openh264-sys2 0.9.7

Low-level bindings for OpenH264.
Documentation
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
/*!
 * \copy
 *     Copyright (c)  2013, Cisco Systems
 *     All rights reserved.
 *
 *     Redistribution and use in source and binary forms, with or without
 *     modification, are permitted provided that the following conditions
 *     are met:
 *
 *        * Redistributions of source code must retain the above copyright
 *          notice, this list of conditions and the following disclaimer.
 *
 *        * Redistributions in binary form must reproduce the above copyright
 *          notice, this list of conditions and the following disclaimer in
 *          the documentation and/or other materials provided with the
 *          distribution.
 *
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *     COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 *     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *     POSSIBILITY OF SUCH DAMAGE.
 *
 */

#if defined(HAVE_NEON_AARCH64) && defined(__aarch64__)
#include "arm_arch64_common_macro.S"

.macro ABS_SUB_SUM_16BYTES arg0, arg1
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabal   \arg0, v0.8b, v1.8b
    uabal2  \arg1, v0.16b,v1.16b
.endm

.macro ABS_SUB_SUM_8x16BYTES arg0, arg1
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabdl   \arg0, v0.8b, v1.8b
    uabdl2  \arg1, v0.16b,v1.16b

    ABS_SUB_SUM_16BYTES \arg0, \arg1
    ABS_SUB_SUM_16BYTES \arg0, \arg1
    ABS_SUB_SUM_16BYTES \arg0, \arg1
    ABS_SUB_SUM_16BYTES \arg0, \arg1
    ABS_SUB_SUM_16BYTES \arg0, \arg1
    ABS_SUB_SUM_16BYTES \arg0, \arg1
    ABS_SUB_SUM_16BYTES \arg0, \arg1
.endm

/*
 * void vaa_calc_sad_neon(uint8_t *cur_data, uint8_t *ref_data, int32_t pic_width, int32_t pic_height, int32_t pic_stride,
 *                      int32_t *psadframe, int32_t *psad8x8)
 */
WELS_ASM_AARCH64_FUNC_BEGIN VAACalcSad_AArch64_neon
    eor     v31.16b, v31.16b, v31.16b

    SIGN_EXTENSION x4, w4
    lsl     x9, x4, #4
    sub     x10, x9, #16    //x10 keep the 16*pic_stride-16
    sub     x9, x9, x2      //x9 keep the 16*pic_stride-pic_width
vaa_calc_sad_loop0:
    mov     w11, w2
vaa_calc_sad_loop1:
    ABS_SUB_SUM_8x16BYTES v2.8h, v3.8h
    ABS_SUB_SUM_8x16BYTES v4.8h, v5.8h

    uaddlv  s2, v2.8h
    uaddlv  s3, v3.8h
    uaddlv  s4, v4.8h
    uaddlv  s5, v5.8h

    st4     {v2.s, v3.s, v4.s, v5.s}[0], [x6], #16
    sub     x0, x0, x10
    sub     x1, x1, x10
    sub     w11, w11, #16
    add     v6.2s, v2.2s, v3.2s
    add     v7.2s, v4.2s, v5.2s
    add     v6.2s, v6.2s, v7.2s
    add     v31.2s, v31.2s, v6.2s
    cbnz    w11, vaa_calc_sad_loop1

    add     x0, x0, x9
    add     x1, x1, x9
    sub     w3, w3, #16
    cbnz    w3, vaa_calc_sad_loop0

    str     s31, [x5]

WELS_ASM_AARCH64_FUNC_END

.macro SAD_SD_MAD_8x16BYTES
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v31.16b, v0.16b, v1.16b
    uaddlp  v2.8h, v31.16b
    uaddlp  v4.8h, v0.16b
    uaddlp  v5.8h, v1.16b
.rept 7
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v30.16b, v0.16b, v1.16b
    umax    v31.16b, v31.16b,v30.16b
    uadalp  v2.8h, v30.16b
    uadalp  v4.8h, v0.16b
    uadalp  v5.8h, v1.16b
.endr
.endm
/*
 * void vaa_calc_sad_bgd_neon(uint8_t *cur_data, uint8_t *ref_data, int32_t pic_width, int32_t pic_height, int32_t pic_stride,
 *                             int32_t *psadframe, int32_t *psad8x8, int32_t *p_sd8x8, uint8_t *p_mad8x8)
 */
WELS_ASM_AARCH64_FUNC_BEGIN VAACalcSadBgd_AArch64_neon
    ldr     x15, [sp, #0]
    eor     v28.16b, v28.16b, v28.16b

