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authorsembrestels <sembrestels@riseup.net>2011-10-13 15:23:11 +0200
committersembrestels <sembrestels@riseup.net>2011-10-13 15:23:11 +0200
commit74bd6999c5e5c23ebbf90dbb6bdaabbddd7594cf (patch)
tree834c120d692be288f261bcae169eedd3d6b31d74 /lib/dokuwiki/inc/JpegMeta.php
parentf8be8643f0faadb2c0ce87d553b7b9d569af5afd (diff)
downloadelgg-74bd6999c5e5c23ebbf90dbb6bdaabbddd7594cf.tar.gz
elgg-74bd6999c5e5c23ebbf90dbb6bdaabbddd7594cf.tar.bz2
Rename lib/dokuwiki to vendors/dokuwiki
Diffstat (limited to 'lib/dokuwiki/inc/JpegMeta.php')
-rw-r--r--lib/dokuwiki/inc/JpegMeta.php3116
1 files changed, 0 insertions, 3116 deletions
diff --git a/lib/dokuwiki/inc/JpegMeta.php b/lib/dokuwiki/inc/JpegMeta.php
deleted file mode 100644
index cb1d7d694..000000000
--- a/lib/dokuwiki/inc/JpegMeta.php
+++ /dev/null
@@ -1,3116 +0,0 @@
-<?php
-/**
- * JPEG metadata reader/writer
- *
- * @license PHP license 2.0 (http://www.php.net/license/2_02.txt)
- * @link http://www.zonageek.com/software/php/jpeg/index.php
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- * @author Andreas Gohr <andi@splitbrain.org>
- * @author Hakan Sandell <hakan.sandell@mydata.se>
- * @todo Add support for Maker Notes, Extend for GIF and PNG metadata
- */
-
-// This class is a modified and enhanced version of the JPEG class by
-// Sebastian Delmont. Original Copyright notice follows:
-//
-// +----------------------------------------------------------------------+
-// | PHP version 4.0 |
-// +----------------------------------------------------------------------+
-// | Copyright (c) 1997, 1998, 1999, 2000, 2001 The PHP Group |
-// +----------------------------------------------------------------------+
-// | This source file is subject to version 2.0 of the PHP license, |
-// | that is bundled with this package in the file LICENSE, and is |
-// | available at through the world-wide-web at |
-// | http://www.php.net/license/2_02.txt. |
-// | If you did not receive a copy of the PHP license and are unable to |
-// | obtain it through the world-wide-web, please send a note to |
-// | license@php.net so we can mail you a copy immediately. |
-// +----------------------------------------------------------------------+
-// | Authors: Sebastian Delmont <sdelmont@zonageek.com> |
-// +----------------------------------------------------------------------+
-
-class JpegMeta
-{
- var $_fileName;
- var $_fp = null;
- var $_type = 'unknown';
-
- var $_markers;
- var $_info;
-
-
- /**
- * Constructor
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function JpegMeta($fileName)
- {
-
- $this->_fileName = $fileName;
-
- $this->_fp = null;
- $this->_type = 'unknown';
-
- unset($this->_info);
- unset($this->_markers);
- }
-
- /**
- * Returns all gathered info as multidim array
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function & getRawInfo()
- {
- $this->_parseAll();
-
- if ($this->_markers == null) {
- return false;
- }
-
- return $this->_info;
- }
-
- /**
- * Returns basic image info
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function & getBasicInfo()
- {
- $this->_parseAll();
-
- $info = array();
-
- if ($this->_markers == null) {
- return false;
- }
-
- $info['Name'] = $this->_info['file']['Name'];
- if (isset($this->_info['file']['Url'])) {
- $info['Url'] = $this->_info['file']['Url'];
- $info['NiceSize'] = "???KB";
- }
- else {
- $info['Size'] = $this->_info['file']['Size'];
- $info['NiceSize'] = $this->_info['file']['NiceSize'];
- }
-
- if (@isset($this->_info['sof']['Format'])) {
- $info['Format'] = $this->_info['sof']['Format'] . " JPEG";
- }
- else {
- $info['Format'] = $this->_info['sof']['Format'] . " JPEG";
- }
-
- if (@isset($this->_info['sof']['ColorChannels'])) {
- $info['ColorMode'] = ($this->_info['sof']['ColorChannels'] > 1) ? "Color" : "B&W";
- }
-
- $info['Width'] = $this->getWidth();
- $info['Height'] = $this->getHeight();
- $info['DimStr'] = $this->getDimStr();
-
- $dates = $this->getDates();
-
- $info['DateTime'] = $dates['EarliestTime'];
- $info['DateTimeStr'] = $dates['EarliestTimeStr'];
-
- $info['HasThumbnail'] = $this->hasThumbnail();
-
- return $info;
- }
-
-
- /**
- * Convinience function to access nearly all available Data
- * through one function
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function getField($fields)
- {
- if(!is_array($fields)) $fields = array($fields);
- $info = false;
- foreach($fields as $field){
- if(strtolower(substr($field,0,5)) == 'iptc.'){
- $info = $this->getIPTCField(substr($field,5));
- }elseif(strtolower(substr($field,0,5)) == 'exif.'){
- $info = $this->getExifField(substr($field,5));
- }elseif(strtolower(substr($field,0,4)) == 'xmp.'){
- $info = $this->getXmpField(substr($field,4));
- }elseif(strtolower(substr($field,0,5)) == 'file.'){
- $info = $this->getFileField(substr($field,5));
- }elseif(strtolower(substr($field,0,5)) == 'date.'){
- $info = $this->getDateField(substr($field,5));
- }elseif(strtolower($field) == 'simple.camera'){
- $info = $this->getCamera();
- }elseif(strtolower($field) == 'simple.raw'){
- return $this->getRawInfo();
- }elseif(strtolower($field) == 'simple.title'){
- $info = $this->getTitle();
- }elseif(strtolower($field) == 'simple.shutterspeed'){
- $info = $this->getShutterSpeed();
- }else{
- $info = $this->getExifField($field);
- }
- if($info != false) break;
- }
-
- if($info === false) $info = $alt;
- if(is_array($info)){
- if(isset($info['val'])){
- $info = $info['val'];
- }else{
- $info = join(', ',$info);
- }
- }
- return trim($info);
- }
-
- /**
- * Convinience function to set nearly all available Data
- * through one function
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function setField($field, $value)
- {
- if(strtolower(substr($field,0,5)) == 'iptc.'){
- return $this->setIPTCField(substr($field,5),$value);
- }elseif(strtolower(substr($field,0,5)) == 'exif.'){
- return $this->setExifField(substr($field,5),$value);
- }else{
- return $this->setExifField($field,$value);
- }
- }
-
- /**
- * Convinience function to delete nearly all available Data
- * through one function
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function deleteField($field)
- {
- if(strtolower(substr($field,0,5)) == 'iptc.'){
- return $this->deleteIPTCField(substr($field,5));
- }elseif(strtolower(substr($field,0,5)) == 'exif.'){
- return $this->deleteExifField(substr($field,5));
- }else{
- return $this->deleteExifField($field);
- }
- }
-
- /**
- * Return a date field
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function getDateField($field)
- {
- if (!isset($this->_info['dates'])) {
- $this->_info['dates'] = $this->getDates();
- }
-
- if (isset($this->_info['dates'][$field])) {
- return $this->_info['dates'][$field];
- }
-
- return false;
- }
-
- /**
- * Return a file info field
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function getFileField($field)
- {
- if (!isset($this->_info['file'])) {
- $this->_parseFileInfo();
- }
-
- if (isset($this->_info['file'][$field])) {
- return $this->_info['file'][$field];
- }
-
- return false;
- }
-
- /**
- * Return the camera info (Maker and Model)
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- * @todo handle makernotes
- */
- function getCamera(){
- $make = $this->getField(array('Exif.Make','Exif.TIFFMake'));
- $model = $this->getField(array('Exif.Model','Exif.TIFFModel'));
- $cam = trim("$make $model");
- if(empty($cam)) return false;
- return $cam;
- }
-
- /**
- * Return shutter speed as a ratio
- *
- * @author Joe Lapp <joe.lapp@pobox.com>
- */
- function getShutterSpeed()
- {
- if (!isset($this->_info['exif'])) {
- $this->_parseMarkerExif();
- }
- if(!isset($this->_info['exif']['ExposureTime'])){
- return '';
- }
-
- $field = $this->_info['exif']['ExposureTime'];
- if($field['den'] == 1) return $field['num'];
- return $field['num'].'/'.$field['den'];
- }
-
- /**
- * Return an EXIF field
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function getExifField($field)
- {
- if (!isset($this->_info['exif'])) {
- $this->_parseMarkerExif();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (isset($this->_info['exif'][$field])) {
- return $this->_info['exif'][$field];
- }
-
- return false;
- }
-
- /**
- * Return an XMP field
- *
- * @author Hakan Sandell <hakan.sandell@mydata.se>
- */
- function getXmpField($field)
- {
- if (!isset($this->_info['xmp'])) {
- $this->_parseMarkerXmp();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (isset($this->_info['xmp'][$field])) {
- return $this->_info['xmp'][$field];
- }
-
- return false;
- }
-
- /**
- * Return an Adobe Field
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function getAdobeField($field)
- {
- if (!isset($this->_info['adobe'])) {
- $this->_parseMarkerAdobe();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (isset($this->_info['adobe'][$field])) {
- return $this->_info['adobe'][$field];
- }
-
- return false;
- }
-
- /**
- * Return an IPTC field
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function getIPTCField($field)
- {
- if (!isset($this->_info['iptc'])) {
- $this->_parseMarkerAdobe();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (isset($this->_info['iptc'][$field])) {
- return $this->_info['iptc'][$field];
- }
-
- return false;
- }
-
- /**
- * Set an EXIF field
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- * @author Joe Lapp <joe.lapp@pobox.com>
- */
- function setExifField($field, $value)
- {
- if (!isset($this->_info['exif'])) {
- $this->_parseMarkerExif();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if ($this->_info['exif'] == false) {
- $this->_info['exif'] = array();
- }
-
- // make sure datetimes are in correct format
- if(strlen($field) >= 8 && strtolower(substr($field, 0, 8)) == 'datetime') {
- if(strlen($value) < 8 || $value{4} != ':' || $value{7} != ':') {
- $value = date('Y:m:d H:i:s', strtotime($value));
- }
- }
-
- $this->_info['exif'][$field] = $value;
-
- return true;
- }
-
- /**
- * Set an Adobe Field
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function setAdobeField($field, $value)
- {
- if (!isset($this->_info['adobe'])) {
- $this->_parseMarkerAdobe();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if ($this->_info['adobe'] == false) {
- $this->_info['adobe'] = array();
- }
-
- $this->_info['adobe'][$field] = $value;
-
- return true;
- }
-
- /**
- * Calculates the multiplier needed to resize the image to the given
- * dimensions
- *
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function getResizeRatio($maxwidth,$maxheight=0){
- if(!$maxheight) $maxheight = $maxwidth;
-
- $w = $this->getField('File.Width');
- $h = $this->getField('File.Height');
-
- $ratio = 1;
- if($w >= $h){
- if($w >= $maxwidth){
- $ratio = $maxwidth/$w;
- }elseif($h > $maxheight){
- $ratio = $maxheight/$h;
- }
- }else{
- if($h >= $maxheight){
- $ratio = $maxheight/$h;
- }elseif($w > $maxwidth){
- $ratio = $maxwidth/$w;
- }
- }
- return $ratio;
- }
-
-
- /**
- * Set an IPTC field
