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             "pcmpeqd   %%xmm3, %%xmm3         \n\t"
  46             "psllw         $1, %%xmm3         \n\t"
  47             "paddw     %%xmm7, %%xmm3         \n\t"
  48             "psrlw        $13, %%xmm3         \n\t"
  49         ::);
  50         for(; i<w_l-15; i+=16){
  51             asm volatile(
  52                 "movdqu   (%1), %%xmm1        \n\t"
  53                 "movdqu 16(%1), %%xmm5        \n\t"
  54                 "movdqu  2(%1), %%xmm2        \n\t"
  55                 "movdqu 18(%1), %%xmm6        \n\t"
  56                 "paddw  %%xmm1, %%xmm2        \n\t"
  57                 "paddw  %%xmm5, %%xmm6        \n\t"
  58                 "paddw  %%xmm7, %%xmm2        \n\t"
  59                 "paddw  %%xmm7, %%xmm6        \n\t"
  60                 "pmulhw %%xmm3, %%xmm2        \n\t"
  61                 "pmulhw %%xmm3, %%xmm6        \n\t"
  62                 "paddw    (%0), %%xmm2        \n\t"
  63                 "paddw  16(%0), %%xmm6        \n\t"
  64                 "movdqa %%xmm2, (%0)          \n\t"
  65                 "movdqa %%xmm6, 16(%0)        \n\t"
  66                 :: "r"(&b[i]), "r"(&ref[i])
  67                 : "memory"
  68             );
  69         }
  70         snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS);
  71         b[0] = b_0 - ((W_DM * 2 * ref[1]+W_DO)>>W_DS);
  72     }
  73
  74     { // Lift 1
  75         IDWTELEM * const dst = b+w2;
  76
  77         i = 0;
  78         for(; (((long)&dst[i]) & 0x1F) && i<w_r; i++){
  79             dst[i] = dst[i] - (b[i] + b[i + 1]);
  80         }
  81         for(; i<w_r-15; i+=16){
  82             asm volatile(
  83                 "movdqu   (%1), %%xmm1        \n\t"
  84                 "movdqu 16(%1), %%xmm5        \n\t"
  85                 "movdqu  2(%1), %%xmm2        \n\t"
  86                 "movdqu 18(%1), %%xmm6        \n\t"
  87                 "paddw  %%xmm1, %%xmm2        \n\t"
  88                 "paddw  %%xmm5, %%xmm6        \n\t"
  89                 "movdqa   (%0), %%xmm0        \n\t"
  90                 "movdqa 16(%0), %%xmm4        \n\t"
  91                 "psubw  %%xmm2, %%xmm0        \n\t"
  92                 "psubw  %%xmm6, %%xmm4        \n\t"
  93                 "movdqa %%xmm0, (%0)          \n\t"
  94                 "movdqa %%xmm4, 16(%0)        \n\t"
  95                 :: "r"(&dst[i]), "r"(&b[i])
  96                 : "memory"
  97             );
  98         }
  99         snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS);
 100     }
 101
 102     { // Lift 2
 103         IDWTELEM * const ref = b+w2 - 1;
 104         IDWTELEM b_0 = b[0];
 105
 106         i = 0;
 107         asm volatile(
 108             "psllw         $15, %%xmm7        \n\t"
 109             "pcmpeqw    %%xmm6, %%xmm6        \n\t"
 110             "psrlw         $13, %%xmm6        \n\t"
 111             "paddw      %%xmm7, %%xmm6        \n\t"
 112         ::);
 113         for(; i<w_l-15; i+=16){
 114             asm volatile(
 115                 "movdqu   (%1), %%xmm0        \n\t"
 116                 "movdqu 16(%1), %%xmm4        \n\t"
 117                 "movdqu  2(%1), %%xmm1        \n\t"
 118                 "movdqu 18(%1), %%xmm5        \n\t" //FIXME try aligned reads and shifts
 119                 "paddw  %%xmm6, %%xmm0        \n\t"
 120                 "paddw  %%xmm6, %%xmm4        \n\t"
 121                 "paddw  %%xmm7, %%xmm1        \n\t"
 122                 "paddw  %%xmm7, %%xmm5        \n\t"
 123                 "pavgw  %%xmm1, %%xmm0        \n\t"
 124                 "pavgw  %%xmm5, %%xmm4        \n\t"
 125                 "psubw  %%xmm7, %%xmm0        \n\t"
 126                 "psubw  %%xmm7, %%xmm4        \n\t"
 127                 "psraw      $1, %%xmm0        \n\t"
 128                 "psraw      $1, %%xmm4        \n\t"
 129                 "movdqa   (%0), %%xmm1        \n\t"
 130                 "movdqa 16(%0), %%xmm5        \n\t"
 131                 "paddw  %%xmm1, %%xmm0        \n\t"
 132                 "paddw  %%xmm5, %%xmm4        \n\t"
 133                 "psraw      $2, %%xmm0        \n\t"
 134                 "psraw      $2, %%xmm4        \n\t"
 135                 "paddw  %%xmm1, %%xmm0        \n\t"
 136                 "paddw  %%xmm5, %%xmm4        \n\t"
 137                 "movdqa %%xmm0, (%0)          \n\t"
 138                 "movdqa %%xmm4, 16(%0)        \n\t"
 139                 :: "r"(&b[i]), "r"(&ref[i])
 140                 : "memory"
 141             );
 142         }
 143         snow_horizontal_compose_liftS_lead_out(i, b, b, ref, width, w_l);
 144         b[0] = b_0 + ((2 * ref[1] + W_BO-1 + 4 * b_0) >> W_BS);
 145     }
 146
 147     { // Lift 3
 148         IDWTELEM * const src = b+w2;
 149
 150         i = 0;
 151         for(; (((long)&temp[i]) & 0x1F) && i<w_r; i++){
 152             temp[i] = src[i] - ((-W_AM*(b[i] + b[i+1]))>>W_AS);
 153         }
 154         for(; i<w_r-7; i+=8){
 155             asm volatile(
 156                 "movdqu  2(%1), %%xmm2        \n\t"
