Merge commit 'fd9212f2edfe9b107c3c08ba2df5fd2cba5ab9e3'
[ffmpeg.git] / libavcodec / x86 / mpegvideo.c
1 /*
2  * Optimized for ia32 CPUs by Nick Kurshev <nickols_k@mail.ru>
3  * H.263, MPEG-1, MPEG-2 dequantizer & draw_edges by Michael Niedermayer <michaelni@gmx.at>
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 "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 #include "libavcodec/mpegvideodata.h"
29
30 #if HAVE_MMX_INLINE
31
32 static void dct_unquantize_h263_intra_mmx(MpegEncContext *s,
33                                   int16_t *block, int n, int qscale)
34 {
35     x86_reg level, qmul, qadd, nCoeffs;
36
37     qmul = qscale << 1;
38
39     av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
40
41     if (!s->h263_aic) {
42         if (n < 4)
43             level = block[0] * s->y_dc_scale;
44         else
45             level = block[0] * s->c_dc_scale;
46         qadd = (qscale - 1) | 1;
47     }else{
48         qadd = 0;
49         level= block[0];
50     }
51     if(s->ac_pred)
52         nCoeffs=63;
53     else
54         nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
55
56 __asm__ volatile(
57                 "movd %1, %%mm6                 \n\t" //qmul
58                 "packssdw %%mm6, %%mm6          \n\t"
59                 "packssdw %%mm6, %%mm6          \n\t"
60                 "movd %2, %%mm5                 \n\t" //qadd
61                 "pxor %%mm7, %%mm7              \n\t"
62                 "packssdw %%mm5, %%mm5          \n\t"
63                 "packssdw %%mm5, %%mm5          \n\t"
64                 "psubw %%mm5, %%mm7             \n\t"
65                 "pxor %%mm4, %%mm4              \n\t"
66                 ".p2align 4                     \n\t"
67                 "1:                             \n\t"
68                 "movq (%0, %3), %%mm0           \n\t"
69                 "movq 8(%0, %3), %%mm1          \n\t"
70
71                 "pmullw %%mm6, %%mm0            \n\t"
72                 "pmullw %%mm6, %%mm1            \n\t"
73
74                 "movq (%0, %3), %%mm2           \n\t"
75                 "movq 8(%0, %3), %%mm3          \n\t"
76
77                 "pcmpgtw %%mm4, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
78                 "pcmpgtw %%mm4, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
79
80                 "pxor %%mm2, %%mm0              \n\t"
81                 "pxor %%mm3, %%mm1              \n\t"
82
83                 "paddw %%mm7, %%mm0             \n\t"
84                 "paddw %%mm7, %%mm1             \n\t"
85
86                 "pxor %%mm0, %%mm2              \n\t"
87                 "pxor %%mm1, %%mm3              \n\t"
88
89                 "pcmpeqw %%mm7, %%mm0           \n\t" // block[i] == 0 ? -1 : 0
90                 "pcmpeqw %%mm7, %%mm1           \n\t" // block[i] == 0 ? -1 : 0
91
92                 "pandn %%mm2, %%mm0             \n\t"
93                 "pandn %%mm3, %%mm1             \n\t"
94
95                 "movq %%mm0, (%0, %3)           \n\t"
96                 "movq %%mm1, 8(%0, %3)          \n\t"
97
98                 "add $16, %3                    \n\t"
99                 "jng 1b                         \n\t"
100                 ::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
101                 : "memory"
102         );
103         block[0]= level;
104 }
105
106
107 static void dct_unquantize_h263_inter_mmx(MpegEncContext *s,
108                                   int16_t *block, int n, int qscale)
109 {
110     x86_reg qmul, qadd, nCoeffs;
111
112     qmul = qscale << 1;
113     qadd = (qscale - 1) | 1;
114
115     av_assert2(s->block_last_index[n]>=0 || s->h263_aic);
116
117     nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
118
119 __asm__ volatile(
120                 "movd %1, %%mm6                 \n\t" //qmul
121                 "packssdw %%mm6, %%mm6          \n\t"
122                 "packssdw %%mm6, %%mm6          \n\t"
123                 "movd %2, %%mm5                 \n\t" //qadd
124                 "pxor %%mm7, %%mm7              \n\t"
125                 "packssdw %%mm5, %%mm5          \n\t"
126                 "packssdw %%mm5, %%mm5          \n\t"
127                 "psubw %%mm5, %%mm7             \n\t"
128                 "pxor %%mm4, %%mm4              \n\t"
129                 ".p2align 4                     \n\t"
130                 "1:                             \n\t"
