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<?php
/**
* This file is licensed under the GPL as stated in Jake Olefsky's original
* code. Jake has given Horde permission to incorporate Exifer into our
* codebase.
*
* 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.horde.org/licenses/gpl
*
* The original Exifer library has been heavily modified and refactored. All
* modifications are
*
* Copyright 2003 Jake Olefsky
* Copyright 2009-2017 Horde LLC (http://www.horde.org/)
*
* @author Jake Olefsky <jake@olefsky.com>
* @author Michael J. Rubinsky <mrubinsk@horde.org>
* @author Jan Schneider <jan@horde.org>
* @category Horde
* @package Image
*/
/**
* Class for dealing with Exif data using a bundled PHP library based on the
* Exifer code written by and Copyright 2003 Jake Olefsky
*
* @see http://www.offsky.com/software/exif/index.php
* @author Jake Olefsky <jake@olefsky.com>
* @author Michael J. Rubinsky <mrubinsk@horde.org>
* @author Jan Schneider <jan@horde.org>
* @category Horde
* @copyright 2009-2017 Horde LLC
* @package Image
*/
class Horde_Image_Exif_Parser_Sanyo extends Horde_Image_Exif_Parser_Base
{
/**
*
* @param $tag
* @return unknown_type
*/
protected function _lookupTag($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;
}
/**
*
* @param $type
* @param $tag
* @param $intel
* @param $data
* @return unknown_type
*/
protected function _formatData($type, $tag, $intel, $data)
{
switch ($type) {
case 'ASCII':
case 'UNDEFINED':
break;
case 'URATIONAL':
case 'SRATIONAL':
$data = bin2hex($data);
if ($intel) {
$data = Horde_Image_Exif::intel2Moto($data);
}
$top = hexdec(substr($data, 8, 8));
$bottom = hexdec(substr($data, 0, 8));
if ($bottom) {
$data = $top / $bottom;
} elseif (!$top) {
$data = 0;
} else {
$data = $top . '/' . $bottom;
}
break;
case 'USHORT':
case 'SSHORT':
case 'ULONG':
case 'SLONG':
case 'FLOAT':
case 'DOUBLE':
$data = bin2hex($data);
if ($intel) {
$data = Horde_Image_Exif::intel2Moto($data);
}
$data = hexdec($data);
switch ($tag) {
case '0200':
//SpecialMode
$data = $data == 0 ? Horde_Image_Translation::t("Normal") : Horde_Image_Translation::t("Unknown") . ': ' . $data;
break;
case '0201':
//Quality
$data = $data == 2 ? Horde_Image_Translation::t("High") : Horde_Image_Translation::t("Unknown") . ': ' . $data;
break;
case '0202':
//Macro
$data = $data == 0 ? Horde_Image_Translation::t("Normal") : Horde_Image_Translation::t("Unknown") . ': ' . $data;
break;
}
break;
default:
$data = bin2hex($data);
if ($intel) {
$data = Horde_Image_Exif::intel2Moto($data);
}
}
return $data;
}
/**
*
* @param $block
* @param $result
* @param $seek
* @param $globalOffset
* @return unknown_type
*/
public function parse($block, &$result, $seek, $globalOffset)
{
$intel = $result['Endien']=='Intel';
$model = $result['IFD0']['Model'];
//current place
$place = 8;
$offset = 8;
//Get number of tags (2 bytes)
$num = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$num = Horde_Image_Exif::intel2Moto($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) {
$tag = Horde_Image_Exif::intel2Moto($tag);
}
$tag_name = $this->_lookupTag($tag);
//2 byte type
$type = bin2hex(substr($block, $place, 2));
$place += 2;
if ($intel) {
$type = Horde_Image_Exif::intel2Moto($type);
}
list($type, $size) = $this->_lookupType($type);
//4 byte count of number of data units
$count = bin2hex(substr($block, $place, 4));
$place += 4;
if ($intel) {
$count = Horde_Image_Exif::intel2Moto($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) {
$value = Horde_Image_Exif::intel2Moto($value);
}
//offsets are from TIFF header which is 12 bytes from the start
//of the file
if ($seek->seek($globalOffset + hexdec($value))) {
$data = $seek->substring(0, $bytesofdata);
} else {
$result['Errors'] = $result['Errors']++;
}
}
$formated_data = $this->_formatData($type, $tag, $intel, $data);
$result['SubIFD']['MakerNote'][$tag_name] = $formated_data;
}
}
}
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