[4686] | 1 | <?php |
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| 2 | /** |
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| 3 | * --:: JPEG MetaDatas ::------------------------------------------------------- |
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| 4 | * |
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[6889] | 5 | * Version : 1.1.0 |
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[6729] | 6 | * Date : 2010-07-29 |
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[4686] | 7 | * |
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| 8 | * Author : Grum |
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| 9 | * email : grum at piwigo.org |
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| 10 | * website : http://photos.grum.fr |
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| 11 | * |
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| 12 | * << May the Little SpaceFrog be with you ! >> |
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| 13 | * |
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| 14 | * +-----------------------------------------------------------------------+ |
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| 15 | * | JpegMetaData - a PHP based Jpeg Metadata manager | |
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| 16 | * +-----------------------------------------------------------------------+ |
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| 17 | * | Copyright(C) 2010 Grum - http://www.grum.fr | |
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| 18 | * +-----------------------------------------------------------------------+ |
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| 19 | * | This program is free software; you can redistribute it and/or modify | |
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| 20 | * | it under the terms of the GNU General Public License as published by | |
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| 21 | * | the Free Software Foundation | |
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| 22 | * | | |
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| 23 | * | This program is distributed in the hope that it will be useful, but | |
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| 24 | * | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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| 25 | * | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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| 26 | * | General Public License for more details. | |
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| 27 | * | | |
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| 28 | * | You should have received a copy of the GNU General Public License | |
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| 29 | * | along with this program; if not, write to the Free Software | |
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| 30 | * | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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| 31 | * | USA. | |
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| 32 | * +-----------------------------------------------------------------------+ |
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| 33 | * |
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| 34 | * |
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| 35 | * +-:: HISTORY ::--------+----------------------------------------------------- |
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| 36 | * | | | |
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| 37 | * | Release | Date | |
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| 38 | * +---------+------------+----------------------------------------------------- |
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| 39 | * | 0.1.0a | 2009-12-26 | |
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| 40 | * | | | |
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[6722] | 41 | * | 1.0.0 | | * first public release |
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[4686] | 42 | * | | | |
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[6889] | 43 | * | 1.1.0 | 2010-07-29 | * mantis bug:1686 |
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[6722] | 44 | * | | | . bug reported on IfdReader |
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| 45 | * | | | When sub IFD (0x8769) refers to a sub IFD with |
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| 46 | * | | | an offset lower than the current IFD, the reader |
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| 47 | * | | | loops on the current data block and terminate |
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| 48 | * | | | with an error 500 ; fix consist to ignore this |
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| 49 | * | | | kind of offset, but it's not the right solution |
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| 50 | * | | | (right solution: to be able to read negative |
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| 51 | * | | | offset) |
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[6729] | 52 | * | | | |
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[6722] | 53 | * | | | * mantis feature : 1719 |
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| 54 | * | | | . Coding a DateTime class ; used only if there is |
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| 55 | * | | | no PHP built-in DateTime class |
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[4686] | 56 | * | | | |
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[6729] | 57 | * | | | * add the "schema" property to Tag class |
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[4686] | 58 | * | | | |
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[6729] | 59 | * | | | * fixed bug about filtering schema |
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| 60 | * | | | . when loading metadata, filter on schema are now |
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| 61 | * | | | applied ; 'magic' metadata are computed even if |
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| 62 | * | | | the other schema are filtered |
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[4686] | 63 | * | | | |
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[6889] | 64 | * | | | * add the "getTag" function |
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[4686] | 65 | * | | | |
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[6889] | 66 | * | 1.1.1 | 2010-09-13 | * mantis bug:1826 |
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| 67 | * | | | . digiKam XMP tags are not recognized |
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[4686] | 68 | * | | | |
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[6949] | 69 | * | | | * mantis bug:1859 |
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[7399] | 70 | * | | | . JpegMetadata class can't manage multiple IPTC |
