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
|
@/******************************************************************************
@ *
@ * Copyright (C) 2015 The Android Open Source Project
@ *
@ * 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.
@ *
@ *****************************************************************************
@ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
@*/
@**
@******************************************************************************
@* @file
@* ih264_intra_pred_luma_16x16_a9q.s
@*
@* @brief
@* Contains function definitions for intra 16x16 Luma prediction .
@*
@* @author
@* Ittiam
@*
@* @par List of Functions:
@*
@* - ih264_intra_pred_luma_16x16_mode_vert_a9q()
@* - ih264_intra_pred_luma_16x16_mode_horz_a9q()
@* - ih264_intra_pred_luma_16x16_mode_dc_a9q()
@* - ih264_intra_pred_luma_16x16_mode_plane_a9q()
@*
@* @remarks
@* None
@*
@*******************************************************************************
@*
@* All the functions here are replicated from ih264_intra_pred_filters.c
@
@**
@**
@**
@
.text
.p2align 2
.extern ih264_gai1_intrapred_luma_plane_coeffs
.hidden ih264_gai1_intrapred_luma_plane_coeffs
scratch_intrapred_addr1:
.long ih264_gai1_intrapred_luma_plane_coeffs - scrlbl1 - 8
@**
@*******************************************************************************
@*
@*ih264_intra_pred_luma_16x16_mode_vert
@*
@* @brief
@* Perform Intra prediction for luma_16x16 mode:vertical
@*
@* @par Description:
@* Perform Intra prediction for luma_16x16 mode:Vertical ,described in sec 8.3.3.1
@*
@* @param[in] pu1_src
@* UWORD8 pointer to the source
@*
@* @param[out] pu1_dst
@* UWORD8 pointer to the destination
@*
@* @param[in] src_strd
@* integer source stride
@*
@* @param[in] dst_strd
@* integer destination stride
@*
@* @param[in] ui_neighboravailability
@* availability of neighbouring pixels(Not used in this function)
@*
@* @returns
@*
@* @remarks
@* None
@*
@*******************************************************************************
@void ih264_intra_pred_luma_16x16_mode_vert(UWORD8 *pu1_src,
@ UWORD8 *pu1_dst,
@ WORD32 src_strd,
@ WORD32 dst_strd,
@ WORD32 ui_neighboravailability)
@**************Variables Vs Registers*****************************************
@ r0 => *pu1_src
@ r1 => *pu1_dst
@ r2 => src_strd
@ r3 => dst_strd
@ r4 => ui_neighboravailability
.global ih264_intra_pred_luma_16x16_mode_vert_a9q
ih264_intra_pred_luma_16x16_mode_vert_a9q:
stmfd sp!, {r4-r12, r14} @store register values to stack
add r0, r0, #17
vld1.8 {q0}, [r0]
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
ldmfd sp!, {r4-r12, pc} @Restoring registers from stack
@******************************************************************************
@**
@*******************************************************************************
@*
@*ih264_intra_pred_luma_16x16_mode_horz
@*
@* @brief
@* Perform Intra prediction for luma_16x16 mode:horizontal
@*
@* @par Description:
@* Perform Intra prediction for luma_16x16 mode:horizontal ,described in sec 8.3.3.2
@*
@* @param[in] pu1_src
@* UWORD8 pointer to the source
@*
@* @param[out] pu1_dst
@* UWORD8 pointer to the destination
@*
@* @param[in] src_strd
@* integer source stride
@*
@* @param[in] dst_strd
@* integer destination stride
@*
@* @param[in] ui_neighboravailability
@* availability of neighbouring pixels(Not used in this function)
