189 lines
6.3 KiB
PHP
189 lines
6.3 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
|
||
//================================================================================================
|
||
//================================================================================================
|
||
/*
|
||
Exifer
|
||
Extracts EXIF information from digital photos.
|
||
|
||
Copyright <20> 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") {
|
||
$data = unRational($data,$type,$intel);
|
||
if($intel==1) $data = intel2Moto($data);
|
||
|
||
if($tag=="0204") { //DigitalZoom
|
||
$data=$data."x";
|
||
}
|
||
if($tag=="0205") { //Unknown2
|
||
|
||
}
|
||
} else if($type=="USHORT" || $type=="SSHORT" || $type=="ULONG" || $type=="SLONG" || $type=="FLOAT" || $type=="DOUBLE") {
|
||
$data = rational($data,$type,$intel);
|
||
|
||
if($tag=="0201") { //JPEGQuality
|
||
if($data == 1) $data = "SQ";
|
||
else if($data == 2) $data = "HQ";
|
||
else if($data == 3) $data = "SHQ";
|
||
else $data = (string) t("Unknown").": ".$data;
|
||
}
|
||
if($tag=="0202") { //Macro
|
||
if($data == 0) $data = "Normal";
|
||
else if($data == 1) $data = "Macro";
|
||
else $data = (string) t("Unknown").": ".$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;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
?>
|