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[6949] | 71 | * | | | keywords |
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[4686] | 72 | * | | | |
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[6986] | 73 | * | | | * mantis bug:1870 |
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| 74 | * | | | . Xmp ISOSpeedRatings was not interpreted by |
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| 75 | * | | | 'Magic' metadata |
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[4686] | 76 | * | | | |
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[7399] | 77 | * | 1.1.3 | 2010-09-30 | * mantis bug:1894 |
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| 78 | * | | | . Error when filling the metadata repository |
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[6729] | 79 | * | | | |
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[7399] | 80 | * | | | * mantis bug:1898 |
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| 81 | * | | | . Warning "division by zero" on Canon images |
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[6729] | 82 | * | | | |
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[7399] | 83 | * | | | * mantis bug:1911 |
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| 84 | * | | | . Unable to read Jpeg file if there is extradata |
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| 85 | * | | | after the EOI marker |
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[6729] | 86 | * | | | |
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[7399] | 87 | * | | | * mantis bug:1863 |
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| 88 | * | | | . Except "keywords" meta, all IPTC meta declared |
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| 89 | * | | | as "repeatable" are not managed |
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[6949] | 90 | * | | | |
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[7399] | 91 | * | | | * mantis bug:1955 |
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| 92 | * | | | . Incorrect mapping for IPTC File format |
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[6949] | 93 | * | | | |
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[7441] | 94 | * | | | * mantis bug:1955 |
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| 95 | * | | | . Incorrect mapping for IPTC File format |
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| 96 | * | | | |
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[7399] | 97 | * | | | * mantis bug:1956 |
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| 98 | * | | | . IPTC "Subject Reference" is not implemented |
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[6986] | 99 | * | | | |
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[7441] | 100 | * | | | * mantis bug:1965 |
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| 101 | * | | | . add XML <lr:hierarchicalSubject> markup |
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[7399] | 102 | * | | | |
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[7511] | 103 | * | | | * mantis bug:1975 |
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| 104 | * | | | . Implement COM segment as a tag |
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[7441] | 105 | * | | | |
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[7511] | 106 | * | | | * mantis bug:1976 |
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| 107 | * | | | . Implement keywords as magic tag |
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[7441] | 108 | * | | | |
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[7519] | 109 | * | | | * mantis bug:1978 |
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| 110 | * | | | . Some meta names are not translated in french |
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[7441] | 111 | * | | | |
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[8969] | 112 | * | 1.1.4 | 2011-01-29 | * mantis bug:2141 |
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| 113 | * | | | . MakerNotes on some Nikon file are not recognized |
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| 114 | * | | | and script is terminated with a memory allocation |
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| 115 | * | | | error |
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[7441] | 116 | * | | | |
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| 117 | * | | | |
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| 118 | * | | | |
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| 119 | * | | | |
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[4686] | 120 | * +---------+------------+----------------------------------------------------- |
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| 121 | * |
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| 122 | * |
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| 123 | * ----------------------------------------------------------------------------- |
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| 124 | * |
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| 125 | * References about definition & interpretation of metadata tags : |
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| 126 | * - EXIF 2.20 Specification => http://www.exif.org/Exif2-2.PDF |
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| 127 | * - TIFF 6.0 Specification => http://partners.adobe.com/public/developer/en/tiff/TIFF6.pdf |
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| 128 | * - Exiftool by Phil Harvey => http://www.sno.phy.queensu.ca/~phil/exiftool/ |
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| 129 | * http://owl.phy.queensu.ca/~phil/exiftool/TagNames |
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| 130 | * - Exiv2 by Andreas Huggel => http://www.exiv2.org/ |
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| 131 | * - MetaData working group => http://www.metadataworkinggroup.org/specs/ |
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| 132 | * - Adobe XMP Developer Center => http://www.adobe.com/devnet/xmp/ |
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| 133 | * - Gezuz => http://gezus.one.free.fr/?Plugin-EXIF-pour-Spip-1-9-2 |
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| 134 | * - JPEG format => http://crousseau.free.fr/imgfmt_jpeg.htm |
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| 135 | * - International Press Telecomunication Council specifications |
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| 136 | * => http://www.iptc.org/ |
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| 137 | * - IPTC headers structure => http://www.codeproject.com/KB/graphics/iptc.aspx?msg=1014929 |
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| 138 | * - CPAN => http://search.cpan.org/dist/Image-MetaData-JPEG/lib/Image/MetaData/JPEG/Structures.pod |
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| 139 | * => http://search.cpan.org/~bettelli/Image-MetaData-JPEG/lib/Image/MetaData/JPEG/MakerNotes.pod |