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function setIPTCField($field, $value)
- {
- if (!isset($this->_info['iptc'])) {
- $this->_parseMarkerAdobe();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if ($this->_info['iptc'] == false) {
- $this->_info['iptc'] = array();
- }
-
- $this->_info['iptc'][$field] = $value;
-
- return true;
- }
-
- /**
- * Delete an EXIF field
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function deleteExifField($field)
- {
- if (!isset($this->_info['exif'])) {
- $this->_parseMarkerAdobe();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if ($this->_info['exif'] != false) {
- unset($this->_info['exif'][$field]);
- }
-
- return true;
- }
-
- /**
- * Delete an Adobe field
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function deleteAdobeField($field)
- {
- if (!isset($this->_info['adobe'])) {
- $this->_parseMarkerAdobe();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if ($this->_info['adobe'] != false) {
- unset($this->_info['adobe'][$field]);
- }
-
- return true;
- }
-
- /**
- * Delete an IPTC field
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function deleteIPTCField($field)
- {
- if (!isset($this->_info['iptc'])) {
- $this->_parseMarkerAdobe();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if ($this->_info['iptc'] != false) {
- unset($this->_info['iptc'][$field]);
- }
-
- return true;
- }
-
- /**
- * Get the image's title, tries various fields
- *
- * @param int $max maximum number chars (keeps words)
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function getTitle($max=80){
- $cap = '';
-
- // try various fields
- $cap = $this->getField(array('Iptc.Headline',
- 'Iptc.Caption',
- 'Xmp.dc:title',
- 'Exif.UserComment',
- 'Exif.TIFFUserComment',
- 'Exif.TIFFImageDescription',
- 'File.Name'));
- if (empty($cap)) return false;
-
- if(!$max) return $cap;
- // Shorten to 80 chars (keeping words)
- $new = preg_replace('/\n.+$/','',wordwrap($cap, $max));
- if($new != $cap) $new .= '...';
-
- return $new;
- }
-
- /**
- * Gather various date fields
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function getDates()
- {
- $this->_parseAll();
- if ($this->_markers == null) {
- if (@isset($this->_info['file']['UnixTime'])) {
- $dates['FileModified'] = $this->_info['file']['UnixTime'];
- $dates['Time'] = $this->_info['file']['UnixTime'];
- $dates['TimeSource'] = 'FileModified';
- $dates['TimeStr'] = date("Y-m-d H:i:s", $this->_info['file']['UnixTime']);
- $dates['EarliestTime'] = $this->_info['file']['UnixTime'];
- $dates['EarliestTimeSource'] = 'FileModified';
- $dates['EarliestTimeStr'] = date("Y-m-d H:i:s", $this->_info['file']['UnixTime']);
- $dates['LatestTime'] = $this->_info['file']['UnixTime'];
- $dates['LatestTimeSource'] = 'FileModified';
- $dates['LatestTimeStr'] = date("Y-m-d H:i:s", $this->_info['file']['UnixTime']);
- return $dates;
- }
- return false;
- }
-
- $dates = array();
-
- $latestTime = 0;
- $latestTimeSource = "";
- $earliestTime = time();
- $earliestTimeSource = "";
-
- if (@isset($this->_info['exif']['DateTime'])) {
- $dates['ExifDateTime'] = $this->_info['exif']['DateTime'];
-
- $aux = $this->_info['exif']['DateTime'];
- $aux{4} = "-";
- $aux{7} = "-";
- $t = strtotime($aux);
-
- if ($t && $t > $latestTime) {
- $latestTime = $t;
- $latestTimeSource = "ExifDateTime";
- }
-
- if ($t && $t < $earliestTime) {
- $earliestTime = $t;
- $earliestTimeSource = "ExifDateTime";
- }
- }
-
- if (@isset($this->_info['exif']['DateTimeOriginal'])) {
- $dates['ExifDateTimeOriginal'] = $this->_info['exif']['DateTime'];
-
- $aux = $this->_info['exif']['DateTimeOriginal'];
- $aux{4} = "-";
- $aux{7} = "-";
- $t = strtotime($aux);
-
- if ($t && $t > $latestTime) {
- $latestTime = $t;
- $latestTimeSource = "ExifDateTimeOriginal";
- }
-
- if ($t && $t < $earliestTime) {
- $earliestTime = $t;
- $earliestTimeSource = "ExifDateTimeOriginal";
- }
- }
-
- if (@isset($this->_info['exif']['DateTimeDigitized'])) {
- $dates['ExifDateTimeDigitized'] = $this->_info['exif']['DateTime'];
-
- $aux = $this->_info['exif']['DateTimeDigitized'];
- $aux{4} = "-";
- $aux{7} = "-";
- $t = strtotime($aux);
-
- if ($t && $t > $latestTime) {
- $latestTime = $t;
- $latestTimeSource = "ExifDateTimeDigitized";
- }
-
- if ($t && $t < $earliestTime) {
- $earliestTime = $t;
- $earliestTimeSource = "ExifDateTimeDigitized";
- }
- }
-
- if (@isset($this->_info['iptc']['DateCreated'])) {
- $dates['IPTCDateCreated'] = $this->_info['iptc']['DateCreated'];
-
- $aux = $this->_info['iptc']['DateCreated'];
- $aux = substr($aux, 0, 4) . "-" . substr($aux, 4, 2) . "-" . substr($aux, 6, 2);
- $t = strtotime($aux);
-
- if ($t && $t > $latestTime) {
- $latestTime = $t;
- $latestTimeSource = "IPTCDateCreated";
- }
-
- if ($t && $t < $earliestTime) {
- $earliestTime = $t;
- $earliestTimeSource = "IPTCDateCreated";
- }
- }
-
- if (@isset($this->_info['file']['UnixTime'])) {
- $dates['FileModified'] = $this->_info['file']['UnixTime'];
-
- $t = $this->_info['file']['UnixTime'];
-
- if ($t && $t > $latestTime) {
- $latestTime = $t;
- $latestTimeSource = "FileModified";
- }
-
- if ($t && $t < $earliestTime) {
- $earliestTime = $t;
- $earliestTimeSource = "FileModified";
- }
- }
-
- $dates['Time'] = $earliestTime;
- $dates['TimeSource'] = $earliestTimeSource;
- $dates['TimeStr'] = date("Y-m-d H:i:s", $earliestTime);
- $dates['EarliestTime'] = $earliestTime;
- $dates['EarliestTimeSource'] = $earliestTimeSource;
- $dates['EarliestTimeStr'] = date("Y-m-d H:i:s", $earliestTime);
- $dates['LatestTime'] = $latestTime;
- $dates['LatestTimeSource'] = $latestTimeSource;
- $dates['LatestTimeStr'] = date("Y-m-d H:i:s", $latestTime);
-
- return $dates;
- }
-
- /**
- * Get the image width, tries various fields
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function getWidth()
- {
- if (!isset($this->_info['sof'])) {
- $this->_parseMarkerSOF();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (isset($this->_info['sof']['ImageWidth'])) {
- return $this->_info['sof']['ImageWidth'];
- }
-
- if (!isset($this->_info['exif'])) {
- $this->_parseMarkerExif();
- }
-
- if (isset($this->_info['exif']['PixelXDimension'])) {
- return $this->_info['exif']['PixelXDimension'];
- }
-
- return false;
- }
-
- /**
- * Get the image height, tries various fields
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function getHeight()
- {
- if (!isset($this->_info['sof'])) {
- $this->_parseMarkerSOF();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (isset($this->_info['sof']['ImageHeight'])) {
- return $this->_info['sof']['ImageHeight'];
- }
-
- if (!isset($this->_info['exif'])) {
- $this->_parseMarkerExif();
- }
-
- if (isset($this->_info['exif']['PixelYDimension'])) {
- return $this->_info['exif']['PixelYDimension'];
- }
-
- return false;
- }
-
- /**
- * Get an dimension string for use in img tag
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function getDimStr()
- {
- if ($this->_markers == null) {
- return false;
- }
-
- $w = $this->getWidth();
- $h = $this->getHeight();
-
- return "width='" . $w . "' height='" . $h . "'";
- }
-
- /**
- * Checks for an embedded thumbnail
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function hasThumbnail($which = 'any')
- {
- if (($which == 'any') || ($which == 'exif')) {
- if (!isset($this->_info['exif'])) {
- $this->_parseMarkerExif();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (isset($this->_info['exif']) && is_array($this->_info['exif'])) {
- if (isset($this->_info['exif']['JFIFThumbnail'])) {
- return 'exif';
- }
- }
- }
-
- if ($which == 'adobe') {
- if (!isset($this->_info['adobe'])) {
- $this->_parseMarkerAdobe();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (isset($this->_info['adobe']) && is_array($this->_info['adobe'])) {
- if (isset($this->_info['adobe']['ThumbnailData'])) {
- return 'exif';
- }
- }
- }
-
- return false;
- }
-
- /**
- * Send embedded thumbnail to browser
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- */
- function sendThumbnail($which = 'any')
- {
- $data = null;
-
- if (($which == 'any') || ($which == 'exif')) {
- if (!isset($this->_info['exif'])) {
- $this->_parseMarkerExif();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (isset($this->_info['exif']) && is_array($this->_info['exif'])) {
- if (isset($this->_info['exif']['JFIFThumbnail'])) {
- $data =& $this->_info['exif']['JFIFThumbnail'];
- }
- }
- }
-
- if (($which == 'adobe') || ($data == null)){
- if (!isset($this->_info['adobe'])) {
- $this->_parseMarkerAdobe();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (isset($this->_info['adobe']) && is_array($this->_info['adobe'])) {
- if (isset($this->_info['adobe']['ThumbnailData'])) {
- $data =& $this->_info['adobe']['ThumbnailData'];
- }
- }
- }
-
- if ($data != null) {
- header("Content-type: image/jpeg");
- echo $data;
- return true;
- }
-
- return false;
- }
-
- /**
- * Save changed Metadata
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function save($fileName = "") {
- if ($fileName == "") {
- $tmpName = tempnam(dirname($this->_fileName),'_metatemp_');
- $this->_writeJPEG($tmpName);
- if (@file_exists($tmpName)) {
- return io_rename($tmpName, $this->_fileName);
- }
- } else {
- return $this->_writeJPEG($fileName);
- }
- return false;
- }
-
- /*************************************************************/
- /* PRIVATE FUNCTIONS (Internal Use Only!) */
- /*************************************************************/
-
- /*************************************************************/
- function _dispose()
- {
- $this->_fileName = $fileName;
-
- $this->_fp = null;
- $this->_type = 'unknown';
-
- unset($this->_markers);
- unset($this->_info);
- }
-
- /*************************************************************/
- function _readJPEG()
- {
- unset($this->_markers);
- //unset($this->_info);
- $this->_markers = array();
- //$this->_info = array();
-
- $this->_fp = @fopen($this->_fileName, 'rb');
- if ($this->_fp) {
- if (file_exists($this->_fileName)) {
- $this->_type = 'file';
- }
- else {
- $this->_type = 'url';
- }
- }
- else {
- $this->_fp = null;
- return false; // ERROR: Can't open file
- }
-
- // Check for the JPEG signature
- $c1 = ord(fgetc($this->_fp));
- $c2 = ord(fgetc($this->_fp));
-
- if ($c1 != 0xFF || $c2 != 0xD8) { // (0xFF + SOI)
- $this->_markers = null;
- return false; // ERROR: File is not a JPEG
- }
-
- $count = 0;
-
- $done = false;
- $ok = true;
-
- while (!$done) {
- $capture = false;
-
- // First, skip any non 0xFF bytes
- $discarded = 0;
- $c = ord(fgetc($this->_fp));
- while (!feof($this->_fp) && ($c != 0xFF)) {
- $discarded++;
- $c = ord(fgetc($this->_fp));
- }
- // Then skip all 0xFF until the marker byte
- do {
- $marker = ord(fgetc($this->_fp));
- } while (!feof($this->_fp) && ($marker == 0xFF));
-
- if (feof($this->_fp)) {
- return false; // ERROR: Unexpected EOF
- }
- if ($discarded != 0) {
- return false; // ERROR: Extraneous data
- }
-
- $length = ord(fgetc($this->_fp)) * 256 + ord(fgetc($this->_fp));
