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<?php/*************************Coppermine Photo Gallery************************Copyright (c) 2003-2005 Coppermine Dev Teamv1.1 originaly written by Gregory DEMARThis program is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe Free Software Foundation; either version 2 of the License, or(at your option) any later version.********************************************Coppermine version: 1.3.3$Source: /cvsroot/coppermine/stable/include/exifReader.inc.php,v $$Revision: 1.4 $$Author: gaugau $$Date: 2005/04/19 03:17:11 $**********************************************//*** PHP Class to read EXIF information* that most of the digital camera produce** This class is based on jhead (in C) by Matthias Wandel** Vinay Yadav (vinayRas) < vinay@sanisoft.com >* http://www.sanisoft.com/phpexifrw/** For more information on EXIF* http://www.exif.org/** Features:* - Read Exif Information* - Extract and display emdedded thumbnails** Tested With- Sony- Cybershot (Sony)- DSC-D700- PowerShotA5- SANYO Electric Co.,Ltd- SR6- SX113- OLYMPUS OPTICAL CO.,LTD- C960Z,D460Z- CanonPowerShot A40 (Canon)Canon DIGITAL IXUS- RICOH- Caplio RR30- RDC-5300- NIKON- D100 (NIKON CORPORATION)- E5700 (NIKON)- E950- CASIO QV-8000SX- KODAK- DC290 Zoom Digital Camera (V01.00) [Eastman Kodak Company]- DC210 Zoom (V05.00) [Eastman Kodak Company]- KODAK DC240 ZOOM DIGITAL CAMERA- FujiFilmDX10FinePix40iMX-1700ZOOM***//** * Start Of Frame N */define("M_SOF0",0xC0);/** * N indicates which compression process */define("M_SOF1",0xC1);/** * Only SOF0-SOF2 are now in common use */define("M_SOF2",0xC2);/** * */define("M_SOF3",0xC3);/** * NB: codes C4 and CC are NOT SOF markers */define("M_SOF5",0xC5);/** * */define("M_SOF6",0xC6);/** * */define("M_SOF7",0xC7);/** * */define("M_SOF9",0xC9);/** * */define("M_SOF10",0xCA);/** * */define("M_SOF11",0xCB);/** * */define("M_SOF13",0xCD);/** * */define("M_SOF14",0xCE);/** * */define("M_SOF15",0xCF);/** * Start Of Image (beginning of datastream) */define("M_SOI",0xD8);/** * End Of Image (end of datastream) */define("M_EOI",0xD9);/** * Start Of Scan (begins compressed data) */define("M_SOS",0xDA);/** * Jfif marker */define("M_JFIF",0xE0);/** * Exif marker */define("M_EXIF",0xE1);/** * Image Title -- */define("M_COM",0xFE);define("NUM_FORMATS","12");/** * Tag Data Format */define("FMT_BYTE","1");/** * ASCII */define("FMT_STRING","2");/** * Short */define("FMT_USHORT","3");/** * Long */define("FMT_ULONG","4");/** * Rational */define("FMT_URATIONAL","5");/** * Byte */define("FMT_SBYTE","6");/** * Undefined */define("FMT_UNDEFINED","7");/** * Short */define("FMT_SSHORT","8");/** * Long */define("FMT_SLONG","9");/** * Rational */define("FMT_SRATIONAL","10");/** * Single */define("FMT_SINGLE","11");/** * Double */define("FMT_DOUBLE","12");/** * Exif IFD */define("TAG_EXIF_OFFSET","0x8769");/** * Interoperability tag */define("TAG_INTEROP_OFFSET","0xa005");/** * Image input equipment manufacturer */define("TAG_MAKE","0x010F");/** * Image input equipment model */define("TAG_MODEL","0x0110");/** * Orientation of image */define("TAG_ORIENTATION","0x0112");/** * Exposure Time */define("TAG_EXPOSURETIME","0x829A");/** * F Number */define("TAG_FNUMBER","0x829D");/** * Shutter Speed */define("TAG_SHUTTERSPEED","0x9201");/** * Aperture */define("TAG_APERTURE","0x9202");/** * Aperture */define("TAG_MAXAPERTURE","0x9205");/** * Lens Focal Length */define("TAG_FOCALLENGTH","0x920A");/** * The date and time when the original image data was generated. */define("TAG_DATETIME_ORIGINAL","0x9003");/** * User Comments */define("TAG_USERCOMMENT","0x9286");/** * subject Location */define("TAG_SUBJECT_DISTANCE","0x9206");/** * Flash */define("TAG_FLASH","0x9209");/** * Focal Plane X Resolution */define("TAG_FOCALPLANEXRES","0xa20E");/** * Focal Plane Resolution Units */define("TAG_FOCALPLANEUNITS","0xa210");/** * Image Width */define("TAG_EXIF_IMAGEWIDTH","0xA002");/** * Image Height */define("TAG_EXIF_IMAGELENGTH","0xA003");/** * Exposure Bias */define("TAG_EXPOSURE_BIAS","0x9204");/** * Light Source */define("TAG_WHITEBALANCE","0x9208");/** * Metering Mode */define("TAG_METERING_MODE","0x9207");/** * Exposure Program */define("TAG_EXPOSURE_PROGRAM","0x8822");/** * ISO Equivalent Speed Rating */define("TAG_ISO_EQUIVALENT","0x8827");/** * Compressed Bits Per Pixel */define("TAG_COMPRESSION_LEVEL","0x9102");/** * Thumbnail Start Offset */define("TAG_THUMBNAIL_OFFSET","0x0201");/** * Thumbnail Length */define("TAG_THUMBNAIL_LENGTH","0x0202");/** * Image Marker */define("PSEUDO_IMAGE_MARKER",0x123);/** * Max Image Title Length */define("MAX_COMMENT",2000);define("TAG_ARTIST","0x013B");define("TAG_COPYRIGHT","0x8298");//--------------------------------define("TAG_IMAGE_WD","0x0100"); // image widthdefine("TAG_IMAGE_HT","0x0101"); // image heightdefine("TAG_IMAGE_BPS","0x0102"); // Bits Per sampledefine("TAG_IMAGE_PHOTO_INT","0x0106"); // photometricinterpretationdefine("TAG_IMAGE_SOFFSET","0x0111"); // stripoffsetsdefine("TAG_IMAGE_SPP","0x0115"); // Samples per pixel - 277define("TAG_IMAGE_RPS","0x0116"); // RowsPerStrip - 278define("TAG_IMAGE_SBC","0x0117"); // StripByteCounts - 279define("TAG_IMAGE_P_CONFIG","0x011C"); // Planar Configuration - 284define("TAG_IMAGE_DESC","0x010E"); // image titledefine("TAG_X_RESOLUTION","0x011A"); // Image resolution in width directiondefine("TAG_Y_RESOLUTION","0x011B"); // Image