/classes-old/tmp/exifer-tmp/exif.php
PHP | 1134 lines | 779 code | 88 blank | 267 comment | 229 complexity | 36df5b6d14ef6b3ea52a1667469337a1 MD5 | raw file
Possible License(s): AGPL-1.0
- <?php
- /*
- Exifer 1.6
- Extracts EXIF information from digital photos.
-
- Originally created by:
- Copyright Š 2005 Jake Olefsky
- http:// www.offsky.com/software/exif/index.php
- jake@olefsky.com
-
- This program is free software; you can redistribute it and/or modify it under the terms of
- the GNU General Public License as published by the Free Software Foundation; either version 2
- of the License, or (at your option) any later version.
- This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
- without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- See the GNU General Public License for more details. http:// www.gnu.org/copyleft/gpl.html
-
- SUMMARY:
- This script will correctly parse all of the EXIF data included in images taken
- with digital cameras. It will read the IDF0, IDF1, SubIDF and InteroperabilityIFD
- fields as well as parsing some of the MakerNote fields that vary depending on
- camera make and model. This script parses more tags than the internal PHP exif
- implementation and it will correctly identify and decode what all the values mean.
-
- This version will correctly parse the MakerNote field for Nikon, Olympus, and Canon
- digital cameras. Others will follow.
-
- TESTED WITH:
- Nikon CoolPix 700
- Nikon CoolPix E3200
- Nikon CoolPix 4500
- Nikon CoolPix 950
- Nikon Coolpix 5700
- Canon PowerShot S200
- Canon PowerShot S110
- Olympus C2040Z
- Olympus C960
- Olumpus E-300
- Olympus E-410
- Olympus E-500
- Olympus E-510
- Olympus E-3
- Canon Ixus
- Canon EOS 300D
- Canon Digital Rebel
- Canon EOS 10D
- Canon PowerShot G2
- FujiFilm DX 10
- FujiFilm MX-1200
- FujiFilm FinePix2400
- FujiFilm FinePix2600
- FujiFilm FinePix S602
- FujiFilm FinePix40i
- Sony D700
- Sony Cybershot
- Kodak DC210
- Kodak DC240
- Kodak DC4800
- Kodak DX3215
- Ricoh RDC-5300
- Sanyo VPC-G250
- Sanyo VPC-SX550
- Epson 3100z
-
- VERSION HISTORY:
-
- 1.0 September 23, 2002
-
- + First Public Release
-
- 1.1 January 25, 2003
-
- + Gracefully handled the error case where you pass an empty string to this library
- + Fixed an inconsistency in the Olympus Camera parsing module
- + Added support for parsing the MakerNote of Canon images.
- + Modified how the imagefile is opened so it works for windows machines.
- + Correctly parses the FocalPlaneResolutionUnit and PhotometricInterpretation fields
- + Negative rational numbers are properly displayed
- + Strange old cameras that use Motorola endineness are now properly supported
- + Tested with several more cameras
-
- Potential Problem: Negative Shorts and Negative Longs may not be correctly displayed, but I
- have not yet found an example of negative shorts or longs being used.
-
- 1.2 March 30, 2003
-
- + Fixed an error that was displayed if you edited your image with WinXP's image viewer
- + Fixed a bug that caused some images saved from 3rd party software to not parse correctly
- + Changed the ExposureTime tag to display in fractional seconds rather than decimal
- + Updated the ShutterSpeedValue tag to have the units of 'sec'
- + Added support for parsing the MakeNote of FujiFilm images
- + Added support for parsing the MakeNote of Sanyo images
- + Fixed a bug with parsing some Olympus MakerNote tags
- + Tested with several more cameras
-
- 1.3 June 15, 2003
-
- + Fixed Canon MakerNote support for some models
- (Canon has very difficult and inconsistent MakerNote syntax)
- + Negative signed shorts and negative signed longs are properly displayed
- + Several more tags are defined
- + More information in my comments about what each tag is
- + Parses and Displays GPS information if available
- + Tested with several more cameras
-
- 1.4 September 14, 2003
-
- + This software is now licensed under the GNU General Public License
- + Exposure time is now correctly displayed when the numerator is 10
- + Fixed the calculation and display of ShutterSpeedValue, ApertureValue and MaxApertureValue
- + Fixed a bug with the GPS code
- + Tested with several more cameras
-
- 1.5 February 18, 2005
-
- + It now gracefully deals with a passed in file that cannot be found.
- + Fixed a GPS bug for the parsing of Altitude and other signed rational numbers
- + Defined more values for Canon cameras.
- + Added 'bulb' detection for ShutterSpeed
- + Made script loading a little faster and less memory intensive.
- + Bug fixes
- + Better error reporting
- + Graceful failure for files with corrupt exif info.
- + QuickTime (including iPhoto) messes up the Makernote tag for certain photos (no workaround yet)
- + Now reads exif information when the jpeg markers are out of order
- + Gives raw data output for IPTC, COM and APP2 fields which are sometimes set by other applications
- + Improvements to Nikon Makernote parsing
-
- 1.6 March 25th, 2007 [Zenphoto]
-
- + Adopted into the Zenphoto gallery project, at http://www.zenphoto.org
- + Fixed a bug where strings had trailing null bytes.
- + Formatted selected strings better.
- + Added calculation of 35mm-equivalent focal length when possible.
- + Cleaned up code for readability and efficiency.
-
- 1.7 April 11th, 2008 [Zenphoto]
-
- + Fixed bug with newer Olympus cameras where number of fields was miscalculated leading to bad performance.
- + More logical fraction calculation for shutter speed.
- 2009: For all further changes, see the Zenphoto change logs.
-
- */
-
- //================================================================================================
- // Converts from Intel to Motorola endien. Just reverses the bytes (assumes hex is passed in)
- //================================================================================================
- function intel2Moto($intel) {
- static $cache = array();
- if (isset($cache[$intel])) {
- return $cache[$intel];
- }
- $cache[$intel] = '';
- $len = strlen($intel);
- if ($len > 1000) { // an unreasonable length, override it.