@*
@* @returns
@*
@* @remarks
@* None
@*
@*******************************************************************************
@*
@void ih264_intra_pred_luma_16x16_mode_horz(UWORD8 *pu1_src,
@ UWORD8 *pu1_dst,
@ WORD32 src_strd,
@ WORD32 dst_strd,
@ WORD32 ui_neighboravailability)
@**************Variables Vs Registers*****************************************
@ r0 => *pu1_src
@ r1 => *pu1_dst
@ r2 => src_strd
@ r3 => dst_strd
@ r4 => ui_neighboravailability
.global ih264_intra_pred_luma_16x16_mode_horz_a9q
ih264_intra_pred_luma_16x16_mode_horz_a9q:
stmfd sp!, {r14} @store register values to stack
vld1.u8 {q0}, [r0]
mov r2, #14
vdup.u8 q1, d1[7]
vdup.u8 q2, d1[6]
vst1.8 {q1}, [r1], r3
loop_16x16_horz:
vext.8 q0, q0, q0, #14
vst1.8 {q2}, [r1], r3
vdup.u8 q1, d1[7]
subs r2, #2
vdup.u8 q2, d1[6]
vst1.8 {q1}, [r1], r3
bne loop_16x16_horz
vext.8 q0, q0, q0, #14
vst1.8 {q2}, [r1], r3
ldmfd sp!, {pc} @Restoring registers from stack
@******************************************************************************
@**
@*******************************************************************************
@*
@*ih264_intra_pred_luma_16x16_mode_dc
@*
@* @brief
@* Perform Intra prediction for luma_16x16 mode:DC
@*
@* @par Description:
@* Perform Intra prediction for luma_16x16 mode:DC ,described in sec 8.3.3.3
@*
@* @param[in] pu1_src
@* UWORD8 pointer to the source
@*
@* @param[out] pu1_dst
@* UWORD8 pointer to the destination
@*
@* @param[in] src_strd
@* integer source stride
@*
@* @param[in] dst_strd
@* integer destination stride
@*
@* @param[in] ui_neighboravailability
@* availability of neighbouring pixels
@*
@* @returns
@*
@* @remarks
@* None
@*
@*******************************************************************************
@void ih264_intra_pred_luma_16x16_mode_dc(UWORD8 *pu1_src,
@ UWORD8 *pu1_dst,
@ WORD32 src_strd,
@ WORD32 dst_strd,
@ WORD32 ui_neighboravailability)
@**************Variables Vs Registers*****************************************
@ r0 => *pu1_src
@ r1 => *pu1_dst
@ r2 => src_strd
@ r3 => dst_strd
@ r4 => ui_neighboravailability
.global ih264_intra_pred_luma_16x16_mode_dc_a9q
ih264_intra_pred_luma_16x16_mode_dc_a9q:
stmfd sp!, {r4, r14} @store register values to stack
ldr r4, [sp, #8] @r4 => ui_neighboravailability
ands r2, r4, #0x01 @CHECKING IF LEFT_AVAILABLE ELSE BRANCHING TO ONLY TOP AVAILABLE
beq top_available
ands r2, r4, #0x04 @CHECKING IF TOP_AVAILABLE ELSE BRANCHING TO ONLY LEFT AVAILABLE
beq left_available
vld1.u8 {q0}, [r0] @BOTH LEFT AND TOP AVAILABLE
add r0, r0, #17
vpaddl.u8 q0, q0
vld1.u8 {q1}, [r0]
vpaddl.u8 q1, q1
vadd.u16 q0, q0, q1
vadd.u16 d0, d0, d1
vpaddl.u16 d0, d0
vpaddl.u32 d0, d0
vqrshrun.s16 d0, q0, #5
vdup.u8 q0, d0[0]
b str_pred
top_available: @ONLY TOP AVAILABLE
ands r2, r4, #0x04 @CHECKING TOP AVAILABILTY OR ELSE BRANCH TO NONE AVAILABLE
beq none_available
add r0, r0, #17
vld1.u8 {q0}, [r0]
vpaddl.u8 q0, q0
vadd.u16 d0, d0, d1
vpaddl.u16 d0, d0
vpaddl.u32 d0, d0
vqrshrun.s16 d0, q0, #4
vdup.u8 q0, d0[0]
b str_pred
left_available: @ONLY LEFT AVAILABLE
vld1.u8 {q0}, [r0]
vpaddl.u8 q0, q0
vadd.u16 d0, d0, d1
vpaddl.u16 d0, d0
vpaddl.u32 d0, d0
vqrshrun.s16 d0, q0, #4
vdup.u8 q0, d0[0]
b str_pred
none_available: @NONE AVAILABLE
vmov.u8 q0, #128
str_pred:
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
vst1.8 {q0}, [r1], r3
ldmfd sp!, {r4, pc} @Restoring registers from stack
