File Coverage

blib/lib/Audio/Mixer.pm

Criterion	Covered	Total	%
statement	22	35	62.8
branch	5	16	31.2
condition			n/a
subroutine	6	9	66.6
pod	0	3	0.0
total	33	63	52.3

package Audio::Mixer;

#
# Library to query / set various sound mixer parameters.
# See POD documentation below for more info.
#
# Copyright (c) 2000 Sergey Gribov
# This is free software with ABSOLUTELY NO WARRANTY.
# You can redistribute and modify it freely, but please leave
# this message attached to this file.
#
# Subject to terms of GNU General Public License (www.gnu.org)
#
# Last update: $Date: 2002/04/30 00:48:21 $ by $Author: sergey $
# Revision: $Revision: 1.4 $

use strict;
use Carp;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK $AUTOLOAD);

require Exporter;
require DynaLoader;
require AutoLoader;

@ISA = qw(Exporter DynaLoader);
# Items to export into callers namespace by default. Note: do not export
# names by default without a very good reason. Use EXPORT_OK instead.
# Do not simply export all your public functions/methods/constants.
@EXPORT = qw();
@EXPORT_OK = qw(
	MIXER
);
$VERSION = '0.7';

sub AUTOLOAD {
    # This AUTOLOAD is used to 'autoload' constants from the constant()
    # XS function.  If a constant is not found then control is passed
    # to the AUTOLOAD in AutoLoader.

    my $constname;
    ($constname = $AUTOLOAD) =~ s/.*:://;
    croak "& not defined" if $constname eq 'constant';
    my $val = constant($constname, @_ ? $_[0] : 0);
    if ($! != 0) {
	if ($! =~ /Invalid/) {
	    $AutoLoader::AUTOLOAD = $AUTOLOAD;
	    goto &AutoLoader::AUTOLOAD;
	}
	else {
		croak "Your vendor has not defined Audio::Mixer macro $constname";
	}
    }
    no strict 'refs';
    *$AUTOLOAD = sub () { $val };
    goto &$AUTOLOAD;
}

bootstrap Audio::Mixer $VERSION;

# Preloaded methods go here.

# Autoload methods go after =cut, and are processed by the autosplit program.


sub get_cval {
  my $channel = shift;
  my ($val, $lcval, $rcval);
  $val = get_param_val($channel);
  $lcval = $val & 0xff;
  $rcval = $val & 0x10000 ? ($val & 0xff00) >> 8 : $lcval;
  return wantarray ? ($lcval, $rcval) : $val;
}

sub set_cval {
  my ($channel, $lcval, $rcval) = @_;
  $lcval = 0 unless $lcval;
  $rcval = $lcval unless $rcval;
  return set_param_val($channel, $lcval, $rcval);
}

sub get_mixer_params {
  return(split(/ /, get_params_list()));
}

1;
__END__