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
|
;
; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
;
; Use of this source code is governed by a BSD-style license
; that can be found in the LICENSE file in the root of the source
; tree. An additional intellectual property rights grant can be found
; in the file PATENTS. All contributing project authors may
; be found in the AUTHORS file in the root of the source tree.
;
EXPORT |vp8_dequant_dc_idct_add_neon|
ARM
REQUIRE8
PRESERVE8
AREA ||.text||, CODE, READONLY, ALIGN=2
;void vp8_dequant_dc_idct_add_neon(short *input, short *dq, unsigned char *pred,
; unsigned char *dest, int pitch, int stride,
; int Dc);
; r0 short *input,
; r1 short *dq,
; r2 unsigned char *pred
; r3 unsigned char *dest
; sp int pitch
; sp+4 int stride
; sp+8 int Dc
|vp8_dequant_dc_idct_add_neon| PROC
vld1.16 {q3, q4}, [r0]
vld1.16 {q5, q6}, [r1]
ldr r1, [sp, #8] ;load Dc from stack
ldr r12, _CONSTANTS_
vmul.i16 q1, q3, q5 ;input for short_idct4x4llm_neon
vmul.i16 q2, q4, q6
vmov.16 d2[0], r1
ldr r1, [sp] ; pitch
vld1.32 {d14[0]}, [r2], r1
vld1.32 {d14[1]}, [r2], r1
vld1.32 {d15[0]}, [r2], r1
vld1.32 {d15[1]}, [r2]
ldr r1, [sp, #4] ; stride
;|short_idct4x4llm_neon| PROC
vld1.16 {d0}, [r12]
vswp d3, d4 ;q2(vp[4] vp[12])
vqdmulh.s16 q3, q2, d0[2]
vqdmulh.s16 q4, q2, d0[0]
vqadd.s16 d12, d2, d3 ;a1
vqsub.s16 d13, d2, d3 ;b1
vshr.s16 q3, q3, #1
vshr.s16 q4, q4, #1
vqadd.s16 q3, q3, q2
vqadd.s16 q4, q4, q2
vqsub.s16 d10, d6, d9 ;c1
vqadd.s16 d11, d7, d8 ;d1
vqadd.s16 d2, d12, d11
vqadd.s16 d3, d13, d10
vqsub.s16 d4, d13, d10
vqsub.s16 d5, d12, d11
vtrn.32 d2, d4
vtrn.32 d3, d5
vtrn.16 d2, d3
vtrn.16 d4, d5
; memset(input, 0, 32) -- 32bytes
vmov.i16 q14, #0
vswp d3, d4
vqdmulh.s16 q3, q2, d0[2]
vqdmulh.s16 q4, q2, d0[0]
vqadd.s16 d12, d2, d3 ;a1
vqsub.s16 d13, d2, d3 ;b1
vmov q15, q14
vshr.s16 q3, q3, #1
vshr.s16 q4, q4, #1
vqadd.s16 q3, q3, q2
vqadd.s16 q4, q4, q2
vqsub.s16 d10, d6, d9 ;c1
vqadd.s16 d11, d7, d8 ;d1
vqadd.s16 d2, d12, d11
vqadd.s16 d3, d13, d10
vqsub.s16 d4, d13, d10
vqsub.s16 d5, d12, d11
vst1.16 {q14, q15}, [r0]
vrshr.s16 d2, d2, #3
vrshr.s16 d3, d3, #3
vrshr.s16 d4, d4, #3
vrshr.s16 d5, d5, #3
vtrn.32 d2, d4
vtrn.32 d3, d5
vtrn.16 d2, d3
vtrn.16 d4, d5
vaddw.u8 q1, q1, d14
vaddw.u8 q2, q2, d15
vqmovun.s16 d0, q1
vqmovun.s16 d1, q2
vst1.32 {d0[0]}, [r3], r1
vst1.32 {d0[1]}, [r3], r1
vst1.32 {d1[0]}, [r3], r1
vst1.32 {d1[1]}, [r3]
bx lr
ENDP ; |vp8_dequant_dc_idct_add_neon|
; Constant Pool
_CONSTANTS_ DCD cospi8sqrt2minus1
cospi8sqrt2minus1 DCD 0x4e7b4e7b
sinpi8sqrt2 DCD 0x8a8c8a8c
END
|
