common/pixel.c

   1 /*****************************************************************************
   2  * pixel.c: h264 encoder
   3  *****************************************************************************
   4  * Copyright (C) 2003-2008 x264 project
   5  *
   6  * Authors: Loren Merritt <lorenm@u.washington.edu>
   7  *          Laurent Aimar <fenrir@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 #include "common.h"
  25
  26 #ifdef HAVE_MMX
  27 #   include "x86/pixel.h"
  28 #endif
  29 #ifdef ARCH_PPC
  30 #   include "ppc/pixel.h"
  31 #endif
  32 #ifdef ARCH_UltraSparc
  33 #   include "sparc/pixel.h"
  34 #endif
  35
  36
  37 /****************************************************************************
  38  * pixel_sad_WxH
  39  ****************************************************************************/
  40 #define PIXEL_SAD_C( name, lx, ly ) \
  41 static int name( uint8_t *pix1, int i_stride_pix1,  \
  42                  uint8_t *pix2, int i_stride_pix2 ) \
  43 {                                                   \
  44     int i_sum = 0;                                  \
  45     int x, y;                                       \
  46     for( y = 0; y < ly; y++ )                       \
  47     {                                               \
  48         for( x = 0; x < lx; x++ )                   \
  49         {                                           \
  50             i_sum += abs( pix1[x] - pix2[x] );      \
  51         }                                           \
  52         pix1 += i_stride_pix1;                      \
  53         pix2 += i_stride_pix2;                      \
  54     }                                               \
  55     return i_sum;                                   \
  56 }
  57
  58
  59 PIXEL_SAD_C( x264_pixel_sad_16x16, 16, 16 )
  60 PIXEL_SAD_C( x264_pixel_sad_16x8,  16,  8 )
  61 PIXEL_SAD_C( x264_pixel_sad_8x16,   8, 16 )
  62 PIXEL_SAD_C( x264_pixel_sad_8x8,    8,  8 )
  63 PIXEL_SAD_C( x264_pixel_sad_8x4,    8,  4 )
  64 PIXEL_SAD_C( x264_pixel_sad_4x8,    4,  8 )
  65 PIXEL_SAD_C( x264_pixel_sad_4x4,    4,  4 )
  66
  67
  68 /****************************************************************************
  69  * pixel_ssd_WxH
  70  ****************************************************************************/
  71 #define PIXEL_SSD_C( name, lx, ly ) \
  72 static int name( uint8_t *pix1, int i_stride_pix1,  \
  73                  uint8_t *pix2, int i_stride_pix2 ) \
  74 {                                                   \
  75     int i_sum = 0;                                  \
  76     int x, y;                                       \
  77     for( y = 0; y < ly; y++ )                       \
  78     {                                               \
  79         for( x = 0; x < lx; x++ )                   \
  80         {                                           \
  81             int d = pix1[x] - pix2[x];              \
  82             i_sum += d*d;                           \
  83         }                                           \
  84         pix1 += i_stride_pix1;                      \
  85         pix2 += i_stride_pix2;                      \
  86     }                                               \
  87     return i_sum;                                   \
  88 }
  89
  90 PIXEL_SSD_C( x264_pixel_ssd_16x16, 16, 16 )
  91 PIXEL_SSD_C( x264_pixel_ssd_16x8,  16,  8 )
  92 PIXEL_SSD_C( x264_pixel_ssd_8x16,   8, 16 )
  93 PIXEL_SSD_C( x264_pixel_ssd_8x8,    8,  8 )
  94 PIXEL_SSD_C( x264_pixel_ssd_8x4,    8,  4 )
  95 PIXEL_SSD_C( x264_pixel_ssd_4x8,    4,  8 )
  96 PIXEL_SSD_C( x264_pixel_ssd_4x4,    4,  4 )
  97
  98 int64_t x264_pixel_ssd_wxh( x264_pixel_function_t *pf, uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2, int i_width, int i_height )
  99 {