131                 "movq (%0, %3), %%mm0           \n\t"
132                 "movq 8(%0, %3), %%mm1          \n\t"
133
134                 "pmullw %%mm6, %%mm0            \n\t"
135                 "pmullw %%mm6, %%mm1            \n\t"
136
137                 "movq (%0, %3), %%mm2           \n\t"
138                 "movq 8(%0, %3), %%mm3          \n\t"
139
140                 "pcmpgtw %%mm4, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
141                 "pcmpgtw %%mm4, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
142
143                 "pxor %%mm2, %%mm0              \n\t"
144                 "pxor %%mm3, %%mm1              \n\t"
145
146                 "paddw %%mm7, %%mm0             \n\t"
147                 "paddw %%mm7, %%mm1             \n\t"
148
149                 "pxor %%mm0, %%mm2              \n\t"
150                 "pxor %%mm1, %%mm3              \n\t"
151
152                 "pcmpeqw %%mm7, %%mm0           \n\t" // block[i] == 0 ? -1 : 0
153                 "pcmpeqw %%mm7, %%mm1           \n\t" // block[i] == 0 ? -1 : 0
154
155                 "pandn %%mm2, %%mm0             \n\t"
156                 "pandn %%mm3, %%mm1             \n\t"
157
158                 "movq %%mm0, (%0, %3)           \n\t"
159                 "movq %%mm1, 8(%0, %3)          \n\t"
160
161                 "add $16, %3                    \n\t"
162                 "jng 1b                         \n\t"
163                 ::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
164                 : "memory"
165         );
166 }
167
168 static void dct_unquantize_mpeg1_intra_mmx(MpegEncContext *s,
169                                      int16_t *block, int n, int qscale)
170 {
171     x86_reg nCoeffs;
172     const uint16_t *quant_matrix;
173     int block0;
174
175     av_assert2(s->block_last_index[n]>=0);
176
177     nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
178
179     if (n < 4)
180         block0 = block[0] * s->y_dc_scale;
181     else
182         block0 = block[0] * s->c_dc_scale;
183     /* XXX: only MPEG-1 */
184     quant_matrix = s->intra_matrix;
185 __asm__ volatile(
186                 "pcmpeqw %%mm7, %%mm7           \n\t"
187                 "psrlw $15, %%mm7               \n\t"
188                 "movd %2, %%mm6                 \n\t"
189                 "packssdw %%mm6, %%mm6          \n\t"
190                 "packssdw %%mm6, %%mm6          \n\t"
191                 "mov %3, %%"FF_REG_a"           \n\t"
192                 ".p2align 4                     \n\t"
193                 "1:                             \n\t"
194                 "movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
195                 "movq 8(%0, %%"FF_REG_a"), %%mm1\n\t"
196                 "movq (%1, %%"FF_REG_a"), %%mm4 \n\t"
197                 "movq 8(%1, %%"FF_REG_a"), %%mm5\n\t"
198                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
199                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
200                 "pxor %%mm2, %%mm2              \n\t"
201                 "pxor %%mm3, %%mm3              \n\t"
202                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
203                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
204                 "pxor %%mm2, %%mm0              \n\t"
205                 "pxor %%mm3, %%mm1              \n\t"
206                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
207                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
208                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*q
209                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*q
210                 "pxor %%mm4, %%mm4              \n\t"
211                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
212                 "pcmpeqw (%0, %%"FF_REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
213                 "pcmpeqw 8(%0, %%"FF_REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
214                 "psraw $3, %%mm0                \n\t"
215                 "psraw $3, %%mm1                \n\t"
216                 "psubw %%mm7, %%mm0             \n\t"
217                 "psubw %%mm7, %%mm1             \n\t"
218                 "por %%mm7, %%mm0               \n\t"
219                 "por %%mm7, %%mm1               \n\t"