- if (feof($this->_fp)) {
- return false; // ERROR: Unexpected EOF
- }
- if ($length < 2) {
- return false; // ERROR: Extraneous data
- }
- $length = $length - 2; // The length we got counts itself
-
- switch ($marker) {
- case 0xC0: // SOF0
- case 0xC1: // SOF1
- case 0xC2: // SOF2
- case 0xC9: // SOF9
- case 0xE0: // APP0: JFIF data
- case 0xE1: // APP1: EXIF or XMP data
- case 0xED: // APP13: IPTC / Photoshop data
- $capture = true;
- break;
- case 0xDA: // SOS: Start of scan... the image itself and the last block on the file
- $capture = false;
- $length = -1; // This field has no length... it includes all data until EOF
- $done = true;
- break;
- default:
- $capture = true;//false;
- break;
- }
-
- $this->_markers[$count] = array();
- $this->_markers[$count]['marker'] = $marker;
- $this->_markers[$count]['length'] = $length;
-
- if ($capture) {
- if ($length)
- $this->_markers[$count]['data'] =& fread($this->_fp, $length);
- else
- $this->_markers[$count]['data'] = "";
- }
- elseif (!$done) {
- $result = @fseek($this->_fp, $length, SEEK_CUR);
- // fseek doesn't seem to like HTTP 'files', but fgetc has no problem
- if (!($result === 0)) {
- for ($i = 0; $i < $length; $i++) {
- fgetc($this->_fp);
- }
- }
- }
- $count++;
- }
-
- if ($this->_fp) {
- fclose($this->_fp);
- $this->_fp = null;
- }
-
- return $ok;
- }
-
- /*************************************************************/
- function _parseAll()
- {
- if (!isset($this->_info['file'])) {
- $this->_parseFileInfo();
- }
- if (!isset($this->_markers)) {
- $this->_readJPEG();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- if (!isset($this->_info['jfif'])) {
- $this->_parseMarkerJFIF();
- }
- if (!isset($this->_info['jpeg'])) {
- $this->_parseMarkerSOF();
- }
- if (!isset($this->_info['exif'])) {
- $this->_parseMarkerExif();
- }
- if (!isset($this->_info['xmp'])) {
- $this->_parseMarkerXmp();
- }
- if (!isset($this->_info['adobe'])) {
- $this->_parseMarkerAdobe();
- }
- }
-
- /*************************************************************/
- function _writeJPEG($outputName)
- {
- $this->_parseAll();
-
- $wroteEXIF = false;
- $wroteAdobe = false;
-
- $this->_fp = @fopen($this->_fileName, 'r');
- if ($this->_fp) {
- if (file_exists($this->_fileName)) {
- $this->_type = 'file';
- }
- else {
- $this->_type = 'url';
- }
- }
- else {
- $this->_fp = null;
- return false; // ERROR: Can't open file
- }
-
- $this->_fpout = fopen($outputName, 'wb');
- if ($this->_fpout) {
- }
- else {
- $this->_fpout = null;
- fclose($this->_fp);
- $this->_fp = null;
- return false; // ERROR: Can't open output file
- }
-
- // Check for the JPEG signature
- $c1 = ord(fgetc($this->_fp));
- $c2 = ord(fgetc($this->_fp));
-
- if ($c1 != 0xFF || $c2 != 0xD8) { // (0xFF + SOI)
- return false; // ERROR: File is not a JPEG
- }
-
- fputs($this->_fpout, chr(0xFF), 1);
- fputs($this->_fpout, chr(0xD8), 1); // (0xFF + SOI)
-
- $count = 0;
-
- $done = false;
- $ok = true;
-
- while (!$done) {
- // First, skip any non 0xFF bytes
- $discarded = 0;
- $c = ord(fgetc($this->_fp));
- while (!feof($this->_fp) && ($c != 0xFF)) {
- $discarded++;
- $c = ord(fgetc($this->_fp));
- }
- // Then skip all 0xFF until the marker byte
- do {
- $marker = ord(fgetc($this->_fp));
- } while (!feof($this->_fp) && ($marker == 0xFF));
-
- if (feof($this->_fp)) {
- $ok = false;
- break; // ERROR: Unexpected EOF
- }
- if ($discarded != 0) {
- $ok = false;
- break; // ERROR: Extraneous data
- }
-
- $length = ord(fgetc($this->_fp)) * 256 + ord(fgetc($this->_fp));
- if (feof($this->_fp)) {
- $ok = false;
- break; // ERROR: Unexpected EOF
- }
- if ($length < 2) {
- $ok = false;
- break; // ERROR: Extraneous data
- }
- $length = $length - 2; // The length we got counts itself
-
- unset($data);
- if ($marker == 0xE1) { // APP1: EXIF data
- $data =& $this->_createMarkerEXIF();
- $wroteEXIF = true;
- }
- elseif ($marker == 0xED) { // APP13: IPTC / Photoshop data
- $data =& $this->_createMarkerAdobe();
- $wroteAdobe = true;
- }
- elseif ($marker == 0xDA) { // SOS: Start of scan... the image itself and the last block on the file
- $done = true;
- }
-
- if (!$wroteEXIF && (($marker < 0xE0) || ($marker > 0xEF))) {
- if (isset($this->_info['exif']) && is_array($this->_info['exif'])) {
- $exif =& $this->_createMarkerEXIF();
- $this->_writeJPEGMarker(0xE1, strlen($exif), $exif, 0);
- unset($exif);
- }
- $wroteEXIF = true;
- }
-
- if (!$wroteAdobe && (($marker < 0xE0) || ($marker > 0xEF))) {
- if ((isset($this->_info['adobe']) && is_array($this->_info['adobe']))
- || (isset($this->_info['iptc']) && is_array($this->_info['iptc']))) {
- $adobe =& $this->_createMarkerAdobe();
- $this->_writeJPEGMarker(0xED, strlen($adobe), $adobe, 0);
- unset($adobe);
- }
- $wroteAdobe = true;
- }
-
- $origLength = $length;
- if (isset($data)) {
- $length = strlen($data);
- }
-
- if ($marker != -1) {
- $this->_writeJPEGMarker($marker, $length, $data, $origLength);
- }
- }
-
- if ($this->_fp) {
- fclose($this->_fp);
- $this->_fp = null;
- }
-
- if ($this->_fpout) {
- fclose($this->_fpout);
- $this->_fpout = null;
- }
-
- return $ok;
- }
-
- /*************************************************************/
- function _writeJPEGMarker($marker, $length, &$data, $origLength)
- {
- if ($length <= 0) {
- return false;
- }
-
- fputs($this->_fpout, chr(0xFF), 1);
- fputs($this->_fpout, chr($marker), 1);
- fputs($this->_fpout, chr((($length + 2) & 0x0000FF00) >> 8), 1);
- fputs($this->_fpout, chr((($length + 2) & 0x000000FF) >> 0), 1);
-
- if (isset($data)) {
- // Copy the generated data
- fputs($this->_fpout, $data, $length);
-
- if ($origLength > 0) { // Skip the original data
- $result = @fseek($this->_fp, $origLength, SEEK_CUR);
- // fseek doesn't seem to like HTTP 'files', but fgetc has no problem
- if ($result != 0) {
- for ($i = 0; $i < $origLength; $i++) {
- fgetc($this->_fp);
- }
- }
- }
- }
- else {
- if ($marker == 0xDA) { // Copy until EOF
- while (!feof($this->_fp)) {
- $data = fread($this->_fp, 1024 * 16);
- fputs($this->_fpout, $data, strlen($data));
- }
- }
- else { // Copy only $length bytes
- $data = @fread($this->_fp, $length);
- fputs($this->_fpout, $data, $length);
- }
- }
-
- return true;
- }
-
- /**
- * Gets basic info from the file - should work with non-JPEGs
- *
- * @author Sebastian Delmont <sdelmont@zonageek.com>
- * @author Andreas Gohr <andi@splitbrain.org>
- */
- function _parseFileInfo()
- {
- if (file_exists($this->_fileName)) {
- $this->_info['file'] = array();
- $this->_info['file']['Name'] = basename($this->_fileName);
- $this->_info['file']['Path'] = fullpath($this->_fileName);
- $this->_info['file']['Size'] = filesize($this->_fileName);
- if ($this->_info['file']['Size'] < 1024) {
- $this->_info['file']['NiceSize'] = $this->_info['file']['Size'] . 'B';
- }
- elseif ($this->_info['file']['Size'] < (1024 * 1024)) {
- $this->_info['file']['NiceSize'] = round($this->_info['file']['Size'] / 1024) . 'KB';
- }
- elseif ($this->_info['file']['Size'] < (1024 * 1024 * 1024)) {
- $this->_info['file']['NiceSize'] = round($this->_info['file']['Size'] / (1024*1024)) . 'MB';
- }
- else {
- $this->_info['file']['NiceSize'] = $this->_info['file']['Size'] . 'B';
- }
- $this->_info['file']['UnixTime'] = filemtime($this->_fileName);
-
- // get image size directly from file
- $size = getimagesize($this->_fileName);
- $this->_info['file']['Width'] = $size[0];
- $this->_info['file']['Height'] = $size[1];
- // set mime types and formats
- // http://www.php.net/manual/en/function.getimagesize.php
- // http://www.php.net/manual/en/function.image-type-to-mime-type.php
- switch ($size[2]){
- case 1:
- $this->_info['file']['Mime'] = 'image/gif';
- $this->_info['file']['Format'] = 'GIF';
- break;
- case 2:
- $this->_info['file']['Mime'] = 'image/jpeg';
- $this->_info['file']['Format'] = 'JPEG';
- break;
- case 3:
- $this->_info['file']['Mime'] = 'image/png';
- $this->_info['file']['Format'] = 'PNG';
- break;
- case 4:
- $this->_info['file']['Mime'] = 'application/x-shockwave-flash';
- $this->_info['file']['Format'] = 'SWF';
- break;
- case 5:
- $this->_info['file']['Mime'] = 'image/psd';
- $this->_info['file']['Format'] = 'PSD';
- break;
- case 6:
- $this->_info['file']['Mime'] = 'image/bmp';
- $this->_info['file']['Format'] = 'BMP';
- break;
- case 7:
- $this->_info['file']['Mime'] = 'image/tiff';
- $this->_info['file']['Format'] = 'TIFF (Intel)';
- break;
- case 8:
- $this->_info['file']['Mime'] = 'image/tiff';
- $this->_info['file']['Format'] = 'TIFF (Motorola)';
- break;
- case 9:
- $this->_info['file']['Mime'] = 'application/octet-stream';
- $this->_info['file']['Format'] = 'JPC';
- break;
- case 10:
- $this->_info['file']['Mime'] = 'image/jp2';
- $this->_info['file']['Format'] = 'JP2';
- break;
- case 11:
- $this->_info['file']['Mime'] = 'application/octet-stream';
- $this->_info['file']['Format'] = 'JPX';
- break;
- case 12:
- $this->_info['file']['Mime'] = 'application/octet-stream';
- $this->_info['file']['Format'] = 'JB2';
- break;
- case 13:
- $this->_info['file']['Mime'] = 'application/x-shockwave-flash';
- $this->_info['file']['Format'] = 'SWC';
- break;
- case 14:
- $this->_info['file']['Mime'] = 'image/iff';
- $this->_info['file']['Format'] = 'IFF';
- break;
- case 15:
- $this->_info['file']['Mime'] = 'image/vnd.wap.wbmp';
- $this->_info['file']['Format'] = 'WBMP';
- break;
- case 16:
- $this->_info['file']['Mime'] = 'image/xbm';
- $this->_info['file']['Format'] = 'XBM';
- break;
- default:
- $this->_info['file']['Mime'] = 'image/unknown';
- }
- }
- else {
- $this->_info['file'] = array();
- $this->_info['file']['Name'] = basename($this->_fileName);
- $this->_info['file']['Url'] = $this->_fileName;
- }
-
- return true;
- }
-
- /*************************************************************/
- function _parseMarkerJFIF()
- {
- if (!isset($this->_markers)) {
- $this->_readJPEG();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- $data = null;
- $count = count($this->_markers);
- for ($i = 0; $i < $count; $i++) {
- if ($this->_markers[$i]['marker'] == 0xE0) {
- $signature = $this->_getFixedString($this->_markers[$i]['data'], 0, 4);
- if ($signature == 'JFIF') {
- $data =& $this->_markers[$i]['data'];
- break;
- }
- }
- }
-
- if ($data == null) {
- $this->_info['jfif'] = false;
- return false;
- }
-
- $pos = 0;
- $this->_info['jfif'] = array();
-
-
- $vmaj = $this->_getByte($data, 5);
- $vmin = $this->_getByte($data, 6);
-
- $this->_info['jfif']['Version'] = sprintf('%d.%02d', $vmaj, $vmin);
-
- $units = $this->_getByte($data, 7);
- switch ($units) {
- case 0:
- $this->_info['jfif']['Units'] = 'pixels';
- break;
- case 1:
- $this->_info['jfif']['Units'] = 'dpi';
- break;
- case 2:
- $this->_info['jfif']['Units'] = 'dpcm';
- break;
- default:
- $this->_info['jfif']['Units'] = 'unknown';
- break;
- }
-
- $xdens = $this->_getShort($data, 8);
- $ydens = $this->_getShort($data, 10);
-
- $this->_info['jfif']['XDensity'] = $xdens;