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| 140 | * |
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| 141 | * ----------------------------------------------------------------------------- |
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| 142 | * To support internationalization the JpegMetaData package uses ".po" and ".mo" |
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| 143 | * files, and use "php-gettext" |
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| 144 | * ==> See files in External/php-gettext for more information about this project |
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| 145 | * ----------------------------------------------------------------------------- |
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| 146 | * |
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| 147 | * The JpegMetaData is the main class for reading metadata of a Jpeg file |
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| 148 | * |
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| 149 | * It provides two essentialy high level functions to read different kind of |
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| 150 | * metadata (EXIF, IPTC, XMP) : |
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| 151 | * - (static) getTagList |
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| 152 | * - load |
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| 153 | * - getTags |
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[6889] | 154 | * - getTag |
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[4686] | 155 | * |
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| 156 | * ----------------------------------------------------------------------------- |
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| 157 | * |
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| 158 | * .. Notes .. |
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| 159 | * |
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| 160 | * About tags and translation in local lang |
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| 161 | * With the 'getTags()' method, the JpegMetaData returns an array of Tag objects |
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| 162 | * found in the jpeg file. |
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| 163 | * |
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| 164 | * A Tag object have 2 properties that can be translated into a local language : |
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| 165 | * - the name, getted with 'getName()' |
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| 166 | * - the valueLabel, getted with 'getLabel()' |
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| 167 | * |
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| 168 | * Theses properties ARE NOT translated automatically. |
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| 169 | * |
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| 170 | * You can translate it with the Locale class, by using the static method 'get' |
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| 171 | * |
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| 172 | * Example : |
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| 173 | * Locale::get($myTag->getName()) will return the translated name of the Tag |
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| 174 | * Locale::get($myTag->getLabel()) will return the translated value of the Tag |
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| 175 | * |
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| 176 | * ===========> See Tag.class.php to know more about the Tag class <============ |
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| 177 | * ========> See Locale.class.php to know more about the Locale class <========= |
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| 178 | * |
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| 179 | * |
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| 180 | * ----------------------------------------------------------------------------- |
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| 181 | */ |
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| 182 | |
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| 183 | define("JPEG_METADATA_DIR", dirname(__FILE__)."/"); |
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| 184 | |
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[6722] | 185 | require_once(JPEG_METADATA_DIR."Common/DateTime.class.php"); |
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[4686] | 186 | require_once(JPEG_METADATA_DIR."Readers/JpegReader.class.php"); |
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[4998] | 187 | require_once(JPEG_METADATA_DIR."TagDefinitions/MagicTags.class.php"); |
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[4686] | 188 | |
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| 189 | class JpegMetaData |
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| 190 | { |
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| 191 | const TAGFILTER_KNOWN = 0x01; |
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| 192 | const TAGFILTER_IMPLEMENTED = 0x02; |
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| 193 | const TAGFILTER_ALL = 0x03; |
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| 194 | |
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| 195 | private $jpeg = null; |
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[5789] | 196 | protected $tags = Array(); |
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[4686] | 197 | private $options = Array(); |
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| 198 | |
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| 199 | /** |
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| 200 | * this static function returns an array of tags definitions |
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| 201 | * |
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| 202 | * the only parameter is an array to determine filter options |
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| 203 | * |
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| 204 | * ---------------------+--------------------------------------------------- |
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| 205 | * key | descriptions/values |
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| 206 | * ---------------------+--------------------------------------------------- |
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| 207 | * filter | Integer |
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| 208 | * | This options is used to filter implemented tag |
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| 209 | * | JpegMetaData::TAGFILTER_ALL |
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| 210 | * | => returns all the tags |
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| 211 | * | JpegMetaData::TAGFILTER_IMPLEMENTED |
