git.sesse.net Git - ffmpeg/blob - libavcodec/x86/mpegvideo.c

   1 /*
   2  * Optimized for ia32 CPUs by Nick Kurshev <nickols_k@mail.ru>
   3  * h263, mpeg1, mpeg2 dequantizer & draw_edges by Michael Niedermayer <michaelni@gmx.at>
   4  *
   5  * This file is part of Libav.
   6  *
   7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include "libavutil/attributes.h"
  23 #include "libavutil/cpu.h"
  24 #include "libavutil/x86/asm.h"
  25 #include "libavcodec/avcodec.h"
  26 #include "libavcodec/mpegvideo.h"
  27 #include "dsputil_mmx.h"
  28
  29 #if HAVE_INLINE_ASM
  30
  31 static void dct_unquantize_h263_intra_mmx(MpegEncContext *s,
  32                                   int16_t *block, int n, int qscale)
  33 {
  34     x86_reg level, qmul, qadd, nCoeffs;
  35
  36     qmul = qscale << 1;
  37
  38     assert(s->block_last_index[n]>=0 || s->h263_aic);
  39
  40     if (!s->h263_aic) {
  41         if (n < 4)
  42             level = block[0] * s->y_dc_scale;
  43         else
  44             level = block[0] * s->c_dc_scale;
  45         qadd = (qscale - 1) | 1;
  46     }else{
  47         qadd = 0;
  48         level= block[0];
  49     }
  50     if(s->ac_pred)
  51         nCoeffs=63;
  52     else
  53         nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
  54
  55 __asm__ volatile(
  56                 "movd %1, %%mm6                 \n\t" //qmul
  57                 "packssdw %%mm6, %%mm6          \n\t"
  58                 "packssdw %%mm6, %%mm6          \n\t"
  59                 "movd %2, %%mm5                 \n\t" //qadd
  60                 "pxor %%mm7, %%mm7              \n\t"
  61                 "packssdw %%mm5, %%mm5          \n\t"
  62                 "packssdw %%mm5, %%mm5          \n\t"
  63                 "psubw %%mm5, %%mm7             \n\t"
  64                 "pxor %%mm4, %%mm4              \n\t"
  65                 ".p2align 4                     \n\t"
  66                 "1:                             \n\t"
  67                 "movq (%0, %3), %%mm0           \n\t"
  68                 "movq 8(%0, %3), %%mm1          \n\t"
  69
  70                 "pmullw %%mm6, %%mm0            \n\t"
  71                 "pmullw %%mm6, %%mm1            \n\t"
  72
  73                 "movq (%0, %3), %%mm2           \n\t"
  74                 "movq 8(%0, %3), %%mm3          \n\t"
  75
  76                 "pcmpgtw %%mm4, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
  77                 "pcmpgtw %%mm4, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
  78
  79                 "pxor %%mm2, %%mm0              \n\t"
  80                 "pxor %%mm3, %%mm1              \n\t"
  81
  82                 "paddw %%mm7, %%mm0             \n\t"
  83                 "paddw %%mm7, %%mm1             \n\t"
  84
  85                 "pxor %%mm0, %%mm2              \n\t"
  86                 "pxor %%mm1, %%mm3              \n\t"
  87
  88                 "pcmpeqw %%mm7, %%mm0           \n\t" // block[i] == 0 ? -1 : 0
  89                 "pcmpeqw %%mm7, %%mm1           \n\t" // block[i] == 0 ? -1 : 0
  90
  91                 "pandn %%mm2, %%mm0             \n\t"
  92                 "pandn %%mm3, %%mm1             \n\t"
  93
  94                 "movq %%mm0, (%0, %3)           \n\t"
  95                 "movq %%mm1, 8(%0, %3)          \n\t"
  96
  97                 "add $16, %3                    \n\t"