- $this->_info['jfif']['YDensity'] = $ydens;
-
- $thumbx = $this->_getByte($data, 12);
- $thumby = $this->_getByte($data, 13);
-
- $this->_info['jfif']['ThumbnailWidth'] = $thumbx;
- $this->_info['jfif']['ThumbnailHeight'] = $thumby;
-
- return true;
- }
-
- /*************************************************************/
- function _parseMarkerSOF()
- {
- if (!isset($this->_markers)) {
- $this->_readJPEG();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- $data = null;
- $count = count($this->_markers);
- for ($i = 0; $i < $count; $i++) {
- switch ($this->_markers[$i]['marker']) {
- case 0xC0: // SOF0
- case 0xC1: // SOF1
- case 0xC2: // SOF2
- case 0xC9: // SOF9
- $data =& $this->_markers[$i]['data'];
- $marker = $this->_markers[$i]['marker'];
- break;
- }
- }
-
- if ($data == null) {
- $this->_info['sof'] = false;
- return false;
- }
-
- $pos = 0;
- $this->_info['sof'] = array();
-
-
- switch ($marker) {
- case 0xC0: // SOF0
- $format = 'Baseline';
- break;
- case 0xC1: // SOF1
- $format = 'Progessive';
- break;
- case 0xC2: // SOF2
- $format = 'Non-baseline';
- break;
- case 0xC9: // SOF9
- $format = 'Arithmetic';
- break;
- default:
- return false;
- break;
- }
-
-
- $this->_info['sof']['Format'] = $format;
-
- $this->_info['sof']['SamplePrecision'] = $this->_getByte($data, $pos + 0);
- $this->_info['sof']['ImageHeight'] = $this->_getShort($data, $pos + 1);
- $this->_info['sof']['ImageWidth'] = $this->_getShort($data, $pos + 3);
- $this->_info['sof']['ColorChannels'] = $this->_getByte($data, $pos + 5);
-
- return true;
- }
-
- /**
- * Parses the XMP data
- *
- * @author Hakan Sandell <hakan.sandell@mydata.se>
- */
- function _parseMarkerXmp()
- {
- if (!isset($this->_markers)) {
- $this->_readJPEG();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- $data = null;
- $count = count($this->_markers);
- for ($i = 0; $i < $count; $i++) {
- if ($this->_markers[$i]['marker'] == 0xE1) {
- $signature = $this->_getFixedString($this->_markers[$i]['data'], 0, 29);
- if ($signature == "http://ns.adobe.com/xap/1.0/\0") {
- $data =& substr($this->_markers[$i]['data'], 29);
- break;
- }
- }
- }
-
- if ($data == null) {
- $this->_info['xmp'] = false;
- return false;
- }
-
- $parser = xml_parser_create();
- xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
- xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
- xml_parse_into_struct($parser, $data, $values, $tags);
- xml_parser_free($parser);
-
- $this->_info['xmp'] = array();
- $count = count($values);
- for ($i = 0; $i < $count; $i++) {
- if ($values[$i][tag] == 'rdf:Description' && $values[$i][type] == 'open') {
-
- while ($values[++$i][tag] != 'rdf:Description') {
- $this->_parseXmpNode($values, $i, $this->_info['xmp'][$values[$i][tag]]);
- }
- }
- }
- return true;
- }
-
- /**
- * Parses XMP nodes by recursion
- *
- * @author Hakan Sandell <hakan.sandell@mydata.se>
- */
- function _parseXmpNode($values, &$i, &$meta)
- {
- if ($values[$i][type] == 'complete') {
- // Simple Type property
- $meta = $values[$i][value];
- return;
- }
-
- $i++;
- if ($values[$i][tag] == 'rdf:Bag' || $values[$i][tag] == 'rdf:Seq') {
- // Array property
- $meta = array();
- while ($values[++$i][tag] == 'rdf:li') {
- $this->_parseXmpNode($values, $i, $meta[]);
- }
- $i++; // skip closing tag
-
- } elseif ($values[$i][tag] == 'rdf:Alt') {
- // Language Alternative property, only the first (default) value is used
- $i++;
- $this->_parseXmpNode($values, $i, $meta);
- while ($values[++$i][tag] != 'rdf:Alt');
- $i++; // skip closing tag
-
- } else {
- // Structure property
- $meta = array();
- $startTag = $values[$i-1][tag];
- do {
- $this->_parseXmpNode($values, $i, $meta[$values[$i][tag]]);
- } while ($values[++$i][tag] != $startTag);
- }
- }
-
- /*************************************************************/
- function _parseMarkerExif()
- {
- if (!isset($this->_markers)) {
- $this->_readJPEG();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- $data = null;
- $count = count($this->_markers);
- for ($i = 0; $i < $count; $i++) {
- if ($this->_markers[$i]['marker'] == 0xE1) {
- $signature = $this->_getFixedString($this->_markers[$i]['data'], 0, 6);
- if ($signature == "Exif\0\0") {
- $data =& $this->_markers[$i]['data'];
- break;
- }
- }
- }
-
- if ($data == null) {
- $this->_info['exif'] = false;
- return false;
- }
- $pos = 6;
- $this->_info['exif'] = array();
-
- // We don't increment $pos after this because Exif uses offsets relative to this point
-
- $byteAlign = $this->_getShort($data, $pos + 0);
-
- if ($byteAlign == 0x4949) { // "II"
- $isBigEndian = false;
- }
- elseif ($byteAlign == 0x4D4D) { // "MM"
- $isBigEndian = true;
- }
- else {
- return false; // Unexpected data
- }
-
- $alignCheck = $this->_getShort($data, $pos + 2, $isBigEndian);
- if ($alignCheck != 0x002A) // That's the expected value
- return false; // Unexpected data
-
- if ($isBigEndian) {
- $this->_info['exif']['ByteAlign'] = "Big Endian";
- }
- else {
- $this->_info['exif']['ByteAlign'] = "Little Endian";
- }
-
- $offsetIFD0 = $this->_getLong($data, $pos + 4, $isBigEndian);
- if ($offsetIFD0 < 8)
- return false; // Unexpected data
-
- $offsetIFD1 = $this->_readIFD($data, $pos, $offsetIFD0, $isBigEndian, 'ifd0');
- if ($offsetIFD1 != 0)
- $this->_readIFD($data, $pos, $offsetIFD1, $isBigEndian, 'ifd1');
-
- return true;
- }
-
- /*************************************************************/
- function _readIFD($data, $base, $offset, $isBigEndian, $mode)
- {
- $EXIFTags = $this->_exifTagNames($mode);
-
- $numEntries = $this->_getShort($data, $base + $offset, $isBigEndian);
- $offset += 2;
-
- $exifTIFFOffset = 0;
- $exifTIFFLength = 0;
- $exifThumbnailOffset = 0;
- $exifThumbnailLength = 0;
-
- for ($i = 0; $i < $numEntries; $i++) {
- $tag = $this->_getShort($data, $base + $offset, $isBigEndian);
- $offset += 2;
- $type = $this->_getShort($data, $base + $offset, $isBigEndian);
- $offset += 2;
- $count = $this->_getLong($data, $base + $offset, $isBigEndian);
- $offset += 4;
-
- if (($type < 1) || ($type > 12))
- return false; // Unexpected Type
-
- $typeLengths = array( -1, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8 );
-
- $dataLength = $typeLengths[$type] * $count;
- if ($dataLength > 4) {
- $dataOffset = $this->_getLong($data, $base + $offset, $isBigEndian);
- $rawValue = $this->_getFixedString($data, $base + $dataOffset, $dataLength);
- }
- else {
- $rawValue = $this->_getFixedString($data, $base + $offset, $dataLength);
- }
- $offset += 4;
-
- switch ($type) {
- case 1: // UBYTE
- if ($count == 1) {
- $value = $this->_getByte($rawValue, 0);
- }
- else {
- $value = array();
- for ($j = 0; $j < $count; $j++)
- $value[$j] = $this->_getByte($rawValue, $j);
- }
- break;
- case 2: // ASCII
- $value = $rawValue;
- break;
- case 3: // USHORT
- if ($count == 1) {
- $value = $this->_getShort($rawValue, 0, $isBigEndian);
- }
- else {
- $value = array();
- for ($j = 0; $j < $count; $j++)
- $value[$j] = $this->_getShort($rawValue, $j * 2, $isBigEndian);
- }
- break;
- case 4: // ULONG
- if ($count == 1) {
- $value = $this->_getLong($rawValue, 0, $isBigEndian);
- }
- else {
- $value = array();
- for ($j = 0; $j < $count; $j++)
- $value[$j] = $this->_getLong($rawValue, $j * 4, $isBigEndian);
- }
- break;
- case 5: // URATIONAL
- if ($count == 1) {
- $a = $this->_getLong($rawValue, 0, $isBigEndian);
- $b = $this->_getLong($rawValue, 4, $isBigEndian);
- $value = array();
- $value['val'] = 0;
- $value['num'] = $a;
- $value['den'] = $b;
- if (($a != 0) && ($b != 0)) {
- $value['val'] = $a / $b;
- }
- }
- else {
- $value = array();
- for ($j = 0; $j < $count; $j++) {
- $a = $this->_getLong($rawValue, $j * 8, $isBigEndian);
- $b = $this->_getLong($rawValue, ($j * 8) + 4, $isBigEndian);
- $value = array();
- $value[$j]['val'] = 0;
- $value[$j]['num'] = $a;
- $value[$j]['den'] = $b;
- if (($a != 0) && ($b != 0))
- $value[$j]['val'] = $a / $b;
- }
- }
- break;
- case 6: // SBYTE
- if ($count == 1) {
- $value = $this->_getByte($rawValue, 0);
- }
- else {
- $value = array();
- for ($j = 0; $j < $count; $j++)
- $value[$j] = $this->_getByte($rawValue, $j);
- }
- break;
- case 7: // UNDEFINED
- $value = $rawValue;
- break;
- case 8: // SSHORT
- if ($count == 1) {
- $value = $this->_getShort($rawValue, 0, $isBigEndian);
- }
- else {
- $value = array();
- for ($j = 0; $j < $count; $j++)
- $value[$j] = $this->_getShort($rawValue, $j * 2, $isBigEndian);
- }
- break;
- case 9: // SLONG
- if ($count == 1) {
- $value = $this->_getLong($rawValue, 0, $isBigEndian);
- }
- else {
- $value = array();
- for ($j = 0; $j < $count; $j++)
- $value[$j] = $this->_getLong($rawValue, $j * 4, $isBigEndian);
- }
- break;
- case 10: // SRATIONAL
- if ($count == 1) {
- $a = $this->_getLong($rawValue, 0, $isBigEndian);
- $b = $this->_getLong($rawValue, 4, $isBigEndian);
- $value = array();
- $value['val'] = 0;
- $value['num'] = $a;
- $value['den'] = $b;
- if (($a != 0) && ($b != 0))
- $value['val'] = $a / $b;
- }
- else {
- $value = array();
- for ($j = 0; $j < $count; $j++) {
- $a = $this->_getLong($rawValue, $j * 8, $isBigEndian);
- $b = $this->_getLong($rawValue, ($j * 8) + 4, $isBigEndian);
- $value = array();
- $value[$j]['val'] = 0;
- $value[$j]['num'] = $a;
- $value[$j]['den'] = $b;
- if (($a != 0) && ($b != 0))
- $value[$j]['val'] = $a / $b;
- }
- }
- break;
- case 11: // FLOAT
- $value = $rawValue;
- break;
-
- case 12: // DFLOAT
- $value = $rawValue;
- break;
- default:
- return false; // Unexpected Type
- }
-
- $tagName = '';
- if (($mode == 'ifd0') && ($tag == 0x8769)) { // ExifIFDOffset
- $this->_readIFD($data, $base, $value, $isBigEndian, 'exif');
- }
- elseif (($mode == 'ifd0') && ($tag == 0x8825)) { // GPSIFDOffset
- $this->_readIFD($data, $base, $value, $isBigEndian, 'gps');
- }
- elseif (($mode == 'ifd1') && ($tag == 0x0111)) { // TIFFStripOffsets
- $exifTIFFOffset = $value;
- }
- elseif (($mode == 'ifd1') && ($tag == 0x0117)) { // TIFFStripByteCounts
- $exifTIFFLength = $value;
- }
- elseif (($mode == 'ifd1') && ($tag == 0x0201)) { // TIFFJFIFOffset
- $exifThumbnailOffset = $value;
- }
- elseif (($mode == 'ifd1') && ($tag == 0x0202)) { // TIFFJFIFLength
- $exifThumbnailLength = $value;
- }
- elseif (($mode == 'exif') && ($tag == 0xA005)) { // InteropIFDOffset
- $this->_readIFD($data, $base, $value, $isBigEndian, 'interop');
- }
- // elseif (($mode == 'exif') && ($tag == 0x927C)) { // MakerNote
- // }
- else {
- if (isset($EXIFTags[$tag])) {
- $tagName = $EXIFTags[$tag];
- if (isset($this->_info['exif'][$tagName])) {
- if (!is_array($this->_info['exif'][$tagName])) {
- $aux = array();
- $aux[0] = $this->_info['exif'][$tagName];
- $this->_info['exif'][$tagName] = $aux;
- }
-
- $this->_info['exif'][$tagName][count($this->_info['exif'][$tagName])] = $value;
- }
- else {
- $this->_info['exif'][$tagName] = $value;
- }
- }
- else {
-#echo sprintf("<h1>Unknown tag %02x (t: %d l: %d) %s in %s</h1>", $tag, $type, $count, $mode, $this->_fileName);
- // Unknown Tags will be ignored!!!
