2
* MMX optimized forward DCT
3
* The gcc porting is Copyright (c) 2001 Fabrice Bellard.
4
* cleanup/optimizations are Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5
* SSE2 optimization is Copyright (c) 2004 Denes Balatoni.
7
* from fdctam32.c - AP922 MMX(3D-Now) forward-DCT
9
* Intel Application Note AP-922 - fast, precise implementation of DCT
10
* http://developer.intel.com/vtune/cbts/appnotes.htm
12
* Also of inspiration:
13
* a page about fdct at http://www.geocities.com/ssavekar/dct.htm
14
* Skal's fdct at http://skal.planet-d.net/coding/dct.html
17
#include "../dsputil.h"
20
#define ATTR_ALIGN(align) __attribute__ ((__aligned__ (align)))
22
//////////////////////////////////////////////////////////////////////
24
// constants for the forward DCT
25
// -----------------------------
27
// Be sure to check that your compiler is aligning all constants to QWORD
28
// (8-byte) memory boundaries! Otherwise the unaligned memory access will
29
// severely stall MMX execution.
31
//////////////////////////////////////////////////////////////////////
33
#define BITS_FRW_ACC 3 //; 2 or 3 for accuracy
34
#define SHIFT_FRW_COL BITS_FRW_ACC
35
#define SHIFT_FRW_ROW (BITS_FRW_ACC + 17 - 3)
36
#define RND_FRW_ROW (1 << (SHIFT_FRW_ROW-1))
37
//#define RND_FRW_COL (1 << (SHIFT_FRW_COL-1))
39
//concatenated table, for forward DCT transformation
40
static const int16_t fdct_tg_all_16[] ATTR_ALIGN(8) = {
41
13036, 13036, 13036, 13036, // tg * (2<<16) + 0.5
42
27146, 27146, 27146, 27146, // tg * (2<<16) + 0.5
43
-21746, -21746, -21746, -21746, // tg * (2<<16) + 0.5
46
static const int16_t ocos_4_16[4] ATTR_ALIGN(8) = {
47
23170, 23170, 23170, 23170, //cos * (2<<15) + 0.5
50
static const int64_t fdct_one_corr ATTR_ALIGN(8) = 0x0001000100010001LL;
52
static const int32_t fdct_r_row[2] ATTR_ALIGN(8) = {RND_FRW_ROW, RND_FRW_ROW };
56
const int32_t fdct_r_row_sse2[4] ATTR_ALIGN(16);
57
} fdct_r_row_sse2 ATTR_ALIGN(16)=
59
RND_FRW_ROW, RND_FRW_ROW, RND_FRW_ROW, RND_FRW_ROW
61
//static const long fdct_r_row_sse2[4] ATTR_ALIGN(16) = {RND_FRW_ROW, RND_FRW_ROW, RND_FRW_ROW, RND_FRW_ROW};
63
static const int16_t tab_frw_01234567[] ATTR_ALIGN(8) = { // forward_dct coeff table
64
16384, 16384, 22725, 19266,
65
16384, 16384, 12873, 4520,
66
21407, 8867, 19266, -4520,
67
-8867, -21407, -22725, -12873,
68
16384, -16384, 12873, -22725,
69
-16384, 16384, 4520, 19266,
70
8867, -21407, 4520, -12873,
71
21407, -8867, 19266, -22725,
73
22725, 22725, 31521, 26722,
74
22725, 22725, 17855, 6270,
75
29692, 12299, 26722, -6270,