resolution in height directiondefine("TAG_RESOLUTION_UNIT","0x0128"); // Unit of X and Y resolutiondefine("TAG_SOFTWARE","0x0131"); // Software useddefine("TAG_FILE_MODDATE","0x0132"); // DateTime File change date and timedefine("TAG_YCBCR_POSITIONING","0x0213"); // Y and C positioningdefine("TAG_EXIF_VERSION","0x9000"); // Exif versiondefine("TAG_DATE_TIME_DIGITIZED","0x9004"); // Date and time of digital datadefine("TAG_COMPONENT_CONFIG","0x9101"); // Component configurationdefine("TAG_MAKER_NOTE","0x927C");define("TAG_SUB_SEC_TIME","0x9290");define("TAG_SUB_SEC_TIME_ORIG","0x9291");define("TAG_SUB_SEC_TIME_DIGITIZED","0x9292");define("TAG_FLASHPIX_VER","0xA000"); //FlashPixVersiondefine("TAG_COLOR_SPACE","0xA001"); //ColorSpacedefine("TAG_RELATED_SOUND_FILE","0xA004"); //Related audio filedefine("TAG_GPS_LATITUDE_REF","0x0001"); //define("TAG_GPS_LATITUDE","0x0002"); //define("TAG_SENSING_METHOD","0xA217"); // SensingMethoddefine("TAG_SOUCE_TYPE","0xA300"); // FileSourcedefine("TAG_SCENE_TYPE","0xA301"); // SceneTypedefine("TAG_CFA_PATTERN","0xA302"); // CFA Pattern/** Tags in EXIF 2.2 Only */define("TAG_COMPRESS_SCHEME","0x0103"); //define("TAG_CUSTOM_RENDERED","0xA401"); // CustomRendereddefine("TAG_EXPOSURE_MODE","0xA402"); // Exposure mode ExposureModedefine("TAG_WHITE_BALANCE","0xA403"); // White balance WhiteBalancedefine("TAG_DIGITAL_ZOOM_RATIO","0xA404"); // Digital zoom ratio DigitalZoomRatiodefine("TAG_FLENGTH_IN35MM","0xA405"); // Focal length in 35 mm film FocalLengthIn35mmFilmdefine("TAG_SCREEN_CAP_TYPE","0xA406"); // Scene capture type SceneCaptureTypedefine("TAG_GAIN_CONTROL","0xA407"); //Gain controldefine("TAG_CONTRAST","0xA408"); // Contrastdefine("TAG_SATURATION","0xA409"); // Saturationdefine("TAG_SHARPNESS","0xA40A"); // Sharpnessdefine("TAG_DEVICE_SETTING_DESC","0xA40B"); // SDevice settings description DeviceSettingDescriptiondefine("TAG_DIST_RANGE","0xA40C"); //Subject distance range SubjectDistanceRangedefine("TAG_FOCALPLANE_YRESOL","0xA20F");; //FocalPlaneYResolutiondefine("TAG_BRIGHTNESS","0x9203");; //Brightness//--------------------------------/** error Description *//**1 - File does not exists!2 -3 - Filename not provided10 - too many padding bytes11 - "invalid marker"12 - Premature end of file?51 - "Illegal subdirectory link"52 - "NOT EXIF FORMAT"53 - "Invalid Exif alignment marker.\n"54 - "Invalid Exif start (1)"*//*** PHP Class to read, write and transfer EXIF information* that most of the digital camera produces* Currenty it can only read JPEG file.*//*** @author Vinay Yadav (vinayRas) < vinay@sanisoft.com >** @todo Writing exif information to the file.* @todo Add EXIF audio reading methods (I think it exists!)* @todo Support of additional tags.* @todo Handling Unicode character in UserComment tag of EXif Information.** @version 0.5* @licence http://opensource.org/licenses/lgpl-license.php GNU LGPL*/class phpExifReader {/**** Array containg all Exif and JPEG image attributes* into regular expressions for themselves.* $ImageInfo[TAG] = TAG_VALUE;** @var array* @access private**/var $ImageInfo = array();var $MotorolaOrder = 0;var $ExifImageWidth = 0; //var $FocalplaneXRes = 0; //var $FocalplaneUnits = 0; //var $sections = array();var $currSection = 0; /** Stores total number fo Sections */var $BytesPerFormat = array(0,1,1,2,4,8,1,1,2,4,8,4,8);var $ReadMode = array("READ_EXIF" => 1,"READ_IMAGE" => 2,"READ_ALL" => 3);var $ImageReadMode = 3; /** related to $RealMode arrays values */var $file = ""; /** JPEG file to parse for EXIF data */var $newFile = 1; /** flag to check if the current file has been parsed or not. */var $thumbnail = ""; /* Name of thumbnail */var $thumbnailURL = ""; /* */var $exifSection = -1; // mark the exif section index out of all sectionsvar $errno = 0;var $errstr = "";var $debug = false;// Caching ralated variablesvar $caching = false; /* Should cacheing of image thumnails be allowed? */var $cacheDir = ""; /* Checkout constructor for default path. *//*** Constructor* @param string File name to be parsed.**/function phpExifReader($file = "") {$this->timeStart = $this->cpgGetMicroTime();if(!empty($file)) {$this->file = $file;}/*** Initialize some variables. Avoid lots of errors with fulll error_reporting*/$this->ExifImageLength = 0;$this->ImageInfo['h']["resolutionUnit"] = 0;$this->ImageInfo[TAG_MAXAPERTURE] = 0;$this->ImageInfo[TAG_ISO_EQUIVALENT] = 0;$this->ImageInfo[TAG_ORIENTATION] = 0;$this->ThumbnailSize = 0;if($this->caching) {$this->cacheDir = dirname(__FILE__)."/.cache_thumbs";/*** If Cache directory does not exists then attempt to create it.*/if(!is_dir($this->cacheDir)) {mkdir($this->cacheDir);}// Prepare the ame of thumbnailif(is_dir($this->cacheDir)) {$this->thumbnail = $this->cacheDir."/".basename($this->file);$this->thumbnailURL = ".cache_thumbs/".basename($this->file);}}/** check if file exists! */if(!file_exists($this->file)) {$this->errno = 1;$this->errstr = "File '".$this->file."' does not exists!";}$this->currSection = 0;$this->processFile();}/*** Show Debugging information** @param string Debugging message to display* @param int Type of error (0 - Warning, 1 - Error)* @return void**/function debug($str,$TYPE = 0,$file="",$line=0) {if($this->debug) {echo "<br>[$file:$line:".($this->getDiffTime())."]$str";flush();if($TYPE == 1) {exit;}}}/*** Processes the whole file.**/function processFile() {/** dont reparse the whole file. */if(!