57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
|
|
||
|
|
#ifndef SFORMAT_H__
|
||
|
|
#define SFORMAT_H__
|
||
|
|
|
||
|
|
typedef unsigned short uint16;
|
||
|
|
typedef unsigned long uint32;
|
||
|
|
|
||
|
|
#define FORMAT_WAVE 0
|
||
|
|
#define FORMAT_AIFF 1
|
||
|
|
#define FORMAT_NEXT 2
|
||
|
|
|
||
|
|
/* the NeXTStep sound header structure; can be big or little endian */
|
||
|
|
|
||
|
|
typedef struct _nextstep
|
||
|
|
{
|
||
|
|
char ns_fileid[4]; /* magic number '.snd' if file is big-endian */
|
||
|
|
uint32 ns_onset; /* byte offset of first sample */
|
||
|
|
uint32 ns_length; /* length of sound in bytes */
|
||
|
|
uint32 ns_format; /* format; see below */
|
||
|
|
uint32 ns_sr; /* sample rate */
|
||
|
|
uint32 ns_nchans; /* number of channels */
|
||
|
|
char ns_info[4]; /* comment */
|
||
|
|
} t_nextstep;
|
||
|
|
|
||
|
|
#define NS_FORMAT_LINEAR_16 3
|
||
|
|
#define NS_FORMAT_LINEAR_24 4
|
||
|
|
#define NS_FORMAT_FLOAT 6
|
||
|
|
#define SCALE (1./(1024. * 1024. * 1024. * 2.))
|
||
|
|
|
||
|
|
/* the WAVE header. All Wave files are little endian. We assume
|
||
|
|
the "fmt" chunk comes first which is usually the case but perhaps not
|
||
|
|
always; same for AIFF and the "COMM" chunk. */
|
||
|
|
|
||
|
|
typedef unsigned word;
|
||
|
|
typedef unsigned long dword;
|
||
|
|
|
||
|
|
typedef struct _wave
|
||
|
|
{
|
||
|
|
char w_fileid[4]; /* chunk id 'RIFF' */
|
||
|
|
uint32 w_chunksize; /* chunk size */
|
||
|
|
char w_waveid[4]; /* wave chunk id 'WAVE' */
|
||
|
|
char w_fmtid[4]; /* format chunk id 'fmt ' */
|
||
|
|
uint32 w_fmtchunksize; /* format chunk size */
|
||
|
|
uint16 w_fmttag; /* format tag, 1 for PCM */
|
||
|
|
uint16 w_nchannels; /* number of channels */
|
||
|
|
uint32 w_samplespersec; /* sample rate in hz */
|
||
|
|
uint32 w_navgbytespersec; /* average bytes per second */
|
||
|
|
uint16 w_nblockalign; /* number of bytes per sample */
|
||
|
|
uint16 w_nbitspersample; /* number of bits in a sample */
|
||
|
|
char w_datachunkid[4]; /* data chunk id 'data' */
|
||
|
|
uint32 w_datachunksize; /* length of data chunk */
|
||
|
|
} t_wave;
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|