 157                 "movdqu 18(%1), %%xmm6        \n\t"
 158                 "paddw    (%1), %%xmm2        \n\t"
 159                 "paddw  16(%1), %%xmm6        \n\t"
 160                 "movdqu   (%0), %%xmm0        \n\t"
 161                 "movdqu 16(%0), %%xmm4        \n\t"
 162                 "paddw  %%xmm2, %%xmm0        \n\t"
 163                 "paddw  %%xmm6, %%xmm4        \n\t"
 164                 "psraw      $1, %%xmm2        \n\t"
 165                 "psraw      $1, %%xmm6        \n\t"
 166                 "paddw  %%xmm0, %%xmm2        \n\t"
 167                 "paddw  %%xmm4, %%xmm6        \n\t"
 168                 "movdqa %%xmm2, (%2)          \n\t"
 169                 "movdqa %%xmm6, 16(%2)        \n\t"
 170                 :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i])
 171                  : "memory"
 172                );
 173         }
 174         snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO+1, W_AS);
 175     }
 176
 177     {
 178         snow_interleave_line_header(&i, width, b, temp);
 179
 180         for (; (i & 0x3E) != 0x3E; i-=2){
 181             b[i+1] = temp[i>>1];
 182             b[i] = b[i>>1];
 183         }
 184         for (i-=62; i>=0; i-=64){
 185             asm volatile(
 186                 "movdqa      (%1), %%xmm0       \n\t"
 187                 "movdqa    16(%1), %%xmm2       \n\t"
 188                 "movdqa    32(%1), %%xmm4       \n\t"
 189                 "movdqa    48(%1), %%xmm6       \n\t"
 190                 "movdqa      (%1), %%xmm1       \n\t"
 191                 "movdqa    16(%1), %%xmm3       \n\t"
 192                 "movdqa    32(%1), %%xmm5       \n\t"
 193                 "movdqa    48(%1), %%xmm7       \n\t"
 194                 "punpcklwd   (%2), %%xmm0       \n\t"
 195                 "punpcklwd 16(%2), %%xmm2       \n\t"
 196                 "punpcklwd 32(%2), %%xmm4       \n\t"
 197                 "punpcklwd 48(%2), %%xmm6       \n\t"
 198                 "movdqa    %%xmm0, (%0)         \n\t"
 199                 "movdqa    %%xmm2, 32(%0)       \n\t"
 200                 "movdqa    %%xmm4, 64(%0)       \n\t"
 201                 "movdqa    %%xmm6, 96(%0)       \n\t"
 202                 "punpckhwd   (%2), %%xmm1       \n\t"
 203                 "punpckhwd 16(%2), %%xmm3       \n\t"
 204                 "punpckhwd 32(%2), %%xmm5       \n\t"
 205                 "punpckhwd 48(%2), %%xmm7       \n\t"
 206                 "movdqa    %%xmm1, 16(%0)       \n\t"
 207                 "movdqa    %%xmm3, 48(%0)       \n\t"
 208                 "movdqa    %%xmm5, 80(%0)       \n\t"
 209                 "movdqa    %%xmm7, 112(%0)      \n\t"
 210                 :: "r"(&(b)[i]), "r"(&(b)[i>>1]), "r"(&(temp)[i>>1])
 211                  : "memory"
 212                );
 213         }
 214     }
 215 }
 216
 217 void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, int width){
 218     const int w2= (width+1)>>1;
 219     IDWTELEM temp[width >> 1];
 220     const int w_l= (width>>1);
 221     const int w_r= w2 - 1;
 222     int i;
 223
 224     { // Lift 0
 225         IDWTELEM * const ref = b + w2 - 1;
 226
 227         i = 1;
 228         b[0] = b[0] - ((W_DM * 2 * ref[1]+W_DO)>>W_DS);
 229         asm volatile(
 230             "pcmpeqw    %%mm7, %%mm7         \n\t"
 231             "pcmpeqw    %%mm3, %%mm3         \n\t"
 232             "psllw         $1, %%mm3         \n\t"
 233             "paddw      %%mm7, %%mm3         \n\t"
 234             "psllw        $13, %%mm3         \n\t"
 235            ::);
 236         for(; i<w_l-7; i+=8){
 237             asm volatile(
 238                 "movq     (%1), %%mm2        \n\t"
 239                 "movq    8(%1), %%mm6        \n\t"
 240                 "paddw   2(%1), %%mm2        \n\t"
 241                 "paddw  10(%1), %%mm6        \n\t"
 242                 "paddw   %%mm7, %%mm2        \n\t"
 243                 "paddw   %%mm7, %%mm6        \n\t"
 244                 "pmulhw  %%mm3, %%mm2        \n\t"
 245                 "pmulhw  %%mm3, %%mm6        \n\t"
 246                 "paddw    (%0), %%mm2        \n\t"
 247                 "paddw   8(%0), %%mm6        \n\t"
 248                 "movq    %%mm2, (%0)         \n\t"
 249                 "movq    %%mm6, 8(%0)        \n\t"
 250                 :: "r"(&b[i]), "r"(&ref[i])
 251                  : "memory"
 252                );
 253         }
 254         snow_horizontal_compose_lift_lead_out(i, b, b, ref, width, w_l, 0, W_DM, W_DO, W_DS);
 255     }
 256
 257     { // Lift 1
 258         IDWTELEM * const dst = b+w2;
 259
 260         i = 0;
 261         for(; i<w_r-7; i+=8){
 262             asm volatile(
 263                 "movq     (%1), %%mm2        \n\t"
 264                 "movq    8(%1), %%mm6        \n\t"
 265                 "paddw   2(%1), %%mm2        \n\t"
 266                 "paddw  10(%1), %%mm6        \n\t"
 267                 "movq     (%0), %%mm0        \n\t"
 268                 "movq    8(%0), %%mm4        \n\t"
 269                 "psubw   %%mm2, %%mm0        \n\t"
 270                 "psubw   %%mm6, %%mm4        \n\t"
