git.sesse.net Git - ffmpeg/blob - libavcodec/i386/snowdsp_mmx.c

   1 /*
   2  * MMX and SSE2 optimized snow DSP utils
   3  * Copyright (c) 2005-2006 Robert Edele <yartrebo@earthlink.net>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include "avcodec.h"
  23 #include "snow.h"
  24 #include "x86_cpu.h"
  25
  26 void ff_snow_horizontal_compose97i_sse2(IDWTELEM *b, int width){
  27     const int w2= (width+1)>>1;
  28     // SSE2 code runs faster with pointers aligned on a 32-byte boundary.
  29     IDWTELEM temp_buf[(width>>1) + 4];
  30     IDWTELEM * const temp = temp_buf + 4 - (((int)temp_buf & 0xF) >> 2);
  31     const int w_l= (width>>1);
  32     const int w_r= w2 - 1;
  33     int i;
  34
  35     { // Lift 0
  36         IDWTELEM * const ref = b + w2 - 1;
  37         IDWTELEM b_0 = b[0]; //By allowing the first entry in b[0] to be calculated twice
  38         // (the first time erroneously), we allow the SSE2 code to run an extra pass.
  39         // The savings in code and time are well worth having to store this value and
  40         // calculate b[0] correctly afterwards.
  41
  42         i = 0;
  43         asm volatile(
  44             "pcmpeqd   %%xmm7, %%xmm7         \n\t"
  45             "psllw        $15, %%xmm7         \n\t"
  46             "psrlw        $13, %%xmm7         \n\t"
  47         ::);
  48         for(; i<w_l-15; i+=16){
  49             asm volatile(
  50                 "movdqu   (%1), %%xmm1        \n\t"
  51                 "movdqu 16(%1), %%xmm5        \n\t"
  52                 "movdqu  2(%1), %%xmm2        \n\t"
  53                 "movdqu 18(%1), %%xmm6        \n\t"
  54                 "paddw  %%xmm1, %%xmm2        \n\t"
  55                 "paddw  %%xmm5, %%xmm6        \n\t"
  56                 "movdqa %%xmm2, %%xmm0        \n\t"
  57                 "movdqa %%xmm6, %%xmm4        \n\t"
  58                 "paddw  %%xmm2, %%xmm2        \n\t"
  59                 "paddw  %%xmm6, %%xmm6        \n\t"
  60                 "paddw  %%xmm0, %%xmm2        \n\t"
  61                 "paddw  %%xmm4, %%xmm6        \n\t"
  62                 "paddw  %%xmm7, %%xmm2        \n\t"
  63                 "paddw  %%xmm7, %%xmm6        \n\t"
  64                 "psraw      $3, %%xmm2        \n\t"
  65                 "psraw      $3, %%xmm6        \n\t"
  66                 "movdqa   (%0), %%xmm0        \n\t"
  67                 "movdqa 16(%0), %%xmm4        \n\t"
  68                 "psubw  %%xmm2, %%xmm0        \n\t"
  69                 "psubw  %%xmm6, %%xmm4        \n\t"
  70                 "movdqa %%xmm0, (%0)          \n\t"
  71                 "movdqa %%xmm4, 16(%0)        \n\t"
  72                 :: "r"(&b[i]), "r"(&ref[i])
  73                 : "memory"
  74             );
  75         }
  76         snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS);
  77         b[0] = b_0 - ((W_DM * 2 * ref[1]+W_DO)>>W_DS);
  78     }
  79
  80     { // Lift 1
  81         IDWTELEM * const dst = b+w2;
  82
  83         i = 0;
  84         for(; (((long)&dst[i]) & 0x1F) && i<w_r; i++){
  85             dst[i] = dst[i] - (b[i] + b[i + 1]);
  86         }
  87         for(; i<w_r-15; i+=16){
  88             asm volatile(
  89                 "movdqu   (%1), %%xmm1        \n\t"
  90                 "movdqu 16(%1), %%xmm5        \n\t"
  91                 "movdqu  2(%1), %%xmm2        \n\t"
  92                 "movdqu 18(%1), %%xmm6        \n\t"
  93                 "paddw  %%xmm1, %%xmm2        \n\t"
  94                 "paddw  %%xmm5, %%xmm6        \n\t"
  95                 "movdqa   (%0), %%xmm0        \n\t"
  96                 "movdqa 16(%0), %%xmm4        \n\t"
  97                 "psubw  %%xmm2, %%xmm0        \n\t"
  98                 "psubw  %%xmm6, %%xmm4        \n\t"
  99                 "movdqa %%xmm0, (%0)          \n\t"
 100                 "movdqa %%xmm4, 16(%0)        \n\t"
 101                 :: "r"(&dst[i]), "r"(&b[i])
 102                 : "memory"
 103             );
 104         }
 105         snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS);
 106     }
 107
 108     { // Lift 2
 109         IDWTELEM * const ref = b+w2 - 1;
 110         IDWTELEM b_0 = b[0];
 111
 112         i = 0;
 113         asm volatile(
 114             "psllw          $1, %%xmm7        \n\t"
 115         ::);
 116         for(; i<w_l-15; i+=16){
 117             asm volatile(
 118                 "movdqu   (%1), %%xmm1        \n\t"
 119                 "movdqu 16(%1), %%xmm5        \n\t"
 120                 "movdqu  2(%1), %%xmm0        \n\t"
 121                 "movdqu 18(%1), %%xmm4        \n\t" //FIXME try aligned reads and shifts
 122                 "paddw  %%xmm1, %%xmm0        \n\t"
 123                 "paddw  %%xmm5, %%xmm4        \n\t"
 124                 "paddw  %%xmm7, %%xmm0        \n\t"
 125                 "paddw  %%xmm7, %%xmm4        \n\t"
 126                 "movdqa   (%0), %%xmm1        \n\t"
 127                 "movdqa 16(%0), %%xmm5        \n\t"
 128                 "psraw      $2, %%xmm0        \n\t"
 129                 "psraw      $2, %%xmm4        \n\t"
 130                 "paddw  %%xmm1, %%xmm0        \n\t"
 131                 "paddw  %%xmm5, %%xmm4        \n\t"
