mpegvideo: Move OutFormat enum to mpegutils.h
[ffmpeg.git] / 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 "libavutil/x86/cpu.h"
26 #include "libavcodec/avcodec.h"
27 #include "libavcodec/mpegvideo.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 static void dct_unquantize_mpeg1_intra_mmx(MpegEncContext *s,
168                                      int16_t *block, int n, int qscale)
169 {
170     x86_reg nCoeffs;
171     const uint16_t *quant_matrix;
172     int block0;
173
174     assert(s->block_last_index[n]>=0);
175
176     nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
177
178     if (n < 4)
179         block0 = block[0] * s->y_dc_scale;
180     else
181         block0 = block[0] * s->c_dc_scale;
182     /* XXX: only mpeg1 */
183     quant_matrix = s->intra_matrix;
184 __asm__ volatile(
185                 "pcmpeqw %%mm7, %%mm7           \n\t"
186                 "psrlw $15, %%mm7               \n\t"
187                 "movd %2, %%mm6                 \n\t"
188                 "packssdw %%mm6, %%mm6          \n\t"
189                 "packssdw %%mm6, %%mm6          \n\t"
190                 "mov %3, %%"REG_a"              \n\t"
191                 ".p2align 4                     \n\t"
192                 "1:                             \n\t"
193                 "movq (%0, %%"REG_a"), %%mm0    \n\t"
194                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"
195                 "movq (%1, %%"REG_a"), %%mm4    \n\t"
196                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"
197                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
198                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
199                 "pxor %%mm2, %%mm2              \n\t"
200                 "pxor %%mm3, %%mm3              \n\t"
201                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
202                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
203                 "pxor %%mm2, %%mm0              \n\t"
204                 "pxor %%mm3, %%mm1              \n\t"
205                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
206                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
207                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*q
208                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*q
209                 "pxor %%mm4, %%mm4              \n\t"
210                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
211                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
212                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
213                 "psraw $3, %%mm0                \n\t"
214                 "psraw $3, %%mm1                \n\t"
215                 "psubw %%mm7, %%mm0             \n\t"
216                 "psubw %%mm7, %%mm1             \n\t"
217                 "por %%mm7, %%mm0               \n\t"
218                 "por %%mm7, %%mm1               \n\t"
219                 "pxor %%mm2, %%mm0              \n\t"
220                 "pxor %%mm3, %%mm1              \n\t"
221                 "psubw %%mm2, %%mm0             \n\t"
222                 "psubw %%mm3, %%mm1             \n\t"
223                 "pandn %%mm0, %%mm4             \n\t"
224                 "pandn %%mm1, %%mm5             \n\t"
225                 "movq %%mm4, (%0, %%"REG_a")    \n\t"
226                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"
227
228                 "add $16, %%"REG_a"             \n\t"
229                 "js 1b                          \n\t"
230                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
231                 : "%"REG_a, "memory"
232         );
233     block[0]= block0;
234 }
235
236 static void dct_unquantize_mpeg1_inter_mmx(MpegEncContext *s,
237                                      int16_t *block, int n, int qscale)
238 {
239     x86_reg nCoeffs;
240     const uint16_t *quant_matrix;
241
242     assert(s->block_last_index[n]>=0);
243
244     nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
245
246         quant_matrix = s->inter_matrix;
247 __asm__ volatile(
248                 "pcmpeqw %%mm7, %%mm7           \n\t"
249                 "psrlw $15, %%mm7               \n\t"
250                 "movd %2, %%mm6                 \n\t"
251                 "packssdw %%mm6, %%mm6          \n\t"
252                 "packssdw %%mm6, %%mm6          \n\t"
253                 "mov %3, %%"REG_a"              \n\t"
254                 ".p2align 4                     \n\t"
255                 "1:                             \n\t"
256                 "movq (%0, %%"REG_a"), %%mm0    \n\t"
257                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"
258                 "movq (%1, %%"REG_a"), %%mm4    \n\t"
259                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"
260                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
261                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
262                 "pxor %%mm2, %%mm2              \n\t"
263                 "pxor %%mm3, %%mm3              \n\t"
264                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