- // That's because the tag might be a pointer (like the Exif tag)
- // and saving it without saving the data it points to might
- // create an invalid file.
- }
- }
- }
-
- if (($exifThumbnailOffset > 0) && ($exifThumbnailLength > 0)) {
- $this->_info['exif']['JFIFThumbnail'] = $this->_getFixedString($data, $base + $exifThumbnailOffset, $exifThumbnailLength);
- }
-
- if (($exifTIFFOffset > 0) && ($exifTIFFLength > 0)) {
- $this->_info['exif']['TIFFStrips'] = $this->_getFixedString($data, $base + $exifTIFFOffset, $exifTIFFLength);
- }
-
- $nextOffset = $this->_getLong($data, $base + $offset, $isBigEndian);
- return $nextOffset;
- }
-
- /*************************************************************/
- function & _createMarkerExif()
- {
- $data = null;
- $count = count($this->_markers);
- for ($i = 0; $i < $count; $i++) {
- if ($this->_markers[$i]['marker'] == 0xE1) {
- $signature = $this->_getFixedString($this->_markers[$i]['data'], 0, 6);
- if ($signature == "Exif\0\0") {
- $data =& $this->_markers[$i]['data'];
- break;
- }
- }
- }
-
- if (!isset($this->_info['exif'])) {
- return false;
- }
-
- $data = "Exif\0\0";
- $pos = 6;
- $offsetBase = 6;
-
- if (isset($this->_info['exif']['ByteAlign']) && ($this->_info['exif']['ByteAlign'] == "Big Endian")) {
- $isBigEndian = true;
- $aux = "MM";
- $pos = $this->_putString($data, $pos, $aux);
- }
- else {
- $isBigEndian = false;
- $aux = "II";
- $pos = $this->_putString($data, $pos, $aux);
- }
- $pos = $this->_putShort($data, $pos, 0x002A, $isBigEndian);
- $pos = $this->_putLong($data, $pos, 0x00000008, $isBigEndian); // IFD0 Offset is always 8
-
- $ifd0 =& $this->_getIFDEntries($isBigEndian, 'ifd0');
- $ifd1 =& $this->_getIFDEntries($isBigEndian, 'ifd1');
-
- $pos = $this->_writeIFD($data, $pos, $offsetBase, $ifd0, $isBigEndian, true);
- $pos = $this->_writeIFD($data, $pos, $offsetBase, $ifd1, $isBigEndian, false);
-
- return $data;
- }
-
- /*************************************************************/
- function _writeIFD(&$data, $pos, $offsetBase, &$entries, $isBigEndian, $hasNext)
- {
- $tiffData = null;
- $tiffDataOffsetPos = -1;
-
- $entryCount = count($entries);
-
- $dataPos = $pos + 2 + ($entryCount * 12) + 4;
- $pos = $this->_putShort($data, $pos, $entryCount, $isBigEndian);
-
- for ($i = 0; $i < $entryCount; $i++) {
- $tag = $entries[$i]['tag'];
- $type = $entries[$i]['type'];
-
- if ($type == -99) { // SubIFD
- $pos = $this->_putShort($data, $pos, $tag, $isBigEndian);
- $pos = $this->_putShort($data, $pos, 0x04, $isBigEndian); // LONG
- $pos = $this->_putLong($data, $pos, 0x01, $isBigEndian); // Count = 1
- $pos = $this->_putLong($data, $pos, $dataPos - $offsetBase, $isBigEndian);
-
- $dataPos = $this->_writeIFD($data, $dataPos, $offsetBase, $entries[$i]['value'], $isBigEndian, false);
- }
- elseif ($type == -98) { // TIFF Data
- $pos = $this->_putShort($data, $pos, $tag, $isBigEndian);
- $pos = $this->_putShort($data, $pos, 0x04, $isBigEndian); // LONG
- $pos = $this->_putLong($data, $pos, 0x01, $isBigEndian); // Count = 1
- $tiffDataOffsetPos = $pos;
- $pos = $this->_putLong($data, $pos, 0x00, $isBigEndian); // For Now
- $tiffData =& $entries[$i]['value'] ;
- }
- else { // Regular Entry
- $pos = $this->_putShort($data, $pos, $tag, $isBigEndian);
- $pos = $this->_putShort($data, $pos, $type, $isBigEndian);
- $pos = $this->_putLong($data, $pos, $entries[$i]['count'], $isBigEndian);
- if (strlen($entries[$i]['value']) > 4) {
- $pos = $this->_putLong($data, $pos, $dataPos - $offsetBase, $isBigEndian);
- $dataPos = $this->_putString($data, $dataPos, $entries[$i]['value']);
- }
- else {
- $val = str_pad($entries[$i]['value'], 4, "\0");
- $pos = $this->_putString($data, $pos, $val);
- }
- }
- }
-
- if ($tiffData != null) {
- $this->_putLong($data, $tiffDataOffsetPos, $dataPos - $offsetBase, $isBigEndian);
- $dataPos = $this->_putString($data, $dataPos, $tiffData);
- }
-
- if ($hasNext) {
- $pos = $this->_putLong($data, $pos, $dataPos - $offsetBase, $isBigEndian);
- }
- else {
- $pos = $this->_putLong($data, $pos, 0, $isBigEndian);
- }
-
- return $dataPos;
- }
-
- /*************************************************************/
- function & _getIFDEntries($isBigEndian, $mode)
- {
- $EXIFNames = $this->_exifTagNames($mode);
- $EXIFTags = $this->_exifNameTags($mode);
- $EXIFTypeInfo = $this->_exifTagTypes($mode);
-
- $ifdEntries = array();
- $entryCount = 0;
-
- reset($EXIFNames);
- while (list($tag, $name) = each($EXIFNames)) {
- $type = $EXIFTypeInfo[$tag][0];
- $count = $EXIFTypeInfo[$tag][1];
- $value = null;
-
- if (($mode == 'ifd0') && ($tag == 0x8769)) { // ExifIFDOffset
- if (isset($this->_info['exif']['EXIFVersion'])) {
- $value =& $this->_getIFDEntries($isBigEndian, "exif");
- $type = -99;
- }
- else {
- $value = null;
- }
- }
- elseif (($mode == 'ifd0') && ($tag == 0x8825)) { // GPSIFDOffset
- if (isset($this->_info['exif']['GPSVersionID'])) {
- $value =& $this->_getIFDEntries($isBigEndian, "gps");
- $type = -99;
- }
- else {
- $value = null;
- }
- }
- elseif (($mode == 'ifd1') && ($tag == 0x0111)) { // TIFFStripOffsets
- if (isset($this->_info['exif']['TIFFStrips'])) {
- $value =& $this->_info['exif']['TIFFStrips'];
- $type = -98;
- }
- else {
- $value = null;
- }
- }
- elseif (($mode == 'ifd1') && ($tag == 0x0117)) { // TIFFStripByteCounts
- if (isset($this->_info['exif']['TIFFStrips'])) {
- $value = strlen($this->_info['exif']['TIFFStrips']);
- }
- else {
- $value = null;
- }
- }
- elseif (($mode == 'ifd1') && ($tag == 0x0201)) { // TIFFJFIFOffset
- if (isset($this->_info['exif']['JFIFThumbnail'])) {
- $value =& $this->_info['exif']['JFIFThumbnail'];
- $type = -98;
- }
- else {
- $value = null;
- }
- }
- elseif (($mode == 'ifd1') && ($tag == 0x0202)) { // TIFFJFIFLength
- if (isset($this->_info['exif']['JFIFThumbnail'])) {
- $value = strlen($this->_info['exif']['JFIFThumbnail']);
- }
- else {
- $value = null;
- }
- }
- elseif (($mode == 'exif') && ($tag == 0xA005)) { // InteropIFDOffset
- if (isset($this->_info['exif']['InteroperabilityIndex'])) {
- $value =& $this->_getIFDEntries($isBigEndian, "interop");
- $type = -99;
- }
- else {
- $value = null;
- }
- }
- elseif (isset($this->_info['exif'][$name])) {
- $origValue =& $this->_info['exif'][$name];
-
- // This makes it easier to process variable size elements
- if (!is_array($origValue) || isset($origValue['val'])) {
- unset($origValue); // Break the reference
- $origValue = array($this->_info['exif'][$name]);
- }
- $origCount = count($origValue);
-
- if ($origCount == 0 ) {
- $type = -1; // To ignore this field
- }
-
- $value = " ";
-
- switch ($type) {
- case 1: // UBYTE
- if ($count == 0) {
- $count = $origCount;
- }
-
- $j = 0;
- while (($j < $count) && ($j < $origCount)) {
-
- $this->_putByte($value, $j, $origValue[$j]);
- $j++;
- }
-
- while ($j < $count) {
- $this->_putByte($value, $j, 0);
- $j++;
- }
- break;
- case 2: // ASCII
- $v = strval($origValue[0]);
- if (($count != 0) && (strlen($v) > $count)) {
- $v = substr($v, 0, $count);
- }
- elseif (($count > 0) && (strlen($v) < $count)) {
- $v = str_pad($v, $count, "\0");
- }
-
- $count = strlen($v);
-
- $this->_putString($value, 0, $v);
- break;
- case 3: // USHORT
- if ($count == 0) {
- $count = $origCount;
- }
-
- $j = 0;
- while (($j < $count) && ($j < $origCount)) {
- $this->_putShort($value, $j * 2, $origValue[$j], $isBigEndian);
- $j++;
- }
-
- while ($j < $count) {
- $this->_putShort($value, $j * 2, 0, $isBigEndian);
- $j++;
- }
- break;
- case 4: // ULONG
- if ($count == 0) {
- $count = $origCount;
- }
-
- $j = 0;
- while (($j < $count) && ($j < $origCount)) {
- $this->_putLong($value, $j * 4, $origValue[$j], $isBigEndian);
- $j++;
- }
-
- while ($j < $count) {
- $this->_putLong($value, $j * 4, 0, $isBigEndian);
- $j++;
- }
- break;
- case 5: // URATIONAL
- if ($count == 0) {
- $count = $origCount;
- }
-
- $j = 0;
- while (($j < $count) && ($j < $origCount)) {
- $v = $origValue[$j];
- if (is_array($v)) {
- $a = $v['num'];
- $b = $v['den'];
- }
- else {
- $a = 0;
- $b = 0;
- // TODO: Allow other types and convert them
- }
- $this->_putLong($value, $j * 8, $a, $isBigEndian);
- $this->_putLong($value, ($j * 8) + 4, $b, $isBigEndian);
- $j++;
- }
-
- while ($j < $count) {
- $this->_putLong($value, $j * 8, 0, $isBigEndian);
- $this->_putLong($value, ($j * 8) + 4, 0, $isBigEndian);
- $j++;
- }
- break;
- case 6: // SBYTE
- if ($count == 0) {
- $count = $origCount;
- }
-
- $j = 0;
- while (($j < $count) && ($j < $origCount)) {
- $this->_putByte($value, $j, $origValue[$j]);
- $j++;
- }
-
- while ($j < $count) {
- $this->_putByte($value, $j, 0);
- $j++;
- }
- break;
- case 7: // UNDEFINED
- $v = strval($origValue[0]);
- if (($count != 0) && (strlen($v) > $count)) {
- $v = substr($v, 0, $count);
- }
- elseif (($count > 0) && (strlen($v) < $count)) {
- $v = str_pad($v, $count, "\0");
- }
-
- $count = strlen($v);
-
- $this->_putString($value, 0, $v);
- break;
- case 8: // SSHORT
- if ($count == 0) {
- $count = $origCount;
- }
-
- $j = 0;
- while (($j < $count) && ($j < $origCount)) {
- $this->_putShort($value, $j * 2, $origValue[$j], $isBigEndian);
- $j++;
- }
-
- while ($j < $count) {
- $this->_putShort($value, $j * 2, 0, $isBigEndian);
- $j++;
- }
- break;
- case 9: // SLONG
- if ($count == 0) {
- $count = $origCount;
- }
-
- $j = 0;
- while (($j < $count) && ($j < $origCount)) {
- $this->_putLong($value, $j * 4, $origValue[$j], $isBigEndian);
- $j++;
- }
-
- while ($j < $count) {
