325 lines
10 KiB
Perl
325 lines
10 KiB
Perl
|
#------------------------------------------------------------------------------
|
||
|
|
# File: OpenEXR.pm
|
||
|
|
#
|
||
|
|
# Description: Read OpenEXR meta information
|
||
|
|
#
|
||
|
|
# Revisions: 2011/12/10 - P. Harvey Created
|
||
|
|
#
|
||
|
|
# References: 1) http://www.openexr.com/
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
package Image::ExifTool::OpenEXR;
|
||
|
|
|
||
|
|
use strict;
|
||
|
|
use vars qw($VERSION);
|
||
|
|
use Image::ExifTool qw(:DataAccess :Utils);
|
||
|
|
|
||
|
|
$VERSION = '1.01';
|
||
|
|
|
||
|
|
# supported EXR value format types (other types are extracted as undef binary data)
|
||
|
|
my %formatType = (
|
||
|
|
box2f => 'float[4]',
|
||
|
|
box2i => 'int32s[4]',
|
||
|
|
chlist => 1,
|
||
|
|
chromaticities => 'float[8]',
|
||
|
|
compression => 'int8u',
|
||
|
|
double => 'double',
|
||
|
|
envmap => 'int8u',
|
||
|
|
float => 'float',
|
||
|
|
'int' => 'int32s',
|
||
|
|
keycode => 'int32s[7]',
|
||
|
|
lineOrder => 'int8u',
|
||
|
|
m33f => 'float[9]',
|
||
|
|
m44f => 'float[16]',
|
||
|
|
rational => 'rational64s',
|
||
|
|
string => 'string', # incorrect in specification! (no leading int)
|
||
|
|
stringvector => 1,
|
||
|
|
tiledesc => 1,
|
||
|
|
timecode => 'int32u[2]',
|
||
|
|
v2f => 'float[2]',
|
||
|
|
v2i => 'int32s[2]',
|
||
|
|
v3f => 'float[3]',
|
||
|
|
v3i => 'int32s[3]',
|
||
|
|
);
|
||
|
|
|
||
|
|
# OpenEXR tags
|
||
|
|
%Image::ExifTool::OpenEXR::Main = (
|
||
|
|
GROUPS => { 2 => 'Image' },
|
||
|
|
NOTES => q{
|
||
|
|
Information extracted from EXR images. See L<http://www.openexr.com/> for
|
||
|
|
the official specification.
|
||
|
|
},
|
||
|
|
_ver => { Name => 'EXRVersion' },
|
||
|
|
_lay => {
|
||
|
|
Name => 'Layout',
|
||
|
|
PrintHex => 1,
|
||
|
|
PrintConv => { 0 => 'Scan Lines', 0x200 => 'Tiles' },
|
||
|
|
},
|
||
|
|
adoptedNeutral => { },
|
||
|
|
altitude => {
|
||
|
|
Name => 'GPSAltitude',
|
||
|
|
Groups => { 2 => 'Location' },
|
||
|
|
PrintConv => q{
|
||
|
|
$val = int($val * 10) / 10;
|
||
|
|
return ($val =~ s/^-// ? "$val m Below" : "$val m Above") . " Sea Level";
|
||
|
|
},
|
||
|
|
},
|
||
|
|
aperture => { PrintConv => 'sprintf("%.1f",$val)' },
|
||
|
|
channels => { },
|
||
|
|
chromaticities => { },
|
||
|
|
capDate => {
|
||
|
|
Name => 'DateTimeOriginal',
|
||
|
|
Groups => { 2 => 'Time' },
|
||
|
|
PrintConv => '$self->ConvertDateTime($val)',
|
||
|
|
},
|
||
|
|
comments => { },
|
||
|
|
compression => {
|
||
|
|
PrintConvColumns => 2,
|
||
|
|
PrintConv => {
|
||
|
|
0 => 'None',
|
||
|
|
1 => 'RLE',
|
||
|
|
2 => 'ZIPS',
|
||
|
|
3 => 'ZIP',