 271                 "movq    %%mm0, (%0)         \n\t"
 272                 "movq    %%mm4, 8(%0)        \n\t"
 273                 :: "r"(&dst[i]), "r"(&b[i])
 274                  : "memory"
 275                );
 276         }
 277         snow_horizontal_compose_lift_lead_out(i, dst, dst, b, width, w_r, 1, W_CM, W_CO, W_CS);
 278     }
 279
 280     { // Lift 2
 281         IDWTELEM * const ref = b+w2 - 1;
 282
 283         i = 1;
 284         b[0] = b[0] + (((2 * ref[1] + W_BO) + 4 * b[0]) >> W_BS);
 285         asm volatile(
 286             "psllw         $15, %%mm7        \n\t"
 287             "pcmpeqw     %%mm6, %%mm6        \n\t"
 288             "psrlw         $13, %%mm6        \n\t"
 289             "paddw       %%mm7, %%mm6        \n\t"
 290            ::);
 291         for(; i<w_l-7; i+=8){
 292             asm volatile(
 293                 "movq     (%1), %%mm0        \n\t"
 294                 "movq    8(%1), %%mm4        \n\t"
 295                 "movq    2(%1), %%mm1        \n\t"
 296                 "movq   10(%1), %%mm5        \n\t"
 297                 "paddw   %%mm6, %%mm0        \n\t"
 298                 "paddw   %%mm6, %%mm4        \n\t"
 299                 "paddw   %%mm7, %%mm1        \n\t"
 300                 "paddw   %%mm7, %%mm5        \n\t"
 301                 "pavgw   %%mm1, %%mm0        \n\t"
 302                 "pavgw   %%mm5, %%mm4        \n\t"
 303                 "psubw   %%mm7, %%mm0        \n\t"
 304                 "psubw   %%mm7, %%mm4        \n\t"
 305                 "psraw      $1, %%mm0        \n\t"
 306                 "psraw      $1, %%mm4        \n\t"
 307                 "movq     (%0), %%mm1        \n\t"
 308                 "movq    8(%0), %%mm5        \n\t"
 309                 "paddw   %%mm1, %%mm0        \n\t"
 310                 "paddw   %%mm5, %%mm4        \n\t"
 311                 "psraw      $2, %%mm0        \n\t"
 312                 "psraw      $2, %%mm4        \n\t"
 313                 "paddw   %%mm1, %%mm0        \n\t"
 314                 "paddw   %%mm5, %%mm4        \n\t"
 315                 "movq    %%mm0, (%0)         \n\t"
 316                 "movq    %%mm4, 8(%0)        \n\t"
 317                 :: "r"(&b[i]), "r"(&ref[i])
 318                  : "memory"
 319                );
 320         }
 321         snow_horizontal_compose_liftS_lead_out(i, b, b, ref, width, w_l);
 322     }
 323
 324     { // Lift 3
 325         IDWTELEM * const src = b+w2;
 326         i = 0;
 327
 328         for(; i<w_r-7; i+=8){
 329             asm volatile(
 330                 "movq    2(%1), %%mm2        \n\t"
 331                 "movq   10(%1), %%mm6        \n\t"
 332                 "paddw    (%1), %%mm2        \n\t"
 333                 "paddw   8(%1), %%mm6        \n\t"
 334                 "movq     (%0), %%mm0        \n\t"
 335                 "movq    8(%0), %%mm4        \n\t"
 336                 "paddw   %%mm2, %%mm0        \n\t"
 337                 "paddw   %%mm6, %%mm4        \n\t"
 338                 "psraw      $1, %%mm2        \n\t"
 339                 "psraw      $1, %%mm6        \n\t"
 340                 "paddw   %%mm0, %%mm2        \n\t"
 341                 "paddw   %%mm4, %%mm6        \n\t"
 342                 "movq    %%mm2, (%2)         \n\t"
 343                 "movq    %%mm6, 8(%2)        \n\t"
 344                 :: "r"(&src[i]), "r"(&b[i]), "r"(&temp[i])
 345                  : "memory"
 346                );
 347         }
 348         snow_horizontal_compose_lift_lead_out(i, temp, src, b, width, w_r, 1, -W_AM, W_AO+1, W_AS);
 349     }
 350
 351     {
 352         snow_interleave_line_header(&i, width, b, temp);
 353
 354         for (; (i & 0x1E) != 0x1E; i-=2){
 355             b[i+1] = temp[i>>1];
 356             b[i] = b[i>>1];
 357         }
 358         for (i-=30; i>=0; i-=32){
 359             asm volatile(
 360                 "movq        (%1), %%mm0       \n\t"
 361                 "movq       8(%1), %%mm2       \n\t"
 362                 "movq      16(%1), %%mm4       \n\t"
 363                 "movq      24(%1), %%mm6       \n\t"
 364                 "movq        (%1), %%mm1       \n\t"
 365                 "movq       8(%1), %%mm3       \n\t"
 366                 "movq      16(%1), %%mm5       \n\t"
 367                 "movq      24(%1), %%mm7       \n\t"
 368                 "punpcklwd   (%2), %%mm0       \n\t"
 369                 "punpcklwd  8(%2), %%mm2       \n\t"
 370                 "punpcklwd 16(%2), %%mm4       \n\t"
 371                 "punpcklwd 24(%2), %%mm6       \n\t"
 372                 "movq       %%mm0, (%0)        \n\t"
 373                 "movq       %%mm2, 16(%0)      \n\t"
 374                 "movq       %%mm4, 32(%0)      \n\t"
 375                 "movq       %%mm6, 48(%0)      \n\t"
 376                 "punpckhwd   (%2), %%mm1       \n\t"
 377                 "punpckhwd  8(%2), %%mm3       \n\t"
 378                 "punpckhwd 16(%2), %%mm5       \n\t"
 379                 "punpckhwd 24(%2), %%mm7       \n\t"
 380                 "movq       %%mm1, 8(%0)       \n\t"