- $this->_putLong($value, $j * 4, 0, $isBigEndian);
- $j++;
- }
- break;
- case 10: // SRATIONAL
- if ($count == 0) {
- $count = $origCount;
- }
-
- $j = 0;
- while (($j < $count) && ($j < $origCount)) {
- $v = $origValue[$j];
- if (is_array($v)) {
- $a = $v['num'];
- $b = $v['den'];
- }
- else {
- $a = 0;
- $b = 0;
- // TODO: Allow other types and convert them
- }
-
- $this->_putLong($value, $j * 8, $a, $isBigEndian);
- $this->_putLong($value, ($j * 8) + 4, $b, $isBigEndian);
- $j++;
- }
-
- while ($j < $count) {
- $this->_putLong($value, $j * 8, 0, $isBigEndian);
- $this->_putLong($value, ($j * 8) + 4, 0, $isBigEndian);
- $j++;
- }
- break;
- case 11: // FLOAT
- if ($count == 0) {
- $count = $origCount;
- }
-
- $j = 0;
- while (($j < $count) && ($j < $origCount)) {
- $v = strval($origValue[$j]);
- if (strlen($v) > 4) {
- $v = substr($v, 0, 4);
- }
- elseif (strlen($v) < 4) {
- $v = str_pad($v, 4, "\0");
- }
- $this->_putString($value, $j * 4, $v);
- $j++;
- }
-
- while ($j < $count) {
- $this->_putString($value, $j * 4, "\0\0\0\0");
- $j++;
- }
- break;
- case 12: // DFLOAT
- if ($count == 0) {
- $count = $origCount;
- }
-
- $j = 0;
- while (($j < $count) && ($j < $origCount)) {
- $v = strval($origValue[$j]);
- if (strlen($v) > 8) {
- $v = substr($v, 0, 8);
- }
- elseif (strlen($v) < 8) {
- $v = str_pad($v, 8, "\0");
- }
- $this->_putString($value, $j * 8, $v);
- $j++;
- }
-
- while ($j < $count) {
- $this->_putString($value, $j * 8, "\0\0\0\0\0\0\0\0");
- $j++;
- }
- break;
- default:
- $value = null;
- break;
- }
- }
-
- if ($value != null) {
- $ifdEntries[$entryCount] = array();
- $ifdEntries[$entryCount]['tag'] = $tag;
- $ifdEntries[$entryCount]['type'] = $type;
- $ifdEntries[$entryCount]['count'] = $count;
- $ifdEntries[$entryCount]['value'] = $value;
-
- $entryCount++;
- }
- }
-
- return $ifdEntries;
- }
-
- /*************************************************************/
- function _parseMarkerAdobe()
- {
- if (!isset($this->_markers)) {
- $this->_readJPEG();
- }
-
- if ($this->_markers == null) {
- return false;
- }
-
- $data = null;
- $count = count($this->_markers);
- for ($i = 0; $i < $count; $i++) {
- if ($this->_markers[$i]['marker'] == 0xED) {
- $signature = $this->_getFixedString($this->_markers[$i]['data'], 0, 14);
- if ($signature == "Photoshop 3.0\0") {
- $data =& $this->_markers[$i]['data'];
- break;
- }
- }
- }
-
- if ($data == null) {
- $this->_info['adobe'] = false;
- $this->_info['iptc'] = false;
- return false;
- }
- $pos = 14;
- $this->_info['adobe'] = array();
- $this->_info['adobe']['raw'] = array();
- $this->_info['iptc'] = array();
-
- $datasize = strlen($data);
-
- while ($pos < $datasize) {
- $signature = $this->_getFixedString($data, $pos, 4);
- if ($signature != '8BIM')
- return false;
- $pos += 4;
-
- $type = $this->_getShort($data, $pos);
- $pos += 2;
-
- $strlen = $this->_getByte($data, $pos);
- $pos += 1;
- $header = '';
- for ($i = 0; $i < $strlen; $i++) {
- $header .= $data{$pos + $i};
- }
- $pos += $strlen + 1 - ($strlen % 2); // The string is padded to even length, counting the length byte itself
-
- $length = $this->_getLong($data, $pos);
- $pos += 4;
-
- $basePos = $pos;
-
- switch ($type) {
- case 0x0404: // Caption (IPTC Data)
- $pos = $this->_readIPTC($data, $pos);
- if ($pos == false)
- return false;
- break;
- case 0x040A: // CopyrightFlag
- $this->_info['adobe']['CopyrightFlag'] = $this->_getByte($data, $pos);
- $pos += $length;
- break;
- case 0x040B: // ImageURL
- $this->_info['adobe']['ImageURL'] = $this->_getFixedString($data, $pos, $length);
- $pos += $length;
- break;
- case 0x040C: // Thumbnail
- $aux = $this->_getLong($data, $pos);
- $pos += 4;
- if ($aux == 1) {
- $this->_info['adobe']['ThumbnailWidth'] = $this->_getLong($data, $pos);
- $pos += 4;
- $this->_info['adobe']['ThumbnailHeight'] = $this->_getLong($data, $pos);
- $pos += 4;
-
- $pos += 16; // Skip some data
-
- $this->_info['adobe']['ThumbnailData'] = $this->_getFixedString($data, $pos, $length - 28);
- $pos += $length - 28;
- }
- break;
- default:
- break;
- }
-
- // We save all blocks, even those we recognized
- $label = sprintf('8BIM_0x%04x', $type);
- $this->_info['adobe']['raw'][$label] = array();
- $this->_info['adobe']['raw'][$label]['type'] = $type;
- $this->_info['adobe']['raw'][$label]['header'] = $header;
- $this->_info['adobe']['raw'][$label]['data'] =& $this->_getFixedString($data, $basePos, $length);
-
- $pos = $basePos + $length + ($length % 2); // Even padding
- }
-
- }
-
- /*************************************************************/
- function _readIPTC(&$data, $pos = 0)
- {
- $totalLength = strlen($data);
-
- $IPTCTags =& $this->_iptcTagNames();
-
- while ($pos < ($totalLength - 5)) {
- $signature = $this->_getShort($data, $pos);
- if ($signature != 0x1C02)
- return $pos;
- $pos += 2;
-
- $type = $this->_getByte($data, $pos);
- $pos += 1;
- $length = $this->_getShort($data, $pos);
- $pos += 2;
-
- $basePos = $pos;
- $label = '';
-
- if (isset($IPTCTags[$type])) {
- $label = $IPTCTags[$type];
- }
- else {
- $label = sprintf('IPTC_0x%02x', $type);
- }
-
- if ($label != '') {
- if (isset($this->_info['iptc'][$label])) {
- if (!is_array($this->_info['iptc'][$label])) {
- $aux = array();
- $aux[0] = $this->_info['iptc'][$label];
- $this->_info['iptc'][$label] = $aux;
- }
- $this->_info['iptc'][$label][ count($this->_info['iptc'][$label]) ] = $this->_getFixedString($data, $pos, $length);
- }
- else {
- $this->_info['iptc'][$label] = $this->_getFixedString($data, $pos, $length);
- }
- }
-
- $pos = $basePos + $length; // No padding
- }
- return $pos;
- }
-
- /*************************************************************/
- function & _createMarkerAdobe()
- {
- if (isset($this->_info['iptc'])) {
- if (!isset($this->_info['adobe'])) {
- $this->_info['adobe'] = array();
- }
- if (!isset($this->_info['adobe']['raw'])) {
- $this->_info['adobe']['raw'] = array();
- }
- if (!isset($this->_info['adobe']['raw']['8BIM_0x0404'])) {
- $this->_info['adobe']['raw']['8BIM_0x0404'] = array();
- }
- $this->_info['adobe']['raw']['8BIM_0x0404']['type'] = 0x0404;
- $this->_info['adobe']['raw']['8BIM_0x0404']['header'] = "Caption";
- $this->_info['adobe']['raw']['8BIM_0x0404']['data'] =& $this->_writeIPTC();
- }
-
- if (isset($this->_info['adobe']['raw']) && (count($this->_info['adobe']['raw']) > 0)) {
- $data = "Photoshop 3.0\0";
- $pos = 14;
-
- reset($this->_info['adobe']['raw']);
- while (list($key) = each($this->_info['adobe']['raw'])) {
- $pos = $this->_write8BIM(
- $data,
- $pos,
- $this->_info['adobe']['raw'][$key]['type'],
- $this->_info['adobe']['raw'][$key]['header'],
- $this->_info['adobe']['raw'][$key]['data'] );
- }
- }
-
- return $data;
- }
-
- /*************************************************************/
- function _write8BIM(&$data, $pos, $type, $header, &$value)
- {
- $signature = "8BIM";
-
- $pos = $this->_putString($data, $pos, $signature);
- $pos = $this->_putShort($data, $pos, $type);
-
- $len = strlen($header);
-
- $pos = $this->_putByte($data, $pos, $len);
- $pos = $this->_putString($data, $pos, $header);
- if (($len % 2) == 0) { // Even padding, including the length byte
- $pos = $this->_putByte($data, $pos, 0);
- }
-
- $len = strlen($value);
- $pos = $this->_putLong($data, $pos, $len);
- $pos = $this->_putString($data, $pos, $value);
- if (($len % 2) != 0) { // Even padding
- $pos = $this->_putByte($data, $pos, 0);
- }
- return $pos;
- }
-
- /*************************************************************/
- function & _writeIPTC()
- {
- $data = " ";
- $pos = 0;
-
- $IPTCNames =& $this->_iptcNameTags();
-
- reset($this->_info['iptc']);
-
-
- while (list($label) = each($this->_info['iptc'])) {
- $value =& $this->_info['iptc'][$label];
- $type = -1;
-
- if (isset($IPTCNames[$label])) {
- $type = $IPTCNames[$label];
- }
- elseif (substr($label, 0, 7) == "IPTC_0x") {
- $type = hexdec(substr($label, 7, 2));
- }
-
- if ($type != -1) {
- if (is_array($value)) {
- for ($i = 0; $i < count($value); $i++) {
- $pos = $this->_writeIPTCEntry($data, $pos, $type, $value[$i]);
- }
- }
- else {
- $pos = $this->_writeIPTCEntry($data, $pos, $type, $value);
- }
- }
- }
-
- return $data;
- }
-
- /*************************************************************/
- function _writeIPTCEntry(&$data, $pos, $type, &$value)
- {
- $pos = $this->_putShort($data, $pos, 0x1C02);
- $pos = $this->_putByte($data, $pos, $type);
- $pos = $this->_putShort($data, $pos, strlen($value));
- $pos = $this->_putString($data, $pos, $value);
-
- return $pos;
- }
-
- /*************************************************************/
- function _exifTagNames($mode)
- {
- $tags = array();
-
- if ($mode == 'ifd0') {
- $tags[0x010E] = 'ImageDescription';
- $tags[0x010F] = 'Make';
- $tags[0x0110] = 'Model';
- $tags[0x0112] = 'Orientation';
- $tags[0x011A] = 'XResolution';
- $tags[0x011B] = 'YResolution';
- $tags[0x0128] = 'ResolutionUnit';
- $tags[0x0131] = 'Software';
- $tags[0x0132] = 'DateTime';
- $tags[0x013B] = 'Artist';
- $tags[0x013E] = 'WhitePoint';
- $tags[0x013F] = 'PrimaryChromaticities';
- $tags[0x0211] = 'YCbCrCoefficients';
- $tags[0x0212] = 'YCbCrSubSampling';
- $tags[0x0213] = 'YCbCrPositioning';
- $tags[0x0214] = 'ReferenceBlackWhite';
- $tags[0x8298] = 'Copyright';
- $tags[0x8769] = 'ExifIFDOffset';
- $tags[0x8825] = 'GPSIFDOffset';
- }
- if ($mode == 'ifd1') {
- $tags[0x00FE] = 'TIFFNewSubfileType';
- $tags[0x00FF] = 'TIFFSubfileType';
- $tags[0x0100] = 'TIFFImageWidth';
