aboutsummaryrefslogtreecommitdiffstats
path: root/libswscale/x86/input.asm
blob: 66d88458bb0f1c485c56c02f47060a1ec52874da (plain) (blame)
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
666
667
668
669
;******************************************************************************
;* x86-optimized input routines; does shuffling of packed
;* YUV formats into individual planes, and converts RGB
;* into YUV planes also.
;* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
;*
;* 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 "x86inc.asm"
%include "x86util.asm"

SECTION_RODATA

%define RY 0x20DE
%define GY 0x4087
%define BY 0x0C88
%define RU 0xECFF
%define GU 0xDAC8
%define BU 0x3838
%define RV 0x3838
%define GV 0xD0E3
%define BV 0xF6E4

rgb_Yrnd:        times 4 dd 0x84000        ;  16.5 << 15
rgb_UVrnd:       times 4 dd 0x404000       ; 128.5 << 15
bgr_Ycoeff_12x4: times 2 dw BY, GY, 0, BY
bgr_Ycoeff_3x56: times 2 dw RY, 0, GY, RY
rgb_Ycoeff_12x4: times 2 dw RY, GY, 0, RY
rgb_Ycoeff_3x56: times 2 dw BY, 0, GY, BY
bgr_Ucoeff_12x4: times 2 dw BU, GU, 0, BU
bgr_Ucoeff_3x56: times 2 dw RU, 0, GU, RU
rgb_Ucoeff_12x4: times 2 dw RU, GU, 0, RU
rgb_Ucoeff_3x56: times 2 dw BU, 0, GU, BU
bgr_Vcoeff_12x4: times 2 dw BV, GV, 0, BV
bgr_Vcoeff_3x56: times 2 dw RV, 0, GV, RV
rgb_Vcoeff_12x4: times 2 dw RV, GV, 0, RV
rgb_Vcoeff_3x56: times 2 dw BV, 0, GV, BV

rgba_Ycoeff_rb:  times 4 dw RY, BY
rgba_Ycoeff_br:  times 4 dw BY, RY
rgba_Ycoeff_ga:  times 4 dw GY, 0
rgba_Ycoeff_ag:  times 4 dw 0,  GY
rgba_Ucoeff_rb:  times 4 dw RU, BU
rgba_Ucoeff_br:  times 4 dw BU, RU
rgba_Ucoeff_ga:  times 4 dw GU, 0
rgba_Ucoeff_ag:  times 4 dw 0,  GU
rgba_Vcoeff_rb:  times 4 dw RV, BV
rgba_Vcoeff_br:  times 4 dw BV, RV
rgba_Vcoeff_ga:  times 4 dw GV, 0
rgba_Vcoeff_ag:  times 4 dw 0,  GV

shuf_rgb_12x4:   db 0, 0x80, 1, 0x80,  2, 0x80,  3, 0x80, \
                    6, 0x80, 7, 0x80,  8, 0x80,  9, 0x80
shuf_rgb_3x56:   db 2, 0x80, 3, 0x80,  4, 0x80,  5, 0x80, \
                    8, 0x80, 9, 0x80, 10, 0x80, 11, 0x80

SECTION .text

;-----------------------------------------------------------------------------
; RGB to Y/UV.
;
; void <fmt>ToY_<opt>(uint8_t *dst, const uint8_t *src, int w);
; and
; void <fmt>toUV_<opt>(uint8_t *dstU, uint8_t *dstV, const uint8_t *src,
;                      const uint8_t *unused, int w);
;-----------------------------------------------------------------------------