 132                 "psraw      $2, %%xmm0        \n\t"
 133                 "psraw      $2, %%xmm4        \n\t"
 134                 "paddw  %%xmm1, %%xmm0        \n\t"
 135                 "paddw  %%xmm5, %%xmm4        \n\t"
 136                 "movdqa %%xmm0, (%0)          \n\t"
 137                 "movdqa %%xmm4, 16(%0)        \n\t"
 138                 :: "r"(&b[i]), "r"(&ref[i])
 139                 : "memory"
 140             );
 141         }
 142         snow_horizontal_compose_liftS_lead_out(i, b, b, ref, width, w_l);
 143         b[0] = b_0 + ((2 * ref[1] + W_BO-1 + 4 * b_0) >> W_BS);
 144     }
 145
 146     { // Lift 3
 147         IDWTELEM * const src = b+w2;
 148
 149         i = 0;
 150         for(; (((long)&temp[i]) & 0x1F) && i<w_r; i++){
 151             temp[i] = src[i] - ((-W_AM*(b[i] + b[i+1]))>>W_AS);
 152         }
 153         for(; i<w_r-7; i+=8){
 154             asm volatile(
 155                 "movdqu  2(%1), %%xmm2        \n\t"
 156                 "movdqu 18(%1), %%xmm6        \n\t"
 157                 "paddw    (%1), %%xmm2        \n\t"
 158                 "paddw  16(%1), %%xmm6        \n\t"
 159                 "movdqu   (%0), %%xmm0        \n\t"
 160                 "movdqu 16(%0), %%xmm4        \n\t"
 161                 "paddw  %%xmm2, %%xmm0        \n\t"
 162                 "paddw  %%xmm6, %%xmm4        \n\t"
 163                 "psraw      $1, %%xmm2        \n\t"
 164                 "psraw      $1, %%xmm6        \n\t"
 165                 "paddw  %%xmm0, %%xmm2        \n\t"
 166                 "paddw  %%xmm4, %%xmm6        \n\t"
 167                 "movdqa %%xmm2, (%2)          \n\t"
 168                 "movdqa %%xmm6, 16(%2)        \n\t"
 169                 :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i])
 170                  : "memory"
 171                );
 172         }
 173         snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO+1, W_AS);
 174     }
 175
 176     {
 177         snow_interleave_line_header(&i, width, b, temp);
 178
 179         for (; (i & 0x3E) != 0x3E; i-=2){
 180             b[i+1] = temp[i>>1];
 181             b[i] = b[i>>1];
 182         }
 183         for (i-=62; i>=0; i-=64){
 184             asm volatile(
 185                 "movdqa      (%1), %%xmm0       \n\t"
 186                 "movdqa    16(%1), %%xmm2       \n\t"
 187                 "movdqa    32(%1), %%xmm4       \n\t"
 188                 "movdqa    48(%1), %%xmm6       \n\t"
 189                 "movdqa      (%1), %%xmm1       \n\t"
 190                 "movdqa    16(%1), %%xmm3       \n\t"
 191                 "movdqa    32(%1), %%xmm5       \n\t"
 192                 "movdqa    48(%1), %%xmm7       \n\t"
 193                 "punpcklwd   (%2), %%xmm0       \n\t"
 194                 "punpcklwd 16(%2), %%xmm2       \n\t"
 195                 "punpcklwd 32(%2), %%xmm4       \n\t"
 196                 "punpcklwd 48(%2), %%xmm6       \n\t"
 197                 "movdqa    %%xmm0, (%0)         \n\t"
 198                 "movdqa    %%xmm2, 32(%0)       \n\t"
 199                 "movdqa    %%xmm4, 64(%0)       \n\t"
 200                 "movdqa    %%xmm6, 96(%0)       \n\t"
 201                 "punpckhwd   (%2), %%xmm1       \n\t"
 202                 "punpckhwd 16(%2), %%xmm3       \n\t"
 203                 "punpckhwd 32(%2), %%xmm5       \n\t"
 204                 "punpckhwd 48(%2), %%xmm7       \n\t"
 205                 "movdqa    %%xmm1, 16(%0)       \n\t"
 206                 "movdqa    %%xmm3, 48(%0)       \n\t"
 207                 "movdqa    %%xmm5, 80(%0)       \n\t"
 208                 "movdqa    %%xmm7, 112(%0)      \n\t"
 209                 :: "r"(&(b)[i]), "r"(&(b)[i>>1]), "r"(&(temp)[i>>1])
 210                  : "memory"
 211                );
 212         }
 213     }
 214 }
 215
 216 void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, int width){
 217     const int w2= (width+1)>>1;
 218     IDWTELEM temp[width >> 1];
 219     const int w_l= (width>>1);
 220     const int w_r= w2 - 1;
 221     int i;
 222
 223     { // Lift 0
 224         IDWTELEM * const ref = b + w2 - 1;
 225
 226         i = 1;
 227         b[0] = b[0] - ((W_DM * 2 * ref[1]+W_DO)>>W_DS);
 228         asm volatile(
 229             "pcmpeqw    %%mm7, %%mm7         \n\t"
 230             "psllw        $15, %%mm7         \n\t"
 231             "psrlw        $13, %%mm7         \n\t"
 232            ::);
 233         for(; i<w_l-7; i+=8){
 234             asm volatile(
 235                 "movq     (%1), %%mm2        \n\t"
 236                 "movq    8(%1), %%mm6        \n\t"
 237                 "paddw   2(%1), %%mm2        \n\t"
 238                 "paddw  10(%1), %%mm6        \n\t"
 239                 "movq    %%mm2, %%mm0        \n\t"
 240                 "movq    %%mm6, %%mm4        \n\t"
 241                 "paddw   %%mm2, %%mm2        \n\t"
 242                 "paddw   %%mm6, %%mm6        \n\t"
 243                 "paddw   %%mm0, %%mm2        \n\t"
 244                 "paddw   %%mm4, %%mm6        \n\t"
 245                 "paddw   %%mm7, %%mm2        \n\t"
 246                 "paddw   %%mm7, %%mm6        \n\t"
 247                 "psraw      $3, %%mm2        \n\t"
 248                 "psraw      $3, %%mm6        \n\t"
