#!/usr/bin/perl -w

# mixer-example: read all mixers on the system, if possible

# Copyright (c) 2001 Cepstral LLC
# Written by David Huggins-Daines <dhd@cepstral.com>

# This program is free software: you may copy and modify it under the
# same terms as Perl itself.

use Audio::OSS qw(:funcs @DevNames);
use strict;

for my $i (0..7) {
    # Feh
    if ($i == 0 and ! -f "/dev/mixer0") {
	$i = "";
    }
    last unless open MIXER, "</dev/mixer$i";

    print "/dev/mixer$i:\n";
    # Some folks (FreeBSD) don't have this
    if (defined &get_mixer_info) {
	my ($id, $name) = get_mixer_info(\*MIXER);
	print "id=$id name=$name\n";
    }
    my $mixdevs = mixer_read_devmask(\*MIXER);
    my $stereo = mixer_read_stereodevs(\*MIXER);
    for my $chan (0..31) {
	next unless $mixdevs & (1<<$chan);
	my $cname = $DevNames[$chan];
	my $l = mixer_read(\*MIXER, $chan);
	if ($stereo & (1<<$chan)) {
	    print "\t$cname: left: ", ($l & 0xff), " right: ", ($l >> 8), "\n";
	} else {
	    print "\t$cname: ", ($l & 0xff), "\n";
	}
    }
}