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| 212 | * | => returns only the implemented tags |
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| 213 | * | |
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| 214 | * optimizeIptcDateTime | Boolean |
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| 215 | * | IPTC Date/Time are separated into 2 tags |
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| 216 | * | if this option is set to true, only dates tags are |
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| 217 | * | returned (assuming this option is used when an |
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| 218 | * | image file is loaded) |
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| 219 | * | |
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| 220 | * exif | Boolean |
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| 221 | * iptc | If set to true, the function returns all the tags |
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| 222 | * | known for the specified type tag |
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| 223 | * xmp | |
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| 224 | * maker | maker => returns specifics tags from all the known |
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[4998] | 225 | * magic | makers |
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[4686] | 226 | * | |
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| 227 | * ---------------------+--------------------------------------------------- |
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| 228 | * |
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| 229 | * returned value is an array |
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| 230 | * each keys is a tag name and the associated value is a 2-level array |
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| 231 | * 'implemented' => Boolean, allowing to know if the tags is implemented or |
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| 232 | * not |
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[4931] | 233 | * 'translatable'=> Boolean, allowing to know if the tag value can be |
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| 234 | * translated |
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[4686] | 235 | * 'name' => String, the tag name translated in locale language |
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| 236 | * |
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| 237 | * @Param Array $options (optional) |
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[4931] | 238 | * @return Array(keyName => Array('implemented' => Boolean, 'name' => String)) |
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[4686] | 239 | */ |
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| 240 | static public function getTagList($options=Array()) |
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| 241 | { |
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| 242 | $default=Array( |
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| 243 | 'filter' => self::TAGFILTER_ALL, |
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| 244 | 'optimizeIptcDateTime' => false, |
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| 245 | 'exif' => true, |
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| 246 | 'iptc' => true, |
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| 247 | 'xmp' => true, |
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[4998] | 248 | 'maker' => true, |
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| 249 | 'magic' => true, |
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[7511] | 250 | 'com' => true |
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[4686] | 251 | ); |
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| 252 | |
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| 253 | foreach($default as $key => $val) |
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| 254 | { |
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| 255 | if(array_key_exists($key, $options)) |
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| 256 | $default[$key]=$options[$key]; |
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| 257 | } |
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| 258 | |
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| 259 | $list=Array(); |
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| 260 | $returned=Array(); |
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| 261 | |
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| 262 | if($default['exif']) |
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| 263 | { |
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| 264 | $list[]="exif"; |
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| 265 | $list[]="gps"; |
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| 266 | } |
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| 267 | |
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| 268 | if($default['maker']) |
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| 269 | { |
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| 270 | $list[]=MAKER_PENTAX; |
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[4931] | 271 | $list[]=MAKER_NIKON; |
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[4933] | 272 | $list[]=MAKER_CANON; |
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[4686] | 273 | } |
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| 274 | |
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| 275 | if($default['iptc']) |
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| 276 | $list[]="iptc"; |
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| 277 | |
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| 278 | if($default['xmp']) |
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| 279 | $list[]="xmp"; |
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| 280 | |
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[4998] | 281 | if($default['magic']) |
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| 282 | $list[]="magic"; |
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| 283 | |
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[7511] | 284 | if($default['com']) |
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| 285 | $list[]="com"; |
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| 286 | |
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[4686] | 287 | foreach($list as $val) |
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| 288 | { |
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| 289 | unset($tmp); |
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| 290 | |
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| 291 | switch($val) |
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| 292 | { |
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| 293 | case "exif": |
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| 294 | $tmp=new IfdTags(); |
