Tester utilities
This commit is contained in:
@@ -0,0 +1,289 @@
|
||||
#------------------------------------------------------------------------------
|
||||
# File: AIFF.pm
|
||||
#
|
||||
# Description: Read AIFF meta information
|
||||
#
|
||||
# Revisions: 01/06/2006 - P. Harvey Created
|
||||
# 09/22/2008 - PH Added DjVu support
|
||||
#
|
||||
# References: 1) http://developer.apple.com/documentation/QuickTime/INMAC/SOUND/imsoundmgr.30.htm#pgfId=3190
|
||||
# 2) http://astronomy.swin.edu.au/~pbourke/dataformats/aiff/
|
||||
# 3) http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
|
||||
#------------------------------------------------------------------------------
|
||||
|
||||
package Image::ExifTool::AIFF;
|
||||
|
||||
use strict;
|
||||
use vars qw($VERSION);
|
||||
use Image::ExifTool qw(:DataAccess :Utils);
|
||||
use Image::ExifTool::ID3;
|
||||
|
||||
$VERSION = '1.08';
|
||||
|
||||
# information for time/date-based tags (time zero is Jan 1, 1904)
|
||||
my %timeInfo = (
|
||||
Groups => { 2 => 'Time' },
|
||||
ValueConv => 'ConvertUnixTime($val - ((66 * 365 + 17) * 24 * 3600))',
|
||||
PrintConv => '$self->ConvertDateTime($val)',
|
||||
);
|
||||
|
||||
# AIFF info
|
||||
%Image::ExifTool::AIFF::Main = (
|
||||
GROUPS => { 2 => 'Audio' },
|
||||
NOTES => q{
|
||||
Tags extracted from Audio Interchange File Format (AIFF) files. See
|
||||
L<http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/AIFF/AIFF.html> for
|
||||
the AIFF specification.
|
||||
},
|
||||
# FORM => 'Format',
|
||||
FVER => {
|
||||
Name => 'FormatVersion',
|
||||
SubDirectory => { TagTable => 'Image::ExifTool::AIFF::FormatVers' },
|
||||
},
|
||||
COMM => {
|
||||
Name => 'Common',
|
||||
SubDirectory => { TagTable => 'Image::ExifTool::AIFF::Common' },
|
||||
},
|
||||
COMT => {
|
||||
Name => 'Comment',
|
||||
SubDirectory => { TagTable => 'Image::ExifTool::AIFF::Comment' },
|
||||
},
|
||||
NAME => {
|
||||
Name => 'Name',
|
||||
ValueConv => '$self->Decode($val, "MacRoman")',
|
||||
},
|
||||
AUTH => {
|
||||
Name => 'Author',
|
||||
Groups => { 2 => 'Author' },
|
||||
ValueConv => '$self->Decode($val, "MacRoman")',
|
||||
},
|
||||
'(c) ' => {
|
||||
Name => 'Copyright',
|
||||
Groups => { 2 => 'Author' },
|
||||
ValueConv => '$self->Decode($val, "MacRoman")',
|
||||
},
|
||||
ANNO => {
|
||||
Name => 'Annotation',
|
||||
ValueConv => '$self->Decode($val, "MacRoman")',
|
||||
},
|
||||
'ID3 ' => {
|
||||
Name => 'ID3',
|
||||
SubDirectory => {
|
||||
TagTable => 'Image::ExifTool::ID3::Main',
|
||||
ProcessProc => \&Image::ExifTool::ID3::ProcessID3,
|
||||
},
|
||||
},
|
||||
# SSND => 'SoundData',
|
||||
# MARK => 'Marker',
|
||||
# INST => 'Instrument',
|
||||
# MIDI => 'MidiData',
|
||||
# AESD => 'AudioRecording',
|
||||
# APPL => 'ApplicationSpecific',
|
||||
);
|
||||
|
||||
%Image::ExifTool::AIFF::Common = (
|
||||
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
|
||||
GROUPS => { 2 => 'Audio' },
|
||||
FORMAT => 'int16u',
|
||||
0 => 'NumChannels',
|
||||
1 => { Name => 'NumSampleFrames', Format => 'int32u' },
|
||||
3 => 'SampleSize',
|
||||
4 => { Name => 'SampleRate', Format => 'extended' }, #3
|
||||
9 => {
|
||||
Name => 'CompressionType',
|
||||
Format => 'string[4]',
