Linux 마스터 볼륨 조절 .

Linux 마스터 볼륨 조절 .



#include <ioctl.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/soundcard.h>


void VolumeControl( int volume )
{
          int fd = 0;

          if( ( fd = open( "/dev/mixer", O_RDWR ) ) > 0 )
          {
                    volume |= volume << 8;

                    ioctl( fd, SOUND_MIXER_WRITE_VOLUME, &volume );   // 볼륨값을 써주는 곳
          }

          close( fd );
}