[4686] | 1 | <?php |
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| 2 | /* |
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| 3 | * --:: JPEG MetaDatas ::------------------------------------------------------- |
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| 4 | * |
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| 5 | * Author : Grum |
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| 6 | * email : grum at piwigo.org |
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| 7 | * website : http://photos.grum.fr |
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| 8 | * |
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| 9 | * << May the Little SpaceFrog be with you ! >> |
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| 10 | * |
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| 11 | * |
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| 12 | * +-----------------------------------------------------------------------+ |
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| 13 | * | JpegMetaData - a PHP based Jpeg Metadata manager | |
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| 14 | * +-----------------------------------------------------------------------+ |
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| 15 | * | Copyright(C) 2010 Grum - http://www.grum.fr | |
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| 16 | * +-----------------------------------------------------------------------+ |
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| 17 | * | This program is free software; you can redistribute it and/or modify | |
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| 18 | * | it under the terms of the GNU General Public License as published by | |
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| 19 | * | the Free Software Foundation | |
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| 20 | * | | |
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| 21 | * | This program is distributed in the hope that it will be useful, but | |
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| 22 | * | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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| 23 | * | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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| 24 | * | General Public License for more details. | |
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| 25 | * | | |
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| 26 | * | You should have received a copy of the GNU General Public License | |
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| 27 | * | along with this program; if not, write to the Free Software | |
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| 28 | * | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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| 29 | * | USA. | |
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| 30 | * +-----------------------------------------------------------------------+ |
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| 31 | * |
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| 32 | * |
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| 33 | * ----------------------------------------------------------------------------- |
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| 34 | * |
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[4698] | 35 | * The exif tag 0x927C "MakerNote" is a tag used by the camera maker to manage |
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| 36 | * their own data. |
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[4686] | 37 | * |
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[4698] | 38 | * In most of case, this tags gives an offset to an extra data block. |
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| 39 | * And in most of case, this data block is a sub-IFD block |
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| 40 | * |
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| 41 | * The MakerNotesReader is a generic class dedicated to read tags from the maker |
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| 42 | * note sub IFD structure |
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| 43 | * |
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| 44 | * |
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[4686] | 45 | * ======> See IfdReader.class.php to know more about an IFD structure <======== |
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| 46 | * |
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| 47 | * ----------------------------------------------------------------------------- |
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| 48 | * |
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| 49 | * .. Notes .. |
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| 50 | * |
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| 51 | * |
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| 52 | * The MakerNotesReader class is derived from the IfdReader class. |
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| 53 | * |
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| 54 | * ========> See IfdReader.class.php to know more about common methods <======== |
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| 55 | * |
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| 56 | * |
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| 57 | * Derived classes : |
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| 58 | * - PentaxReader (for Pentax exif tags) |
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| 59 | * |
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| 60 | * |
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| 61 | * This class provides theses public functions : |
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| 62 | * - getMaker |
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| 63 | * |
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| 64 | * |
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| 65 | * ----------------------------------------------------------------------------- |
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| 66 | */ |
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| 67 | |
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| 68 | require_once(JPEG_METADATA_DIR."Common/ConvertData.class.php"); |
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| 69 | require_once(JPEG_METADATA_DIR."Common/MakerNotesSignatures.class.php"); |
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| 70 | require_once(JPEG_METADATA_DIR."Common/Tag.class.php"); |
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| 71 | require_once(JPEG_METADATA_DIR."Readers/IfdReader.class.php"); |
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| 72 | |
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| 73 | abstract class MakerNotesReader extends IfdReader |
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| 74 | { |
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| 75 | protected $maker = "UNKNOWN"; |
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| 76 | |
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[4904] | 77 | function __destruct() |
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| 78 | { |
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| 79 | unset($this->maker); |
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| 80 | parent::__destruct(); |
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| 81 | } |
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| 82 | |
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[4686] | 83 | /** |
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| 84 | * this function return the name of the camera maker |
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| 85 | * |
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| 86 | * @return String |
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| 87 | */ |
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| 88 | public function getMaker() |
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| 89 | { |
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| 90 | return($this->maker); |
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| 91 | } |
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| 92 | |
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| 93 | protected function skipHeader($headerSize=0) |
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| 94 | { |
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| 95 | parent::skipHeader($headerSize); |
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| 96 | } |
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| 97 | |
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| 98 | } |
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| 99 | |
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| 100 | |
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| 101 | |
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| 102 | |
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| 103 | ?> |
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