1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
|
/*
* The simplest mpeg encoder (well, it was the simplest!)
* Copyright (c) 2000,2001 Fabrice Bellard
*
* Optimized for ia32 CPUs by Nick Kurshev <nickols_k@mail.ru>
* h263, mpeg1, mpeg2 dequantizer & draw_edges by Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/cpu.h"
#include "libavutil/x86_cpu.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/dsputil.h"
#include "libavcodec/mpegvideo.h"
#include "dsputil_mmx.h"
extern uint16_t inv_zigzag_direct16[64];
static void dct_unquantize_h263_intra_mmx(MpegEncContext *s,
DCTELEM *block, int n, int qscale)
{
x86_reg level, qmul, qadd, nCoeffs;
qmul = qscale << 1;
assert(s->block_last_index[n]>=0 || s->h263_aic);
if (!s->h263_aic) {
if (n < 4)
level = block[0] * s->y_dc_scale;
else
level = block[0] * s->c_dc_scale;
qadd = (qscale - 1) | 1;
}else{
qadd = 0;
level= block[0];
}
if(s->ac_pred)
nCoeffs=63;
else
nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
//printf("%d %d ", qmul, qadd);
__asm__ volatile(
"movd %1, %%mm6 \n\t" //qmul
"packssdw %%mm6, %%mm6 \n\t"
"packssdw %%mm6, %%mm6 \n\t"
"movd %2, %%mm5 \n\t" //qadd
"pxor %%mm7, %%mm7 \n\t"
"packssdw %%mm5, %%mm5 \n\t"
"packssdw %%mm5, %%mm5 \n\t"
"psubw %%mm5, %%mm7 \n\t"
"pxor %%mm4, %%mm4 \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%0, %3), %%mm0 \n\t"
"movq 8(%0, %3), %%mm1 \n\t"
"pmullw %%mm6, %%mm0 \n\t"
"pmullw %%mm6, %%mm1 \n\t"
"movq (%0, %3), %%mm2 \n\t"
"movq 8(%0, %3), %%mm3 \n\t"
"pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
"pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"paddw %%mm7, %%mm0 \n\t"
"paddw %%mm7, %%mm1 \n\t"
"pxor %%mm0, %%mm2 \n\t"
"pxor %%mm1, %%mm3 \n\t"
"pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0
"pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0
"pandn %%mm2, %%mm0 \n\t"
"pandn %%mm3, %%mm1 \n\t"
"movq %%mm0, (%0, %3) \n\t"
"movq %%mm1, 8(%0, %3) \n\t"
"add $16, %3 \n\t"
"jng 1b \n\t"
::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
: "memory"
);
block[0]= level;
}
static void dct_unquantize_h263_inter_mmx(MpegEncContext *s,
DCTELEM *block, int n, int qscale)
{
x86_reg qmul, qadd, nCoeffs;
qmul = qscale << 1;
qadd = (qscale - 1) | 1;
assert(s->block_last_index[n]>=0 || s->h263_aic);
nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
//printf("%d %d ", qmul, qadd);
__asm__ volatile(
"movd %1, %%mm6 \n\t" //qmul
"packssdw %%mm6, %%mm6 \n\t"
"packssdw %%mm6, %%mm6 \n\t"
"movd %2, %%mm5 \n\t" //qadd
"pxor %%mm7, %%mm7 \n\t"
"packssdw %%mm5, %%mm5 \n\t"
"packssdw %%mm5, %%mm5 \n\t"
"psubw %%mm5, %%mm7 \n\t"
"pxor %%mm4, %%mm4 \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%0, %3), %%mm0 \n\t"
"movq 8(%0, %3), %%mm1 \n\t"
"pmullw %%mm6, %%mm0 \n\t"
"pmullw %%mm6, %%mm1 \n\t"
"movq (%0, %3), %%mm2 \n\t"
"movq 8(%0, %3), %%mm3 \n\t"
"pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
"pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"paddw %%mm7, %%mm0 \n\t"
"paddw %%mm7, %%mm1 \n\t"
"pxor %%mm0, %%mm2 \n\t"
"pxor %%mm1, %%mm3 \n\t"
"pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0
"pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0
"pandn %%mm2, %%mm0 \n\t"
"pandn %%mm3, %%mm1 \n\t"
"movq %%mm0, (%0, %3) \n\t"
"movq %%mm1, 8(%0, %3) \n\t"
"add $16, %3 \n\t"
"jng 1b \n\t"
::"r" (block+nCoeffs), "rm"(qmul), "rm" (qadd), "r" (2*(-nCoeffs))
: "memory"
);
}
/*
NK:
Note: looking at PARANOID:
"enable all paranoid tests for rounding, overflows, etc..."