|
||
|
|
4 => 'PIZ',
|
||
|
|
5 => 'PXR24',
|
||
|
|
6 => 'B44',
|
||
|
|
7 => 'B44A',
|
||
|
|
},
|
||
|
|
},
|
||
|
|
dataWindow => { },
|
||
|
|
displayWindow => { },
|
||
|
|
envmap => {
|
||
|
|
Name => 'EnvironmentMap',
|
||
|
|
PrintConv => {
|
||
|
|
0 => 'Latitude/Longitude',
|
||
|
|
1 => 'Cube',
|
||
|
|
},
|
||
|
|
},
|
||
|
|
expTime => {
|
||
|
|
Name => 'ExposureTime',
|
||
|
|
PrintConv => 'Image::ExifTool::Exif::PrintExposureTime($val)',
|
||
|
|
},
|
||
|
|
focus => {
|
||
|
|
Name => 'FocusDistance',
|
||
|
|
PrintConv => '"$val m"',
|
||
|
|
},
|
||
|
|
framesPerSecond => { },
|
||
|
|
keyCode => { },
|
||
|
|
isoSpeed => { Name => 'ISO' },
|
||
|
|
latitude => {
|
||
|
|
Name => 'GPSLatitude',
|
||
|
|
Groups => { 2 => 'Location' },
|
||
|
|
RawConv => 'require Image::ExifTool::GPS; $val', # to load Composite tags and routines
|
||
|
|
PrintConv => 'Image::ExifTool::GPS::ToDMS($self, $val, 1, "N")',
|
||
|
|
},
|
||
|
|
lineOrder => {
|
||
|
|
PrintConv => {
|
||
|
|
0 => 'Increasing Y',
|
||
|
|
1 => 'Decreasing Y',
|
||
|
|
2 => 'Random Y',
|
||
|
|
},
|
||
|
|
},
|
||
|
|
longitude => {
|
||
|
|
Name => 'GPSLongitude',
|
||
|
|
Groups => { 2 => 'Location' },
|
||
|
|
RawConv => 'require Image::ExifTool::GPS; $val', # to load Composite tags and routines
|
||
|
|
PrintConv => 'Image::ExifTool::GPS::ToDMS($self, $val, 1, "E")',
|
||
|
|
},
|
||
|
|
lookModTransform => { },
|
||
|
|
multiView => { },
|
||
|
|
owner => { Groups => { 2 => 'Author' } },
|
||
|
|
pixelAspectRatio => { },
|
||
|
|
preview => { },
|
||
|
|
renderingTransform => { },
|
||
|
|
screenWindowCenter => { },
|
||
|
|
screenWindowWidth => { },
|
||
|
|
tiles => { },
|
||
|
|
timeCode => { },
|
||
|
|
utcOffset => {
|
||
|
|
Name => 'TimeZone',
|
||
|
|
Groups => { 2 => 'Time' },
|
||
|
|
PrintConv => 'TimeZoneString($val / 60)',
|
||
|
|
},
|
||
|
|
whiteLuminance => { },
|
||
|
|
worldToCamera => { },
|
||
|
|
worldToNDC => { },
|
||
|
|
wrapmodes => { Name => 'WrapModes' },
|
||
|
|
xDensity => { Name => 'XResolution' },
|
||
|
|
# also observed:
|
||
|
|
# ilut
|
||
|
|
);
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Extract information from an OpenEXR file
|
||
|
|
# Inputs: 0) ExifTool object reference, 1) DirInfo reference
|
||
|
|
# Returns: 1 on success, 0 if this wasn't a valid OpenEXR file
|
||
|
|
sub ProcessEXR($$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo) = @_;
|
||
|
|
my $raf = $$dirInfo{RAF};
|
||
|
|
my $verbose = $et->Options('Verbose');
|
||
|
|
my $binary = $et->Options('Binary') || $verbose;
|
||
|
|
my ($buff, $buf2, $dim);
|
||
|
|
|
||
|
|
# verify this is a valid RIFF file
|