- $tags[0x0101] = 'TIFFImageHeight';
- $tags[0x0102] = 'TIFFBitsPerSample';
- $tags[0x0103] = 'TIFFCompression';
- $tags[0x0106] = 'TIFFPhotometricInterpretation';
- $tags[0x0107] = 'TIFFThreshholding';
- $tags[0x0108] = 'TIFFCellWidth';
- $tags[0x0109] = 'TIFFCellLength';
- $tags[0x010A] = 'TIFFFillOrder';
- $tags[0x010E] = 'TIFFImageDescription';
- $tags[0x010F] = 'TIFFMake';
- $tags[0x0110] = 'TIFFModel';
- $tags[0x0111] = 'TIFFStripOffsets';
- $tags[0x0112] = 'TIFFOrientation';
- $tags[0x0115] = 'TIFFSamplesPerPixel';
- $tags[0x0116] = 'TIFFRowsPerStrip';
- $tags[0x0117] = 'TIFFStripByteCounts';
- $tags[0x0118] = 'TIFFMinSampleValue';
- $tags[0x0119] = 'TIFFMaxSampleValue';
- $tags[0x011A] = 'TIFFXResolution';
- $tags[0x011B] = 'TIFFYResolution';
- $tags[0x011C] = 'TIFFPlanarConfiguration';
- $tags[0x0122] = 'TIFFGrayResponseUnit';
- $tags[0x0123] = 'TIFFGrayResponseCurve';
- $tags[0x0128] = 'TIFFResolutionUnit';
- $tags[0x0131] = 'TIFFSoftware';
- $tags[0x0132] = 'TIFFDateTime';
- $tags[0x013B] = 'TIFFArtist';
- $tags[0x013C] = 'TIFFHostComputer';
- $tags[0x0140] = 'TIFFColorMap';
- $tags[0x0152] = 'TIFFExtraSamples';
- $tags[0x0201] = 'TIFFJFIFOffset';
- $tags[0x0202] = 'TIFFJFIFLength';
- $tags[0x0211] = 'TIFFYCbCrCoefficients';
- $tags[0x0212] = 'TIFFYCbCrSubSampling';
- $tags[0x0213] = 'TIFFYCbCrPositioning';
- $tags[0x0214] = 'TIFFReferenceBlackWhite';
- $tags[0x8298] = 'TIFFCopyright';
- $tags[0x9286] = 'TIFFUserComment';
- }
- elseif ($mode == 'exif') {
- $tags[0x829A] = 'ExposureTime';
- $tags[0x829D] = 'FNumber';
- $tags[0x8822] = 'ExposureProgram';
- $tags[0x8824] = 'SpectralSensitivity';
- $tags[0x8827] = 'ISOSpeedRatings';
- $tags[0x8828] = 'OECF';
- $tags[0x9000] = 'EXIFVersion';
- $tags[0x9003] = 'DatetimeOriginal';
- $tags[0x9004] = 'DatetimeDigitized';
- $tags[0x9101] = 'ComponentsConfiguration';
- $tags[0x9102] = 'CompressedBitsPerPixel';
- $tags[0x9201] = 'ShutterSpeedValue';
- $tags[0x9202] = 'ApertureValue';
- $tags[0x9203] = 'BrightnessValue';
- $tags[0x9204] = 'ExposureBiasValue';
- $tags[0x9205] = 'MaxApertureValue';
- $tags[0x9206] = 'SubjectDistance';
- $tags[0x9207] = 'MeteringMode';
- $tags[0x9208] = 'LightSource';
- $tags[0x9209] = 'Flash';
- $tags[0x920A] = 'FocalLength';
- $tags[0x927C] = 'MakerNote';
- $tags[0x9286] = 'UserComment';
- $tags[0x9290] = 'SubSecTime';
- $tags[0x9291] = 'SubSecTimeOriginal';
- $tags[0x9292] = 'SubSecTimeDigitized';
- $tags[0xA000] = 'FlashPixVersion';
- $tags[0xA001] = 'ColorSpace';
- $tags[0xA002] = 'PixelXDimension';
- $tags[0xA003] = 'PixelYDimension';
- $tags[0xA004] = 'RelatedSoundFile';
- $tags[0xA005] = 'InteropIFDOffset';
- $tags[0xA20B] = 'FlashEnergy';
- $tags[0xA20C] = 'SpatialFrequencyResponse';
- $tags[0xA20E] = 'FocalPlaneXResolution';
- $tags[0xA20F] = 'FocalPlaneYResolution';
- $tags[0xA210] = 'FocalPlaneResolutionUnit';
- $tags[0xA214] = 'SubjectLocation';
- $tags[0xA215] = 'ExposureIndex';
- $tags[0xA217] = 'SensingMethod';
- $tags[0xA300] = 'FileSource';
- $tags[0xA301] = 'SceneType';
- $tags[0xA302] = 'CFAPattern';
- }
- elseif ($mode == 'interop') {
- $tags[0x0001] = 'InteroperabilityIndex';
- $tags[0x0002] = 'InteroperabilityVersion';
- $tags[0x1000] = 'RelatedImageFileFormat';
- $tags[0x1001] = 'RelatedImageWidth';
- $tags[0x1002] = 'RelatedImageLength';
- }
- elseif ($mode == 'gps') {
- $tags[0x0000] = 'GPSVersionID';
- $tags[0x0001] = 'GPSLatitudeRef';
- $tags[0x0002] = 'GPSLatitude';
- $tags[0x0003] = 'GPSLongitudeRef';
- $tags[0x0004] = 'GPSLongitude';
- $tags[0x0005] = 'GPSAltitudeRef';
- $tags[0x0006] = 'GPSAltitude';
- $tags[0x0007] = 'GPSTimeStamp';
- $tags[0x0008] = 'GPSSatellites';
- $tags[0x0009] = 'GPSStatus';
- $tags[0x000A] = 'GPSMeasureMode';
- $tags[0x000B] = 'GPSDOP';
- $tags[0x000C] = 'GPSSpeedRef';
- $tags[0x000D] = 'GPSSpeed';
- $tags[0x000E] = 'GPSTrackRef';
- $tags[0x000F] = 'GPSTrack';
- $tags[0x0010] = 'GPSImgDirectionRef';
- $tags[0x0011] = 'GPSImgDirection';
- $tags[0x0012] = 'GPSMapDatum';
- $tags[0x0013] = 'GPSDestLatitudeRef';
- $tags[0x0014] = 'GPSDestLatitude';
- $tags[0x0015] = 'GPSDestLongitudeRef';
- $tags[0x0016] = 'GPSDestLongitude';
- $tags[0x0017] = 'GPSDestBearingRef';
- $tags[0x0018] = 'GPSDestBearing';
- $tags[0x0019] = 'GPSDestDistanceRef';
- $tags[0x001A] = 'GPSDestDistance';
- }
-
- return $tags;
- }
-
- /*************************************************************/
- function _exifTagTypes($mode)
- {
- $tags = array();
-
- if ($mode == 'ifd0') {
- $tags[0x010E] = array(2, 0); // ImageDescription -> ASCII, Any
- $tags[0x010F] = array(2, 0); // Make -> ASCII, Any
- $tags[0x0110] = array(2, 0); // Model -> ASCII, Any
- $tags[0x0112] = array(3, 1); // Orientation -> SHORT, 1
- $tags[0x011A] = array(5, 1); // XResolution -> RATIONAL, 1
- $tags[0x011B] = array(5, 1); // YResolution -> RATIONAL, 1
- $tags[0x0128] = array(3, 1); // ResolutionUnit -> SHORT
- $tags[0x0131] = array(2, 0); // Software -> ASCII, Any
- $tags[0x0132] = array(2, 20); // DateTime -> ASCII, 20
- $tags[0x013B] = array(2, 0); // Artist -> ASCII, Any
- $tags[0x013E] = array(5, 2); // WhitePoint -> RATIONAL, 2
- $tags[0x013F] = array(5, 6); // PrimaryChromaticities -> RATIONAL, 6
- $tags[0x0211] = array(5, 3); // YCbCrCoefficients -> RATIONAL, 3
- $tags[0x0212] = array(3, 2); // YCbCrSubSampling -> SHORT, 2
- $tags[0x0213] = array(3, 1); // YCbCrPositioning -> SHORT, 1
- $tags[0x0214] = array(5, 6); // ReferenceBlackWhite -> RATIONAL, 6
- $tags[0x8298] = array(2, 0); // Copyright -> ASCII, Any
- $tags[0x8769] = array(4, 1); // ExifIFDOffset -> LONG, 1
- $tags[0x8825] = array(4, 1); // GPSIFDOffset -> LONG, 1
- }
- if ($mode == 'ifd1') {
- $tags[0x00FE] = array(4, 1); // TIFFNewSubfileType -> LONG, 1
- $tags[0x00FF] = array(3, 1); // TIFFSubfileType -> SHORT, 1
- $tags[0x0100] = array(4, 1); // TIFFImageWidth -> LONG (or SHORT), 1
- $tags[0x0101] = array(4, 1); // TIFFImageHeight -> LONG (or SHORT), 1
- $tags[0x0102] = array(3, 3); // TIFFBitsPerSample -> SHORT, 3
- $tags[0x0103] = array(3, 1); // TIFFCompression -> SHORT, 1
- $tags[0x0106] = array(3, 1); // TIFFPhotometricInterpretation -> SHORT, 1
- $tags[0x0107] = array(3, 1); // TIFFThreshholding -> SHORT, 1
- $tags[0x0108] = array(3, 1); // TIFFCellWidth -> SHORT, 1
- $tags[0x0109] = array(3, 1); // TIFFCellLength -> SHORT, 1
- $tags[0x010A] = array(3, 1); // TIFFFillOrder -> SHORT, 1
- $tags[0x010E] = array(2, 0); // TIFFImageDescription -> ASCII, Any
- $tags[0x010F] = array(2, 0); // TIFFMake -> ASCII, Any
- $tags[0x0110] = array(2, 0); // TIFFModel -> ASCII, Any
- $tags[0x0111] = array(4, 0); // TIFFStripOffsets -> LONG (or SHORT), Any (one per strip)
- $tags[0x0112] = array(3, 1); // TIFFOrientation -> SHORT, 1
- $tags[0x0115] = array(3, 1); // TIFFSamplesPerPixel -> SHORT, 1
- $tags[0x0116] = array(4, 1); // TIFFRowsPerStrip -> LONG (or SHORT), 1
- $tags[0x0117] = array(4, 0); // TIFFStripByteCounts -> LONG (or SHORT), Any (one per strip)
- $tags[0x0118] = array(3, 0); // TIFFMinSampleValue -> SHORT, Any (SamplesPerPixel)
- $tags[0x0119] = array(3, 0); // TIFFMaxSampleValue -> SHORT, Any (SamplesPerPixel)
- $tags[0x011A] = array(5, 1); // TIFFXResolution -> RATIONAL, 1
- $tags[0x011B] = array(5, 1); // TIFFYResolution -> RATIONAL, 1
- $tags[0x011C] = array(3, 1); // TIFFPlanarConfiguration -> SHORT, 1
- $tags[0x0122] = array(3, 1); // TIFFGrayResponseUnit -> SHORT, 1
- $tags[0x0123] = array(3, 0); // TIFFGrayResponseCurve -> SHORT, Any (2^BitsPerSample)
- $tags[0x0128] = array(3, 1); // TIFFResolutionUnit -> SHORT, 1
- $tags[0x0131] = array(2, 0); // TIFFSoftware -> ASCII, Any
- $tags[0x0132] = array(2, 20); // TIFFDateTime -> ASCII, 20
- $tags[0x013B] = array(2, 0); // TIFFArtist -> ASCII, Any
- $tags[0x013C] = array(2, 0); // TIFFHostComputer -> ASCII, Any
- $tags[0x0140] = array(3, 0); // TIFFColorMap -> SHORT, Any (3 * 2^BitsPerSample)
- $tags[0x0152] = array(3, 0); // TIFFExtraSamples -> SHORT, Any (SamplesPerPixel - 3)
- $tags[0x0201] = array(4, 1); // TIFFJFIFOffset -> LONG, 1
- $tags[0x0202] = array(4, 1); // TIFFJFIFLength -> LONG, 1
- $tags[0x0211] = array(5, 3); // TIFFYCbCrCoefficients -> RATIONAL, 3
- $tags[0x0212] = array(3, 2); // TIFFYCbCrSubSampling -> SHORT, 2
- $tags[0x0213] = array(3, 1); // TIFFYCbCrPositioning -> SHORT, 1
- $tags[0x0214] = array(5, 6); // TIFFReferenceBlackWhite -> RATIONAL, 6
- $tags[0x8298] = array(2, 0); // TIFFCopyright -> ASCII, Any
- $tags[0x9286] = array(2, 0); // TIFFUserComment -> ASCII, Any
- }
- elseif ($mode == 'exif') {
- $tags[0x829A] = array(5, 1); // ExposureTime -> RATIONAL, 1
- $tags[0x829D] = array(5, 1); // FNumber -> RATIONAL, 1
- $tags[0x8822] = array(3, 1); // ExposureProgram -> SHORT, 1
- $tags[0x8824] = array(2, 0); // SpectralSensitivity -> ASCII, Any
- $tags[0x8827] = array(3, 0); // ISOSpeedRatings -> SHORT, Any
- $tags[0x8828] = array(7, 0); // OECF -> UNDEFINED, Any
- $tags[0x9000] = array(7, 4); // EXIFVersion -> UNDEFINED, 4
- $tags[0x9003] = array(2, 20); // DatetimeOriginal -> ASCII, 20
- $tags[0x9004] = array(2, 20); // DatetimeDigitized -> ASCII, 20
- $tags[0x9101] = array(7, 4); // ComponentsConfiguration -> UNDEFINED, 4
- $tags[0x9102] = array(5, 1); // CompressedBitsPerPixel -> RATIONAL, 1
- $tags[0x9201] = array(10, 1); // ShutterSpeedValue -> SRATIONAL, 1
- $tags[0x9202] = array(5, 1); // ApertureValue -> RATIONAL, 1
- $tags[0x9203] = array(10, 1); // BrightnessValue -> SRATIONAL, 1