220                 "pxor %%mm2, %%mm0              \n\t"
221                 "pxor %%mm3, %%mm1              \n\t"
222                 "psubw %%mm2, %%mm0             \n\t"
223                 "psubw %%mm3, %%mm1             \n\t"
224                 "pandn %%mm0, %%mm4             \n\t"
225                 "pandn %%mm1, %%mm5             \n\t"
226                 "movq %%mm4, (%0, %%"FF_REG_a") \n\t"
227                 "movq %%mm5, 8(%0, %%"FF_REG_a")\n\t"
228
229                 "add $16, %%"FF_REG_a"          \n\t"
230                 "js 1b                          \n\t"
231                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
232                 : "%"FF_REG_a, "memory"
233         );
234     block[0]= block0;
235 }
236
237 static void dct_unquantize_mpeg1_inter_mmx(MpegEncContext *s,
238                                      int16_t *block, int n, int qscale)
239 {
240     x86_reg nCoeffs;
241     const uint16_t *quant_matrix;
242
243     av_assert2(s->block_last_index[n]>=0);
244
245     nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
246
247         quant_matrix = s->inter_matrix;
248 __asm__ volatile(
249                 "pcmpeqw %%mm7, %%mm7           \n\t"
250                 "psrlw $15, %%mm7               \n\t"
251                 "movd %2, %%mm6                 \n\t"
252                 "packssdw %%mm6, %%mm6          \n\t"
253                 "packssdw %%mm6, %%mm6          \n\t"
254                 "mov %3, %%"FF_REG_a"           \n\t"
255                 ".p2align 4                     \n\t"
256                 "1:                             \n\t"
257                 "movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
258                 "movq 8(%0, %%"FF_REG_a"), %%mm1\n\t"
259                 "movq (%1, %%"FF_REG_a"), %%mm4 \n\t"
260                 "movq 8(%1, %%"FF_REG_a"), %%mm5\n\t"
261                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
262                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
263                 "pxor %%mm2, %%mm2              \n\t"
264                 "pxor %%mm3, %%mm3              \n\t"
265                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
266                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
267                 "pxor %%mm2, %%mm0              \n\t"
268                 "pxor %%mm3, %%mm1              \n\t"
269                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
270                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
271                 "paddw %%mm0, %%mm0             \n\t" // abs(block[i])*2
272                 "paddw %%mm1, %%mm1             \n\t" // abs(block[i])*2
273                 "paddw %%mm7, %%mm0             \n\t" // abs(block[i])*2 + 1
274                 "paddw %%mm7, %%mm1             \n\t" // abs(block[i])*2 + 1
275                 "pmullw %%mm4, %%mm0            \n\t" // (abs(block[i])*2 + 1)*q
276                 "pmullw %%mm5, %%mm1            \n\t" // (abs(block[i])*2 + 1)*q
277                 "pxor %%mm4, %%mm4              \n\t"
278                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
279                 "pcmpeqw (%0, %%"FF_REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
280                 "pcmpeqw 8(%0, %%"FF_REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
281                 "psraw $4, %%mm0                \n\t"
282                 "psraw $4, %%mm1                \n\t"
283                 "psubw %%mm7, %%mm0             \n\t"
284                 "psubw %%mm7, %%mm1             \n\t"
285                 "por %%mm7, %%mm0               \n\t"
286                 "por %%mm7, %%mm1               \n\t"
287                 "pxor %%mm2, %%mm0              \n\t"
288                 "pxor %%mm3, %%mm1              \n\t"
289                 "psubw %%mm2, %%mm0             \n\t"
290                 "psubw %%mm3, %%mm1             \n\t"
291                 "pandn %%mm0, %%mm4             \n\t"
292                 "pandn %%mm1, %%mm5             \n\t"
293                 "movq %%mm4, (%0, %%"FF_REG_a") \n\t"
294                 "movq %%mm5, 8(%0, %%"FF_REG_a")\n\t"
295
296                 "add $16, %%"FF_REG_a"          \n\t"
297                 "js 1b                          \n\t"
298                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
299                 : "%"FF_REG_a, "memory"
