixel_ads4##cpu;\
 765     pixf->ads[PIXEL_16x8] = x264_pixel_ads2##cpu;\
 766     pixf->ads[PIXEL_8x8] = x264_pixel_ads1##cpu;
 767
 768     INIT7( sad, );
 769     INIT7_NAME( sad_aligned, sad, );
 770     INIT7( sad_x3, );
 771     INIT7( sad_x4, );
 772     INIT7( ssd, );
 773     INIT7( satd, );
 774     INIT7( satd_x3, );
 775     INIT7( satd_x4, );
 776     INIT4( hadamard_ac, );
 777     INIT_ADS( );
 778
 779     pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16;
 780     pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8;
 781     pixf->var[PIXEL_16x16] = x264_pixel_var_16x16;
 782     pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8;
 783
 784     pixf->ssd_nv12_core = pixel_ssd_nv12_core;
 785     pixf->ssim_4x4x2_core = ssim_4x4x2_core;
 786     pixf->ssim_end4 = ssim_end4;
 787     pixf->var2_8x8 = pixel_var2_8x8;
 788     pixf->vsad = pixel_vsad;
 789
 790     pixf->intra_sad_x3_4x4    = x264_intra_sad_x3_4x4;
 791     pixf->intra_satd_x3_4x4   = x264_intra_satd_x3_4x4;
 792     pixf->intra_sad_x3_8x8    = x264_intra_sad_x3_8x8;
 793     pixf->intra_sa8d_x3_8x8   = x264_intra_sa8d_x3_8x8;
 794     pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c;
 795     pixf->intra_satd_x3_8x8c  = x264_intra_satd_x3_8x8c;
 796     pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16;
 797     pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16;
 798
 799 #if HIGH_BIT_DEPTH
 800 #if HAVE_MMX
 801     if( cpu&X264_CPU_MMX2 )
 802     {
 803         INIT7( sad, _mmx2 );
 804         INIT7( sad_x3, _mmx2 );
 805         INIT7( sad_x4, _mmx2 );
 806         INIT7( satd, _mmx2 );
 807         INIT7( satd_x3, _mmx2 );
 808         INIT7( satd_x4, _mmx2 );
 809         INIT4( hadamard_ac, _mmx2 );
 810         INIT7( ssd, _mmx2 );
 811         INIT_ADS( _mmx2 );
 812
 813         pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_mmx2;
 814         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_mmx2;
 815         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_mmx2;
 816         pixf->var2_8x8 = x264_pixel_var2_8x8_mmx2;
 817
 818         pixf->intra_sad_x3_4x4    = x264_intra_sad_x3_4x4_mmx2;
 819         pixf->intra_satd_x3_4x4   = x264_intra_satd_x3_4x4_mmx2;
 820         pixf->intra_sad_x3_8x8    = x264_intra_sad_x3_8x8_mmx2;
 821         pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c_mmx2;
 822         pixf->intra_satd_x3_8x8c  = x264_intra_satd_x3_8x8c_mmx2;
 823         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_mmx2;
 824         pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_mmx2;
 825     }
 826     if( cpu&X264_CPU_SSE2 )
 827     {
 828         INIT4_NAME( sad_aligned, sad, _sse2_aligned );
 829         INIT5( ssd, _sse2 );
 830
 831         pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_sse2;
 832         pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8_sse2;
 833 #if ARCH_X86_64
 834         pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_sse2;
 835 #endif
 836         pixf->ssd_nv12_core = x264_pixel_ssd_nv12_core_sse2;
 837         pixf->ssim_4x4x2_core  = x264_pixel_ssim_4x4x2_core_sse2;
 838         pixf->ssim_end4        = x264_pixel_ssim_end4_sse2;
 839         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_sse2;
 840         pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_sse2;
 841         pixf->var2_8x8 = x264_pixel_var2_8x8_sse2;
 842     }
 843     if( (cpu&X264_CPU_SSE2) && !(cpu&X264_CPU_SSE2_IS_SLOW) )
 844     {
 845         INIT5( sad, _sse2 );
 846         INIT2( sad_x3, _sse2 );
 847         INIT2( sad_x4, _sse2 );
 848         INIT_ADS( _sse2 );
 849
