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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_Sanyo_tag($tag) {
switch($tag) {
case "0200": $tag = "SpecialMode";break;
case "0201": $tag = "Quality";break;
case "0202": $tag = "Macro";break;
case "0203": $tag = "Unknown";break;
case "0204": $tag = "DigiZoom";break;
case "0f00": $tag = "DataDump";break;
default: $tag = "unknown:".$tag;break;
}
return $tag;
}
//=================
// Formats Data for the data type
//====================================================================
function formatSanyoData($type,$tag,$intel,$data) {
if($type=="ASCII") {
} else if($type=="URATIONAL" || $type=="SRATIONAL") {
$data = unRational($data,$type,$intel);
} else if($type=="USHORT" || $type=="SSHORT" || $type=="ULONG" || $type=="SLONG" || $type=="FLOAT" || $type=="DOUBLE") {
$data = rational($data,$type,$intel);
if($tag=="0200") { //SpecialMode
if($data == 0) $data = gettext("Normal");
else $data = gettext("Unknown").": ".$data;
}
if($tag=="0201") { //Quality
if($data == 2) $data = gettext("High");
else $data = gettext("Unknown").": ".$data;
}
if($tag=="0202") { //Macro
if($data == 0) $data = gettext("Normal");
else $data = gettext("Unknown").": ".$data;
}
} else if($type=="UNDEFINED") {
} else {
$data = bin2hex($data);
if($intel==1) $data = intel2Moto($data);
}
return $data;
}
//=================
// Sanyo Special data section
//====================================================================
function parseSanyo($block,&$result,$seek, $globalOffset) {
if($result['Endien']=="Intel") $intel=1;
else $intel=0;
$model = $result['IFD0']['Model'];
$place=8; //current place
$offset=8;
//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);
$tag_name = lookup_Sanyo_tag($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);
$bytesofdata = validSize($size*hexdec($count));
//4 byte value of data or pointer to data
$value = substr($block,$place,4);$place+=4;
if($bytesofdata<=4) {
$data = substr($value,0,$bytesofdata);
} 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($tag!=0) {
$data = fread($seek, $bytesofdata);
} else if($v==-1) {
$result['Errors'] = $result['Errors']++;
}
}
$formated_data = formatSanyoData($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;
}
}
}
?>
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