wav.c

用8051采用pwm方式播放 串口语音数据

/***************************************************************************
* NAME:         wav.h
*----------------------------------------------------------------------------
* Copyright (c) coolfire.
*----------------------------------------------------------------------------
data: 6/30/07     
*--------------------------------------------------------------------------*/
#include "wav.h"
/*
Byte data[4096];
Uint32 datalen;
Uint32 filelen;

riff_struct *riff_data;
fmt_struct *fmt_data;
wav_struct *wav_data;

wav(Uchar *src)
{

  int fb,Len; 
  FILE *fp;
  Byte len;

	fb = open(src, O_RDWR);
   Len=read(fb,riff_data,12);
   Len=read(fb,fmt_data,24);
   Len=read(fb,wav_data,8);
   
   filelen=lseek(fb,54,SEEK_SET);
   printf("filelen=%d\n",filelen);
   datalen=lseek(fb,0,SEEK_END)-filelen;
   printf("datalen=%d\n",datalen);
   Len=lseek(fb,44,SEEK_SET);
   Len=read(fb,data,datalen);
   return WAV_OK; 
}

int main()
{
 FILE *fp;
 
 wav("/root/ha.wav");
 
 if((fp=fopen("ha.c","wb"))==NULL)
   return 0;
 fwrite(data,sizeof(Byte),2000,fp);
 fclose(fp);
 return 0;
}
*/