#ifndef Sfiles_h#define Sfiles_h#include "unistd.h"  struct waveheader {    u_long	main_chunk;	/* 'RIFF' */    u_long	length;		/* filelen */    u_long	chunk_type;	/* 'WAVE' */    u_long	sub_chunk;	/* 'fmt ' */    u_long	sc_len;		/* length of sub_chunk, =16 */    u_short	format;		/* should be 1 for PCM-code */    u_short	modus;		/* 1 Mono, 2 Stereo */    u_long	sample_fq;	/* frequence of sample */    u_long	byte_p_sec;    u_short	byte_p_spl;	/* samplesize; 1 or 2 bytes */    u_short	bit_p_spl;	/* 8, 12 or 16 bit */     u_long	data_chunk;	/* 'data' */    u_long	data_length;	/* samplecount */  };  typedef struct struct_auheader {    int magic;               /* magic number SND_MAGIC */    int dataLocation;        /* offset or pointer to the data */    int dataSize;            /* number of bytes of data */    int dataFormat;          /* the data format code */    int samplingRate;        /* the sampling rate */    int channelCount;        /* the number of channels */    char info[13];            /* optional text information */} AuHeader;    #endif