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[6729] | 295 | $schema=Schemas::EXIF; |
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[4686] | 296 | break; |
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| 297 | case "gps": |
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| 298 | $tmp=new GpsTags(); |
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[6729] | 299 | $schema=Schemas::EXIF_GPS; |
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[4686] | 300 | break; |
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| 301 | case "iptc": |
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| 302 | $tmp=new IptcTags(); |
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[6729] | 303 | $schema=Schemas::IPTC; |
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[4686] | 304 | break; |
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| 305 | case "xmp": |
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| 306 | $tmp=new XmpTags(); |
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[6729] | 307 | $schema=Schemas::XMP; |
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[4686] | 308 | break; |
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[4998] | 309 | case "magic": |
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| 310 | $tmp=new MagicTags(); |
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[6729] | 311 | $schema=Schemas::MAGIC; |
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[4998] | 312 | break; |
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[7511] | 313 | case "com": |
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| 314 | $tmp=new ComTags(); |
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| 315 | $schema=Schemas::COM; |
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| 316 | break; |
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[4686] | 317 | case MAKER_PENTAX: |
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[4904] | 318 | include_once(JPEG_METADATA_DIR."TagDefinitions/PentaxTags.class.php"); |
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[4686] | 319 | $tmp=new PentaxTags(); |
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[6729] | 320 | $schema=Schemas::EXIF_MAKER.'.'.MAKER_PENTAX; |
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[4686] | 321 | break; |
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[4931] | 322 | case MAKER_NIKON: |
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| 323 | include_once(JPEG_METADATA_DIR."TagDefinitions/NikonTags.class.php"); |
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| 324 | $tmp=new NikonTags(); |
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[6729] | 325 | $schema=Schemas::EXIF_MAKER.'.'.MAKER_NIKON; |
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[4931] | 326 | break; |
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[4933] | 327 | case MAKER_CANON: |
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| 328 | include_once(JPEG_METADATA_DIR."TagDefinitions/CanonTags.class.php"); |
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| 329 | $tmp=new CanonTags(); |
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[6729] | 330 | $schema=Schemas::EXIF_MAKER.'.'.MAKER_CANON; |
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[4933] | 331 | break; |
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[4686] | 332 | default: |
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| 333 | $tmp=null; |
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| 334 | $schema="?"; |
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| 335 | break; |
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| 336 | } |
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| 337 | |
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| 338 | if(!is_null($tmp)) |
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| 339 | foreach($tmp->getTags() as $key => $tag) |
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| 340 | { |
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| 341 | if(self::filter(true, $tag['implemented'], $default['filter'])) |
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| 342 | { |
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| 343 | if(array_key_exists('tagName', $tag)) |
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| 344 | $name=$tag['tagName']; |
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| 345 | else |
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| 346 | $name=$key; |
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| 347 | |
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[6729] | 348 | if(array_key_exists('schema', $tag) and $val==Schemas::EXIF) |
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[4686] | 349 | $subSchema=".".$tag['schema']; |
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| 350 | else |
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| 351 | $subSchema=""; |
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| 352 | |
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[6729] | 353 | if($val==Schemas::XMP) |
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[4686] | 354 | $keyName=$schema.$subSchema.".".$key; |
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| 355 | else |
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| 356 | $keyName=$schema.$subSchema.".".$name; |
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| 357 | $returned[$keyName]=Array( |
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| 358 | 'implemented' => $tag['implemented'], |
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[4904] | 359 | 'translatable' => $tag['translatable'], |
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[4686] | 360 | 'name' => $name |
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| 361 | ); |
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| 362 | } |
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| 363 | } |
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| 364 | } |
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| 365 | |
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[4998] | 366 | ksort($returned); |
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| 367 | |
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[4686] | 368 | return($returned); |
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| 369 | } |
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| 370 | |
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| 371 | |
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| 372 | /** |
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| 373 | * the filter function is used by the classe to determine if a tag is |
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| 374 | * filtered or not |
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| 375 | * |
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| 376 | * @Param Boolean $known |
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| 377 | * @Param Boolean $implemented |