 381                 "movq       %%mm3, 24(%0)      \n\t"
 382                 "movq       %%mm5, 40(%0)      \n\t"
 383                 "movq       %%mm7, 56(%0)      \n\t"
 384                 :: "r"(&b[i]), "r"(&b[i>>1]), "r"(&temp[i>>1])
 385                  : "memory"
 386                );
 387         }
 388     }
 389 }
 390
 391 #ifdef CONFIG_7REGS
 392 #define snow_vertical_compose_sse2_load_add(op,r,t0,t1,t2,t3)\
 393         ""op" ("r",%%"REG_d"), %%"t0"      \n\t"\
 394         ""op" 16("r",%%"REG_d"), %%"t1"    \n\t"\
 395         ""op" 32("r",%%"REG_d"), %%"t2"    \n\t"\
 396         ""op" 48("r",%%"REG_d"), %%"t3"    \n\t"
 397
 398 #define snow_vertical_compose_sse2_load(r,t0,t1,t2,t3)\
 399         snow_vertical_compose_sse2_load_add("movdqa",r,t0,t1,t2,t3)
 400
 401 #define snow_vertical_compose_sse2_add(r,t0,t1,t2,t3)\
 402         snow_vertical_compose_sse2_load_add("paddw",r,t0,t1,t2,t3)
 403
 404 #define snow_vertical_compose_r2r_sub(s0,s1,s2,s3,t0,t1,t2,t3)\
 405         "psubw %%"s0", %%"t0" \n\t"\
 406         "psubw %%"s1", %%"t1" \n\t"\
 407         "psubw %%"s2", %%"t2" \n\t"\
 408         "psubw %%"s3", %%"t3" \n\t"
 409
 410 #define snow_vertical_compose_sse2_store(w,s0,s1,s2,s3)\
 411         "movdqa %%"s0", ("w",%%"REG_d")      \n\t"\
 412         "movdqa %%"s1", 16("w",%%"REG_d")    \n\t"\
 413         "movdqa %%"s2", 32("w",%%"REG_d")    \n\t"\
 414         "movdqa %%"s3", 48("w",%%"REG_d")    \n\t"
 415
 416 #define snow_vertical_compose_sra(n,t0,t1,t2,t3)\
 417         "psraw $"n", %%"t0" \n\t"\
 418         "psraw $"n", %%"t1" \n\t"\
 419         "psraw $"n", %%"t2" \n\t"\
 420         "psraw $"n", %%"t3" \n\t"
 421
 422 #define snow_vertical_compose_r2r_add(s0,s1,s2,s3,t0,t1,t2,t3)\
 423         "paddw %%"s0", %%"t0" \n\t"\
 424         "paddw %%"s1", %%"t1" \n\t"\
 425         "paddw %%"s2", %%"t2" \n\t"\
 426         "paddw %%"s3", %%"t3" \n\t"
 427
 428 #define snow_vertical_compose_r2r_pmulhw(s0,s1,s2,s3,t0,t1,t2,t3)\
 429         "pmulhw %%"s0", %%"t0" \n\t"\
 430         "pmulhw %%"s1", %%"t1" \n\t"\
 431         "pmulhw %%"s2", %%"t2" \n\t"\
 432         "pmulhw %%"s3", %%"t3" \n\t"
 433
 434 #define snow_vertical_compose_sse2_move(s0,s1,s2,s3,t0,t1,t2,t3)\
 435         "movdqa %%"s0", %%"t0" \n\t"\
 436         "movdqa %%"s1", %%"t1" \n\t"\
 437         "movdqa %%"s2", %%"t2" \n\t"\
 438         "movdqa %%"s3", %%"t3" \n\t"
 439
 440 void ff_snow_vertical_compose97i_sse2(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){
 441     long i = width;
 442
 443     while(i & 0x1F)
 444     {
 445         i--;
 446         b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
 447         b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
 448         b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
 449         b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
 450     }
 451     i+=i;
 452
 453          asm volatile (
 454         "jmp 2f                                      \n\t"
 455         "1:                                          \n\t"
 456         snow_vertical_compose_sse2_load("%4","xmm0","xmm2","xmm4","xmm6")
 457         snow_vertical_compose_sse2_add("%6","xmm0","xmm2","xmm4","xmm6")
 458
 459
 460         "pcmpeqw    %%xmm0, %%xmm0                   \n\t"
 461         "pcmpeqw    %%xmm2, %%xmm2                   \n\t"
 462         "paddw      %%xmm2, %%xmm2                   \n\t"
 463         "paddw      %%xmm0, %%xmm2                   \n\t"
 464         "psllw         $13, %%xmm2                   \n\t"
 465         snow_vertical_compose_r2r_add("xmm0","xmm0","xmm0","xmm0","xmm1","xmm3","xmm5","xmm7")
 466         snow_vertical_compose_r2r_pmulhw("xmm2","xmm2","xmm2","xmm2","xmm1","xmm3","xmm5","xmm7")
 467         snow_vertical_compose_sse2_add("%5","xmm1","xmm3","xmm5","xmm7")
 468         snow_vertical_compose_sse2_store("%5","xmm1","xmm3","xmm5","xmm7")
 469         snow_vertical_compose_sse2_load("%4","xmm0","xmm2","xmm4","xmm6")
 470         snow_vertical_compose_sse2_add("%3","xmm1","xmm3","xmm5","xmm7")
 471         snow_vertical_compose_r2r_sub("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
 472         snow_vertical_compose_sse2_store("%4","xmm0","xmm2","xmm4","xmm6")
 473
 474         "pcmpeqw %%xmm7, %%xmm7                      \n\t"
 475         "pcmpeqw %%xmm5, %%xmm5                      \n\t"
 476         "psllw $15, %%xmm7                           \n\t"
 477         "psrlw $13, %%xmm5                           \n\t"
 478         "paddw %%xmm7, %%xmm5                        \n\t"
 479         snow_vertical_compose_r2r_add("xmm5","xmm5","xmm5","xmm5","xmm0","xmm2","xmm4","xmm6")
 480         "movq   (%2,%%"REG_d"), %%xmm1        \n\t"
 481         "movq  8(%2,%%"REG_d"), %%xmm3        \n\t"
 482         "paddw %%xmm7, %%xmm1                        \n\t"
 483         "paddw %%xmm7, %%xmm3                        \n\t"
 484         "pavgw %%xmm1, %%xmm0                        \n\t"
 485         "pavgw %%xmm3, %%xmm2                        \n\t"
 486         "movq 16(%2,%%"REG_d"), %%xmm1        \n\t"
 487         "movq 24(%2,%%"REG_d"), %%xmm3        \n\t"