 100     int64_t i_ssd = 0;
 101     int x, y;
 102     int align = !(((long)pix1 | (long)pix2 | i_pix1 | i_pix2) & 15);
 103
 104 #define SSD(size) i_ssd += pf->ssd[size]( pix1 + y*i_pix1 + x, i_pix1, \
 105                                           pix2 + y*i_pix2 + x, i_pix2 );
 106     for( y = 0; y < i_height-15; y += 16 )
 107     {
 108         x = 0;
 109         if( align )
 110             for( ; x < i_width-15; x += 16 )
 111                 SSD(PIXEL_16x16);
 112         for( ; x < i_width-7; x += 8 )
 113             SSD(PIXEL_8x16);
 114     }
 115     if( y < i_height-7 )
 116         for( x = 0; x < i_width-7; x += 8 )
 117             SSD(PIXEL_8x8);
 118 #undef SSD
 119
 120 #define SSD1 { int d = pix1[y*i_pix1+x] - pix2[y*i_pix2+x]; i_ssd += d*d; }
 121     if( i_width % 8 != 0 )
 122     {
 123         for( y = 0; y < (i_height & ~7); y++ )
 124             for( x = i_width & ~7; x < i_width; x++ )
 125                 SSD1;
 126     }
 127     if( i_height % 8 != 0 )
 128     {
 129         for( y = i_height & ~7; y < i_height; y++ )
 130             for( x = 0; x < i_width; x++ )
 131                 SSD1;
 132     }
 133 #undef SSD1
 134
 135     return i_ssd;
 136 }
 137
 138
 139 /****************************************************************************
 140  * pixel_var_wxh
 141  ****************************************************************************/
 142 #define PIXEL_VAR_C( name, w, shift ) \
 143 static int name( uint8_t *pix, int i_stride, uint32_t *sad ) \
 144 {                                             \
 145     uint32_t var = 0, sum = 0, sqr = 0;       \
 146     int x, y;                                 \
 147     for( y = 0; y < w; y++ )                  \
 148     {                                         \
 149         for( x = 0; x < w; x++ )              \
 150         {                                     \
 151             sum += pix[x];                    \
 152             sqr += pix[x] * pix[x];           \
 153         }                                     \
 154         pix += i_stride;                      \
 155     }                                         \
 156     var = sqr - (sum * sum >> shift);         \
 157     *sad = sum;                               \
 158     return var;                               \
 159 }
 160
 161 PIXEL_VAR_C( x264_pixel_var_16x16, 16, 8 )
 162 PIXEL_VAR_C( x264_pixel_var_8x8,    8, 6 )
 163
 164
 165 #define HADAMARD4(d0,d1,d2,d3,s0,s1,s2,s3) {\
 166     int t0 = s0 + s1;\
 167     int t1 = s0 - s1;\
 168     int t2 = s2 + s3;\
 169     int t3 = s2 - s3;\
 170     d0 = t0 + t2;\
 171     d2 = t0 - t2;\
 172     d1 = t1 + t3;\
 173     d3 = t1 - t3;\
 174 }
 175
 176 /****************************************************************************
 177  * pixel_satd_WxH: sum of 4x4 Hadamard transformed differences
 178  ****************************************************************************/
 179 static int pixel_satd_wxh( uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2, int i_width, int i_height )
 180 {
 181     int16_t tmp[4][4];
 182     int x, y;
 183     int i_satd = 0;
 184
 185     for( y = 0; y < i_height; y += 4 )
 186     {
 187         for( x = 0; x < i_width; x += 4 )
 188         {
 189             int i;
 190             uint8_t *p1 = pix1+x, *p2 = pix2+x;
 191
 192             for( i=0; i<4; i++, p1+=i_pix1, p2+=i_pix2 )
 193             {
 194                 int a0 = p1[0] - p2[0];
 195                 int a1 = p1[1] - p2[1];
 196                 int a2 = p1[2] - p2[2];
 197                 int a3 = p1[3] - p2[3];
 198                 HADAMARD4( tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3], a0,a1,a2,a3 );
 199             }
 200             for( i=0; i<4; i++ )
 201             {
 202                 int a0,a1,a2,a3;