    SIGN_EXTENSION x4, w4
    lsl     x9, x4, #4
    sub     x10, x9, #16    //x10 keep the 16*pic_stride-16
    sub     x9, x9, x2      //x9 keep the 16*pic_stride-pic_width
vaa_calc_sad_bgd_loop0:
    mov     w11, w2
vaa_calc_sad_bgd_loop1:
    SAD_SD_MAD_8x16BYTES
    umaxv   b24, v31.8b
    ins     v31.d[0], v31.d[1]
    umaxv   b25, v31.8b
    uaddlv  s20, v2.4h
    ins     v2.d[0], v2.d[1]
    uaddlv  s21, v2.4h
    usubl   v6.4s, v4.4h, v5.4h
    usubl2  v7.4s, v4.8h, v5.8h
    addv    s16, v6.4s
    addv    s17, v7.4s

    SAD_SD_MAD_8x16BYTES
    umaxv   b26, v31.8b
    ins     v31.d[0], v31.d[1]
    umaxv   b27, v31.8b
    uaddlv  s22, v2.4h
    ins     v2.d[0], v2.d[1]
    uaddlv  s23, v2.4h
    usubl   v6.4s, v4.4h, v5.4h
    usubl2  v7.4s, v4.8h, v5.8h
    addv    s18, v6.4s
    addv    s19, v7.4s
    st4     {v20.s, v21.s, v22.s, v23.s}[0], [x6], #16

    sub     x0, x0, x10
    sub     x1, x1, x10
    st4     {v16.s, v17.s, v18.s, v19.s}[0], [x7], #16
    sub     w11, w11, #16
    st4     {v24.b, v25.b, v26.b, v27.b}[0], [x15], #4
    add     v29.2s, v20.2s, v21.2s
    add     v30.2s, v22.2s, v23.2s
    add     v29.2s, v29.2s, v30.2s
    add     v28.2s, v28.2s, v29.2s
    cbnz    w11, vaa_calc_sad_bgd_loop1

    add     x0, x0, x9
    add     x1, x1, x9
    sub     w3, w3, #16
    cbnz    w3, vaa_calc_sad_bgd_loop0
    str     s28, [x5]

WELS_ASM_AARCH64_FUNC_END

.macro SAD_SSD_BGD_8x16BYTES_1
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v31.16b, v0.16b, v1.16b
    umull   v30.8h, v31.8b, v31.8b
    uaddlp  v29.4s, v30.8h
    umull2  v30.8h, v31.16b, v31.16b
    uadalp  v29.4s, v30.8h      //  p_sqdiff

    uaddlp  v28.8h, v0.16b      //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uaddlp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h      //  p_sqsum

    uaddlp  v2.8h, v31.16b      //  p_sad
    uaddlp  v4.8h, v0.16b
    uaddlp  v5.8h, v1.16b
.rept 7
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v3.16b, v0.16b, v1.16b
    umax    v31.16b, v31.16b,v3.16b     //p_mad
    umull   v30.8h, v3.8b, v3.8b
    uadalp  v29.4s, v30.8h
    umull2  v30.8h, v3.16b, v3.16b
    uadalp  v29.4s, v30.8h              //  p_sqdiff

    uadalp  v28.8h, v0.16b              //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uadalp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h              //  p_sqsum

    uadalp  v2.8h, v3.16b              //p_sad
    uadalp  v4.8h, v0.16b
    uadalp  v5.8h, v1.16b               //p_sd
.endr
.endm