#ifdef PARANOID
if (level < -2048 || level > 2047)
fprintf(stderr, "unquant error %d %d\n", i, level);
#endif
We can suppose that result of two multiplications can't be greater than 0xFFFF
i.e. is 16-bit, so we use here only PMULLW instruction and can avoid
a complex multiplication.
=====================================================
Full formula for multiplication of 2 integer numbers
which are represent as high:low words:
input: value1 = high1:low1
value2 = high2:low2
output: value3 = value1*value2
value3=high3:low3 (on overflow: modulus 2^32 wrap-around)
this mean that for 0x123456 * 0x123456 correct result is 0x766cb0ce4
but this algorithm will compute only 0x66cb0ce4
this limited by 16-bit size of operands
---------------------------------
tlow1 = high1*low2
tlow2 = high2*low1
tlow1 = tlow1 + tlow2
high3:low3 = low1*low2
high3 += tlow1
*/
static void dct_unquantize_mpeg1_intra_mmx(MpegEncContext *s,
DCTELEM *block, int n, int qscale)
{
x86_reg nCoeffs;
const uint16_t *quant_matrix;
int block0;
assert(s->block_last_index[n]>=0);
nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
if (n < 4)
block0 = block[0] * s->y_dc_scale;
else
block0 = block[0] * s->c_dc_scale;
/* XXX: only mpeg1 */
quant_matrix = s->intra_matrix;
__asm__ volatile(
"pcmpeqw %%mm7, %%mm7 \n\t"
"psrlw $15, %%mm7 \n\t"
"movd %2, %%mm6 \n\t"
"packssdw %%mm6, %%mm6 \n\t"
"packssdw %%mm6, %%mm6 \n\t"
"mov %3, %%"REG_a" \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%0, %%"REG_a"), %%mm0 \n\t"
"movq 8(%0, %%"REG_a"), %%mm1 \n\t"
"movq (%1, %%"REG_a"), %%mm4 \n\t"
"movq 8(%1, %%"REG_a"), %%mm5 \n\t"
"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
"pxor %%mm2, %%mm2 \n\t"
"pxor %%mm3, %%mm3 \n\t"
"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
"pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
"pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
"pxor %%mm4, %%mm4 \n\t"
"pxor %%mm5, %%mm5 \n\t" // FIXME slow
"pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
"pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
"psraw $3, %%mm0 \n\t"
"psraw $3, %%mm1 \n\t"
"psubw %%mm7, %%mm0 \n\t"
"psubw %%mm7, %%mm1 \n\t"
"por %%mm7, %%mm0 \n\t"
"por %%mm7, %%mm1 \n\t"
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"psubw %%mm2, %%mm0 \n\t"
"psubw %%mm3, %%mm1 \n\t"
"pandn %%mm0, %%mm4 \n\t"
"pandn %%mm1, %%mm5 \n\t"
"movq %%mm4, (%0, %%"REG_a") \n\t"
"movq %%mm5, 8(%0, %%"REG_a") \n\t"
"add $16, %%"REG_a" \n\t"
"js 1b \n\t"
::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
: "%"REG_a, "memory"
);
block[0]= block0;
}
static void dct_unquantize_mpeg1_inter_mmx(MpegEncContext *s,
DCTELEM *block, int n, int qscale)
{
x86_reg nCoeffs;
const uint16_t *quant_matrix;
assert(s->block_last_index[n]>=0);
nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]+1;
quant_matrix = s->inter_matrix;
__asm__ volatile(
"pcmpeqw %%mm7, %%mm7 \n\t"
"psrlw $15, %%mm7 \n\t"
"movd %2, %%mm6 \n\t"
"packssdw %%mm6, %%mm6 \n\t"
"packssdw %%mm6, %%mm6 \n\t"
"mov %3, %%"REG_a" \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%0, %%"REG_a"), %%mm0 \n\t"
"movq 8(%0, %%"REG_a"), %%mm1 \n\t"
"movq (%1, %%"REG_a"), %%mm4 \n\t"
"movq 8(%1, %%"REG_a"), %%mm5 \n\t"