 249                 "movq     (%0), %%mm0        \n\t"
 250                 "movq    8(%0), %%mm4        \n\t"
 251                 "psubw   %%mm2, %%mm0        \n\t"
 252                 "psubw   %%mm6, %%mm4        \n\t"
 253                 "movq    %%mm0, (%0)         \n\t"
 254                 "movq    %%mm4, 8(%0)        \n\t"
 255                 :: "r"(&b[i]), "r"(&ref[i])
 256                  : "memory"
 257                );
 258         }
 259         snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS);
 260     }
 261
 262     { // Lift 1
 263         IDWTELEM * const dst = b+w2;
 264
 265         i = 0;
 266         for(; i<w_r-7; i+=8){
 267             asm volatile(
 268                 "movq     (%1), %%mm2        \n\t"
 269                 "movq    8(%1), %%mm6        \n\t"
 270                 "paddw   2(%1), %%mm2        \n\t"
 271                 "paddw  10(%1), %%mm6        \n\t"
 272                 "movq     (%0), %%mm0        \n\t"
 273                 "movq    8(%0), %%mm4        \n\t"
 274                 "psubw   %%mm2, %%mm0        \n\t"
 275                 "psubw   %%mm6, %%mm4        \n\t"
 276                 "movq    %%mm0, (%0)         \n\t"
 277                 "movq    %%mm4, 8(%0)        \n\t"
 278                 :: "r"(&dst[i]), "r"(&b[i])
 279                  : "memory"
 280                );
 281         }
 282         snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS);
 283     }
 284
 285     { // Lift 2
 286         IDWTELEM * const ref = b+w2 - 1;
 287
 288         i = 1;
 289         b[0] = b[0] + (((2 * ref[1] + W_BO) + 4 * b[0]) >> W_BS);
 290         asm volatile(
 291             "psllw          $1, %%mm7        \n\t"
 292            ::);
 293         for(; i<w_l-7; i+=8){
 294             asm volatile(
 295                 "movq     (%1), %%mm0        \n\t"
 296                 "movq    8(%1), %%mm4        \n\t"
 297                 "paddw   2(%1), %%mm0        \n\t"
 298                 "paddw  10(%1), %%mm4        \n\t"
 299                 "paddw   %%mm7, %%mm0        \n\t"
 300                 "paddw   %%mm7, %%mm4        \n\t"
 301                 "psraw      $2, %%mm0        \n\t"
 302                 "psraw      $2, %%mm4        \n\t"
 303                 "movq     (%0), %%mm1        \n\t"
 304                 "movq    8(%0), %%mm5        \n\t"
 305                 "paddw   %%mm1, %%mm0        \n\t"
 306                 "paddw   %%mm5, %%mm4        \n\t"
 307                 "psraw      $2, %%mm0        \n\t"
 308                 "psraw      $2, %%mm4        \n\t"
 309                 "paddw   %%mm1, %%mm0        \n\t"
 310                 "paddw   %%mm5, %%mm4        \n\t"
 311                 "movq    %%mm0, (%0)         \n\t"
 312                 "movq    %%mm4, 8(%0)        \n\t"
 313                 :: "r"(&b[i]), "r"(&ref[i])
 314                  : "memory"
 315                );
 316         }
 317         snow_horizontal_compose_liftS_lead_out(i, b, b, ref, width, w_l);
 318     }
 319
 320     { // Lift 3
 321         IDWTELEM * const src = b+w2;
 322         i = 0;
 323
 324         for(; i<w_r-7; i+=8){
 325             asm volatile(
 326                 "movq    2(%1), %%mm2        \n\t"
 327                 "movq   10(%1), %%mm6        \n\t"
 328                 "paddw    (%1), %%mm2        \n\t"
 329                 "paddw   8(%1), %%mm6        \n\t"
 330                 "movq     (%0), %%mm0        \n\t"
 331                 "movq    8(%0), %%mm4        \n\t"
 332                 "paddw   %%mm2, %%mm0        \n\t"
 333                 "paddw   %%mm6, %%mm4        \n\t"
 334                 "psraw      $1, %%mm2        \n\t"
 335                 "psraw      $1, %%mm6        \n\t"
 336                 "paddw   %%mm0, %%mm2        \n\t"
 337                 "paddw   %%mm4, %%mm6        \n\t"
 338                 "movq    %%mm2, (%2)         \n\t"
 339                 "movq    %%mm6, 8(%2)        \n\t"
 340                 :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i])
 341                  : "memory"
 342                );
 343         }
 344         snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO+1, W_AS);
 345     }
 346
 347     {
 348         snow_interleave_line_header(&i, width, b, temp);
 349
 350         for (; (i & 0x1E) != 0x1E; i-=2){
 351             b[i+1] = temp[i>>1];
 352             b[i] = b[i>>1];
 353         }
 354         for (i-=30; i>=0; i-=32){
 355             asm volatile(
 356                 "movq        (%1), %%mm0       \n\t"
 357                 "movq       8(%1), %%mm2       \n\t"
 358                 "movq      16(%1), %%mm4       \n\t"
 359                 "movq      24(%1), %%mm6       \n\t"
 360                 "movq        (%1), %%mm1       \n\t"
 361                 "movq       8(%1), %%mm3       \n\t"
 362                 "movq      16(%1), %%mm5       \n\t"
 363                 "movq      24(%1), %%mm7       \n\t"
 364                 "punpcklwd   (%2), %%mm0       \n\t"
 365                 "punpcklwd  8(%2), %%mm2       \n\t"
 366                 "punpcklwd 16(%2), %%mm4       \n\t"
 367                 "punpcklwd 24(%2), %%mm6       \n\t"
 368                 "movq       %%mm0, (%0)        \n\t"
 369                 "movq       %%mm2, 16(%0)      \n\t"