  98                 "jng 1b                         \n\t"
  99                 ::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
 100                 : "memory"
 101         );
 102         block[0]= level;
 103 }
 104
 105
 106 static void dct_unquantize_h263_inter_mmx(MpegEncContext *s,
 107                                   int16_t *block, int n, int qscale)
 108 {
 109     x86_reg qmul, qadd, nCoeffs;
 110
 111     qmul = qscale << 1;
 112     qadd = (qscale - 1) | 1;
 113
 114     assert(s->block_last_index[n]>=0 || s->h263_aic);
 115
 116     nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
 117
 118 __asm__ volatile(
 119                 "movd %1, %%mm6                 \n\t" //qmul
 120                 "packssdw %%mm6, %%mm6          \n\t"
 121                 "packssdw %%mm6, %%mm6          \n\t"
 122                 "movd %2, %%mm5                 \n\t" //qadd
 123                 "pxor %%mm7, %%mm7              \n\t"
 124                 "packssdw %%mm5, %%mm5          \n\t"
 125                 "packssdw %%mm5, %%mm5          \n\t"
 126                 "psubw %%mm5, %%mm7             \n\t"
 127                 "pxor %%mm4, %%mm4              \n\t"
 128                 ".p2align 4                     \n\t"
 129                 "1:                             \n\t"
 130                 "movq (%0, %3), %%mm0           \n\t"
 131                 "movq 8(%0, %3), %%mm1          \n\t"
 132
 133                 "pmullw %%mm6, %%mm0            \n\t"
 134                 "pmullw %%mm6, %%mm1            \n\t"
 135
 136                 "movq (%0, %3), %%mm2           \n\t"
 137                 "movq 8(%0, %3), %%mm3          \n\t"
 138
 139                 "pcmpgtw %%mm4, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
 140                 "pcmpgtw %%mm4, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
 141
 142                 "pxor %%mm2, %%mm0              \n\t"
 143                 "pxor %%mm3, %%mm1              \n\t"
 144
 145                 "paddw %%mm7, %%mm0             \n\t"
 146                 "paddw %%mm7, %%mm1             \n\t"
 147
 148                 "pxor %%mm0, %%mm2              \n\t"
 149                 "pxor %%mm1, %%mm3              \n\t"
 150
 151                 "pcmpeqw %%mm7, %%mm0           \n\t" // block[i] == 0 ? -1 : 0
 152                 "pcmpeqw %%mm7, %%mm1           \n\t" // block[i] == 0 ? -1 : 0
 153
 154                 "pandn %%mm2, %%mm0             \n\t"
 155                 "pandn %%mm3, %%mm1             \n\t"
 156
 157                 "movq %%mm0, (%0, %3)           \n\t"
 158                 "movq %%mm1, 8(%0, %3)          \n\t"
 159
 160                 "add $16, %3                    \n\t"
 161                 "jng 1b                         \n\t"
 162                 ::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
 163                 : "memory"
 164         );
 165 }
 166
 167
 168 /*
 169   NK:
 170   Note: looking at PARANOID:
 171   "enable all paranoid tests for rounding, overflows, etc..."
 172
 173 #ifdef PARANOID
 174                 if (level < -2048 || level > 2047)
 175                     fprintf(stderr, "unquant error %d %d\n", i, level);
 176 #endif
 177   We can suppose that result of two multiplications can't be greater than 0xFFFF
 178   i.e. is 16-bit, so we use here only PMULLW instruction and can avoid
 179   a complex multiplication.