; %1 = nr. of XMM registers
; %2 = rgb or bgr
%macro RGB24_TO_Y_FN 2-3
cglobal %2 %+ 24ToY, 3, 3, %1, dst, src, w
%if mmsize == 8
    mova           m5, [%2_Ycoeff_12x4]
    mova           m6, [%2_Ycoeff_3x56]
%define coeff1 m5
%define coeff2 m6
%elif ARCH_X86_64
    mova           m8, [%2_Ycoeff_12x4]
    mova           m9, [%2_Ycoeff_3x56]
%define coeff1 m8
%define coeff2 m9
%else ; x86-32 && mmsize == 16
%define coeff1 [%2_Ycoeff_12x4]
%define coeff2 [%2_Ycoeff_3x56]
%endif ; x86-32/64 && mmsize == 8/16
%if (ARCH_X86_64 || mmsize == 8) && %0 == 3
    jmp mangle(program_name %+ _ %+ %3 %+ 24ToY %+ SUFFIX).body
%else ; (ARCH_X86_64 && %0 == 3) || mmsize == 8
.body:
%if cpuflag(ssse3)
    mova           m7, [shuf_rgb_12x4]
%define shuf_rgb1 m7
%if ARCH_X86_64
    mova          m10, [shuf_rgb_3x56]
%define shuf_rgb2 m10
%else ; x86-32
%define shuf_rgb2 [shuf_rgb_3x56]
%endif ; x86-32/64
%endif ; cpuflag(ssse3)
%if ARCH_X86_64
    movsxd         wq, wd
%endif
    add          dstq, wq
    neg            wq
%if notcpuflag(ssse3)
    pxor           m7, m7
%endif ; !cpuflag(ssse3)
    mova           m4, [rgb_Yrnd]
.loop:
%if cpuflag(ssse3)
    movu           m0, [srcq+0]           ; (byte) { Bx, Gx, Rx }[0-3]
    movu           m2, [srcq+12]          ; (byte) { Bx, Gx, Rx }[4-7]
    pshufb         m1, m0, shuf_rgb2      ; (word) { R0, B1, G1, R1, R2, B3, G3, R3 }
    pshufb         m0, shuf_rgb1          ; (word) { B0, G0, R0, B1, B2, G2, R2, B3 }
    pshufb         m3, m2, shuf_rgb2      ; (word) { R4, B5, G5, R5, R6, B7, G7, R7 }
    pshufb         m2, shuf_rgb1          ; (word) { B4, G4, R4, B5, B6, G6, R6, B7 }
%else ; !cpuflag(ssse3)
    movd           m0, [srcq+0]           ; (byte) { B0, G0, R0, B1 }
    movd           m1, [srcq+2]           ; (byte) { R0, B1, G1, R1 }
    movd           m2, [srcq+6]           ; (byte) { B2, G2, R2, B3 }
    movd           m3, [srcq+8]           ; (byte) { R2, B3, G3, R3 }
%if mmsize == 16 ; i.e. sse2
    punpckldq      m0, m2                 ; (byte) { B0, G0, R0, B1, B2, G2, R2, B3 }
    punpckldq      m1, m3                 ; (byte) { R0, B1, G1, R1, R2, B3, G3, R3 }
    movd           m2, [srcq+12]          ; (byte) { B4, G4, R4, B5 }
    movd           m3, [srcq+14]          ; (byte) { R4, B5, G5, R5 }
    movd           m5, [srcq+18]          ; (byte) { B6, G6, R6, B7 }
    movd           m6, [srcq+20]          ; (byte) { R6, B7, G7, R7 }
    punpckldq      m2, m5                 ; (byte) { B4, G4, R4, B5, B6, G6, R6, B7 }
    punpckldq      m3, m6                 ; (byte) { R4, B5, G5, R5, R6, B7, G7, R7 }
%endif ; mmsize == 16
    punpcklbw      m0, m7                 ; (word) { B0, G0, R0, B1, B2, G2, R2, B3 }
    punpcklbw      m1, m7                 ; (word) { R0, B1, G1, R1, R2, B3, G3, R3 }
    punpcklbw      m2, m7                 ; (word) { B4, G4, R4, B5, B6, G6, R6, B7 }
    punpcklbw      m3, m7                 ; (word) { R4, B5, G5, R5, R6, B7, G7, R7 }
%endif ; cpuflag(ssse3)
    add          srcq, 3 * mmsize / 2
    pmaddwd        m0, coeff1             ; (dword) { B0*BY + G0*GY, B1*BY, B2*BY + G2*GY, B3*BY }
    pmaddwd        m1, coeff2             ; (dword) { R0*RY, G1+GY + R1*RY, R2*RY, G3+GY + R3*RY }
    pmaddwd        m2, coeff1             ; (dword) { B4*BY + G4*GY, B5*BY, B6*BY + G6*GY, B7*BY }
    pmaddwd        m3, coeff2             ; (dword) { R4*RY, G5+GY + R5*RY, R6*RY, G7+GY + R7*RY }
    paddd          m0, m1                 ; (dword) { Bx*BY + Gx*GY + Rx*RY }[0-3]
    paddd          m2, m3                 ; (dword) { Bx*BY + Gx*GY + Rx*RY }[4-7]
    paddd          m0, m4                 ; += rgb_Yrnd, i.e. (dword) { Y[0-3] }
    paddd          m2, m4                 ; += rgb_Yrnd, i.e. (dword) { Y[4-7] }
    psrad          m0, 15
    psrad          m2, 15
    packssdw       m0, m2                 ; (word) { Y[0-7] }
    packuswb       m0, m0                 ; (byte) { Y[0-7] }
    movh    [dstq+wq], m0
    add            wq, mmsize / 2
    jl .loop
    REP_RET
%endif ; (ARCH_X86_64 && %0 == 3) || mmsize == 8
%endmacro

