bin/lib/Image/ExifTool/DPX.pm
#------------------------------------------------------------------------------
# File: DPX.pm
#
# Description: Read DPX meta information
#
# Revisions: 2013-09-19 - P. Harvey created
#
# References: 1) http://www.cineon.com/ff_draft.php
# 2) Harry Mallon private communication
#------------------------------------------------------------------------------
package Image::ExifTool::DPX;
use strict;
use vars qw($VERSION);
use Image::ExifTool qw(:DataAccess :Utils);
$VERSION = '1.07';
# DPX tags
%Image::ExifTool::DPX::Main = (
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
GROUPS => { 0 => 'File', 1 => 'File', 2 => 'Image' },
NOTES => 'Tags extracted from DPX (Digital Picture Exchange) images.',
0 => { Name => 'ByteOrder', Format => 'undef[4]', PrintConv => { SDPX => 'Big-endian', XPDS => 'Little-endian' } },
8 => { Name => 'HeaderVersion', Format => 'string[8]' },
# 24 => { Name => 'GenericHeaderSize', Format => 'int32u' }, # = 1664
# 28 => { Name => 'IndustryStandardHeaderSize', Format => 'int32u' }, # = 384
16 => { Name => 'DPXFileSize', Format => 'int32u' },
20 => { Name => 'DittoKey', Format => 'int32u', PrintConv => { 0 => 'Same', 1 => 'New' } },
36 => { Name => 'ImageFileName', Format => 'string[100]' },
136 => {
Name => 'CreateDate',
Format => 'string[24]',
Groups => { 2 => 'Time' },
ValueConv => '$val =~ s/(\d{4}:\d{2}:\d{2}):/$1 /; $val',
PrintConv => '$self->ConvertDateTime($val)',
},
160 => { Name => 'Creator', Format => 'string[100]', Groups => { 2 => 'Author' } },
260 => { Name => 'Project', Format => 'string[200]' },
460 => { Name => 'Copyright', Format => 'string[200]', Groups => { 2 => 'Author' } },
660 => { Name => 'EncryptionKey', Format => 'int32u', PrintConv => 'sprintf("%.8x",$val)' },
768 => {
Name => 'Orientation',
Format => 'int16u',
PrintConv => {
0 => 'Horizontal (normal)',
1 => 'Mirror vertical',
2 => 'Mirror horizontal',
3 => 'Rotate 180',
4 => 'Mirror horizontal and rotate 270 CW',
5 => 'Rotate 90 CW',
6 => 'Rotate 270 CW',
7 => 'Mirror horizontal and rotate 90 CW',
},
},
770 => { Name => 'ImageElements', Format => 'int16u' },
772 => { Name => 'ImageWidth', Format => 'int32u' },
776 => { Name => 'ImageHeight', Format => 'int32u' },
780 => { Name => 'DataSign', Format => 'int32u', PrintConv => { 0 => 'Unsigned', 1 => 'Signed' } },
800 => {
Name => 'ComponentsConfiguration',
Format => 'int8u',
PrintConv => {
0 => 'User-defined single component',
1 => 'Red (R)',
2 => 'Green (G)',
3 => 'Blue (B)',
4 => 'Alpha (matte)',
6 => 'Luminance (Y)',
7 => 'Chrominance (Cb, Cr, subsampled by two)',
8 => 'Depth (Z)',
9 => 'Composite video',
50 => 'R, G, B',
51 => 'R, G, B, Alpha',
52 => 'Alpha, B, G, R',
100 => 'Cb, Y, Cr, Y (4:2:2)',
101 => 'Cb, Y, A, Cr, Y, A (4:2:2:4)',
102 => 'Cb, Y, Cr (4:4:4)',
103 => 'Cb, Y, Cr, A (4:4:4:4)',
150 => 'User-defined 2 component element',
151 => 'User-defined 3 component element',
152 => 'User-defined 4 component element',
153 => 'User-defined 5 component element',
154 => 'User-defined 6 component element',
155 => 'User-defined 7 component element',
156 => 'User-defined 8 component element',
},
},
801 => { #2
Name => 'TransferCharacteristic',
Format => 'int8u',
PrintConv => {
0 => 'User-defined',
1 => 'Printing density',
2 => 'Linear',
3 => 'Logarithmic',
4 => 'Unspecified video',
5 => 'SMPTE 274M',
6 => 'ITU-R 709-4',
7 => 'ITU-R 601-5 system B or G (625)',
8 => 'ITU-R 601-5 system M (525)',
9 => 'Composite video (NTSC)',
10 => 'Composite video (PAL)',
11 => 'Z (depth) - linear',
12 => 'Z (depth) - homogeneous',
13 => 'SMPTE ADX',
14 => 'ITU-R 2020 NCL',
15 => 'ITU-R 2020 CL',
16 => 'IEC 61966-2-4 xvYCC',
17 => 'ITU-R 2100 NCL/PQ',
18 => 'ITU-R 2100 ICtCp/PQ',
19 => 'ITU-R 2100 NCL/HLG',
20 => 'ITU-R 2100 ICtCp/HLG',
21 => 'RP 431-2:2011 Gama 2.6',
22 => 'IEC 61966-2-1 sRGB',
},
},
802 => { #2
Name => 'ColorimetricSpecification',
Format => 'int8u',
PrintConv => {
0 => 'User-defined',
1 => 'Printing density',
4 => 'Unspecified video',
5 => 'SMPTE 274M',
6 => 'ITU-R 709-4',
