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
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
|
@/*****************************************************************************
@*
@* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
@*
@* Licensed under the Apache License, Version 2.0 (the "License");
@* you may not use this file except in compliance with the License.
@* You may obtain a copy of the License at:
@*
@* http://www.apache.org/licenses/LICENSE-2.0
@*
@* Unless required by applicable law or agreed to in writing, software
@* distributed under the License is distributed on an "AS IS" BASIS,
@* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@* See the License for the specific language governing permissions and
@* limitations under the License.
@*
@*****************************************************************************/
@/**
@*******************************************************************************
@* @file
@* ihevc_inter_pred_chroma_horz_neon.s
@*
@* @brief
@* contains function definitions for inter prediction interpolation.
@* functions are coded using neon intrinsics and can be compiled using
@* rvct
@*
@* @author
@* yogeswaran rs / akshaya mukund
@*
@* @par list of functions:
@*
@*
@* @remarks
@* none
@*
@*******************************************************************************
@*/
@/**
@*******************************************************************************
@*
@* @brief
@* chroma interprediction filter to store horizontal 16bit ouput
@*
@* @par description:
@* applies a horizontal filter with coefficients pointed to by 'pi1_coeff'
@* to the elements pointed by 'pu1_src' and writes to the location pointed
@* by 'pu1_dst' no downshifting or clipping is done and the output is used
@* as an input for vertical filtering or weighted prediction
@*
@* @param[in] pu1_src
@* uword8 pointer to the source
@*
@* @param[out] pi2_dst
@* word16 pointer to the destination
@*
@* @param[in] src_strd
@* integer source stride
@*
@* @param[in] dst_strd
@* integer destination stride
@*
@* @param[in] pi1_coeff
@* word8 pointer to the filter coefficients
@*
@* @param[in] ht
@* integer height of the array
@*
@* @param[in] wd
@* integer width of the array
@*
@* @returns
@*
@* @remarks
@* none
@*
@*******************************************************************************
@*/
@void ihevc_inter_pred_chroma_horz_w16out(uword8 *pu1_src,
@ word16 *pi2_dst,
@ word32 src_strd,
@ word32 dst_strd,
@ word8 *pi1_coeff,
@ word32 ht,
@ word32 wd)
@**************variables vs registers*****************************************
@r0 => *pu1_src
@r1 => *pi2_dst
@r2 => src_strd
@r3 => dst_strd
.text
.align 4
.globl ihevc_inter_pred_chroma_horz_w16out_a9q
.type ihevc_inter_pred_chroma_horz_w16out_a9q, %function
ihevc_inter_pred_chroma_horz_w16out_a9q:
stmfd sp!, {r4-r12, r14} @stack stores the values of the arguments
ldr r4,[sp,#40] @loads pi1_coeff
ldr r6,[sp,#44] @loads ht
ldr r10,[sp,#48] @loads wd
vld1.8 {d0},[r4] @coeff = vld1_s8(pi1_coeff)
subs r14,r6,#0 @checks for ht == 0
vabs.s8 d2,d0 @vabs_s8(coeff)
@******* added
mov r11, #2
@******* added ends
ble end_loops
vdup.8 d24,d2[0] @coeffabs_0 = vdup_lane_u8(coeffabs, 0)
sub r12,r0,#2 @pu1_src - 2
vdup.8 d25,d2[1] @coeffabs_1 = vdup_lane_u8(coeffabs, 1)
add r4,r12,r2 @pu1_src_tmp2_8 = pu1_src + src_strd
vdup.8 d26,d2[2] @coeffabs_2 = vdup_lane_u8(coeffabs, 2)
