synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/i386/mpegvideo_mmx_template.c

   1 /*
   2  * MPEG video MMX templates
   3  *
   4  * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #undef SPREADW
  21 #undef PMAXW
  22 #ifdef HAVE_MMX2
  23 #define SPREADW(a) "pshufw $0, " #a ", " #a " \n\t"
  24 #define PMAXW(a,b) "pmaxsw " #a ", " #b " \n\t"
  25
  26 #else
  27 #define SPREADW(a) \
  28         "punpcklwd " #a ", " #a " \n\t"\
  29         "punpcklwd " #a ", " #a " \n\t"
  30 #define PMAXW(a,b) \
  31         "psubusw " #a ", " #b " \n\t"\
  32         "paddw " #a ", " #b " \n\t"
  33 #endif
  34
  35 static int RENAME(dct_quantize)(MpegEncContext *s,
  36                             DCTELEM *block, int n,
  37                             int qscale, int *overflow)
  38 {
  39     int level=0, last_non_zero_p1, q; //=0 is cuz gcc says uninitalized ...
  40     const uint16_t *qmat, *bias;
  41     __align8 int16_t temp_block[64];
  42
  43     assert((7&(int)(&temp_block[0])) == 0); //did gcc align it correctly?
  44
  45     //s->fdct (block);
  46     ff_fdct_mmx (block); //cant be anything else ...
  47
  48     if (s->mb_intra) {
  49         int dummy;
  50         if (n < 4)
  51             q = s->y_dc_scale;
  52         else
  53             q = s->c_dc_scale;
  54         /* note: block[0] is assumed to be positive */
  55         if (!s->h263_aic) {
  56 #if 1
  57         asm volatile (
  58                 "imul %%ecx             \n\t"
  59                 : "=d" (level), "=a"(dummy)
  60                 : "a" ((block[0]>>2) + q), "c" (inverse[q<<1])
  61         );
  62 #else
  63         asm volatile (
  64                 "xorl %%edx, %%edx      \n\t"
  65                 "divw %%cx              \n\t"
  66                 "movzwl %%ax, %%eax     \n\t"
  67                 : "=a" (level)
  68                 : "a" ((block[0]>>2) + q), "c" (q<<1)
  69                 : "%edx"
  70         );
  71 #endif
  72         } else
  73             /* For AIC we skip quant/dequant of INTRADC */
  74             level = (block[0] + 4)>>3;
  75
  76         block[0]=0; //avoid fake overflow
  77 //        temp_block[0] = (block[0] + (q >> 1)) / q;
  78         last_non_zero_p1 = 1;
  79         bias = s->q_intra_matrix16_bias[qscale];
  80         qmat = s->q_intra_matrix16[qscale];
  81     } else {
  82         last_non_zero_p1 = 0;
  83         bias = s->q_inter_matrix16_bias[qscale];
  84         qmat = s->q_inter_matrix16[qscale];
  85     }
  86
  87     if(s->out_format == FMT_H263 && s->mpeg_quant==0){
  88
  89         asm volatile(
  90             "movd %%eax, %%mm3                  \n\t" // last_non_zero_p1
  91             SPREADW(%%mm3)
  92             "pxor %%mm7, %%mm7                  \n\t" // 0
  93             "pxor %%mm4, %%mm4                  \n\t" // 0
  94             "movq (%2), %%mm5                   \n\t" // qmat[0]
  95             "pxor %%mm6, %%mm6                  \n\t"
  96             "psubw (%3), %%mm6                  \n\t" // -bias[0]
  97             "movl $-128, %%eax                  \n\t"
  98             ".balign 16                         \n\t"
  99             "1:                                 \n\t"
 100             "pxor %%mm1, %%mm1                  \n\t" // 0
 101             "movq (%1, %%eax), %%mm0            \n\t" // block[i]
 102             "pcmpgtw %%mm0, %%mm1               \n\t" // block[i] <= 0 ? 0xFF : 0x00
 103             "pxor %%mm1, %%mm0                  \n\t"
 104             "psubw %%mm1, %%mm0                 \n\t" // ABS(block[i])
 105             "psubusw %%mm6, %%mm0               \n\t" // ABS(block[i]) + bias[0]
 106             "pmulhw %%mm5, %%mm0                \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16
 107             "por %%mm0, %%mm4                   \n\t"
 108             "pxor %%mm1, %%mm0                  \n\t"
 109             "psubw %%mm1, %%mm0                 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
 110             "movq %%mm0, (%5, %%eax)            \n\t"
 111             "pcmpeqw %%mm7, %%mm0               \n\t" // out==0 ? 0xFF : 0x00
 112             "movq (%4, %%eax), %%mm1            \n\t"
 113             "movq %%mm7, (%1, %%eax)            \n\t" // 0
 114             "pandn %%mm1, %%mm0                 \n\t"
 115             PMAXW(%%mm0, %%mm3)
 116             "addl $8, %%eax                     \n\t"
 117             " js 1b                             \n\t"
 118             "movq %%mm3, %%mm0                  \n\t"
 119             "psrlq $32, %%mm3                   \n\t"
 120             PMAXW(%%mm0, %%mm3)
 121             "movq %%mm3, %%mm0                  \n\t"
 122             "psrlq $16, %%mm3                   \n\t"
 123             PMAXW(%%mm0, %%mm3)
 124             "movd %%mm3, %%eax                  \n\t"
 125             "movzbl %%al, %%eax                 \n\t" // last_non_zero_p1
 126             : "+a" (last_non_zero_p1)
 127             : "r" (block+64), "r" (qmat), "r" (bias),
 128               "r" (inv_zigzag_direct16+64), "r" (temp_block+64)
 129         );
 130         // note the asm is split cuz gcc doesnt like that many operands ...