76
-12299, -29692, -31521, -17855,
77
22725, -22725, 17855, -31521,
78
-22725, 22725, 6270, 26722,
79
12299, -29692, 6270, -17855,
80
29692, -12299, 26722, -31521,
82
21407, 21407, 29692, 25172,
83
21407, 21407, 16819, 5906,
84
27969, 11585, 25172, -5906,
85
-11585, -27969, -29692, -16819,
86
21407, -21407, 16819, -29692,
87
-21407, 21407, 5906, 25172,
88
11585, -27969, 5906, -16819,
89
27969, -11585, 25172, -29692,
91
19266, 19266, 26722, 22654,
92
19266, 19266, 15137, 5315,
93
25172, 10426, 22654, -5315,
94
-10426, -25172, -26722, -15137,
95
19266, -19266, 15137, -26722,
96
-19266, 19266, 5315, 22654,
97
10426, -25172, 5315, -15137,
98
25172, -10426, 22654, -26722,
100
16384, 16384, 22725, 19266,
101
16384, 16384, 12873, 4520,
102
21407, 8867, 19266, -4520,
103
-8867, -21407, -22725, -12873,
104
16384, -16384, 12873, -22725,
105
-16384, 16384, 4520, 19266,
106
8867, -21407, 4520, -12873,
107
21407, -8867, 19266, -22725,
109
19266, 19266, 26722, 22654,
110
19266, 19266, 15137, 5315,
111
25172, 10426, 22654, -5315,
112
-10426, -25172, -26722, -15137,
113
19266, -19266, 15137, -26722,
114
-19266, 19266, 5315, 22654,
115
10426, -25172, 5315, -15137,
116
25172, -10426, 22654, -26722,
118
21407, 21407, 29692, 25172,
119
21407, 21407, 16819, 5906,
120
27969, 11585, 25172, -5906,
121
-11585, -27969, -29692, -16819,
122
21407, -21407, 16819, -29692,
123
-21407, 21407, 5906, 25172,
124
11585, -27969, 5906, -16819,
125
27969, -11585, 25172, -29692,
127
22725, 22725, 31521, 26722,
128
22725, 22725, 17855, 6270,
129
29692, 12299, 26722, -6270,
130
-12299, -29692, -31521, -17855,
131
22725, -22725, 17855, -31521,
132
-22725, 22725, 6270, 26722,
133
12299, -29692, 6270, -17855,
134
29692, -12299, 26722, -31521,
139
const int16_t tab_frw_01234567_sse2[256] ATTR_ALIGN(16);
140
} tab_frw_01234567_sse2 ATTR_ALIGN(16) =
142
//static const int16_t tab_frw_01234567_sse2[] ATTR_ALIGN(16) = { // forward_dct coeff table
143
#define TABLE_SSE2 C4, C4, C1, C3, -C6, -C2, -C1, -C5, \
144
C4, C4, C5, C7, C2, C6, C3, -C7, \
145
-C4, C4, C7, C3, C6, -C2, C7, -C5, \
146
C4, -C4, C5, -C1, C2, -C6, C3, -C1,
147
// c1..c7 * cos(pi/4) * 2^15
271
static always_inline void fdct_col(const int16_t *in, int16_t *out, int offset)
273
movq_m2r(*(in + offset + 1 * 8), mm0);
274
movq_m2r(*(in + offset + 6 * 8), mm1);
276
movq_m2r(*(in + offset + 2 * 8), mm3);
277
paddsw_r2r(mm1, mm0);
278
movq_m2r(*(in + offset + 5 * 8), mm4);
279
psllw_i2r(SHIFT_FRW_COL, mm0);
280
movq_m2r(*(in + offset + 0 * 8), mm5);
281
