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
|
/**
*
* This file is derived from libvorbis
* Copyright (c) 2002, Xiph.org Foundation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the Xiph.org Foundation nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @file mdct.h
* MDCT header
*/
#ifndef MDCT_H
#define MDCT_H
#include "../common.h"
#if defined(HAVE_MMX) || defined(HAVE_SSE)
#include "x86/mdct.h"
#endif
#ifdef HAVE_ALTIVEC
#include "ppc/mdct.h"
#endif
#define ONE FCONST(1.0)
#define TWO FCONST(2.0)
#define AFT_PI3_8 FCONST(0.38268343236508977175)
#define AFT_PI2_8 FCONST(0.70710678118654752441)
#define AFT_PI1_8 FCONST(0.92387953251128675613)
struct A52Context;
struct A52ThreadContext;
typedef struct MDCTContext {
void (*mdct)(struct A52ThreadContext *ctx, FLOAT *out, FLOAT *in);
void (*mdct_bitreverse)(struct MDCTContext *mdct, FLOAT *x);
void (*mdct_butterfly_generic)(struct MDCTContext *mdct, FLOAT *x, int points, int trigint);
void (*mdct_butterfly_first)(FLOAT *trig, FLOAT *x, int points);
void (*mdct_butterfly_32)(FLOAT *x);
FLOAT *trig;
#ifndef CONFIG_DOUBLE
#ifdef HAVE_SSE
FLOAT *trig_bitreverse;
FLOAT *trig_forward;
FLOAT *trig_butterfly_first;
FLOAT *trig_butterfly_generic8;
FLOAT *trig_butterfly_generic16;
FLOAT *trig_butterfly_generic32;
FLOAT *trig_butterfly_generic64;
#endif
#endif /* CONFIG_DOUBLE */
int *bitrev;
FLOAT scale;
int n;
int log2n;
} MDCTContext;
#ifdef __cplusplus
extern "C" {
#endif
void mdct_ctx_init(MDCTContext *mdct, int n, FLOAT scale);
void mdct_ctx_close(MDCTContext *mdct);
void mdct(MDCTContext *mdct, FLOAT *out, FLOAT *in);
void midct(MDCTContext *mdct, FLOAT *out, FLOAT *in);
#ifdef __cplusplus
}
#endif
#endif /* MDCT_H */
|