- $len = 1000;
- }
- for($i = 0; $i <= $len; $i += 2) {
- $cache[$intel] .= substr($intel, $len-$i, 2);
- }
- return $cache[$intel];
- }
- //================================================================================================
- // Looks up the name of the tag
- //================================================================================================
- function lookup_tag($tag) {
- switch($tag) {
- // used by IFD0 'Camera Tags'
- case '000b': $tag = 'ACDComment'; break; // text string up to 999 bytes long
- case '00fe': $tag = 'ImageType'; break; // integer -2147483648 to 2147483647
- case '0106': $tag = 'PhotometricInterpret'; break; // ?? Please send sample image with this tag
- case '010e': $tag = 'ImageDescription'; break; // text string up to 999 bytes long
- case '010f': $tag = 'Make'; break; // text string up to 999 bytes long
- case '0110': $tag = 'Model'; break; // text string up to 999 bytes long
- case '0112': $tag = 'Orientation'; break; // integer values 1-9
- case '0115': $tag = 'SamplePerPixel'; break; // integer 0-65535
- case '011a': $tag = 'xResolution'; break; // positive rational number
- case '011b': $tag = 'yResolution'; break; // positive rational number
- case '011c': $tag = 'PlanarConfig'; break; // integer values 1-2
- case '0128': $tag = 'ResolutionUnit'; break; // integer values 1-3
- case '0131': $tag = 'Software'; break; // text string up to 999 bytes long
- case '0132': $tag = 'DateTime'; break; // YYYY:MM:DD HH:MM:SS
- case '013b': $tag = 'Artist'; break; // text string up to 999 bytes long
- case '013c': $tag = 'HostComputer'; break; // text string
- case '013e': $tag = 'WhitePoint'; break; // two positive rational numbers
- case '013f': $tag = 'PrimaryChromaticities'; break; // six positive rational numbers
- case '0211': $tag = 'YCbCrCoefficients'; break; // three positive rational numbers
- case '0213': $tag = 'YCbCrPositioning'; break; // integer values 1-2
- case '0214': $tag = 'ReferenceBlackWhite'; break; // six positive rational numbers
- case '8298': $tag = 'Copyright'; break; // text string up to 999 bytes long
- case '8649': $tag = 'PhotoshopSettings'; break; // ??
- case '8769': $tag = 'ExifOffset'; break; // positive integer
- case '8825': $tag = 'GPSInfoOffset'; break;
- case '9286': $tag = 'UserCommentOld'; break; // ??
- // used by Exif SubIFD 'Image Tags'
- case '829a': $tag = 'ExposureTime'; break; // seconds or fraction of seconds 1/x
- case '829d': $tag = 'FNumber'; break; // positive rational number
- case '8822': $tag = 'ExposureProgram'; break; // integer value 1-9
- case '8824': $tag = 'SpectralSensitivity'; break; // ??
- case '8827': $tag = 'ISOSpeedRatings'; break; // integer 0-65535
- case '9000': $tag = 'ExifVersion'; break; // ??
- case '9003': $tag = 'DateTimeOriginal'; break; // YYYY:MM:DD HH:MM:SS
- case '9004': $tag = 'DateTimeDigitized'; break; // YYYY:MM:DD HH:MM:SS
- case '9101': $tag = 'ComponentsConfiguration'; break; // ??
- case '9102': $tag = 'CompressedBitsPerPixel'; break; // positive rational number
- case '9201': $tag = 'ShutterSpeedValue'; break; // seconds or fraction of seconds 1/x
- case '9202': $tag = 'ApertureValue'; break; // positive rational number
- case '9203': $tag = 'BrightnessValue'; break; // positive rational number
- case '9204': $tag = 'ExposureBiasValue'; break; // positive rational number (EV)
- case '9205': $tag = 'MaxApertureValue'; break; // positive rational number
- case '9206': $tag = 'SubjectDistance'; break; // positive rational number (meters)
- case '9207': $tag = 'MeteringMode'; break; // integer 1-6 and 255
- case '9208': $tag = 'LightSource'; break; // integer 1-255
- case '9209': $tag = 'Flash'; break; // integer 1-255
- case '920a': $tag = 'FocalLength'; break; // positive rational number (mm)
- case '9213': $tag = 'ImageHistory'; break; // text string up to 999 bytes long
- case '927c': $tag = 'MakerNote'; break; // a bunch of data
- case '9286': $tag = 'UserComment'; break; // text string
- case '9290': $tag = 'SubsecTime'; break; // text string up to 999 bytes long
- case '9291': $tag = 'SubsecTimeOriginal'; break; // text string up to 999 bytes long
- case '9292': $tag = 'SubsecTimeDigitized'; break; // text string up to 999 bytes long
- case 'a000': $tag = 'FlashPixVersion'; break; // ??
- case 'a001': $tag = 'ColorSpace'; break; // values 1 or 65535
- case 'a002': $tag = 'ExifImageWidth'; break; // ingeter 1-65535
- case 'a003': $tag = 'ExifImageHeight'; break; // ingeter 1-65535
- case 'a004': $tag = 'RelatedSoundFile'; break; // text string 12 bytes long
- case 'a005': $tag = 'ExifInteroperabilityOffset'; break; // positive integer
- case 'a20c': $tag = 'SpacialFreqResponse'; break; // ??