paddsw_r2r(mm3, mm4);
282
paddsw_m2r(*(in + offset + 7 * 8), mm5);
283
psllw_i2r(SHIFT_FRW_COL, mm4);
285
psubsw_r2r(mm1, mm2);
286
movq_m2r(*(fdct_tg_all_16 + 4), mm1);
287
psubsw_r2r(mm4, mm0);
288
movq_m2r(*(in + offset + 3 * 8), mm7);
289
pmulhw_r2r(mm0, mm1);
290
paddsw_m2r(*(in + offset + 4 * 8), mm7);
291
psllw_i2r(SHIFT_FRW_COL, mm5);
292
paddsw_r2r(mm4, mm6);
293
psllw_i2r(SHIFT_FRW_COL, mm7);
295
psubsw_r2r(mm7, mm5);
296
paddsw_r2r(mm5, mm1);
297
paddsw_r2r(mm7, mm4);
298
por_m2r(fdct_one_corr, mm1);
299
psllw_i2r(SHIFT_FRW_COL + 1, mm2);
300
pmulhw_m2r(*(fdct_tg_all_16 + 4), mm5);
302
psubsw_m2r(*(in + offset + 5 * 8), mm3);
303
psubsw_r2r(mm6, mm4);
304
movq_r2m(mm1, *(out + offset + 2 * 8));
305
paddsw_r2r(mm6, mm7);
306
movq_m2r(*(in + offset + 3 * 8), mm1);
307
psllw_i2r(SHIFT_FRW_COL + 1, mm3);
308
psubsw_m2r(*(in + offset + 4 * 8), mm1);
310
movq_r2m(mm4, *(out + offset + 4 * 8));
311
paddsw_r2r(mm3, mm2);
312
pmulhw_m2r(*ocos_4_16, mm2);
313
psubsw_r2r(mm3, mm6);
314
pmulhw_m2r(*ocos_4_16, mm6);
315
psubsw_r2r(mm0, mm5);
316
por_m2r(fdct_one_corr, mm5);
317
psllw_i2r(SHIFT_FRW_COL, mm1);
318
por_m2r(fdct_one_corr, mm2);
320
movq_m2r(*(in + offset + 0 * 8), mm3);
321
paddsw_r2r(mm6, mm1);
322
psubsw_m2r(*(in + offset + 7 * 8), mm3);
323
psubsw_r2r(mm6, mm4);
324
movq_m2r(*(fdct_tg_all_16 + 0), mm0);
325
psllw_i2r(SHIFT_FRW_COL, mm3);
326
movq_m2r(*(fdct_tg_all_16 + 8), mm6);
327
pmulhw_r2r(mm1, mm0);
328
movq_r2m(mm7, *(out + offset + 0 * 8));
329
pmulhw_r2r(mm4, mm6);
330
movq_r2m(mm5, *(out + offset + 6 * 8));
332
movq_m2r(*(fdct_tg_all_16 + 8), mm5);
333
psubsw_r2r(mm2, mm7);
334
paddsw_r2r(mm2, mm3);
335
pmulhw_r2r(mm7, mm5);
336
paddsw_r2r(mm3, mm0);
337
paddsw_r2r(mm4, mm6);
338
pmulhw_m2r(*(fdct_tg_all_16 + 0), mm3);
339
por_m2r(fdct_one_corr, mm0);
340
paddsw_r2r(mm7, mm5);
341
psubsw_r2r(mm6, mm7);
342
movq_r2m(mm0, *(out + offset + 1 * 8));
343
paddsw_r2r(mm4, mm5);
344
movq_r2m(mm7, *(out + offset + 3 * 8));
345
psubsw_r2r(mm1, mm3);
346
movq_r2m(mm5, *(out + offset + 5 * 8));
347
movq_r2m(mm3, *(out + offset + 7 * 8));
351
static always_inline void fdct_row_sse2(const int16_t *in, int16_t *out)
354
".macro FDCT_ROW_SSE2_H1 i t \n\t"
355
"movq \\i(%0), %%xmm2 \n\t"
356
"movq \\i+8(%0), %%xmm0 \n\t"
357
"movdqa \\t+32(%1), %%xmm3 \n\t"
358
"movdqa \\t+48(%1), %%xmm7 \n\t"
359
"movdqa \\t(%1), %%xmm4 \n\t"
360
"movdqa \\t+16(%1), %%xmm5 \n\t"
362
".macro FDCT_ROW_SSE2_H2 i t \n\t"
363
"movq \\i(%0), %%xmm2 \n\t"
364
"movq \\i+8(%0), %%xmm0 \n\t"
365
"movdqa \\t+32(%1), %%xmm3 \n\t"