 180 =====================================================
 181  Full formula for multiplication of 2 integer numbers
 182  which are represent as high:low words:
 183  input: value1 = high1:low1
 184         value2 = high2:low2
 185  output: value3 = value1*value2
 186  value3=high3:low3 (on overflow: modulus 2^32 wrap-around)
 187  this mean that for 0x123456 * 0x123456 correct result is 0x766cb0ce4
 188  but this algorithm will compute only 0x66cb0ce4
 189  this limited by 16-bit size of operands
 190  ---------------------------------
 191  tlow1 = high1*low2
 192  tlow2 = high2*low1
 193  tlow1 = tlow1 + tlow2
 194  high3:low3 = low1*low2
 195  high3 += tlow1
 196 */
 197 static void dct_unquantize_mpeg1_intra_mmx(MpegEncContext *s,
 198                                      int16_t *block, int n, int qscale)
 199 {
 200     x86_reg nCoeffs;
 201     const uint16_t *quant_matrix;
 202     int block0;
 203
 204     assert(s->block_last_index[n]>=0);
 205
 206     nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
 207
 208     if (n < 4)
 209         block0 = block[0] * s->y_dc_scale;
 210     else
 211         block0 = block[0] * s->c_dc_scale;
 212     /* XXX: only mpeg1 */
 213     quant_matrix = s->intra_matrix;
 214 __asm__ volatile(
 215                 "pcmpeqw %%mm7, %%mm7           \n\t"
 216                 "psrlw $15, %%mm7               \n\t"
 217                 "movd %2, %%mm6                 \n\t"
 218                 "packssdw %%mm6, %%mm6          \n\t"
 219                 "packssdw %%mm6, %%mm6          \n\t"
 220                 "mov %3, %%"REG_a"              \n\t"
 221                 ".p2align 4                     \n\t"
 222                 "1:                             \n\t"
 223                 "movq (%0, %%"REG_a"), %%mm0    \n\t"
 224                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"
 225                 "movq (%1, %%"REG_a"), %%mm4    \n\t"
 226                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"
 227                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
 228                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
 229                 "pxor %%mm2, %%mm2              \n\t"
 230                 "pxor %%mm3, %%mm3              \n\t"
 231                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
 232                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
 233                 "pxor %%mm2, %%mm0              \n\t"
 234                 "pxor %%mm3, %%mm1              \n\t"
 235                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
 236                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
 237                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*q
 238                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*q
 239                 "pxor %%mm4, %%mm4              \n\t"
 240                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
 241                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
 242                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
 243                 "psraw $3, %%mm0                \n\t"
 244                 "psraw $3, %%mm1                \n\t"
 245                 "psubw %%mm7, %%mm0             \n\t"
 246                 "psubw %%mm7, %%mm1             \n\t"
 247                 "por %%mm7, %%mm0               \n\t"
 248                 "por %%mm7, %%mm1               \n\t"
 249                 "pxor %%mm2, %%mm0              \n\t"
 250                 "pxor %%mm3, %%mm1              \n\t"
 251                 "psubw %%mm2, %%mm0             \n\t"
 252                 "psubw %%mm3, %%mm1             \n\t"
 253                 "pandn %%mm0, %%mm4             \n\t"
 254                 "pandn %%mm1, %%mm5             \n\t"
 255                 "movq %%mm4, (%0, %%"REG_a")    \n\t"
 256                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"
 257
 258                 "add $16, %%"REG_a"             \n\t"
 259                 "js 1b                          \n\t"
 260                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
 261                 : "%"REG_a, "memory"
 262         );
 263     block[0]= block0;
 264 }
 265
 266 static void dct_unquantize_mpeg1_inter_mmx(MpegEncContext *s,
 267                                      int16_t *block, int n, int qscale)
 268 {
 269     x86_reg nCoeffs;
 270     const uint16_t *quant_matrix;
 271