.macro SAD_SSD_BGD_8x16BYTES_2
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v26.16b, v0.16b, v1.16b
    umull   v30.8h, v26.8b, v26.8b
    uadalp  v29.4s, v30.8h
    umull2  v30.8h, v26.16b, v26.16b
    uadalp  v29.4s, v30.8h      //  p_sqdiff

    uadalp  v28.8h, v0.16b      //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uadalp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h      //  p_sqsum

    uaddlp  v16.8h,v26.16b      //  p_sad
    uaddlp  v6.8h, v0.16b
    uaddlp  v7.8h, v1.16b
.rept 7
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v3.16b, v0.16b, v1.16b
    umax    v26.16b, v26.16b,v3.16b     //p_mad
    umull   v30.8h, v3.8b, v3.8b
    uadalp  v29.4s, v30.8h
    umull2  v30.8h, v3.16b, v3.16b
    uadalp  v29.4s, v30.8h              //  p_sqdiff

    uadalp  v28.8h, v0.16b              //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uadalp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h              //  p_sqsum

    uadalp  v16.8h, v3.16b              //p_sad
    uadalp  v6.8h, v0.16b
    uadalp  v7.8h, v1.16b               //p_sd
.endr
.endm

/*
 * void vaa_calc_sad_ssd_bgd_c(uint8_t *cur_data, uint8_t *ref_data, int32_t pic_width, int32_t pic_height, int32_t pic_stride,
 *        int32_t *psadframe,int32_t *psad8x8, int32_t *psum16x16, int32_t *psqsum16x16, int32_t *psqdiff16x16, int32_t *p_sd8x8, uint8_t *p_mad8x8)
 */
WELS_ASM_AARCH64_FUNC_BEGIN VAACalcSadSsdBgd_AArch64_neon
    ldr     x12, [sp, #0]   //psqsum16x16
    ldr     x13, [sp, #8]   //psqdiff16x16
    ldr     x14, [sp, #16]  //p_sd8x8
    ldr     x15, [sp, #24]  //p_mad8x8
    eor     v17.16b, v17.16b, v17.16b

    SIGN_EXTENSION x4, w4
    lsl     x9, x4, #4
    sub     x10, x9, #16    //x10 keep the 16*pic_stride-16
    sub     x9, x9, x2      //x9 keep the 16*pic_stride-pic_width

vaa_calc_sad_ssd_bgd_height_loop:
    mov     w11, w2
vaa_calc_sad_ssd_bgd_width_loop:
    SAD_SSD_BGD_8x16BYTES_1     //psad:v2, v16, psum:v28, psqsum:v27, psqdiff:v29, psd:v4, v5, v6, v7, pmad:v31, v26
    SAD_SSD_BGD_8x16BYTES_2

    umaxv   b22, v31.8b
    ins     v31.d[0], v31.d[1]
    umaxv   b23, v31.8b
    umaxv   b24, v26.8b
    ins     v26.d[0], v26.d[1]
    umaxv   b25, v26.8b
    st4     {v22.b, v23.b, v24.b, v25.b}[0], [x15], #4

    usubl   v20.4s, v4.4h, v5.4h
    usubl2  v21.4s, v4.8h, v5.8h
    addv    s20, v20.4s
    addv    s21, v21.4s
    usubl   v22.4s, v6.4h, v7.4h
    usubl2  v23.4s, v6.8h, v7.8h
    addv    s22, v22.4s
    addv    s23, v23.4s
    st4     {v20.s, v21.s, v22.s, v23.s}[0], [x14], #16

    uaddlv  s20, v2.4h
    ins     v2.d[0], v2.d[1]
    uaddlv  s21, v2.4h
    uaddlv  s22, v16.4h
    ins     v16.d[0], v16.d[1]
    uaddlv  s23, v16.4h
    st4     {v20.s, v21.s, v22.s, v23.s}[0], [x6], #16

    uaddlv  s28, v28.8h
    str     s28, [x7], #4
    addv    s27, v27.4s
    str     s27, [x12], #4
    addv    s29, v29.4s
    str     s29, [x13], #4

    sub     x0, x0, x10
    sub     x1, x1, x10
    sub     w11, w11, #16
    add     v29.2s, v20.2s, v21.2s
    add     v30.2s, v22.2s, v23.2s
    add     v29.2s, v29.2s, v30.2s
    add     v17.2s, v17.2s, v29.2s
    cbnz    w11, vaa_calc_sad_ssd_bgd_width_loop

    add     x0, x0, x9
    add     x1, x1, x9
    sub     w3, w3, #16
    cbnz    w3, vaa_calc_sad_ssd_bgd_height_loop
    str     s17, [x5]
WELS_ASM_AARCH64_FUNC_END


