#------------------------------------------------------------------------------
# File: MinoltaRaw.pm
#
# Description: Read/write Konica-Minolta RAW (MRW) meta information
#
# Revisions: 03/11/2006 - P. Harvey Split out from Minolta.pm
#
# References: 1) http://www.cybercom.net/~dcoffin/dcraw/
# 2) http://www.chauveau-central.net/mrw-format/
#------------------------------------------------------------------------------
package Image::ExifTool::MinoltaRaw;
use strict;
use vars qw($VERSION);
use Image::ExifTool qw(:DataAccess :Utils);
$VERSION = '1.04';
sub ProcessMRW($$;$);
# Minolta MRW tags
%Image::ExifTool::MinoltaRaw::Main = (
GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
PROCESS_PROC => \&Image::ExifTool::MinoltaRaw::ProcessMRW,
NOTES => 'These tags are used in Minolta RAW format (MRW) images.',
"\0TTW" => { # TIFF Tags
Name => 'MinoltaTTW',
SubDirectory => {
TagTable => 'Image::ExifTool::Exif::Main',
# this EXIF information starts with a TIFF header
ProcessProc => \&Image::ExifTool::ProcessTIFF,
WriteProc => \&Image::ExifTool::WriteTIFF,
},
},
"\0PRD" => { # Raw Picture Dimensions
Name => 'MinoltaPRD',
SubDirectory => { TagTable => 'Image::ExifTool::MinoltaRaw::PRD' },
},
"\0WBG" => { # White Balance Gains
Name => 'MinoltaWBG',
SubDirectory => { TagTable => 'Image::ExifTool::MinoltaRaw::WBG' },
},
"\0RIF" => { # Requested Image Format
Name => 'MinoltaRIF',
SubDirectory => { TagTable => 'Image::ExifTool::MinoltaRaw::RIF' },
},
# "\0CSA" is padding
);
# Minolta MRW PRD information (ref 2)
%Image::ExifTool::MinoltaRaw::PRD = (
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
WRITE_PROC => \&Image::ExifTool::WriteBinaryData,
CHECK_PROC => \&Image::ExifTool::CheckBinaryData,
WRITABLE => 1,
GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
FIRST_ENTRY => 0,
0 => {
Name => 'FirmwareID',
Format => 'string[8]',
},
8 => {
Name => 'SensorHeight',
Format => 'int16u',
},
10 => {
Name => 'SensorWidth',
Format => 'int16u',
},
12 => {
Name => 'ImageHeight',
Format => 'int16u',
},
14 => {
Name => 'ImageWidth',
Format => 'int16u',
},
16 => {
Name => 'RawDepth',
Format => 'int8u',
},
17 => {
Name => 'BitDepth',
Format => 'int8u',
},
18 => {
Name => 'StorageMethod',
Format => 'int8u',
PrintConv => {
82 => 'Padded',
89 => 'Linear',
},
},
23 => {
Name => 'BayerPattern',
Format => 'int8u',
PrintConv => {
1 => 'RGGB',
4 => 'GBRG',
},
},
);
# Minolta MRW WBG information (ref 2)
%Image::ExifTool::MinoltaRaw::WBG = (
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
WRITE_PROC => \&Image::ExifTool::WriteBinaryData,
CHECK_PROC => \&Image::ExifTool::CheckBinaryData,
WRITABLE => 1,
GROUPS => { 0 => 'MakerNotes', 2 => 'Camera' },
FIRST_ENTRY => 0,
0 => {
Name => 'WBScale',
Format => 'int8u[4]',
},
4 => {
Name => 'WBLevels',
Format => 'int16u[4]',
},
);
# Minolta MRW RIF information (ref 2)
%Image::ExifTool::MinoltaRaw::RIF = (
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
WRITE_PROC => \&Image::ExifTool::WriteBinaryData,
CHECK_PROC => \&Image::ExifTool::CheckBinaryData,
WRITABLE => 1,
GROUPS => { 0 => 'MakerNotes', 2 => 'Image' },
FIRST_ENTRY => 0,
1 => {
Name => 'Saturation',
Format => 'int8s',
},
2 => {
Name => 'Contrast',
Format => 'int8s',
},
3 => {
Name => 'Sharpness',
Format => 'int8s',
},
4 => {
Name => 'WBMode',
PrintConv => 'Image::ExifTool::MinoltaRaw::ConvertWBMode($val)',
},
5 => {
Name => 'ProgramMode',
PrintConv => {
0 => 'None',
1 => 'Portrait',
2 => 'Text',
3 => 'Night Portrait',
4 => 'Sunset',
5 => 'Sports',
},
},
6 => {
Name => 'ISOSetting',
ValueConv => '2 ** (($val-48)/8) * 100',
ValueConvInv => '48 + 8*log($val/100)/log(2)',
PrintConv => 'int($val + 0.5)',
PrintConvInv => '$val',
},
7 => {
Name => 'ColorMode',
PrintHex => 1,
PrintConv => {
0 => 'Normal',
1 => 'Black & White',
2 => 'Vivid color',
3 => 'Solarization',
4 => 'Adobe RGB',
13 => 'Natural sRGB',
14 => 'Natural+ sRGB',
0x84 => 'Adobe RGB', # what does the high bit mean?