 272     assert(s->block_last_index[n]>=0);
 273
 274     nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
 275
 276         quant_matrix = s->inter_matrix;
 277 __asm__ volatile(
 278                 "pcmpeqw %%mm7, %%mm7           \n\t"
 279                 "psrlw $15, %%mm7               \n\t"
 280                 "movd %2, %%mm6                 \n\t"
 281                 "packssdw %%mm6, %%mm6          \n\t"
 282                 "packssdw %%mm6, %%mm6          \n\t"
 283                 "mov %3, %%"REG_a"              \n\t"
 284                 ".p2align 4                     \n\t"
 285                 "1:                             \n\t"
 286                 "movq (%0, %%"REG_a"), %%mm0    \n\t"
 287                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"
 288                 "movq (%1, %%"REG_a"), %%mm4    \n\t"
 289                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"
 290                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
 291                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
 292                 "pxor %%mm2, %%mm2              \n\t"
 293                 "pxor %%mm3, %%mm3              \n\t"
 294                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
 295                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
 296                 "pxor %%mm2, %%mm0              \n\t"
 297                 "pxor %%mm3, %%mm1              \n\t"
 298                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
 299                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
 300                 "paddw %%mm0, %%mm0             \n\t" // abs(block[i])*2
 301                 "paddw %%mm1, %%mm1             \n\t" // abs(block[i])*2
 302                 "paddw %%mm7, %%mm0             \n\t" // abs(block[i])*2 + 1
 303                 "paddw %%mm7, %%mm1             \n\t" // abs(block[i])*2 + 1
 304                 "pmullw %%mm4, %%mm0            \n\t" // (abs(block[i])*2 + 1)*q
 305                 "pmullw %%mm5, %%mm1            \n\t" // (abs(block[i])*2 + 1)*q
 306                 "pxor %%mm4, %%mm4              \n\t"
 307                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
 308                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
 309                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
 310                 "psraw $4, %%mm0                \n\t"
 311                 "psraw $4, %%mm1                \n\t"
 312                 "psubw %%mm7, %%mm0             \n\t"
 313                 "psubw %%mm7, %%mm1             \n\t"
 314                 "por %%mm7, %%mm0               \n\t"
 315                 "por %%mm7, %%mm1               \n\t"
 316                 "pxor %%mm2, %%mm0              \n\t"
 317                 "pxor %%mm3, %%mm1              \n\t"
 318                 "psubw %%mm2, %%mm0             \n\t"
 319                 "psubw %%mm3, %%mm1             \n\t"
 320                 "pandn %%mm0, %%mm4             \n\t"
 321                 "pandn %%mm1, %%mm5             \n\t"
 322                 "movq %%mm4, (%0, %%"REG_a")    \n\t"
 323                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"
 324
 325                 "add $16, %%"REG_a"             \n\t"
 326                 "js 1b                          \n\t"
 327                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
 328                 : "%"REG_a, "memory"
 329         );
 330 }
 331
 332 static void dct_unquantize_mpeg2_intra_mmx(MpegEncContext *s,
 333                                      int16_t *block, int n, int qscale)
 334 {
 335     x86_reg nCoeffs;
 336     const uint16_t *quant_matrix;
 337     int block0;
 338
 339     assert(s->block_last_index[n]>=0);
 340
 341     if(s->alternate_scan) nCoeffs= 63; //FIXME
 342     else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
 343
 344     if (n < 4)
 345         block0 = block[0] * s->y_dc_scale;
 346     else
 347         block0 = block[0] * s->c_dc_scale;
 348     quant_matrix = s->intra_matrix;
 349 __asm__ volatile(
 350                 "pcmpeqw %%mm7, %%mm7           \n\t"
 351                 "psrlw $15, %%mm7               \n\t"
 352                 "movd %2, %%mm6                 \n\t"
 353                 "packssdw %%mm6, %%mm6          \n\t"
 354                 "packssdw %%mm6, %%mm6          \n\t"
 355                 "mov %3, %%"REG_a"              \n\t"
 356                 ".p2align 4                     \n\t"