.macro SAD_SSD_8x16BYTES_1
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v31.16b, v0.16b, v1.16b
    umull   v30.8h, v31.8b, v31.8b
    uaddlp  v29.4s, v30.8h
    umull2  v30.8h, v31.16b, v31.16b
    uadalp  v29.4s, v30.8h      //  p_sqdiff

    uaddlp  v28.8h, v0.16b      //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uaddlp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h      //  p_sqsum

    uaddlp  v2.8h, v31.16b      //  p_sad
.rept 7
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v3.16b, v0.16b, v1.16b
    umull   v30.8h, v3.8b, v3.8b
    uadalp  v29.4s, v30.8h
    umull2  v30.8h, v3.16b, v3.16b
    uadalp  v29.4s, v30.8h              //  p_sqdiff

    uadalp  v28.8h, v0.16b              //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uadalp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h              //  p_sqsum

    uadalp  v2.8h, v3.16b              //p_sad
.endr
.endm

.macro SAD_SSD_8x16BYTES_2
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v26.16b, v0.16b, v1.16b
    umull   v30.8h, v26.8b, v26.8b
    uadalp  v29.4s, v30.8h
    umull2  v30.8h, v26.16b, v26.16b
    uadalp  v29.4s, v30.8h      //  p_sqdiff

    uadalp  v28.8h, v0.16b      //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uadalp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h      //  p_sqsum

    uaddlp  v16.8h,v26.16b      //  p_sad
    uaddlp  v6.8h, v0.16b
    uaddlp  v7.8h, v1.16b
.rept 7
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v3.16b, v0.16b, v1.16b
    umull   v30.8h, v3.8b, v3.8b
    uadalp  v29.4s, v30.8h
    umull2  v30.8h, v3.16b, v3.16b
    uadalp  v29.4s, v30.8h              //  p_sqdiff

    uadalp  v28.8h, v0.16b              //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uadalp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h              //  p_sqsum

    uadalp  v16.8h, v3.16b              //p_sad
.endr
.endm
/*
 * void vaa_calc_sad_ssd_c(uint8_t *cur_data, uint8_t *ref_data, int32_t pic_width, int32_t pic_height, int32_t pic_stride,
 *        int32_t *psadframe,int32_t *psad8x8, int32_t *psum16x16, int32_t *psqsum16x16, int32_t *psqdiff16x16)
 */
WELS_ASM_AARCH64_FUNC_BEGIN VAACalcSadSsd_AArch64_neon
    ldr     x12, [sp, #0]   //psqsum16x16
    ldr     x13, [sp, #8]   //psqdiff16x16
    eor     v17.16b, v17.16b, v17.16b

    SIGN_EXTENSION x4, w4
    lsl     x9, x4, #4
    sub     x10, x9, #16    //x10 keep the 16*pic_stride-16
    sub     x9, x9, x2      //x9 keep the 16*pic_stride-pic_width

vaa_calc_sad_ssd_height_loop:
    mov     w11, w2
vaa_calc_sad_ssd_width_loop:
    SAD_SSD_8x16BYTES_1     //psad:v2, v16, psum:v28, psqsum:v27, psqdiff:v29
    SAD_SSD_8x16BYTES_2

    uaddlv  s20, v2.4h
    ins     v2.d[0], v2.d[1]
    uaddlv  s21, v2.4h
    uaddlv  s22, v16.4h
    ins     v16.d[0], v16.d[1]
    uaddlv  s23, v16.4h
    st4     {v20.s, v21.s, v22.s, v23.s}[0], [x6], #16

    uaddlv  s28, v28.8h
    str     s28, [x7], #4
    addv    s27, v27.4s
    str     s27, [x12], #4
    addv    s29, v29.4s
    str     s29, [x13], #4

