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|
#!/usr/bin/perl -w
#$Id: audio.pl,v 1.6 2006/02/10 13:39:24 rocky Exp $
#
# Copyright (C) 2006 Rocky Bernstein <rocky@cpan.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Program to read CD blocks. See read-cd from the libcdio distribution
# for a more complete program.
use strict;
BEGIN {
chdir 'example' if -d 'example';
use lib '../lib';
eval "use blib"; # if we fail keep going - maybe we have installed Cdio
}
use Device::Cdio;
use Device::Cdio::Device;
use Device::Cdio::Track;
use vars qw($0 $program $pause %opts);
my $vcid ='$Id: audio.pl,v 1.6 2006/02/10 13:39:24 rocky Exp $';
sub init() {
use File::Basename;
$program = basename($0); # Who am I today, anyway?
$opts{close}=undef;
$opts{eject}=0;
$opts{pause}=0;
$opts{play}=0;
$opts{resume}=0;
$opts{stop}=0;
}
# Show the CVS version id string and quit.
sub show_version() {
print "$program version $vcid\n";
exit 1;
}
sub usage {
my($full_help) = @_;
print "
usage:
$program [options] [device]
Issue analog audio CD controls - like playing
options:
--help -- print this help and exit
--version -- show a CVS version string and exit
--eject DEVICE -- eject disc from DEVICE
--close DEVICE -- close CD tray of DEVICE
-P | --pause -- pause playing
--play -- play entire CD
--resume -- resume playing
--stop -- stop playing
--track=N -- play track N
";
exit 100;
}
# The bane of programming.
sub process_options() {
use Getopt::Long;
my(@opt_cf);
$Getopt::Long::autoabbrev = 1;
my($help, $long_help, $show_version);
my $result = &GetOptions
(
'help' => \$help,
'close' => \$opts{close},
'eject' => \$opts{eject},
'version' => \$opts{show_version},
'P|pause' => \$opts{pause},
'play' => \$opts{play},
'resume' => \$opts{resume},
'stop' => \$opts{stop},
'track=n' => \$opts{track},
);
show_version() if $show_version;
usage(0) unless $result || @ARGV > 1;
usage(1) if $help;
}
init();
process_options();
my ($drc, $device_name);
# Handle closing the CD-ROM tray if that was specified.
if ($opts{close}) {
$device_name = $opts{close};
$drc = Device::Cdio::close_tray(-drive=>$opts{close});
if ($drc) {
printf "Error closing: %s\n", perlcdio::driver_errmsg($drc) ;
exit $drc;
}
}
my $d;
if ($ARGV[0]) {
$d = Device::Cdio::Device->new($ARGV[0]);
exit(1) if !defined($d);
} else {
# For audio any *has* to be set false.
my @drives = Device::Cdio::get_devices_with_cap(-capabilities=>
$perlcdio::FS_AUDIO,
-any=>0);
if (@drives >= 1) {
$d = Device::Cdio::Device->new($drives[0]);
if (!defined($d)) {
print "Sorry having trouble opening $drives[0]\n";
exit(1);
}
} else {
print "Could not automatically find a CD-ROM with an audio CD in it\n";
print "Please specify a device name\n";
exit(1);
}
}
$device_name = $d->get_device();
if ($opts{play}) {
if ($d->get_disc_mode() ne 'CD-DA') {
printf "The disc on %s I found was not CD-DA, but CD is %s\n",
$device_name, $d->get_disc_mode();
print "I have bad feeling about trying to play this...\n";
}
my $start_lsn = $d->get_first_track()->get_lsn();
my $end_lsn=$d->get_disc_last_lsn();
printf "Playing entire CD on %s\n", $device_name;
$drc = $d->audio_play_lsn($start_lsn, $end_lsn);
printf "Error playing CD: %s\n", perlcdio::driver_errmsg($drc) if ($drc);
} elsif ($opts{track}) {
if ($d->get_disc_mode() ne 'CD-DA') {
printf "The disc on %s I found was not CD-DA, but CD is %s\n",
$device_name, $d->get_disc_mode();
print "I have bad feeling about trying to play this...\n";
}
if ($opts{track} > $d->get_last_track()->{track}) {
printf "Requested track %d but CD only has %d tracks\n",
$opts{track}, $d->get_last_track()->{track};
exit(2);
}
if ($opts{track} < $d->get_first_track()->{track}) {
printf "Requested track %d but first track on CD is %d\n",
$opts{track}, $d->get_first_track()->{track};
exit(2);
}
printf("Playing track %d on %s\n", $opts{track}, $device_name);
my $start_lsn = $d->get_track($opts{track})->get_lsn();
my $end_lsn = $d->get_track($opts{track}+1)->get_lsn();
$drc = $d->audio_play_lsn($start_lsn, $end_lsn);
printf "Error closing: %s\n", perlcdio::driver_errmsg($drc) if ($drc);
} elsif ($opts{pause}) {
printf "Pausing playing in drive %s\n", $device_name;
$drc = $d->audio_pause();
printf "Error pausing: %s\n", perlcdio::driver_errmsg($drc) if ($drc);
} elsif ($opts{resume}) {
printf "Resuming playing in drive %s\n", $device_name;
$drc = $d->audio_resume();
printf "Error resuming: %s\n", perlcdio::driver_errmsg($drc) if ($drc);
} elsif ($opts{stop}) {
printf "Stopping playing in drive %s\n", $device_name;
$drc = $d->audio_stop();
printf("Stopping failed on drive %s: %s\n",
$device_name, perlcdio::driver_errmsg($drc))
if $drc;
} elsif ($opts{eject}) {
print "Ejecting CD in CD-ROM drive $device_name\n";
$drc = $d->eject_media();
printf("Eject failed on drive %s: %s\n",
$device_name, perlcdio::driver_errmsg($drc))
if $drc;
exit $drc;
}
$d->close();
|