 370                 "movq       %%mm4, 32(%0)      \n\t"
 371                 "movq       %%mm6, 48(%0)      \n\t"
 372                 "punpckhwd   (%2), %%mm1       \n\t"
 373                 "punpckhwd  8(%2), %%mm3       \n\t"
 374                 "punpckhwd 16(%2), %%mm5       \n\t"
 375                 "punpckhwd 24(%2), %%mm7       \n\t"
 376                 "movq       %%mm1, 8(%0)       \n\t"
 377                 "movq       %%mm3, 24(%0)      \n\t"
 378                 "movq       %%mm5, 40(%0)      \n\t"
 379                 "movq       %%mm7, 56(%0)      \n\t"
 380                 :: "r"(&b[i]), "r"(&b[i>>1]), "r"(&temp[i>>1])
 381                  : "memory"
 382                );
 383         }
 384     }
 385 }
 386
 387 #define snow_vertical_compose_sse2_load_add(op,r,t0,t1,t2,t3)\
 388         ""op" (%%"r",%%"REG_d",2), %%"t0"      \n\t"\
 389         ""op" 16(%%"r",%%"REG_d",2), %%"t1"    \n\t"\
 390         ""op" 32(%%"r",%%"REG_d",2), %%"t2"    \n\t"\
 391         ""op" 48(%%"r",%%"REG_d",2), %%"t3"    \n\t"
 392
 393 #define snow_vertical_compose_sse2_load(r,t0,t1,t2,t3)\
 394         snow_vertical_compose_sse2_load_add("movdqa",r,t0,t1,t2,t3)
 395
 396 #define snow_vertical_compose_sse2_add(r,t0,t1,t2,t3)\
 397         snow_vertical_compose_sse2_load_add("paddw",r,t0,t1,t2,t3)
 398
 399 #define snow_vertical_compose_sse2_sub(s0,s1,s2,s3,t0,t1,t2,t3)\
 400         "psubw %%"s0", %%"t0" \n\t"\
 401         "psubw %%"s1", %%"t1" \n\t"\
 402         "psubw %%"s2", %%"t2" \n\t"\
 403         "psubw %%"s3", %%"t3" \n\t"
 404
 405 #define snow_vertical_compose_sse2_store(w,s0,s1,s2,s3)\
 406         "movdqa %%"s0", (%%"w",%%"REG_d",2)      \n\t"\
 407         "movdqa %%"s1", 16(%%"w",%%"REG_d",2)    \n\t"\
 408         "movdqa %%"s2", 32(%%"w",%%"REG_d",2)    \n\t"\
 409         "movdqa %%"s3", 48(%%"w",%%"REG_d",2)    \n\t"
 410
 411 #define snow_vertical_compose_sse2_sra(n,t0,t1,t2,t3)\
 412         "psraw $"n", %%"t0" \n\t"\
 413         "psraw $"n", %%"t1" \n\t"\
 414         "psraw $"n", %%"t2" \n\t"\
 415         "psraw $"n", %%"t3" \n\t"
 416
 417 #define snow_vertical_compose_sse2_r2r_add(s0,s1,s2,s3,t0,t1,t2,t3)\
 418         "paddw %%"s0", %%"t0" \n\t"\
 419         "paddw %%"s1", %%"t1" \n\t"\
 420         "paddw %%"s2", %%"t2" \n\t"\
 421         "paddw %%"s3", %%"t3" \n\t"
 422
 423 #define snow_vertical_compose_sse2_move(s0,s1,s2,s3,t0,t1,t2,t3)\
 424         "movdqa %%"s0", %%"t0" \n\t"\
 425         "movdqa %%"s1", %%"t1" \n\t"\
 426         "movdqa %%"s2", %%"t2" \n\t"\
 427         "movdqa %%"s3", %%"t3" \n\t"
 428
 429 void ff_snow_vertical_compose97i_sse2(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){
 430     long i = width;
 431
 432     while(i & 0x1F)
 433     {
 434         i--;
 435         b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
 436         b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
 437         b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
 438         b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
 439     }
 440
 441          asm volatile (
 442         "jmp 2f                                      \n\t"
 443         "1:                                          \n\t"
 444
 445         "mov %6, %%"REG_a"                           \n\t"
 446         "mov %4, %%"REG_S"                           \n\t"
 447
 448         snow_vertical_compose_sse2_load(REG_S,"xmm0","xmm2","xmm4","xmm6")
 449         snow_vertical_compose_sse2_add(REG_a,"xmm0","xmm2","xmm4","xmm6")
 450         snow_vertical_compose_sse2_move("xmm0","xmm2","xmm4","xmm6","xmm1","xmm3","xmm5","xmm7")
 451         snow_vertical_compose_sse2_r2r_add("xmm0","xmm2","xmm4","xmm6","xmm0","xmm2","xmm4","xmm6")
 452         snow_vertical_compose_sse2_r2r_add("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
 453
 454         "pcmpeqd %%xmm1, %%xmm1                      \n\t"
 455         "psllw $15, %%xmm1                           \n\t"
 456         "psrlw $13, %%xmm1                           \n\t"
 457         "mov %5, %%"REG_a"                           \n\t"
 458
 459         snow_vertical_compose_sse2_r2r_add("xmm1","xmm1","xmm1","xmm1","xmm0","xmm2","xmm4","xmm6")
 460         snow_vertical_compose_sse2_sra("3","xmm0","xmm2","xmm4","xmm6")
 461         snow_vertical_compose_sse2_load(REG_a,"xmm1","xmm3","xmm5","xmm7")
 462         snow_vertical_compose_sse2_sub("xmm0","xmm2","xmm4","xmm6","xmm1","xmm3","xmm5","xmm7")
 463         snow_vertical_compose_sse2_store(REG_a,"xmm1","xmm3","xmm5","xmm7")
 464         "mov %3, %%"REG_c"                           \n\t"
 465         snow_vertical_compose_sse2_load(REG_S,"xmm0","xmm2","xmm4","xmm6")
 466         snow_vertical_compose_sse2_add(REG_c,"xmm1","xmm3","xmm5","xmm7")
 467         snow_vertical_compose_sse2_sub("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
 468         snow_vertical_compose_sse2_store(REG_S,"xmm0","xmm2","xmm4","xmm6")
 469         "mov %2, %%"REG_a"                           \n\t"
 470         snow_vertical_compose_sse2_add(REG_a,"xmm0","xmm2","xmm4","xmm6")
 471         snow_vertical_compose_sse2_sra("2","xmm0","xmm2","xmm4","xmm6")
 472         snow_vertical_compose_sse2_add(REG_c,"xmm0","xmm2","xmm4","xmm6")