$this->newFile) return true;if(!file_exists($this->file)) {echo "<br>Error: File ".($this->file)."does not exists!";exit;}$this->debug("Stating Processing of ".$this->newFile,0,__FILE__,__LINE__);$i = 0; $exitAll = 0;/** Open the JPEG in binary safe reading mode */$fp = fopen($this->file,"rb");$this->ImageInfo["h"]["FileName"] = $this->file;$this->ImageInfo["h"]["FileSize"] = filesize($this->file); /** Size of the File */$this->ImageInfo["h"]["FileDateTime"] = filectime($this->file); /** File node change time *//** check whether jped image or not */$a = fgetc($fp);if (ord($a) != 0xff || ord(fgetc($fp)) != M_SOI){$this->debug("Not a JPEG FILE",1);$this->errorno = 1;$this->errorstr = "File '".$this->file."' is not a JPEG File!";}$tmpTestLevel = 0;/** Examines each byte one-by-one */while(!feof($fp)) {$data = array();for ($a=0;$a<7;$a++){$marker = fgetc($fp);if (ord($marker) != 0xff) break;if ($a >= 6){$this->errno = 10;$this->errstr = "too many padding bytes!";$this->debug($this->errstr,1);return false;}}if (ord($marker) == 0xff){// 0xff is legal padding, but if we get that many, something's wrong.$this->errno = 10;$this->errstr = "too many padding bytes!";$this->debug($this->errstr,1);}$marker = ord($marker);$this->sections[$this->currSection]["type"] = $marker;// Read the length of the section.$lh = ord(fgetc($fp));$ll = ord(fgetc($fp));$itemlen = ($lh << 8) | $ll;if ($itemlen < 2){$this->errno = 11;$this->errstr = "invalid marker";$this->debug($this->errstr,1);}$this->sections[$this->currSection]["size"] = $itemlen;$tmpDataArr = array(); /** Temporary Array */$tmpStr = fread($fp,$itemlen-2);/*$tmpDataArr[] = chr($lh);$tmpDataArr[] = chr($ll);$chars = preg_split('//', $tmpStr, -1, PREG_SPLIT_NO_EMPTY);$tmpDataArr = array_merge($tmpDataArr,$chars);$data = $tmpDataArr;*/$data = chr($lh).chr($ll).$tmpStr;//$this->sections[$this->currSection]["data"] = $data;$this->debug("<hr><h1>".$this->currSection.":</h1>");//print_r($data);$this->debug("<hr>");//if(count($data) != $itemlen) {if(strlen($data) != $itemlen) {$this->errno = 12;$this->errstr = "Premature end of file?";$this->debug($this->errstr,1);}$this->currSection++; /** */switch($marker) {case M_SOS:$this->debug("<br>Found '".M_SOS."' Section, Prcessing it... <br>");;// If reading entire image is requested, read the rest of the data.if ($this->ImageReadMode & $this->ReadMode["READ_IMAGE"]){// Determine how much file is left.$cp = ftell($fp);fseek($fp,0, SEEK_END);$ep = ftell($fp);fseek($fp, $cp, SEEK_SET);$size = $ep-$cp;$got = fread($fp, $size);$this->sections[$this->currSection]["data"] = $got;$this->sections[$this->currSection]["size"] = $size;$this->sections[$this->currSection]["type"] = PSEUDO_IMAGE_MARKER;$this->currSection++;$HaveAll = 1;$exitAll =1;}$this->debug("<br>'".M_SOS."' Section, PROCESSED<br>");break;case M_COM: // Comment section$this->debug("<br>Found '".M_COM."'(Comment) Section, Processing<br>");$this->process_COM($data, $itemlen);$this->debug("<br>'".M_COM."'(Comment) Section, PROCESSED<br>");$tmpTestLevel++;break;case M_SOI:$this->debug(" <br> === START OF IMAGE =====<br>");break;case M_EOI:$this->debug(" <br>=== END OF IMAGE =====<br> ");break;case M_JFIF:// Regular jpegs always have this tag, exif images have the exif// marker instead, althogh ACDsee will write images with both markers.// this program will re-create this marker on absence of exif marker.// hence no need to keep the copy from the file.//echo " <br> === M_JFIF =====<br>";$this->sections[--$this->currSection]["data"] = "";break;case M_EXIF:// Seen files from some 'U-lead' software with Vivitar scanner// that uses marker 31 for non exif stuff. Thus make sure// it says 'Exif' in the section before treating it as exif.$this->debug("<br>Found '".M_EXIF."'(Exif) Section, Proccessing<br>");$this->exifSection = $this->currSection-1;if (($this->ImageReadMode & $this->ReadMode["READ_EXIF"]) && ($data[2].$data[3].$data[4].$data[5]) == "Exif"){$this->process_EXIF($data, $itemlen);}else{// Discard this section.$this->sections[--$this->currSection]["data"] = "";}$this->debug("<br>'".M_EXIF."'(Exif) Section, PROCESSED<br>");$tmpTestLevel++;break;case M_SOF0:case M_SOF1:case M_SOF2:case M_SOF3:case M_SOF5:case M_SOF6:case M_SOF7:case M_SOF9:case M_SOF10:case M_SOF11:case M_SOF13:case M_SOF14:case M_SOF15:$this->debug("<br>Found M_SOFn Section, Processing<br>");$this->process_SOFn($data,$marker);$this->debug("<br>M_SOFn Section, PROCESSED<br>");break;default:$this->debug("DEFAULT: Jpeg section marker 0x$marker x size $itemlen\n");}$i++;if($exitAll == 1) break;//if($tmpTestLevel == 2) break;}fclose($fp);$this->newFile = 0;}/*** Changing / Assiging new file* @param string JPEG file to process**/function assign($file) {if(!empty($file)) {$this->file = $file;}/** check for existance of file! */if(!file_exists($this->file)) {$this->errorno = 1;$this->errorstr = "File '".$this->file."' does not exists!";}$this->newFile = 1;}/*** Process SOFn section of Image* @param array An array containing whole section.* @param hex Marker to specify the type of section.**/function process_SOFn($data,$marker) {$data_precision = 0;$num_components = 0;$data_precision = ord($data[2]);if($this->debug) {print("Image Dimension Calculation:");print("((ord($data[3]) << 8) | ord($data[4]));");}$this->ImageInfo["h"]["Height"] = ((ord($data[3]) << 8) | ord($data[4]));$this->ImageInfo["h"]["Width"] = ((ord($data[5]) << 8) | ord($data[6]));$num_components = ord($data[7]);if ($num_components == 3){$this->ImageInfo["h"]["IsColor"] = 1;}else{$this->ImageInfo["h"]["IsColor"] = 0;}$this->ImageInfo["h"]["Process"] = $marker;$this->debug("JPEG image is ".