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
|
/*
* MMX optimized DSP utils
* Copyright (c) 2000, 2001 Fabrice Bellard.
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
*/
#include "../dsputil.h"
#include "../simple_idct.h"
int mm_flags; /* multimedia extension flags */
int pix_abs16x16_mmx(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs16x16_x2_mmx(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs16x16_y2_mmx(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs16x16_xy2_mmx(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs16x16_mmx2(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs16x16_x2_mmx2(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs16x16_y2_mmx2(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs16x16_xy2_mmx2(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs8x8_mmx(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs8x8_x2_mmx(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs8x8_y2_mmx(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs8x8_xy2_mmx(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs8x8_mmx2(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs8x8_x2_mmx2(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs8x8_y2_mmx2(UINT8 *blk1, UINT8 *blk2, int lx);
int pix_abs8x8_xy2_mmx2(UINT8 *blk1, UINT8 *blk2, int lx);
/* external functions, from idct_mmx.c */
void ff_mmx_idct(DCTELEM *block);
void ff_mmxext_idct(DCTELEM *block);
/* pixel operations */
static const uint64_t mm_bone __attribute__ ((aligned(8))) = 0x0101010101010101ULL;
static const uint64_t mm_wone __attribute__ ((aligned(8))) = 0x0001000100010001ULL;
static const uint64_t mm_wtwo __attribute__ ((aligned(8))) = 0x0002000200020002ULL;
#define JUMPALIGN() __asm __volatile (".balign 8"::)
#define MOVQ_ZERO(regd) __asm __volatile ("pxor %%" #regd ", %%" #regd ::)
#define MOVQ_WONE(regd) \
__asm __volatile ( \
"pcmpeqd %%" #regd ", %%" #regd " \n\t" \
"psrlw $15, %%" #regd ::)
#define MOVQ_BFE(regd) \
__asm __volatile ( \
"pcmpeqd %%" #regd ", %%" #regd " \n\t"\
"paddb %%" #regd ", %%" #regd " \n\t" ::)
#ifndef PIC
#define MOVQ_BONE(regd) __asm __volatile ("movq %0, %%" #regd " \n\t" ::"m"(mm_bone))
#define MOVQ_WTWO(regd) __asm __volatile ("movq %0, %%" #regd " \n\t" ::"m"(mm_wtwo))
#else
// for shared library it's better to use this way for accessing constants
// pcmpeqd -> -1
#define MOVQ_BONE(regd) \
__asm __volatile ( \
"pcmpeqd %%" #regd ", %%" #regd " \n\t" \
"psrlw $15, %%" #regd " \n\t" \
"packuswb %%" #regd ", %%" #regd " \n\t" ::)
#define MOVQ_WTWO(regd) \
__asm __volatile ( \
"pcmpeqd %%" #regd ", %%" #regd " \n\t" \
"psrlw $15, %%" #regd " \n\t" \
"psllw $1, %%" #regd " \n\t"::)
#endif
// using regr as temporary and for the output result
// first argument is unmodifed and second is trashed
// regfe is supposed to contain 0xfefefefefefefefe
#define PAVGB_MMX_NO_RND(rega, regb, regr, regfe) \
"movq " #rega ", " #regr " \n\t"\
"pand " #regb ", " #regr " \n\t"\
"pxor " #rega ", " #regb " \n\t"\