- $tags[0x9204] = array(10, 1); // ExposureBiasValue -> SRATIONAL, 1
- $tags[0x9205] = array(5, 1); // MaxApertureValue -> RATIONAL, 1
- $tags[0x9206] = array(5, 1); // SubjectDistance -> RATIONAL, 1
- $tags[0x9207] = array(3, 1); // MeteringMode -> SHORT, 1
- $tags[0x9208] = array(3, 1); // LightSource -> SHORT, 1
- $tags[0x9209] = array(3, 1); // Flash -> SHORT, 1
- $tags[0x920A] = array(5, 1); // FocalLength -> RATIONAL, 1
- $tags[0x927C] = array(7, 0); // MakerNote -> UNDEFINED, Any
- $tags[0x9286] = array(7, 0); // UserComment -> UNDEFINED, Any
- $tags[0x9290] = array(2, 0); // SubSecTime -> ASCII, Any
- $tags[0x9291] = array(2, 0); // SubSecTimeOriginal -> ASCII, Any
- $tags[0x9292] = array(2, 0); // SubSecTimeDigitized -> ASCII, Any
- $tags[0xA000] = array(7, 4); // FlashPixVersion -> UNDEFINED, 4
- $tags[0xA001] = array(3, 1); // ColorSpace -> SHORT, 1
- $tags[0xA002] = array(4, 1); // PixelXDimension -> LONG (or SHORT), 1
- $tags[0xA003] = array(4, 1); // PixelYDimension -> LONG (or SHORT), 1
- $tags[0xA004] = array(2, 13); // RelatedSoundFile -> ASCII, 13
- $tags[0xA005] = array(4, 1); // InteropIFDOffset -> LONG, 1
- $tags[0xA20B] = array(5, 1); // FlashEnergy -> RATIONAL, 1
- $tags[0xA20C] = array(7, 0); // SpatialFrequencyResponse -> UNDEFINED, Any
- $tags[0xA20E] = array(5, 1); // FocalPlaneXResolution -> RATIONAL, 1
- $tags[0xA20F] = array(5, 1); // FocalPlaneYResolution -> RATIONAL, 1
- $tags[0xA210] = array(3, 1); // FocalPlaneResolutionUnit -> SHORT, 1
- $tags[0xA214] = array(3, 2); // SubjectLocation -> SHORT, 2
- $tags[0xA215] = array(5, 1); // ExposureIndex -> RATIONAL, 1
- $tags[0xA217] = array(3, 1); // SensingMethod -> SHORT, 1
- $tags[0xA300] = array(7, 1); // FileSource -> UNDEFINED, 1
- $tags[0xA301] = array(7, 1); // SceneType -> UNDEFINED, 1
- $tags[0xA302] = array(7, 0); // CFAPattern -> UNDEFINED, Any
- }
- elseif ($mode == 'interop') {
- $tags[0x0001] = array(2, 0); // InteroperabilityIndex -> ASCII, Any
- $tags[0x0002] = array(7, 4); // InteroperabilityVersion -> UNKNOWN, 4
- $tags[0x1000] = array(2, 0); // RelatedImageFileFormat -> ASCII, Any
- $tags[0x1001] = array(4, 1); // RelatedImageWidth -> LONG (or SHORT), 1
- $tags[0x1002] = array(4, 1); // RelatedImageLength -> LONG (or SHORT), 1
- }
- elseif ($mode == 'gps') {
- $tags[0x0000] = array(1, 4); // GPSVersionID -> BYTE, 4
- $tags[0x0001] = array(2, 2); // GPSLatitudeRef -> ASCII, 2
- $tags[0x0002] = array(5, 3); // GPSLatitude -> RATIONAL, 3
- $tags[0x0003] = array(2, 2); // GPSLongitudeRef -> ASCII, 2
- $tags[0x0004] = array(5, 3); // GPSLongitude -> RATIONAL, 3
- $tags[0x0005] = array(2, 2); // GPSAltitudeRef -> ASCII, 2
- $tags[0x0006] = array(5, 1); // GPSAltitude -> RATIONAL, 1
- $tags[0x0007] = array(5, 3); // GPSTimeStamp -> RATIONAL, 3
- $tags[0x0008] = array(2, 0); // GPSSatellites -> ASCII, Any
- $tags[0x0009] = array(2, 2); // GPSStatus -> ASCII, 2
- $tags[0x000A] = array(2, 2); // GPSMeasureMode -> ASCII, 2
- $tags[0x000B] = array(5, 1); // GPSDOP -> RATIONAL, 1
- $tags[0x000C] = array(2, 2); // GPSSpeedRef -> ASCII, 2
- $tags[0x000D] = array(5, 1); // GPSSpeed -> RATIONAL, 1
- $tags[0x000E] = array(2, 2); // GPSTrackRef -> ASCII, 2
- $tags[0x000F] = array(5, 1); // GPSTrack -> RATIONAL, 1
- $tags[0x0010] = array(2, 2); // GPSImgDirectionRef -> ASCII, 2
- $tags[0x0011] = array(5, 1); // GPSImgDirection -> RATIONAL, 1
- $tags[0x0012] = array(2, 0); // GPSMapDatum -> ASCII, Any
- $tags[0x0013] = array(2, 2); // GPSDestLatitudeRef -> ASCII, 2
- $tags[0x0014] = array(5, 3); // GPSDestLatitude -> RATIONAL, 3
- $tags[0x0015] = array(2, 2); // GPSDestLongitudeRef -> ASCII, 2
- $tags[0x0016] = array(5, 3); // GPSDestLongitude -> RATIONAL, 3
- $tags[0x0017] = array(2, 2); // GPSDestBearingRef -> ASCII, 2
- $tags[0x0018] = array(5, 1); // GPSDestBearing -> RATIONAL, 1
- $tags[0x0019] = array(2, 2); // GPSDestDistanceRef -> ASCII, 2
- $tags[0x001A] = array(5, 1); // GPSDestDistance -> RATIONAL, 1
- }
-
- return $tags;
- }
-
- /*************************************************************/
- function _exifNameTags($mode)
- {
- $tags = $this->_exifTagNames($mode);
- return $this->_names2Tags($tags);
- }
-
- /*************************************************************/
- function _iptcTagNames()
- {
- $tags = array();
- $tags[0x14] = 'SuplementalCategories';
- $tags[0x19] = 'Keywords';
- $tags[0x78] = 'Caption';
- $tags[0x7A] = 'CaptionWriter';
- $tags[0x69] = 'Headline';
- $tags[0x28] = 'SpecialInstructions';
- $tags[0x0F] = 'Category';
- $tags[0x50] = 'Byline';
- $tags[0x55] = 'BylineTitle';
- $tags[0x6E] = 'Credit';
- $tags[0x73] = 'Source';
- $tags[0x74] = 'CopyrightNotice';
- $tags[0x05] = 'ObjectName';
- $tags[0x5A] = 'City';
- $tags[0x5C] = 'Sublocation';
- $tags[0x5F] = 'ProvinceState';
- $tags[0x65] = 'CountryName';
- $tags[0x67] = 'OriginalTransmissionReference';
- $tags[0x37] = 'DateCreated';
- $tags[0x0A] = 'CopyrightFlag';
-
- return $tags;
- }
-
- /*************************************************************/
- function & _iptcNameTags()
- {
- $tags = $this->_iptcTagNames();
- return $this->_names2Tags($tags);
- }
-
- /*************************************************************/
- function _names2Tags($tags2Names)
- {
- $names2Tags = array();
- reset($tags2Names);
- while (list($tag, $name) = each($tags2Names)) {
- $names2Tags[$name] = $tag;
- }
-
- return $names2Tags;
- }
-
- /*************************************************************/
- function _getByte(&$data, $pos)
- {
- return ord($data{$pos});
- }
-
- /*************************************************************/
- function _putByte(&$data, $pos, $val)
- {
- $val = intval($val);
-
- $data{$pos} = chr($val);
-
- return $pos + 1;
- }
-
- /*************************************************************/
- function _getShort(&$data, $pos, $bigEndian = true)
- {
- if ($bigEndian) {
- return (ord($data{$pos}) << 8)
- + ord($data{$pos + 1});
- }
- else {
- return ord($data{$pos})
- + (ord($data{$pos + 1}) << 8);
- }
- }
-
- /*************************************************************/
- function _putShort(&$data, $pos = 0, $val, $bigEndian = true)
- {
- $val = intval($val);
-
- if ($bigEndian) {
- $data{$pos + 0} = chr(($val & 0x0000FF00) >> 8);
- $data{$pos + 1} = chr(($val & 0x000000FF) >> 0);
- }
- else {
- $data{$pos + 0} = chr(($val & 0x00FF) >> 0);
- $data{$pos + 1} = chr(($val & 0xFF00) >> 8);
- }
-
- return $pos + 2;
- }
-
- /*************************************************************/
- function _getLong(&$data, $pos, $bigEndian = true)
- {
- if ($bigEndian) {
- return (ord($data{$pos}) << 24)
- + (ord($data{$pos + 1}) << 16)
- + (ord($data{$pos + 2}) << 8)
- + ord($data{$pos + 3});
- }
- else {
- return ord($data{$pos})
- + (ord($data{$pos + 1}) << 8)
- + (ord($data{$pos + 2}) << 16)
- + (ord($data{$pos + 3}) << 24);
- }
- }
-
- /*************************************************************/
- function _putLong(&$data, $pos, $val, $bigEndian = true)
- {
- $val = intval($val);
-
- if ($bigEndian) {
- $data{$pos + 0} = chr(($val & 0xFF000000) >> 24);
- $data{$pos + 1} = chr(($val & 0x00FF0000) >> 16);
- $data{$pos + 2} = chr(($val & 0x0000FF00) >> 8);
- $data{$pos + 3} = chr(($val & 0x000000FF) >> 0);
- }
- else {
- $data{$pos + 0} = chr(($val & 0x000000FF) >> 0);
- $data{$pos + 1} = chr(($val & 0x0000FF00) >> 8);
- $data{$pos + 2} = chr(($val & 0x00FF0000) >> 16);
- $data{$pos + 3} = chr(($val & 0xFF000000) >> 24);
- }
-
- return $pos + 4;
- }
-
- /*************************************************************/
- function & _getNullString(&$data, $pos)
- {
- $str = '';
- $max = strlen($data);
-
- while ($pos < $max) {
- if (ord($data{$pos}) == 0) {
- return $str;
- }
- else {
- $str .= $data{$pos};
- }
- $pos++;
- }
-
- return $str;
- }
-
- /*************************************************************/
- function & _getFixedString(&$data, $pos, $length = -1)
- {
- if ($length == -1) {
- $length = strlen($data) - $pos;
- }
-
- return substr($data, $pos, $length);
- }
-
- /*************************************************************/
- function _putString(&$data, $pos, &$str)
- {
- $len = strlen($str);
- for ($i = 0; $i < $len; $i++) {
- $data{$pos + $i} = $str{$i};
- }
-
- return $pos + $len;
- }
-
- /*************************************************************/
- function _hexDump(&$data, $start = 0, $length = -1)
- {
- if (($length == -1) || (($length + $start) > strlen($data))) {
- $end = strlen($data);
- }
- else {
- $end = $start + $length;
- }
-
- $ascii = '';
- $count = 0;
-
- echo "<tt>\n";
-
- while ($start < $end) {
- if (($count % 16) == 0) {
- echo sprintf('%04d', $count) . ': ';
- }
-
- $c = ord($data{$start});
- $count++;
- $start++;
-
- $aux = dechex($c);
- if (strlen($aux) == 1)
- echo '0';
- echo $aux . ' ';
-
- if ($c == 60)
- $ascii .= '&lt;';
- elseif ($c == 62)
- $ascii .= '&gt;';
- elseif ($c == 32)
- $ascii .= '&nbsp;';
- elseif ($c > 32)
- $ascii .= chr($c);
- else
- $ascii .= '.';
-
- if (($count % 4) == 0) {
- echo ' - ';
- }
-
- if (($count % 16) == 0) {
- echo ': ' . $ascii . "<br>\n";
- $ascii = '';
- }
- }
-
- if ($ascii != '') {
- while (($count % 16) != 0) {
- echo '-- ';
- $count++;
- if (($count % 4) == 0) {
- echo ' - ';
- }
- }
- echo ': ' . $ascii . "<br>\n";
- }
-
- echo "</tt>\n";
- }
-
-/*****************************************************************/
-}
-
-/* vim: set expandtab tabstop=4 shiftwidth=4: */
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 02:48:29 +0000