; %1 = nr. of XMM registers
; %2 = rgb or bgr
%macro RGB24_TO_UV_FN 2-3
cglobal %2 %+ 24ToUV, 3, 4, %1, dstU, dstV, src, w
%if ARCH_X86_64
    mova           m8, [%2_Ucoeff_12x4]
    mova           m9, [%2_Ucoeff_3x56]
    mova          m10, [%2_Vcoeff_12x4]
    mova          m11, [%2_Vcoeff_3x56]
%define coeffU1 m8
%define coeffU2 m9
%define coeffV1 m10
%define coeffV2 m11
%else ; x86-32
%define coeffU1 [%2_Ucoeff_12x4]
%define coeffU2 [%2_Ucoeff_3x56]
%define coeffV1 [%2_Vcoeff_12x4]
%define coeffV2 [%2_Vcoeff_3x56]
%endif ; x86-32/64
%if ARCH_X86_64 && %0 == 3
    jmp mangle(program_name %+ _ %+ %3 %+ 24ToUV %+ SUFFIX).body
%else ; ARCH_X86_64 && %0 == 3
.body:
%if cpuflag(ssse3)
    mova           m7, [shuf_rgb_12x4]
%define shuf_rgb1 m7
%if ARCH_X86_64
    mova          m12, [shuf_rgb_3x56]
%define shuf_rgb2 m12
%else ; x86-32
%define shuf_rgb2 [shuf_rgb_3x56]
%endif ; x86-32/64
%endif ; cpuflag(ssse3)
%if ARCH_X86_64
    movsxd         wq, dword r4m
%else ; x86-32
    mov            wq, r4m
%endif
    add         dstUq, wq
    add         dstVq, wq
    neg            wq
    mova           m6, [rgb_UVrnd]
%if notcpuflag(ssse3)
    pxor           m7, m7
%endif
.loop:
%if cpuflag(ssse3)
    movu           m0, [srcq+0]           ; (byte) { Bx, Gx, Rx }[0-3]
    movu           m4, [srcq+12]          ; (byte) { Bx, Gx, Rx }[4-7]
    pshufb         m1, m0, shuf_rgb2      ; (word) { R0, B1, G1, R1, R2, B3, G3, R3 }
    pshufb         m0, shuf_rgb1          ; (word) { B0, G0, R0, B1, B2, G2, R2, B3 }
%else ; !cpuflag(ssse3)
    movd           m0, [srcq+0]           ; (byte) { B0, G0, R0, B1 }
    movd           m1, [srcq+2]           ; (byte) { R0, B1, G1, R1 }
    movd           m4, [srcq+6]           ; (byte) { B2, G2, R2, B3 }
    movd           m5, [srcq+8]           ; (byte) { R2, B3, G3, R3 }
%if mmsize == 16
    punpckldq      m0, m4                 ; (byte) { B0, G0, R0, B1, B2, G2, R2, B3 }
    punpckldq      m1, m5                 ; (byte) { R0, B1, G1, R1, R2, B3, G3, R3 }
    movd           m4, [srcq+12]          ; (byte) { B4, G4, R4, B5 }
    movd           m5, [srcq+14]          ; (byte) { R4, B5, G5, R5 }
%endif ; mmsize == 16
    punpcklbw      m0, m7                 ; (word) { B0, G0, R0, B1, B2, G2, R2, B3 }
    punpcklbw      m1, m7                 ; (word) { R0, B1, G1, R1, R2, B3, G3, R3 }
%endif ; cpuflag(ssse3)
    pmaddwd        m2, m0, coeffV1        ; (dword) { B0*BV + G0*GV, B1*BV, B2*BV + G2*GV, B3*BV }
    pmaddwd        m3, m1, coeffV2        ; (dword) { R0*BV, G1*GV + R1*BV, R2*BV, G3*GV + R3*BV }
    pmaddwd        m0, coeffU1            ; (dword) { B0*BU + G0*GU, B1*BU, B2*BU + G2*GU, B3*BU }