- case 'a20b': $tag = 'FlashEnergy'; break; // positive rational number
- case 'a20e': $tag = 'FocalPlaneXResolution'; break; // positive rational number
- case 'a20f': $tag = 'FocalPlaneYResolution'; break; // positive rational number
- case 'a210': $tag = 'FocalPlaneResolutionUnit'; break; // values 1-3
- case 'a214': $tag = 'SubjectLocation'; break; // two integers 0-65535
- case 'a215': $tag = 'ExposureIndex'; break; // positive rational number
- case 'a217': $tag = 'SensingMethod'; break; // values 1-8
- case 'a300': $tag = 'FileSource'; break; // integer
- case 'a301': $tag = 'SceneType'; break; // integer
- case 'a302': $tag = 'CFAPattern'; break; // undefined data type
- case 'a401': $tag = 'CustomerRender'; break; // values 0 or 1
- case 'a402': $tag = 'ExposureMode'; break; // values 0-2
- case 'a403': $tag = 'WhiteBalance'; break; // values 0 or 1
- case 'a404': $tag = 'DigitalZoomRatio'; break; // positive rational number
- case 'a405': $tag = 'FocalLengthIn35mmFilm'; break;
- case 'a406': $tag = 'SceneCaptureMode'; break; // values 0-3
- case 'a407': $tag = 'GainControl'; break; // values 0-4
- case 'a408': $tag = 'Contrast'; break; // values 0-2
- case 'a409': $tag = 'Saturation'; break; // values 0-2
- case 'a40a': $tag = 'Sharpness'; break; // values 0-2
- // used by Interoperability IFD
- case '0001': $tag = 'InteroperabilityIndex'; break; // text string 3 bytes long
- case '0002': $tag = 'InteroperabilityVersion'; break; // datatype undefined
- case '1000': $tag = 'RelatedImageFileFormat'; break; // text string up to 999 bytes long
- case '1001': $tag = 'RelatedImageWidth'; break; // integer in range 0-65535
- case '1002': $tag = 'RelatedImageLength'; break; // integer in range 0-65535
-
- // used by IFD1 'Thumbnail'
- case '0100': $tag = 'ImageWidth'; break; // integer in range 0-65535
- case '0101': $tag = 'ImageLength'; break; // integer in range 0-65535
- case '0102': $tag = 'BitsPerSample'; break; // integers in range 0-65535
- case '0103': $tag = 'Compression'; break; // values 1 or 6
- case '0106': $tag = 'PhotometricInterpretation'; break;// values 0-4
- case '010e': $tag = 'ThumbnailDescription'; break; // text string up to 999 bytes long
- case '010f': $tag = 'ThumbnailMake'; break; // text string up to 999 bytes long
- case '0110': $tag = 'ThumbnailModel'; break; // text string up to 999 bytes long
- case '0111': $tag = 'StripOffsets'; break; // ??
- case '0112': $tag = 'ThumbnailOrientation'; break; // integer 1-9
- case '0115': $tag = 'SamplesPerPixel'; break; // ??
- case '0116': $tag = 'RowsPerStrip'; break; // ??
- case '0117': $tag = 'StripByteCounts'; break; // ??
- case '011a': $tag = 'ThumbnailXResolution'; break; // positive rational number
- case '011b': $tag = 'ThumbnailYResolution'; break; // positive rational number
- case '011c': $tag = 'PlanarConfiguration'; break; // values 1 or 2
- case '0128': $tag = 'ThumbnailResolutionUnit'; break; // values 1-3
- case '0201': $tag = 'JpegIFOffset'; break;
- case '0202': $tag = 'JpegIFByteCount'; break;
- case '0212': $tag = 'YCbCrSubSampling'; break;
-
- // misc
- case '00ff': $tag = 'SubfileType'; break;
- case '012d': $tag = 'TransferFunction'; break;
- case '013d': $tag = 'Predictor'; break;
- case '0142': $tag = 'TileWidth'; break;
- case '0143': $tag = 'TileLength'; break;
- case '0144': $tag = 'TileOffsets'; break;
- case '0145': $tag = 'TileByteCounts'; break;
- case '014a': $tag = 'SubIFDs'; break;
- case '015b': $tag = 'JPEGTables'; break;
- case '828d': $tag = 'CFARepeatPatternDim'; break;
- case '828e': $tag = 'CFAPattern'; break;
- case '828f': $tag = 'BatteryLevel'; break;
- case '83bb': $tag = 'IPTC/NAA'; break;
- case '8773': $tag = 'InterColorProfile'; break;
-
- case '8828': $tag = 'OECF'; break;
- case '8829': $tag = 'Interlace'; break;
- case '882a': $tag = 'TimeZoneOffset'; break;
- case '882b': $tag = 'SelfTimerMode'; break;
- case '920b': $tag = 'FlashEnergy'; break;
- case '920c': $tag = 'SpatialFrequencyResponse'; break;
- case '920d': $tag = 'Noise'; break;
- case '9211': $tag = 'ImageNumber'; break;
- case '9212': $tag = 'SecurityClassification'; break;
- case '9214': $tag = 'SubjectLocation'; break;
- case '9215': $tag = 'ExposureIndex'; break;
- case '9216': $tag = 'TIFF/EPStandardID'; break;
- case 'a20b': $tag = 'FlashEnergy'; break;
-
- default: $tag = 'unknown:'.$tag; break;
- }
- return $tag;
- }
- //================================================================================================
- // Looks up the datatype
- //================================================================================================
- function lookup_type(&$type,&$size) {
- switch($type) {
- case '0001': $type = 'UBYTE'; $size=1; break;
- case '0002': $type = 'ASCII'; $size=1; break;
- case '0003': $type = 'USHORT'; $size=2; break;
- case '0004': $type = 'ULONG'; $size=4; break;
- case '0005': $type = 'URATIONAL'; $size=8; break;
- case '0006': $type = 'SBYTE'; $size=1; break;
- case '0007': $type = 'UNDEFINED'; $size=1; break;
- case '0008': $type = 'SSHORT'; $size=2; break;
- case '0009': $type = 'SLONG'; $size=4; break;
- case '000a': $type = 'SRATIONAL'; $size=8; break;
- case '000b': $type = 'FLOAT'; $size=4; break;
- case '000c': $type = 'DOUBLE'; $size=8; break;
- default: $type = 'error:'.$type; $size=0; break;
- }
- return $type;
- }
- //================================================================================================
- // processes a irrational number
- //================================================================================================
- function unRational($data, $type, $intel) {
- $data = bin2hex($data);
- if ($intel == 1) {
- $data = intel2Moto($data);
- $top = hexdec(substr($data,8,8)); // intel stores them bottom-top
- $bottom = hexdec(substr($data,0,8)); // intel stores them bottom-top
- } else {
- $top = hexdec(substr($data,0,8)); // motorola stores them top-bottom
- $bottom = hexdec(substr($data,8,8)); // motorola stores them top-bottom
- }
-
- if ($type == 'SRATIONAL' && $top > 2147483647) $top = $top - 4294967296; // this makes the number signed instead of unsigned
- if ($bottom != 0)
- $data=$top/$bottom;
- else
- if ($top == 0)
- $data = 0;
- else
- $data = $top.'/'.$bottom;
- return $data;
- }
- //================================================================================================
- // processes a rational number
- //================================================================================================
- function rational($data,$type,$intel) {
- if (($type == 'USHORT' || $type == 'SSHORT')) {
- $data = substr($data,0,2);
- }
- $data = bin2hex($data);
- if ($intel == 1) {
- $data = intel2Moto($data);
- }
- $data = hexdec($data);
- if ($type == 'SSHORT' && $data > 32767) $data = $data - 65536; // this makes the number signed instead of unsigned
- if ($type == 'SLONG' && $data > 2147483647) $data = $data - 4294967296; // this makes the number signed instead of unsigned
- return $data;
- }
- //================================================================================================
- // Formats Data for the data type
- //================================================================================================
- function formatData($type,$tag,$intel,$data) {
- switch ($type) {
- case 'ASCII':
- if (($pos = strpos($data, chr(0))) !== false) { // Search for a null byte and stop there.
