Statistics
| Branch: | Revision:

ffmpeg / libavcodec / arm / synth_filter_neon.S @ 80ba1ddb

History | View | Annotate | Download (4.14 KB)

1
/*
2
 * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
3
 *
4
 * This file is part of FFmpeg.
5
 *
6
 * FFmpeg is free software; you can redistribute it and/or
7
 * modify it under the terms of the GNU Lesser General Public
8
 * License as published by the Free Software Foundation; either
9
 * version 2.1 of the License, or (at your option) any later version.
10
 *
11
 * FFmpeg is distributed in the hope that it will be useful,
12
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
 * Lesser General Public License for more details.
15
 *
16
 * You should have received a copy of the GNU Lesser General Public
17
 * License along with FFmpeg; if not, write to the Free Software
18
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
 */
20

    
21
#include "asm.S"
22

    
23
        preserve8
24

    
25
function ff_synth_filter_float_neon, export=1
26
        push            {r3-r11,lr}
27

    
28
        ldr             r4,  [r2]               @ synth_buf_offset
29
        add             r1,  r1,  r4,  lsl #2   @ synth_buf
30
        sub             r12, r4,  #32
31
        bfc             r12, #9,  #23
32
        bic             r4,  r4,  #63
33
        str             r12, [r2]
34

    
35
        ldr             r2,  [sp, #12*4]        @ in
36
        mov             r9,  r1                 @ synth_buf
37

    
38
VFP     vpush           {d0}
39
        bl              X(ff_imdct_half_neon)
40
VFP     vpop            {d0}
41
        pop             {r3}
42

    
43
        ldr             r5,  [sp, #9*4]         @ window
44
        ldr             r2,  [sp, #10*4]        @ out
45
NOVFP   vldr            s0,  [sp, #12*4]        @ scale
46
        add             r8,  r9,  #12*4
47

    
48
        mov             lr,  #64*4
49
        mov             r1,  #4
50
1:
51
        add             r10, r9,  #16*4         @ synth_buf
52
        add             r11, r8,  #16*4
53
        add             r0,  r5,  #16*4         @ window
54
        add             r6,  r5,  #32*4
55
        add             r7,  r5,  #48*4
56

    
57
        vld1.32         {q10},    [r3,:128]     @ a
58
        add             r3,  r3,  #16*4
59
        vld1.32         {q1},     [r3,:128]     @ b
60
        vmov.f32        q2,  #0.0               @ c
61
        vmov.f32        q3,  #0.0               @ d
62

    
63
        mov             r12, #512
64
2:
65
        vld1.32         {q9},     [r8, :128], lr
66
        vrev64.32       q9,  q9
67
        vld1.32         {q8},     [r5, :128], lr
68
        vmls.f32        d20, d16, d19
69
        vld1.32         {q11},    [r0, :128], lr
70
        vmls.f32        d21, d17, d18
71
        vld1.32         {q12},    [r9, :128], lr
72
        vmla.f32        d2,  d22, d24
73
        vld1.32         {q8},     [r6, :128], lr
74
        vmla.f32        d3,  d23, d25
75
        vld1.32         {q9},     [r10,:128], lr
76
        vmla.f32        d4,  d16, d18
77
        vld1.32         {q12},    [r11,:128], lr
78
        vmla.f32        d5,  d17, d19
79
        vrev64.32       q12, q12
80
        vld1.32         {q11},    [r7, :128], lr
81
        vmla.f32        d6,  d22, d25
82
        vmla.f32        d7,  d23, d24
83
        subs            r12, r12, #64
84
        beq             3f
85
        cmp             r12, r4
86
        bne             2b
87
        sub             r8,  r8,  #512*4
88
        sub             r9,  r9,  #512*4
89
        sub             r10, r10, #512*4
90
        sub             r11, r11, #512*4
91
        b               2b
92
3:
93
        vmul.f32        q8,  q10, d0[0]
94
        vmul.f32        q9,  q1,  d0[0]
95
        vst1.32         {q3},     [r3,:128]
96
        sub             r3,  r3,  #16*4
97
        vst1.32         {q2},     [r3,:128]
98
        vst1.32         {q8},     [r2,:128]
99
        add             r2,  r2,  #16*4
100
        vst1.32         {q9},     [r2,:128]
101

    
102
        subs            r1,  r1,  #1
103
        popeq           {r4-r11,pc}
104

    
105
        cmp             r4,  #0
106
        subeq           r8,  r8,  #512*4
107
        subeq           r9,  r9,  #512*4
108
        sub             r5,  r5,  #512*4
109
        sub             r2,  r2,  #12*4         @ out
110
        add             r3,  r3,  #4*4          @ synth_buf2
111
        add             r5,  r5,  #4*4          @ window
112
        add             r9,  r9,  #4*4          @ synth_buf
113
        sub             r8,  r8,  #4*4          @ synth_buf
114
        b               1b
115
endfunc