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<?php
//================================================================================================
//================================================================================================
//================================================================================================
/*
Exifer
Extracts EXIF information from digital photos.
Copyright © 2003 Jake Olefsky
http://www.offsky.com/software/exif/index.php
jake@olefsky.com
Please see exif.php for the complete information about this software.
------------
This program is free software; you can redistribute it and/or modify it under the terms of
the GNU General Public License as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details. http://www.gnu.org/copyleft/gpl.html
*/
//================================================================================================
//================================================================================================
//================================================================================================
//=================
// Looks up the name of the tag for the MakerNote (Depends on Manufacturer)
//====================================================================
function lookup_Nikon_tag($tag,$model) {
if($model==0) {
switch($tag) {
case "0003": $tag = "Quality";break;
case "0004": $tag = "ColorMode";break;
case "0005": $tag = "ImageAdjustment";break;
case "0006": $tag = "CCDSensitivity";break;
case "0007": $tag = "WhiteBalance";break;
case "0008": $tag = "Focus";break;
case "0009": $tag = "Unknown2";break;
case "000a": $tag = "DigitalZoom";break;
case "000b": $tag = "Converter";break;
default: $tag = "unknown:".$tag;break;
}
} else if($model==1) {
switch($tag) {
case "0002": $tag = "ISOSetting";break;
case "0003": $tag = "ColorMode";break;
case "0004": $tag = "Quality";break;
case "0005": $tag = "Whitebalance";break;
case "0006": $tag = "ImageSharpening";break;
case "0007": $tag = "FocusMode";break;
case "0008": $tag = "FlashSetting";break;
case "0009": $tag = "FlashMode";break;
case "000b": $tag = "WhiteBalanceFine";break;
case "000f": $tag = "ISOSelection";break;
case "0013": $tag = "ISOSelection2";break;
case "0080": $tag = "ImageAdjustment";break;
case "0081": $tag = "ToneCompensation";break;
case "0082": $tag = "Adapter";break;
case "0083": $tag = "LensType";break;
case "0084": $tag = "LensInfo";break;
case "0085": $tag = "ManualFocusDistance";break;
case "0086": $tag = "DigitalZoom";break;
case "0087": $tag = "FlashUsed";break;
case "0088": $tag = "AFFocusPosition";break;
case "008d": $tag = "ColorMode";break;
case "0090": $tag = "LightType";break;
case "0094": $tag = "Saturation";break;
case "0095": $tag = "NoiseReduction";break;
case "0010": $tag = "DataDump";break;
default: $tag = "unknown:".$tag;break;
}
}
return $tag;
}
//=================
// Formats Data for the data type
//====================================================================
function formatNikonData($type,$tag,$intel,$model,$data) {
if($type=="ASCII") {
} else if($type=="URATIONAL" || $type=="SRATIONAL") {
$data = bin2hex($data);
if($intel==1) $data = intel2Moto($data);
$top = hexdec(substr($data,8,8));
$bottom = hexdec(substr($data,0,8));
if($bottom!=0) $data=$top/$bottom;
else if($top==0) $data = 0;
