How can i read the ID3v2 tag from the MP3 file in Perl

Question

How can i read the ID3v2 tag from the provided MP3 and print all information in Perl? Sample Code will be appreciated

Answer 1

Some thing that worked for me might not be the best solution.

my $myFile = shift or die "Usage: perl task3 <file.mp3>\n";
open myMP3File, "<$myFile" or die "Error! cant open file \n";#open mode read
binmode(myMP3File); #read in binary mode.
#read file and place it in buffer string
my $length = 512;
read (myMP3File, my $buffer, $length);
print "Displaying ID3v2 Header for " .$myFile.": \n";
my $tagHeader = substr($buffer, 0, 10);#first 10 bytes.
my ($IDtag, $version, $revision, $flag, $size) = unpack('A3 h h h N4',$tagHeader);
print "TagID    : $IDtag\n";
print "Version  : $version\n";
print "Revision : $revision\n";
print "Flags    : $flag\n";
print "Size     : $size\n";

my $len = 0;
my $ptr1 = 0;
my $ptr2 = 0;

#Reading frames after header
while (1)
{
    #reading 10 bytes for each frame and adding 10 bytes for next frame 
    $ptr1 += 10+$len;
    $ptr2 = $ptr1+10;

    #reading frame header contains 4bytes frame ID,4 bytes frame size, 2 bytes flags
    my $frameHeader = substr($buffer,$ptr1,10);
    # A null/space padding string, N 16/32 bit value(big-ending) , h hexadecimal string
    my($frameID, $frameSize, $flags) = unpack('A4 N4 h2',$frameHeader);

    #TALB:album-name,TCON:content-type,TIT2:title,TPE1:Artist, TRCK:Track Number,TYER: year
    if (($frameID eq 'TALB') || ($frameID eq 'TCON') || ($frameID eq 'TIT2') || ($frameID eq  'TPE1') || ($frameID eq 'TRCK') || ($frameID eq  'TYER'))
    {
    my $readFrame = substr($buffer, $ptr2, $frameSize);#reading frame content
    my $myFrame = unpack('A*($frameSize)', $readFrame);
    print "$frameID : $myFrame \n";#frame info
    $len=$frameSize;#save pointer location.
    } 
    else
    { die "Ends Here \n"; }
}

close(myMP3File);