 357                 "1:                             \n\t"
 358                 "movq (%0, %%"REG_a"), %%mm0    \n\t"
 359                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"
 360                 "movq (%1, %%"REG_a"), %%mm4    \n\t"
 361                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"
 362                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
 363                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
 364                 "pxor %%mm2, %%mm2              \n\t"
 365                 "pxor %%mm3, %%mm3              \n\t"
 366                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
 367                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
 368                 "pxor %%mm2, %%mm0              \n\t"
 369                 "pxor %%mm3, %%mm1              \n\t"
 370                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
 371                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
 372                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*q
 373                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*q
 374                 "pxor %%mm4, %%mm4              \n\t"
 375                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
 376                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
 377                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
 378                 "psraw $3, %%mm0                \n\t"
 379                 "psraw $3, %%mm1                \n\t"
 380                 "pxor %%mm2, %%mm0              \n\t"
 381                 "pxor %%mm3, %%mm1              \n\t"
 382                 "psubw %%mm2, %%mm0             \n\t"
 383                 "psubw %%mm3, %%mm1             \n\t"
 384                 "pandn %%mm0, %%mm4             \n\t"
 385                 "pandn %%mm1, %%mm5             \n\t"
 386                 "movq %%mm4, (%0, %%"REG_a")    \n\t"
 387                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"
 388
 389                 "add $16, %%"REG_a"             \n\t"
 390                 "jng 1b                         \n\t"
 391                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
 392                 : "%"REG_a, "memory"
 393         );
 394     block[0]= block0;
 395         //Note, we do not do mismatch control for intra as errors cannot accumulate
 396 }
 397
 398 static void dct_unquantize_mpeg2_inter_mmx(MpegEncContext *s,
 399                                      int16_t *block, int n, int qscale)
 400 {
 401     x86_reg nCoeffs;
 402     const uint16_t *quant_matrix;
 403
 404     assert(s->block_last_index[n]>=0);
 405
 406     if(s->alternate_scan) nCoeffs= 63; //FIXME
 407     else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
 408
 409         quant_matrix = s->inter_matrix;
 410 __asm__ volatile(
 411                 "pcmpeqw %%mm7, %%mm7           \n\t"
 412                 "psrlq $48, %%mm7               \n\t"
 413                 "movd %2, %%mm6                 \n\t"
 414                 "packssdw %%mm6, %%mm6          \n\t"
 415                 "packssdw %%mm6, %%mm6          \n\t"
 416                 "mov %3, %%"REG_a"              \n\t"
 417                 ".p2align 4                     \n\t"
 418                 "1:                             \n\t"
 419                 "movq (%0, %%"REG_a"), %%mm0    \n\t"
 420                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"
 421                 "movq (%1, %%"REG_a"), %%mm4    \n\t"
 422                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"
 423                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
 424                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
 425                 "pxor %%mm2, %%mm2              \n\t"
 426                 "pxor %%mm3, %%mm3              \n\t"
 427                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
 428                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
 429                 "pxor %%mm2, %%mm0              \n\t"
 430                 "pxor %%mm3, %%mm1              \n\t"
 431                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
 432                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
 433                 "paddw %%mm0, %%mm0             \n\t" // abs(block[i])*2
 434                 "paddw %%mm1, %%mm1             \n\t" // abs(block[i])*2