    pmaddwd        m1, coeffU2            ; (dword) { R0*BU, G1*GU + R1*BU, R2*BU, G3*GU + R3*BU }
    paddd          m0, m1                 ; (dword) { Bx*BU + Gx*GU + Rx*RU }[0-3]
    paddd          m2, m3                 ; (dword) { Bx*BV + Gx*GV + Rx*RV }[0-3]
%if cpuflag(ssse3)
    pshufb         m5, m4, shuf_rgb2      ; (word) { R4, B5, G5, R5, R6, B7, G7, R7 }
    pshufb         m4, shuf_rgb1          ; (word) { B4, G4, R4, B5, B6, G6, R6, B7 }
%else ; !cpuflag(ssse3)
%if mmsize == 16
    movd           m1, [srcq+18]          ; (byte) { B6, G6, R6, B7 }
    movd           m3, [srcq+20]          ; (byte) { R6, B7, G7, R7 }
    punpckldq      m4, m1                 ; (byte) { B4, G4, R4, B5, B6, G6, R6, B7 }
    punpckldq      m5, m3                 ; (byte) { R4, B5, G5, R5, R6, B7, G7, R7 }
%endif ; mmsize == 16 && !cpuflag(ssse3)
    punpcklbw      m4, m7                 ; (word) { B4, G4, R4, B5, B6, G6, R6, B7 }
    punpcklbw      m5, m7                 ; (word) { R4, B5, G5, R5, R6, B7, G7, R7 }
%endif ; cpuflag(ssse3)
    add          srcq, 3 * mmsize / 2
    pmaddwd        m1, m4, coeffU1        ; (dword) { B4*BU + G4*GU, B5*BU, B6*BU + G6*GU, B7*BU }
    pmaddwd        m3, m5, coeffU2        ; (dword) { R4*BU, G5*GU + R5*BU, R6*BU, G7*GU + R7*BU }
    pmaddwd        m4, coeffV1            ; (dword) { B4*BV + G4*GV, B5*BV, B6*BV + G6*GV, B7*BV }
    pmaddwd        m5, coeffV2            ; (dword) { R4*BV, G5*GV + R5*BV, R6*BV, G7*GV + R7*BV }
    paddd          m1, m3                 ; (dword) { Bx*BU + Gx*GU + Rx*RU }[4-7]
    paddd          m4, m5                 ; (dword) { Bx*BV + Gx*GV + Rx*RV }[4-7]
    paddd          m0, m6                 ; += rgb_UVrnd, i.e. (dword) { U[0-3] }
    paddd          m2, m6                 ; += rgb_UVrnd, i.e. (dword) { V[0-3] }
    paddd          m1, m6                 ; += rgb_UVrnd, i.e. (dword) { U[4-7] }
    paddd          m4, m6                 ; += rgb_UVrnd, i.e. (dword) { V[4-7] }
    psrad          m0, 15
    psrad          m2, 15
    psrad          m1, 15
    psrad          m4, 15
    packssdw       m0, m1                 ; (word) { U[0-7] }
    packssdw       m2, m4                 ; (word) { V[0-7] }
%if mmsize == 8
    packuswb       m0, m0                 ; (byte) { U[0-3] }
    packuswb       m2, m2                 ; (byte) { V[0-3] }
    movh   [dstUq+wq], m0
    movh   [dstVq+wq], m2
%else ; mmsize == 16
    packuswb       m0, m2                 ; (byte) { U[0-7], V[0-7] }
    movh   [dstUq+wq], m0
    movhps [dstVq+wq], m0
%endif ; mmsize == 8/16
    add            wq, mmsize / 2
    jl .loop
    REP_RET
%endif ; ARCH_X86_64 && %0 == 3
%endmacro