||
|
|
return 0 unless $raf->Read($buff, 8) == 8;
|
||
|
|
return 0 unless $buff =~ /^\x76\x2f\x31\x01/s;
|
||
|
|
$et->SetFileType();
|
||
|
|
SetByteOrder('II');
|
||
|
|
my $tagTablePtr = GetTagTable('Image::ExifTool::OpenEXR::Main');
|
||
|
|
|
||
|
|
# extract information from header
|
||
|
|
my $ver = unpack('x4V', $buff);
|
||
|
|
$et->HandleTag($tagTablePtr, '_ver', $ver & 0xff);
|
||
|
|
$et->HandleTag($tagTablePtr, '_lay', $ver & 0x200);
|
||
|
|
|
||
|
|
# extract attributes
|
||
|
|
for (;;) {
|
||
|
|
$raf->Read($buff, 68) or last;
|
||
|
|
last if $buff =~ /^\0/;
|
||
|
|
unless ($buff =~ /^([^\0]{1,31})\0([^\0]{1,31})\0(.{4})/sg) {
|
||
|
|
$et->Warn('EXR format error');
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
my ($tag, $type, $size) = ($1, $2, unpack('V', $3));
|
||
|
|
unless ($raf->Seek(pos($buff) - length($buff), 1)) {
|
||
|
|
$et->Warn('Seek error');
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
my $tagInfo = $et->GetTagInfo($tagTablePtr, $tag);
|
||
|
|
unless ($tagInfo) {
|
||
|
|
my $name = ucfirst $tag;
|
||
|
|
$name =~ tr/-_a-zA-Z0-9//dc;
|
||
|
|
if (length $name <= 1) {
|
||
|
|
if (length $name) {
|
||
|
|
$name = "Tag$name";
|
||
|
|
} else {
|
||
|
|
$name = 'Invalid';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$tagInfo = { Name => $name, WasAdded => 1 };
|
||
|
|
AddTagToTable($tagTablePtr, $tag, $tagInfo);
|
||
|
|
$et->VPrint(0, $$et{INDENT}, "[adding $tag]\n");
|
||
|
|
}
|
||
|
|
my ($val, $success);
|
||
|
|
my $format = $formatType{$type};
|
||
|
|
if ($format or $binary) {
|
||
|
|
$raf->Read($buff, $size) == $size and $success = 1;
|
||
|
|
if (not $format) {
|
||
|
|
$val = \$buff; # treat as undef binary data
|
||
|
|
} elsif ($format ne '1') {
|
||
|
|
# handle formats which map nicely into ExifTool format codes
|
||
|
|
if ($format =~ /^(\w+)\[?(\d*)/) {
|
||
|
|
my ($fmt, $cnt) = ($1, $2);
|
||
|
|
$cnt = $fmt eq 'string' ? $size : 1 unless $cnt;
|
||
|
|
$val = ReadValue(\$buff, 0, $fmt, $cnt, $size);
|
||
|
|
}
|
||
|
|
# handle other format types
|
||
|
|
} elsif ($type eq 'tiledesc') {
|
||
|
|
if ($size >= 9) {
|
||
|
|
my $x = Get32u(\$buff, 0);
|
||
|
|
my $y = Get32u(\$buff, 4);
|
||
|
|
my $mode = Get8u(\$buff, 8);
|
||
|
|
my $lvl = { 0 => 'One Level', 1 => 'MIMAP Levels', 2 => 'RIPMAP Levels' }->{$mode & 0x0f};
|
||
|
|
$lvl or $lvl = 'Unknown Levels (' . ($mode & 0xf) . ')';
|
||
|
|
my $rnd = { 0 => 'Round Down', 1 => 'Round Up' }->{$mode >> 4};
|
||
|
|
$rnd or $rnd = 'Unknown Rounding (' . ($mode >> 4) . ')';
|
||
|
|
$val = "${x}x$y; $lvl; $rnd";
|
||
|
|
}
|
||
|
|
} elsif ($type eq 'chlist') {
|
||
|
|
$val = [ ];
|