 473
 474         "pcmpeqd %%xmm1, %%xmm1                      \n\t"
 475         "psllw $15, %%xmm1                           \n\t"
 476         "psrlw $14, %%xmm1                           \n\t"
 477         "mov %1, %%"REG_S"                           \n\t"
 478
 479         snow_vertical_compose_sse2_r2r_add("xmm1","xmm1","xmm1","xmm1","xmm0","xmm2","xmm4","xmm6")
 480         snow_vertical_compose_sse2_sra("2","xmm0","xmm2","xmm4","xmm6")
 481         snow_vertical_compose_sse2_add(REG_c,"xmm0","xmm2","xmm4","xmm6")
 482         snow_vertical_compose_sse2_store(REG_c,"xmm0","xmm2","xmm4","xmm6")
 483         snow_vertical_compose_sse2_add(REG_S,"xmm0","xmm2","xmm4","xmm6")
 484         snow_vertical_compose_sse2_move("xmm0","xmm2","xmm4","xmm6","xmm1","xmm3","xmm5","xmm7")
 485         snow_vertical_compose_sse2_sra("1","xmm0","xmm2","xmm4","xmm6")
 486         snow_vertical_compose_sse2_r2r_add("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
 487         snow_vertical_compose_sse2_add(REG_a,"xmm0","xmm2","xmm4","xmm6")
 488         snow_vertical_compose_sse2_store(REG_a,"xmm0","xmm2","xmm4","xmm6")
 489
 490         "2:                                          \n\t"
 491         "sub $32, %%"REG_d"                          \n\t"
 492         "jge 1b                                      \n\t"
 493         :"+d"(i)
 494         :
 495         "m"(b0),"m"(b1),"m"(b2),"m"(b3),"m"(b4),"m"(b5):
 496         "%"REG_a"","%"REG_S"","%"REG_c"");
 497 }
 498
 499 #define snow_vertical_compose_mmx_load_add(op,r,t0,t1,t2,t3)\
 500         ""op" (%%"r",%%"REG_d",2), %%"t0"   \n\t"\
 501         ""op" 8(%%"r",%%"REG_d",2), %%"t1"  \n\t"\
 502         ""op" 16(%%"r",%%"REG_d",2), %%"t2" \n\t"\
 503         ""op" 24(%%"r",%%"REG_d",2), %%"t3" \n\t"
 504
 505 #define snow_vertical_compose_mmx_load(r,t0,t1,t2,t3)\
 506         snow_vertical_compose_mmx_load_add("movq",r,t0,t1,t2,t3)
 507
 508 #define snow_vertical_compose_mmx_add(r,t0,t1,t2,t3)\
 509         snow_vertical_compose_mmx_load_add("paddw",r,t0,t1,t2,t3)
 510
 511 #define snow_vertical_compose_mmx_sub(s0,s1,s2,s3,t0,t1,t2,t3)\
 512         snow_vertical_compose_sse2_sub(s0,s1,s2,s3,t0,t1,t2,t3)
 513
 514 #define snow_vertical_compose_mmx_store(w,s0,s1,s2,s3)\
 515         "movq %%"s0", (%%"w",%%"REG_d",2)   \n\t"\
 516         "movq %%"s1", 8(%%"w",%%"REG_d",2)  \n\t"\
 517         "movq %%"s2", 16(%%"w",%%"REG_d",2) \n\t"\
 518         "movq %%"s3", 24(%%"w",%%"REG_d",2) \n\t"
 519
 520 #define snow_vertical_compose_mmx_sra(n,t0,t1,t2,t3)\
 521         snow_vertical_compose_sse2_sra(n,t0,t1,t2,t3)
 522
 523 #define snow_vertical_compose_mmx_r2r_add(s0,s1,s2,s3,t0,t1,t2,t3)\
 524         snow_vertical_compose_sse2_r2r_add(s0,s1,s2,s3,t0,t1,t2,t3)
 525
 526 #define snow_vertical_compose_mmx_move(s0,s1,s2,s3,t0,t1,t2,t3)\
 527         "movq %%"s0", %%"t0" \n\t"\
 528         "movq %%"s1", %%"t1" \n\t"\
 529         "movq %%"s2", %%"t2" \n\t"\
 530         "movq %%"s3", %%"t3" \n\t"
 531
 532 void ff_snow_vertical_compose97i_mmx(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){
 533     long i = width;
 534     while(i & 15)
 535     {
 536         i--;
 537         b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
 538         b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
 539         b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
 540         b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
 541     }
 542
 543     asm volatile(
 544         "jmp 2f                                      \n\t"
 545         "1:                                          \n\t"
 546
 547         "mov %6, %%"REG_a"                           \n\t"
 548         "mov %4, %%"REG_S"                           \n\t"
 549
 550         snow_vertical_compose_mmx_load(REG_S,"mm0","mm2","mm4","mm6")
 551         snow_vertical_compose_mmx_add(REG_a,"mm0","mm2","mm4","mm6")
 552         snow_vertical_compose_mmx_move("mm0","mm2","mm4","mm6","mm1","mm3","mm5","mm7")
 553         snow_vertical_compose_mmx_r2r_add("mm0","mm2","mm4","mm6","mm0","mm2","mm4","mm6")
 554         snow_vertical_compose_mmx_r2r_add("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
 555
 556         "pcmpeqw %%mm1, %%mm1                        \n\t"
 557         "psllw $15, %%mm1                            \n\t"
 558         "psrlw $13, %%mm1                            \n\t"
 559         "mov %5, %%"REG_a"                           \n\t"
 560
 561         snow_vertical_compose_mmx_r2r_add("mm1","mm1","mm1","mm1","mm0","mm2","mm4","mm6")
 562         snow_vertical_compose_mmx_sra("3","mm0","mm2","mm4","mm6")
 563         snow_vertical_compose_mmx_load(REG_a,"mm1","mm3","mm5","mm7")
 564         snow_vertical_compose_mmx_sub("mm0","mm2","mm4","mm6","mm1","mm3","mm5","mm7")
 565         snow_vertical_compose_mmx_store(REG_a,"mm1","mm3","mm5","mm7")
 566         "mov %3, %%"REG_c"                           \n\t"
 567         snow_vertical_compose_mmx_load(REG_S,"mm0","mm2","mm4","mm6")
 568         snow_vertical_compose_mmx_add(REG_c,"mm1","mm3","mm5","mm7")
 569         snow_vertical_compose_mmx_sub("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
 570         snow_vertical_compose_mmx_store(REG_S,"mm0","mm2","mm4","mm6")