},
},
56 => {
Name => 'ColorFilter',
Format => 'int8s',
},
57 => 'BWFilter',
58 => {
Name => 'ZoneMatching',
PrintConv => {
0 => 'ISO Setting Used',
1 => 'High Key',
2 => 'Low Key',
},
},
59 => {
Name => 'Hue',
Format => 'int8s',
},
60 => {
Name => 'ColorTemperature',
ValueConv => '$val * 100',
ValueConvInv => '$val / 100',
},
);
#------------------------------------------------------------------------------
# PrintConv for WBMode
sub ConvertWBMode($)
{
my $val = shift;
my %mrwWB = (
0 => 'Auto',
1 => 'Daylight',
2 => 'Cloudy',
3 => 'Tungsten',
4 => 'Flash/Fluorescent',
5 => 'Fluorescent',
6 => 'Shade',
7 => 'User 1',
8 => 'User 2',
9 => 'User 3',
10 => 'Temperature',
);
my $lo = $val & 0x0f;
my $wbstr = $mrwWB{$lo} || "Unknown ($lo)";
my $hi = $val >> 4;
$wbstr .= ' (' . ($hi - 8) . ')' if $hi >= 6 and $hi <=12;
return $wbstr;
}
#------------------------------------------------------------------------------
# Read or write Minolta MRW file
# Inputs: 0) ExifTool object reference, 1) dirInfo reference
# Returns: 1 on success, 0 if this wasn't a valid MRW file, or -1 on write error
# Notes: File pointer must be set to start of MRW in RAF upon entry
sub ProcessMRW($$;$)
{
my ($exifTool, $dirInfo, $tagTablePtr) = @_;
my $raf = $$dirInfo{RAF};
my $outfile = $$dirInfo{OutFile};
my $verbose = $exifTool->Options('Verbose');
my $out = $exifTool->Options('TextOut');
my ($data, $err, $outBuff);
if ($$dirInfo{DataPt}) {
# make a RAF object for MRW information extracted from other file types
$raf = new File::RandomAccess($$dirInfo{DataPt});
# MRW information in DNG images may not start at beginning of data block
$raf->Seek($$dirInfo{DirStart}, 0) if $$dirInfo{DirStart};
}
$raf->Read($data,8) == 8 or return 0;
# "\0MRM" for big-endian (MRW images), and
# "\0MRI" for little-endian (MRWInfo in ARW images)
$data =~ /^\0MR([MI])/ or return 0;
SetByteOrder($1 . $1);
$exifTool->SetFileType() unless $exifTool->{VALUE}->{FileType};
$tagTablePtr = GetTagTable('Image::ExifTool::MinoltaRaw::Main');
if ($outfile) {
$exifTool->InitWriteDirs('TIFF'); # use same write dirs as TIFF
$outBuff = '';
}
my $pos = $raf->Tell();
my $offset = Get32u(\$data, 4) + $pos;
my $rtnVal = 1;
$verbose and printf $out " [MRW Data Offset: 0x%x]\n", $offset;
# loop through MRW segments (ref 1)
while ($pos < $offset) {
$raf->Read($data,8) == 8 or $err = 1, last;
$pos += 8;
my $tag = substr($data, 0, 4);
my $len = Get32u(\$data, 4);
if ($verbose) {
print $out "MRW ",$exifTool->Printable($tag)," segment ($len bytes):\n";
if ($verbose > 2) {
$raf->Read($data,$len) == $len and $raf->Seek($pos,0) or $err = 1, last;
my %parms = (Addr => $pos, Out => $out);
$parms{MaxLen} = 96 unless $verbose > 3;
Image::ExifTool::HexDump(\$data,undef,%parms);
}
}
my $tagInfo = $exifTool->GetTagInfo($tagTablePtr, $tag);
if ($tagInfo and $$tagInfo{SubDirectory}) {
my $subTable = GetTagTable($tagInfo->{SubDirectory}->{TagTable});
my $buff;
$raf->Read($buff, $len) == $len or $err = 1, last;
my %subdirInfo = (
DataPt => \$buff,
DataLen => $len,
DataPos => $pos,
DirStart => 0,
DirLen => $len,
DirName => $$tagInfo{Name},
Parent => 'MRW',
NoTiffEnd => 1, # no end-of-TIFF check
);
if ($outfile) {
my $writeProc = $tagInfo->{SubDirectory}->{WriteProc};
my $val = $exifTool->WriteDirectory(\%subdirInfo, $subTable, $writeProc);
if (defined $val and length $val) {
# pad to an even 4 bytes (can't hurt, and it seems to be the standard)
$val .= "\0" x (4 - (length($val) & 0x03)) if length($val) & 0x03;
$outBuff .= $tag . Set32u(length $val) . $val;
} elsif (not defined $val) {
$outBuff .= $data . $buff; # copy over original information
}
} else {
my $processProc = $tagInfo->{SubDirectory}->{ProcessProc};
$exifTool->ProcessDirectory(\%subdirInfo, $subTable, $processProc);
}
} elsif ($outfile) {
# add this segment to the output buffer
my $buff;
$raf->Read($buff, $len) == $len or $err = 1, last;
$outBuff .= $data . $buff;
} else {
# skip this segment
$raf->Seek($pos+$len, 0) or $err = 1, last;
}
$pos += $len;
}
$pos == $offset or $err = 1; # meta information length check
if ($outfile) {
# write the file header then the buffered meta information
Write($outfile, "\0MRM", Set32u(length $outBuff), $outBuff) or $rtnVal = -1;
# copy over image data
while ($raf->Read($outBuff, 65536)) {
Write($outfile, $outBuff) or $rtnVal = -1;
}
}
$err and $exifTool->Error("MRW format error");
return $rtnVal;
}
1; # end
__END__
=head1 NAME
Image::ExifTool::MinoltaRaw - Read/write Konica-Minolta RAW (MRW) information
=head1 SYNOPSIS
This module is loaded automatically by Image::ExifTool when required.
=head1 DESCRIPTION
This module contains definitions required by Image::ExifTool to read and
write Konica-Minolta RAW (MRW) images.
=head1 AUTHOR
Copyright 2003-2008, 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
=item L
=back
=head1 SEE ALSO
L,
L,
L
=cut