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
|
@ This file was created from a .asm file
@ using the ads2gas.pl script.
.syntax unified
@
@ Copyright (c) 2013 The WebM project authors. All Rights Reserved.
@
@ Use of this source code is governed by a BSD-style license and patent
@ grant that can be found in the LICENSE file in the root of the source
@ tree. All contributing project authors may be found in the AUTHORS
@ file in the root of the source tree.
@
.global vpx_idct4x4_1_add_neon
.type vpx_idct4x4_1_add_neon, function
.arm
.eabi_attribute 24, 1 @Tag_ABI_align_needed
.eabi_attribute 25, 1 @Tag_ABI_align_preserved
.text
.p2align 2
@void vpx_idct4x4_1_add_neon(int16_t *input, uint8_t *dest, int stride)
@
@ r0 int16_t input
@ r1 uint8_t *dest
@ r2 int stride)
vpx_idct4x4_1_add_neon: @ PROC
ldrsh r0, [r0]
@ cospi_16_64 = 11585
movw r12, #0x2d41
@ out = dct_const_round_shift(input[0] * cospi_16_64)
mul r0, r0, r12 @ input[0] * cospi_16_64
add r0, r0, #0x2000 @ +(1 << ((DCT_CONST_BITS) - 1))
asr r0, r0, #14 @ >> DCT_CONST_BITS
@ out = dct_const_round_shift(out * cospi_16_64)
mul r0, r0, r12 @ out * cospi_16_64
mov r12, r1 @ save dest
add r0, r0, #0x2000 @ +(1 << ((DCT_CONST_BITS) - 1))
asr r0, r0, #14 @ >> DCT_CONST_BITS
@ a1 = ROUND_POWER_OF_TWO(out, 4)
add r0, r0, #8 @ + (1 <<((4) - 1))
asr r0, r0, #4 @ >> 4
vdup.s16 q0, r0 @ duplicate a1
vld1.32 {d2[0]}, [r1], r2
vld1.32 {d2[1]}, [r1], r2
vld1.32 {d4[0]}, [r1], r2
vld1.32 {d4[1]}, [r1]
vaddw.u8 q8, q0, d2 @ dest[x] + a1
vaddw.u8 q9, q0, d4
vqmovun.s16 d6, q8 @ clip_pixel
vqmovun.s16 d7, q9
vst1.32 {d6[0]}, [r12], r2
vst1.32 {d6[1]}, [r12], r2
vst1.32 {d7[0]}, [r12], r2
vst1.32 {d7[1]}, [r12]
bx lr
.size vpx_idct4x4_1_add_neon, .-vpx_idct4x4_1_add_neon @ ENDP @ |vpx_idct4x4_1_add_neon|
.section .note.GNU-stack,"",%progbits
|
