| 1 | <?php |
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| 2 | |
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| 3 | /****************************************************************************** |
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| 4 | * |
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| 5 | * Filename: kyocera.php |
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| 6 | * |
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| 7 | * Description: Kyocera Makernote Parser |
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| 8 | * Provides functions to decode an Kyocera EXIF makernote and to interpret |
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| 9 | * the resulting array into html. Includes Kyocera's Contax brand |
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| 10 | * |
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| 11 | * Kyocera Makernote Format: |
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| 12 | * |
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| 13 | * Field Size Description |
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| 14 | * ---------------------------------------------------------------- |
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| 15 | * Header 22 Bytes "KYOCERA \x00\x00\x00" |
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| 16 | * IFD Data Variable NON-Standard IFD Data using Kyocera Tags |
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| 17 | * IFD has no Next-IFD pointer at end of IFD, |
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| 18 | * and Offsets are relative to the start |
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| 19 | * of the current IFD tag, not the TIFF header |
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| 20 | * ---------------------------------------------------------------- |
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| 21 | * |
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| 22 | * |
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| 23 | * |
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| 24 | * Author: Evan Hunter |
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| 25 | * |
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| 26 | * Date: 30/7/2004 |
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| 27 | * |
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| 28 | * Project: JPEG Metadata |
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| 29 | * |
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| 30 | * Revision: 1.00 |
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| 31 | * |
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| 32 | * URL: http://electronics.ozhiker.com |
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| 33 | * |
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| 34 | * Copyright: Copyright " . $auteur . " 2004 |
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| 35 | * This file may be used freely for non-commercial purposes.For |
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| 36 | * commercial uses please contact the author: evan@ozhiker.com |
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| 37 | * |
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| 38 | ******************************************************************************/ |
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| 39 | |
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| 40 | |
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| 41 | // Add the parser and interpreter functions to the list of Makernote parsers and interpreters. |
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| 42 | |
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| 43 | $GLOBALS['Makernote_Function_Array']['Read_Makernote_Tag'][] = "get_Kyocera_Makernote"; |
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| 44 | $GLOBALS['Makernote_Function_Array']['get_Makernote_Text_Value'][] = "get_Kyocera_Text_Value"; |
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| 45 | $GLOBALS['Makernote_Function_Array']['Interpret_Makernote_to_HTML'][] = "get_Kyocera_Makernote_Html"; |
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| 46 | |
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| 47 | |
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| 48 | |
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| 49 | |
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| 50 | /****************************************************************************** |
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| 51 | * |
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| 52 | * Function: get_Kyocera_Makernote |
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| 53 | * |
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| 54 | * Description: Decodes the Makernote tag and returns the new tag with the decoded |
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| 55 | * information attached. Returns false if this is not a makernote |
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| 56 | * that can be processed with this script |
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| 57 | * |
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| 58 | * Parameters: Makernote_Tag - the element of an EXIF array containing the |
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| 59 | * makernote, as returned from get_EXIF_JPEG |
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| 60 | * EXIF_Array - the entire EXIF array containing the |
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| 61 | * makernote, as returned from get_EXIF_JPEG, in |
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| 62 | * case more information is required for decoding |
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| 63 | * filehnd - an open file handle for the file containing the |
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| 64 | * makernote - does not have to be positioned at the |
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| 65 | * start of the makernote |
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| 66 | * Make_Field - The contents of the EXIF Make field, to aid |
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| 67 | * determining whether this script can decode |
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| 68 | * the makernote |
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| 69 | * |
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| 70 | * |
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| 71 | * Returns: Makernote_Tag - the Makernote_Tag from the parameters, but |
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| 72 | * modified to contain the decoded information |
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| 73 | * FALSE - If this script could not decode the makernote, or if |
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| 74 | * an error occured in decoding |
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| 75 | * |
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| 76 | ******************************************************************************/ |
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| 77 | |
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| 78 | function get_Kyocera_Makernote( $Makernote_Tag, $EXIF_Array, $filehnd, $Make_Field ) |
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| 79 | { |
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| 80 | |
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| 81 | // Check if the Make Field contains the word Contax or Kyocera |
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| 82 | if ( ( stristr( $Make_Field, "Contax" ) === FALSE ) && |
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| 83 | ( stristr( $Make_Field, "Kyocera" ) === FALSE ) ) |
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| 84 | { |
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| 85 | // Kyocera or Contax not found in maker field - abort |
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| 86 | return FALSE; |
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| 87 | } |
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| 88 | |
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| 89 | |
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| 90 | // Check if the header exists at the start of the Makernote |
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| 91 | if ( substr( $Makernote_Tag['Data'], 0, 22 ) != "KYOCERA \x00\x00\x00" ) |
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| 92 | { |
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| 93 | // This isn't a Kyocera Makernote, abort |
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| 94 | return FALSE ; |
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| 95 | } |
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| 96 | |
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| 97 | |
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| 98 | // Seek to the start of the IFD |
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| 99 | fseek($filehnd, $Makernote_Tag['Tiff Offset'] + $Makernote_Tag['Offset'] + 22 ); |
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| 100 | |
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| 101 | // Read the IFD(s) into an array |
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| 102 | $Makernote_Tag['Decoded Data'] = read_Multiple_IFDs( $filehnd, $Makernote_Tag['Tiff Offset'], $Makernote_Tag['ByteAlign'], "Kyocera", True, False ); |
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| 103 | |
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| 104 | // Save some information into the Tag element to aid interpretation |
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| 105 | $Makernote_Tag['Decoded'] = TRUE; |
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| 106 | $Makernote_Tag['Makernote Type'] = "Kyocera"; |
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| 107 | $Makernote_Tag['Makernote Tags'] = "Kyocera"; |
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| 108 | |
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| 109 | |
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| 110 | // Return the new tag |
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| 111 | return $Makernote_Tag; |
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| 112 | } |
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| 113 | |
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| 114 | /****************************************************************************** |
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| 115 | * End of Function: get_Kyocera_Makernote |
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| 116 | ******************************************************************************/ |