 203                 HADAMARD4( a0,a1,a2,a3, tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i] );
 204                 i_satd += abs(a0) + abs(a1) + abs(a2) + abs(a3);
 205             }
 206
 207         }
 208         pix1 += 4 * i_pix1;
 209         pix2 += 4 * i_pix2;
 210     }
 211
 212     return i_satd / 2;
 213 }
 214 #define PIXEL_SATD_C( name, width, height ) \
 215 static int name( uint8_t *pix1, int i_stride_pix1, \
 216                  uint8_t *pix2, int i_stride_pix2 ) \
 217 { \
 218     return pixel_satd_wxh( pix1, i_stride_pix1, pix2, i_stride_pix2, width, height ); \
 219 }
 220 PIXEL_SATD_C( x264_pixel_satd_16x16, 16, 16 )
 221 PIXEL_SATD_C( x264_pixel_satd_16x8,  16, 8 )
 222 PIXEL_SATD_C( x264_pixel_satd_8x16,  8, 16 )
 223 PIXEL_SATD_C( x264_pixel_satd_8x8,   8, 8 )
 224 PIXEL_SATD_C( x264_pixel_satd_8x4,   8, 4 )
 225 PIXEL_SATD_C( x264_pixel_satd_4x8,   4, 8 )
 226 PIXEL_SATD_C( x264_pixel_satd_4x4,   4, 4 )
 227
 228
 229 /****************************************************************************
 230  * pixel_sa8d_WxH: sum of 8x8 Hadamard transformed differences
 231  ****************************************************************************/
 232 #define SA8D_1D {\
 233     int b0,b1,b2,b3,b4,b5,b6,b7;\
 234     HADAMARD4( b0,b1,b2,b3, SRC(0), SRC(1), SRC(2), SRC(3) );\
 235     HADAMARD4( b4,b5,b6,b7, SRC(4), SRC(5), SRC(6), SRC(7) );\
 236     DST(0, b0 + b4);\
 237     DST(4, b0 - b4);\
 238     DST(1, b1 + b5);\
 239     DST(5, b1 - b5);\
 240     DST(2, b2 + b6);\
 241     DST(6, b2 - b6);\
 242     DST(3, b3 + b7);\
 243     DST(7, b3 - b7);\
 244 }
 245
 246 static inline int pixel_sa8d_wxh( uint8_t *pix1, int i_pix1, uint8_t *pix2, int i_pix2,
 247                                   int i_width, int i_height )
 248 {
 249     int16_t diff[8][8];
 250     int i_satd = 0;
 251     int x, y;
 252
 253     for( y = 0; y < i_height; y += 8 )
 254     {
 255         for( x = 0; x < i_width; x += 8 )
 256         {
 257             int i;
 258             uint8_t *p1 = pix1+x, *p2 = pix2+x;
 259
 260 #define SRC(x)     a##x
 261 #define DST(x,rhs) diff[i][x] = (rhs)
 262             for( i=0; i<8; i++, p1+=i_pix1, p2+=i_pix2 )
 263             {
 264                 int a0 = p1[0] - p2[0];
 265                 int a1 = p1[1] - p2[1];
 266                 int a2 = p1[2] - p2[2];
 267                 int a3 = p1[3] - p2[3];
 268                 int a4 = p1[4] - p2[4];
 269                 int a5 = p1[5] - p2[5];
 270                 int a6 = p1[6] - p2[6];
 271                 int a7 = p1[7] - p2[7];
 272                 SA8D_1D
 273             }
 274 #undef SRC
 275 #undef DST
 276
 277 #define SRC(x)     diff[x][i]
 278 #define DST(x,rhs) i_satd += abs(rhs)
 279             for( i=0; i<8; i++ )
 280                 SA8D_1D
 281 #undef SRC
 282 #undef DST
 283         }
 284         pix1 += 8 * i_pix1;
 285         pix2 += 8 * i_pix2;
 286     }
 287
 288     return i_satd;
 289 }
 290
 291 #define PIXEL_SA8D_C( width, height ) \
 292 static int x264_pixel_sa8d_##width##x##height( uint8_t *pix1, int i_stride_pix1, \
 293                                                uint8_t *pix2, int i_stride_pix2 ) \
 294 { \
 295     return ( pixel_sa8d_wxh( pix1, i_stride_pix1, pix2, i_stride_pix2, width, height ) + 2 ) >> 2; \
 296 }
 297 PIXEL_SA8D_C( 16, 16 )
 298 PIXEL_SA8D_C( 16, 8 )
 299 PIXEL_SA8D_C( 8, 16 )
 300 PIXEL_SA8D_C( 8, 8 )
 301
 302
 303 static uint64_t pixel_hadamard_ac( uint8_t *pix, int stride )
 304 {
 305     int16_t tmp[8][8];
 306     int sum4=0, sum8=0;
 307     int i;
 308     for( i=0; i<8; i++, pix+=stride )
 309     {
 310         HADAMARD4( tmp[0][i], tmp[1][i], tmp[2][i], tmp[3][i],
 311                    pix[0], pix[1], pix[2], pix[3] );
 312         HADAMARD4( tmp[4][i], tmp[5][i], tmp[6][i], tmp[7][i],
