158 lines
5.0 KiB
PHP
158 lines
5.0 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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//================================================================================================
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//================================================================================================
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/*
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Exifer
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Extracts EXIF information from digital photos.
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Copyright <20> 2003 Jake Olefsky
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http://www.offsky.com/software/exif/index.php
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jake@olefsky.com
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Please see exif.php for the complete information about this software.
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------------
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This program is free software; you can redistribute it and/or modify it under the terms of
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the GNU General Public License as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details. http://www.gnu.org/copyleft/gpl.html
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*/
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//================================================================================================
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//================================================================================================
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//================================================================================================
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//=================
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// Looks up the name of the tag for the MakerNote (Depends on Manufacturer)
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//====================================================================
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function lookup_Sanyo_tag($tag) {
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switch($tag) {
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case "0200": $tag = "SpecialMode";break;
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case "0201": $tag = "Quality";break;
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case "0202": $tag = "Macro";break;
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case "0203": $tag = "Unknown";break;
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case "0204": $tag = "DigiZoom";break;
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case "0f00": $tag = "DataDump";break;
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default: $tag = "unknown:".$tag;break;
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}
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return $tag;
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}
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//=================
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// Formats Data for the data type
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//====================================================================
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function formatSanyoData($type,$tag,$intel,$data) {
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if($type=="ASCII") {
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} else if($type=="URATIONAL" || $type=="SRATIONAL") {
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$data = unRational($data,$type,$intel);
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} else if($type=="USHORT" || $type=="SSHORT" || $type=="ULONG" || $type=="SLONG" || $type=="FLOAT" || $type=="DOUBLE") {
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$data = rational($data,$type,$intel);
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if($tag=="0200") { //SpecialMode
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if($data == 0) $data = (string) t("Normal");
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else $data = (string) t("Unknown").": ".$data;
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}
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if($tag=="0201") { //Quality
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if($data == 2) $data = (string) t("High");
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else $data = (string) t("Unknown").": ".$data;
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}
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if($tag=="0202") { //Macro
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if($data == 0) $data = (string) t("Normal");
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else $data = (string) t("Unknown").": ".$data;
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}
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} else if($type=="UNDEFINED") {
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} else {
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$data = bin2hex($data);
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if($intel==1) $data = intel2Moto($data);
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}
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return $data;
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}
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//=================
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// Sanyo Special data section
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//====================================================================
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function parseSanyo($block,&$result,$seek, $globalOffset) {
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if($result['Endien']=="Intel") $intel=1;
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else $intel=0;
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$model = $result['IFD0']['Model'];
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$place=8; //current place
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$offset=8;
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//Get number of tags (2 bytes)
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$num = bin2hex(substr($block,$place,2));$place+=2;
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if($intel==1) $num = intel2Moto($num);
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$result['SubIFD']['MakerNote']['MakerNoteNumTags'] = hexdec($num);
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//loop thru all tags Each field is 12 bytes
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for($i=0;$i<hexdec($num);$i++) {
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//2 byte tag
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$tag = bin2hex(substr($block,$place,2));$place+=2;
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if($intel==1) $tag = intel2Moto($tag);
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$tag_name = lookup_Sanyo_tag($tag);
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//2 byte type
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$type = bin2hex(substr($block,$place,2));$place+=2;
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if($intel==1) $type = intel2Moto($type);
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lookup_type($type,$size);
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//4 byte count of number of data units
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$count = bin2hex(substr($block,$place,4));$place+=4;
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if($intel==1) $count = intel2Moto($count);
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$bytesofdata = $size*hexdec($count);
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//4 byte value of data or pointer to data
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$value = substr($block,$place,4);$place+=4;
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if($bytesofdata<=4) {
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$data = $value;
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} else {
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$value = bin2hex($value);
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if($intel==1) $value = intel2Moto($value);
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$v = fseek($seek,$globalOffset+hexdec($value)); //offsets are from TIFF header which is 12 bytes from the start of the file
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if($v==0) {
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$data = fread($seek, $bytesofdata);
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} else if($v==-1) {
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$result['Errors'] = $result['Errors']++;
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}
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}
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$formated_data = formatSanyoData($type,$tag,$intel,$data);
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if($result['VerboseOutput']==1) {
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$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
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if($type=="URATIONAL" || $type=="SRATIONAL" || $type=="USHORT" || $type=="SSHORT" || $type=="ULONG" || $type=="SLONG" || $type=="FLOAT" || $type=="DOUBLE") {
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$data = bin2hex($data);
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if($intel==1) $data = intel2Moto($data);
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}
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$result['SubIFD']['MakerNote'][$tag_name."_Verbose"]['RawData'] = $data;
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$result['SubIFD']['MakerNote'][$tag_name."_Verbose"]['Type'] = $type;
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$result['SubIFD']['MakerNote'][$tag_name."_Verbose"]['Bytes'] = $bytesofdata;
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} else {
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$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
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}
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}
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}
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?>
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