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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_Olympus_tag($tag) {
+ switch($tag) {
+ case "0200": $tag = "SpecialMode";break;
+ case "0201": $tag = "JpegQual";break;
+ case "0202": $tag = "Macro";break;
+ case "0203": $tag = "Unknown1";break;
+ case "0204": $tag = "DigiZoom";break;
+ case "0205": $tag = "Unknown2";break;
+ case "0206": $tag = "Unknown3";break;
+ case "0207": $tag = "SoftwareRelease";break;
+ case "0208": $tag = "PictInfo";break;
+ case "0209": $tag = "CameraID";break;
+ case "0f00": $tag = "DataDump";break;
+
+ default: $tag = "unknown:".$tag;break;
+ }
+
+ return $tag;
+}
+
+//=================
+// Formats Data for the data type
+//====================================================================
+function formatOlympusData($type,$tag,$intel,$data) {
+ if($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=="0204") { //DigitalZoom
+ $data=$data."x";
+ }
+ if($tag=="0205") { //Unknown2
+ $data=$top."/".$bottom;
+ }
+ } else if($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($tag=="0201") { //JPEGQuality
+ if($data == 1) $data = "SQ";
+ else if($data == 2) $data = "HQ";
+ else if($data == 3) $data = "SHQ";
+ else $data = gettext("Unknown").": ".$data;
+ }
+ if($tag=="0202") { //Macro
+ if($data == 0) $data = "Normal";
+ else if($data == 1) $data = "Macro";
+ else $data = gettext("Unknown").": ".$data;
+ }
+ } else if($type=="UNDEFINED") {
+
+ } else {
+ $data = bin2hex($data);
+ if($intel==1) $data = intel2Moto($data);
+ }
+
+ return $data;
+}
+
+
+
+//==============================================================================
+// Olympus Special data section
+// - Updated by Zenphoto for new header tag in E-410/E-510/E-3 cameras. 2/24/2008
+//==============================================================================
+function parseOlympus($block, &$result, $seek, $globalOffset) {
+
+ if($result['Endien']=="Intel") $intel = 1;
+ else $intel = 0;
+
+ $model = $result['IFD0']['Model'];
+
+ // New header for new DSLRs - Check for it because the
+ // number of bytes that count the IFD fields differ in each case.
+ // Fixed by Zenphoto 2/24/08
+ $new = false;
+ if (substr($block, 0, 8) == "OLYMPUS\x00") {
+ $new = true;
+ } else if (substr($block, 0, 7) == "OLYMP\x00\x01"
+ || substr($block, 0, 7) == "OLYMP\x00\x02") {
+ $new = false;
+ } else {
+ // Header does not match known Olympus headers.
+ // This is not a valid OLYMPUS Makernote.
+ return false;
+ }
+
+ // Offset of IFD entry after Olympus header.
+ $place = 8;
+ $offset = 8;
+
+ // Get number of tags (1 or 2 bytes, depending on New or Old makernote)
+ $countfieldbits = $new ? 1 : 2;
+ // New makernote repeats 1-byte value twice, so increment $place by 2 in either case.
+ $num = bin2hex(substr($block, $place, $countfieldbits)); $place += 2;
+ if ($intel == 1) $num = intel2Moto($num);
+ $ntags = hexdec($num);
+ $result['SubIFD']['MakerNote']['MakerNoteNumTags'] = $ntags;
+
+ //loop thru all tags Each field is 12 bytes
+ for($i=0; $i < $ntags; $i++) {
+ //2 byte tag
+ $tag = bin2hex(substr($block, $place,2));
+ $place += 2;
+ if ($intel == 1) $tag = intel2Moto($tag);
+ $tag_name = lookup_Olympus_tag($tag);
+
+ //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);
+ $v = fseek($seek,$globalOffset+hexdec($value)); //offsets are from TIFF header which is 12 bytes from the start of the file
+ if(isset($GLOBALS['exiferFileSize']) && $v == 0 && $bytesofdata < $GLOBALS['exiferFileSize']) {
+ $data = fread($seek, $bytesofdata);
+ } else {
+ $result['Errors'] = $result['Errors']++;
+ $data = '';
+ }
+ }
+ $formated_data = formatOlympusData($type,$tag,$intel,$data);
+
+ if($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;
+ }
+ }
+}
+
+
+?> \ No newline at end of file
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