"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
"pxor %%mm2, %%mm2 \n\t"
"pxor %%mm3, %%mm3 \n\t"
"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
"paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
"paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
"paddw %%mm7, %%mm0 \n\t" // abs(block[i])*2 + 1
"paddw %%mm7, %%mm1 \n\t" // abs(block[i])*2 + 1
"pmullw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
"pmullw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
"pxor %%mm4, %%mm4 \n\t"
"pxor %%mm5, %%mm5 \n\t" // FIXME slow
"pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
"pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
"psraw $4, %%mm0 \n\t"
"psraw $4, %%mm1 \n\t"
"psubw %%mm7, %%mm0 \n\t"
"psubw %%mm7, %%mm1 \n\t"
"por %%mm7, %%mm0 \n\t"
"por %%mm7, %%mm1 \n\t"
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"psubw %%mm2, %%mm0 \n\t"
"psubw %%mm3, %%mm1 \n\t"
"pandn %%mm0, %%mm4 \n\t"
"pandn %%mm1, %%mm5 \n\t"
"movq %%mm4, (%0, %%"REG_a") \n\t"
"movq %%mm5, 8(%0, %%"REG_a") \n\t"
"add $16, %%"REG_a" \n\t"
"js 1b \n\t"
::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
: "%"REG_a, "memory"
);
}
static void dct_unquantize_mpeg2_intra_mmx(MpegEncContext *s,
DCTELEM *block, int n, int qscale)
{
x86_reg nCoeffs;
const uint16_t *quant_matrix;
int block0;
assert(s->block_last_index[n]>=0);
if(s->alternate_scan) nCoeffs= 63; //FIXME
else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
if (n < 4)
block0 = block[0] * s->y_dc_scale;
else
block0 = block[0] * s->c_dc_scale;
quant_matrix = s->intra_matrix;
__asm__ volatile(
"pcmpeqw %%mm7, %%mm7 \n\t"
"psrlw $15, %%mm7 \n\t"
"movd %2, %%mm6 \n\t"
"packssdw %%mm6, %%mm6 \n\t"
"packssdw %%mm6, %%mm6 \n\t"
"mov %3, %%"REG_a" \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%0, %%"REG_a"), %%mm0 \n\t"
"movq 8(%0, %%"REG_a"), %%mm1 \n\t"
"movq (%1, %%"REG_a"), %%mm4 \n\t"
"movq 8(%1, %%"REG_a"), %%mm5 \n\t"
"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
"pxor %%mm2, %%mm2 \n\t"
"pxor %%mm3, %%mm3 \n\t"
"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
"pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
"pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
"pxor %%mm4, %%mm4 \n\t"
"pxor %%mm5, %%mm5 \n\t" // FIXME slow
"pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
"pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
"psraw $3, %%mm0 \n\t"
"psraw $3, %%mm1 \n\t"
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"psubw %%mm2, %%mm0 \n\t"
"psubw %%mm3, %%mm1 \n\t"
"pandn %%mm0, %%mm4 \n\t"
"pandn %%mm1, %%mm5 \n\t"
"movq %%mm4, (%0, %%"REG_a") \n\t"
"movq %%mm5, 8(%0, %%"REG_a") \n\t"
"add $16, %%"REG_a" \n\t"
"jng 1b \n\t"
::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "g" (-2*nCoeffs)
: "%"REG_a, "memory"
);
block[0]= block0;
//Note, we do not do mismatch control for intra as errors cannot accumulate
}
static void dct_unquantize_mpeg2_inter_mmx(MpegEncContext *s,
DCTELEM *block, int n, int qscale)
{
x86_reg nCoeffs;
const uint16_t *quant_matrix;
assert(s->block_last_index[n]>=0);
if(s->alternate_scan) nCoeffs= 63; //FIXME
else nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ];