@******************************************************************************
@**
@*******************************************************************************
@*
@*ih264_intra_pred_luma_16x16_mode_plane
@*
@* @brief
@* Perform Intra prediction for luma_16x16 mode:PLANE
@*
@* @par Description:
@* Perform Intra prediction for luma_16x16 mode:PLANE ,described in sec 8.3.3.4
@*
@* @param[in] pu1_src
@* UWORD8 pointer to the source
@*
@* @param[out] pu1_dst
@* UWORD8 pointer to the destination
@*
@* @param[in] src_strd
@* integer source stride
@*
@* @param[in] dst_strd
@* integer destination stride
@*
@* @param[in] ui_neighboravailability
@* availability of neighbouring pixels
@*
@* @returns
@*
@* @remarks
@* None
@*
@*******************************************************************************
@void ih264_intra_pred_luma_16x16_mode_plane(UWORD8 *pu1_src,
@ UWORD8 *pu1_dst,
@ WORD32 src_strd,
@ WORD32 dst_strd,
@ WORD32 ui_neighboravailability)
@**************Variables Vs Registers*****************************************
@ r0 => *pu1_src
@ r1 => *pu1_dst
@ r2 => src_strd
@ r3 => dst_strd
@ r4 => ui_neighboravailability
.global ih264_intra_pred_luma_16x16_mode_plane_a9q
ih264_intra_pred_luma_16x16_mode_plane_a9q:
stmfd sp!, {r4-r10, r12, lr}
mov r2, r1
add r1, r0, #17
add r0, r0, #15
mov r8, #9
sub r1, r1, #1
mov r10, r1 @top_left
mov r4, #-1
vld1.32 d2, [r1], r8
ldr r7, scratch_intrapred_addr1
scrlbl1:
add r7, r7, pc
vld1.32 d0, [r1]
vrev64.8 d2, d2
vld1.32 {q3}, [r7]
vsubl.u8 q0, d0, d2
vmovl.u8 q8, d6
vmul.s16 q0, q0, q8
vmovl.u8 q9, d7
add r7, r0, r4, lsl #3
sub r0, r7, r4, lsl #1
rsb lr, r4, #0x0
vpadd.s16 d0, d0, d1
ldrb r8, [r7], r4
ldrb r9, [r0], lr
vpaddl.s16 d0, d0
sub r12, r8, r9
ldrb r8, [r7], r4
vpaddl.s32 d0, d0
ldrb r9, [r0], lr
sub r8, r8, r9
vshl.s32 d2, d0, #2
add r12, r12, r8, lsl #1
vadd.s32 d0, d0, d2
ldrb r8, [r7], r4
ldrb r9, [r0], lr
vrshr.s32 d0, d0, #6 @ i_b = D0[0]
sub r8, r8, r9
ldrb r5, [r7], r4
add r8, r8, r8, lsl #1
vdup.16 q2, d0[0]
add r12, r12, r8
ldrb r9, [r0], lr
vmul.s16 q0, q2, q8
sub r5, r5, r9
vmul.s16 q1, q2, q9
add r12, r12, r5, lsl #2
ldrb r8, [r7], r4
ldrb r9, [r0], lr
sub r8, r8, r9
ldrb r5, [r7], r4
add r8, r8, r8, lsl #2
ldrb r6, [r0], lr
add r12, r12, r8
ldrb r8, [r7], r4
ldrb r9, [r0], lr
sub r5, r5, r6
sub r8, r8, r9
add r5, r5, r5, lsl #1
rsb r8, r8, r8, lsl #3
add r12, r12, r5, lsl #1
ldrb r5, [r7], r4
ldrb r6, [r10] @top_left
add r12, r12, r8
sub r9, r5, r6
ldrb r6, [r1, #7]
add r12, r12, r9, lsl #3 @ i_c = r12
add r8, r5, r6
add r12, r12, r12, lsl #2
lsl r8, r8, #4 @ i_a = r8
add r12, r12, #0x20
lsr r12, r12, #6
vshl.s16 q14, q2, #3
vdup.16 q3, r12
vdup.16 q15, r8
vshl.s16 q13, q3, #3
vsub.s16 q15, q15, q14
vsub.s16 q15, q15, q13
vadd.s16 q14, q15, q3
mov r0, #14
vadd.s16 q13, q14, q0
vadd.s16 q14, q14, q1
vqrshrun.s16 d20, q13, #5
vqrshrun.s16 d21, q14, #5
loop_16x16_plane:
vadd.s16 q13, q13, q3
vadd.s16 q14, q14, q3
vqrshrun.s16 d22, q13, #5
vst1.32 {q10}, [r2], r3
vqrshrun.s16 d23, q14, #5
vadd.s16 q13, q13, q3
subs r0, #2
vadd.s16 q14, q14, q3
vqrshrun.s16 d20, q13, #5
vst1.32 {q11}, [r2], r3
vqrshrun.s16 d21, q14, #5
bne loop_16x16_plane
vadd.s16 q13, q13, q3
vadd.s16 q14, q14, q3
vqrshrun.s16 d22, q13, #5
vst1.32 {q10}, [r2], r3
vqrshrun.s16 d23, q14, #5
vst1.32 {q11}, [r2], r3
ldmfd sp!, {r4-r10, r12, pc}
|