 571         "mov %2, %%"REG_a"                           \n\t"
 572         snow_vertical_compose_mmx_add(REG_a,"mm0","mm2","mm4","mm6")
 573         snow_vertical_compose_mmx_sra("2","mm0","mm2","mm4","mm6")
 574         snow_vertical_compose_mmx_add(REG_c,"mm0","mm2","mm4","mm6")
 575
 576         "pcmpeqw %%mm1, %%mm1                        \n\t"
 577         "psllw $15, %%mm1                            \n\t"
 578         "psrlw $14, %%mm1                            \n\t"
 579         "mov %1, %%"REG_S"                           \n\t"
 580
 581         snow_vertical_compose_mmx_r2r_add("mm1","mm1","mm1","mm1","mm0","mm2","mm4","mm6")
 582         snow_vertical_compose_mmx_sra("2","mm0","mm2","mm4","mm6")
 583         snow_vertical_compose_mmx_add(REG_c,"mm0","mm2","mm4","mm6")
 584         snow_vertical_compose_mmx_store(REG_c,"mm0","mm2","mm4","mm6")
 585         snow_vertical_compose_mmx_add(REG_S,"mm0","mm2","mm4","mm6")
 586         snow_vertical_compose_mmx_move("mm0","mm2","mm4","mm6","mm1","mm3","mm5","mm7")
 587         snow_vertical_compose_mmx_sra("1","mm0","mm2","mm4","mm6")
 588         snow_vertical_compose_mmx_r2r_add("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
 589         snow_vertical_compose_mmx_add(REG_a,"mm0","mm2","mm4","mm6")
 590         snow_vertical_compose_mmx_store(REG_a,"mm0","mm2","mm4","mm6")
 591
 592         "2:                                          \n\t"
 593         "sub $16, %%"REG_d"                          \n\t"
 594         "jge 1b                                      \n\t"
 595         :"+d"(i)
 596         :
 597         "m"(b0),"m"(b1),"m"(b2),"m"(b3),"m"(b4),"m"(b5):
 598         "%"REG_a"","%"REG_S"","%"REG_c"");
 599 }
 600
 601 #define snow_inner_add_yblock_sse2_header \
 602     IDWTELEM * * dst_array = sb->line + src_y;\
 603     long tmp;\
 604     asm volatile(\
 605              "mov  %7, %%"REG_c"             \n\t"\
 606              "mov  %6, %2                    \n\t"\
 607              "mov  %4, %%"REG_S"             \n\t"\
 608              "pxor %%xmm7, %%xmm7            \n\t" /* 0 */\
 609              "pcmpeqd %%xmm3, %%xmm3         \n\t"\
 610              "psllw $15, %%xmm3              \n\t"\
 611              "psrlw $12, %%xmm3              \n\t" /* FRAC_BITS >> 1 */\
 612              "1:                             \n\t"\
 613              "mov %1, %%"REG_D"              \n\t"\
 614              "mov (%%"REG_D"), %%"REG_D"     \n\t"\
 615              "add %3, %%"REG_D"              \n\t"
 616
 617 #define snow_inner_add_yblock_sse2_start_8(out_reg1, out_reg2, ptr_offset, s_offset)\
 618              "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
 619              "movq (%%"REG_d"), %%"out_reg1" \n\t"\
 620              "movq (%%"REG_d", %%"REG_c"), %%"out_reg2" \n\t"\
 621              "punpcklbw %%xmm7, %%"out_reg1" \n\t"\
 622              "punpcklbw %%xmm7, %%"out_reg2" \n\t"\
 623              "movq "s_offset"(%%"REG_S"), %%xmm0 \n\t"\
 624              "movq "s_offset"+16(%%"REG_S"), %%xmm4 \n\t"\
 625              "punpcklbw %%xmm7, %%xmm0       \n\t"\
 626              "punpcklbw %%xmm7, %%xmm4       \n\t"\
 627              "pmullw %%xmm0, %%"out_reg1"    \n\t"\
 628              "pmullw %%xmm4, %%"out_reg2"    \n\t"
 629
 630 #define snow_inner_add_yblock_sse2_start_16(out_reg1, out_reg2, ptr_offset, s_offset)\
 631              "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
 632              "movq (%%"REG_d"), %%"out_reg1" \n\t"\
 633              "movq 8(%%"REG_d"), %%"out_reg2" \n\t"\
 634              "punpcklbw %%xmm7, %%"out_reg1" \n\t"\
 635              "punpcklbw %%xmm7, %%"out_reg2" \n\t"\
 636              "movq "s_offset"(%%"REG_S"), %%xmm0 \n\t"\
 637              "movq "s_offset"+8(%%"REG_S"), %%xmm4 \n\t"\
 638              "punpcklbw %%xmm7, %%xmm0       \n\t"\
 639              "punpcklbw %%xmm7, %%xmm4       \n\t"\
 640              "pmullw %%xmm0, %%"out_reg1"    \n\t"\
 641              "pmullw %%xmm4, %%"out_reg2"    \n\t"
 642
 643 #define snow_inner_add_yblock_sse2_accum_8(ptr_offset, s_offset) \
 644              snow_inner_add_yblock_sse2_start_8("xmm2", "xmm6", ptr_offset, s_offset)\
 645              "paddusw %%xmm2, %%xmm1         \n\t"\
 646              "paddusw %%xmm6, %%xmm5         \n\t"
 647
 648 #define snow_inner_add_yblock_sse2_accum_16(ptr_offset, s_offset) \
 649              snow_inner_add_yblock_sse2_start_16("xmm2", "xmm6", ptr_offset, s_offset)\
 650              "paddusw %%xmm2, %%xmm1         \n\t"\
 651              "paddusw %%xmm6, %%xmm5         \n\t"
 652
 653 #define snow_inner_add_yblock_sse2_end_common1\
 654              "add $32, %%"REG_S"             \n\t"\
 655              "add %%"REG_c", %0              \n\t"\
 656              "add %%"REG_c", "PTR_SIZE"*3(%%"REG_a");\n\t"\
 657              "add %%"REG_c", "PTR_SIZE"*2(%%"REG_a");\n\t"\
 658              "add %%"REG_c", "PTR_SIZE"*1(%%"REG_a");\n\t"\
 659              "add %%"REG_c", (%%"REG_a")     \n\t"
 660
 661 #define snow_inner_add_yblock_sse2_end_common2\
 662              "jnz 1b                         \n\t"\
 663              :"+m"(dst8),"+m"(dst_array),"=&r"(tmp)\
 664              :\
 665              "rm"((long)(src_x<<1)),"m"(obmc),"a"(block),"m"((long)b_h),"m"((long)src_stride):\