$this->ImageInfo["h"]["Width"]." * ".$this->ImageInfo["h"]["Height"].", $num_components color components, $data_precision bits per sample\n");}/*** Process Comments* @param array Section data* @param int Length of the section**/function process_COM($data,$length) {if ($length > MAX_COMMENT) $length = MAX_COMMENT;/** Truncate if it won't fit in our structure. */$nch = 0; $Comment = "";for ($a=2;$a<$length;$a++){$ch = $data[$a];if ($ch == '\r' && $data[$a+1] == '\n') continue; // Remove cr followed by lf.$Comment .= $ch;}//$this->ImageInfo[M_COM] = $Comment;$this->ImageInfo["h"]["imageComment"] = $Comment;$this->debug("COM marker comment: $Comment\n");}/*** Process one of the nested EXIF directories.* @param string All directory information* @param string whole Section* @param int Length of exif section**/function ProcessExifDir($DirStart, $OffsetBase, $ExifLength) {$NumDirEntries = 0;$ValuePtr = array();$NumDirEntries = $this->Get16u($DirStart[0],$DirStart[1]);$this->debug("<br>Directory with $NumDirEntries entries\n");for ($de=0;$de<$NumDirEntries;$de++){//$DirEntry = array_slice($DirStart,2+12*$de);$DirEntry = substr($DirStart,2+12*$de);$Tag = $this->Get16u($DirEntry[0],$DirEntry[1]);$Format = $this->Get16u($DirEntry[2],$DirEntry[3]);$Components = $this->Get32u($DirEntry[4],$DirEntry[5],$DirEntry[6],$DirEntry[7]);/**if ((Format-1) >= NUM_FORMATS) {// (-1) catches illegal zero case as unsigned underflows to positive large.ErrNonfatal("Illegal number format %d for tag %04x", Format, Tag);continue;}*/$ByteCount = $Components * $this->BytesPerFormat[$Format];if ($ByteCount > 4){$OffsetVal = $this->Get32u($DirEntry[8],$DirEntry[9],$DirEntry[10],$DirEntry[11]);if ($OffsetVal+$ByteCount > $ExifLength){$this->debug("Illegal value pointer($OffsetVal) for tag $Tag",1);}//$ValuePtr = array_slice($OffsetBase,$OffsetVal);$ValuePtr = substr($OffsetBase,$OffsetVal);} else {//$ValuePtr = array_slice($DirEntry,8);$ValuePtr = substr($DirEntry,8);}switch($Tag){case TAG_MAKE:$this->ImageInfo["h"]["make"] = substr($ValuePtr,0,$ByteCount);break;case TAG_MODEL:$this->ImageInfo["h"]["model"] = substr($ValuePtr,0,$ByteCount);break;case TAG_DATETIME_ORIGINAL:$this->ImageInfo[TAG_DATETIME_ORIGINAL] = substr($ValuePtr,0,$ByteCount);$this->ImageInfo["h"]["DateTime"] = substr($ValuePtr,0,$ByteCount);break;case TAG_USERCOMMENT:// Olympus has this padded with trailing spaces. Remove these first.for ($a=$ByteCount;;){$a--;if ($ValuePtr[$a] == ' '){//$ValuePtr[$a] = '\0';} else {break;}if ($a == 0) break;}// Copy the commentif (($ValuePtr[0].$ValuePtr[1].$ValuePtr[2].$ValuePtr[3].$ValuePtr[4]) == "ASCII"){for ($a=5;$a<10;$a++){$c = $ValuePtr[$a];if ($c != '\0' && $c != ' '){$tmp = substr($ValuePtr,0,$ByteCount);break;}}} else if (($ValuePtr[0].$ValuePtr[1].$ValuePtr[2].$ValuePtr[3].$ValuePtr[4].$ValuePtr[5].$ValuePtr[6]) == "Unicode"){$tmp = substr($ValuePtr,0,$ByteCount);// * Handle Unicode characters here...} else {//$this->ImageInfo[TAG_USERCOMMENT] = implode("",array_slice($ValuePtr,0,$ByteCount));$tmp = substr($ValuePtr,0,$ByteCount);}$this->ImageInfo['h']["exifComment"] = $tmp;break;case TAG_ARTIST:$this->ImageInfo['h']["artist"] = substr($ValuePtr,0,$ByteCount);break;case TAG_COPYRIGHT:$this->ImageInfo['h']["copyright"] = htmlentities(substr($ValuePtr,0,$ByteCount));break;case TAG_FNUMBER:// Simplest way of expressing aperture, so I trust it the most.// (overwrite previously computd value if there is one)$tmp = $this->ConvertAnyFormat(substr($ValuePtr,0), $Format);$this->ImageInfo['h']["fnumber"] = sprintf("f/%3.1f",(double)$tmp[0]);break;case TAG_APERTURE:case TAG_MAXAPERTURE:// More relevant info always comes earlier, so only use this field if we don't// have appropriate aperture information yet.if (!isset($this->ImageInfo['h']["aperture"])){$tmpArr = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["aperture"] = exp($tmpArr[0]*log(2)*0.5);}break;case TAG_FOCALLENGTH:// Nice digital cameras actually save the focal length as a function// of how farthey are zoomed in.$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["focalLength"] = sprintf("%4.2f (%d/%d)",(double)$tmp[0],$tmp[1][0],$tmp[1][1]);if (isset($this->ImageInfo['h']["CCDWidth"])){$this->ImageInfo['h']["focalLength"] .= sprintf("(35mm equivalent: %dmm)",(int)($tmp[0]/$this->ImageInfo['h']["CCDWidth"]*36 + 0.5));}break;case TAG_SUBJECT_DISTANCE:// Inidcates the distacne the autofocus camera is focused to.// Tends to be less accurate as distance increases.//$this->ImageInfo["h"]["Distance"] = $this->ConvertAnyFormat($ValuePtr, $Format);$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["Distance"] = sprintf("%4.2f (%d/%d)",(double)$tmp[0],$tmp[1][0],$tmp[1][1]);if ($this->ImageInfo['h']["Distance"] < 0){$this->ImageInfo['h']["focusDistance"] = "Infinite";} else {$this->ImageInfo['h']["focusDistance"] = sprintf("%4.2fm",(double)$this->ImageInfo['h']["Distance"]);}break;case TAG_EXPOSURETIME:// Simplest way of expressing exposure time, so I trust it most.// (overwrite previously computd value if there is one)$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["exposureTime"] = sprintf("%6.3f s (%d/%d)",(double)$tmp[0],$tmp[1][0],$tmp[1][1]);if ($tmp[0] <= 0.5 && $tmp[1][0] != 1){$this->ImageInfo['h']["exposureTime"] .