 488         "paddw %%xmm7, %%xmm1                        \n\t"
 489         "paddw %%xmm7, %%xmm3                        \n\t"
 490         "pavgw %%xmm1, %%xmm4                        \n\t"
 491         "pavgw %%xmm3, %%xmm6                        \n\t"
 492         snow_vertical_compose_r2r_sub("xmm7","xmm7","xmm7","xmm7","xmm0","xmm2","xmm4","xmm6")
 493         snow_vertical_compose_sra("1","xmm0","xmm2","xmm4","xmm6")
 494         snow_vertical_compose_sse2_add("%3","xmm0","xmm2","xmm4","xmm6")
 495
 496         snow_vertical_compose_sra("2","xmm0","xmm2","xmm4","xmm6")
 497         snow_vertical_compose_sse2_add("%3","xmm0","xmm2","xmm4","xmm6")
 498         snow_vertical_compose_sse2_store("%3","xmm0","xmm2","xmm4","xmm6")
 499         snow_vertical_compose_sse2_add("%1","xmm0","xmm2","xmm4","xmm6")
 500         snow_vertical_compose_sse2_move("xmm0","xmm2","xmm4","xmm6","xmm1","xmm3","xmm5","xmm7")
 501         snow_vertical_compose_sra("1","xmm0","xmm2","xmm4","xmm6")
 502         snow_vertical_compose_r2r_add("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6")
 503         snow_vertical_compose_sse2_add("%2","xmm0","xmm2","xmm4","xmm6")
 504         snow_vertical_compose_sse2_store("%2","xmm0","xmm2","xmm4","xmm6")
 505
 506         "2:                                          \n\t"
 507         "sub $64, %%"REG_d"                          \n\t"
 508         "jge 1b                                      \n\t"
 509         :"+d"(i)
 510         :"r"(b0),"r"(b1),"r"(b2),"r"(b3),"r"(b4),"r"(b5));
 511 }
 512
 513 #define snow_vertical_compose_mmx_load_add(op,r,t0,t1,t2,t3)\
 514         ""op" ("r",%%"REG_d"), %%"t0"   \n\t"\
 515         ""op" 8("r",%%"REG_d"), %%"t1"  \n\t"\
 516         ""op" 16("r",%%"REG_d"), %%"t2" \n\t"\
 517         ""op" 24("r",%%"REG_d"), %%"t3" \n\t"
 518
 519 #define snow_vertical_compose_mmx_load(r,t0,t1,t2,t3)\
 520         snow_vertical_compose_mmx_load_add("movq",r,t0,t1,t2,t3)
 521
 522 #define snow_vertical_compose_mmx_add(r,t0,t1,t2,t3)\
 523         snow_vertical_compose_mmx_load_add("paddw",r,t0,t1,t2,t3)
 524
 525 #define snow_vertical_compose_mmx_store(w,s0,s1,s2,s3)\
 526         "movq %%"s0", ("w",%%"REG_d")   \n\t"\
 527         "movq %%"s1", 8("w",%%"REG_d")  \n\t"\
 528         "movq %%"s2", 16("w",%%"REG_d") \n\t"\
 529         "movq %%"s3", 24("w",%%"REG_d") \n\t"
 530
 531 #define snow_vertical_compose_mmx_move(s0,s1,s2,s3,t0,t1,t2,t3)\
 532         "movq %%"s0", %%"t0" \n\t"\
 533         "movq %%"s1", %%"t1" \n\t"\
 534         "movq %%"s2", %%"t2" \n\t"\
 535         "movq %%"s3", %%"t3" \n\t"
 536
 537
 538 void ff_snow_vertical_compose97i_mmx(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){
 539     long i = width;
 540     while(i & 15)
 541     {
 542         i--;
 543         b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS;
 544         b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS;
 545         b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS;
 546         b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
 547     }
 548     i+=i;
 549     asm volatile(
 550         "jmp 2f                                      \n\t"
 551         "1:                                          \n\t"
 552
 553         snow_vertical_compose_mmx_load("%4","mm1","mm3","mm5","mm7")
 554         snow_vertical_compose_mmx_add("%6","mm1","mm3","mm5","mm7")
 555         "pcmpeqw    %%mm0, %%mm0                     \n\t"
 556         "pcmpeqw    %%mm2, %%mm2                     \n\t"
 557         "paddw      %%mm2, %%mm2                     \n\t"
 558         "paddw      %%mm0, %%mm2                     \n\t"
 559         "psllw        $13, %%mm2                     \n\t"
 560         snow_vertical_compose_r2r_add("mm0","mm0","mm0","mm0","mm1","mm3","mm5","mm7")
 561         snow_vertical_compose_r2r_pmulhw("mm2","mm2","mm2","mm2","mm1","mm3","mm5","mm7")
 562         snow_vertical_compose_mmx_add("%5","mm1","mm3","mm5","mm7")
 563         snow_vertical_compose_mmx_store("%5","mm1","mm3","mm5","mm7")
 564         snow_vertical_compose_mmx_load("%4","mm0","mm2","mm4","mm6")
 565         snow_vertical_compose_mmx_add("%3","mm1","mm3","mm5","mm7")
 566         snow_vertical_compose_r2r_sub("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
 567         snow_vertical_compose_mmx_store("%4","mm0","mm2","mm4","mm6")
 568         "pcmpeqw %%mm7, %%mm7                        \n\t"
 569         "pcmpeqw %%mm5, %%mm5                        \n\t"
 570         "psllw $15, %%mm7                            \n\t"
 571         "psrlw $13, %%mm5                            \n\t"
 572         "paddw %%mm7, %%mm5                          \n\t"
 573         snow_vertical_compose_r2r_add("mm5","mm5","mm5","mm5","mm0","mm2","mm4","mm6")
 574         "movq   (%2,%%"REG_d"), %%mm1         \n\t"
 575         "movq  8(%2,%%"REG_d"), %%mm3         \n\t"
 576         "paddw %%mm7, %%mm1                          \n\t"
 577         "paddw %%mm7, %%mm3                          \n\t"
 578         "pavgw %%mm1, %%mm0                          \n\t"