 666              "%"REG_c"","%"REG_S"","%"REG_D"","%"REG_d"");
 667
 668 #define snow_inner_add_yblock_sse2_end_8\
 669              "sal $1, %%"REG_c"              \n\t"\
 670              "add $"PTR_SIZE"*2, %1          \n\t"\
 671              snow_inner_add_yblock_sse2_end_common1\
 672              "sar $1, %%"REG_c"              \n\t"\
 673              "sub $2, %2                     \n\t"\
 674              snow_inner_add_yblock_sse2_end_common2
 675
 676 #define snow_inner_add_yblock_sse2_end_16\
 677              "add $"PTR_SIZE"*1, %1          \n\t"\
 678              snow_inner_add_yblock_sse2_end_common1\
 679              "dec %2                         \n\t"\
 680              snow_inner_add_yblock_sse2_end_common2
 681
 682 static void inner_add_yblock_bw_8_obmc_16_bh_even_sse2(const uint8_t *obmc, const long obmc_stride, uint8_t * * block, int b_w, long b_h,
 683                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 684 snow_inner_add_yblock_sse2_header
 685 snow_inner_add_yblock_sse2_start_8("xmm1", "xmm5", "3", "0")
 686 snow_inner_add_yblock_sse2_accum_8("2", "8")
 687 snow_inner_add_yblock_sse2_accum_8("1", "128")
 688 snow_inner_add_yblock_sse2_accum_8("0", "136")
 689
 690              "mov %0, %%"REG_d"              \n\t"
 691              "movdqa (%%"REG_D"), %%xmm0     \n\t"
 692              "movdqa %%xmm1, %%xmm2          \n\t"
 693
 694              "punpckhwd %%xmm7, %%xmm1       \n\t"
 695              "punpcklwd %%xmm7, %%xmm2       \n\t"
 696              "paddd %%xmm2, %%xmm0           \n\t"
 697              "movdqa 16(%%"REG_D"), %%xmm2   \n\t"
 698              "paddd %%xmm1, %%xmm2           \n\t"
 699              "paddd %%xmm3, %%xmm0           \n\t"
 700              "paddd %%xmm3, %%xmm2           \n\t"
 701
 702              "mov %1, %%"REG_D"              \n\t"
 703              "mov "PTR_SIZE"(%%"REG_D"), %%"REG_D";\n\t"
 704              "add %3, %%"REG_D"              \n\t"
 705
 706              "movdqa (%%"REG_D"), %%xmm4     \n\t"
 707              "movdqa %%xmm5, %%xmm6          \n\t"
 708              "punpckhwd %%xmm7, %%xmm5       \n\t"
 709              "punpcklwd %%xmm7, %%xmm6       \n\t"
 710              "paddd %%xmm6, %%xmm4           \n\t"
 711              "movdqa 16(%%"REG_D"), %%xmm6   \n\t"
 712              "paddd %%xmm5, %%xmm6           \n\t"
 713              "paddd %%xmm3, %%xmm4           \n\t"
 714              "paddd %%xmm3, %%xmm6           \n\t"
 715
 716              "psrad $8, %%xmm0               \n\t" /* FRAC_BITS. */
 717              "psrad $8, %%xmm2               \n\t" /* FRAC_BITS. */
 718              "packssdw %%xmm2, %%xmm0        \n\t"
 719              "packuswb %%xmm7, %%xmm0        \n\t"
 720              "movq %%xmm0, (%%"REG_d")       \n\t"
 721
 722              "psrad $8, %%xmm4               \n\t" /* FRAC_BITS. */
 723              "psrad $8, %%xmm6               \n\t" /* FRAC_BITS. */
 724              "packssdw %%xmm6, %%xmm4        \n\t"
 725              "packuswb %%xmm7, %%xmm4        \n\t"
 726              "movq %%xmm4, (%%"REG_d",%%"REG_c");\n\t"
 727 snow_inner_add_yblock_sse2_end_8
 728 }
 729
 730 static void inner_add_yblock_bw_16_obmc_32_sse2(const uint8_t *obmc, const long obmc_stride, uint8_t * * block, int b_w, long b_h,
 731                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 732 snow_inner_add_yblock_sse2_header
 733 snow_inner_add_yblock_sse2_start_16("xmm1", "xmm5", "3", "0")
 734 snow_inner_add_yblock_sse2_accum_16("2", "16")
 735 snow_inner_add_yblock_sse2_accum_16("1", "512")
 736 snow_inner_add_yblock_sse2_accum_16("0", "528")
 737
 738              "mov %0, %%"REG_d"              \n\t"
 739              "psrlw $4, %%xmm1               \n\t"
 740              "psrlw $4, %%xmm5               \n\t"
 741              "paddw   (%%"REG_D"), %%xmm1    \n\t"
 742              "paddw 16(%%"REG_D"), %%xmm5    \n\t"
 743              "paddw %%xmm3, %%xmm1           \n\t"
 744              "paddw %%xmm3, %%xmm5           \n\t"
 745              "psraw $4, %%xmm1               \n\t" /* FRAC_BITS. */
 746              "psraw $4, %%xmm5               \n\t" /* FRAC_BITS. */
 747              "packuswb %%xmm5, %%xmm1        \n\t"
 748
 749              "movdqu %%xmm1, (%%"REG_d")       \n\t"
 750
 751 snow_inner_add_yblock_sse2_end_16
 752 }
 753
 754 #define snow_inner_add_yblock_mmx_header \
 755     IDWTELEM * * dst_array = sb->line + src_y;\
 756     long tmp;\
 757     asm volatile(\
 758              "mov  %7, %%"REG_c"             \n\t"\
 759              "mov  %6, %2                    \n\t"\
 760              "mov  %4, %%"REG_S"             \n\t"\
 761              "pxor %%mm7, %%mm7              \n\t" /* 0 */\
 762              "pcmpeqd %%mm3, %%mm3           \n\t"\
 763              "psllw $15, %%mm3               \n\t"\
 764              "psrlw $12, %%mm3               \n\t" /* FRAC_BITS >> 1 */\
 765              "1:                             \n\t"\
 766              "mov %1, %%"REG_D"              \n\t"\
 767              "mov (%%"REG_D"), %%"REG_D"     \n\t"\
 768              "add %3, %%"REG_D"              \n\t"
 769
 770 #define snow_inner_add_yblock_mmx_start(out_reg1, out_reg2, ptr_offset, s_offset, d_offset)\