tst r10,#3 @checks wd for multiples of 4
mov r5,r10,lsl #1 @2wd
vdup.8 d27,d2[3] @coeffabs_3 = vdup_lane_u8(coeffabs, 3)
and r7,r14,#1 @added @calculating ht_residue ht_residue = (ht & 1)
sub r14,r14,r7 @added @decrement height by ht_residue(residue value is calculated outside)
bne outer_loop_4 @ this branching happens when the width is 2 or 6
cmp r10,#12
beq skip_16
cmp r10,#8
bge outer_loop_16
skip_16:
tst r6,#3
@******* removal
@mov r11,#8
@******* removal ends
sub r9,r0,#2
beq outer_loop_ht_4 @this branching happens when the height is a a multiple of 4
@ cmp r10,#12
@ beq outer_loop_8
@ cmp r10,#16
@ bge outer_loop_16
b outer_loop_8
outer_loop_16:
add r4,r12,r2
and r0, r12, #31
pld [r12, r2, lsl #1]
vld1.u32 {q0},[r12],r11 @vector load pu1_src
mov r10,r5 @2wd
mul r14,r14,r10
vld1.u32 {q1},[r12],r11 @vector load pu1_src
pld [r4, r2, lsl #1]
mov r9,#10
vld1.u32 {q2},[r12],r11 @vector load pu1_src
rsb r6,r3,#8
sub r8,r3,#8
vld1.u32 {q3},[r12],r9 @vector load pu1_src
vmull.u8 q15,d2,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
vld1.u32 {q4},[r4],r11 @vector load pu1_src
vmlsl.u8 q15,d0,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {q5},[r4],r11 @vector load pu1_src
vmlal.u8 q15,d4,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vld1.u32 {q6},[r4],r11 @vector load pu1_src
vmlsl.u8 q15,d6,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vld1.u32 {q7},[r4],r9 @vector load pu1_src
vmull.u8 q14,d3,d25
lsl r6,#1
rsb r3,r5,r3,lsl #1
vmlsl.u8 q14,d1,d24
lsl r8,#1
rsb r7,r5,r2,lsl #1
vmlal.u8 q14,d5,d26
vmlsl.u8 q14,d7,d27
cmp r14,#32
beq epilog_end
sub r14,#64
inner_loop_16:
@ and r7, r12, #31 @decrement the wd loop
@ cmp r7, r0
pld [r12, r2, lsl #2]
pld [r4, r2, lsl #2]
subs r10,r10,#16
vmull.u8 q11,d10,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
@ addeq r12,r12,r2,lsl #1
@ subeq r12,r12,r5
addeq r12,r12,r7
addeq r4,r12,r2
vst1.16 {q15}, [r1]!
vmlsl.u8 q11,d8,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {q0},[r12],r11 @vector load pu1_src
vmlal.u8 q11,d12,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vld1.u32 {q1},[r12],r11 @vector load pu1_src
vmlsl.u8 q11,d14,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vld1.u32 {q2},[r12],r11 @vector load pu1_src
vmull.u8 q10,d11,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
vst1.16 {q14}, [r1],r8
vmlsl.u8 q10,d9,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {q3},[r12],r9 @vector load pu1_src
vmlal.u8 q10,d13,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vld1.u32 {q4},[r4],r11 @vector load pu1_src
vmlsl.u8 q10,d15,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vld1.u32 {q5},[r4],r11 @vector load pu1_src
vmull.u8 q15,d2,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
vld1.u32 {q6},[r4],r11 @vector load pu1_src
vmlsl.u8 q15,d0,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {q7},[r4],r9 @vector load pu1_src
vmlal.u8 q15,d4,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vst1.16 {q11},[r1]! @store the result pu1_dst
vmlsl.u8 q15,d6,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
moveq r10,r5 @2wd
vmull.u8 q14,d3,d25
vmlsl.u8 q14,d1,d24
vst1.16 {q10},[r1],r6 @store the result pu1_dst
addeq r1,r1,r3,lsl #1
vmlal.u8 q14,d5,d26
subs r14,r14,#32 @decrement the ht loop
vmlsl.u8 q14,d7,d27
@ mov r0, r7
bgt inner_loop_16
add r14,r14,#64
cmp r14,#32
beq epilog_end
epilog:
vst1.16 {q15}, [r1]!