; %1 = nr. of XMM registers for rgb-to-Y func
; %2 = nr. of XMM registers for rgb-to-UV func
%macro RGB24_FUNCS 2
RGB24_TO_Y_FN %1, rgb
RGB24_TO_Y_FN %1, bgr, rgb
RGB24_TO_UV_FN %2, rgb
RGB24_TO_UV_FN %2, bgr, rgb
%endmacro

%if ARCH_X86_32
INIT_MMX mmx
RGB24_FUNCS 0, 0
%endif

INIT_XMM sse2
RGB24_FUNCS 10, 12

INIT_XMM ssse3
RGB24_FUNCS 11, 13

INIT_XMM avx
RGB24_FUNCS 11, 13

; %1 = nr. of XMM registers
; %2-5 = rgba, bgra, argb or abgr (in individual characters)
%macro RGB32_TO_Y_FN 5-6
cglobal %2%3%4%5 %+ ToY, 3, 3, %1, dst, src, w
    mova           m5, [rgba_Ycoeff_%2%4]
    mova           m6, [rgba_Ycoeff_%3%5]
%if %0 == 6
    jmp mangle(program_name %+ _ %+ %6 %+ ToY %+ SUFFIX).body
%else ; %0 == 6
.body:
%if ARCH_X86_64
    movsxd         wq, wd
%endif
    lea          srcq, [srcq+wq*4]
    add          dstq, wq
    neg            wq
    mova           m4, [rgb_Yrnd]
    pcmpeqb        m7, m7
    psrlw          m7, 8                  ; (word) { 0x00ff } x4
.loop:
    ; FIXME check alignment and use mova
    movu           m0, [srcq+wq*4+0]      ; (byte) { Bx, Gx, Rx, xx }[0-3]
    movu           m2, [srcq+wq*4+mmsize] ; (byte) { Bx, Gx, Rx, xx }[4-7]
    DEINTB          1,  0,  3,  2,  7     ; (word) { Gx, xx (m0/m2) or Bx, Rx (m1/m3) }[0-3]/[4-7]
    pmaddwd        m1, m5                 ; (dword) { Bx*BY + Rx*RY }[0-3]
    pmaddwd        m0, m6                 ; (dword) { Gx*GY }[0-3]
    pmaddwd        m3, m5                 ; (dword) { Bx*BY + Rx*RY }[4-7]
    pmaddwd        m2, m6                 ; (dword) { Gx*GY }[4-7]
    paddd          m0, m4                 ; += rgb_Yrnd
    paddd          m2, m4                 ; += rgb_Yrnd
    paddd          m0, m1                 ; (dword) { Y[0-3] }
    paddd          m2, m3                 ; (dword) { Y[4-7] }
    psrad          m0, 15
    psrad          m2, 15
    packssdw       m0, m2                 ; (word) { Y[0-7] }
    packuswb       m0, m0                 ; (byte) { Y[0-7] }
    movh    [dstq+wq], m0
    add            wq, mmsize / 2
    jl .loop
    REP_RET
%endif ; %0 == 3
%endmacro