 131         asm volatile(
 132             "movd %1, %%mm1                     \n\t" // max_qcoeff
 133             SPREADW(%%mm1)
 134             "psubusw %%mm1, %%mm4               \n\t"
 135             "packuswb %%mm4, %%mm4              \n\t"
 136             "movd %%mm4, %0                     \n\t" // *overflow
 137         : "=g" (*overflow)
 138         : "g" (s->max_qcoeff)
 139         );
 140     }else{ // FMT_H263
 141         asm volatile(
 142             "movd %%eax, %%mm3                  \n\t" // last_non_zero_p1
 143             SPREADW(%%mm3)
 144             "pxor %%mm7, %%mm7                  \n\t" // 0
 145             "pxor %%mm4, %%mm4                  \n\t" // 0
 146             "movl $-128, %%eax                  \n\t"
 147             ".balign 16                         \n\t"
 148             "1:                                 \n\t"
 149             "pxor %%mm1, %%mm1                  \n\t" // 0
 150             "movq (%1, %%eax), %%mm0            \n\t" // block[i]
 151             "pcmpgtw %%mm0, %%mm1               \n\t" // block[i] <= 0 ? 0xFF : 0x00
 152             "pxor %%mm1, %%mm0                  \n\t"
 153             "psubw %%mm1, %%mm0                 \n\t" // ABS(block[i])
 154             "movq (%3, %%eax), %%mm6            \n\t" // bias[0]
 155             "paddusw %%mm6, %%mm0               \n\t" // ABS(block[i]) + bias[0]
 156             "movq (%2, %%eax), %%mm5            \n\t" // qmat[i]
 157             "pmulhw %%mm5, %%mm0                \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16
 158             "por %%mm0, %%mm4                   \n\t"
 159             "pxor %%mm1, %%mm0                  \n\t"
 160             "psubw %%mm1, %%mm0                 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
 161             "movq %%mm0, (%5, %%eax)            \n\t"
 162             "pcmpeqw %%mm7, %%mm0               \n\t" // out==0 ? 0xFF : 0x00
 163             "movq (%4, %%eax), %%mm1            \n\t"
 164             "movq %%mm7, (%1, %%eax)            \n\t" // 0
 165             "pandn %%mm1, %%mm0                 \n\t"
 166             PMAXW(%%mm0, %%mm3)
 167             "addl $8, %%eax                     \n\t"
 168             " js 1b                             \n\t"
 169             "movq %%mm3, %%mm0                  \n\t"
 170             "psrlq $32, %%mm3                   \n\t"
 171             PMAXW(%%mm0, %%mm3)
 172             "movq %%mm3, %%mm0                  \n\t"
 173             "psrlq $16, %%mm3                   \n\t"
 174             PMAXW(%%mm0, %%mm3)
 175             "movd %%mm3, %%eax                  \n\t"
 176             "movzbl %%al, %%eax                 \n\t" // last_non_zero_p1
 177             : "+a" (last_non_zero_p1)
 178             : "r" (block+64), "r" (qmat+64), "r" (bias+64),
 179               "r" (inv_zigzag_direct16+64), "r" (temp_block+64)
 180         );
 181         // note the asm is split cuz gcc doesnt like that many operands ...