- $data = substr($data, 0, $pos);
- }
- if ($tag == '010f') $data = ucwords(strtolower(trim($data))); // Format certain kinds of strings nicely (Camera make etc.)
- break;
- case 'URATIONAL':
- case 'SRATIONAL':
- switch ($tag) {
- case '011a': // XResolution
- case '011b': // YResolution
- $data = round(unRational($data,$type,$intel)).' dots per ResolutionUnit';
- break;
- case '829a': // Exposure Time
- $data = formatExposure(unRational($data,$type,$intel));
- break;
- case '829d': // FNumber
- $data = 'f/'.unRational($data,$type,$intel);
- break;
- case '9204': // ExposureBiasValue
- $data = round(unRational($data,$type,$intel), 2) . ' EV';
- break;
- case '9205': // ApertureValue
- case '9202': // MaxApertureValue
- // ApertureValue is given in the APEX Mode. Many thanks to Matthieu Froment for this code
- // The formula is : Aperture = 2*log2(FNumber) <=> FNumber = e((Aperture.ln(2))/2)
- $datum = exp((unRational($data,$type,$intel)*log(2))/2);
- $data = round($datum, 1);// Focal is given with a precision of 1 digit.
- $data='f/'.$datum;
- break;
- case '920a': // FocalLength
- $data = unRational($data,$type,$intel).' mm';
- break;
- case '9201': // ShutterSpeedValue
- // The ShutterSpeedValue is given in the APEX mode. Many thanks to Matthieu Froment for this code
- // The formula is : Shutter = - log2(exposureTime) (Appendix C of EXIF spec.)
- // Where shutter is in APEX, log2(exposure) = ln(exposure)/ln(2)
- // So final formula is : exposure = exp(-ln(2).shutter)
- // The formula can be developed : exposure = 1/(exp(ln(2).shutter))
- $datum = exp(unRational($data,$type,$intel) * log(2));
- if ($datum != 0) $datum = 1/$datum;
- $data = formatExposure($datum);
- break;
- default:
- $data = unRational($data,$type,$intel);
- break;
- }
- break;
- case 'USHORT':
- case 'SSHORT':
- case 'ULONG':
- case 'SLONG':
- case 'FLOAT':
- case 'DOUBLE':
- $data = rational($data,$type,$intel);
- switch ($tag) {
- case '0112': // Orientation
- // Example of how all of these tag formatters should be...
- switch ($data) {
- case 0 : // not set, presume normal
- case 1 : $data = gettext('1: Normal (0 deg)'); break;
- case 2 : $data = gettext('2: Mirrored'); break;
- case 3 : $data = gettext('3: Upside-down'); break;
- case 4 : $data = gettext('4: Upside-down Mirrored'); break;
- case 5 : $data = gettext('5: 90 deg CW Mirrored'); break;
- case 6 : $data = gettext('6: 90 deg CCW'); break;
- case 7 : $data = gettext('7: 90 deg CCW Mirrored'); break;
- case 8 : $data = gettext('8: 90 deg CW'); break;
- default : $data = sprintf(gettext('%d: Unknown'),$data); break;
- }
- break;
- case '0128': // ResolutionUnit
- case 'a210': // FocalPlaneResolutionUnit
- case '0128': // ThumbnailResolutionUnit
- switch ($data) {
- case 1: $data = gettext('No Unit'); break;
- case 2: $data = gettext('Inch'); break;
- case 3: $data = gettext('Centimeter'); break;
- }
- break;
- case '0213': // YCbCrPositioning
- switch ($data) {
- case 1: $data = gettext('Center of Pixel Array'); break;
- case 2: $data = gettext('Datum Point'); break;
- }
- break;
- case '8822': // ExposureProgram
- switch ($data) {
- case 1: $data = gettext('Manual'); break;
- case 2: $data = gettext('Program'); break;
- case 3: $data = gettext('Aperture Priority'); break;
- case 4: $data = gettext('Shutter Priority'); break;
- case 5: $data = gettext('Program Creative'); break;
- case 6: $data = gettext('Program Action'); break;
- case 7: $data = gettext('Portrait'); break;
- case 8: $data = gettext('Landscape'); break;
- default: $data = gettext('Unknown').': '.$data; break;
- }
- break;
- case '9207': // MeteringMode
- switch ($data) {
- case 1: $data = gettext('Average'); break;
- case 2: $data = gettext('Center Weighted Average'); break;
- case 3: $data = gettext('Spot'); break;
- case 4: $data = gettext('Multi-Spot'); break;
- case 5: $data = gettext('Pattern'); break;
- case 6: $data = gettext('Partial'); break;
- case 255: $data = gettext('Other'); break;
- default: $data = gettext('Unknown').': '.$data; break;
- }
- break;
- case '9208': // LightSource
- switch ($data) {
- case 1: $data = gettext('Daylight'); break;
- case 2: $data = gettext('Fluorescent'); break;
- case 3: $data = gettext('Tungsten'); break; // 3 Tungsten (Incandescent light)
- // 4 Flash
- // 9 Fine Weather
- case 10: $data = gettext('Flash'); break; // 10 Cloudy Weather
- // 11 Shade
- // 12 Daylight Fluorescent (D 5700 - 7100K)
- // 13 Day White Fluorescent (N 4600 - 5400K)
- // 14 Cool White Fluorescent (W 3900 -4500K)
- // 15 White Fluorescent (WW 3200 - 3700K)
- // 10 Flash
- case 17: $data = gettext('Standard Light A'); break;
- case 18: $data = gettext('Standard Light B'); break;
- case 19: $data = gettext('Standard Light C'); break;
- case 20: $data = gettext('D55'); break;
- case 21: $data = gettext('D65'); break;
- case 22: $data = gettext('D75'); break;
- case 23: $data = gettext('D50'); break;
- case 24: $data = gettext('ISO Studio Tungsten'); break;
- case 255: $data = gettext('Other'); break;
- default: $data = gettext('Unknown').': '.$data; break;
- }
- break;
- case '9209': // Flash
- switch ($data) {
- case 0: $data = gettext('No Flash'); break;
- case 1: $data = gettext('Flash'); break;