= sprintf(" (1/%d)",(int)(0.5 + 1/$tmp[0]));}break;case TAG_SHUTTERSPEED:// More complicated way of expressing exposure time, so only use// this value if we don't already have it from somewhere else.if ($this->ImageInfo[TAG_EXPOSURETIME] == 0){$sp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo[TAG_SHUTTERSPEED] = (1/exp($sp[0]*log(2)));}break;case TAG_FLASH:$this->ImageInfo["h"]["flashUsed"] = "No";if ($this->ConvertAnyFormat($ValuePtr, $Format) & 7){$this->ImageInfo["h"]["flashUsed"] = "Yes";}break;case TAG_ORIENTATION:$this->ImageInfo[TAG_ORIENTATION] = $this->ConvertAnyFormat($ValuePtr, $Format);if ($this->ImageInfo[TAG_ORIENTATION] < 1 || $this->ImageInfo[TAG_ORIENTATION] > 8){$this->debug(sprintf("Undefined rotation value %d", $this->ImageInfo[TAG_ORIENTATION], 0),1);$this->ImageInfo[TAG_ORIENTATION] = 0;}break;case TAG_EXIF_IMAGELENGTH:// * Image height$a = (int) $this->ConvertAnyFormat($ValuePtr, $Format);if ($this->ExifImageLength < $a) $this->ExifImageLength = $a;$this->ImageInfo[TAG_EXIF_IMAGELENGTH] = $this->ExifImageLength;$this->ImageInfo["h"]["Height"] = $this->ExifImageLength;break;case TAG_EXIF_IMAGEWIDTH:// Use largest of height and width to deal with images that have been// rotated to portrait format.$a = (int) $this->ConvertAnyFormat($ValuePtr, $Format);if ($this->ExifImageWidth < $a) $this->ExifImageWidth = $a;$this->ImageInfo[TAG_EXIF_IMAGEWIDTH] = $this->ExifImageWidth;$this->ImageInfo["h"]["Width"] = $this->ExifImageWidth;break;case TAG_FOCALPLANEXRES:$this->FocalplaneXRes = $this->ConvertAnyFormat($ValuePtr, $Format);$this->FocalplaneXRes = $this->FocalplaneXRes[0];$this->ImageInfo[TAG_FOCALPLANEXRES] = $this->FocalplaneXRes[0];break;case TAG_FOCALPLANEUNITS:switch($this->ConvertAnyFormat($ValuePtr, $Format)){case 1: $this->FocalplaneUnits = 25.4; break; // inchcase 2:// According to the information I was using, 2 means meters.// But looking at the Cannon powershot's files, inches is the only// sensible value.$this->FocalplaneUnits = 25.4;break;case 3: $this->FocalplaneUnits = 10; break; // centimetercase 4: $this->FocalplaneUnits = 1; break; // milimetercase 5: $this->FocalplaneUnits = .001; break; // micrometer}$this->ImageInfo[TAG_FOCALPLANEUNITS] = $this->FocalplaneUnits;break;// Remaining cases contributed by: Volker C. Schoech (schoech@gmx.de)case TAG_EXPOSURE_BIAS:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["exposureBias"] = sprintf("%4.2f (%d/%d)",(double)$tmp[0],$tmp[1][0],$tmp[1][1]);break;case TAG_WHITEBALANCE:$tmp = (int) $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("1"=>"Sunny","2"=>"fluorescent","3"=>"incandescent");$this->ImageInfo['h']["whiteBalance"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Cloudy");break;case TAG_METERING_MODE:$tmp = (int) $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("2"=>"center weight","3"=>"spot","5"=>"matrix");$this->ImageInfo['h']["meteringMode"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_EXPOSURE_PROGRAM:$tmp = (int) $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("2"=>"program (auto)","3"=>"aperture priority (semi-auto)","4"=>"shutter priority (semi-auto)");$this->ImageInfo['h']["exposure"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_ISO_EQUIVALENT:$tmp = (int) $this->ConvertAnyFormat($ValuePtr, $Format);if ( $tmp < 50 ) $tmp *= 200;$this->ImageInfo['h']["isoEquiv"] = sprintf("%2d",(int)$tmp);break;case TAG_COMPRESSION_LEVEL:$tmp = (int) $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("1"=>"Basic","2"=>"Normal","4"=>"Fine");$this->ImageInfo['h']["jpegQuality"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_THUMBNAIL_OFFSET:$this->ThumbnailOffset = $this->ConvertAnyFormat($ValuePtr, $Format);$this->DirWithThumbnailPtrs = $DirStart;break;case TAG_THUMBNAIL_LENGTH:$this->ThumbnailSize = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo[TAG_THUMBNAIL_LENGTH] = $this->ThumbnailSize;break;//----------------------------------------------case TAG_IMAGE_DESC:$this->ImageInfo['h']["imageDesc"] = substr($ValuePtr,0,$ByteCount);break;case TAG_X_RESOLUTION:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["xResolution"] = sprintf("%4.2f (%d/%d) %s",(double)$tmp[0],$tmp[1][0],$tmp[1][1],$this->ImageInfo['h']["resolutionUnit"]);break;case TAG_Y_RESOLUTION:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["yResolution"] = sprintf("%4.2f (%d/%d) %s",(double)$tmp[0],$tmp[1][0],$tmp[1][1],$this->ImageInfo['h']["resolutionUnit"]);break;case TAG_RESOLUTION_UNIT:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("2"=>"Inches","3"=>"Centimeters");$this->ImageInfo['h']["resolutionUnit"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_SOFTWARE:$this->ImageInfo['h']["software"] = substr($ValuePtr,0,$ByteCount);break;case TAG_FILE_MODDATE;$this->ImageInfo['h']["fileModifiedDate"] = substr($ValuePtr,0,$ByteCount);break;case TAG_YCBCR_POSITIONING:$this->ImageInfo['h']["YCbCrPositioning"] = $this->ConvertAnyFormat($ValuePtr, $Format);break;case TAG_EXIF_VERSION:$this->ImageInfo['h']["exifVersion"] = substr($ValuePtr,0,$ByteCount);break;case TAG_DATE_TIME_DIGITIZED:$this->ImageInfo['h']["dateTimeDigitized"] = substr($ValuePtr,0,$ByteCount);break;case TAG_COMPONENT_CONFIG: // need more tests for this$tmp = (int)$this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("0"=>"Does Not Exists","1"=>"Y","2"=>"Cb","3"=>"Cr","4"=>"R","5"=>"G","6"=>"B");if(strlen($tmp) < 4 ) {$this->ImageInfo['h']["componentConfig"] = $tmpArr["0"];} else {for($i=0;$i<strlen($tmp);$i++) {if($tmp["$i"] != 0) {$this->ImageInfo['h']["componentConfig"] .