vmull.u8 q11,d10,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
vst1.16 {q14}, [r1],r8
vmlsl.u8 q11,d8,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
subs r10,r10,#16 @decrement the wd loop
vmlal.u8 q11,d12,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
@ addeq r12,r12,r2,lsl #1
addeq r12,r12,r7
vmlsl.u8 q11,d14,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
@ subeq r12,r12,r5
moveq r10,r5 @2wd
addeq r4,r12,r2
vmull.u8 q10,d11,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
vld1.u32 {q0},[r12],r11 @vector load pu1_src
vmlsl.u8 q10,d9,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {q1},[r12],r11 @vector load pu1_src
vmlal.u8 q10,d13,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vld1.u32 {q2},[r12],r11 @vector load pu1_src
vmlsl.u8 q10,d15,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vld1.u32 {q3},[r12],r9 @vector load pu1_src
vmull.u8 q15,d2,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
vld1.u32 {q4},[r4],r11 @vector load pu1_src
vmlsl.u8 q15,d0,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {q5},[r4],r11 @vector load pu1_src
vmlal.u8 q15,d4,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vmlsl.u8 q15,d6,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vld1.u32 {q6},[r4],r11 @vector load pu1_src
vmull.u8 q14,d3,d25
vld1.u32 {q7},[r4],r9 @vector load pu1_src
vmlsl.u8 q14,d1,d24
vst1.16 {q11},[r1]! @store the result pu1_dst
vmlal.u8 q14,d5,d26
vst1.16 {q10},[r1],r6 @store the result pu1_dst
vmlsl.u8 q14,d7,d27
addeq r1,r1,r3,lsl #1
epilog_end:
vmull.u8 q11,d10,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
vmlsl.u8 q11,d8,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vmlal.u8 q11,d12,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vmlsl.u8 q11,d14,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vmull.u8 q10,d11,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
vmlsl.u8 q10,d9,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vmlal.u8 q10,d13,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vmlsl.u8 q10,d15,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vst1.16 {q15}, [r1]!
vst1.16 {q14}, [r1],r8
vst1.16 {q11},[r1]! @store the result pu1_dst
vst1.16 {q10},[r1],r6 @store the result pu1_dst
ldr r6,[sp,#44] @loads ht
and r7,r6,#1
cmp r7,#0
mov r10,r5
addne r12,r12,r2,lsl #1
subne r12,r12,r5
addne r1,r1,r3,lsl #1
bgt loop_residue_4
b end_loops
outer_loop_8:
add r6,r1,r3,lsl #1 @pu1_dst + dst_strd
mov r10,r5 @2wd
add r4,r12,r2 @pu1_src + src_strd
inner_loop_8:
@vld1.u32 {d0,d1},[r12],r11 @vector load pu1_src
vld1.u32 {d0},[r12],r11 @vector load pu1_src
vld1.u32 {d1},[r12],r11 @vector load pu1_src
vld1.u32 {d2},[r12],r11 @vector load pu1_src
vld1.u32 {d3},[r12],r11 @vector load pu1_src
@vext.u8 d2,d0,d1,#2 @vector extract of src[0_2]
vmull.u8 q4,d1,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
vmlsl.u8 q4,d0,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
@vext.u8 d4,d0,d1,#4 @vector extract of src[0_4]
@vext.u8 d6,d0,d1,#6 @vector extract of src[0_6]
vmlal.u8 q4,d2,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vmlsl.u8 q4,d3,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
@vld1.u32 {d12,d13},[r4],r11 @vector load pu1_src + src_strd
vld1.u32 {d4},[r4],r11 @vector load pu1_src
vld1.u32 {d5},[r4],r11 @vector load pu1_src
vld1.u32 {d6},[r4],r11 @vector load pu1_src
vld1.u32 {d7},[r4],r11 @vector load pu1_src
@vext.u8 d14,d12,d13,#2 @vector extract of src[0_2]
vmull.u8 q5,d5,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
vmlsl.u8 q5,d4,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
@vext.u8 d16,d12,d13,#4 @vector extract of src[0_4]
@vext.u8 d18,d12,d13,#6 @vector extract of src[0_6]
vmlal.u8 q5,d6,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vmlsl.u8 q5,d7,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vst1.16 {d8, d9}, [r1]!