 313                    pix[4], pix[5], pix[6], pix[7] );
 314     }
 315     for( i=0; i<8; i++ )
 316     {
 317         int a0,a1,a2,a3,a4,a5,a6,a7;
 318         HADAMARD4( a0,a1,a2,a3, tmp[i][0], tmp[i][1], tmp[i][2], tmp[i][3] );
 319         sum4 += abs(a0) + abs(a1) + abs(a2) + abs(a3);
 320         HADAMARD4( a4,a5,a6,a7, tmp[i][4], tmp[i][5], tmp[i][6], tmp[i][7] );
 321         sum4 += abs(a4) + abs(a5) + abs(a6) + abs(a7);
 322         tmp[i][0] = a0 + a4;
 323         tmp[i][4] = a0 - a4;
 324         tmp[i][1] = a1 + a5;
 325         tmp[i][5] = a1 - a5;
 326         tmp[i][2] = a2 + a6;
 327         tmp[i][6] = a2 - a6;
 328         tmp[i][3] = a3 + a7;
 329         tmp[i][7] = a3 - a7;
 330     }
 331     for( i=0; i<8; i++ )
 332     {
 333         sum8 += abs( tmp[0][i] + tmp[4][i] )
 334               + abs( tmp[0][i] - tmp[4][i] )
 335               + abs( tmp[1][i] + tmp[5][i] )
 336               + abs( tmp[1][i] - tmp[5][i] )
 337               + abs( tmp[2][i] + tmp[6][i] )
 338               + abs( tmp[2][i] - tmp[6][i] )
 339               + abs( tmp[3][i] + tmp[7][i] )
 340               + abs( tmp[3][i] - tmp[7][i] );
 341     }
 342     sum4 -= tmp[0][0]+tmp[4][0];
 343     sum8 -= tmp[0][0]+tmp[4][0];
 344     return ((uint64_t)sum8<<32) + sum4;
 345 }
 346
 347 #define HADAMARD_AC(w,h) \
 348 static uint64_t x264_pixel_hadamard_ac_##w##x##h( uint8_t *pix, int stride )\
 349 {\
 350     uint64_t sum = pixel_hadamard_ac( pix, stride );\
 351     if( w==16 )\
 352         sum += pixel_hadamard_ac( pix+8, stride );\
 353     if( h==16 )\
 354         sum += pixel_hadamard_ac( pix+8*stride, stride );\
 355     if( w==16 && h==16 )\
 356         sum += pixel_hadamard_ac( pix+8*stride+8, stride );\
 357     return ((sum>>34)<<32) + ((uint32_t)sum>>1);\
 358 }
 359 HADAMARD_AC( 16, 16 )
 360 HADAMARD_AC( 16, 8 )
 361 HADAMARD_AC( 8, 16 )
 362 HADAMARD_AC( 8, 8 )
 363
 364
 365 /****************************************************************************
 366  * pixel_sad_x4
 367  ****************************************************************************/
 368 #define SAD_X( size ) \
 369 static void x264_pixel_sad_x3_##size( uint8_t *fenc, uint8_t *pix0, uint8_t *pix1, uint8_t *pix2, int i_stride, int scores[3] )\
 370 {\
 371     scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
 372     scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
 373     scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
 374 }\
 375 static void x264_pixel_sad_x4_##size( uint8_t *fenc, uint8_t *pix0, uint8_t *pix1, uint8_t *pix2, uint8_t *pix3, int i_stride, int scores[4] )\
 376 {\
 377     scores[0] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix0, i_stride );\
 378     scores[1] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix1, i_stride );\
 379     scores[2] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix2, i_stride );\
 380     scores[3] = x264_pixel_sad_##size( fenc, FENC_STRIDE, pix3, i_stride );\
 381 }
 382
 383 SAD_X( 16x16 )
 384 SAD_X( 16x8 )
 385 SAD_X( 8x16 )
 386 SAD_X( 8x8 )
 387 SAD_X( 8x4 )
 388 SAD_X( 4x8 )
 389 SAD_X( 4x4 )
 390
 391 #ifdef ARCH_UltraSparc
 392 SAD_X( 16x16_vis )
 393 SAD_X( 16x8_vis )
 394 SAD_X( 8x16_vis )
 395 SAD_X( 8x8_vis )
 396 #endif
 397
 398 /****************************************************************************
 399  * pixel_satd_x4
 400  * no faster than single satd, but needed for satd to be a drop-in replacement for sad
 401  ****************************************************************************/
 402
 403 #define SATD_X( size, cpu ) \
 404 static void x264_pixel_satd_x3_##size##cpu( uint8_t *fenc, uint8_t *pix0, uint8_t *pix1, uint8_t *pix2, int i_stride, int scores[3] )\
 405 {\
 406     scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