"pand " #regfe "," #regb " \n\t"\
"psrlq $1, " #regb " \n\t"\
"paddb " #regb ", " #regr " \n\t"
#define PAVGB_MMX(rega, regb, regr, regfe) \
"movq " #rega ", " #regr " \n\t"\
"por " #regb ", " #regr " \n\t"\
"pxor " #rega ", " #regb " \n\t"\
"pand " #regfe "," #regb " \n\t"\
"psrlq $1, " #regb " \n\t"\
"psubb " #regb ", " #regr " \n\t"
// mm6 is supposed to contain 0xfefefefefefefefe
#define PAVGBP_MMX_NO_RND(rega, regb, regr, regc, regd, regp) \
"movq " #rega ", " #regr " \n\t"\
"movq " #regc ", " #regp " \n\t"\
"pand " #regb ", " #regr " \n\t"\
"pand " #regd ", " #regp " \n\t"\
"pxor " #rega ", " #regb " \n\t"\
"pxor " #regc ", " #regd " \n\t"\
"pand %%mm6, " #regb " \n\t"\
"pand %%mm6, " #regd " \n\t"\
"psrlq $1, " #regb " \n\t"\
"psrlq $1, " #regd " \n\t"\
"paddb " #regb ", " #regr " \n\t"\
"paddb " #regd ", " #regp " \n\t"
#define PAVGBP_MMX(rega, regb, regr, regc, regd, regp) \
"movq " #rega ", " #regr " \n\t"\
"movq " #regc ", " #regp " \n\t"\
"por " #regb ", " #regr " \n\t"\
"por " #regd ", " #regp " \n\t"\
"pxor " #rega ", " #regb " \n\t"\
"pxor " #regc ", " #regd " \n\t"\
"pand %%mm6, " #regb " \n\t"\
"pand %%mm6, " #regd " \n\t"\
"psrlq $1, " #regd " \n\t"\
"psrlq $1, " #regb " \n\t"\
"psubb " #regb ", " #regr " \n\t"\
"psubb " #regd ", " #regp " \n\t"
/***********************************/
/* MMX no rounding */
#define DEF(x, y) x ## _no_rnd_ ## y ##_mmx
#define SET_RND MOVQ_WONE
#define PAVGBP(a, b, c, d, e, f) PAVGBP_MMX_NO_RND(a, b, c, d, e, f)
#define PAVGB(a, b, c, e) PAVGB_MMX_NO_RND(a, b, c, e)
#include "dsputil_mmx_rnd.h"
#undef DEF
#undef SET_RND
#undef PAVGBP
#undef PAVGB
/***********************************/
/* MMX rounding */
#define DEF(x, y) x ## _ ## y ##_mmx
#define SET_RND MOVQ_WTWO
#define PAVGBP(a, b, c, d, e, f) PAVGBP_MMX(a, b, c, d, e, f)
#define PAVGB(a, b, c, e) PAVGB_MMX(a, b, c, e)
#include "dsputil_mmx_rnd.h"
#undef DEF
#undef SET_RND
#undef PAVGBP
#undef PAVGB
/***********************************/
/* 3Dnow specific */
#define DEF(x) x ## _3dnow
/* for Athlons PAVGUSB is prefered */
#define PAVGB "pavgusb"
#include "dsputil_mmx_avg.h"
#undef DEF
#undef PAVGB
/***********************************/
/* MMX2 specific */
#define DEF(x) x ## _mmx2
/* Introduced only in MMX2 set */
#define PAVGB "pavgb"
#include "dsputil_mmx_avg.h"
#undef DEF
#undef PAVGB
/***********************************/
/* standard MMX */
static void get_pixels_mmx(DCTELEM *block, const UINT8 *pixels, int line_size)
{
asm volatile(
"movl $-128, %%eax \n\t"
"pxor %%mm7, %%mm7 \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%0), %%mm0 \n\t"
"movq (%0, %2), %%mm2 \n\t"
"movq %%mm0, %%mm1 \n\t"
"movq %%mm2, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpckhbw %%mm7, %%mm1 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
"punpckhbw %%mm7, %%mm3 \n\t"
"movq %%mm0, (%1, %%eax)\n\t"
"movq %%mm1, 8(%1, %%eax)\n\t"
"movq %%mm2, 16(%1, %%eax)\n\t"
"movq %%mm3, 24(%1, %%eax)\n\t"
"addl %3, %0 \n\t"
"addl $32, %%eax \n\t"
"js 1b \n\t"
: "+r" (pixels)