subs r10,r10,#8 @decrement the wd loop
vst1.16 {d10, d11},[r6]! @store the result pu1_dst
bgt inner_loop_8
sub r12,r12,r5
subs r14,r14,#2 @decrement the ht loop
sub r1,r1,r5,lsl #1
add r12,r12,r2,lsl #1
add r1,r1,r3,lsl #2
bgt outer_loop_8
cmp r7,#0
mov r10,r5
bgt loop_residue_4
b end_loops
@height if 4 comes
outer_loop_ht_4:
mov r10,r5
prologue_ht_4:
mov r8,r3,lsl #1
inner_loop_ht_4:
mov r12,r9
mov r4,r1
sub r0, r2, #6 @ not sure if r0 needs to be preserved
vld1.u32 {d0},[r12],r11 @(1)vector load pu1_src
vld1.u32 {d1},[r12],r11 @(1)vector load pu1_src
vld1.u32 {d2},[r12],r11 @(1)vector load pu1_src
vld1.u32 {d3},[r12],r0 @(1)vector load pu1_src
vld1.u32 {d4},[r12],r11 @(2)vector load pu1_src
vld1.u32 {d5},[r12],r11 @(2)vector load pu1_src
vld1.u32 {d6},[r12],r11 @(2)vector load pu1_src
vld1.u32 {d7},[r12],r0 @(2)vector load pu1_src
vld1.u32 {d14},[r12],r11 @(3)vector load pu1_src
vmull.u8 q4,d1,d25 @(1)mul_res = vmull_u8(src[0_3], coeffabs_3)@
vld1.u32 {d15},[r12],r11 @(3)vector load pu1_src
vmlsl.u8 q4,d0,d24 @(1)mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {d16},[r12],r11 @(3)vector load pu1_src
vmlal.u8 q4,d2,d26 @(1)mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vld1.u32 {d17},[r12],r0 @(3)vector load pu1_src
vmlsl.u8 q4,d3,d27 @(1)mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vld1.u32 {d18},[r12],r11 @(4)vector load pu1_src
vmull.u8 q5,d5,d25 @(2)mul_res = vmull_u8(src[0_3], coeffabs_3)@
vld1.u32 {d19},[r12],r11 @(4)vector load pu1_src
vmlsl.u8 q5,d4,d24 @(2)mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {d20},[r12],r11 @(4)vector load pu1_src
vmlal.u8 q5,d6,d26 @(2)mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vld1.u32 {d21},[r12],r2 @(4)vector load pu1_src
vmlsl.u8 q5,d7,d27 @(2)mul_res = vmlal_u8(src[0_1], coeffabs_1)@
add r9,r9,#8 @(core loop)
subs r10,r10,#8 @(prologue)decrement the wd loop
beq epilogue
core_loop:
vst1.16 {d8, d9},[r4],r8 @(1)store the result pu1_dst
mov r12,r9
vld1.u32 {d0},[r12],r11 @(1_1)vector load pu1_src
vmull.u8 q6,d15,d25 @(3)mul_res = vmull_u8(src[0_3], coeffabs_3)@
vld1.u32 {d1},[r12],r11 @(1_1)vector load pu1_src
vmlsl.u8 q6,d14,d24 @(3)mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {d2},[r12],r11 @(1_1)vector load pu1_src
vmlal.u8 q6,d16,d26 @(3)mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vld1.u32 {d3},[r12],r0 @(1_1)vector load pu1_src
vmlsl.u8 q6,d17,d27 @(3)mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vst1.16 {d10, d11},[r4],r8 @(2)store the result pu1_dst
add r9,r9,#8 @(core loop)
vld1.u32 {d4},[r12],r11 @(2_1)vector load pu1_src
vmull.u8 q11,d19,d25 @(4)mul_res = vmull_u8(src[0_3], coeffabs_3)@
vld1.u32 {d5},[r12],r11 @(2_1)vector load pu1_src
vmlsl.u8 q11,d18,d24 @(4)mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {d6},[r12],r11 @(2_1)vector load pu1_src