300         );
301 }
302
303 static void dct_unquantize_mpeg2_intra_mmx(MpegEncContext *s,
304                                      int16_t *block, int n, int qscale)
305 {
306     x86_reg nCoeffs;
307     const uint16_t *quant_matrix;
308     int block0;
309
310     av_assert2(s->block_last_index[n]>=0);
311
312     if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
313     else                 qscale <<= 1;
314
315     if(s->alternate_scan) nCoeffs= 63; //FIXME
316     else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
317
318     if (n < 4)
319         block0 = block[0] * s->y_dc_scale;
320     else
321         block0 = block[0] * s->c_dc_scale;
322     quant_matrix = s->intra_matrix;
323 __asm__ volatile(
324                 "pcmpeqw %%mm7, %%mm7           \n\t"
325                 "psrlw $15, %%mm7               \n\t"
326                 "movd %2, %%mm6                 \n\t"
327                 "packssdw %%mm6, %%mm6          \n\t"
328                 "packssdw %%mm6, %%mm6          \n\t"
329                 "mov %3, %%"FF_REG_a"           \n\t"
330                 ".p2align 4                     \n\t"
331                 "1:                             \n\t"
332                 "movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
333                 "movq 8(%0, %%"FF_REG_a"), %%mm1\n\t"
334                 "movq (%1, %%"FF_REG_a"), %%mm4 \n\t"
335                 "movq 8(%1, %%"FF_REG_a"), %%mm5\n\t"
336                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
337                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
338                 "pxor %%mm2, %%mm2              \n\t"
339                 "pxor %%mm3, %%mm3              \n\t"
340                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
341                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
342                 "pxor %%mm2, %%mm0              \n\t"
343                 "pxor %%mm3, %%mm1              \n\t"
344                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
345                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
346                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*q
347                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*q
348                 "pxor %%mm4, %%mm4              \n\t"
349                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
350                 "pcmpeqw (%0, %%"FF_REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
351                 "pcmpeqw 8(%0, %%"FF_REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
352                 "psraw $4, %%mm0                \n\t"
353                 "psraw $4, %%mm1                \n\t"
354                 "pxor %%mm2, %%mm0              \n\t"
355                 "pxor %%mm3, %%mm1              \n\t"
356                 "psubw %%mm2, %%mm0             \n\t"
357                 "psubw %%mm3, %%mm1             \n\t"
358                 "pandn %%mm0, %%mm4             \n\t"
359                 "pandn %%mm1, %%mm5             \n\t"
360                 "movq %%mm4, (%0, %%"FF_REG_a") \n\t"
361                 "movq %%mm5, 8(%0, %%"FF_REG_a")\n\t"
362
363                 "add $16, %%"FF_REG_a"          \n\t"
364                 "jng 1b                         \n\t"
365                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
366                 : "%"FF_REG_a, "memory"
367         );
368     block[0]= block0;
369         //Note, we do not do mismatch control for intra as errors cannot accumulate
370 }
371
372 static void dct_unquantize_mpeg2_inter_mmx(MpegEncContext *s,
373                                      int16_t *block, int n, int qscale)
374 {
375     x86_reg nCoeffs;
376     const uint16_t *quant_matrix;
377
378     av_assert2(s->block_last_index[n]>=0);
379
380     if (s->q_scale_type) qscale = ff_mpeg2_non_linear_qscale[qscale];
381     else                 qscale <<= 1;
382
383     if(s->alternate_scan) nCoeffs= 63; //FIXME
384     else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
385
386         quant_matrix = s->inter_matrix;
387 __asm__ volatile(
388                 "pcmpeqw %%mm7, %%mm7           \n\t"
389                 "psrlq $48, %%mm7               \n\t"
390                 "movd %2, %%mm6                 \n\t"
391                 "packssdw %%mm6, %%mm6          \n\t"