quant_matrix = s->inter_matrix;
__asm__ volatile(
"pcmpeqw %%mm7, %%mm7 \n\t"
"psrlq $48, %%mm7 \n\t"
"movd %2, %%mm6 \n\t"
"packssdw %%mm6, %%mm6 \n\t"
"packssdw %%mm6, %%mm6 \n\t"
"mov %3, %%"REG_a" \n\t"
".p2align 4 \n\t"
"1: \n\t"
"movq (%0, %%"REG_a"), %%mm0 \n\t"
"movq 8(%0, %%"REG_a"), %%mm1 \n\t"
"movq (%1, %%"REG_a"), %%mm4 \n\t"
"movq 8(%1, %%"REG_a"), %%mm5 \n\t"
"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
"pxor %%mm2, %%mm2 \n\t"
"pxor %%mm3, %%mm3 \n\t"
"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
"paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
"paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
"pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*2*q
"pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*2*q
"paddw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
"paddw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
"pxor %%mm4, %%mm4 \n\t"
"pxor %%mm5, %%mm5 \n\t" // FIXME slow
"pcmpeqw (%0, %%"REG_a"), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
"pcmpeqw 8(%0, %%"REG_a"), %%mm5\n\t" // block[i] == 0 ? -1 : 0
"psrlw $4, %%mm0 \n\t"
"psrlw $4, %%mm1 \n\t"
"pxor %%mm2, %%mm0 \n\t"
"pxor %%mm3, %%mm1 \n\t"
"psubw %%mm2, %%mm0 \n\t"
"psubw %%mm3, %%mm1 \n\t"
"pandn %%mm0, %%mm4 \n\t"
"pandn %%mm1, %%mm5 \n\t"
"pxor %%mm4, %%mm7 \n\t"
"pxor %%mm5, %%mm7 \n\t"
"movq %%mm4, (%0, %%"REG_a") \n\t"
"movq %%mm5, 8(%0, %%"REG_a") \n\t"
"add $16, %%"REG_a" \n\t"
"jng 1b \n\t"
"movd 124(%0, %3), %%mm0 \n\t"
"movq %%mm7, %%mm6 \n\t"
"psrlq $32, %%mm7 \n\t"
"pxor %%mm6, %%mm7 \n\t"
"movq %%mm7, %%mm6 \n\t"
"psrlq $16, %%mm7 \n\t"
"pxor %%mm6, %%mm7 \n\t"
"pslld $31, %%mm7 \n\t"
"psrlq $15, %%mm7 \n\t"
"pxor %%mm7, %%mm0 \n\t"
"movd %%mm0, 124(%0, %3) \n\t"
::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "rm" (qscale), "r" (-2*nCoeffs)
: "%"REG_a, "memory"
);
}
static void denoise_dct_mmx(MpegEncContext *s, DCTELEM *block){
const int intra= s->mb_intra;
int *sum= s->dct_error_sum[intra];
uint16_t *offset= s->dct_offset[intra];
s->dct_count[intra]++;
__asm__ volatile(
"pxor %%mm7, %%mm7 \n\t"
"1: \n\t"
"pxor %%mm0, %%mm0 \n\t"
"pxor %%mm1, %%mm1 \n\t"
"movq (%0), %%mm2 \n\t"
"movq 8(%0), %%mm3 \n\t"
"pcmpgtw %%mm2, %%mm0 \n\t"
"pcmpgtw %%mm3, %%mm1 \n\t"
"pxor %%mm0, %%mm2 \n\t"
"pxor %%mm1, %%mm3 \n\t"
"psubw %%mm0, %%mm2 \n\t"
"psubw %%mm1, %%mm3 \n\t"
"movq %%mm2, %%mm4 \n\t"
"movq %%mm3, %%mm5 \n\t"
"psubusw (%2), %%mm2 \n\t"
"psubusw 8(%2), %%mm3 \n\t"
"pxor %%mm0, %%mm2 \n\t"
"pxor %%mm1, %%mm3 \n\t"
"psubw %%mm0, %%mm2 \n\t"
"psubw %%mm1, %%mm3 \n\t"
"movq %%mm2, (%0) \n\t"
"movq %%mm3, 8(%0) \n\t"
"movq %%mm4, %%mm2 \n\t"
"movq %%mm5, %%mm3 \n\t"
"punpcklwd %%mm7, %%mm4 \n\t"
"punpckhwd %%mm7, %%mm2 \n\t"
"punpcklwd %%mm7, %%mm5 \n\t"
"punpckhwd %%mm7, %%mm3 \n\t"
"paddd (%1), %%mm4 \n\t"
"paddd 8(%1), %%mm2 \n\t"
"paddd 16(%1), %%mm5 \n\t"
"paddd 24(%1), %%mm3 \n\t"
"movq %%mm4, (%1) \n\t"
"movq %%mm2, 8(%1) \n\t"
"movq %%mm5, 16(%1) \n\t"
"movq %%mm3, 24(%1) \n\t"
"add $16, %0 \n\t"
"add $32, %1 \n\t"
"add $16, %2 \n\t"
"cmp %3, %0 \n\t"
" jb 1b \n\t"
: "+r" (block), "+r" (sum), "+r" (offset)
: "r"(block+64)
);
}
static void denoise_dct_sse2(MpegEncContext *s, DCTELEM *block){