 407     scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
 408     scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
 409 }\
 410 static void x264_pixel_satd_x4_##size##cpu( uint8_t *fenc, uint8_t *pix0, uint8_t *pix1, uint8_t *pix2, uint8_t *pix3, int i_stride, int scores[4] )\
 411 {\
 412     scores[0] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix0, i_stride );\
 413     scores[1] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix1, i_stride );\
 414     scores[2] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix2, i_stride );\
 415     scores[3] = x264_pixel_satd_##size##cpu( fenc, FENC_STRIDE, pix3, i_stride );\
 416 }
 417 #define SATD_X_DECL6( cpu )\
 418 SATD_X( 16x16, cpu )\
 419 SATD_X( 16x8, cpu )\
 420 SATD_X( 8x16, cpu )\
 421 SATD_X( 8x8, cpu )\
 422 SATD_X( 8x4, cpu )\
 423 SATD_X( 4x8, cpu )
 424 #define SATD_X_DECL7( cpu )\
 425 SATD_X_DECL6( cpu )\
 426 SATD_X( 4x4, cpu )
 427
 428 SATD_X_DECL7()
 429 #ifdef HAVE_MMX
 430 SATD_X_DECL7( _mmxext )
 431 SATD_X_DECL6( _sse2 )
 432 SATD_X_DECL7( _ssse3 )
 433 SATD_X_DECL6( _ssse3_phadd )
 434 #endif
 435
 436 /****************************************************************************
 437  * structural similarity metric
 438  ****************************************************************************/
 439 static void ssim_4x4x2_core( const uint8_t *pix1, int stride1,
 440                              const uint8_t *pix2, int stride2,
 441                              int sums[2][4])
 442 {
 443     int x, y, z;
 444     for(z=0; z<2; z++)
 445     {
 446         uint32_t s1=0, s2=0, ss=0, s12=0;
 447         for(y=0; y<4; y++)
 448             for(x=0; x<4; x++)
 449             {
 450                 int a = pix1[x+y*stride1];
 451                 int b = pix2[x+y*stride2];
 452                 s1  += a;
 453                 s2  += b;
 454                 ss  += a*a;
 455                 ss  += b*b;
 456                 s12 += a*b;
 457             }
 458         sums[z][0] = s1;
 459         sums[z][1] = s2;
 460         sums[z][2] = ss;
 461         sums[z][3] = s12;
 462         pix1 += 4;
 463         pix2 += 4;
 464     }
 465 }
 466
 467 static float ssim_end1( int s1, int s2, int ss, int s12 )
 468 {
 469     static const int ssim_c1 = (int)(.01*.01*255*255*64 + .5);
 470     static const int ssim_c2 = (int)(.03*.03*255*255*64*63 + .5);
 471     int vars = ss*64 - s1*s1 - s2*s2;
 472     int covar = s12*64 - s1*s2;
 473     return (float)(2*s1*s2 + ssim_c1) * (float)(2*covar + ssim_c2)\
 474            / ((float)(s1*s1 + s2*s2 + ssim_c1) * (float)(vars + ssim_c2));
 475 }
 476
 477 static float ssim_end4( int sum0[5][4], int sum1[5][4], int width )
 478 {
 479     int i;
 480     float ssim = 0.0;
 481     for( i = 0; i < width; i++ )
 482         ssim += ssim_end1( sum0[i][0] + sum0[i+1][0] + sum1[i][0] + sum1[i+1][0],
 483                            sum0[i][1] + sum0[i+1][1] + sum1[i][1] + sum1[i+1][1],
 484                            sum0[i][2] + sum0[i+1][2] + sum1[i][2] + sum1[i+1][2],
 485                            sum0[i][3] + sum0[i+1][3] + sum1[i][3] + sum1[i+1][3] );
 486     return ssim;
 487 }
 488
 489 float x264_pixel_ssim_wxh( x264_pixel_function_t *pf,
 490                            uint8_t *pix1, int stride1,
 491                            uint8_t *pix2, int stride2,
 492                            int width, int height )
 493 {
 494     int x, y, z;
 495     float ssim = 0.0;
 496     int (*sum0)[4] = x264_malloc(4 * (width/4+3) * sizeof(int));
 497     int (*sum1)[4] = x264_malloc(4 * (width/4+3) * sizeof(int));
 498     width >>= 2;
 499     height >>= 2;
 500     z = 0;
 501     for( y = 1; y < height; y++ )
 502     {
 503         for( ; z <= y; z++ )
 504         {
 505             XCHG( void*, sum0, sum1 );
 506             for( x = 0; x < width; x+=2 )