else $data=$top."/".$bottom;
if($tag=="0085" && $model==1) { //ManualFocusDistance
$data=$data." m";
}
if($tag=="0086" && $model==1) { //DigitalZoom
$data=$data."x";
}
if($tag=="000a" && $model==0) { //DigitalZoom
$data=$data."x";
}
} else if($type=="USHORT" || $type=="SSHORT" || $type=="ULONG" || $type=="SLONG" || $type=="FLOAT" || $type=="DOUBLE") {
$data = bin2hex($data);
if($intel==1) $data = intel2Moto($data);
$data=hexdec($data);
if($tag=="0003" && $model==0) { //Quality
if($data == 1) $data = "VGA Basic";
else if($data == 2) $data = "VGA Normal";
else if($data == 3) $data = "VGA Fine";
else if($data == 4) $data = "SXGA Basic";
else if($data == 5) $data = "SXGA Normal";
else if($data == 6) $data = "SXGA Fine";
else $data = "Unknown: ".$data;
}
if($tag=="0004" && $model==0) { //Color
if($data == 1) $data = "Color";
else if($data == 2) $data = "Monochrome";
else $data = "Unknown: ".$data;
}
if($tag=="0005" && $model==0) { //Image Adjustment
if($data == 0) $data = "Normal";
else if($data == 1) $data = "Bright+";
else if($data == 2) $data = "Bright-";
else if($data == 3) $data = "Contrast+";
else if($data == 4) $data = "Contrast-";
else $data = "Unknown: ".$data;
}
if($tag=="0006" && $model==0) { //CCD Sensitivity
if($data == 0) $data = "ISO-80";
else if($data == 2) $data = "ISO-160";
else if($data == 4) $data = "ISO-320";
else if($data == 5) $data = "ISO-100";
else $data = "Unknown: ".$data;
}
if($tag=="0007" && $model==0) { //White Balance
if($data == 0) $data = "Auto";
else if($data == 1) $data = "Preset";
else if($data == 2) $data = "Daylight";
else if($data == 3) $data = "Incandescense";
else if($data == 4) $data = "Flourescence";
else if($data == 5) $data = "Cloudy";
else if($data == 6) $data = "SpeedLight";
else $data = "Unknown: ".$data;
}
if($tag=="000b" && $model==0) { //Converter
if($data == 0) $data = "None";
else if($data == 1) $data = "Fisheye";
else $data = "Unknown: ".$data;
}
} else if($type=="UNDEFINED") {
if($tag=="0001" && $model==1) { //Unknown (Version?)
$data=$data/100;
}
if($tag=="0088" && $model==1) { //AF Focus Position
$temp = "Center";
$data = bin2hex($data);
$data = str_replace("01","Top",$data);
$data = str_replace("02","Bottom",$data);
$data = str_replace("03","Left",$data);
$data = str_replace("04","Right",$data);
$data = str_replace("00","",$data);
if(strlen($data)==0) $data = $temp;
}
} else {
$data = bin2hex($data);
if($intel==1) $data = intel2Moto($data);
if($tag=="0083" && $model==1) { //Lens Type
$data = hexdec(substr($data,0,2));
if($data == 0) $data = "AF non D";
else if($data == 1) $data = "Manual";
else if($data == 2) $data = "AF-D or AF-S";
else if($data == 6) $data = "AF-D G";
else if($data == 10) $data = "AF-D VR";
else $data = "Unknown: ".$data;
}
if($tag=="0087" && $model==1) { //Flash type
$data = hexdec(substr($data,0,2));
if($data == 0) $data = "Did Not Fire";
else if($data == 4) $data = "Unknown";
else if($data == 7) $data = "External";
else if($data == 9) $data = "On Camera";
else $data = "Unknown: ".$data;
}
}
return $data;
}
//=================
// Nikon Special data section
//====================================================================
function parseNikon($block,&$result) {
if($result['Endien']=="Intel") $intel=1;
else $intel=0;
$model = $result['IFD0']['Model'];
//these 6 models start with "Nikon". Other models dont.