; %1 = nr. of XMM registers
; %2-5 = rgba, bgra, argb or abgr (in individual characters)
%macro RGB32_TO_UV_FN 5-6
cglobal %2%3%4%5 %+ ToUV, 3, 4, %1, dstU, dstV, src, w
%if ARCH_X86_64
    mova           m8, [rgba_Ucoeff_%2%4]
    mova           m9, [rgba_Ucoeff_%3%5]
    mova          m10, [rgba_Vcoeff_%2%4]
    mova          m11, [rgba_Vcoeff_%3%5]
%define coeffU1 m8
%define coeffU2 m9
%define coeffV1 m10
%define coeffV2 m11
%else ; x86-32
%define coeffU1 [rgba_Ucoeff_%2%4]
%define coeffU2 [rgba_Ucoeff_%3%5]
%define coeffV1 [rgba_Vcoeff_%2%4]
%define coeffV2 [rgba_Vcoeff_%3%5]
%endif ; x86-64/32
%if ARCH_X86_64 && %0 == 6
    jmp mangle(program_name %+ _ %+ %6 %+ ToUV %+ SUFFIX).body
%else ; ARCH_X86_64 && %0 == 6
.body:
%if ARCH_X86_64
    movsxd         wq, dword r4m
%else ; x86-32
    mov            wq, r4m
%endif
    add         dstUq, wq
    add         dstVq, wq
    lea          srcq, [srcq+wq*4]
    neg            wq
    pcmpeqb        m7, m7
    psrlw          m7, 8                  ; (word) { 0x00ff } x4
    mova           m6, [rgb_UVrnd]
.loop:
    ; FIXME check alignment and use mova
    movu           m0, [srcq+wq*4+0]      ; (byte) { Bx, Gx, Rx, xx }[0-3]
    movu           m4, [srcq+wq*4+mmsize] ; (byte) { Bx, Gx, Rx, xx }[4-7]
    DEINTB          1,  0,  5,  4,  7     ; (word) { Gx, xx (m0/m4) or Bx, Rx (m1/m5) }[0-3]/[4-7]
    pmaddwd        m3, m1, coeffV1        ; (dword) { Bx*BV + Rx*RV }[0-3]
    pmaddwd        m2, m0, coeffV2        ; (dword) { Gx*GV }[0-3]
    pmaddwd        m1, coeffU1            ; (dword) { Bx*BU + Rx*RU }[0-3]
    pmaddwd        m0, coeffU2            ; (dword) { Gx*GU }[0-3]
    paddd          m3, m6                 ; += rgb_UVrnd
    paddd          m1, m6                 ; += rgb_UVrnd
    paddd          m2, m3                 ; (dword) { V[0-3] }
    paddd          m0, m1                 ; (dword) { U[0-3] }
    pmaddwd        m3, m5, coeffV1        ; (dword) { Bx*BV + Rx*RV }[4-7]
    pmaddwd        m1, m4, coeffV2        ; (dword) { Gx*GV }[4-7]
    pmaddwd        m5, coeffU1            ; (dword) { Bx*BU + Rx*RU }[4-7]
    pmaddwd        m4, coeffU2            ; (dword) { Gx*GU }[4-7]
    paddd          m3, m6                 ; += rgb_UVrnd
    paddd          m5, m6                 ; += rgb_UVrnd
    psrad          m0, 15
    paddd          m1, m3                 ; (dword) { V[4-7] }
    paddd          m4, m5                 ; (dword) { U[4-7] }
    psrad          m2, 15
    psrad          m4, 15
    psrad          m1, 15
    packssdw       m0, m4                 ; (word) { U[0-7] }
    packssdw       m2, m1                 ; (word) { V[0-7] }
%if mmsize == 8
    packuswb       m0, m0                 ; (byte) { U[0-7] }
    packuswb       m2, m2                 ; (byte) { V[0-7] }
    movh   [dstUq+wq], m0
    movh   [dstVq+wq], m2
%else ; mmsize == 16
    packuswb       m0, m2                 ; (byte) { U[0-7], V[0-7] }
    movh   [dstUq+wq], m0
    movhps [dstVq+wq], m0
%endif ; mmsize == 8/16
    add            wq, mmsize / 2
    jl .loop
    REP_RET
%endif ; ARCH_X86_64 && %0 == 3
%endmacro

; %1 = nr. of XMM registers for rgb-to-Y func
; %2 = nr. of XMM registers for rgb-to-UV func
%macro RGB32_FUNCS 2
RGB32_TO_Y_FN %1, r, g, b, a
RGB32_TO_Y_FN %1, b, g, r, a, rgba
RGB32_TO_Y_FN %1, a, r, g, b, rgba
RGB32_TO_Y_FN %1, a, b, g, r, rgba

RGB32_TO_UV_FN %2, r, g, b, a
RGB32_TO_UV_FN %2, b, g, r, a, rgba
RGB32_TO_UV_FN %2, a, r, g, b, rgba
RGB32_TO_UV_FN %2, a, b, g, r, rgba
%endmacro

%if ARCH_X86_32
INIT_MMX mmx
RGB32_FUNCS 0, 0
%endif

INIT_XMM sse2
RGB32_FUNCS 8, 12

INIT_XMM avx
RGB32_FUNCS 8, 12

;-----------------------------------------------------------------------------
; YUYV/UYVY/NV12/NV21 packed pixel shuffling.
;
; void <fmt>ToY_<opt>(uint8_t *dst, const uint8_t *src, int w);
; and
; void <fmt>toUV_<opt>(uint8_t *dstU, uint8_t *dstV, const uint8_t *src,
;                      const uint8_t *unused, int w);
;-----------------------------------------------------------------------------