|
||||
PrintConv => {
|
||||
NONE => 'None',
|
||||
ACE2 => 'ACE 2-to-1',
|
||||
ACE8 => 'ACE 8-to-3',
|
||||
MAC3 => 'MAC 3-to-1',
|
||||
MAC6 => 'MAC 6-to-1',
|
||||
sowt => 'Little-endian, no compression',
|
||||
},
|
||||
},
|
||||
11 => { #PH
|
||||
Name => 'CompressorName',
|
||||
Format => 'pstring',
|
||||
ValueConv => '$self->Decode($val, "MacRoman")',
|
||||
},
|
||||
);
|
||||
|
||||
%Image::ExifTool::AIFF::FormatVers = (
|
||||
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
|
||||
FORMAT => 'int32u',
|
||||
0 => { Name => 'FormatVersionTime', %timeInfo },
|
||||
);
|
||||
|
||||
%Image::ExifTool::AIFF::Comment = (
|
||||
PROCESS_PROC => \&Image::ExifTool::AIFF::ProcessComment,
|
||||
GROUPS => { 2 => 'Audio' },
|
||||
0 => { Name => 'CommentTime', %timeInfo },
|
||||
1 => 'MarkerID',
|
||||
2 => {
|
||||
Name => 'Comment',
|
||||
ValueConv => '$self->Decode($val, "MacRoman")',
|
||||
},
|
||||
);
|
||||
|
||||
%Image::ExifTool::AIFF::Composite = (
|
||||
Duration => {
|
||||
Require => {
|
||||
0 => 'AIFF:SampleRate',
|
||||
1 => 'AIFF:NumSampleFrames',
|
||||
},
|
||||
RawConv => '($val[0] and $val[1]) ? $val[1] / $val[0] : undef',
|
||||
PrintConv => 'ConvertDuration($val)',
|
||||
},
|
||||
);
|
||||
|
||||
# add our composite tags
|
||||
Image::ExifTool::AddCompositeTags('Image::ExifTool::AIFF');
|
||||
|
||||
|
||||
#------------------------------------------------------------------------------
|
||||
# Process AIFF Comment chunk
|
||||
# Inputs: 0) ExifTool object reference, 1) DirInfo reference, 2) tag table ref
|
||||
# Returns: 1 on success
|
||||
sub ProcessComment($$$)
|
||||
{
|
||||
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||||
my $dataPt = $$dirInfo{DataPt};
|
||||
my $dirLen = $$dirInfo{DirLen};
|
||||
my $verbose = $et->Options('Verbose');
|
||||
return 0 unless $dirLen > 2;
|
||||
my $numComments = unpack('n',$$dataPt);
|
||||
my $pos = 2;
|
||||
my $i;
|
||||
$verbose and $et->VerboseDir('Comment', $numComments);
|
||||
for ($i=0; $i<$numComments; ++$i) {
|
||||
last if $pos + 8 > $dirLen;
|
||||
my ($time, $markerID, $size) = unpack("x${pos}Nnn", $$dataPt);
|
||||
$et->HandleTag($tagTablePtr, 0, $time);
|
||||
$et->HandleTag($tagTablePtr, 1, $markerID) if $markerID;
|
||||
$pos += 8;
|
||||
last if $pos + $size > $dirLen;
|
||||
my $val = substr($$dataPt, $pos, $size);
|
||||
$et->HandleTag($tagTablePtr, 2, $val);
|
||||
++$size if $size & 0x01; # account for padding byte if necessary
|
||||
$pos += $size;
|
||||
}
|
||||
}
|
||||
|
||||
#------------------------------------------------------------------------------
|
||||
# Extract information from a AIFF file
|
||||
# Inputs: 0) ExifTool object reference, 1) DirInfo reference
|
||||
# Returns: 1 on success, 0 if this wasn't a valid AIFF file
|
||||
sub ProcessAIFF($$)
|
||||
{
|
||||
my ($et, $dirInfo) = @_;
|
||||
my $raf = $$dirInfo{RAF};
|
||||
my ($buff, $err, $tagTablePtr, $page, $type);
|
||||
|
||||
# verify this is a valid AIFF file
|
||||
return 0 unless $raf->Read($buff, 12) == 12;
|
||||
my $fast3 = $$et{OPTIONS}{FastScan} && $$et{OPTIONS}{FastScan} == 3;
|
||||
my $pos = 12;
|
||||
# check for DjVu image
|
||||
if ($buff =~ /^AT&TFORM/) {
|
||||
# http://www.djvu.org/
|