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| 117 | |
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| 118 | |
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| 119 | |
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| 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 | * Function: get_Kyocera_Text_Value |
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| 126 | * |
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| 127 | * Description: Provides a text value for any tag marked as special for makernotes |
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| 128 | * that this script can decode. Returns false if this is not a makernote |
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| 129 | * that can be processed with this script |
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| 130 | * |
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| 131 | * Parameters: Exif_Tag - the element of an the Makernote array containing the |
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| 132 | * tag in question, as returned from get_Kyocera_Makernote |
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| 133 | * Tag_Definitions_Name - The name of the Tag Definitions group |
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| 134 | * within the global array IFD_Tag_Definitions |
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| 135 | * |
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| 136 | * |
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| 137 | * Returns: output - the text value for the tag |
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| 138 | * FALSE - If this script could not decode the makernote, or if |
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| 139 | * an error occured in decoding |
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| 140 | * |
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| 141 | ******************************************************************************/ |
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| 142 | |
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| 143 | function get_Kyocera_Text_Value( $Exif_Tag, $Tag_Definitions_Name ) |
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| 144 | { |
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| 145 | // Check that this tag uses Kyocera tags, otherwise it can't be interpreted here |
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| 146 | if ( $Tag_Definitions_Name == "Kyocera" ) |
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| 147 | { |
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| 148 | // No Special Kyocera tags so far |
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| 149 | return FALSE; |
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| 150 | } |
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| 151 | |
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| 152 | return FALSE; |
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| 153 | |
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| 154 | } |
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| 155 | |
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| 156 | /****************************************************************************** |
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| 157 | * End of Function: get_Kyocera_Text_Value |
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| 158 | ******************************************************************************/ |
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| 159 | |
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| 160 | |
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| 161 | |
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| 162 | |
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| 163 | |
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| 164 | |
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| 165 | |
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| 166 | |
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| 167 | /****************************************************************************** |
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| 168 | * |
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| 169 | * Function: get_Kyocera_Makernote_Html |
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| 170 | * |
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| 171 | * Description: Attempts to interpret a makernote into html. Returns false if |
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| 172 | * it is not a makernote that can be processed with this script |
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| 173 | * |
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| 174 | * Parameters: Makernote_Tag - the element of an EXIF array containing the |
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| 175 | * makernote, as returned from get_EXIF_JPEG |
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| 176 | * filename - the name of the JPEG file being processed ( used |
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| 177 | * by scripts which display embedded thumbnails) |
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| 178 | * |
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| 179 | * |
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| 180 | * Returns: output - the html representing the makernote |
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| 181 | * FALSE - If this script could not interpret the makernote, or if |
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| 182 | * an error occured in decoding |
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| 183 | * |
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| 184 | ******************************************************************************/ |
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| 185 | |
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| 186 | function get_Kyocera_Makernote_Html( $Makernote_tag, $filename ) |
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| 187 | { |
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| 188 | |
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| 189 | // Check that this is a Kyocera Makernote, otherwise it can't be interpreted here |
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| 190 | if ( $Makernote_tag['Makernote Type'] != "Kyocera" ) |
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| 191 | { |
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| 192 | // Not a Kyocera Makernote - cannot interpret it - abort |
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| 193 | return False; |
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| 194 | } |
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| 195 | |
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| 196 | // Interpret the IFD and return the HTML |
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| 197 | return interpret_IFD( $Makernote_tag['Decoded Data'][0], $filename ); |
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| 198 | |
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| 199 | } |
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| 200 | |
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| 201 | /****************************************************************************** |
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| 202 | * End of Function: get_Kyocera_Makernote_Html |
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| 203 | ******************************************************************************/ |
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| 204 | |
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| 205 | |
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| 206 | |
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| 207 | |
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| 208 | |
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| 209 | |
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| 210 | |
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| 211 | |
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| 212 | /****************************************************************************** |
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| 213 | * Global Variable: IFD_Tag_Definitions, Kyocera |
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| 214 | * |
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| 215 | * Contents: This global variable provides definitions of the known Kyocera |
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| 216 | * Makernote tags, indexed by their tag number. |
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| 217 | * |
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| 218 | ******************************************************************************/ |
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| 219 | |
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| 220 | $GLOBALS[ "IFD_Tag_Definitions" ]["Kyocera"] = array( |
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| 221 | |
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| 222 | 1 => array( 'Name' => "Kyocera Proprietory Format Thumbnail", |
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| 223 | 'Type' => "Unknown" ), |
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| 224 | |
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| 225 | 0x0E00 => array( 'Name' => "Print Image Matching Info", |
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| 226 | 'Type' => "PIM" ), |
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| 227 | |
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| 228 | ); |
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| 229 | |
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| 230 | /****************************************************************************** |
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| 231 | * End of Global Variable: IFD_Tag_Definitions, Kyocera |
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| 232 | ******************************************************************************/ |
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| 233 | |
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| 234 | |
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| 235 | |
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| 236 | |
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| 237 | |
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| 238 | |
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| 239 | |
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| 240 | |
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| 241 | ?> |
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