- case 5: $data = gettext('Flash, strobe return light not detected'); break;
- case 7: $data = gettext('Flash, strobe return light detected'); break;
- case 9: $data = gettext('Compulsory Flash'); break;
- case 13: $data = gettext('Compulsory Flash, Return light not detected'); break;
- case 15: $data = gettext('Compulsory Flash, Return light detected'); break;
- case 16: $data = gettext('No Flash'); break;
- case 24: $data = gettext('No Flash'); break;
- case 25: $data = gettext('Flash, Auto-Mode'); break;
- case 29: $data = gettext('Flash, Auto-Mode, Return light not detected'); break;
- case 31: $data = gettext('Flash, Auto-Mode, Return light detected'); break;
- case 32: $data = gettext('No Flash'); break;
- case 65: $data = gettext('Red Eye'); break;
- case 69: $data = gettext('Red Eye, Return light not detected'); break;
- case 71: $data = gettext('Red Eye, Return light detected'); break;
- case 73: $data = gettext('Red Eye, Compulsory Flash'); break;
- case 77: $data = gettext('Red Eye, Compulsory Flash, Return light not detected'); break;
- case 79: $data = gettext('Red Eye, Compulsory Flash, Return light detected'); break;
- case 89: $data = gettext('Red Eye, Auto-Mode'); break;
- case 93: $data = gettext('Red Eye, Auto-Mode, Return light not detected'); break;
- case 95: $data = gettext('Red Eye, Auto-Mode, Return light detected'); break;
- default: $data = gettext('Unknown').': '.$data; break;
- }
- break;
- case 'a001': // ColorSpace
- if ($data == 1) $data = gettext('sRGB');
- else $data = gettext('Uncalibrated');
- break;
- case 'a002': // ExifImageWidth
- case 'a003': // ExifImageHeight
- $data = $data. ' '.gettext('pixels');
- break;
- case '0103': // Compression
- switch ($data) {
- case 1: $data = gettext('No Compression'); break;
- case 6: $data = gettext('Jpeg Compression'); break;
- default: $data = gettext('Unknown').': '.$data; break;
- }
- break;
- case 'a217': // SensingMethod
- switch ($data) {
- case 1: $data = gettext('Not defined'); break;
- case 2: $data = gettext('One Chip Color Area Sensor'); break;
- case 3: $data = gettext('Two Chip Color Area Sensor'); break;
- case 4: $data = gettext('Three Chip Color Area Sensor'); break;
- case 5: $data = gettext('Color Sequential Area Sensor'); break;
- case 7: $data = gettext('Trilinear Sensor'); break;
- case 8: $data = gettext('Color Sequential Linear Sensor'); break;
- default: $data = gettext('Unknown').': '.$data; break;
- }
- break;
- case '0106': // PhotometricInterpretation
- switch ($data) {
- case 1: $data = gettext('Monochrome'); break;
- case 2: $data = gettext('RGB'); break;
- case 6: $data = gettext('YCbCr'); break;
- default: $data = gettext('Unknown').': '.$data; break;
- }
- break;
- //case "a408": // Contrast
- //case "a40a": //Sharpness
- // switch($data) {
- // case 0: $data="Normal"; break;
- // case 1: $data="Soft"; break;
- // case 2: $data="Hard"; break;
- // default: $data="Unknown"; break;
- // }
- // break;
- //case "a409": // Saturation
- // switch($data) {
- // case 0: $data="Normal"; break;
- // case 1: $data="Low saturation"; break;
- // case 2: $data="High saturation"; break;
- // default: $data="Unknown"; break;
- // }
- // break;
- //case "a402": // Exposure Mode
- // switch($data) {
- // case 0: $data="Auto exposure"; break;
- // case 1: $data="Manual exposure"; break;
- // case 2: $data="Auto bracket"; break;
- // default: $data="Unknown"; break;
- // }
- // break;
- }
- break;
- case 'UNDEFINED':
- switch ($tag) {
- case '9000': // ExifVersion
- case 'a000': // FlashPixVersion
- case '0002': // InteroperabilityVersion
- $data=gettext('version').' '.$data/100;
- break;
- case 'a300': // FileSource
- $data = bin2hex($data);
- $data = str_replace('00','',$data);
- $data = str_replace('03',gettext('Digital Still Camera'),$data);
- break;
- case 'a301': // SceneType
- $data = bin2hex($data);
- $data = str_replace('00','',$data);
- $data = str_replace('01',gettext('Directly Photographed'),$data);
- break;
- case '9101': // ComponentsConfiguration
- $data = bin2hex($data);
- $data = str_replace('01','Y',$data);
- $data = str_replace('02','Cb',$data);
- $data = str_replace('03','Cr',$data);
- $data = str_replace('04','R',$data);
- $data = str_replace('05','G',$data);
- $data = str_replace('06','B',$data);
- $data = str_replace('00','',$data);
- break;
- //case "9286": //UserComment
- // $encoding = rtrim(substr($data, 0, 8));
- // $data = rtrim(substr($data, 8));
- // break;
- }
- break;
- default:
- $data = bin2hex($data);
- if ($intel == 1) $data = intel2Moto($data);
- break;
- }
- return $data;
- }
- function formatExposure($data) {
- if (strpos($data,'/')===false) {
- if ($data > 1) {
- return round($data, 2).' '.gettext('sec');
- } else {
- $n=0; $d=0;
- ConvertToFraction($data, $n, $d);
- return $n.'/'.$d.' '.gettext('sec');
- }
- } else {
- return gettext('Bulb');
- }
- }
- //================================================================================================
- // Reads one standard IFD entry
- //================================================================================================
- function read_entry(&$result,$in,$seek,$intel,$ifd_name,$globalOffset) {
-
- if (feof($in)) { // test to make sure we can still read.