: "r" (block+64), "r" (line_size), "r" (line_size*2)
: "%eax"
);
}
static void diff_pixels_mmx(DCTELEM *block, const UINT8 *s1, const UINT8 *s2, int stride)
{
asm volatile(
"pxor %%mm7, %%mm7 \n\t"
"movl $-128, %%eax \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%0), %%mm0 \n\t"
"movq (%1), %%mm2 \n\t"
"movq %%mm0, %%mm1 \n\t"
"movq %%mm2, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpckhbw %%mm7, %%mm1 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
"punpckhbw %%mm7, %%mm3 \n\t"
"psubw %%mm2, %%mm0 \n\t"
"psubw %%mm3, %%mm1 \n\t"
"movq %%mm0, (%2, %%eax)\n\t"
"movq %%mm1, 8(%2, %%eax)\n\t"
"addl %3, %0 \n\t"
"addl %3, %1 \n\t"
"addl $16, %%eax \n\t"
"jnz 1b \n\t"
: "+r" (s1), "+r" (s2)
: "r" (block+64), "r" (stride)
: "%eax"
);
}
static void put_pixels_clamped_mmx(const DCTELEM *block, UINT8 *pixels, int line_size)
{
const DCTELEM *p;
UINT8 *pix;
/* read the pixels */
p = block;
pix = pixels;
/* unrolled loop */
__asm __volatile(
"movq %3, %%mm0\n\t"
"movq 8%3, %%mm1\n\t"
"movq 16%3, %%mm2\n\t"
"movq 24%3, %%mm3\n\t"
"movq 32%3, %%mm4\n\t"
"movq 40%3, %%mm5\n\t"
"movq 48%3, %%mm6\n\t"
"movq 56%3, %%mm7\n\t"
"packuswb %%mm1, %%mm0\n\t"
"packuswb %%mm3, %%mm2\n\t"
"packuswb %%mm5, %%mm4\n\t"
"packuswb %%mm7, %%mm6\n\t"
"movq %%mm0, (%0)\n\t"
"movq %%mm2, (%0, %1)\n\t"
"movq %%mm4, (%0, %1, 2)\n\t"
"movq %%mm6, (%0, %2)\n\t"
::"r" (pix), "r" (line_size), "r" (line_size*3), "m"(*p)
:"memory");
pix += line_size*4;
p += 32;
// if here would be an exact copy of the code above
// compiler would generate some very strange code
// thus using "r"
__asm __volatile(
"movq (%3), %%mm0\n\t"
"movq 8(%3), %%mm1\n\t"
"movq 16(%3), %%mm2\n\t"
"movq 24(%3), %%mm3\n\t"
"movq 32(%3), %%mm4\n\t"
"movq 40(%3), %%mm5\n\t"
"movq 48(%3), %%mm6\n\t"
"movq 56(%3), %%mm7\n\t"
"packuswb %%mm1, %%mm0\n\t"
"packuswb %%mm3, %%mm2\n\t"
"packuswb %%mm5, %%mm4\n\t"
"packuswb %%mm7, %%mm6\n\t"
"movq %%mm0, (%0)\n\t"
"movq %%mm2, (%0, %1)\n\t"
"movq %%mm4, (%0, %1, 2)\n\t"
"movq %%mm6, (%0, %2)\n\t"
::"r" (pix), "r" (line_size), "r" (line_size*3), "r"(p)
:"memory");
}
static void add_pixels_clamped_mmx(const DCTELEM *block, UINT8 *pixels, int line_size)
{
const DCTELEM *p;
UINT8 *pix;
int i;
/* read the pixels */
p = block;
pix = pixels;
MOVQ_ZERO(mm7);
i = 4;
do {
__asm __volatile(
"movq (%2), %%mm0\n\t"
"movq 8(%2), %%mm1\n\t"
"movq 16(%2), %%mm2\n\t"
"movq 24(%2), %%mm3\n\t"
"movq %0, %%mm4\n\t"
"movq %1, %%mm6\n\t"
"movq %%mm4, %%mm5\n\t"
"punpcklbw %%mm7, %%mm4\n\t"
"punpckhbw %%mm7, %%mm5\n\t"
"paddsw %%mm4, %%mm0\n\t"
"paddsw %%mm5, %%mm1\n\t"
"movq %%mm6, %%mm5\n\t"
"punpcklbw %%mm7, %%mm6\n\t"
"punpckhbw %%mm7, %%mm5\n\t"
"paddsw %%mm6, %%mm2\n\t"
"paddsw %%mm5, %%mm3\n\t"
"packuswb %%mm1, %%mm0\n\t"
"packuswb %%mm3, %%mm2\n\t"
"movq %%mm0, %0\n\t"
"movq %%mm2, %1\n\t"
:"+m"(*pix), "+m"(*(pix+line_size))
:"r"(p)
:"memory");
pix += line_size*2;
p += 16;
} while (--i);
}
static void put_pixels_mmx(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
__asm __volatile(
"lea (%3, %3), %%eax \n\t"