366
"movdqa \\t+48(%1), %%xmm7 \n\t"
368
".macro FDCT_ROW_SSE2 i \n\t"
369
"movq %%xmm2, %%xmm1 \n\t"
370
"pshuflw $27, %%xmm0, %%xmm0 \n\t"
371
"paddsw %%xmm0, %%xmm1 \n\t"
372
"psubsw %%xmm0, %%xmm2 \n\t"
373
"punpckldq %%xmm2, %%xmm1 \n\t"
374
"pshufd $78, %%xmm1, %%xmm2 \n\t"
375
"pmaddwd %%xmm2, %%xmm3 \n\t"
376
"pmaddwd %%xmm1, %%xmm7 \n\t"
377
"pmaddwd %%xmm5, %%xmm2 \n\t"
378
"pmaddwd %%xmm4, %%xmm1 \n\t"
379
"paddd %%xmm7, %%xmm3 \n\t"
380
"paddd %%xmm2, %%xmm1 \n\t"
381
"paddd %%xmm6, %%xmm3 \n\t"
382
"paddd %%xmm6, %%xmm1 \n\t"
383
"psrad %3, %%xmm3 \n\t"
384
"psrad %3, %%xmm1 \n\t"
385
"packssdw %%xmm3, %%xmm1 \n\t"
386
"movdqa %%xmm1, \\i(%4) \n\t"
388
"movdqa (%2), %%xmm6 \n\t"
389
"FDCT_ROW_SSE2_H1 0 0 \n\t"
390
"FDCT_ROW_SSE2 0 \n\t"
391
"FDCT_ROW_SSE2_H2 64 0 \n\t"
392
"FDCT_ROW_SSE2 64 \n\t"
394
"FDCT_ROW_SSE2_H1 16 64 \n\t"
395
"FDCT_ROW_SSE2 16 \n\t"
396
"FDCT_ROW_SSE2_H2 112 64 \n\t"
397
"FDCT_ROW_SSE2 112 \n\t"
399
"FDCT_ROW_SSE2_H1 32 128 \n\t"
400
"FDCT_ROW_SSE2 32 \n\t"
401
"FDCT_ROW_SSE2_H2 96 128 \n\t"
402
"FDCT_ROW_SSE2 96 \n\t"
404
"FDCT_ROW_SSE2_H1 48 192 \n\t"
405
"FDCT_ROW_SSE2 48 \n\t"
406
"FDCT_ROW_SSE2_H2 80 192 \n\t"
407
"FDCT_ROW_SSE2 80 \n\t"
409
: "r" (in), "r" (tab_frw_01234567_sse2.tab_frw_01234567_sse2), "r" (fdct_r_row_sse2.fdct_r_row_sse2), "i" (SHIFT_FRW_ROW), "r" (out)
413
static always_inline void fdct_row_mmx2(const int16_t *in, int16_t *out, const int16_t *table)
415
pshufw_m2r(*(in + 4), mm5, 0x1B);
416
movq_m2r(*(in + 0), mm0);
418
paddsw_r2r(mm5, mm0);
419
psubsw_r2r(mm5, mm1);
421
punpckldq_r2r(mm1, mm0);
422
punpckhdq_r2r(mm1, mm2);
423
movq_m2r(*(table + 0), mm1);
424
movq_m2r(*(table + 4), mm3);
425
movq_m2r(*(table + 8), mm4);
426
movq_m2r(*(table + 12), mm5);
427
movq_m2r(*(table + 16), mm6);
428
movq_m2r(*(table + 20), mm7);
429
pmaddwd_r2r(mm0, mm1);
430
pmaddwd_r2r(mm2, mm3);
431
pmaddwd_r2r(mm0, mm4);
432
pmaddwd_r2r(mm2, mm5);
433
pmaddwd_r2r(mm0, mm6);
434
pmaddwd_r2r(mm2, mm7);
435
pmaddwd_m2r(*(table + 24), mm0);
436
pmaddwd_m2r(*(table + 28), mm2);
441
movq_m2r(*fdct_r_row, mm0);
446
psrad_i2r(SHIFT_FRW_ROW, mm3);
447
psrad_i2r(SHIFT_FRW_ROW, mm5);
448
psrad_i2r(SHIFT_FRW_ROW, mm7);
449
psrad_i2r(SHIFT_FRW_ROW, mm2);
450
packssdw_r2r(mm5, mm3);
451
packssdw_r2r(mm2, mm7);
452
movq_r2m(mm3, *(out + 0));
453
movq_r2m(mm7, *(out + 4));
456
static always_inline void fdct_row_mmx(const int16_t *in, int16_t *out, const int16_t *table)
458
//FIXME reorder (i dont have a old mmx only cpu here to benchmark ...)
