#include <errno.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sun/audioio.h>

/*
 * cdaudio: set audio state for cdrom passthru
 * You could use /dev/audioctl if you didn't
 * want to change some parameters like sampling rate,
 * experimentation can be educational.
 */

char            audio[] = "/dev/audio";

audio_info_t	ai;

int
main(ac, av)
    int             ac;
    char          **av;
{
    int             fd;

    fd = open(audio, O_WRONLY);
    if (fd == -1) {
	perror("opening audio for write");
	return 1;
    }

    /*
     * AUDIO_INITINFO sets all the fields to
     * a special "no-change" value.
     */
    AUDIO_INITINFO(&ai);
    ai.record.sample_rate = 48000;
    ai.record.channels = 2;
    ai.record.precision = 16;
    ai.record.encoding = AUDIO_ENCODING_LINEAR;
    ai.record.gain = 128;
    ai.record.port = AUDIO_LINE_IN;
    ai.play.sample_rate = 48000;
    ai.play.channels = 2;
    ai.play.precision = 16;
    ai.play.encoding = AUDIO_ENCODING_LINEAR;
    ai.play.gain = 128;
    ai.play.port = AUDIO_SPEAKER;
    ai.monitor_gain = 240;
    ai.output_muted = 0;

    (void)ioctl(fd, AUDIO_SETINFO, &ai);

    return 0;
}