if($model=="E700\0" || $model=="E800\0" || $model=="E900\0" || $model=="E900S\0" || $model=="E910\0" || $model=="E950\0") {
$place=8; //current place
$model = 0;
//Get number of tags (2 bytes)
$num = bin2hex(substr($block,$place,2));$place+=2;
if($intel==1) $num = intel2Moto($num);
$result['SubIFD']['MakerNote']['MakerNoteNumTags'] = hexdec($num);
//loop thru all tags Each field is 12 bytes
for($i=0;$i<hexdec($num);$i++) {
//2 byte tag
$tag = bin2hex(substr($block,$place,2));$place+=2;
if($intel==1) $tag = intel2Moto($tag);
$tag_name = lookup_Nikon_tag($tag, $model);
//2 byte type
$type = bin2hex(substr($block,$place,2));$place+=2;
if($intel==1) $type = intel2Moto($type);
lookup_type($type,$size);
//4 byte count of number of data units
$count = bin2hex(substr($block,$place,4));$place+=4;
if($intel==1) $count = intel2Moto($count);
$bytesofdata = $size*hexdec($count);
//4 byte value of data or pointer to data
$value = substr($block,$place,4);$place+=4;
//if tag is 0002 then its the ASCII value which we know is at 140 so calc offset
//THIS HACK ONLY WORKS WITH EARLY NIKON MODELS
if($tag=="0002") $offset = hexdec($value)-140;
if($bytesofdata<=4) {
$data = $value;
} else {
$value = bin2hex($value);
if($intel==1) $value = intel2Moto($value);
$data = substr($block,hexdec($value)-$offset,$bytesofdata*2);
}
$formated_data = formatNikonData($type,$tag,$intel,$model,$data);
if($result['VerboseOutput']==1) {
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
$result['SubIFD']['MakerNote'][$tag_name."_Verbose"]['RawData'] = $data;
$result['SubIFD']['MakerNote'][$tag_name."_Verbose"]['Type'] = $type;
$result['SubIFD']['MakerNote'][$tag_name."_Verbose"]['Bytes'] = $bytesofdata;
} else {
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
}
} else {
$place=0;//current place
$model = 1;
$nikon = substr($block,$place,8);$place+=8;
$endien = substr($block,$place,4);$place+=4;
//2 bytes of 0x002a
$tag = bin2hex(substr($block,$place,2));$place+=2;
//Then 4 bytes of offset to IFD0 (usually 8 which includes all 8 bytes of TIFF header)
$offset = bin2hex(substr($block,$place,4));$place+=4;
if($intel==1) $offset = intel2Moto($offset);
if(hexdec($offset)>8) $place+=$offset-8;
//Get number of tags (2 bytes)
$num = bin2hex(substr($block,$place,2));$place+=2;
if($intel==1) $num = intel2Moto($num);
//loop thru all tags Each field is 12 bytes
for($i=0;$i<hexdec($num);$i++) {
//2 byte tag
$tag = bin2hex(substr($block,$place,2));$place+=2;
if($intel==1) $tag = intel2Moto($tag);
$tag_name = lookup_Nikon_tag($tag, $model);
//2 byte type
$type = bin2hex(substr($block,$place,2));$place+=2;
if($intel==1) $type = intel2Moto($type);
lookup_type($type,$size);
//4 byte count of number of data units
$count = bin2hex(substr($block,$place,4));$place+=4;
if($intel==1) $count = intel2Moto($count);
$bytesofdata = $size*hexdec($count);
//4 byte value of data or pointer to data
$value = substr($block,$place,4);$place+=4;
if($bytesofdata<=4) {
$data = $value;
} else {
$value = bin2hex($value);
if($intel==1) $value = intel2Moto($value);
$data = substr($block,hexdec($value)+hexdec($offset)+2,$bytesofdata);
}
$formated_data = formatNikonData($type,$tag,$intel,$model,$data);
if($result['VerboseOutput']==1) {
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
if($type=="URATIONAL" || $type=="SRATIONAL" || $type=="USHORT" || $type=="SSHORT" || $type=="ULONG" || $type=="SLONG" || $type=="FLOAT" || $type=="DOUBLE") {
$data = bin2hex($data);
if($intel==1) $data = intel2Moto($data);
}
$result['SubIFD']['MakerNote'][$tag_name."_Verbose"]['RawData'] = $data;
$result['SubIFD']['MakerNote'][$tag_name."_Verbose"]['Type'] = $type;
$result['SubIFD']['MakerNote'][$tag_name."_Verbose"]['Bytes'] = $bytesofdata;
} else {
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
}
}
}
?>
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