    sub     x0, x0, x10
    sub     x1, x1, x10
    sub     w11, w11, #16
    add     v29.2s, v20.2s, v21.2s
    add     v30.2s, v22.2s, v23.2s
    add     v29.2s, v29.2s, v30.2s
    add     v17.2s, v17.2s, v29.2s
    cbnz    w11, vaa_calc_sad_ssd_width_loop

    add     x0, x0, x9
    add     x1, x1, x9
    sub     w3, w3, #16
    cbnz    w3, vaa_calc_sad_ssd_height_loop
    str     s17, [x5]
WELS_ASM_AARCH64_FUNC_END


.macro SAD_VAR_8x16BYTES_1
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v31.16b, v0.16b, v1.16b
    uaddlp  v2.8h, v31.16b      //  p_sad

    uaddlp  v28.8h, v0.16b      //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uaddlp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h      //  p_sqsum

.rept 7
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v3.16b, v0.16b, v1.16b
    uadalp  v2.8h, v3.16b              //p_sad

    uadalp  v28.8h, v0.16b              //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uadalp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h              //  p_sqsum
.endr
.endm
.macro SAD_VAR_8x16BYTES_2
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v26.16b, v0.16b, v1.16b
    uaddlp  v16.8h,v26.16b      //  p_sad

    uadalp  v28.8h, v0.16b      //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uadalp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h      //  p_sqsum
.rept 7
    ld1     {v0.16b}, [x0], x4
    ld1     {v1.16b}, [x1], x4
    uabd    v3.16b, v0.16b, v1.16b
    uadalp  v16.8h, v3.16b              //p_sad

    uadalp  v28.8h, v0.16b              //  p_sum
    umull   v30.8h, v0.8b, v0.8b
    uadalp  v27.4s, v30.8h
    umull2  v30.8h, v0.16b, v0.16b
    uadalp  v27.4s, v30.8h              //  p_sqsum
.endr
.endm

/*
 * void vaa_calc_sad_var_c(uint8_t *cur_data, uint8_t *ref_data, int32_t pic_width, int32_t pic_height, int32_t pic_stride,
 *        int32_t *psadframe,int32_t *psad8x8, int32_t *psum16x16, int32_t *psqsum16x16)
 */
WELS_ASM_AARCH64_FUNC_BEGIN VAACalcSadVar_AArch64_neon
    ldr     x12, [sp, #0]   //psqsum16x16
    eor     v17.16b, v17.16b, v17.16b

    SIGN_EXTENSION x4, w4
    lsl     x9, x4, #4
    sub     x10, x9, #16    //x10 keep the 16*pic_stride-16
    sub     x9, x9, x2      //x9 keep the 16*pic_stride-pic_width

vaa_calc_sad_var_height_loop:
    mov     w11, w2
vaa_calc_sad_var_width_loop:
    SAD_VAR_8x16BYTES_1     //psad:v2, v16, psum:v28, psqsum:v27
    SAD_VAR_8x16BYTES_2

    uaddlv  s20, v2.4h
    ins     v2.d[0], v2.d[1]
    uaddlv  s21, v2.4h
    uaddlv  s22, v16.4h
    ins     v16.d[0], v16.d[1]
    uaddlv  s23, v16.4h
    st4     {v20.s, v21.s, v22.s, v23.s}[0], [x6], #16

    uaddlv  s28, v28.8h
    str     s28, [x7], #4
    addv    s27, v27.4s
    str     s27, [x12], #4

    sub     x0, x0, x10
    sub     x1, x1, x10
    sub     w11, w11, #16
    add     v29.2s, v20.2s, v21.2s
    add     v30.2s, v22.2s, v23.2s
    add     v29.2s, v29.2s, v30.2s
    add     v17.2s, v17.2s, v29.2s

    cbnz    w11, vaa_calc_sad_var_width_loop

    add     x0, x0, x9
    add     x1, x1, x9
    sub     w3, w3, #16
    cbnz    w3, vaa_calc_sad_var_height_loop
    str     s17, [x5]
WELS_ASM_AARCH64_FUNC_END

#endif