sndtools.h

实现在s3c2440平台上进行音频采集与回放

#ifndef SNDTOOLS_H

#define SNDTOOLS_H

#include <linux/soundcard.h>

#define FMT8BITS AFMT_S8_LE 

#define FMT16BITS AFMT_S16_LE 

#define FMT8K 8000

#define FMT16K 16000

#define FMT22K 22000

#define FMT44K 44000

#define MONO 1

#define STERO 2

#ifndef VAR_STATIC

extern int devfd;

extern int CapMask;

#endif //ifndef VAR_STATIC

//Open sound device, return 1 if open success

//else return 0

int OpenSnd();

//Close sound device

int CloseSnd();

//Set record or playback format, return 1 if success

//else return 0

int SetFormat(int bits, int hz);

//Set record or playback channel, return 1 if success

//else return 1

int SetChannel(int chn);

//Record

int Record(char *buf, int size);

//Playback

int Play(char *buf, int size);

#endif //ifndef SNDTOOLS_H