 850         if( !(cpu&X264_CPU_STACK_MOD4) )
 851         {
 852             INIT4( hadamard_ac, _sse2 );
 853         }
 854
 855         pixf->intra_sad_x3_8x8    = x264_intra_sad_x3_8x8_sse2;
 856         pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c_sse2;
 857         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_sse2;
 858     }
 859     if( cpu&X264_CPU_SSE2_IS_FAST )
 860     {
 861         pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
 862         pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_sse2;
 863         pixf->sad_x3[PIXEL_8x8]  = x264_pixel_sad_x3_8x8_sse2;
 864         pixf->sad_x3[PIXEL_8x4]  = x264_pixel_sad_x3_8x4_sse2;
 865         pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_sse2;
 866         pixf->sad_x4[PIXEL_8x8]  = x264_pixel_sad_x4_8x8_sse2;
 867         pixf->sad_x4[PIXEL_8x4]  = x264_pixel_sad_x4_8x4_sse2;
 868     }
 869     if( cpu&X264_CPU_SSSE3 )
 870     {
 871         INIT4_NAME( sad_aligned, sad, _ssse3_aligned );
 872         INIT7( sad, _ssse3 );
 873         INIT7( sad_x3, _ssse3 );
 874         INIT7( sad_x4, _ssse3 );
 875         INIT_ADS( _ssse3 );
 876
 877         if( !(cpu&X264_CPU_STACK_MOD4) )
 878         {
 879             INIT4( hadamard_ac, _ssse3 );
 880         }
 881
 882         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_ssse3;
 883         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_ssse3;
 884         pixf->intra_sad_x3_4x4    = x264_intra_sad_x3_4x4_ssse3;
 885         pixf->intra_sad_x3_8x8    = x264_intra_sad_x3_8x8_ssse3;
 886         pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c_ssse3;
 887         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_ssse3;
 888     }
 889     if( cpu&X264_CPU_SSE4 )
 890     {
 891         if( !(cpu&X264_CPU_STACK_MOD4) )
 892         {
 893             INIT4( hadamard_ac, _sse4 );
 894         }
 895         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_sse4;
 896         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_sse4;
 897     }
 898     if( cpu&X264_CPU_AVX )
 899     {
 900         INIT_ADS( _avx );
 901         if( !(cpu&X264_CPU_STACK_MOD4) )
 902         {
 903             INIT4( hadamard_ac, _avx );
 904         }
 905         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_avx;
 906         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_avx;
 907         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_avx;
 908         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_avx;
 909         pixf->ssd_nv12_core    = x264_pixel_ssd_nv12_core_avx;
 910         pixf->ssim_4x4x2_core  = x264_pixel_ssim_4x4x2_core_avx;
 911         pixf->ssim_end4        = x264_pixel_ssim_end4_avx;
 912     }
 913 #endif // HAVE_MMX
 914 #else // !HIGH_BIT_DEPTH
 915 #if HAVE_MMX
 916     if( cpu&X264_CPU_MMX )
 917     {
 918         INIT7( ssd, _mmx );
 919     }
 920
 921     if( cpu&X264_CPU_MMX2 )
 922     {
 923         INIT7( sad, _mmx2 );
 924         INIT7_NAME( sad_aligned, sad, _mmx2 );
 925         INIT7( sad_x3, _mmx2 );
 926         INIT7( sad_x4, _mmx2 );
 927         INIT7( satd, _mmx2 );
 928         INIT7( satd_x3, _mmx2 );
 929         INIT7( satd_x4, _mmx2 );
 930         INIT4( hadamard_ac, _mmx2 );
 931         INIT_ADS( _mmx2 );
 932         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_mmx2;
 933         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_mmx2;
 934         pixf->ssd_nv12_core    = x264_pixel_ssd_nv12_core_mmx2;
 935 #if ARCH_X86
 936         pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_mmx2;