7 => 'ITU-R 601-5 system B or G (625)',
8 => 'ITU-R 601-5 system M (525)',
9 => 'Composite video (NTSC)',
10 => 'Composite video (PAL)',
13 => 'SMPTE ADX',
14 => 'ITU-R 2020',
15 => 'P3D65',
16 => 'P3DCI',
17 => 'P3D60',
18 => 'ACES',
},
},
803 => { Name => 'BitDepth', Format => 'int8u' },
820 => { Name => 'ImageDescription', Format => 'string[32]' },
892 => { Name => 'Image2Description', Format => 'string[32]', RawConv => '$val=~/[^\xff]/ ? $val : undef' },
964 => { Name => 'Image3Description', Format => 'string[32]', RawConv => '$val=~/[^\xff]/ ? $val : undef' },
1036=> { Name => 'Image4Description', Format => 'string[32]', RawConv => '$val=~/[^\xff]/ ? $val : undef' },
1108=> { Name => 'Image5Description', Format => 'string[32]', RawConv => '$val=~/[^\xff]/ ? $val : undef' },
1180=> { Name => 'Image6Description', Format => 'string[32]', RawConv => '$val=~/[^\xff]/ ? $val : undef' },
1252=> { Name => 'Image7Description', Format => 'string[32]', RawConv => '$val=~/[^\xff]/ ? $val : undef' },
1324=> { Name => 'Image8Description', Format => 'string[32]', RawConv => '$val=~/[^\xff]/ ? $val : undef' },
# 1408=> { Name => 'XOffset', Format => 'int32u' },
# 1412=> { Name => 'YOffset', Format => 'int32u' },
# 1416=> { Name => 'XCenter', Format => 'float' },
# 1420=> { Name => 'YCenter', Format => 'float' },
# 1424=> { Name => 'XOriginalSize', Format => 'int32u' },
# 1428=> { Name => 'YOriginalSize', Format => 'int32u' },
1432=> { Name => 'SourceFileName', Format => 'string[100]' },
1532=> { Name => 'SourceCreateDate', Format => 'string[24]' },
1556=> { Name => 'InputDeviceName', Format => 'string[32]' },
1588=> { Name => 'InputDeviceSerialNumber', Format => 'string[32]' },
# 1620 => { Name => 'Border', Format => 'int16u[4]' },
1628 => {
Name => 'AspectRatio',
Format => 'int32u[2]',
RawConv => '$val =~ /4294967295/ ? undef : $val', # ignore undefined values
PrintConv => q{
return 'undef' if $val eq '0 0';
return 'inf' if $val=~/ 0$/;
my @a=split(' ',$val);
return join(':', Rationalize($a[0]/$a[1]));
},
},
1724 => { Name => 'OriginalFrameRate',Format => 'float' },
1728 => { Name => 'ShutterAngle', Format => 'float', RawConv => '($val =~ /\d/ and $val !~ /nan/i) ? $val : undef' }, #2
1732 => { Name => 'FrameID', Format => 'string[32]' },
1764 => { Name => 'SlateInformation', Format => 'string[100]' },
1920 => { Name => 'TimeCode', Format => 'int32u' }, #2
1940 => { Name => 'FrameRate', Format => 'float', RawConv => '($val =~ /\d/ and $val !~ /nan/i) ? $val : undef' }, #2
1972 => { Name => 'Reserved5', Format => 'string[76]', Unknown => 1 },
2048 => { Name => 'UserID', Format => 'string[32]' },
);
#------------------------------------------------------------------------------
# Extract EXIF information from a DPX image
# Inputs: 0) ExifTool object reference, 1) dirInfo reference
# Returns: 1 on success, 0 if this wasn't a valid DPX file
sub ProcessDPX($$)
{
my ($et, $dirInfo) = @_;
my $raf = $$dirInfo{RAF};
my $buff;
# verify this is a valid DPX file
return 0 unless $raf->Read($buff, 2080) == 2080;
return 0 unless $buff =~ /^(SDPX|XPDS)/;
SetByteOrder($1 eq 'SDPX' ? 'MM' : 'II');
$et->SetFileType(); # set the FileType tag
my $hdrLen = Get32u(\$buff,24) + Get32u(\$buff,28);
$hdrLen == 2048 or $et->Warn("Unexpected DPX header length ($hdrLen)");
my %dirInfo = (
DataPt => \$buff,
DirStart => 0,
DirLen => length($buff),
);
my $tagTablePtr = GetTagTable('Image::ExifTool::DPX::Main');
$et->ProcessDirectory(\%dirInfo, $tagTablePtr);
return 1;
}
1; # end
__END__
=head1 NAME
Image::ExifTool::DPX - Read DPX meta information
=head1 SYNOPSIS
This module is used by Image::ExifTool
=head1 DESCRIPTION
This module contains definitions required by Image::ExifTool to read
metadata from DPX (Digital Picture Exchange) images.
=head1 AUTHOR
Copyright 2003-2024, Phil Harvey (philharvey66 at gmail.com)
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://www.cineon.com/ff_draft.php>
=back
=head1 SEE ALSO
L<Image::ExifTool::TagNames/DPX Tags>,
L<Image::ExifTool(3pm)|Image::ExifTool>
=cut