||
|
|
while ($buff =~ /\G([^\0]{1,31})\0(.{16})/sg) {
|
||
|
|
my ($str, $dat) = ($1, $2);
|
||
|
|
my ($pix,$lin,$x,$y) = unpack('VCx3VV', $dat);
|
||
|
|
$pix = { 0 => 'int8u', 1 => 'half', 2 => 'float' }->{$pix} || "unknown($pix)";
|
||
|
|
push @$val, "$str $pix" . ($lin ? ' linear' : '') . " $x $y";
|
||
|
|
}
|
||
|
|
} elsif ($type eq 'stringvector') {
|
||
|
|
$val = [ ];
|
||
|
|
my $pos = 0;
|
||
|
|
while ($pos + 4 <= length($buff)) {
|
||
|
|
my $len = Get32u(\$buff, $pos);
|
||
|
|
last if $pos + 4 + $len > length($buff);
|
||
|
|
push @$val, substr($buff, $pos + 4, $len);
|
||
|
|
$pos += 4 + $len;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$val = \$buff; # (shouldn't happen)
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
# avoid loading binary data
|
||
|
|
$val = \ "Binary data $size bytes";
|
||
|
|
$success = $raf->Seek($size, 1);
|
||
|
|
}
|
||
|
|
unless ($success) {
|
||
|
|
$et->Warn('Truncated or corrupted EXR file');
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
$val = '<bad>' unless defined $val;
|
||
|
|
|
||
|
|
# take image dimensions from dataWindow (with displayWindow as backup)
|
||
|
|
if (($tag eq 'dataWindow' or (not $dim and $tag eq 'displayWindow')) and
|
||
|
|
$val =~ /^(-?\d+) (-?\d+) (-?\d+) (-?\d+)$/)
|
||
|
|
{
|
||
|
|
$dim = [$3 - $1 + 1, $4 - $2 + 1];
|
||
|
|
}
|
||
|
|
if ($verbose) {
|
||
|
|
my $dataPt = ref $val ? $val : \$val,
|
||
|
|
$et->VerboseInfo($tag, $tagInfo,
|
||
|
|
Table => $tagTablePtr,
|
||
|
|
Value => $val,
|
||
|
|
Size => $size,
|
||
|
|
Format => $type,
|
||
|
|
DataPt => \$buff,
|
||
|
|
Addr => $raf->Tell() - $size,
|
||
|
|
);
|
||
|
|
}
|
||
|
|
$et->FoundTag($tagInfo, $val);
|
||
|
|
}
|
||
|
|
if ($dim) {
|
||
|
|
$et->FoundTag('ImageWidth', $$dim[0]);
|
||
|
|
$et->FoundTag('ImageHeight', $$dim[1]);
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
1; # end
|
||
|
|
|
||
|
|
__END__
|
||
|
|
|
||
|
|
=head1 NAME
|
||
|
|
|
||
|
|
Image::ExifTool::OpenEXR - Read OpenEXR meta information
|
||
|
|
|
||
|
|
=head1 SYNOPSIS
|
||
|
|
|
||
|
|
This module is used by Image::ExifTool
|
||
|
|
|
||
|
|
=head1 DESCRIPTION
|
||
|
|
|
||
|
|
This module contains definitions required by Image::ExifTool to extract meta
|
||
|
|
information from OpenEXR images.
|
||
|
|
|
||
|
|
=head1 AUTHOR
|
||
|
|
|
||
|
|
Copyright 2003-2016, 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://www.openexr.com/documentation.html>
|
||
|
|
|
||
|
|
=back
|
||
|
|
|
||
|
|
=head1 SEE ALSO
|
||
|
|
|
||
|
|
L<Image::ExifTool::TagNames/OpenEXR Tags>,
|
||
|
|
L<Image::ExifTool(3pm)|Image::ExifTool>
|
||
|
|
|
||
|
|
=cut
|
||
|
|
|