 579         "pavgw %%mm3, %%mm2                          \n\t"
 580         "movq 16(%2,%%"REG_d"), %%mm1         \n\t"
 581         "movq 24(%2,%%"REG_d"), %%mm3         \n\t"
 582         "paddw %%mm7, %%mm1                          \n\t"
 583         "paddw %%mm7, %%mm3                          \n\t"
 584         "pavgw %%mm1, %%mm4                          \n\t"
 585         "pavgw %%mm3, %%mm6                          \n\t"
 586         snow_vertical_compose_r2r_sub("mm7","mm7","mm7","mm7","mm0","mm2","mm4","mm6")
 587         snow_vertical_compose_sra("1","mm0","mm2","mm4","mm6")
 588         snow_vertical_compose_mmx_add("%3","mm0","mm2","mm4","mm6")
 589
 590         snow_vertical_compose_sra("2","mm0","mm2","mm4","mm6")
 591         snow_vertical_compose_mmx_add("%3","mm0","mm2","mm4","mm6")
 592         snow_vertical_compose_mmx_store("%3","mm0","mm2","mm4","mm6")
 593         snow_vertical_compose_mmx_add("%1","mm0","mm2","mm4","mm6")
 594         snow_vertical_compose_mmx_move("mm0","mm2","mm4","mm6","mm1","mm3","mm5","mm7")
 595         snow_vertical_compose_sra("1","mm0","mm2","mm4","mm6")
 596         snow_vertical_compose_r2r_add("mm1","mm3","mm5","mm7","mm0","mm2","mm4","mm6")
 597         snow_vertical_compose_mmx_add("%2","mm0","mm2","mm4","mm6")
 598         snow_vertical_compose_mmx_store("%2","mm0","mm2","mm4","mm6")
 599
 600         "2:                                          \n\t"
 601         "sub $32, %%"REG_d"                          \n\t"
 602         "jge 1b                                      \n\t"
 603         :"+d"(i)
 604         :"r"(b0),"r"(b1),"r"(b2),"r"(b3),"r"(b4),"r"(b5));
 605 }
 606 #endif //CONFIG_7REGS
 607
 608 #define snow_inner_add_yblock_sse2_header \
 609     IDWTELEM * * dst_array = sb->line + src_y;\
 610     long tmp;\
 611     asm volatile(\
 612              "mov  %7, %%"REG_c"             \n\t"\
 613              "mov  %6, %2                    \n\t"\
 614              "mov  %4, %%"REG_S"             \n\t"\
 615              "pxor %%xmm7, %%xmm7            \n\t" /* 0 */\
 616              "pcmpeqd %%xmm3, %%xmm3         \n\t"\
 617              "psllw $15, %%xmm3              \n\t"\
 618              "psrlw $12, %%xmm3              \n\t" /* FRAC_BITS >> 1 */\
 619              "1:                             \n\t"\
 620              "mov %1, %%"REG_D"              \n\t"\
 621              "mov (%%"REG_D"), %%"REG_D"     \n\t"\
 622              "add %3, %%"REG_D"              \n\t"
 623
 624 #define snow_inner_add_yblock_sse2_start_8(out_reg1, out_reg2, ptr_offset, s_offset)\
 625              "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
 626              "movq (%%"REG_d"), %%"out_reg1" \n\t"\
 627              "movq (%%"REG_d", %%"REG_c"), %%"out_reg2" \n\t"\
 628              "punpcklbw %%xmm7, %%"out_reg1" \n\t"\
 629              "punpcklbw %%xmm7, %%"out_reg2" \n\t"\
 630              "movq "s_offset"(%%"REG_S"), %%xmm0 \n\t"\
 631              "movq "s_offset"+16(%%"REG_S"), %%xmm4 \n\t"\
 632              "punpcklbw %%xmm7, %%xmm0       \n\t"\
 633              "punpcklbw %%xmm7, %%xmm4       \n\t"\
 634              "pmullw %%xmm0, %%"out_reg1"    \n\t"\
 635              "pmullw %%xmm4, %%"out_reg2"    \n\t"
 636
 637 #define snow_inner_add_yblock_sse2_start_16(out_reg1, out_reg2, ptr_offset, s_offset)\
 638              "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
 639              "movq (%%"REG_d"), %%"out_reg1" \n\t"\
 640              "movq 8(%%"REG_d"), %%"out_reg2" \n\t"\
 641              "punpcklbw %%xmm7, %%"out_reg1" \n\t"\
 642              "punpcklbw %%xmm7, %%"out_reg2" \n\t"\
 643              "movq "s_offset"(%%"REG_S"), %%xmm0 \n\t"\
 644              "movq "s_offset"+8(%%"REG_S"), %%xmm4 \n\t"\
 645              "punpcklbw %%xmm7, %%xmm0       \n\t"\
 646              "punpcklbw %%xmm7, %%xmm4       \n\t"\
 647              "pmullw %%xmm0, %%"out_reg1"    \n\t"\
 648              "pmullw %%xmm4, %%"out_reg2"    \n\t"
 649
 650 #define snow_inner_add_yblock_sse2_accum_8(ptr_offset, s_offset) \
 651              snow_inner_add_yblock_sse2_start_8("xmm2", "xmm6", ptr_offset, s_offset)\
 652              "paddusw %%xmm2, %%xmm1         \n\t"\
 653              "paddusw %%xmm6, %%xmm5         \n\t"
 654
 655 #define snow_inner_add_yblock_sse2_accum_16(ptr_offset, s_offset) \
 656              snow_inner_add_yblock_sse2_start_16("xmm2", "xmm6", ptr_offset, s_offset)\
 657              "paddusw %%xmm2, %%xmm1         \n\t"\
 658              "paddusw %%xmm6, %%xmm5         \n\t"
 659
 660 #define snow_inner_add_yblock_sse2_end_common1\
 661              "add $32, %%"REG_S"             \n\t"\
 662              "add %%"REG_c", %0              \n\t"\
 663              "add %%"REG_c", "PTR_SIZE"*3(%%"REG_a");\n\t"\
 664              "add %%"REG_c", "PTR_SIZE"*2(%%"REG_a");\n\t"\
 665              "add %%"REG_c", "PTR_SIZE"*1(%%"REG_a");\n\t"\
 666              "add %%"REG_c", (%%"REG_a")     \n\t"
 667
 668 #define snow_inner_add_yblock_sse2_end_common2\
 669              "jnz 1b                         \n\t"\
 670              :"+m"(dst8),"+m"(dst_array),"=&r"(tmp)\