vmlal.u8 q11,d20,d26 @(4)mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vld1.u32 {d7},[r12],r0 @(2_1)vector load pu1_src
vmlsl.u8 q11,d21,d27 @(4)mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vst1.16 {d12, d13},[r4],r8 @(3)store the result pu1_dst
add r1,r1,#16 @(core loop)
vld1.u32 {d14},[r12],r11 @(3_1)vector load pu1_src
vmull.u8 q4,d1,d25 @(1_1)mul_res = vmull_u8(src[0_3], coeffabs_3)@
vld1.u32 {d15},[r12],r11 @(3_1)vector load pu1_src
vmlsl.u8 q4,d0,d24 @(1_1)mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {d16},[r12],r11 @(3_1)vector load pu1_src
vmlal.u8 q4,d2,d26 @(1_1)mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vld1.u32 {d17},[r12],r0 @(3_1)vector load pu1_src
vmlsl.u8 q4,d3,d27 @(1_1)mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vst1.16 {d22, d23}, [r4], r8 @(4)store the result pu1_dst
subs r10,r10,#8 @(core loop)
vmull.u8 q5,d5,d25 @(2_1)mul_res = vmull_u8(src[0_3], coeffabs_3)@
vld1.u32 {d18},[r12],r11 @(4_1)vector load pu1_src
vld1.u32 {d19},[r12],r11 @(4_1)vector load pu1_src
vmlsl.u8 q5,d4,d24 @(2_1)mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vld1.u32 {d20},[r12],r11 @(4_1)vector load pu1_src
vmlal.u8 q5,d6,d26 @(2_1)mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
mov r4, r1 @(core loop)
vld1.u32 {d21},[r12],r0 @(4_1)vector load pu1_src
vmlsl.u8 q5,d7,d27 @(2_1)mul_res = vmlal_u8(src[0_1], coeffabs_1)@
bgt core_loop @loopback
epilogue:
vmull.u8 q6,d15,d25 @(3)mul_res = vmull_u8(src[0_3], coeffabs_3)@
vmlsl.u8 q6,d14,d24 @(3)mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vmlal.u8 q6,d16,d26 @(3)mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vmlsl.u8 q6,d17,d27 @(3)mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vst1.16 {d8, d9},[r4], r8 @(1)store the result pu1_dst
vmull.u8 q11,d19,d25 @(4)mul_res = vmull_u8(src[0_3], coeffabs_3)@
vmlsl.u8 q11,d18,d24 @(4)mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
vmlal.u8 q11,d20,d26 @(4)mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
vmlsl.u8 q11,d21,d27 @(4)mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vst1.16 {d10, d11},[r4], r8 @(2)store the result pu1_dst
vst1.16 {d12, d13},[r4], r8 @(3)store the result pu1_dst
add r1,r1,#16 @(core loop)
vst1.16 {d22, d23},[r4], r8 @(4)store the result pu1_dst
sub r9,r9,r5
subs r14,r14,#4 @decrement the ht loop
sub r1,r1,r5,lsl #1
add r9,r9,r2,lsl #2
add r1,r1,r3,lsl #3
bgt outer_loop_ht_4
cmp r7,#0
mov r10,r5
movgt r12,r9
movgt r4,r1
bgt loop_residue_4
b end_loops
outer_loop_4:
add r6,r1,r3,lsl #1 @pu1_dst + dst_strd
mov r10,r5
add r4,r12,r2 @pu1_src + src_strd
inner_loop_4:
@vld1.u32 {d0,d1},[r12] @vector load pu1_src
vld1.u32 {d0},[r12],r11 @vector load pu1_src
vld1.u32 {d1},[r12],r11 @vector load pu1_src
vld1.u32 {d2},[r12],r11 @vector load pu1_src
vld1.u32 {d3},[r12] @vector load pu1_src
@**** removal