; %1 = a (aligned) or u (unaligned)
; %2 = yuyv or uyvy
%macro LOOP_YUYV_TO_Y 2
.loop_%1:
    mov%1          m0, [srcq+wq*2]        ; (byte) { Y0, U0, Y1, V0, ... }
    mov%1          m1, [srcq+wq*2+mmsize] ; (byte) { Y8, U4, Y9, V4, ... }
%ifidn %2, yuyv
    pand           m0, m2                 ; (word) { Y0, Y1, ..., Y7 }
    pand           m1, m2                 ; (word) { Y8, Y9, ..., Y15 }
%else ; uyvy
    psrlw          m0, 8                  ; (word) { Y0, Y1, ..., Y7 }
    psrlw          m1, 8                  ; (word) { Y8, Y9, ..., Y15 }
%endif ; yuyv/uyvy
    packuswb       m0, m1                 ; (byte) { Y0, ..., Y15 }
    mova    [dstq+wq], m0
    add            wq, mmsize
    jl .loop_%1
    REP_RET
%endmacro

; %1 = nr. of XMM registers
; %2 = yuyv or uyvy
; %3 = if specified, it means that unaligned and aligned code in loop
;      will be the same (i.e. YUYV+AVX), and thus we don't need to
;      split the loop in an aligned and unaligned case
%macro YUYV_TO_Y_FN 2-3
cglobal %2ToY, 3, 3, %1, dst, src, w
%if ARCH_X86_64
    movsxd         wq, wd
%endif
    add          dstq, wq
%if mmsize == 16
    test         srcq, 15
%endif
    lea          srcq, [srcq+wq*2]
%ifidn %2, yuyv
    pcmpeqb        m2, m2                 ; (byte) { 0xff } x 16
    psrlw          m2, 8                  ; (word) { 0x00ff } x 8
%endif ; yuyv
%if mmsize == 16
    jnz .loop_u_start
    neg            wq
    LOOP_YUYV_TO_Y  a, %2
.loop_u_start:
    neg            wq
    LOOP_YUYV_TO_Y  u, %2
%else ; mmsize == 8
    neg            wq
    LOOP_YUYV_TO_Y  a, %2
%endif ; mmsize == 8/16
%endmacro

; %1 = a (aligned) or u (unaligned)
; %2 = yuyv or uyvy
%macro LOOP_YUYV_TO_UV 2
.loop_%1:
%ifidn %2, yuyv
    mov%1          m0, [srcq+wq*4]        ; (byte) { Y0, U0, Y1, V0, ... }
    mov%1          m1, [srcq+wq*4+mmsize] ; (byte) { Y8, U4, Y9, V4, ... }
    psrlw          m0, 8                  ; (word) { U0, V0, ..., U3, V3 }
    psrlw          m1, 8                  ; (word) { U4, V4, ..., U7, V7 }
%else ; uyvy
%if cpuflag(avx)
    vpand          m0, m2, [srcq+wq*4]        ; (word) { U0, V0, ..., U3, V3 }
    vpand          m1, m2, [srcq+wq*4+mmsize] ; (word) { U4, V4, ..., U7, V7 }
%else
    mov%1          m0, [srcq+wq*4]        ; (byte) { Y0, U0, Y1, V0, ... }
    mov%1          m1, [srcq+wq*4+mmsize] ; (byte) { Y8, U4, Y9, V4, ... }
    pand           m0, m2                 ; (word) { U0, V0, ..., U3, V3 }
    pand           m1, m2                 ; (word) { U4, V4, ..., U7, V7 }
%endif
%endif ; yuyv/uyvy
    packuswb       m0, m1                 ; (byte) { U0, V0, ..., U7, V7 }
    pand           m1, m0, m2             ; (word) { U0, U1, ..., U7 }
    psrlw          m0, 8                  ; (word) { V0, V1, ..., V7 }
%if mmsize == 16
    packuswb       m1, m0                 ; (byte) { U0, ... U7, V1, ... V7 }
    movh   [dstUq+wq], m1
    movhps [dstVq+wq], m1
%else ; mmsize == 8
    packuswb       m1, m1                 ; (byte) { U0, ... U3 }
    packuswb       m0, m0                 ; (byte) { V0, ... V3 }
    movh   [dstUq+wq], m1
    movh   [dstVq+wq], m0
%endif ; mmsize == 8/16
    add            wq, mmsize / 2
    jl .loop_%1
    REP_RET
%endmacro