 507                 pf->ssim_4x4x2_core( &pix1[4*(x+z*stride1)], stride1, &pix2[4*(x+z*stride2)], stride2, &sum0[x] );
 508         }
 509         for( x = 0; x < width-1; x += 4 )
 510             ssim += pf->ssim_end4( sum0+x, sum1+x, X264_MIN(4,width-x-1) );
 511     }
 512     x264_free(sum0);
 513     x264_free(sum1);
 514     return ssim;
 515 }
 516
 517
 518 /****************************************************************************
 519  * successive elimination
 520  ****************************************************************************/
 521 static int x264_pixel_ads4( int enc_dc[4], uint16_t *sums, int delta,
 522                             uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
 523 {
 524     int nmv=0, i;
 525     for( i=0; i<width; i++, sums++ )
 526     {
 527         int ads = abs( enc_dc[0] - sums[0] )
 528                 + abs( enc_dc[1] - sums[8] )
 529                 + abs( enc_dc[2] - sums[delta] )
 530                 + abs( enc_dc[3] - sums[delta+8] )
 531                 + cost_mvx[i];
 532         if( ads < thresh )
 533             mvs[nmv++] = i;
 534     }
 535     return nmv;
 536 }
 537
 538 static int x264_pixel_ads2( int enc_dc[2], uint16_t *sums, int delta,
 539                             uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
 540 {
 541     int nmv=0, i;
 542     for( i=0; i<width; i++, sums++ )
 543     {
 544         int ads = abs( enc_dc[0] - sums[0] )
 545                 + abs( enc_dc[1] - sums[delta] )
 546                 + cost_mvx[i];
 547         if( ads < thresh )
 548             mvs[nmv++] = i;
 549     }
 550     return nmv;
 551 }
 552
 553 static int x264_pixel_ads1( int enc_dc[1], uint16_t *sums, int delta,
 554                             uint16_t *cost_mvx, int16_t *mvs, int width, int thresh )
 555 {
 556     int nmv=0, i;
 557     for( i=0; i<width; i++, sums++ )
 558     {
 559         int ads = abs( enc_dc[0] - sums[0] )
 560                 + cost_mvx[i];
 561         if( ads < thresh )
 562             mvs[nmv++] = i;
 563     }
 564     return nmv;
 565 }
 566
 567
 568 /****************************************************************************
 569  * x264_pixel_init:
 570  ****************************************************************************/
 571 void x264_pixel_init( int cpu, x264_pixel_function_t *pixf )
 572 {
 573     memset( pixf, 0, sizeof(*pixf) );
 574
 575 #define INIT2_NAME( name1, name2, cpu ) \
 576     pixf->name1[PIXEL_16x16] = x264_pixel_##name2##_16x16##cpu;\
 577     pixf->name1[PIXEL_16x8]  = x264_pixel_##name2##_16x8##cpu;
 578 #define INIT4_NAME( name1, name2, cpu ) \
 579     INIT2_NAME( name1, name2, cpu ) \
 580     pixf->name1[PIXEL_8x16]  = x264_pixel_##name2##_8x16##cpu;\
 581     pixf->name1[PIXEL_8x8]   = x264_pixel_##name2##_8x8##cpu;
 582 #define INIT5_NAME( name1, name2, cpu ) \
 583     INIT4_NAME( name1, name2, cpu ) \
 584     pixf->name1[PIXEL_8x4]   = x264_pixel_##name2##_8x4##cpu;
 585 #define INIT6_NAME( name1, name2, cpu ) \
 586     INIT5_NAME( name1, name2, cpu ) \
 587     pixf->name1[PIXEL_4x8]   = x264_pixel_##name2##_4x8##cpu;
 588 #define INIT7_NAME( name1, name2, cpu ) \
 589     INIT6_NAME( name1, name2, cpu ) \
 590     pixf->name1[PIXEL_4x4]   = x264_pixel_##name2##_4x4##cpu;
 591 #define INIT2( name, cpu ) INIT2_NAME( name, name, cpu )
 592 #define INIT4( name, cpu ) INIT4_NAME( name, name, cpu )
 593 #define INIT5( name, cpu ) INIT5_NAME( name, name, cpu )
 594 #define INIT6( name, cpu ) INIT6_NAME( name, name, cpu )
 595 #define INIT7( name, cpu ) INIT7_NAME( name, name, cpu )
 596
 597 #define INIT_ADS( cpu ) \
 598     pixf->ads[PIXEL_16x16] = x264_pixel_ads4##cpu;\
 599     pixf->ads[PIXEL_16x8] = x264_pixel_ads2##cpu;\
 600     pixf->ads[PIXEL_8x8] = x264_pixel_ads1##cpu;
 601