".balign 8 \n\t"
"1: \n\t"
"movq (%1), %%mm0 \n\t"
"movq (%1, %3), %%mm1 \n\t"
"movq %%mm0, (%2) \n\t"
"movq %%mm1, (%2, %3) \n\t"
"addl %%eax, %1 \n\t"
"addl %%eax, %2 \n\t"
"movq (%1), %%mm0 \n\t"
"movq (%1, %3), %%mm1 \n\t"
"movq %%mm0, (%2) \n\t"
"movq %%mm1, (%2, %3) \n\t"
"addl %%eax, %1 \n\t"
"addl %%eax, %2 \n\t"
"subl $4, %0 \n\t"
"jnz 1b \n\t"
: "+g"(h), "+r" (pixels), "+r" (block)
: "r"(line_size)
: "%eax", "memory"
);
}
static void clear_blocks_mmx(DCTELEM *blocks)
{
__asm __volatile(
"pxor %%mm7, %%mm7 \n\t"
"movl $-128*6, %%eax \n\t"
"1: \n\t"
"movq %%mm7, (%0, %%eax) \n\t"
"movq %%mm7, 8(%0, %%eax) \n\t"
"movq %%mm7, 16(%0, %%eax) \n\t"
"movq %%mm7, 24(%0, %%eax) \n\t"
"addl $32, %%eax \n\t"
" js 1b \n\t"
: : "r" (((int)blocks)+128*6)
: "%eax"
);
}
#if 0
static void just_return() { return; }
#endif
void dsputil_init_mmx(void)
{
mm_flags = mm_support();
#if 1
printf("libavcodec: CPU flags:");
if (mm_flags & MM_MMX)
printf(" mmx");
if (mm_flags & MM_MMXEXT)
printf(" mmxext");
if (mm_flags & MM_3DNOW)
printf(" 3dnow");
if (mm_flags & MM_SSE)
printf(" sse");
if (mm_flags & MM_SSE2)
printf(" sse2");
printf("\n");
#endif
if (mm_flags & MM_MMX) {
get_pixels = get_pixels_mmx;
diff_pixels = diff_pixels_mmx;
put_pixels_clamped = put_pixels_clamped_mmx;
add_pixels_clamped = add_pixels_clamped_mmx;
clear_blocks= clear_blocks_mmx;
pix_abs16x16 = pix_abs16x16_mmx;
pix_abs16x16_x2 = pix_abs16x16_x2_mmx;
pix_abs16x16_y2 = pix_abs16x16_y2_mmx;
pix_abs16x16_xy2 = pix_abs16x16_xy2_mmx;
pix_abs8x8 = pix_abs8x8_mmx;
pix_abs8x8_x2 = pix_abs8x8_x2_mmx;
pix_abs8x8_y2 = pix_abs8x8_y2_mmx;
pix_abs8x8_xy2= pix_abs8x8_xy2_mmx;
put_pixels_tab[0] = put_pixels_mmx;
put_pixels_tab[1] = put_pixels_x2_mmx;
put_pixels_tab[2] = put_pixels_y2_mmx;
put_pixels_tab[3] = put_pixels_xy2_mmx;
put_no_rnd_pixels_tab[0] = put_pixels_mmx;
put_no_rnd_pixels_tab[1] = put_no_rnd_pixels_x2_mmx;
put_no_rnd_pixels_tab[2] = put_no_rnd_pixels_y2_mmx;
put_no_rnd_pixels_tab[3] = put_no_rnd_pixels_xy2_mmx;
avg_pixels_tab[0] = avg_pixels_mmx;
avg_pixels_tab[1] = avg_pixels_x2_mmx;
avg_pixels_tab[2] = avg_pixels_y2_mmx;
avg_pixels_tab[3] = avg_pixels_xy2_mmx;
avg_no_rnd_pixels_tab[0] = avg_no_rnd_pixels_mmx;
avg_no_rnd_pixels_tab[1] = avg_no_rnd_pixels_x2_mmx;
avg_no_rnd_pixels_tab[2] = avg_no_rnd_pixels_y2_mmx;
avg_no_rnd_pixels_tab[3] = avg_no_rnd_pixels_xy2_mmx;
if (mm_flags & MM_MMXEXT) {
pix_abs16x16 = pix_abs16x16_mmx2;
pix_abs16x16_x2 = pix_abs16x16_x2_mmx2;
pix_abs16x16_y2 = pix_abs16x16_y2_mmx2;
pix_abs16x16_xy2= pix_abs16x16_xy2_mmx2;
pix_abs8x8 = pix_abs8x8_mmx2;
pix_abs8x8_x2 = pix_abs8x8_x2_mmx2;
pix_abs8x8_y2 = pix_abs8x8_y2_mmx2;
pix_abs8x8_xy2= pix_abs8x8_xy2_mmx2;
put_pixels_tab[1] = put_pixels_x2_mmx2;
put_pixels_tab[2] = put_pixels_y2_mmx2;
put_no_rnd_pixels_tab[1] = put_no_rnd_pixels_x2_mmx2;
put_no_rnd_pixels_tab[2] = put_no_rnd_pixels_y2_mmx2;
avg_pixels_tab[0] = avg_pixels_mmx2;
avg_pixels_tab[1] = avg_pixels_x2_mmx2;
avg_pixels_tab[2] = avg_pixels_y2_mmx2;
avg_pixels_tab[3] = avg_pixels_xy2_mmx2;