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| 378 | * @Param Integer $filter |
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| 379 | * |
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| 380 | */ |
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| 381 | static public function filter($known, $implemented, $filter) |
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| 382 | { |
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| 383 | return(($known and (($filter & self::TAGFILTER_KNOWN) == self::TAGFILTER_KNOWN )) or |
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| 384 | ($implemented and (($filter & self::TAGFILTER_IMPLEMENTED) == self::TAGFILTER_IMPLEMENTED ))); |
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| 385 | } |
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| 386 | |
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| 387 | /** |
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| 388 | * the constructor need an optional filename and options |
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| 389 | * |
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| 390 | * if no filename is given, you can use the "load" function after the object |
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| 391 | * is instancied |
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| 392 | * |
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| 393 | * if no options are given, the class use the default values |
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| 394 | * |
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| 395 | * ---------------------+--------------------------------------------------- |
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| 396 | * key | descriptions/values |
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| 397 | * ---------------------+--------------------------------------------------- |
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| 398 | * filter | Integer |
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| 399 | * | This options is used to filter implemented tag |
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| 400 | * | JpegMetaData::TAGFILTER_ALL |
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| 401 | * | => returns all the tags |
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| 402 | * | JpegMetaData::TAGFILTER_IMPLEMENTED |
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| 403 | * | => returns only the implemented tags, not |
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| 404 | * | implemented tag are excluded |
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| 405 | * | JpegMetaData::TAGFILTER_KNOWN |
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| 406 | * | => returns only the known tags (implemented or |
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| 407 | * | not), unknown tag are excluded |
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| 408 | * | |
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| 409 | * optimizeIptcDateTime | Boolean |
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| 410 | * | IPTC Date/Time are separated into 2 tags |
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| 411 | * | if this option is set to true, only dates tags are |
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| 412 | * | returned (in this case, time is included is the |
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| 413 | * | date) |
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| 414 | * | |
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| 415 | * exif | Boolean |
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| 416 | * iptc | If set to true, the function returns all the tags |
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| 417 | * xmp | known for the specified type tag |
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[4998] | 418 | * magic | the exif parameter include the maker tags |
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[4686] | 419 | * | |
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| 420 | * ---------------------+--------------------------------------------------- |
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| 421 | * |
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| 422 | * @Param String $file (optional) |
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| 423 | * @Param Array $options (optional) |
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| 424 | * |
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| 425 | */ |
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| 426 | function __construct($file = "", $options = Array()) |
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| 427 | { |
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| 428 | $this->load($file, $options); |
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| 429 | } |
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| 430 | |
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| 431 | function __destruct() |
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| 432 | { |
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| 433 | $this->unsetAll(); |
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| 434 | } |
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| 435 | |
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| 436 | /** |
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| 437 | * load a file |
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| 438 | * |
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| 439 | * options values are the same than the constructor's options |
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| 440 | * |
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| 441 | * @Param String $file |
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| 442 | * @Param Array $options (optional) |
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| 443 | * |
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| 444 | */ |
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| 445 | public function load($file, $options = Array()) |
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| 446 | { |
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[4904] | 447 | $this->unsetAll(); |
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| 448 | |
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[4686] | 449 | $this->initializeOptions($options); |
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| 450 | $this->tags = Array(); |
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| 451 | $this->jpeg = new JpegReader($file); |
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| 452 | |
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| 453 | if($this->jpeg->isLoaded() and $this->jpeg->isValid()) |
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| 454 | { |
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| 455 | foreach($this->jpeg->getAppMarkerSegments() as $key => $appMarkerSegment) |
---|
| 456 | { |
---|