- $result['Errors'] = $result['Errors']+1;
- return;
- }
-
- // 2 byte tag
- $tag = bin2hex(fread($in, 2));
- if ($intel == 1) $tag = intel2Moto($tag);
- $tag_name = lookup_tag($tag);
-
- // 2 byte datatype
- $type = bin2hex(fread($in, 2));
- if ($intel == 1) $type = intel2Moto($type);
- lookup_type($type, $size);
-
- if (strpos($tag_name, 'unknown:') !== false && strpos($type, 'error:') !== false) { // we have an error
- $result['Errors'] = $result['Errors']+1;
- return;
- }
-
- // 4 byte number of elements
- $count = bin2hex(fread($in, 4));
- if ($intel == 1) $count = intel2Moto($count);
- $bytesofdata = $size*hexdec($count);
-
- // 4 byte value or pointer to value if larger than 4 bytes
- $value = fread( $in, 4 );
-
- if ($bytesofdata <= 4) { // if datatype is 4 bytes or less, its the value
- $data = $value;
- } else if ($bytesofdata < 100000) { // otherwise its a pointer to the value, so lets go get it
- $value = bin2hex($value);
- if ($intel == 1) $value = intel2Moto($value);
- $v = fseek($seek, $globalOffset+hexdec($value)); // offsets are from TIFF header which is 12 bytes from the start of the file
- if ($v == 0) {
- $data = fread($seek, $bytesofdata);
- } else if ($v == -1) {
- $result['Errors'] = $result['Errors']+1;
- }
- } else { // bytesofdata was too big, so the exif had an error
- $result['Errors'] = $result['Errors']+1;
- return;
- }
- if ($tag_name == 'MakerNote') { // if its a maker tag, we need to parse this specially
- $make = $result['IFD0']['Make'];
-
- if ($result['VerboseOutput'] == 1) {
- $result[$ifd_name]['MakerNote']['RawData'] = $data;
- }
- if (preg_match('/NIKON/i',$make)) {
- require_once(dirname(__FILE__).'/makers/nikon.php');
- parseNikon($data,$result);
- $result[$ifd_name]['KnownMaker'] = 1;
- } else if (preg_match('/OLYMPUS/i',$make)) {
- require_once(dirname(__FILE__).'/makers/olympus.php');
- parseOlympus($data,$result,$seek,$globalOffset);
- $result[$ifd_name]['KnownMaker'] = 1;
- } else if (preg_match('/Canon/i',$make)) {
- require_once(dirname(__FILE__).'/makers/canon.php');
- parseCanon($data,$result,$seek,$globalOffset);
- $result[$ifd_name]['KnownMaker'] = 1;
- } else if (preg_match('/FUJIFILM/i',$make)) {
- require_once(dirname(__FILE__).'/makers/fujifilm.php');
- parseFujifilm($data,$result);
- $result[$ifd_name]['KnownMaker'] = 1;
- } else if (preg_match('/SANYO/i',$make)) {
- require_once(dirname(__FILE__).'/makers/sanyo.php');
- parseSanyo($data,$result,$seek,$globalOffset);
- $result[$ifd_name]['KnownMaker'] = 1;
- } else if (preg_match('/Panasonic/i',$make)) {
- require_once(dirname(__FILE__).'/makers/panasonic.php');
- parsePanasonic($data,$result,$seek,$globalOffset);
- $result[$ifd_name]['KnownMaker'] = 1;
- } else {
- $result[$ifd_name]['KnownMaker'] = 0;
- }
- } else if ($tag_name == 'GPSInfoOffset') {
- require_once(dirname(__FILE__).'/makers/gps.php');
- $formated_data = formatData($type,$tag,$intel,$data);
- $result[$ifd_name]['GPSInfo'] = $formated_data;
- parseGPS($data,$result,$formated_data,$seek,$globalOffset);
- } else {
- // Format the data depending on the type and tag
- $formated_data = formatData($type,$tag,$intel,$data);
-
- $result[$ifd_name][$tag_name] = $formated_data;
-
- if ($result['VerboseOutput'] == 1) {
- if ($type == 'URATIONAL' || $type == 'SRATIONAL' || $type == 'USHORT' || $type == 'SSHORT' || $type == 'ULONG' || $type == 'SLONG' || $type == 'FLOAT' || $type == 'DOUBLE') {
- $data = bin2hex($data);
- if ($intel == 1) $data = intel2Moto($data);
- }
- $result[$ifd_name][$tag_name.'_Verbose']['RawData'] = $data;
- $result[$ifd_name][$tag_name.'_Verbose']['Type'] = $type;
- $result[$ifd_name][$tag_name.'_Verbose']['Bytes'] = $bytesofdata;
- }
- }
- }
- //================================================================================================
- // Pass in a file and this reads the EXIF data
- //
- // Usefull resources
- // http:// www.ba.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html
- // http:// www.w3.org/Graphics/JPEG/jfif.txt
- // http:// exif.org/
- // http:// www.ozhiker.com/electronics/pjmt/library/list_contents.php4
- // http:// www.ozhiker.com/electronics/pjmt/jpeg_info/makernotes.html
- // http:// pel.sourceforge.net/
- // http:// us2.php.net/manual/en/function.exif-read-data.php
- //================================================================================================
- function read_exif_data_raw($path,$verbose) {
-
- if ($path == '' || $path == 'none') return;
-
- $in = @fopen($path, 'rb'); // the b is for windows machines to open in binary mode
- $seek = @fopen($path, 'rb'); // There may be an elegant way to do this with one file handle.