= $tmpArr[$tmp["$i"]];}}}break;case TAG_MAKER_NOTE://$this->ImageInfo['h']["makerNote"] = substr($ValuePtr,0,$ByteCount);$this->ImageInfo['h']["makerNote"] = "NOT IMPLEMENTED";break;case TAG_SUB_SEC_TIME:$this->ImageInfo['h']["subSectionTime"] = substr($ValuePtr,0,$ByteCount);break;case TAG_SUB_SEC_TIME_ORIG:$this->ImageInfo['h']["subSectionTimeOriginal"] = substr($ValuePtr,0,$ByteCount);break;case TAG_SUB_SEC_TIME_DIGITIZED:$this->ImageInfo['h']["subSectionTimeDigtized"] = substr($ValuePtr,0,$ByteCount);break;case TAG_FLASHPIX_VER:$this->ImageInfo['h']["flashpixVersion"] = substr($ValuePtr,0,$ByteCount);break;case TAG_COLOR_SPACE:$this->ImageInfo['h']["colorSpace"] = substr($ValuePtr,0,$ByteCount);break;case TAG_RELATED_SOUND_FILE:$this->ImageInfo['h']["relatedSoundFile"] = substr($ValuePtr,0,$ByteCount);break;case TAG_GPS_LATITUDE_REF:$this->ImageInfo['h']["GPSLatitudeRef"] = substr($ValuePtr,0,$ByteCount);break;case TAG_GPS_LATITUDE:$this->ImageInfo['h']["GPSLatitude"] = substr($ValuePtr,0,$ByteCount);break;case TAG_SENSING_METHOD:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("1"=>"Not Defined","2"=>"One-chip color area sensor","3"=>"Two-chip color area sensor","4"=>"Three -chip color area sensor","5"=>"Color sequential area sensor","6"=>"Trilinear sensor", "7"=>"Color sequential linear sensor");$this->ImageInfo['h']["sensing"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_SOUCE_TYPE:$this->ImageInfo['h']["sourceType"] = substr($ValuePtr,0,$ByteCount);break;case TAG_SCENE_TYPE:$this->ImageInfo['h']["sceneType"] = substr($ValuePtr,0,$ByteCount);break;case TAG_CFA_PATTERN:$this->ImageInfo['h']["CFAPattern"] = substr($ValuePtr,0,$ByteCount);break;case TAG_CUSTOM_RENDERED:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["customRendered"] = ($mp == 0) ? 'Normal Process' : ($mp == 1 ? 'Custom Process' : 'Reserved');break;case TAG_EXPOSURE_MODE:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array('Auto Exposure','Manual Exposure','Auto Bracket');$this->ImageInfo['h']["exposureMode"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_WHITE_BALANCE:$this->ImageInfo['h']["whiteBalance"] = $this->ConvertAnyFormat($ValuePtr, $Format);break;case TAG_DIGITAL_ZOOM_RATIO:$tmp = $this->ImageInfo['h']["zoomRatio"] = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["zoomRatio"] = sprintf("%4.2f (%d/%d)",(double)$tmp[0],$tmp[1][0],$tmp[1][1]);break;case TAG_FLENGTH_IN35MM:$this->ImageInfo['h']["flength35mm"] = $this->ConvertAnyFormat($ValuePtr, $Format);break;case TAG_SCREEN_CAP_TYPE:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("Standard","Landscape","Portrait","Night Scene");$this->ImageInfo['h']["screenCaptureType"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_GAIN_CONTROL:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("None","Low Gain Up","High Gain Up","Low Gain Down","High Gain Down");$this->ImageInfo['h']["gainControl"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_CONTRAST:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("Normal","Soft","Hard");$this->ImageInfo['h']["contrast"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_SATURATION:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("Normal","Low Saturation","High Saturation");$this->ImageInfo['h']["saturation"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_SHARPNESS:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("Normal","Soft","Hard");$this->ImageInfo['h']["sharpness"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_DIST_RANGE:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("Unknown","Macro","Close View","Distant View");$this->ImageInfo['h']["distanceRange"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_DEVICE_SETTING_DESC:/*$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("Unknown","Macro","Close View","Distant View");$this->ImageInfo['h']["distanceRange"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");*/$this->ImageInfo['h']["deviceSettingDesc"] = "NOT IMPLEMENTED";break;case TAG_COMPRESS_SCHEME:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("1"=>"Uncompressed","6"=>"JPEG compression (thumbnails only)");$this->ImageInfo['h']["compressScheme"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_IMAGE_WD:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["jpegImageWidth"] = $tmp;break;case TAG_IMAGE_HT:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["jpegImageHeight"] = $tmp;break;case TAG_IMAGE_BPS:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["jpegBitsPerSample"] = $tmp;break;case TAG_IMAGE_PHOTO_INT:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["jpegPhotometricInt"] = $tmp;$tmpArr = array("2"=>"RGB","6"=>"YCbCr");$this->ImageInfo['h']["jpegPhotometricInt"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_IMAGE_SOFFSET:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["jpegStripOffsets"] = $tmp;break;case TAG_IMAGE_SPP:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["jpegSamplesPerPixel"] = $tmp;break;case TAG_IMAGE_RPS:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["jpegRowsPerStrip"] = $tmp;break;case TAG_IMAGE_SBC:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["jpegStripByteCounts"] = $tmp;break;case