#!/usr/bin/perl
use warnings;
use strict;
use Tk;

#read README.remote in mpg123 sources 

$|++;

#my $pid = open(FH,"| mpg123 -R  2>&1 "); 
my $pid = open(FH,"| mpg123 -R >/dev/null 2>&1 ");
print "$pid\n";

my $mw = new MainWindow;

my $startbut = $mw->Button(-text =>'Start Play',
          -command => sub{
           syswrite(FH, "LOAD 1bb.mp3\n") ;
          })->pack;


my $pausebut = $mw->Button(-text =>'Pause',
          -command => sub{
           syswrite(FH, "PAUSE\n") ;
          })->pack;

my $exitbut = $mw->Button(-text =>'Exit',
         -command => sub{ exit })->pack;

MainLoop;
__END__

########################################################
#OR with IPC::OPen3
#######################################################
#!/usr/bin/perl
use warnings;
use strict;
use IPC::Open3;
use Tk;

#read README.remote in mpg123 sources 
$|++;
my $pid = open3(\*WRITE,\*READ,0,"mpg123 -R 2>&1");
waitpid($pid, 1);

my $mw = new MainWindow;

my $t = $mw->Scrolled('Text',
                   -bg=>'black',-fg=>'yellow')->pack;

my $startbut = $mw->Button(-text =>'Start Play',
          -command => sub{
          print WRITE "LOAD 1bb.mp3\n";
           })->pack;

my $pausebut = $mw->Button(-text =>'Pause',
          -command => sub{
          print WRITE "PAUSE\n";
           })->pack;

my $exitbut = $mw->Button(-text =>'Exit',
          -command => sub{ exit })->pack;

$mw->fileevent(\*READ, 'readable', [\&fill_text_widget,$t]);

MainLoop;

sub fill_text_widget {
  my($widget) = @_;
  my $text = <READ>;
  $widget->delete('1.0','end');
  $widget->insert('1.0',"$text");
  $widget->yview('end');
}
__END__