 435                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*2*q
 436                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*2*q
 437                 "paddw %%mm4, %%mm0             \n\t" // (abs(block[i])*2 + 1)*q
 438                 "paddw %%mm5, %%mm1             \n\t" // (abs(block[i])*2 + 1)*q
 439                 "pxor %%mm4, %%mm4              \n\t"
 440                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
 441                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
 442                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
 443                 "psrlw $4, %%mm0                \n\t"
 444                 "psrlw $4, %%mm1                \n\t"
 445                 "pxor %%mm2, %%mm0              \n\t"
 446                 "pxor %%mm3, %%mm1              \n\t"
 447                 "psubw %%mm2, %%mm0             \n\t"
 448                 "psubw %%mm3, %%mm1             \n\t"
 449                 "pandn %%mm0, %%mm4             \n\t"
 450                 "pandn %%mm1, %%mm5             \n\t"
 451                 "pxor %%mm4, %%mm7              \n\t"
 452                 "pxor %%mm5, %%mm7              \n\t"
 453                 "movq %%mm4, (%0, %%"REG_a")    \n\t"
 454                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"
 455
 456                 "add $16, %%"REG_a"             \n\t"
 457                 "jng 1b                         \n\t"
 458                 "movd 124(%0, %3), %%mm0        \n\t"
 459                 "movq %%mm7, %%mm6              \n\t"
 460                 "psrlq $32, %%mm7               \n\t"
 461                 "pxor %%mm6, %%mm7              \n\t"
 462                 "movq %%mm7, %%mm6              \n\t"
 463                 "psrlq $16, %%mm7               \n\t"
 464                 "pxor %%mm6, %%mm7              \n\t"
 465                 "pslld $31, %%mm7               \n\t"
 466                 "psrlq $15, %%mm7               \n\t"
 467                 "pxor %%mm7, %%mm0              \n\t"
 468                 "movd %%mm0, 124(%0, %3)        \n\t"
 469
 470                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "r" (-2*nCoeffs)
 471                 : "%"REG_a, "memory"
 472         );
 473 }
 474
 475 static void  denoise_dct_mmx(MpegEncContext *s, int16_t *block){
 476     const int intra= s->mb_intra;
 477     int *sum= s->dct_error_sum[intra];
 478     uint16_t *offset= s->dct_offset[intra];
 479
 480     s->dct_count[intra]++;
 481
 482     __asm__ volatile(
 483         "pxor %%mm7, %%mm7                      \n\t"
 484         "1:                                     \n\t"
 485         "pxor %%mm0, %%mm0                      \n\t"
 486         "pxor %%mm1, %%mm1                      \n\t"
 487         "movq (%0), %%mm2                       \n\t"
 488         "movq 8(%0), %%mm3                      \n\t"
 489         "pcmpgtw %%mm2, %%mm0                   \n\t"
 490         "pcmpgtw %%mm3, %%mm1                   \n\t"
 491         "pxor %%mm0, %%mm2                      \n\t"
 492         "pxor %%mm1, %%mm3                      \n\t"
 493         "psubw %%mm0, %%mm2                     \n\t"
 494         "psubw %%mm1, %%mm3                     \n\t"
 495         "movq %%mm2, %%mm4                      \n\t"
 496         "movq %%mm3, %%mm5                      \n\t"
 497         "psubusw (%2), %%mm2                    \n\t"
 498         "psubusw 8(%2), %%mm3                   \n\t"
 499         "pxor %%mm0, %%mm2                      \n\t"
 500         "pxor %%mm1, %%mm3                      \n\t"
 501         "psubw %%mm0, %%mm2                     \n\t"
 502         "psubw %%mm1, %%mm3                     \n\t"
 503         "movq %%mm2, (%0)                       \n\t"
 504         "movq %%mm3, 8(%0)                      \n\t"
 505         "movq %%mm4, %%mm2                      \n\t"
 506         "movq %%mm5, %%mm3                      \n\t"
 507         "punpcklwd %%mm7, %%mm4                 \n\t"
 508         "punpckhwd %%mm7, %%mm2                 \n\t"
 509         "punpcklwd %%mm7, %%mm5                 \n\t"
 510         "punpckhwd %%mm7, %%mm3                 \n\t"
 511         "paddd (%1), %%mm4                      \n\t"
 512         "paddd 8(%1), %%mm2                     \n\t"
 513         "paddd 16(%1), %%mm5                    \n\t"
 514         "paddd 24(%1), %%mm3                    \n\t"
 515         "movq %%mm4, (%1)                       \n\t"
