Win8 Strawberry 5.30.3.1 (64)  Tue 06/14/2022 17:01:38
C:\@Work\Perl\monks
>perl

use strict;
use warnings;

use Data::Dump qw/dd pp/;

my $ogg_head = pack 'H*',
    '4F6767530002000000000000000083CA3DC0000000009F59730A0113';
dd $ogg_head;  # for debug

my ($ogg_magic, $opus_version, $flags, $granule_position,
    $serial_number, $sequence_number, $checksum, $total_segments,
    $segment_size) =
  # unpack('C4 C1 C1 C8 C4 C4 C4 C1 C1', $buf);
    unpack('a4 C C Q N N N C C', $ogg_head);
print "'$ogg_magic' \n";

dd $ogg_magic, $opus_version, $flags, $granule_position,
   $serial_number, $sequence_number, $checksum, $total_segments,
   $segment_size;

printf "%s %02x %02x %08x %04x %04x %04x %02x %02x \n",
       $ogg_magic, $opus_version, $flags, $granule_position,
       $serial_number, $sequence_number, $checksum, $total_segments,
       $segment_size;

^Z
pack("H*","4f6767530002000000000000000083ca3dc0000000009f59730a0113")
'OggS'
("OggS", 0, 2, 0, 2211069376, 0, 2673439498, 1, 19)
OggS 00 02 00000000 83ca3dc0 0000 9f59730a 01 13

[download]
Note: Check that your version of Perl supports the Q pack/unpack template specifier.

Give a man a fish:  <%-{-{-{-<

In reply to Re: pack/unpack woes by AnomalousMonk
in thread pack/unpack woes by james289o9

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