 671              :\
 672              "rm"((long)(src_x<<1)),"m"(obmc),"a"(block),"m"((long)b_h),"m"((long)src_stride):\
 673              "%"REG_c"","%"REG_S"","%"REG_D"","%"REG_d"");
 674
 675 #define snow_inner_add_yblock_sse2_end_8\
 676              "sal $1, %%"REG_c"              \n\t"\
 677              "add $"PTR_SIZE"*2, %1          \n\t"\
 678              snow_inner_add_yblock_sse2_end_common1\
 679              "sar $1, %%"REG_c"              \n\t"\
 680              "sub $2, %2                     \n\t"\
 681              snow_inner_add_yblock_sse2_end_common2
 682
 683 #define snow_inner_add_yblock_sse2_end_16\
 684              "add $"PTR_SIZE"*1, %1          \n\t"\
 685              snow_inner_add_yblock_sse2_end_common1\
 686              "dec %2                         \n\t"\
 687              snow_inner_add_yblock_sse2_end_common2
 688
 689 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,
 690                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 691 snow_inner_add_yblock_sse2_header
 692 snow_inner_add_yblock_sse2_start_8("xmm1", "xmm5", "3", "0")
 693 snow_inner_add_yblock_sse2_accum_8("2", "8")
 694 snow_inner_add_yblock_sse2_accum_8("1", "128")
 695 snow_inner_add_yblock_sse2_accum_8("0", "136")
 696
 697              "mov %0, %%"REG_d"              \n\t"
 698              "movdqa (%%"REG_D"), %%xmm0     \n\t"
 699              "movdqa %%xmm1, %%xmm2          \n\t"
 700
 701              "punpckhwd %%xmm7, %%xmm1       \n\t"
 702              "punpcklwd %%xmm7, %%xmm2       \n\t"
 703              "paddd %%xmm2, %%xmm0           \n\t"
 704              "movdqa 16(%%"REG_D"), %%xmm2   \n\t"
 705              "paddd %%xmm1, %%xmm2           \n\t"
 706              "paddd %%xmm3, %%xmm0           \n\t"
 707              "paddd %%xmm3, %%xmm2           \n\t"
 708
 709              "mov %1, %%"REG_D"              \n\t"
 710              "mov "PTR_SIZE"(%%"REG_D"), %%"REG_D";\n\t"
 711              "add %3, %%"REG_D"              \n\t"
 712
 713              "movdqa (%%"REG_D"), %%xmm4     \n\t"
 714              "movdqa %%xmm5, %%xmm6          \n\t"
 715              "punpckhwd %%xmm7, %%xmm5       \n\t"
 716              "punpcklwd %%xmm7, %%xmm6       \n\t"
 717              "paddd %%xmm6, %%xmm4           \n\t"
 718              "movdqa 16(%%"REG_D"), %%xmm6   \n\t"
 719              "paddd %%xmm5, %%xmm6           \n\t"
 720              "paddd %%xmm3, %%xmm4           \n\t"
 721              "paddd %%xmm3, %%xmm6           \n\t"
 722
 723              "psrad $8, %%xmm0               \n\t" /* FRAC_BITS. */
 724              "psrad $8, %%xmm2               \n\t" /* FRAC_BITS. */
 725              "packssdw %%xmm2, %%xmm0        \n\t"
 726              "packuswb %%xmm7, %%xmm0        \n\t"
 727              "movq %%xmm0, (%%"REG_d")       \n\t"
 728
 729              "psrad $8, %%xmm4               \n\t" /* FRAC_BITS. */
 730              "psrad $8, %%xmm6               \n\t" /* FRAC_BITS. */
 731              "packssdw %%xmm6, %%xmm4        \n\t"
 732              "packuswb %%xmm7, %%xmm4        \n\t"
 733              "movq %%xmm4, (%%"REG_d",%%"REG_c");\n\t"
 734 snow_inner_add_yblock_sse2_end_8
 735 }
 736
 737 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,
 738                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 739 snow_inner_add_yblock_sse2_header
 740 snow_inner_add_yblock_sse2_start_16("xmm1", "xmm5", "3", "0")
 741 snow_inner_add_yblock_sse2_accum_16("2", "16")
 742 snow_inner_add_yblock_sse2_accum_16("1", "512")
 743 snow_inner_add_yblock_sse2_accum_16("0", "528")
 744
 745              "mov %0, %%"REG_d"              \n\t"
 746              "psrlw $4, %%xmm1               \n\t"
 747              "psrlw $4, %%xmm5               \n\t"
 748              "paddw   (%%"REG_D"), %%xmm1    \n\t"
 749              "paddw 16(%%"REG_D"), %%xmm5    \n\t"
 750              "paddw %%xmm3, %%xmm1           \n\t"
 751              "paddw %%xmm3, %%xmm5           \n\t"
 752              "psraw $4, %%xmm1               \n\t" /* FRAC_BITS. */
 753              "psraw $4, %%xmm5               \n\t" /* FRAC_BITS. */
 754              "packuswb %%xmm5, %%xmm1        \n\t"
 755
 756              "movdqu %%xmm1, (%%"REG_d")       \n\t"
 757
 758 snow_inner_add_yblock_sse2_end_16
 759 }
 760
 761 #define snow_inner_add_yblock_mmx_header \
 762     IDWTELEM * * dst_array = sb->line + src_y;\
 763     long tmp;\
 764     asm volatile(\
 765              "mov  %7, %%"REG_c"             \n\t"\
 766              "mov  %6, %2                    \n\t"\
 767              "mov  %4, %%"REG_S"             \n\t"\
 768              "pxor %%mm7, %%mm7              \n\t" /* 0 */\
 769              "pcmpeqd %%mm3, %%mm3           \n\t"\
 770              "psllw $15, %%mm3               \n\t"\
 771              "psrlw $12, %%mm3               \n\t" /* FRAC_BITS >> 1 */\
 772              "1:                             \n\t"\
 773              "mov %1, %%"REG_D"              \n\t"\
 774              "mov (%%"REG_D"), %%"REG_D"     \n\t"\
 775              "add %3, %%"REG_D"              \n\t"