 602     INIT7( sad, );
 603     INIT7_NAME( sad_aligned, sad, );
 604     INIT7( sad_x3, );
 605     INIT7( sad_x4, );
 606     INIT7( ssd, );
 607     INIT7( satd, );
 608     INIT7( satd_x3, );
 609     INIT7( satd_x4, );
 610     INIT4( sa8d, );
 611     INIT4( hadamard_ac, );
 612     INIT_ADS( );
 613
 614     pixf->var[PIXEL_16x16] = x264_pixel_var_16x16;
 615     pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8;
 616
 617     pixf->ssim_4x4x2_core = ssim_4x4x2_core;
 618     pixf->ssim_end4 = ssim_end4;
 619
 620 #ifdef HAVE_MMX
 621     if( cpu&X264_CPU_MMX )
 622     {
 623         INIT7( ssd, _mmx );
 624     }
 625
 626     if( cpu&X264_CPU_MMXEXT )
 627     {
 628         INIT7( sad, _mmxext );
 629         INIT7_NAME( sad_aligned, sad, _mmxext );
 630         INIT7( sad_x3, _mmxext );
 631         INIT7( sad_x4, _mmxext );
 632         INIT7( satd, _mmxext );
 633         INIT7( satd_x3, _mmxext );
 634         INIT7( satd_x4, _mmxext );
 635         INIT4( hadamard_ac, _mmxext );
 636         INIT_ADS( _mmxext );
 637         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_mmxext;
 638         pixf->var[PIXEL_8x8]   = x264_pixel_var_8x8_mmxext;
 639 #ifdef ARCH_X86
 640         pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_mmxext;
 641         pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8_mmxext;
 642         pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_mmxext;
 643         pixf->ssim_4x4x2_core  = x264_pixel_ssim_4x4x2_core_mmxext;
 644
 645         if( cpu&X264_CPU_CACHELINE_32 )
 646         {
 647             INIT5( sad, _cache32_mmxext );
 648             INIT4( sad_x3, _cache32_mmxext );
 649             INIT4( sad_x4, _cache32_mmxext );
 650         }
 651         else if( cpu&X264_CPU_CACHELINE_64 )
 652         {
 653             INIT5( sad, _cache64_mmxext );
 654             INIT4( sad_x3, _cache64_mmxext );
 655             INIT4( sad_x4, _cache64_mmxext );
 656         }
 657 #else
 658         if( cpu&X264_CPU_CACHELINE_64 )
 659         {
 660             pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_cache64_mmxext;
 661             pixf->sad[PIXEL_8x8]  = x264_pixel_sad_8x8_cache64_mmxext;
 662             pixf->sad[PIXEL_8x4]  = x264_pixel_sad_8x4_cache64_mmxext;
 663             pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_cache64_mmxext;
 664             pixf->sad_x3[PIXEL_8x8]  = x264_pixel_sad_x3_8x8_cache64_mmxext;
 665             pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_cache64_mmxext;
 666             pixf->sad_x4[PIXEL_8x8]  = x264_pixel_sad_x4_8x8_cache64_mmxext;
 667         }
 668 #endif
 669         pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_mmxext;
 670         pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_mmxext;
 671         pixf->intra_satd_x3_8x8c  = x264_intra_satd_x3_8x8c_mmxext;
 672         pixf->intra_satd_x3_4x4   = x264_intra_satd_x3_4x4_mmxext;
 673     }
 674
 675     if( (cpu&X264_CPU_SSE2) && !(cpu&X264_CPU_SSE2_IS_SLOW) )
 676     {
 677         INIT2( sad, _sse2 );
 678         INIT2( sad_x3, _sse2 );
 679         INIT2( sad_x4, _sse2 );
 680         if( !(cpu&X264_CPU_STACK_MOD4) )
 681         {
 682             INIT4( hadamard_ac, _sse2 );
 683         }
 684         INIT_ADS( _sse2 );
 685         pixf->var[PIXEL_8x8] = x264_pixel_var_8x8_sse2;
 686         pixf->intra_sad_x3_16x16 = x264_intra_sad_x3_16x16_sse2;
 687 #ifdef ARCH_X86
 688         if( cpu&X264_CPU_CACHELINE_64 )
 689         {
 690             INIT2( sad, _cache64_sse2 );
 691             INIT2( sad_x3, _cache64_sse2 );
 692             INIT2( sad_x4, _cache64_sse2 );
 693         }
 694 #endif
 695         if( cpu&X264_CPU_SSE_MISALIGN )
 696         {
 697             INIT2( sad_x3, _sse2_misalign );
 698             INIT2( sad_x4, _sse2_misalign );