const int intra= s->mb_intra;
int *sum= s->dct_error_sum[intra];
uint16_t *offset= s->dct_offset[intra];
s->dct_count[intra]++;
__asm__ volatile(
"pxor %%xmm7, %%xmm7 \n\t"
"1: \n\t"
"pxor %%xmm0, %%xmm0 \n\t"
"pxor %%xmm1, %%xmm1 \n\t"
"movdqa (%0), %%xmm2 \n\t"
"movdqa 16(%0), %%xmm3 \n\t"
"pcmpgtw %%xmm2, %%xmm0 \n\t"
"pcmpgtw %%xmm3, %%xmm1 \n\t"
"pxor %%xmm0, %%xmm2 \n\t"
"pxor %%xmm1, %%xmm3 \n\t"
"psubw %%xmm0, %%xmm2 \n\t"
"psubw %%xmm1, %%xmm3 \n\t"
"movdqa %%xmm2, %%xmm4 \n\t"
"movdqa %%xmm3, %%xmm5 \n\t"
"psubusw (%2), %%xmm2 \n\t"
"psubusw 16(%2), %%xmm3 \n\t"
"pxor %%xmm0, %%xmm2 \n\t"
"pxor %%xmm1, %%xmm3 \n\t"
"psubw %%xmm0, %%xmm2 \n\t"
"psubw %%xmm1, %%xmm3 \n\t"
"movdqa %%xmm2, (%0) \n\t"
"movdqa %%xmm3, 16(%0) \n\t"
"movdqa %%xmm4, %%xmm6 \n\t"
"movdqa %%xmm5, %%xmm0 \n\t"
"punpcklwd %%xmm7, %%xmm4 \n\t"
"punpckhwd %%xmm7, %%xmm6 \n\t"
"punpcklwd %%xmm7, %%xmm5 \n\t"
"punpckhwd %%xmm7, %%xmm0 \n\t"
"paddd (%1), %%xmm4 \n\t"
"paddd 16(%1), %%xmm6 \n\t"
"paddd 32(%1), %%xmm5 \n\t"
"paddd 48(%1), %%xmm0 \n\t"
"movdqa %%xmm4, (%1) \n\t"
"movdqa %%xmm6, 16(%1) \n\t"
"movdqa %%xmm5, 32(%1) \n\t"
"movdqa %%xmm0, 48(%1) \n\t"
"add $32, %0 \n\t"
"add $64, %1 \n\t"
"add $32, %2 \n\t"
"cmp %3, %0 \n\t"
" jb 1b \n\t"
: "+r" (block), "+r" (sum), "+r" (offset)
: "r"(block+64)
XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
"%xmm4", "%xmm5", "%xmm6", "%xmm7")
);
}
#if HAVE_SSSE3
#define HAVE_SSSE3_BAK
#endif
#undef HAVE_SSSE3
#define HAVE_SSSE3 0
#undef HAVE_SSE2
#undef HAVE_MMX2
#define HAVE_SSE2 0
#define HAVE_MMX2 0
#define RENAME(a) a ## _MMX
#define RENAMEl(a) a ## _mmx
#include "mpegvideo_mmx_template.c"
#undef HAVE_MMX2
#define HAVE_MMX2 1
#undef RENAME
#undef RENAMEl
#define RENAME(a) a ## _MMX2
#define RENAMEl(a) a ## _mmx2
#include "mpegvideo_mmx_template.c"
#undef HAVE_SSE2
#define HAVE_SSE2 1
#undef RENAME
#undef RENAMEl
#define RENAME(a) a ## _SSE2
#define RENAMEl(a) a ## _sse2
#include "mpegvideo_mmx_template.c"
#ifdef HAVE_SSSE3_BAK
#undef HAVE_SSSE3
#define HAVE_SSSE3 1
#undef RENAME
#undef RENAMEl
#define RENAME(a) a ## _SSSE3
#define RENAMEl(a) a ## _sse2
#include "mpegvideo_mmx_template.c"
#endif
void MPV_common_init_mmx(MpegEncContext *s)
{
int mm_flags = av_get_cpu_flags();
if (mm_flags & AV_CPU_FLAG_MMX) {
const int dct_algo = s->avctx->dct_algo;
s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_mmx;
s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_mmx;
s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_mmx;
s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_mmx;
if(!(s->flags & CODEC_FLAG_BITEXACT))
s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_mmx;
s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_mmx;
if (mm_flags & AV_CPU_FLAG_SSE2) {
s->denoise_dct= denoise_dct_sse2;
} else {
s->denoise_dct= denoise_dct_mmx;
}
if(dct_algo==FF_DCT_AUTO || dct_algo==FF_DCT_MMX){
#if HAVE_SSSE3
if(mm_flags & AV_CPU_FLAG_SSSE3){
s->dct_quantize= dct_quantize_SSSE3;
} else
#endif
if(mm_flags & AV_CPU_FLAG_SSE2){
s->dct_quantize= dct_quantize_SSE2;
} else if(mm_flags & AV_CPU_FLAG_MMX2){
s->dct_quantize= dct_quantize_MMX2;
} else {
s->dct_quantize= dct_quantize_MMX;
}
}
}
}
|