 516         "movq %%mm2, 8(%1)                      \n\t"
 517         "movq %%mm5, 16(%1)                     \n\t"
 518         "movq %%mm3, 24(%1)                     \n\t"
 519         "add $16, %0                            \n\t"
 520         "add $32, %1                            \n\t"
 521         "add $16, %2                            \n\t"
 522         "cmp %3, %0                             \n\t"
 523             " jb 1b                             \n\t"
 524         : "+r" (block), "+r" (sum), "+r" (offset)
 525         : "r"(block+64)
 526     );
 527 }
 528
 529 static void  denoise_dct_sse2(MpegEncContext *s, int16_t *block){
 530     const int intra= s->mb_intra;
 531     int *sum= s->dct_error_sum[intra];
 532     uint16_t *offset= s->dct_offset[intra];
 533
 534     s->dct_count[intra]++;
 535
 536     __asm__ volatile(
 537         "pxor %%xmm7, %%xmm7                    \n\t"
 538         "1:                                     \n\t"
 539         "pxor %%xmm0, %%xmm0                    \n\t"
 540         "pxor %%xmm1, %%xmm1                    \n\t"
 541         "movdqa (%0), %%xmm2                    \n\t"
 542         "movdqa 16(%0), %%xmm3                  \n\t"
 543         "pcmpgtw %%xmm2, %%xmm0                 \n\t"
 544         "pcmpgtw %%xmm3, %%xmm1                 \n\t"
 545         "pxor %%xmm0, %%xmm2                    \n\t"
 546         "pxor %%xmm1, %%xmm3                    \n\t"
 547         "psubw %%xmm0, %%xmm2                   \n\t"
 548         "psubw %%xmm1, %%xmm3                   \n\t"
 549         "movdqa %%xmm2, %%xmm4                  \n\t"
 550         "movdqa %%xmm3, %%xmm5                  \n\t"
 551         "psubusw (%2), %%xmm2                   \n\t"
 552         "psubusw 16(%2), %%xmm3                 \n\t"
 553         "pxor %%xmm0, %%xmm2                    \n\t"
 554         "pxor %%xmm1, %%xmm3                    \n\t"
 555         "psubw %%xmm0, %%xmm2                   \n\t"
 556         "psubw %%xmm1, %%xmm3                   \n\t"
 557         "movdqa %%xmm2, (%0)                    \n\t"
 558         "movdqa %%xmm3, 16(%0)                  \n\t"
 559         "movdqa %%xmm4, %%xmm6                  \n\t"
 560         "movdqa %%xmm5, %%xmm0                  \n\t"
 561         "punpcklwd %%xmm7, %%xmm4               \n\t"
 562         "punpckhwd %%xmm7, %%xmm6               \n\t"
 563         "punpcklwd %%xmm7, %%xmm5               \n\t"
 564         "punpckhwd %%xmm7, %%xmm0               \n\t"
 565         "paddd (%1), %%xmm4                     \n\t"
 566         "paddd 16(%1), %%xmm6                   \n\t"
 567         "paddd 32(%1), %%xmm5                   \n\t"
 568         "paddd 48(%1), %%xmm0                   \n\t"
 569         "movdqa %%xmm4, (%1)                    \n\t"
 570         "movdqa %%xmm6, 16(%1)                  \n\t"
 571         "movdqa %%xmm5, 32(%1)                  \n\t"
 572         "movdqa %%xmm0, 48(%1)                  \n\t"
 573         "add $32, %0                            \n\t"
 574         "add $64, %1                            \n\t"
 575         "add $32, %2                            \n\t"
 576         "cmp %3, %0                             \n\t"
 577             " jb 1b                             \n\t"
 578         : "+r" (block), "+r" (sum), "+r" (offset)
 579         : "r"(block+64)
 580           XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
 581                             "%xmm4", "%xmm5", "%xmm6", "%xmm7")
 582     );
 583 }
 584
 585 #endif /* HAVE_INLINE_ASM */
 586
 587 av_cold void ff_MPV_common_init_x86(MpegEncContext *s)
 588 {
 589 #if HAVE_INLINE_ASM
 590     int mm_flags = av_get_cpu_flags();
 591
 592     if (mm_flags & AV_CPU_FLAG_MMX) {
 593         s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_mmx;
 594         s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_mmx;
 595         s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_mmx;
 596         s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_mmx;
 597         if(!(s->flags & CODEC_FLAG_BITEXACT))
 598             s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_mmx;
 599         s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_mmx;
 600
 601         if (mm_flags & AV_CPU_FLAG_SSE2) {
 602             s->denoise_dct= denoise_dct_sse2;
 603         } else {
 604                 s->denoise_dct= denoise_dct_mmx;
 605         }
 606     }
 607 #endif /* HAVE_INLINE_ASM */
 608 }