-
- $globalOffset = 0;
-
- if (!isset($verbose)) $verbose=0;
-
- $result['VerboseOutput'] = $verbose;
- $result['Errors'] = 0;
-
- if (!$in || !$seek) { // if the path was invalid, this error will catch it
- $result['Errors'] = 1;
- $result['Error'][$result['Errors']] = gettext('The file could not be found.');
- return $result;
- }
- $GLOBALS['exiferFileSize'] = filesize($path);
-
- // First 2 bytes of JPEG are 0xFFD8
- $data = bin2hex(fread( $in, 2 ));
- if ($data == 'ffd8') {
- $result['ValidJpeg'] = 1;
- } else {
- $result['ValidJpeg'] = 0;
- fseek($in, 0);
- }
-
- $result['ValidIPTCData'] = 0;
- $result['ValidJFIFData'] = 0;
- $result['ValidEXIFData'] = 0;
- $result['ValidAPP2Data'] = 0;
- $result['ValidCOMData'] = 0;
-
- if ($result['ValidJpeg'] == 1) {
- // Next 2 bytes are MARKER tag (0xFFE#)
- $data = bin2hex(fread( $in, 2 ));
- $size = bin2hex(fread( $in, 2 ));
- // LOOP THROUGH MARKERS TILL YOU GET TO FFE1 (exif marker)
- $abortCount = 0;
- while(!feof($in) && $data!='ffe1' && $data!='ffc0' && $data!='ffd9' && ++$abortCount < 200) {
- if ($data == 'ffe0') { // JFIF Marker
- $result['ValidJFIFData'] = 1;
- $result['JFIF']['Size'] = hexdec($size);
-
- if (hexdec($size)-2 > 0) {
- $data = fread( $in, hexdec($size)-2);
- $result['JFIF']['Data'] = $data;
- }
-
- $result['JFIF']['Identifier'] = substr($data,0,5);;
- $result['JFIF']['ExtensionCode'] = bin2hex(substr($data,6,1));
-
- $globalOffset+=hexdec($size)+2;
-
- } else if ($data == 'ffed') { // IPTC Marker
- $result['ValidIPTCData'] = 1;
- $result['IPTC']['Size'] = hexdec($size);
-
- if (hexdec($size)-2 > 0) {
- $data = fread( $in, hexdec($size)-2);
- $result['IPTC']['Data'] = $data ;
- }
- $globalOffset+=hexdec($size)+2;
-
- } else if ($data == 'ffe2') { // EXIF extension Marker
- $result['ValidAPP2Data'] = 1;
- $result['APP2']['Size'] = hexdec($size);
-
- if (hexdec($size)-2 > 0) {
- $data = fread( $in, hexdec($size)-2);
- $result['APP2']['Data'] = $data ;
- }
- $globalOffset+=hexdec($size)+2;
-
- } else if ($data == 'fffe') { // COM extension Marker
- $result['ValidCOMData'] = 1;
- $result['COM']['Size'] = hexdec($size);
-
- if (hexdec($size)-2 > 0) {
- $data = fread( $in, hexdec($size)-2);
- $result['COM']['Data'] = $data ;
- }
- $globalOffset+=hexdec($size)+2;
-
- } else if ($data == 'ffe1') {
- $result['ValidEXIFData'] = 1;
- }
-
- $data = bin2hex(fread( $in, 2 ));
- $size = bin2hex(fread( $in, 2 ));
- }
- // END MARKER LOOP
-
- if ($data == 'ffe1') {
- $result['ValidEXIFData'] = 1;
- } else {
- fclose($in);
- fclose($seek);
- return $result;
- }
-
- // Size of APP1
- $result['APP1Size'] = hexdec($size);
-
- // Start of APP1 block starts with 'Exif' header (6 bytes)
- $header = fread( $in, 6 );
- } // END IF ValidJpeg
-
- // Then theres a TIFF header with 2 bytes of endieness (II or MM)
- $header = fread( $in, 2 );
- if ($header==='II') {
- $intel=1;
- $result['Endien'] = 'Intel';
- } else if ($header==='MM') {
- $intel=0;
- $result['Endien'] = 'Motorola';
- } else {
- $intel=1; // not sure what the default should be, but this seems reasonable
- $result['Endien'] = 'Unknown';
- }
-
- // 2 bytes of 0x002a
- $tag = bin2hex(fread( $in, 2 ));
-
- // Then 4 bytes of offset to IFD0 (usually 8 which includes all 8 bytes of TIFF header)
- $offset = bin2hex(fread( $in, 4 ));
- if ($intel == 1) $offset = intel2Moto($offset);
-
- // Check for extremely large values here
- if (hexdec($offset) > 100000) {
- $result['ValidEXIFData'] = 0;
- fclose($in);
- fclose($seek);
- return $result;
- }
- if (hexdec($offset)>8) $unknown = fread( $in, hexdec($offset)-8); // fixed this bug in 1.3
-
- // add 12 to the offset to account for TIFF header
- if ($result['ValidJpeg'] == 1) {
- $globalOffset+=12;
- }
-
-
- //===========================================================
- // Start of IFD0
- $num = bin2hex(fread( $in, 2 ));
- if ($intel == 1) $num = intel2Moto($num);
- $num = hexdec($num);
- $result['IFD0NumTags'] = $num;
-
- if ($num<1000) { // 1000 entries is too much and is probably an error.
- for($i=0; $i<$num; $i++) {
- read_entry($result,$in,$seek,$intel,'IFD0',$globalOffset);
- }
- } else {
- $result['Errors'] = $result['Errors']+1;
- $result['Error'][$result['Errors']] = 'Illegal size for IFD0';
- }
-
- // store offset to IFD1
- $offset = bin2hex(fread( $in, 4 ));
- if ($intel == 1) $offset = intel2Moto($offset);
- $result['IFD1Offset'] = hexdec($offset);
-
- // Check for SubIFD
- if (!isset($result['IFD0']['ExifOffset']) || $result['IFD0']['ExifOffset'] == 0) {
- fclose($in);
- fclose($seek);
- return $result;
- }
-
- // seek to SubIFD (Value of ExifOffset tag) above.