} else if (mm_flags & MM_3DNOW) {
put_pixels_tab[1] = put_pixels_x2_3dnow;
put_pixels_tab[2] = put_pixels_y2_3dnow;
put_no_rnd_pixels_tab[1] = put_no_rnd_pixels_x2_3dnow;
put_no_rnd_pixels_tab[2] = put_no_rnd_pixels_y2_3dnow;
avg_pixels_tab[0] = avg_pixels_3dnow;
avg_pixels_tab[1] = avg_pixels_x2_3dnow;
avg_pixels_tab[2] = avg_pixels_y2_3dnow;
avg_pixels_tab[3] = avg_pixels_xy2_3dnow;
}
/* idct */
if (mm_flags & MM_MMXEXT) {
ff_idct = ff_mmxext_idct;
} else {
ff_idct = ff_mmx_idct;
}
#ifdef SIMPLE_IDCT
// ff_idct = simple_idct;
ff_idct = simple_idct_mmx;
#endif
}
#if 0
// for speed testing
get_pixels = just_return;
put_pixels_clamped = just_return;
add_pixels_clamped = just_return;
pix_abs16x16 = just_return;
pix_abs16x16_x2 = just_return;
pix_abs16x16_y2 = just_return;
pix_abs16x16_xy2 = just_return;
put_pixels_tab[0] = just_return;
put_pixels_tab[1] = just_return;
put_pixels_tab[2] = just_return;
put_pixels_tab[3] = just_return;
put_no_rnd_pixels_tab[0] = just_return;
put_no_rnd_pixels_tab[1] = just_return;
put_no_rnd_pixels_tab[2] = just_return;
put_no_rnd_pixels_tab[3] = just_return;
avg_pixels_tab[0] = just_return;
avg_pixels_tab[1] = just_return;
avg_pixels_tab[2] = just_return;
avg_pixels_tab[3] = just_return;
avg_no_rnd_pixels_tab[0] = just_return;
avg_no_rnd_pixels_tab[1] = just_return;
avg_no_rnd_pixels_tab[2] = just_return;
avg_no_rnd_pixels_tab[3] = just_return;
//av_fdct = just_return;
//ff_idct = just_return;
#endif
}
void gen_idct_put(UINT8 *dest, int line_size, DCTELEM *block);
/**
* this will send coeff matrixes which would have different results for the 16383 type MMX vs C IDCTs to the C IDCT
*/
void bit_exact_idct_put(UINT8 *dest, int line_size, INT16 *block){
if( block[0]>1022 && block[1]==0 && block[4 ]==0 && block[5 ]==0
&& block[8]==0 && block[9]==0 && block[12]==0 && block[13]==0){
int16_t tmp[64];
int i;
for(i=0; i<64; i++)
tmp[i]= block[i];
for(i=0; i<64; i++)
block[i]= tmp[block_permute_op(i)];
simple_idct_put(dest, line_size, block);
}
else
gen_idct_put(dest, line_size, block);
}
/* remove any non bit exact operation (testing purpose). NOTE that
this function should be kept as small as possible because it is
always difficult to test automatically non bit exact cases. */
void dsputil_set_bit_exact_mmx(void)
{
if (mm_flags & MM_MMX) {
if (mm_flags & MM_MMXEXT) {
put_no_rnd_pixels_tab[1] = put_no_rnd_pixels_x2_mmx;
put_no_rnd_pixels_tab[2] = put_no_rnd_pixels_y2_mmx;
avg_pixels_tab[3] = avg_pixels_xy2_mmx;
pix_abs16x16_x2 = pix_abs16x16_x2_mmx;
pix_abs16x16_y2 = pix_abs16x16_y2_mmx;
pix_abs16x16_xy2 = pix_abs16x16_xy2_mmx;
pix_abs8x8_x2 = pix_abs8x8_x2_mmx;
pix_abs8x8_y2 = pix_abs8x8_y2_mmx;
pix_abs8x8_xy2= pix_abs8x8_xy2_mmx;
} else if (mm_flags & MM_3DNOW) {
put_no_rnd_pixels_tab[1] = put_no_rnd_pixels_x2_mmx;
put_no_rnd_pixels_tab[2] = put_no_rnd_pixels_y2_mmx;
avg_pixels_tab[3] = avg_pixels_xy2_mmx;
}
#ifdef SIMPLE_IDCT
if(ff_idct_put==gen_idct_put && ff_idct == simple_idct_mmx)
ff_idct_put= bit_exact_idct_put;
#endif
}
}
|