@add r12,r12,#4 @increment the input pointer
@**** removal ends
@**** addn
sub r12,r12,#2 @increment the input pointer
@**** addn ends
vld1.u32 {d4},[r4],r11 @vector load pu1_src
vld1.u32 {d5},[r4],r11 @vector load pu1_src
vld1.u32 {d6},[r4],r11 @vector load pu1_src
vld1.u32 {d7},[r4] @vector load pu1_src
@vext.u8 d2,d0,d1,#2 @vector extract of src[0_2]
@vext.u8 d4,d0,d1,#4 @vector extract of src[0_4]
@vld1.u32 {d12,d13},[r4] @vector load pu1_src + src_strd
@vext.u8 d6,d0,d1,#6 @vector extract of src[0_6]
@add r4,r4,#4 @increment the input pointer
sub r4,r4,#2
@vext.u8 d14,d12,d13,#2 @vector extract of src[0_2]
@vext.u8 d16,d12,d13,#4 @vector extract of src[0_4]
@vext.u8 d18,d12,d13,#6 @vector extract of src[0_6]
@**** removal
@vzip.32 d0,d12 @vector zip the i iteration and ii interation in single register
@vzip.32 d2,d14
@vzip.32 d4,d16
@vzip.32 d6,d18
@**** removal ends
@**** addn
vzip.32 d0,d4 @vector zip the i iteration and ii interation in single register
vzip.32 d1,d5
vzip.32 d2,d6
vzip.32 d3,d7
@**** addn ends
vmull.u8 q4,d1,d25 @arithmetic operations for ii iteration in the same time
vmlsl.u8 q4,d0,d24
vmlal.u8 q4,d2,d26
vmlsl.u8 q4,d3,d27
vst1.32 {d8},[r1]! @store the i iteration result which is in upper part of the register
subs r10,r10,#4 @decrement the wd by 4
vst1.32 {d9},[r6]! @store the ii iteration result which is in lower part of the register
bgt inner_loop_4
sub r12,r12,r5
subs r14,r14,#2 @decrement the ht by 2
sub r1,r1,r5,lsl #1
add r12,r12,r2,lsl #1
add r1,r1,r3,lsl #2
bgt outer_loop_4
cmp r7,#0
mov r10,r5
beq end_loops
loop_residue_4:
mov r10,r5 @2wd
loop_residue:
@vld1.u32 {d0,d1},[r12] @vector load pu1_src
vld1.u32 {d0},[r12],r11 @vector load pu1_src
vld1.u32 {d1},[r12],r11 @vector load pu1_src
vld1.u32 {d2},[r12],r11 @vector load pu1_src
vld1.u32 {d3},[r12] @vector load pu1_src
@vext.u8 d2,d0,d1,#2 @vector extract of src[0_2]
@vmull.u8 q4,d2,d25 @mul_res = vmull_u8(src[0_3], coeffabs_3)@
@vmlsl.u8 q4,d0,d24 @mul_res = vmlsl_u8(src[0_2], coeffabs_2)@
@vext.u8 d4,d0,d1,#4 @vector extract of src[0_4]
@add r12,r12,#4 @pu1_src + 4
sub r12, r12, #2
@vext.u8 d6,d0,d1,#6 @vector extract of src[0_6]
@vmlal.u8 q4,d4,d26 @mul_res = vmlsl_u8(src[0_0], coeffabs_0)@
@vmlsl.u8 q4,d6,d27 @mul_res = vmlal_u8(src[0_1], coeffabs_1)@
vmull.u8 q4,d1,d25
vmlsl.u8 q4,d0,d24
vmlal.u8 q4,d2,d26
vmlsl.u8 q4,d3,d27
vst1.64 {d8 },[r1] @store the result pu1_dst
subs r10,r10,#4 @decrement the wd loop
add r1,r1,#8 @pi2_dst + 8
bgt loop_residue @loop again
@inner loop ends
@add r8,r3,lsl #1 @2*dst_strd
@sub r8,r8,r5,lsl #1 @2*dst_strd - 2wd
@sub r9,r2,r5 @src_strd - 2wd
@subs r7,r7,#1 @decrement the ht loop
@add r12,r12,r9 @pu1_src + src_strd
@add r1,r1,r8 @pu1_dst + 2*dst_strd
@bgt outer_loop_residue_4 @loop again
@b end_loops @jumps to end
end_loops:
ldmfd sp!,{r4-r12,r15} @reload the registers from sp
|