TAG_IMAGE_P_CONFIG:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$tmpArr = array("1"=>"Chunky Format","2"=>"Planar Format");$this->ImageInfo['h']["jpegPlanarConfig"] =(isset($tmpArr["$tmp"]) ? $tmpArr["$tmp"] : "Reserved");break;case TAG_FOCALPLANE_YRESOL:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["focalPlaneYResolution"] = sprintf("%4.2f (%d/%d)",(double)$tmp[0],$tmp[1][0],$tmp[1][1]);break;case TAG_BRIGHTNESS:$tmp = $this->ConvertAnyFormat($ValuePtr, $Format);$this->ImageInfo['h']["brightness"] = sprintf("%4.2f (%d/%d)",(double)$tmp[0],$tmp[1][0],$tmp[1][1]);break;//---------------------------------------------case TAG_EXIF_OFFSET:case TAG_INTEROP_OFFSET:{$SubdirStart = substr($OffsetBase,$this->Get32u($ValuePtr[0],$ValuePtr[1],$ValuePtr[2],$ValuePtr[3]));//if ($SubdirStart < $OffsetBase || $SubdirStart > $OffsetBase+$ExifLength){// debug("Illegal exif or interop ofset directory link",1);//}else{//echo "<h1>Calling sub-exif dir</h1>";$this->ProcessExifDir($SubdirStart, $OffsetBase, $ExifLength);//}continue;}default: {$this->debug("UNKNOWN TAG: $Tag");}}}{// In addition to linking to subdirectories via exif tags,// there's also a potential link to another directory at the end of each// directory. this has got to be the result of a comitee!$tmpDirStart = substr($DirStart,2+12*$NumDirEntries);if (strlen($tmpDirStart) + 4 <= strlen($OffsetBase)+$ExifLength){$Offset = $this->Get32u($tmpDirStart[0],$tmpDirStart[1],$tmpDirStart[2],$tmpDirStart[3]);if ($Offset){$SubdirStart = substr($OffsetBase,$Offset);if (strlen($SubdirStart) > strlen($OffsetBase)+$ExifLength){if (strlen($SubdirStart) < strlen($OffsetBase)+$ExifLength+20){// Jhead 1.3 or earlier would crop the whole directory!// As Jhead produces this form of format incorrectness,// I'll just let it pass silently} else {$this->errno = 51;$this->errstr = "Illegal subdirectory link";$this->debug($this->errstr,1);}}else{if (strlen($SubdirStart) <= strlen($OffsetBase)+$ExifLength){$this->ProcessExifDir($SubdirStart, $OffsetBase, $ExifLength);}}}} else {// The exif header ends before the last next directory pointer.}}/*** Check if thumbnail has been cached or not.* If yes! then read the file.*/if(file_exists($this->thumbnail) && $this->caching && (filemtime($this->thumbnail) == filemtime($this->file) )) {$this->ImageInfo["h"]["Thumbnail"] = $this->thumbnail;$this->ImageInfo["h"]["ThumbnailSize"] = sprintf("%d bytes",filesize($this->thumbnail));} else{if ($this->ThumbnailSize && $this->ThumbnailOffset){if ($this->ThumbnailSize + $this->ThumbnailOffset <= $ExifLength){// The thumbnail pointer appears to be valid. Store it.$this->ImageInfo["h"]["Thumbnail"] = substr($OffsetBase,$this->ThumbnailOffset);// Save the thumbnail /if($this->caching && is_dir($this->cacheDir)) {$this->saveThumbnail($this->thumbnail);$this->ImageInfo["h"]["Thumbnail"] = $this->thumbnail;}$this->ImageInfo["h"]["ThumbnailSize"] = sprintf("%d bytes",strlen($this->ImageInfo["h"]["Thumbnail"]));}}}}/*** Process Exif data* @param array Section data as an array* @param int Length of the section (length of data array)**/function process_EXIF($data,$length) {$this->debug("Exif header $length bytes long\n");if(($data[2].$data[3].$data[4].$data[5]) != "Exif") {$this->errno = 52;$this->errstr = "NOT EXIF FORMAT";$this->debug($this->errstr,1);}$this->ImageInfo["h"]["FlashUsed"] = 0;/** If it s from a digicam, and it used flash, it says so. */$this->FocalplaneXRes = 0;$this->FocalplaneUnits = 0;$this->ExifImageWidth = 0;if(($data[8].$data[9]) == "II") {$this->debug("Exif section in Intel order\n");$this->MotorolaOrder = 0;} else if(($data[8].$data[9]) == "MM") {$this->debug("Exif section in Motorola order\n");$this->MotorolaOrder = 1;} else {$this->errno = 53;$this->errstr = "Invalid Exif alignment marker.\n";$this->debug($this->errstr,1);return;}if($this->Get16u($data[10],$data[11]) != 0x2A || $this->Get32s($data[12],$data[13],$data[14],$data[15]) != 0x08) {$this->errno = 54;$this->errstr = "Invalid Exif start (1)";$this->debug($this->errstr,1);}$DirWithThumbnailPtrs = NULL;//$this->ProcessExifDir(array_slice($data,16),array_slice($data,8),$length);$this->ProcessExifDir(substr($data,16),substr($data,8),$length);// Compute the CCD width, in milimeters. 2if ($this->FocalplaneXRes != 0){$this->ImageInfo["h"]["CCDWidth"] = sprintf("%4.2fmm",(float)($this->ExifImageWidth * $this->FocalplaneUnits / $this->FocalplaneXRes));}$this->debug("Non settings part of Exif header: ".$length." bytes\n");} // end of function process_EXIF/*** Converts two byte number into its equivalent int integer* @param int* @param int**/function Get16u($val,$by) {if($this->MotorolaOrder){return ((ord($val) << 8) | ord($by));} else {return ((ord($by) << 8) | ord($val));}}/*** Converts 4-byte number into its equivalent integer** @param int* @param int* @param int* @param int** @return int*/function Get32s($val1,$val2,$val3,$val4){$val1 = ord($val1);$val2 = ord($val2);$val3 = ord($val3);$val4 = ord($val4);if ($this->MotorolaOrder){return (($val1 << 24) | ($val2 << 16) | ($val3 << 8 ) | ($val4 << 0 ));}else{return (($val4 << 24) | ($val3 << 16) | ($val2 << 8 ) | ($val1 << 0 ));}}/*** Converts 4-byte number into its equivalent integer with the help of Get32s** @param int* @param int* @param int* @param int** @return int**/function get32u($val1,$val2,$val3,$val4) {return ($this->Get32s($val1,$val2,$val3,$val4) & 0xffffffff);}//--------------------------------------------------------------------------// Evaluate number, be it int, rational, or float from directory.