+++ /dev/null
-<?php
-/**
- * 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 < vinay@vinayras.com >
- Concept by Tarique Sani < tarique@sanisoft.com >
-
- * http://www.vinayras.com/project/phpexifrw.php
- * 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
- - Canon
- PowerShot 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
- - FujiFilm
- DX10
- FinePix40i
- MX-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 width
-define("TAG_IMAGE_HT","0x0101"); // image height
-define("TAG_IMAGE_BPS","0x0102"); // Bits Per sample
-
-define("TAG_IMAGE_PHOTO_INT","0x0106"); // photometricinterpretation
-define("TAG_IMAGE_SOFFSET","0x0111"); // stripoffsets
-
-define("TAG_IMAGE_SPP","0x0115"); // Samples per pixel - 277
-define("TAG_IMAGE_RPS","0x0116"); // RowsPerStrip - 278
-define("TAG_IMAGE_SBC","0x0117"); // StripByteCounts - 279
-
-define("TAG_IMAGE_P_CONFIG","0x011C"); // Planar Configuration - 284
-
-define("TAG_IMAGE_DESC","0x010E"); // image title
-define("TAG_X_RESOLUTION","0x011A"); // Image resolution in width direction
-define("TAG_Y_RESOLUTION","0x011B"); // Image resolution in height direction
-define("TAG_RESOLUTION_UNIT","0x0128"); // Unit of X and Y resolution
-define("TAG_SOFTWARE","0x0131"); // Software used
-define("TAG_FILE_MODDATE","0x0132"); // DateTime File change date and time
-define("TAG_YCBCR_POSITIONING","0x0213"); // Y and C positioning
-define("TAG_EXIF_VERSION","0x9000"); // Exif version
-define("TAG_DATE_TIME_DIGITIZED","0x9004"); // Date and time of digital data
-define("TAG_COMPONENT_CONFIG","0x9101"); // Component configuration
-define("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"); //FlashPixVersion
-define("TAG_COLOR_SPACE","0xA001"); //ColorSpace
-define("TAG_RELATED_SOUND_FILE","0xA004"); //Related audio file
-
-define("TAG_GPS_LATITUDE_REF","0x0001"); //
-define("TAG_GPS_LATITUDE","0x0002"); //
-
-define("TAG_SENSING_METHOD","0xA217"); // SensingMethod
-
-define("TAG_SOUCE_TYPE","0xA300"); // FileSource
-define("TAG_SCENE_TYPE","0xA301"); // SceneType
-
-define("TAG_CFA_PATTERN","0xA302"); // CFA Pattern
-
-/** Tags in EXIF 2.2 Only */
-define("TAG_COMPRESS_SCHEME","0x0103"); //
-define("TAG_CUSTOM_RENDERED","0xA401"); // CustomRendered
-define("TAG_EXPOSURE_MODE","0xA402"); // Exposure mode ExposureMode
-define("TAG_WHITE_BALANCE","0xA403"); // White balance WhiteBalance
-define("TAG_DIGITAL_ZOOM_RATIO","0xA404"); // Digital zoom ratio DigitalZoomRatio
-define("TAG_FLENGTH_IN35MM","0xA405"); // Focal length in 35 mm film FocalLengthIn35mmFilm
-define("TAG_SCREEN_CAP_TYPE","0xA406"); // Scene capture type SceneCaptureType
-define("TAG_GAIN_CONTROL","0xA407"); //Gain control
-define("TAG_CONTRAST","0xA408"); // Contrast
-define("TAG_SATURATION","0xA409"); // Saturation
-define("TAG_SHARPNESS","0xA40A"); // Sharpness
-define("TAG_DEVICE_SETTING_DESC","0xA40B"); // SDevice settings description DeviceSettingDescription
-define("TAG_DIST_RANGE","0xA40C"); //Subject distance range SubjectDistanceRange
-
-define("TAG_FOCALPLANE_YRESOL","0xA20F");; //FocalPlaneYResolution
-define("TAG_BRIGHTNESS","0x9203");; //Brightness
-//--------------------------------
-/** error Description */
-/**
- 1 - File does not exists!
- 2 -
- 3 - Filename not provided
-
- 10 - too many padding bytes
- 11 - "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; // market the exif section index oout of all sections
-
- var $errno = 0;
- var $errstr = "";
-
- var $debug = false;
-
- // Caching ralated variables
- var $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 = $this->getmicrotime();
- if(!empty($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($this->cacheDir);
- }
-
- // Prepare the ame of thumbnail
- if(is_dir($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 comment
- if (($ValuePtr[0].$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){
- $this->ImageInfo['h']["exposureTime"] .= sprintf(" (1/%d)",(int)(0.5 + 1/$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 (isset($this->ImageInfo[TAG_EXPOSURETIME]) && $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; // inch
- case 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; // centimeter
- case 4: $this->FocalplaneUnits = 1; break; // milimeter
- case 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);
- $this->ImageInfo['h']["customRendered"] = ($tmp == 0) ? 'Normal Process' : ($tmp == 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. 2
- if ($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"];
-
- if ( !isset ( $imgInfo["Width"] ) ) return array ( "EXIF" => "NO" ) ; # Dummy entry to distinguish von empty (=never generated) one
-
- $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 $retArr;
- }
-
- /**
- * Returns time in microseconds
- */
- function getmicrotime(){
- list($usec, $sec) = explode(" ",microtime());
- return ((float)$usec + (float)$sec);
- }
-
- /**
- * Get the time difference
- */
- function getDiffTime() {
- return ($this->getmicrotime() - $this->timeStart);
- }
-} // end of class
-?>
dépôts / lhc / web / wiklou.git / commitdiff