265                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
266                 "pxor %%mm2, %%mm0              \n\t"
267                 "pxor %%mm3, %%mm1              \n\t"
268                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
269                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
270                 "paddw %%mm0, %%mm0             \n\t" // abs(block[i])*2
271                 "paddw %%mm1, %%mm1             \n\t" // abs(block[i])*2
272                 "paddw %%mm7, %%mm0             \n\t" // abs(block[i])*2 + 1
273                 "paddw %%mm7, %%mm1             \n\t" // abs(block[i])*2 + 1
274                 "pmullw %%mm4, %%mm0            \n\t" // (abs(block[i])*2 + 1)*q
275                 "pmullw %%mm5, %%mm1            \n\t" // (abs(block[i])*2 + 1)*q
276                 "pxor %%mm4, %%mm4              \n\t"
277                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
278                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
279                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
280                 "psraw $4, %%mm0                \n\t"
281                 "psraw $4, %%mm1                \n\t"
282                 "psubw %%mm7, %%mm0             \n\t"
283                 "psubw %%mm7, %%mm1             \n\t"
284                 "por %%mm7, %%mm0               \n\t"
285                 "por %%mm7, %%mm1               \n\t"
286                 "pxor %%mm2, %%mm0              \n\t"
287                 "pxor %%mm3, %%mm1              \n\t"
288                 "psubw %%mm2, %%mm0             \n\t"
289                 "psubw %%mm3, %%mm1             \n\t"
290                 "pandn %%mm0, %%mm4             \n\t"
291                 "pandn %%mm1, %%mm5             \n\t"
292                 "movq %%mm4, (%0, %%"REG_a")    \n\t"
293                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"
294
295                 "add $16, %%"REG_a"             \n\t"
296                 "js 1b                          \n\t"
297                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
298                 : "%"REG_a, "memory"
299         );
300 }
301
302 static void dct_unquantize_mpeg2_intra_mmx(MpegEncContext *s,
303                                      int16_t *block, int n, int qscale)
304 {
305     x86_reg nCoeffs;
306     const uint16_t *quant_matrix;
307     int block0;
308
309     assert(s->block_last_index[n]>=0);
310
311     if(s->alternate_scan) nCoeffs= 63; //FIXME
312     else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
313
314     if (n < 4)
315         block0 = block[0] * s->y_dc_scale;
316     else
317         block0 = block[0] * s->c_dc_scale;
318     quant_matrix = s->intra_matrix;
319 __asm__ volatile(
320                 "pcmpeqw %%mm7, %%mm7           \n\t"
321                 "psrlw $15, %%mm7               \n\t"
322                 "movd %2, %%mm6                 \n\t"
323                 "packssdw %%mm6, %%mm6          \n\t"
324                 "packssdw %%mm6, %%mm6          \n\t"
325                 "mov %3, %%"REG_a"              \n\t"
326                 ".p2align 4                     \n\t"
327                 "1:                             \n\t"
328                 "movq (%0, %%"REG_a"), %%mm0    \n\t"
329                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"
330                 "movq (%1, %%"REG_a"), %%mm4    \n\t"
331                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"
332                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
333                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
334                 "pxor %%mm2, %%mm2              \n\t"
335                 "pxor %%mm3, %%mm3              \n\t"
336                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
337                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
338                 "pxor %%mm2, %%mm0              \n\t"
339                 "pxor %%mm3, %%mm1              \n\t"
340                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
341                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
342                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*q
343                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*q
344                 "pxor %%mm4, %%mm4              \n\t"
345                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
346                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
347                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
348                 "psraw $3, %%mm0                \n\t"
349                 "psraw $3, %%mm1                \n\t"
350                 "pxor %%mm2, %%mm0              \n\t"
351                 "pxor %%mm3, %%mm1              \n\t"
352                 "psubw %%mm2, %%mm0             \n\t"
353                 "psubw %%mm3, %%mm1             \n\t"
354                 "pandn %%mm0, %%mm4             \n\t"
355                 "pandn %%mm1, %%mm5             \n\t"
356                 "movq %%mm4, (%0, %%"REG_a")    \n\t"
357                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"
358
359                 "add $16, %%"REG_a"             \n\t"