392                 "packssdw %%mm6, %%mm6          \n\t"
393                 "mov %3, %%"FF_REG_a"           \n\t"
394                 ".p2align 4                     \n\t"
395                 "1:                             \n\t"
396                 "movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
397                 "movq 8(%0, %%"FF_REG_a"), %%mm1\n\t"
398                 "movq (%1, %%"FF_REG_a"), %%mm4 \n\t"
399                 "movq 8(%1, %%"FF_REG_a"), %%mm5\n\t"
400                 "pmullw %%mm6, %%mm4            \n\t" // q=qscale*quant_matrix[i]
401                 "pmullw %%mm6, %%mm5            \n\t" // q=qscale*quant_matrix[i]
402                 "pxor %%mm2, %%mm2              \n\t"
403                 "pxor %%mm3, %%mm3              \n\t"
404                 "pcmpgtw %%mm0, %%mm2           \n\t" // block[i] < 0 ? -1 : 0
405                 "pcmpgtw %%mm1, %%mm3           \n\t" // block[i] < 0 ? -1 : 0
406                 "pxor %%mm2, %%mm0              \n\t"
407                 "pxor %%mm3, %%mm1              \n\t"
408                 "psubw %%mm2, %%mm0             \n\t" // abs(block[i])
409                 "psubw %%mm3, %%mm1             \n\t" // abs(block[i])
410                 "paddw %%mm0, %%mm0             \n\t" // abs(block[i])*2
411                 "paddw %%mm1, %%mm1             \n\t" // abs(block[i])*2
412                 "pmullw %%mm4, %%mm0            \n\t" // abs(block[i])*2*q
413                 "pmullw %%mm5, %%mm1            \n\t" // abs(block[i])*2*q
414                 "paddw %%mm4, %%mm0             \n\t" // (abs(block[i])*2 + 1)*q
415                 "paddw %%mm5, %%mm1             \n\t" // (abs(block[i])*2 + 1)*q
416                 "pxor %%mm4, %%mm4              \n\t"
417                 "pxor %%mm5, %%mm5              \n\t" // FIXME slow
418                 "pcmpeqw (%0, %%"FF_REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
419                 "pcmpeqw 8(%0, %%"FF_REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
420                 "psrlw $5, %%mm0                \n\t"
421                 "psrlw $5, %%mm1                \n\t"
422                 "pxor %%mm2, %%mm0              \n\t"
423                 "pxor %%mm3, %%mm1              \n\t"
424                 "psubw %%mm2, %%mm0             \n\t"
425                 "psubw %%mm3, %%mm1             \n\t"
426                 "pandn %%mm0, %%mm4             \n\t"
427                 "pandn %%mm1, %%mm5             \n\t"
428                 "pxor %%mm4, %%mm7              \n\t"
429                 "pxor %%mm5, %%mm7              \n\t"
430                 "movq %%mm4, (%0, %%"FF_REG_a") \n\t"
431                 "movq %%mm5, 8(%0, %%"FF_REG_a")\n\t"
432
433                 "add $16, %%"FF_REG_a"          \n\t"
434                 "jng 1b                         \n\t"
435                 "movd 124(%0, %3), %%mm0        \n\t"
436                 "movq %%mm7, %%mm6              \n\t"
437                 "psrlq $32, %%mm7               \n\t"
438                 "pxor %%mm6, %%mm7              \n\t"
439                 "movq %%mm7, %%mm6              \n\t"
440                 "psrlq $16, %%mm7               \n\t"
441                 "pxor %%mm6, %%mm7              \n\t"
442                 "pslld $31, %%mm7               \n\t"
443                 "psrlq $15, %%mm7               \n\t"
444                 "pxor %%mm7, %%mm0              \n\t"
445                 "movd %%mm0, 124(%0, %3)        \n\t"
446
447                 ::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "r" (-2*nCoeffs)
448                 : "%"FF_REG_a, "memory"
449         );
450 }
451
452 #endif /* HAVE_MMX_INLINE */
453
454 av_cold void ff_mpv_common_init_x86(MpegEncContext *s)
455 {
456 #if HAVE_MMX_INLINE
457     int cpu_flags = av_get_cpu_flags();
458
459     if (INLINE_MMX(cpu_flags)) {
460         s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_mmx;
461         s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_mmx;
462         s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_mmx;
463         s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_mmx;
464         if (!(s->avctx->flags & AV_CODEC_FLAG_BITEXACT))
465             s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_mmx;
466         s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_mmx;
467     }
468 #endif /* HAVE_MMX_INLINE */
469 }