mplayer移植到S3C2440（四）音量控制

设置音量的程序

#include
#include
#include
#include
#define ARM

int main(int argc, char *argv[])
{
        int volume_read,volume_write,mixerfd;
        if(argc != 3){
                printf("usage: %s volume_write volume_read\n", argv[0]);
                printf("example: %s 30 50\n",argv[0]);
                exit(-1);
    &

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