aac5773f
 hucm
功能基本完成，接口待打磨
|
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
|
/*
* Copyright (C) 2010 Mans Rullgard
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/arm/asm.S"
.macro rac_get_prob h, bs, buf, cw, pr, t0, t1
adds \bs, \bs, \t0
lsl \cw, \cw, \t0
lsl \t0, \h, \t0
rsb \h, \pr, #256
it cs
ldrhcs \t1, [\buf], #2
smlabb \h, \t0, \pr, \h
T itttt cs
rev16cs \t1, \t1
A orrcs \cw, \cw, \t1, lsl \bs
T lslcs \t1, \t1, \bs
T orrcs \cw, \cw, \t1
subcs \bs, \bs, #16
lsr \h, \h, #8
cmp \cw, \h, lsl #16
itt ge
subge \cw, \cw, \h, lsl #16
subge \h, \t0, \h
.endm
.macro rac_get_128 h, bs, buf, cw, t0, t1
adds \bs, \bs, \t0
lsl \cw, \cw, \t0
lsl \t0, \h, \t0
it cs
ldrhcs \t1, [\buf], #2
mov \h, #128
it cs
rev16cs \t1, \t1
add \h, \h, \t0, lsl #7
A orrcs \cw, \cw, \t1, lsl \bs
T ittt cs
T lslcs \t1, \t1, \bs
T orrcs \cw, \cw, \t1
subcs \bs, \bs, #16
lsr \h, \h, #8
cmp \cw, \h, lsl #16
itt ge
subge \cw, \cw, \h, lsl #16
subge \h, \t0, \h
.endm
function ff_decode_block_coeffs_armv6, export=1
push {r0,r1,r4-r11,lr}
movrelx lr, X(ff_vp56_norm_shift)
ldrd r4, r5, [sp, #44] @ token_prob, qmul
cmp r3, #0
ldr r11, [r5]
ldm r0, {r5-r7} @ high, bits, buf
it ne
pkhtbne r11, r11, r11, asr #16
ldr r8, [r0, #16] @ code_word
0:
ldrb r9, [lr, r5]
add r3, r3, #1
ldrb r0, [r4, #1]
rac_get_prob r5, r6, r7, r8, r0, r9, r10
blt 2f
ldrb r9, [lr, r5]
ldrb r0, [r4, #2]
rac_get_prob r5, r6, r7, r8, r0, r9, r10
ldrb r9, [lr, r5]
bge 3f
add r4, r3, r3, lsl #5
sxth r12, r11
add r4, r4, r2
adds r6, r6, r9
add r4, r4, #11
lsl r8, r8, r9
it cs
ldrhcs r10, [r7], #2
lsl r9, r5, r9
mov r5, #128
it cs
rev16cs r10, r10
add r5, r5, r9, lsl #7
T ittt cs
T lslcs r10, r10, r6
T orrcs r8, r8, r10
A orrcs r8, r8, r10, lsl r6
subcs r6, r6, #16
lsr r5, r5, #8
cmp r8, r5, lsl #16
movrel r10, zigzag_scan-1
itt ge
subge r8, r8, r5, lsl #16
subge r5, r9, r5
ldrb r10, [r10, r3]
it ge
rsbge r12, r12, #0
cmp r3, #16
strh r12, [r1, r10]
bge 6f
5:
ldrb r9, [lr, r5]
ldrb r0, [r4]
rac_get_prob r5, r6, r7, r8, r0, r9, r10
pkhtb r11, r11, r11, asr #16
bge 0b
6:
ldr r0, [sp]
ldr r9, [r0, #12]
cmp r7, r9
it hi
movhi r7, r9
stm r0, {r5-r7} @ high, bits, buf
str r8, [r0, #16] @ code_word
add sp, sp, #8
mov r0, r3
pop {r4-r11,pc}
2:
add r4, r3, r3, lsl #5
cmp r3, #16
add r4, r4, r2
pkhtb r11, r11, r11, asr #16
bne 0b
b 6b
3:
ldrb r0, [r4, #3]
rac_get_prob r5, r6, r7, r8, r0, r9, r10
ldrb r9, [lr, r5]
bge 1f
mov r12, #2
ldrb r0, [r4, #4]
rac_get_prob r5, r6, r7, r8, r0, r9, r10
it ge
addge r12, #1
ldrb r9, [lr, r5]
blt 4f
ldrb r0, [r4, #5]
rac_get_prob r5, r6, r7, r8, r0, r9, r10
it ge
addge r12, #1
ldrb r9, [lr, r5]
b 4f
1:
ldrb r0, [r4, #6]
rac_get_prob r5, r6, r7, r8, r0, r9, r10
ldrb r9, [lr, r5]
bge 3f
ldrb r0, [r4, #7]
rac_get_prob r5, r6, r7, r8, r0, r9, r10
ldrb r9, [lr, r5]
bge 2f
mov r12, #5
mov r0, #159
rac_get_prob r5, r6, r7, r8, r0, r9, r10
it ge
addge r12, r12, #1
ldrb r9, [lr, r5]
b 4f
2:
mov r12, #7
mov r0, #165
rac_get_prob r5, r6, r7, r8, r0, r9, r10
it ge
addge r12, r12, #2
ldrb r9, [lr, r5]
mov r0, #145
rac_get_prob r5, r6, r7, r8, r0, r9, r10
it ge
addge r12, r12, #1
ldrb r9, [lr, r5]
b 4f
3:
ldrb r0, [r4, #8]
rac_get_prob r5, r6, r7, r8, r0, r9, r10
it ge
addge r4, r4, #1
ldrb r9, [lr, r5]
ite ge
movge r12, #2
movlt r12, #0
ldrb r0, [r4, #9]
rac_get_prob r5, r6, r7, r8, r0, r9, r10
mov r9, #8
it ge
addge r12, r12, #1
movrelx r4, X(ff_vp8_dct_cat_prob), r1
lsl r9, r9, r12
ldr r4, [r4, r12, lsl #2]
add r12, r9, #3
mov r1, #0
ldrb r0, [r4], #1
1:
ldrb r9, [lr, r5]
lsl r1, r1, #1
rac_get_prob r5, r6, r7, r8, r0, r9, r10
ldrb r0, [r4], #1
it ge
addge r1, r1, #1
cmp r0, #0
bne 1b
ldrb r9, [lr, r5]
add r12, r12, r1
ldr r1, [sp, #4]
4:
add r4, r3, r3, lsl #5
add r4, r4, r2
add r4, r4, #22
rac_get_128 r5, r6, r7, r8, r9, r10
it ge
rsbge r12, r12, #0
smulbb r12, r12, r11
movrel r9, zigzag_scan-1
ldrb r9, [r9, r3]
cmp r3, #16
strh r12, [r1, r9]
bge 6b
b 5b
endfunc
const zigzag_scan
.byte 0, 2, 8, 16
.byte 10, 4, 6, 12
.byte 18, 24, 26, 20
.byte 14, 22, 28, 30
endconst
|