//--------------------------------------------------------------------------function ConvertAnyFormat($ValuePtr, $Format){$Value = 0;switch($Format){case FMT_SBYTE: $Value = $ValuePtr[0]; break;case FMT_BYTE: $Value = $ValuePtr[0]; break;case FMT_USHORT: $Value = $this->Get16u($ValuePtr[0],$ValuePtr[1]); break;case FMT_ULONG: $Value = $this->Get32u($ValuePtr[0],$ValuePtr[1],$ValuePtr[2],$ValuePtr[3]); break;case FMT_URATIONAL:case FMT_SRATIONAL:{$Num = $this->Get32s($ValuePtr[0],$ValuePtr[1],$ValuePtr[2],$ValuePtr[3]);$Den = $this->Get32s($ValuePtr[4],$ValuePtr[5],$ValuePtr[6],$ValuePtr[7]);if ($Den == 0){$Value = 0;}else{$Value = (double) ($Num/$Den);}return array($Value,array($Num,$Den));break;}case FMT_SSHORT: $Value = $this->Get16u($ValuePtr[0],$ValuePtr[1]); break;case FMT_SLONG: $Value = $this->Get32s($ValuePtr[0],$ValuePtr[1],$ValuePtr[2],$ValuePtr[3]); break;// Not sure if this is correct (never seen float used in Exif format)case FMT_SINGLE: $Value = $ValuePtr[0]; break;case FMT_DOUBLE: $Value = $ValuePtr[0]; break;}return $Value;}/*** Function to extract thumbnail from Exif data of the image.* and store it in a filename given by $ThumbFile** @param String Files name to store the thumbnail**/function saveThumbnail($ThumbFile) {$ThumbFile = trim($ThumbFile);$file = basename($this->file);if(empty($ThumbFile)) $ThumbFile = "th_$file";if (!empty($this->ImageInfo["h"]["Thumbnail"])){$tp = fopen($ThumbFile,"wb");if(!$tp) {$this->errno = 2;$this->errstr = "Cannot Open file '$ThumbFile'";}fwrite($tp,$this->ImageInfo["h"]["Thumbnail"]);fclose($tp);touch($ThumbFile,filemtime($this->file));}//$this->thumbnailURL = $ThumbFile;$this->ImageInfo["h"]["Thumbnail"] = $ThumbFile;}/*** Returns thumbnail url along with parameter supplied.* Should be called in src attribute of image** @return string File URL**/function showThumbnail() {return "showThumbnail.php?file=".$this->file;//$this->ImageInfo["h"]["Thumbnail"]}/*** Function to give back thumbail image* @return string full image**/function getThumbnail() {return $this->ImageInfo["h"]["Thumbnail"];}/****/function getImageInfo() {$imgInfo = $this->ImageInfo["h"];$retArr = $imgInfo;$retArr["FileName"] = $imgInfo["FileName"];$retArr["FileSize"] = $imgInfo["FileSize"]." bytes";$retArr["FileDateTime"] = date("d-M-Y H:i:s",$imgInfo["FileDateTime"]);$retArr["resolution"] = $imgInfo["Width"]."x".$imgInfo["Height"];if ($this->ImageInfo[TAG_ORIENTATION] > 1){// Only print orientation if one was supplied, and if its not 1 (normal orientation)// 1 - "The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side."// 2 - "The 0th row is at the visual top of the image, and the 0th column is the visual right-hand side."// 3 - "The 0th row is at the visual bottom of the image, and the 0th column is the visual right-hand side."// 4 - "The 0th row is at the visual bottom of the image, and the 0th column is the visual left-hand side."// 5 - "The 0th row is the visual left-hand side of of the image, and the 0th column is the visual top."// 6 - "The 0th row is the visual right-hand side of of the image, and the 0th column is the visual top."// 7 - "The 0th row is the visual right-hand side of of the image, and the 0th column is the visual bottom."// 8 - "The 0th row is the visual left-hand side of of the image, and the 0th column is the visual bottom."// Note: The descriptions here are the same as the name of the command line// ption to pass to jpegtran to right the image$OrientTab = array("Undefined","Normal", // 1"flip horizontal", // left right reversed mirror"rotate 180", // 3"flip vertical", // upside down mirror"transpose", // Flipped about top-left <--> bottom-right axis."rotate 90", // rotate 90 cw to right it."transverse", // flipped about top-right <--> bottom-left axis"rotate 270", // rotate 270 to right it.);$retArr["orientation"] = $OrientTab[$this->ImageInfo[TAG_ORIENTATION]];}$retArr["color"] = ($imgInfo["IsColor"] == 0) ? "Black and white" : "Color";if(isset($imgInfo["Process"])) {switch($imgInfo["Process"]) {case M_SOF0: $process = "Baseline";break;case M_SOF1: $process = "Extended sequential";break;case M_SOF2: $process = "Progressive";break;case M_SOF3: $process = "Lossless";break;case M_SOF5: $process = "Differential sequential";break;case M_SOF6: $process = "Differential progressive";break;case M_SOF7: $process = "Differential lossless";break;case M_SOF9: $process = "Extended sequential, arithmetic coding";break;case M_SOF10: $process = "Progressive, arithmetic coding";break;case M_SOF11: $process = "Lossless, arithmetic coding";break;case M_SOF13: $process = "Differential sequential, arithmetic coding";break;case M_SOF14: $process = "Differential progressive, arithmetic coding";break;case M_SOF15: $process = "Differential lossless, arithmetic coding";break;default: $process = "Unknown";}$retArr["jpegProcess"] = $process;}if(file_exists($this->thumbnailURL)) {$retArr["Thumbnail"] = "<a href='$this->thumbnailURL'>$this->thumbnailURL</a>";}return $retArr;}/*** Returns time in microseconds*/function cpgGetMicroTime(){list($usec, $sec) = explode(" ",microtime());return ((float)$usec + (float)$sec);}/*** Get the time difference*/function getDiffTime() {return ($this->cpgGetMicroTime() - $this->timeStart);}} // end of class?>