Linux环境下用c语言写的播放wav文件的小程序
#include <unistd.h>
#include <fcntl.h>
#include
<sys/types.h>
#include <sys/ioctl.h>
#include
<stdlib.h>
#include <stdio.h>
#include
<linux/soundcard.h>
/* 下面的三个参数是跟具体文件相关的,文件什么样,就要设置成什么样 */
#define RATE 11025
#define SIZE 16
#define CHANNELS
2 // 1表示单声道,2为立体声
/* ................ */
unsigned char
buf[RATE*SIZE/8]; //buf里面正好放一秒钟的音频,下面的计时还要用
int main()
{
int fd;
int wavfd; //wav文件的描述符
int arg; /* ..ioctl..... */
int status; /*
........ */
/* ...... */
fd = open("/dev/dsp",
O_RDWR);
if (fd < 0) {
printf("open of /dev/dsp failed");
exit(1);
}
wavfd = open("a.wav",O_RDONLY);
if (wavfd
< 0) {
printf("open of wav 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)
&nb
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转载:
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devmysql3# ndb_mgm -e shutdown
devmysql4# ndb_mgm -e shutdown
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