459
movd_m2r(*(in + 6), mm1);
460
punpcklwd_m2r(*(in + 4), mm1);
462
psrlq_i2r(0x20, mm1);
463
movq_m2r(*(in + 0), mm0);
464
punpcklwd_r2r(mm2, mm1);
466
paddsw_r2r(mm1, mm0);
467
psubsw_r2r(mm1, mm5);
469
punpckldq_r2r(mm5, mm0);
470
punpckhdq_r2r(mm5, mm2);
471
movq_m2r(*(table + 0), mm1);
472
movq_m2r(*(table + 4), mm3);
473
movq_m2r(*(table + 8), mm4);
474
movq_m2r(*(table + 12), mm5);
475
movq_m2r(*(table + 16), mm6);
476
movq_m2r(*(table + 20), mm7);
477
pmaddwd_r2r(mm0, mm1);
478
pmaddwd_r2r(mm2, mm3);
479
pmaddwd_r2r(mm0, mm4);
480
pmaddwd_r2r(mm2, mm5);
481
pmaddwd_r2r(mm0, mm6);
482
pmaddwd_r2r(mm2, mm7);
483
pmaddwd_m2r(*(table + 24), mm0);
484
pmaddwd_m2r(*(table + 28), mm2);
489
movq_m2r(*fdct_r_row, mm0);
494
psrad_i2r(SHIFT_FRW_ROW, mm3);
495
psrad_i2r(SHIFT_FRW_ROW, mm5);
496
psrad_i2r(SHIFT_FRW_ROW, mm7);
497
psrad_i2r(SHIFT_FRW_ROW, mm2);
498
packssdw_r2r(mm5, mm3);
499
packssdw_r2r(mm2, mm7);
500
movq_r2m(mm3, *(out + 0));
501
movq_r2m(mm7, *(out + 4));
504
void ff_fdct_mmx(int16_t *block)
506
int64_t align_tmp[16] ATTR_ALIGN(8);
507
int16_t * const block_tmp= (int16_t*)align_tmp;
508
int16_t *block1, *out;
509
const int16_t *table;
513
fdct_col(block, block1, 0);
514
fdct_col(block, block1, 4);
517
table = tab_frw_01234567;
520
fdct_row_mmx(block1, out, table);
527
void ff_fdct_mmx2(int16_t *block)
529
int64_t align_tmp[16] ATTR_ALIGN(8);
530
int16_t * const block_tmp= (int16_t*)align_tmp;
531
int16_t *block1, *out;
532
const int16_t *table;
536
fdct_col(block, block1, 0);
537
fdct_col(block, block1, 4);
540
table = tab_frw_01234567;
543
fdct_row_mmx2(block1, out, table);
550
void ff_fdct_sse2(int16_t *block)
552
int64_t align_tmp[16] ATTR_ALIGN(8);
553
int16_t * const block_tmp= (int16_t*)align_tmp;
557
fdct_col(block, block1, 0);
558
fdct_col(block, block1, 4);
560
fdct_row_sse2(block1, block);
added
removed
avidemux/ADM_lavcodec/i386/fdct_mmx.c
