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
|
/**
* GJay, copyright (c) 2002 Chuck Groom
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* Song analysis is done in a daemon process
*/
#ifndef __ANALYSIS_H__
#define __ANALYSIS_H__
#include <stdint.h>
#include "gjay.h"
/* Shamelessly excerpted from the Linux kernel */
#if __BYTE_ORDER == __BIG_ENDIAN
#define le32_to_cpu(x) __swab32((x))
#define le16_to_cpu(x) __swab16((x))
#elif __BYTE_ORDER == __LITTLE_ENDIAN
#define le32_to_cpu(x) ((uint32_t)(x))
#define le16_to_cpu(x) ((uint16_t)(x))
#endif
#define __swab16(x) \
({ \
uint16_t __x = (x); \
((uint16_t)( \
(((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \
(((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \
})
#define __swab32(x) \
({ \
uint32_t __x = (x); \
((uint32_t)( \
(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
})
/* WAV file header */
typedef struct {
unsigned char main_chunk[4]; /* 'RIFF' */
uint32_t length; /* length of file */
unsigned char chunk_type[4]; /* 'WAVE' */
unsigned char sub_chunk[4]; /* 'fmt' */
uint32_t length_chunk; /* length sub_chunk, always 16 bytes */
uint16_t format; /* always 1 = PCM-Code */
uint16_t modus; /* 1 = Mono, 2 = Stereo */
uint32_t sample_fq; /* Sample Freq */
uint32_t byte_p_sec; /* Data per sec */
uint16_t byte_p_spl; /* Bytes per sample */
uint16_t bit_p_spl; /* bits per sample, 8, 12, 16 */
unsigned char data_chunk[4]; /* 'data' */
uint32_t data_length; /* length of data */
} waveheaderstruct;
/* Mutex lock for analysis data */
extern int analyze_percent;
/* Run the analysis of one song */
void run_as_daemon(void);
void run_as_analyze_detached ( const char * analyze_detached_fname );
/* Endian stuff */
void wav_header_swab(waveheaderstruct * header);
unsigned long swab_ul(unsigned long l);
unsigned short swab_us(unsigned short s);
#endif /* __ANALYSIS_H__ */
|