| 457 | if($appMarkerSegment->dataLoaded()) |
---|
| 458 | { |
---|
| 459 | $data=$appMarkerSegment->getData(); |
---|
| 460 | |
---|
| 461 | if($data instanceof TiffReader) |
---|
| 462 | { |
---|
| 463 | /* |
---|
| 464 | * Load Exifs tags from Tiff block |
---|
| 465 | */ |
---|
[6729] | 466 | if($data->getNbIFDs()>0 and |
---|
[7399] | 467 | ($this->options['magic'] or $this->options['exif'])) |
---|
[4686] | 468 | { |
---|
[6729] | 469 | $this->loadIfdTags($data->getIFD(0), Schemas::EXIF_TIFF); |
---|
[4686] | 470 | } |
---|
| 471 | } |
---|
| 472 | elseif($data instanceof XmpReader) |
---|
| 473 | { |
---|
| 474 | /* |
---|
| 475 | * Load Xmp tags from Xmp block |
---|
| 476 | */ |
---|
[6729] | 477 | if($this->options['magic'] or $this->options['xmp']) |
---|
| 478 | { |
---|
| 479 | $this->loadTags($data->getTags(), Schemas::XMP); |
---|
| 480 | } |
---|
[4686] | 481 | } |
---|
| 482 | elseif($data instanceof IptcReader) |
---|
| 483 | { |
---|
| 484 | /* |
---|
| 485 | * Load IPTC tags from IPTC block |
---|
| 486 | */ |
---|
| 487 | if($this->options['optimizeIptcDateTime']) |
---|
| 488 | $data->optimizeDateTime(); |
---|
| 489 | |
---|
[6729] | 490 | if($this->options['magic'] or $this->options['iptc']) |
---|
| 491 | { |
---|
| 492 | $this->loadTags($data->getTags(), Schemas::IPTC); |
---|
| 493 | } |
---|
[4686] | 494 | } |
---|
[7511] | 495 | elseif($data instanceof ComReader) |
---|
| 496 | { |
---|
| 497 | $this->loadTags($data->getTags(), Schemas::COM); |
---|
| 498 | } |
---|
[4686] | 499 | } |
---|
| 500 | } |
---|
[4998] | 501 | |
---|
| 502 | if($this->options['magic']) |
---|
| 503 | { |
---|
| 504 | $this->processMagicTags(); |
---|
| 505 | } |
---|
| 506 | |
---|
[6729] | 507 | // clean all unwanted metadata |
---|
| 508 | foreach($this->tags as $key => $tag) |
---|
| 509 | { |
---|
[6889] | 510 | if(isset($this->options[$tag->getSchema()]) and !$this->options[$tag->getSchema()]) unset($this->tags[$key]); |
---|
[6729] | 511 | } |
---|
| 512 | |
---|
[4998] | 513 | ksort($this->tags); |
---|
[4686] | 514 | } |
---|
| 515 | } |
---|
| 516 | |
---|
| 517 | /** |
---|
| 518 | * This function returns an array of tags found in the loaded file |
---|
| 519 | * |
---|
| 520 | * It's possible to made a second selection to filter items |
---|
| 521 | * |
---|
| 522 | * ---------------------+--------------------------------------------------- |
---|
| 523 | * key | descriptions/values |
---|
| 524 | * ---------------------+--------------------------------------------------- |
---|
| 525 | * tagFilter | Integer |
---|
| 526 | * | This options is used to filter implemented tag |
---|
| 527 | * | JpegMetaData::TAGFILTER_ALL |
---|
| 528 | * | => returns all the tags |
---|
| 529 | * | JpegMetaData::TAGFILTER_IMPLEMENTED |
---|
| 530 | * | => returns only the implemented tags, not |
---|
| 531 | * | implemented tag are excluded |
---|
| 532 | * | JpegMetaData::TAGFILTER_KNOWN |
---|
| 533 | * | => returns only the known tags (implemented or |
---|
| 534 | * | not), unknown tag are excluded |
---|
| 535 | * | |
---|
| 536 | * ---------------------+--------------------------------------------------- |
---|
| 537 | * |
---|
| 538 | * Note, the filter is applied on loaded tags. If a filter was applied when |
---|
| 539 | * the file was loaded, you cannot expand the tag list, only reduce |
---|
| 540 | * example : |
---|
| 541 | * $jpegmd = new JpegMetadata($file, Array('filter' => JpegMetaData::TAGFILTER_IMPLEMENTED)); |
---|
| 542 | * => the unknown tag are not loaded |
---|
| 543 | * $jpegmd->getTags(JpegMetaData::TAGFILTER_ALL) |
---|
| 544 | * => unknown tag will not be restitued because they are not loaded... |
---|
| 545 | * |
---|
| 546 | * the function returns an array of Tag. |
---|
| 547 | * |
---|
| 548 | * |
---|
| 549 | * ===========> See the Tag.class.php to know all about a tag <============= |
---|
| 550 | * |
---|
| 551 | * @Param Integer $tagFilter (optional) |
---|
| 552 | * |
---|
| 553 | */ |
---|
| 554 | public function getTags($tagFilter = self::TAGFILTER_ALL) |
---|
| 555 | { |
---|
| 556 | $returned=Array(); |
---|
| 557 | foreach($this->tags as $key => $val) |
---|
| 558 | { |
---|
[4698] | 559 | if(self::filter($val->isKnown(), $val->isImplemented(), $tagFilter)) |
---|
[4686] | 560 | { |
---|
| 561 | $returned[$key]=$val; |
---|
| 562 | } |
---|
| 563 | } |
---|
| 564 | return($returned); |
---|
| 565 | } |
---|
| 566 | |
---|
[6889] | 567 | |
---|
[4686] | 568 | /** |
---|
[6889] | 569 | * This function returns the tag object for the given tag name |
---|
| 570 | * |
---|
| 571 | * @param String $key : the tag name (ie: "exif.exif.ApertureValue") |
---|
| 572 | * @return Tag : the tag object, null if the tag doesn't exist |
---|
| 573 | */ |
---|
| 574 | public function getTag($key) |
---|
| 575 | { |
---|
| 576 | if(array_key_exists($key, $this->tags)) |
---|
| 577 | { |
---|
| 578 | return($this->tags[$key]); |
---|
| 579 | } |
---|
| 580 | return(null); |
---|
| 581 | } |
---|
| 582 | |
---|
| 583 | /** |
---|
[4686] | 584 | * initialize the options... |
---|
| 585 | * |
---|
| 586 | * @Param Array $options (optional) |
---|
| 587 | * |
---|
| 588 | */ |
---|
| 589 | private function initializeOptions($options=Array()) |
---|
| 590 | { |
---|
| 591 | $this->options = Array( |
---|
| 592 | 'filter' => self::TAGFILTER_ALL, |
---|
| 593 | 'optimizeIptcDateTime' => false, |
---|
[4998] | 594 | 'exif' => true, |
---|
| 595 | 'iptc' => true, |
---|
| 596 | 'xmp' => true, |
---|
[7511] | 597 | 'magic' => true, |
---|
| 598 | 'com' => true |
---|
[4686] | 599 | ); |
---|
| 600 | |
---|
| 601 | foreach($this->options as $key => $val) |
---|
| 602 | { |
---|
| 603 | if(array_key_exists($key, $options)) |
---|
| 604 | $this->options[$key]=$options[$key]; |
---|
| 605 | } |
---|
| 606 | } |
---|
| 607 | |
---|
| 608 | /** |
---|
| 609 | * load tags from an IFD structure |
---|
| 610 | * |
---|
| 611 | * see Tiff.class.php and IfdReader.class.php for more informations |
---|
| 612 | * |
---|
| 613 | * @Param IfdReader $ifd |
---|
| 614 | * @Param String $exifKey |
---|
| 615 | * |
---|
| 616 | */ |
---|
| 617 | private function loadIfdTags($ifd, $exifKey) |
---|
| 618 | { |
---|
| 619 | foreach($ifd->getTags() as $key => $tag) |
---|
| 620 | { |
---|
[4933] | 621 | if((self::filter($tag->getTag()->isKnown(), $tag->getTag()->isImplemented(), $this->options['filter'])) or |
---|
| 622 | ($tag->getTag()->getName()=='Exif IFD Pointer' or |
---|
| 623 | $tag->getTag()->getName()=='MakerNote' or |
---|
| 624 | $tag->getTag()->getName()=='GPS IFD Pointer')) |
---|
[4686] | 625 | { |
---|
[4935] | 626 | /* |
---|
| 627 | * only tag responding to the filter are selected |
---|
| 628 | * note the tags 'Exif IFD Pointer', 'MakerNote' & 'GPS IFD Pointer' |
---|
| 629 | * are not declared as implemented (otherwise they are visible with |
---|
| 630 | * the static 'getTagList' function) but must be selected even if |
---|
| 631 | * filter says "implemented only" |
---|
| 632 | */ |
---|
[4686] | 633 | if($tag->getTag()->getLabel() instanceof IfdReader) |