360                 "jng 1b                         \n\t"
361                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
362                 : "%"REG_a, "memory"
363         );
364     block[0]= block0;
365         //Note, we do not do mismatch control for intra as errors cannot accumulate
366 }
367
368 static void dct_unquantize_mpeg2_inter_mmx(MpegEncContext *s,
369                                      int16_t *block, int n, int qscale)
370 {
371     x86_reg nCoeffs;
372     const uint16_t *quant_matrix;
373
374     assert(s->block_last_index[n]>=0);
375
376     if(s->alternate_scan) nCoeffs= 63; //FIXME
377     else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
378
379         quant_matrix = s->inter_matrix;
380 __asm__ volatile(
381                 "pcmpeqw %%mm7, %%mm7           \n\t"
382                 "psrlq $48, %%mm7               \n\t"
383                 "movd %2, %%mm6                 \n\t"
384                 "packssdw %%mm6, %%mm6          \n\t"
385                 "packssdw %%mm6, %%mm6          \n\t"
386                 "mov %3, %%"REG_a"              \n\t"
387                 ".p2align 4                     \n\t"
388                 "1:                             \n\t"
389                 "movq (%0, %%"REG_a"), %%mm0    \n\t"
390                 "movq 8(%0, %%"REG_a"), %%mm1   \n\t"
391                 "movq (%1, %%"REG_a"), %%mm4    \n\t"
392                 "movq 8(%1, %%"REG_a"), %%mm5   \n\t"
393                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
394                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
395                 "pxor %%mm2, %%mm2              \n\t"
396                 "pxor %%mm3, %%mm3              \n\t"
397                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
398                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
399                 "pxor %%mm2, %%mm0              \n\t"
400                 "pxor %%mm3, %%mm1              \n\t"
401                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
402                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
403                 "paddw %%mm0, %%mm0             \n\t" // abs(block[i])*2
404                 "paddw %%mm1, %%mm1             \n\t" // abs(block[i])*2
405                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*2*q
406                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*2*q
407                 "paddw %%mm4, %%mm0             \n\t" // (abs(block[i])*2 + 1)*q
408                 "paddw %%mm5, %%mm1             \n\t" // (abs(block[i])*2 + 1)*q
409                 "pxor %%mm4, %%mm4              \n\t"
410                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
411                 "pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
412                 "pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
413                 "psrlw $4, %%mm0                \n\t"
414                 "psrlw $4, %%mm1                \n\t"
415                 "pxor %%mm2, %%mm0              \n\t"
416                 "pxor %%mm3, %%mm1              \n\t"
417                 "psubw %%mm2, %%mm0             \n\t"
418                 "psubw %%mm3, %%mm1             \n\t"
419                 "pandn %%mm0, %%mm4             \n\t"
420                 "pandn %%mm1, %%mm5             \n\t"
421                 "pxor %%mm4, %%mm7              \n\t"
422                 "pxor %%mm5, %%mm7              \n\t"
423                 "movq %%mm4, (%0, %%"REG_a")    \n\t"
424                 "movq %%mm5, 8(%0, %%"REG_a")   \n\t"
425
426                 "add $16, %%"REG_a"             \n\t"
427                 "jng 1b                         \n\t"
428                 "movd 124(%0, %3), %%mm0        \n\t"
429                 "movq %%mm7, %%mm6              \n\t"
430                 "psrlq $32, %%mm7               \n\t"
431                 "pxor %%mm6, %%mm7              \n\t"
432                 "movq %%mm7, %%mm6              \n\t"
433                 "psrlq $16, %%mm7               \n\t"
434                 "pxor %%mm6, %%mm7              \n\t"
435                 "pslld $31, %%mm7               \n\t"
436                 "psrlq $15, %%mm7               \n\t"
437                 "pxor %%mm7, %%mm0              \n\t"
438                 "movd %%mm0, 124(%0, %3)        \n\t"
439
440                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "r" (-2*nCoeffs)
441                 : "%"REG_a, "memory"
442         );
443 }
444
445 #endif /* HAVE_INLINE_ASM */
446
447 av_cold void ff_mpv_common_init_x86(MpegEncContext *s)
448 {
449 #if HAVE_INLINE_ASM
450     int cpu_flags = av_get_cpu_flags();
451
452     if (INLINE_MMX(cpu_flags)) {
453         s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_mmx;
454         s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_mmx;
455         s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_mmx;
456         s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_mmx;
457         if (!(s->avctx->flags & CODEC_FLAG_BITEXACT))
458             s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_mmx;
459         s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_mmx;
460     }
461 #endif /* HAVE_INLINE_ASM */
462 }