- $ExitOffset = $result['IFD0']['ExifOffset'];
- $v = fseek($in,$globalOffset+$ExitOffset);
- if ($v == -1) {
- $result['Errors'] = $result['Errors']+1;
- $result['Error'][$result['Errors']] = gettext('Could not Find SubIFD');
- }
-
- //===========================================================
- // Start of SubIFD
- $num = bin2hex(fread( $in, 2 ));
- if ($intel == 1) $num = intel2Moto($num);
- $num = hexdec($num);
- $result['SubIFDNumTags'] = $num;
-
- if ($num<1000) { // 1000 entries is too much and is probably an error.
- for($i=0; $i<$num; $i++) {
- read_entry($result,$in,$seek,$intel,'SubIFD',$globalOffset);
- }
- } else {
- $result['Errors'] = $result['Errors']+1;
- $result['Error'][$result['Errors']] = gettext('Illegal size for SubIFD');
- }
-
- // Add the 35mm equivalent focal length:
- if (isset($result['IFD0']['FocalLengthIn35mmFilm']) && !isset($result['SubIFD']['FocalLengthIn35mmFilm'])) { // found in the wrong place
- $result['SubIFD']['FocalLengthIn35mmFilm'] = $result['IFD0']['FocalLengthIn35mmFilm'];
- }
- if (!isset($result['SubIFD']['FocalLengthIn35mmFilm'])) {
- $result['SubIFD']['FocalLengthIn35mmFilm'] = get35mmEquivFocalLength($result);
- }
-
- // Check for IFD1
- if (!isset($result['IFD1Offset']) || $result['IFD1Offset'] == 0) {
- fclose($in);
- fclose($seek);
- return $result;
- }
- // seek to IFD1
- $v = fseek($in,$globalOffset+$result['IFD1Offset']);
- if ($v == -1) {
- $result['Errors'] = $result['Errors']+1;
- $result['Error'][$result['Errors']] = gettext('Could not Find IFD1');
- }
-
- //===========================================================
- // Start of IFD1
- $num = bin2hex(fread( $in, 2 ));
- if ($intel == 1) $num = intel2Moto($num);
- $num = hexdec($num);
- $result['IFD1NumTags'] = $num;
-
- if ($num<1000) { // 1000 entries is too much and is probably an error.
- for($i=0; $i<$num; $i++) {
- read_entry($result,$in,$seek,$intel,'IFD1',$globalOffset);
- }
- } else {
- $result['Errors'] = $result['Errors']+1;
- $result['Error'][$result['Errors']] = gettext('Illegal size for IFD1');
- }
- // If verbose output is on, include the thumbnail raw data...
- if ($result['VerboseOutput'] == 1 && $result['IFD1']['JpegIFOffset']>0 && $result['IFD1']['JpegIFByteCount']>0) {
- $v = fseek($seek,$globalOffset+$result['IFD1']['JpegIFOffset']);
- if ($v == 0) {
- $data = fread($seek, $result['IFD1']['JpegIFByteCount']);
- } else if ($v == -1) {
- $result['Errors'] = $result['Errors']+1;
- }
- $result['IFD1']['ThumbnailData'] = $data;
- }
-
-
- // Check for Interoperability IFD
- if (!isset($result['SubIFD']['ExifInteroperabilityOffset']) || $result['SubIFD']['ExifInteroperabilityOffset'] == 0) {
- fclose($in);
- fclose($seek);
- return $result;
- }
- // Seek to InteroperabilityIFD
- $v = fseek($in,$globalOffset+$result['SubIFD']['ExifInteroperabilityOffset']);
- if ($v == -1) {
- $result['Errors'] = $result['Errors']+1;
- $result['Error'][$result['Errors']] = gettext('Could not Find InteroperabilityIFD');
- }
-
- //===========================================================
- // Start of InteroperabilityIFD
- $num = bin2hex(fread( $in, 2 ));
- if ($intel == 1) $num = intel2Moto($num);
- $num = hexdec($num);
- $result['InteroperabilityIFDNumTags'] = $num;
-
- if ($num<1000) { // 1000 entries is too much and is probably an error.
- for($i=0; $i<$num; $i++) {
- read_entry($result,$in,$seek,$intel,'InteroperabilityIFD',$globalOffset);
- }
- } else {
- $result['Errors'] = $result['Errors']+1;
- $result['Error'][$result['Errors']] = gettext('Illegal size for InteroperabilityIFD');
- }
- fclose($in);
- fclose($seek);
- return $result;
- }
- //=========================================================
- // Converts a floating point number into a simple fraction.
- //=========================================================
- function ConvertToFraction($v, &$n, &$d) {
- if ($v == 0) {
- $n = 0;
- $d = 1;
- return;
- }
- for ($n=1; $n<100; $n++) {
- $v1 = 1/$v*$n;
- $d = round($v1, 0);
- if (abs($d - $v1) < 0.02) return; // within tolarance
- }
- }
- //================================================================================================
- // Calculates the 35mm-equivalent focal length from the reported sensor resolution, by Tristan Harward.
- //================================================================================================
- function get35mmEquivFocalLength(&$result) {
- if (isset($result['SubIFD']['ExifImageWidth'])) {
- $width = $result['SubIFD']['ExifImageWidth'];
- } else {
- $width = 0;
- }
- if (isset($result['SubIFD']['FocalPlaneResolutionUnit'])) {
- $units = $result['SubIFD']['FocalPlaneResolutionUnit'];
- } else {
- $units = '';
- }
- $unitfactor = 1;
- switch ($units) {
- case 'Inch' : $unitfactor = 25.4; break;
- case 'Centimeter' : $unitfactor = 10; break;
- case 'No Unit' : $unitfactor = 25.4; break;
- default : $unitfactor = 25.4;
- }
- if (isset($result['SubIFD']['FocalPlaneXResolution'])) {
- $xres = $result['SubIFD']['FocalPlaneXResolution'];
- } else {
- $xres = '';
- }
- if (isset($result['SubIFD']['FocalLength'])) {
- $fl = $result['SubIFD']['FocalLength'];
- } else {
- $fl = 0;
- }
- if (($width != 0) && !empty($units) && !empty($xres) && !empty($fl) && !empty($width)) {
- $ccdwidth = ($width * $unitfactor) / $xres;
- $equivfl = $fl / $ccdwidth*36+0.5;
- return $equivfl;
- }
- return null;
- }
- ?>