 699         }
 700     }
 701     if( cpu&X264_CPU_SSE2 )
 702     {
 703         INIT5( ssd, _sse2 );
 704         if( cpu&X264_CPU_SSE2_IS_FAST )
 705         {
 706             INIT6( satd, _sse2 );
 707             INIT6( satd_x3, _sse2 );
 708             INIT6( satd_x4, _sse2 );
 709         }
 710         else
 711         {
 712             INIT5( satd, _sse2 );
 713             INIT5( satd_x3, _sse2 );
 714             INIT5( satd_x4, _sse2 );
 715         }
 716         INIT2_NAME( sad_aligned, sad, _sse2_aligned );
 717         pixf->var[PIXEL_16x16] = x264_pixel_var_16x16_sse2;
 718         pixf->ssim_4x4x2_core  = x264_pixel_ssim_4x4x2_core_sse2;
 719         pixf->ssim_end4        = x264_pixel_ssim_end4_sse2;
 720         pixf->sa8d[PIXEL_16x16] = x264_pixel_sa8d_16x16_sse2;
 721         pixf->sa8d[PIXEL_8x8]   = x264_pixel_sa8d_8x8_sse2;
 722 #ifdef ARCH_X86_64
 723         pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_sse2;
 724 #endif
 725     }
 726
 727     if( cpu&X264_CPU_SSE2_IS_FAST && !(cpu&X264_CPU_CACHELINE_64) )
 728     {
 729         pixf->sad_aligned[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
 730         pixf->sad[PIXEL_8x16] = x264_pixel_sad_8x16_sse2;
 731         pixf->sad_x3[PIXEL_8x16] = x264_pixel_sad_x3_8x16_sse2;
 732         pixf->sad_x3[PIXEL_8x8] = x264_pixel_sad_x3_8x8_sse2;
 733         pixf->sad_x3[PIXEL_8x4] = x264_pixel_sad_x3_8x4_sse2;
 734         pixf->sad_x4[PIXEL_8x16] = x264_pixel_sad_x4_8x16_sse2;
 735         pixf->sad_x4[PIXEL_8x8] = x264_pixel_sad_x4_8x8_sse2;
 736         pixf->sad_x4[PIXEL_8x4] = x264_pixel_sad_x4_8x4_sse2;
 737     }
 738
 739     if( (cpu&X264_CPU_SSE3) && (cpu&X264_CPU_CACHELINE_64) )
 740     {
 741         INIT2( sad, _sse3 );
 742         INIT2( sad_x3, _sse3 );
 743         INIT2( sad_x4, _sse3 );
 744     }
 745
 746     if( cpu&X264_CPU_SSSE3 )
 747     {
 748         INIT7( satd, _ssse3 );
 749         INIT7( satd_x3, _ssse3 );
 750         INIT7( satd_x4, _ssse3 );
 751         if( !(cpu&X264_CPU_STACK_MOD4) )
 752         {
 753             INIT4( hadamard_ac, _ssse3 );
 754         }
 755         INIT_ADS( _ssse3 );
 756         pixf->sa8d[PIXEL_16x16]= x264_pixel_sa8d_16x16_ssse3;
 757         pixf->sa8d[PIXEL_8x8]  = x264_pixel_sa8d_8x8_ssse3;
 758         pixf->intra_satd_x3_16x16 = x264_intra_satd_x3_16x16_ssse3;
 759         pixf->intra_sad_x3_16x16  = x264_intra_sad_x3_16x16_ssse3;
 760         pixf->intra_satd_x3_8x8c  = x264_intra_satd_x3_8x8c_ssse3;
 761         pixf->intra_satd_x3_4x4   = x264_intra_satd_x3_4x4_ssse3;
 762 #ifdef ARCH_X86_64
 763         pixf->intra_sa8d_x3_8x8 = x264_intra_sa8d_x3_8x8_ssse3;
 764 #endif
 765         if( cpu&X264_CPU_CACHELINE_64 )
 766         {
 767             INIT2( sad, _cache64_ssse3 );
 768             INIT2( sad_x3, _cache64_ssse3 );
 769             INIT2( sad_x4, _cache64_ssse3 );
 770         }
 771         if( cpu&X264_CPU_PHADD_IS_FAST )
 772         {
 773             INIT6( satd, _ssse3_phadd );
 774             INIT6( satd_x3, _ssse3_phadd );
 775             INIT6( satd_x4, _ssse3_phadd );
 776         }
 777     }
 778
 779     if( cpu&X264_CPU_SSE4 )
 780     {
 781         pixf->ssd[PIXEL_4x8] = x264_pixel_ssd_4x8_sse4;
 782         pixf->ssd[PIXEL_4x4] = x264_pixel_ssd_4x4_sse4;
 783     }
 784 #endif //HAVE_MMX
 785
 786 #ifdef ARCH_PPC
 787     if( cpu&X264_CPU_ALTIVEC )
 788     {
 789         x264_pixel_altivec_init( pixf );
 790     }
 791 #endif
 792 #ifdef ARCH_UltraSparc
 793     INIT4( sad, _vis );
 794     INIT4( sad_x3, _vis );
 795     INIT4( sad_x4, _vis );
 796 #endif
 797
 798     pixf->ads[PIXEL_8x16] =
 799     pixf->ads[PIXEL_8x4] =
 800     pixf->ads[PIXEL_4x8] = pixf->ads[PIXEL_16x8];
 801     pixf->ads[PIXEL_4x4] = pixf->ads[PIXEL_8x8];
 802 }
 803