---|
| 634 | { |
---|
| 635 | switch($tag->getTag()->getName()) |
---|
| 636 | { |
---|
| 637 | case 'Exif IFD Pointer': |
---|
[6729] | 638 | $exifKey2=Schemas::EXIF_EXIF; |
---|
[4686] | 639 | break; |
---|
| 640 | case 'MakerNote': |
---|
[6729] | 641 | $exifKey2=Schemas::EXIF_MAKER.".".$tag->getTag()->getLabel()->getMaker(); |
---|
[4686] | 642 | break; |
---|
| 643 | case 'GPS IFD Pointer': |
---|
[6729] | 644 | $exifKey2=Schemas::EXIF_GPS; |
---|
[4686] | 645 | break; |
---|
| 646 | default: |
---|
| 647 | $exifKey2=$exifKey; |
---|
| 648 | break; |
---|
| 649 | } |
---|
| 650 | $this->loadIfdTags($tag->getTag()->getLabel(), $exifKey2); |
---|
| 651 | } |
---|
| 652 | else |
---|
| 653 | { |
---|
| 654 | $this->tags[$exifKey.".".$tag->getTag()->getName()]=$tag->getTag(); |
---|
| 655 | } |
---|
| 656 | } |
---|
| 657 | } |
---|
| 658 | } |
---|
| 659 | |
---|
| 660 | /** |
---|
| 661 | * Used to load tags from an IPTc or XMP structure |
---|
| 662 | * |
---|
| 663 | * see IptcReader.class.php and XmpReader.class.php |
---|
| 664 | * |
---|
| 665 | * @Param Tag[] $ifd |
---|
| 666 | * @Param String $tagKey |
---|
| 667 | * |
---|
| 668 | */ |
---|
| 669 | private function loadTags($tags, $tagKey) |
---|
| 670 | { |
---|
| 671 | foreach($tags as $key => $tag) |
---|
| 672 | { |
---|
[4698] | 673 | if(self::filter($tag->isKnown(), $tag->isImplemented(), $this->options['filter'])) |
---|
[4686] | 674 | { |
---|
| 675 | $this->tags[$tagKey.".".$tag->getName()]=$tag; |
---|
| 676 | } |
---|
| 677 | } |
---|
| 678 | } |
---|
| 679 | |
---|
[4998] | 680 | /** |
---|
[6986] | 681 | * MagicTags are built with this function |
---|
[4998] | 682 | */ |
---|
[5789] | 683 | protected function processMagicTags() |
---|
[4998] | 684 | { |
---|
| 685 | $magicTags=new MagicTags(); |
---|
| 686 | |
---|
| 687 | foreach($magicTags->getTags() as $key => $val) |
---|
| 688 | { |
---|
| 689 | $tag=new Tag($key,0,$key); |
---|
| 690 | |
---|
| 691 | for($i=0; $i<count($val['tagValues']); $i++) |
---|
| 692 | { |
---|
| 693 | $found=true; |
---|
| 694 | preg_match_all('/{([a-z0-9:\.\s\/]*)(\[.*\])?}/i', $val['tagValues'][$i], $returned, PREG_PATTERN_ORDER); |
---|
| 695 | foreach($returned[1] as $testKey) |
---|
| 696 | { |
---|
[7511] | 697 | $found=$found & (array_key_exists($testKey, $this->tags) and $this->tags[$testKey]->getValue()!=''); |
---|
[4998] | 698 | } |
---|
| 699 | if(count($returned[1])==0) $found=false; |
---|
| 700 | |
---|
| 701 | if($found) |
---|
| 702 | { |
---|
[6986] | 703 | $returned=trim( |
---|
| 704 | preg_replace_callback( |
---|
[4998] | 705 | '/{([a-z0-9:\.\s\/\[\]]*)}/i', |
---|
| 706 | Array(&$this, "processMagicTagsCB"), |
---|
| 707 | $val['tagValues'][$i] |
---|
[6986] | 708 | ) |
---|
| 709 | ); |
---|
[4998] | 710 | |
---|
[5789] | 711 | $returned=$this->processSpecialMagicTag($key, $returned); |
---|
| 712 | |
---|
[4998] | 713 | $tag->setValue($returned); |
---|
| 714 | $tag->setLabel($returned); |
---|
| 715 | $tag->setKnown(true); |
---|
| 716 | $tag->setImplemented($val['implemented']); |
---|
| 717 | $tag->setTranslatable($val['translatable']); |
---|
[6729] | 718 | $tag->setSchema(Schemas::MAGIC); |
---|
[4998] | 719 | |
---|
| 720 | $i=count($val['tagValues']); |
---|
| 721 | } |
---|
| 722 | } |
---|
| 723 | |
---|
| 724 | if($tag->isImplemented() and $found) |
---|
| 725 | { |
---|
| 726 | $this->tags["magic.".$key]=$tag; |
---|
| 727 | } |
---|
| 728 | |
---|
| 729 | unset($tag); |
---|
| 730 | } |
---|
| 731 | unset($magicTags); |
---|
| 732 | } |
---|
| 733 | |
---|
| 734 | /** |
---|
| 735 | * this function is called by the processMagicTags to replace tagId by the |
---|
| 736 | * tag values |
---|
| 737 | * |
---|
| 738 | * @param Array $matches : array[1] = the tagId |
---|
| 739 | * @return String : the tag value |
---|
| 740 | */ |
---|
[5789] | 741 | protected function processMagicTagsCB($matches) |
---|
[4998] | 742 | { |
---|
| 743 | $label=""; |
---|
| 744 | preg_match_all('/([a-z0-9:\.\s\/]*)\[(.*)\]/i', $matches[1], $result, PREG_PATTERN_ORDER); |
---|
| 745 | if(count($result[0])>0) |
---|
| 746 | { |
---|
| 747 | |
---|
| 748 | if(array_key_exists($result[1][0], $this->tags)) |
---|
| 749 | { |
---|
| 750 | $tag=$this->tags[$result[1][0]]->getLabel(); |
---|
| 751 | |
---|
| 752 | preg_match_all('/([a-z0-9:\.\s\/]*)\[(.*)\]/i', $result[2][0], $result2, PREG_PATTERN_ORDER); |
---|
| 753 | |
---|
| 754 | if(count($result2[0])>0) |
---|
| 755 | { |
---|
| 756 | if(array_key_exists($result2[2][0], $tag[$result2[1][0]] )) |
---|
| 757 | $label=$tag[$result2[1][0]][$result2[2][0]]; |
---|
| 758 | } |
---|
| 759 | else |
---|
| 760 | { |
---|
| 761 | if(array_key_exists($result[2][0], $tag)) |
---|
| 762 | $label=$tag[$result[2][0]]; |
---|
| 763 | } |
---|
| 764 | } |
---|
| 765 | } |
---|
| 766 | else |
---|
| 767 | { |
---|
| 768 | if(array_key_exists($matches[1], $this->tags)) |
---|
| 769 | { |
---|
| 770 | $label=$this->tags[$matches[1]]->getLabel(); |
---|
| 771 | } |
---|
| 772 | } |
---|
| 773 | if($label instanceof DateTime) |
---|
| 774 | return($label->format("Y-m-d H:i:s")); |
---|
| 775 | |
---|
| 776 | $label=XmpTags::getAltValue($label, L10n::getLanguage()); |
---|
| 777 | |
---|
| 778 | if(is_array($label)) |
---|
[6986] | 779 | { |
---|
[4998] | 780 | return(implode(", ", $label)); |
---|
[6986] | 781 | } |
---|
[4998] | 782 | |
---|
| 783 | return(trim($label)); |
---|
| 784 | } |
---|
| 785 | |
---|
[5789] | 786 | /** |
---|
| 787 | * |
---|
| 788 | * |
---|
| 789 | */ |
---|
| 790 | protected function processSpecialMagicTag($key, $value) |
---|
| 791 | { |
---|
| 792 | switch($key) |
---|
| 793 | { |
---|
| 794 | case "GPS.LatitudeNum": |
---|
| 795 | case "GPS.LongitudeNum": |
---|
| 796 | preg_match_all('/(\d{1,3})°\s*(\d{1,2})\'(?:\s*(\d+(?:\.\d+)?)")?[\s\|\.]*(N|S|E|W)/i', $value, $result); |
---|
| 797 | $num=(float)$result[1][0] + ((float) $result[2][0])/60; |
---|
| 798 | if($result[3][0]!="") $num+= ((float) $result[3][0])/3600; |
---|
| 799 | if($result[4][0]=="W" or $result[4][0]=="S") $num=-$num; |
---|
| 800 | return($num); |
---|
[7511] | 801 | case "Author.Keywords": |
---|
[7519] | 802 | $list=array_flip(array_flip(explode(',', str_replace(array('/', '|', ','), ',', $value)))); |
---|
[7511] | 803 | sort($list); |
---|
[7519] | 804 | $tmp=array(); |
---|
| 805 | foreach($list as $key=>$val) |
---|
| 806 | { |
---|
| 807 | if(trim($val)!='') $tmp[]=trim($val); |
---|
| 808 | } |
---|
| 809 | return($tmp); |
---|
[7511] | 810 | break; |
---|
[5789] | 811 | default: |
---|
| 812 | return($value); |
---|
| 813 | } |
---|
| 814 | } |
---|
[4998] | 815 | |
---|
| 816 | |
---|
| 817 | /** |
---|
| 818 | * used by the destructor to clean variables |
---|
| 819 | */ |
---|
[4686] | 820 | private function unsetAll() |
---|
| 821 | { |
---|
| 822 | unset($this->tags); |
---|
| 823 | unset($this->jpeg); |
---|
[4904] | 824 | unset($this->options); |
---|
[4686] | 825 | } |
---|
| 826 | |
---|
| 827 | |
---|
| 828 | } // class JpegMetaData |
---|
| 829 | |
---|
| 830 | ?> |
---|