 937         pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8_mmx2;
 938         pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_mmx2;
 939         pixf->ssim_4x4x2_core = x264_pixel_ssim_4x4x2_core_mmx2;
 940         pixf->var2_8x8 = x264_pixel_var2_8x8_mmx2;
 941         pixf->vsad = x264_pixel_vsad_mmx2;
 942
 943         if( cpu&X264_CPU_CACHELINE_32 )
 944         {
 945             INIT5( sad, _cache32_mmx2 );
 946             INIT4( sad_x3, _cache32_mmx2 );
 947             INIT4( sad_x4, _cache32_mmx2 );
 948         }
 949         else if( cpu&X264_CPU_CACHELINE_64 )
 950         {
 951             INIT5( sad, _cache64_mmx2 );
 952             INIT4( sad_x3, _cache64_mmx2 );
 953             INIT4( sad_x4, _cache64_mmx2 );
 954         }
 955 #else
 956         if( cpu&X264_CPU_CACHELINE_64 )
 957         {
 958             pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_cache64_mmx2;
 959             pixf->sad[PIXEL_8x8]  = x264_pixel_sad_8x8_cache64_mmx2;
 960             pixf->sad[PIXEL_8x4]  = x264_pixel_sad_8x4_cache64_mmx2;
 961             pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_mmx2;
 962             pixf->sad_x3[PIXEL_8x8]  = x264_pixel_sad_x3_8x8_cache64_mmx2;
 963             pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_mmx2;
 964             pixf->sad_x4[PIXEL_8x8]  = x264_pixel_sad_x4_8x8_cache64_mmx2;
 965         }
 966 #endif
 967         pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_mmx2;
 968         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_mmx2;
 969         pixf->intra_satd_x3_8x8c  = x264_intra_satd_x3_8x8c_mmx2;
 970         pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c_mmx2;
 971         pixf->intra_sad_x3_8x8    = x264_intra_sad_x3_8x8_mmx2;
 972         pixf->intra_satd_x3_4x4   = x264_intra_satd_x3_4x4_mmx2;
 973         pixf->intra_sad_x3_4x4    = x264_intra_sad_x3_4x4_mmx2;
 974     }
 975
 976     if( cpu&X264_CPU_SSE2 )
 977     {
 978         INIT5( ssd, _sse2slow );
 979         INIT2_NAME( sad_aligned, sad, _sse2_aligned );
 980         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_sse2;
 981         pixf->ssd_nv12_core    = x264_pixel_ssd_nv12_core_sse2;
 982         pixf->ssim_4x4x2_core  = x264_pixel_ssim_4x4x2_core_sse2;
 983         pixf->ssim_end4        = x264_pixel_ssim_end4_sse2;
 984         pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_sse2;
 985         pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8_sse2;
 986 #if ARCH_X86_64
 987         pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_sse2;
 988 #endif
 989         pixf->var2_8x8 = x264_pixel_var2_8x8_sse2;
 990         pixf->vsad = x264_pixel_vsad_sse2;
 991     }
 992
 993     if( (cpu&X264_CPU_SSE2) && !(cpu&X264_CPU_SSE2_IS_SLOW) )
 994     {
 995         INIT2( sad, _sse2 );
 996         INIT2( sad_x3, _sse2 );
 997         INIT2( sad_x4, _sse2 );
 998         INIT6( satd, _sse2 );
 999         INIT6( satd_x3, _sse2 );
1000         INIT6( satd_x4, _sse2 );
1001         if( !(cpu&X264_CPU_STACK_MOD4) )
1002         {
1003             INIT4( hadamard_ac, _sse2 );
1004         }
1005         INIT_ADS( _sse2 );
1006         pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_sse2;
1007         pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_sse2;
1008         if( cpu&X264_CPU_CACHELINE_64 )
1009         {
1010             INIT2( ssd, _sse2); /* faster for width 16 on p4 */
1011 #if ARCH_X86
1012             INIT2( sad, _cache64_sse2 );
1013             INIT2( sad_x3, _cache64_sse2 );
1014             INIT2( sad_x4, _cache64_sse2 );
1015 #endif
1016            if( cpu&X264_CPU_SSE2_IS_FAST )
1017            {