||||
# http://djvu.sourceforge.net/specs/djvu3changes.txt
|
||||
my $buf2;
|
||||
return 0 unless $raf->Read($buf2, 4) == 4 and $buf2 =~ /^(DJVU|DJVM)/;
|
||||
$pos += 4;
|
||||
$buff = substr($buff, 4) . $buf2;
|
||||
$et->SetFileType('DJVU');
|
||||
return 1 if $fast3;
|
||||
$tagTablePtr = GetTagTable('Image::ExifTool::DjVu::Main');
|
||||
# modifiy FileType to indicate a multi-page document
|
||||
$$et{VALUE}{FileType} .= " (multi-page)" if $buf2 eq 'DJVM';
|
||||
$type = 'DjVu';
|
||||
} else {
|
||||
return 0 unless $buff =~ /^FORM....(AIF(F|C))/s;
|
||||
$et->SetFileType($1);
|
||||
return 1 if $fast3;
|
||||
$tagTablePtr = GetTagTable('Image::ExifTool::AIFF::Main');
|
||||
$type = 'AIFF';
|
||||
}
|
||||
SetByteOrder('MM');
|
||||
my $verbose = $et->Options('Verbose');
|
||||
#
|
||||
# Read through the IFF chunks
|
||||
#
|
||||
for (;;) {
|
||||
$raf->Read($buff, 8) == 8 or last;
|
||||
$pos += 8;
|
||||
my ($tag, $len) = unpack('a4N', $buff);
|
||||
my $tagInfo = $et->GetTagInfo($tagTablePtr, $tag);
|
||||
$et->VPrint(0, "AIFF '${tag}' chunk ($len bytes of data):\n");
|
||||
# AIFF chunks are padded to an even number of bytes
|
||||
my $len2 = $len + ($len & 0x01);
|
||||
if ($tagInfo) {
|
||||
if ($$tagInfo{TypeOnly}) {
|
||||
$len = $len2 = 4;
|
||||
$page = ($page || 0) + 1;
|
||||
$et->VPrint(0, $$et{INDENT} . "Page $page:\n");
|
||||
}
|
||||
$raf->Read($buff, $len2) >= $len or $err=1, last;
|
||||
unless ($$tagInfo{SubDirectory} or $$tagInfo{Binary}) {
|
||||
$buff =~ s/\0+$//; # remove trailing nulls
|
||||
}
|
||||
$et->HandleTag($tagTablePtr, $tag, $buff,
|
||||
DataPt => \$buff,
|
||||
DataPos => $pos,
|
||||
Start => 0,
|
||||
Size => $len,
|
||||
);
|
||||
} elsif ($verbose > 2 and $len2 < 1024000) {
|
||||
$raf->Read($buff, $len2) == $len2 or $err = 1, last;
|
||||
$et->VerboseDump(\$buff);
|
||||
} else {
|
||||
$raf->Seek($len2, 1) or $err=1, last;
|
||||
}
|
||||
$pos += $len2;
|
||||
}
|
||||
$err and $et->Warn("Error reading $type file (corrupted?)");
|
||||
return 1;
|
||||
}
|
||||
|
||||
1; # end
|
||||
|
||||
__END__
|
||||
|
||||
=head1 NAME
|
||||
|
||||
Image::ExifTool::AIFF - Read AIFF meta information
|
||||
|
||||
=head1 SYNOPSIS
|
||||
|
||||
This module is used by Image::ExifTool
|
||||
|
||||
=head1 DESCRIPTION
|
||||
|
||||
This module contains routines required by Image::ExifTool to extract
|
||||
information from AIFF (Audio Interchange File Format) audio files.
|
||||
|
||||
=head1 AUTHOR
|
||||
|
||||
Copyright 2003-2018, Phil Harvey (phil at owl.phy.queensu.ca)
|
||||
|
||||
This library is free software; you can redistribute it and/or modify it
|
||||
under the same terms as Perl itself.
|
||||
|
||||
=head1 REFERENCES
|
||||
|
||||
=over 4
|
||||
|
||||
=item L<http://developer.apple.com/documentation/QuickTime/INMAC/SOUND/imsoundmgr.30.htm#pgfId=3190>
|
||||
|
||||
=item L<http://astronomy.swin.edu.au/~pbourke/dataformats/aiff/>
|
||||
|
||||
=item L<http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/>
|
||||
|
||||
=back
|
||||
|
||||
=head1 SEE ALSO
|
||||
|
||||
L<Image::ExifTool::TagNames/AIFF Tags>,
|
||||
L<Image::ExifTool(3pm)|Image::ExifTool>
|
||||
|
||||
=cut
|
||||
Reference in New Issue
Block a user