Outputs the volume of the specified mixer on the specified device. Works only
on Linux because it uses ALSA.
A simplified configuration can be used on FreeBSD and OpenBSD due to
-the lack of ALSA, the +device+, +mixer+ and +mixder_idx+ options can be
+the lack of ALSA, the +device+ and +mixer+ options can be
ignored on these systems. On these systems the OSS API is used instead to
-query +/dev/mixer+ directly.
+query +/dev/mixer+ directly if +mixer_dix+ is -1, otherwise
++/dev/mixer++mixer_idx+.
*Example order*: +volume master+
}
#endif
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
- char mixerpath[] = "/dev/mixer";
+ char *mixerpath;
+ char defaultmixer[] = "/dev/mixer";
int mixfd, vol, devmask = 0;
pbval = 1;
+ if (mixer_idx > 0)
+ asprintf(&mixerpath, "/dev/mixer%d", mixer_idx);
+ else
+ mixerpath = defaultmixer;
+
if ((mixfd = open(mixerpath, O_RDWR)) < 0)
return;
+
+ if (mixer_idx > 0)
+ free(mixerpath);
+
if (ioctl(mixfd, SOUND_MIXER_READ_DEVMASK, &devmask) == -1)
return;
if (ioctl(mixfd, MIXER_READ(0),&vol) == -1)