1018                pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_sse2;
1019                pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_sse2;
1020            }
1021         }
1022
1023         if( cpu&X264_CPU_SSE_MISALIGN )
1024         {
1025             INIT2( sad_x3, _sse2_misalign );
1026             INIT2( sad_x4, _sse2_misalign );
1027         }
1028     }
1029
1030     if( cpu&X264_CPU_SSE2_IS_FAST && !(cpu&X264_CPU_CACHELINE_64) )
1031     {
1032         pixf->sad_aligned[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
1033         pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
1034         pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_sse2;
1035         pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_sse2;
1036         pixf->sad_x3[PIXEL_8x4] = x264_pixel_sad_x3_8x4_sse2;
1037         pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_sse2;
1038         pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_sse2;
1039         pixf->sad_x4[PIXEL_8x4] = x264_pixel_sad_x4_8x4_sse2;
1040     }
1041
1042     if( (cpu&X264_CPU_SSE3) && (cpu&X264_CPU_CACHELINE_64) )
1043     {
1044         INIT2( sad, _sse3 );
1045         INIT2( sad_x3, _sse3 );
1046         INIT2( sad_x4, _sse3 );
1047     }
1048
1049     if( cpu&X264_CPU_SSSE3 )
1050     {
1051         if( !(cpu&X264_CPU_STACK_MOD4) )
1052         {
1053             INIT4( hadamard_ac, _ssse3 );
1054             pixf->intra_sad_x9_4x4  = x264_intra_sad_x9_4x4_ssse3;
1055             pixf->intra_satd_x9_4x4 = x264_intra_satd_x9_4x4_ssse3;
1056         }
1057         INIT_ADS( _ssse3 );
1058         if( !(cpu&X264_CPU_SLOW_ATOM) )
1059         {
1060             INIT7( ssd, _ssse3 );
1061             pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_ssse3;
1062             pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_ssse3;
1063             INIT7( satd, _ssse3 );
1064             INIT7( satd_x3, _ssse3 );
1065             INIT7( satd_x4, _ssse3 );
1066         }
1067         pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_ssse3;
1068         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_ssse3;
1069         pixf->intra_satd_x3_8x8c  = x264_intra_satd_x3_8x8c_ssse3;
1070         pixf->intra_sad_x3_8x8c   = x264_intra_sad_x3_8x8c_ssse3;
1071         pixf->intra_satd_x3_4x4   = x264_intra_satd_x3_4x4_ssse3;
1072 #if ARCH_X86_64
1073         pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_ssse3;
1074 #endif
1075         pixf->var2_8x8 = x264_pixel_var2_8x8_ssse3;
1076         if( cpu&X264_CPU_SHUFFLE_IS_FAST )
1077             pixf->intra_sad_x3_8x8  = x264_intra_sad_x3_8x8_ssse3;
1078         if( cpu&X264_CPU_CACHELINE_64 )
1079         {
1080             INIT2( sad, _cache64_ssse3 );
1081             INIT2( sad_x3, _cache64_ssse3 );
1082             INIT2( sad_x4, _cache64_ssse3 );
1083         }
1084         if( cpu&X264_CPU_SLOW_ATOM || !(cpu&X264_CPU_SHUFFLE_IS_FAST) )
1085         {
1086             INIT5( ssd, _sse2 ); /* on conroe, sse2 is faster for width8/16 */
1087         }
1088     }
1089
1090     if( cpu&X264_CPU_SSE4 )
1091     {
1092         INIT7( satd, _sse4 );
1093         INIT7( satd_x3, _sse4 );
1094         INIT7( satd_x4, _sse4 );
1095         if( !(cpu&X264_CPU_STACK_MOD4) )
1096         {
1097             INIT4( hadamard_ac, _sse4 );
1098             pixf->intra_sad_x9_4x4  = x264_intra_sad_x9_4x4_sse4;
1099             pixf->intra_satd_x9_4x4 = x264_intra_satd_x9_4x4_sse4;
1100         }
1101         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_sse4;
1102         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_sse4;