 776
 777 #define snow_inner_add_yblock_mmx_start(out_reg1, out_reg2, ptr_offset, s_offset, d_offset)\
 778              "mov "PTR_SIZE"*"ptr_offset"(%%"REG_a"), %%"REG_d"; \n\t"\
 779              "movd "d_offset"(%%"REG_d"), %%"out_reg1" \n\t"\
 780              "movd "d_offset"+4(%%"REG_d"), %%"out_reg2" \n\t"\
 781              "punpcklbw %%mm7, %%"out_reg1" \n\t"\
 782              "punpcklbw %%mm7, %%"out_reg2" \n\t"\
 783              "movd "s_offset"(%%"REG_S"), %%mm0 \n\t"\
 784              "movd "s_offset"+4(%%"REG_S"), %%mm4 \n\t"\
 785              "punpcklbw %%mm7, %%mm0       \n\t"\
 786              "punpcklbw %%mm7, %%mm4       \n\t"\
 787              "pmullw %%mm0, %%"out_reg1"    \n\t"\
 788              "pmullw %%mm4, %%"out_reg2"    \n\t"
 789
 790 #define snow_inner_add_yblock_mmx_accum(ptr_offset, s_offset, d_offset) \
 791              snow_inner_add_yblock_mmx_start("mm2", "mm6", ptr_offset, s_offset, d_offset)\
 792              "paddusw %%mm2, %%mm1         \n\t"\
 793              "paddusw %%mm6, %%mm5         \n\t"
 794
 795 #define snow_inner_add_yblock_mmx_mix(read_offset, write_offset)\
 796              "mov %0, %%"REG_d"              \n\t"\
 797              "psrlw $4, %%mm1                \n\t"\
 798              "psrlw $4, %%mm5                \n\t"\
 799              "paddw "read_offset"(%%"REG_D"), %%mm1 \n\t"\
 800              "paddw "read_offset"+8(%%"REG_D"), %%mm5 \n\t"\
 801              "paddw %%mm3, %%mm1             \n\t"\
 802              "paddw %%mm3, %%mm5             \n\t"\
 803              "psraw $4, %%mm1                \n\t"\
 804              "psraw $4, %%mm5                \n\t"\
 805              "packuswb %%mm5, %%mm1          \n\t"\
 806              "movq %%mm1, "write_offset"(%%"REG_d") \n\t"
 807
 808 #define snow_inner_add_yblock_mmx_end(s_step)\
 809              "add $"s_step", %%"REG_S"             \n\t"\
 810              "add %%"REG_c", "PTR_SIZE"*3(%%"REG_a");\n\t"\
 811              "add %%"REG_c", "PTR_SIZE"*2(%%"REG_a");\n\t"\
 812              "add %%"REG_c", "PTR_SIZE"*1(%%"REG_a");\n\t"\
 813              "add %%"REG_c", (%%"REG_a")     \n\t"\
 814              "add $"PTR_SIZE"*1, %1          \n\t"\
 815              "add %%"REG_c", %0              \n\t"\
 816              "dec %2                         \n\t"\
 817              "jnz 1b                         \n\t"\
 818              :"+m"(dst8),"+m"(dst_array),"=&r"(tmp)\
 819              :\
 820              "rm"((long)(src_x<<1)),"m"(obmc),"a"(block),"m"((long)b_h),"m"((long)src_stride):\
 821              "%"REG_c"","%"REG_S"","%"REG_D"","%"REG_d"");
 822
 823 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,
 824                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 825 snow_inner_add_yblock_mmx_header
 826 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "0", "0")
 827 snow_inner_add_yblock_mmx_accum("2", "8", "0")
 828 snow_inner_add_yblock_mmx_accum("1", "128", "0")
 829 snow_inner_add_yblock_mmx_accum("0", "136", "0")
 830 snow_inner_add_yblock_mmx_mix("0", "0")
 831 snow_inner_add_yblock_mmx_end("16")
 832 }
 833
 834 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,
 835                       int src_x, int src_y, long src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 836 snow_inner_add_yblock_mmx_header
 837 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "0", "0")
 838 snow_inner_add_yblock_mmx_accum("2", "16", "0")
 839 snow_inner_add_yblock_mmx_accum("1", "512", "0")
 840 snow_inner_add_yblock_mmx_accum("0", "528", "0")
 841 snow_inner_add_yblock_mmx_mix("0", "0")
 842
 843 snow_inner_add_yblock_mmx_start("mm1", "mm5", "3", "8", "8")
 844 snow_inner_add_yblock_mmx_accum("2", "24", "8")
 845 snow_inner_add_yblock_mmx_accum("1", "520", "8")
 846 snow_inner_add_yblock_mmx_accum("0", "536", "8")
 847 snow_inner_add_yblock_mmx_mix("16", "8")
 848 snow_inner_add_yblock_mmx_end("32")
 849 }
 850
 851 void ff_snow_inner_add_yblock_sse2(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
 852                            int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 853
 854     if (b_w == 16)
 855         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);
 856     else if (b_w == 8 && obmc_stride == 16) {
 857         if (!(b_h & 1))
 858             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);
 859         else
 860             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);
 861     } else
 862          ff_snow_inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
 863 }
 864
 865 void ff_snow_inner_add_yblock_mmx(const uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h,
 866                           int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8){
 867     if (b_w == 16)
 868         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);
 869     else if (b_w == 8 && obmc_stride == 16)
 870         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);
 871     else
 872         ff_snow_inner_add_yblock(obmc, obmc_stride, block, b_w, b_h, src_x,src_y, src_stride, sb, add, dst8);
 873 }