 182         asm volatile(
 183             "movd %1, %%mm1                     \n\t" // max_qcoeff
 184             SPREADW(%%mm1)
 185             "psubusw %%mm1, %%mm4               \n\t"
 186             "packuswb %%mm4, %%mm4              \n\t"
 187             "movd %%mm4, %0                     \n\t" // *overflow
 188         : "=g" (*overflow)
 189         : "g" (s->max_qcoeff)
 190         );
 191     }
 192
 193     if(s->mb_intra) block[0]= level;
 194     else            block[0]= temp_block[0];
 195
 196     if(s->dsp.idct_permutation_type == FF_SIMPLE_IDCT_PERM){
 197         if(last_non_zero_p1 <= 1) goto end;
 198         block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08];
 199         block[0x20] = temp_block[0x10];
 200         if(last_non_zero_p1 <= 4) goto end;
 201         block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02];
 202         block[0x09] = temp_block[0x03];
 203         if(last_non_zero_p1 <= 7) goto end;
 204         block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11];
 205         block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20];
 206         if(last_non_zero_p1 <= 11) goto end;
 207         block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12];
 208         block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04];
 209         block[0x0C] = temp_block[0x05];
 210         if(last_non_zero_p1 <= 16) goto end;
 211         block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13];
 212         block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21];
 213         block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30];
 214         block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22];
 215         if(last_non_zero_p1 <= 24) goto end;
 216         block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14];
 217         block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06];
 218         block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E];
 219         block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C];
 220         if(last_non_zero_p1 <= 32) goto end;
 221         block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A];
 222         block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38];
 223         block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32];
 224         block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24];
 225         if(last_non_zero_p1 <= 40) goto end;
 226         block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16];
 227         block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17];
 228         block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25];
 229         block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33];
 230         if(last_non_zero_p1 <= 48) goto end;
 231         block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
 232         block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D];
 233         block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
 234         block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E];
 235         if(last_non_zero_p1 <= 56) goto end;
 236         block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C];
 237         block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36];
 238         block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37];
 239         block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
 240     }else if(s->dsp.idct_permutation_type == FF_LIBMPEG2_IDCT_PERM){
 241         if(last_non_zero_p1 <= 1) goto end;
 242         block[0x04] = temp_block[0x01];
 243         block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
 244         if(last_non_zero_p1 <= 4) goto end;
 245         block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02];
 246         block[0x05] = temp_block[0x03];
 247         if(last_non_zero_p1 <= 7) goto end;
 248         block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11];
 249         block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
 250         if(last_non_zero_p1 <= 11) goto end;
 251         block[0x1C] = temp_block[0x19];
 252         block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B];
 253         block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05];
 254         if(last_non_zero_p1 <= 16) goto end;
 255         block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13];
 256         block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21];
 257         block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
 258         block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22];
 259         if(last_non_zero_p1 <= 24) goto end;
 260         block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14];
 261         block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06];
 262         block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E];
 263         block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C];
 264         if(last_non_zero_p1 <= 32) goto end;
 265         block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A];
 266         block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38];
 267         block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32];
 268         block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24];
 269         if(last_non_zero_p1 <= 40) goto end;
 270         block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16];
 271         block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
 272         block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25];
 273         block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33];
 274         if(last_non_zero_p1 <= 48) goto end;
 275         block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B];
 276         block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D];
 277             block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
 278         block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E];
 279         if(last_non_zero_p1 <= 56) goto end;
 280         block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C];
 281         block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36];
 282         block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
 283         block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
 284     }else{
 285         if(last_non_zero_p1 <= 1) goto end;
 286         block[0x01] = temp_block[0x01];
 287         block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
 288         if(last_non_zero_p1 <= 4) goto end;
 289         block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02];
 290         block[0x03] = temp_block[0x03];
 291         if(last_non_zero_p1 <= 7) goto end;
 292         block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11];
 293         block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
 294         if(last_non_zero_p1 <= 11) goto end;
 295         block[0x19] = temp_block[0x19];
 296         block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B];
 297         block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05];
 298         if(last_non_zero_p1 <= 16) goto end;
 299         block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13];
 300         block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21];
 301         block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
 302         block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22];
 303         if(last_non_zero_p1 <= 24) goto end;
 304         block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14];
 305         block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06];
 306         block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E];
 307         block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C];
 308         if(last_non_zero_p1 <= 32) goto end;
 309         block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A];
 310         block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38];
 311         block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32];
 312         block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24];
 313         if(last_non_zero_p1 <= 40) goto end;
 314         block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16];
 315         block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
 316         block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25];
 317         block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33];
 318         if(last_non_zero_p1 <= 48) goto end;
 319         block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
 320         block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D];
 321         block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
 322         block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E];
 323         if(last_non_zero_p1 <= 56) goto end;
 324         block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C];
 325         block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36];
 326         block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
 327         block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
 328     }
 329     end:
 330 /*
 331     for(i=0; i<last_non_zero_p1; i++)
 332     {
 333        int j= zigzag_direct_noperm[i];
 334        block[block_permute_op(j)]= temp_block[j];
 335     }
 336 */
 337
 338     return last_non_zero_p1 - 1;
 339 }