源程序代码如下 请各位大侠帮忙 万分感谢
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define LENGTH 3
#define RATE 8000
#define SIZE 8
#define CHANNELS 1
unsigned char buf[LENGTH*RATE*SIZE*CHANNELS/8];
void *read_sound(void *arg1)
{
int fd;
int arg;
int status;
int count;
FILE * outfile;
outfile = fopen("tt.wav","wb");
fd = open("/dev/dsp", O_RDONLY);
if(fd < 0)
{
perror("open of /dev/dsp failed");
exit(1);
}
arg = SIZE;
status = ioctl(fd, SOUND_PCM_WRITE_BITS, &arg);
if(status == -1)
perror("SOUND_PCM_WRITE_BITS ioctl failed");
if(arg != SIZE)
perror("unable to set sample size");
arg = CHANNELS;
status = ioctl(fd, SOUND_PCM_WRITE_CHANNELS, &arg);
if(status == -1)
perror("SOUND_PCM_WRITE_CHANNELSI ioctl failed");
if(arg != CHANNELS)
perror("unable to set number of channels");
arg = RATE;
status = ioctl(fd,SOUND_PCM_WRITE_RATE, &arg );
if (status == -1)
perror("SOUND_PCM_WRITE_WRITE ioctl failed");
while(count < 20)
{
status = read(fd, buf, sizeof(buf));
if(status != sizeof(buf))
perror("read wrong number of bytes");
printf("ok\n");
fwrite( buf, sizeof(unsigned char),status,outfile);
count++;
}
close(fd);
return NULL;
}
void *write_sound(void *arg2)
{
int fd;
int arg;
int status;
int count = 0;
fd = open("/dev/dsp", O_WRONLY);
if(fd < 0)
{
perror("open of /dev/dsp failed");
exit(1);
}
arg = SIZE;
status = ioctl(fd, SOUND_PCM_WRITE_BITS, &arg);
if(status == -1)
perror("SOUND_PCM_WRITE_BITS ioctl failed");
if(arg != SIZE)
perror("unable to set sample size");
arg = CHANNELS;
status = ioctl(fd, SOUND_PCM_WRITE_CHANNELS, &arg);
if(status == -1)
perror("SOUND_PCM_WRITE_CHANNELSI ioctl failed");
if(arg != CHANNELS)
perror("unable to set number of channels");
arg = RATE;
status = ioctl(fd,SOUND_PCM_WRITE_RATE, &arg );
if (status == -1)
perror("SOUND_PCM_WRITE_WRITE ioctl failed");
while(count < 25)
{
status = write(fd, buf, sizeof(buf));
if(status != sizeof(buf))
perror("wrote wrong number of bytes");
count++;
}
close(fd);
return NULL;
}
int main()
{
pthread_t tidp1, tidp2;
int error;
error = pthread_create(&tidp1,NULL,read_sound,NULL);
if(error != 0)
{
printf("pthread_create is not created...");
return -1;
}
error = pthread_create(&tidp2,NULL,read_sound,NULL);
if(error != 0)
{
printf("pthread_create is not created...");
return -1;
}
pthread_join(tidp1,NULL);
pthread_join(tidp1,NULL);
return 0;
}
于 2012-12-17 19:15:29发表:
你这个问题解决了吗？