1103         pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_sse4;
1104     }
1105
1106     if( cpu&X264_CPU_AVX )
1107     {
1108         INIT7( satd, _avx );
1109         INIT7( satd_x3, _avx );
1110         INIT7( satd_x4, _avx );
1111         INIT_ADS( _avx );
1112         if( !(cpu&X264_CPU_STACK_MOD4) )
1113         {
1114             INIT4( hadamard_ac, _avx );
1115             pixf->intra_sad_x9_4x4  = x264_intra_sad_x9_4x4_avx;
1116             pixf->intra_satd_x9_4x4 = x264_intra_satd_x9_4x4_avx;
1117         }
1118         INIT5( ssd, _avx );
1119 #if ARCH_X86_64
1120         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_avx;
1121         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_avx;
1122         pixf->intra_sa8d_x3_8x8= x264_intra_sa8d_x3_8x8_avx;
1123 #endif
1124         pixf->ssd_nv12_core    = x264_pixel_ssd_nv12_core_avx;
1125         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_avx;
1126         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_avx;
1127         pixf->ssim_4x4x2_core  = x264_pixel_ssim_4x4x2_core_avx;
1128         pixf->ssim_end4        = x264_pixel_ssim_end4_avx;
1129         pixf->intra_sad_x3_4x4 = x264_intra_sad_x3_4x4_avx;
1130         pixf->intra_sad_x3_8x8 = x264_intra_sad_x3_8x8_avx;
1131     }
1132 #endif //HAVE_MMX
1133
1134 #if HAVE_ARMV6
1135     if( cpu&X264_CPU_ARMV6 )
1136     {
1137         pixf->sad[PIXEL_4x8] = x264_pixel_sad_4x8_armv6;
1138         pixf->sad[PIXEL_4x4] = x264_pixel_sad_4x4_armv6;
1139         pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_4x8_armv6;
1140         pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_4x4_armv6;
1141     }
1142     if( cpu&X264_CPU_NEON )
1143     {
1144         INIT5( sad, _neon );
1145         INIT5( sad_aligned, _neon );
1146         INIT7( sad_x3, _neon );
1147         INIT7( sad_x4, _neon );
1148         INIT7( ssd, _neon );
1149         INIT7( satd, _neon );
1150         INIT7( satd_x3, _neon );
1151         INIT7( satd_x4, _neon );
1152         INIT4( hadamard_ac, _neon );
1153         pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8_neon;
1154         pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_neon;
1155         pixf->var[PIXEL_8x8]    = x264_pixel_var_8x8_neon;
1156         pixf->var[PIXEL_16x16]  = x264_pixel_var_16x16_neon;
1157         pixf->var2_8x8          = x264_pixel_var2_8x8_neon;
1158
1159         pixf->ssim_4x4x2_core   = x264_pixel_ssim_4x4x2_core_neon;
1160         pixf->ssim_end4         = x264_pixel_ssim_end4_neon;
1161
1162         if( cpu&X264_CPU_FAST_NEON_MRC )
1163         {
1164             pixf->sad[PIXEL_4x8] = x264_pixel_sad_4x8_neon;
1165             pixf->sad[PIXEL_4x4] = x264_pixel_sad_4x4_neon;
1166             pixf->sad_aligned[PIXEL_4x8] = x264_pixel_sad_aligned_4x8_neon;
1167             pixf->sad_aligned[PIXEL_4x4] = x264_pixel_sad_aligned_4x4_neon;
1168         }
1169         else    // really just scheduled for dual issue / A8
1170         {
1171             INIT5( sad_aligned, _neon_dual );
1172         }
1173     }
1174 #endif
1175 #endif // HIGH_BIT_DEPTH
1176 #if HAVE_ALTIVEC
1177     if( cpu&X264_CPU_ALTIVEC )
1178     {
1179         x264_pixel_altivec_init( pixf );
1180     }
1181 #endif
1182 #if !HIGH_BIT_DEPTH
1183 #if ARCH_UltraSPARC
1184     INIT4( sad, _vis );
1185     INIT4( sad_x3, _vis );
1186     INIT4( sad_x4, _vis );
1187 #endif
1188 #endif // !HIGH_BIT_DEPTH
1189
1190     pixf->ads[PIXEL_8x16] =
1191     pixf->ads[PIXEL_8x4] =
1192     pixf->ads[PIXEL_4x8] = pixf->ads[PIXEL_16x8];
1193     pixf->ads[PIXEL_4x4] = pixf->ads[PIXEL_8x8];
1194 }
1195