 771              "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
 772              "movd "d_offset"(%%"REG_d"), %%"out_reg1" \n\t"\
 773              "movd "d_offset"+4(%%"REG_d"), %%"out_reg2" \n\t"\
 774              "punpcklbw %%mm7, %%"out_reg1" \n\t"\
 775              "punpcklbw %%mm7, %%"out_reg2" \n\t"\
 776              "movd "s_offset"(%%"REG_S"), %%mm0 \n\t"\
 777              "movd "s_offset"+4(%%"REG_S"), %%mm4 \n\t"\
 778              "punpcklbw %%mm7, %%mm0       \n\t"\
 779              "punpcklbw %%mm7, %%mm4       \n\t"\
 780              "pmullw %%mm0, %%"out_reg1"    \n\t"\
 781              "pmullw %%mm4, %%"out_reg2"    \n\t"
 782
 783 #define snow_inner_add_yblock_mmx_accum(ptr_offset, s_offset, d_offset) \
 784              snow_inner_add_yblock_mmx_start("mm2", "mm6", ptr_offset, s_offset, d_offset)\
 785              "paddusw %%mm2, %%mm1         \n\t"\
 786              "paddusw %%mm6, %%mm5         \n\t"
 787
 788 #define snow_inner_add_yblock_mmx_mix(read_offset, write_offset)\
 789              "mov %0, %%"REG_d"              \n\t"\
 790              "psrlw $4, %%mm1                \n\t"\
 791              "psrlw $4, %%mm5                \n\t"\
 792              "paddw "read_offset"(%%"REG_D"), %%mm1 \n\t"\
 793              "paddw "read_offset"+8(%%"REG_D"), %%mm5 \n\t"\
 794              "paddw %%mm3, %%mm1             \n\t"\
 795              "paddw %%mm3, %%mm5             \n\t"\
 796              "psraw $4, %%mm1                \n\t"\
 797              "psraw $4, %%mm5                \n\t"\
 798              "packuswb %%mm5, %%mm1          \n\t"\
 799              "movq %%mm1, "write_offset"(%%"REG_d") \n\t"
 800
 801 #define snow_inner_add_yblock_mmx_end(s_step)\
 802              "add $"s_step", %%"REG_S"             \n\t"\
 803              "add %%"REG_c", "PTR_SIZE"*3(%%"REG_a");\n\t"\
 804              "add %%"REG_c", "PTR_SIZE"*2(%%"REG_a");\n\t"\
 805              "add %%"REG_c", "PTR_SIZE"*1(%%"REG_a");\n\t"\
 806              "add %%"REG_c", (%%"REG_a")     \n\t"\
 807              "add $"PTR_SIZE"*1, %1          \n\t"\
 808              "add %%"REG_c", %0              \n\t"\
 809              "dec %2                         \n\t"\
 810              "jnz 1b                         \n\t"\
 811              :"+m"(dst8),"+m"(dst_array),"=&r"(tmp)\
 812              :\
 813              "rm"((long)(src_x<<1)),"m"(obmc),"a"(block),"m"((long)b_h),"m"((long)src_stride):\
 814              "%"REG_c"","%"REG_S"","%"REG_D"","%"REG_d"");
 815
 816 static void inner_add_yblock_bw_8_obmc_16_mmx(const uint8_t *obmc, const long obmc_stride, uint8_t * * block, int b_w, long b_h,
 817                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 818 snow_inner_add_yblock_mmx_header
 819 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "0", "0")
 820 snow_inner_add_yblock_mmx_accum("2", "8", "0")
 821 snow_inner_add_yblock_mmx_accum("1", "128", "0")
 822 snow_inner_add_yblock_mmx_accum("0", "136", "0")
 823 snow_inner_add_yblock_mmx_mix("0", "0")
 824 snow_inner_add_yblock_mmx_end("16")
 825 }
 826
 827 static void inner_add_yblock_bw_16_obmc_32_mmx(const uint8_t *obmc, const long obmc_stride, uint8_t * * block, int b_w, long b_h,
 828                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 829 snow_inner_add_yblock_mmx_header
 830 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "0", "0")
 831 snow_inner_add_yblock_mmx_accum("2", "16", "0")
 832 snow_inner_add_yblock_mmx_accum("1", "512", "0")
 833 snow_inner_add_yblock_mmx_accum("0", "528", "0")
 834 snow_inner_add_yblock_mmx_mix("0", "0")
 835
 836 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "8", "8")
 837 snow_inner_add_yblock_mmx_accum("2", "24", "8")
 838 snow_inner_add_yblock_mmx_accum("1", "520", "8")
 839 snow_inner_add_yblock_mmx_accum("0", "536", "8")
 840 snow_inner_add_yblock_mmx_mix("16", "8")
 841 snow_inner_add_yblock_mmx_end("32")
 842 }
 843
 844 void ff_snow_inner_add_yblock_sse2(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
 845                            int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 846
 847     if (b_w == 16)
 848         inner_add_yblock_bw_16_obmc_32_sse2(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
 849     else if (b_w == 8 && obmc_stride == 16) {
 850         if (!(b_h & 1))
 851             inner_add_yblock_bw_8_obmc_16_bh_even_sse2(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
 852         else
 853             inner_add_yblock_bw_8_obmc_16_mmx(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
 854     } else
 855          ff_snow_inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
 856 }
 857
 858 void ff_snow_inner_add_yblock_mmx(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
 859                           int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 860     if (b_w == 16)
 861         inner_add_yblock_bw_16_obmc_32_mmx(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
 862     else if (b_w == 8 && obmc_stride == 16)
 863         inner_add_yblock_bw_8_obmc_16_mmx(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
 864     else
 865         ff_snow_inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
 866 }