#include
#include
#include
#include
#include
typedef struct WAV
{
char riff[4];
long len;
char type[4];
char fmt[4];
char tmp[4];
short pcm;
short channel;
long sample;
long rate;
short framesize;
short bit;
char data[4];
long dblen;
}wav_t;
int main(int argc,char** argv)
{
printf("--size=%d\n",sizeof(wav_t));
int wavfd=open(argv[1],O_CREAT|O_WRONLY);
if(wavfd==-1)
{
printf("wavfd err=%s\n",strerror(errno));
return -1;
}
int speed=44100;
int channel=2;
int bit=16;
struct WAV head={"RIFF",44,"WAVE","fmt ","",0x10,channel,speed,channel*speed*bit/8,channel*bit/8,bit,"data",0};
// printf("channel=%d,speed=%d,bit=%d\n",head.channel,head.sample,head.bit);
write(wavfd,&head,sizeof(head));
close(wavfd);
wavfd=open(argv[1],O_CREAT|O_WRONLY);
int fd=open("/dev/dsp",O_RDONLY);
if(fd==-1)
{
printf("fd err=%s\n",strerror(errno));
return -1;
}
ioctl(fd,SNDCTL_DSP_CHANNELS,&channel);
ioctl(fd,SNDCTL_DSP_SPEED,&speed);
ioctl(fd,SNDCTL_DSP_SETFMT,&bit);
char buf[4096];
int len=0,t=0;
while(1)
{
int size=read(fd,buf,4096);
write(wavfd,buf,size);
len+=size;
t=len/(channel*speed*bit/8);
if(t>=5)break;
}
int all=len+44;
lseek(wavfd,0x04,0);
write(wavfd,&all,4);
lseek(wavfd,0x28,0);
write(wavfd,&len,4);
close(wavfd);
close(fd);
}
