diff options
Diffstat (limited to 'lib/dokuwiki/inc/JpegMeta.php')
| -rw-r--r-- | lib/dokuwiki/inc/JpegMeta.php | 3116 |
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) - $ascii .= '<'; - elseif ($c == 62) - $ascii .= '>'; - elseif ($c == 32) - $ascii .= ' '; - elseif ($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: */ - |