; %1 = nr. of XMM registers
; %2 = yuyv or uyvy
; %3 = if specified, it means that unaligned and aligned code in loop
;      will be the same (i.e. UYVY+AVX), and thus we don't need to
;      split the loop in an aligned and unaligned case
%macro YUYV_TO_UV_FN 2-3
cglobal %2ToUV, 3, 4, %1, dstU, dstV, src, w
%if ARCH_X86_64
    movsxd         wq, dword r4m
%else ; x86-32
    mov            wq, r4m
%endif
    add         dstUq, wq
    add         dstVq, wq
%if mmsize == 16 && %0 == 2
    test         srcq, 15
%endif
    lea          srcq, [srcq+wq*4]
    pcmpeqb        m2, m2                 ; (byte) { 0xff } x 16
    psrlw          m2, 8                  ; (word) { 0x00ff } x 8
    ; NOTE: if uyvy+avx, u/a are identical
%if mmsize == 16 && %0 == 2
    jnz .loop_u_start
    neg            wq
    LOOP_YUYV_TO_UV a, %2
.loop_u_start:
    neg            wq
    LOOP_YUYV_TO_UV u, %2
%else ; mmsize == 8
    neg            wq
    LOOP_YUYV_TO_UV a, %2
%endif ; mmsize == 8/16
%endmacro

; %1 = a (aligned) or u (unaligned)
; %2 = nv12 or nv21
%macro LOOP_NVXX_TO_UV 2
.loop_%1:
    mov%1          m0, [srcq+wq*2]        ; (byte) { U0, V0, U1, V1, ... }
    mov%1          m1, [srcq+wq*2+mmsize] ; (byte) { U8, V8, U9, V9, ... }
    pand           m2, m0, m4             ; (word) { U0, U1, ..., U7 }
    pand           m3, m1, m4             ; (word) { U8, U9, ..., U15 }
    psrlw          m0, 8                  ; (word) { V0, V1, ..., V7 }
    psrlw          m1, 8                  ; (word) { V8, V9, ..., V15 }
    packuswb       m2, m3                 ; (byte) { U0, ..., U15 }
    packuswb       m0, m1                 ; (byte) { V0, ..., V15 }
%ifidn %2, nv12
    mova   [dstUq+wq], m2
    mova   [dstVq+wq], m0
%else ; nv21
    mova   [dstVq+wq], m2
    mova   [dstUq+wq], m0
%endif ; nv12/21
    add            wq, mmsize
    jl .loop_%1
    REP_RET
%endmacro

; %1 = nr. of XMM registers
; %2 = nv12 or nv21
%macro NVXX_TO_UV_FN 2
cglobal %2ToUV, 3, 4, %1, dstU, dstV, src, w
%if ARCH_X86_64
    movsxd         wq, dword r4m
%else ; x86-32
    mov            wq, r4m
%endif
    add         dstUq, wq
    add         dstVq, wq
%if mmsize == 16
    test         srcq, 15
%endif
    lea          srcq, [srcq+wq*2]
    pcmpeqb        m4, m4                 ; (byte) { 0xff } x 16
    psrlw          m4, 8                  ; (word) { 0x00ff } x 8
%if mmsize == 16
    jnz .loop_u_start
    neg            wq
    LOOP_NVXX_TO_UV a, %2
.loop_u_start:
    neg            wq
    LOOP_NVXX_TO_UV u, %2
%else ; mmsize == 8
    neg            wq
    LOOP_NVXX_TO_UV a, %2
%endif ; mmsize == 8/16
%endmacro

%if ARCH_X86_32
INIT_MMX mmx
YUYV_TO_Y_FN  0, yuyv
YUYV_TO_Y_FN  0, uyvy
YUYV_TO_UV_FN 0, yuyv
YUYV_TO_UV_FN 0, uyvy
NVXX_TO_UV_FN 0, nv12
NVXX_TO_UV_FN 0, nv21
%endif

INIT_XMM sse2
YUYV_TO_Y_FN  3, yuyv
YUYV_TO_Y_FN  2, uyvy
YUYV_TO_UV_FN 3, yuyv
YUYV_TO_UV_FN 3, uyvy
NVXX_TO_UV_FN 5, nv12
NVXX_TO_UV_FN 5, nv21

INIT_XMM avx
; in theory, we could write a yuy2-to-y using vpand (i.e. AVX), but
; that's not faster in practice
YUYV_TO_UV_FN 3, yuyv
YUYV_TO_UV_FN 3, uyvy, 1
NVXX_TO_UV_FN 5, nv12
NVXX_TO_UV_FN 5, nv21