1 | <?php |
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2 | |
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3 | /****************************************************************************** |
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4 | * |
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5 | * Filename: sony.php |
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6 | * |
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7 | * Description: Sony Makernote Parser |
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8 | * Provides functions to decode an Sony EXIF makernote and to interpret |
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9 | * the resulting array into html. |
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10 | * |
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11 | * Sony 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 12 Bytes "SONY CAM \x00\x00\x00" |
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16 | * or |
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17 | * "SONY DSC \x00\x00\x00" |
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18 | * IFD Data Variable NON-Standard IFD Data using Sony Tags |
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19 | * IFD has no Next-IFD pointer at end of IFD, |
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20 | * ---------------------------------------------------------------- |
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21 | * |
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22 | * |
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23 | * Author: Evan Hunter |
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24 | * |
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25 | * Date: 30/7/2004 |
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26 | * |
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27 | * Project: JPEG Metadata |
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28 | * |
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29 | * Revision: 1.00 |
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30 | * |
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31 | * URL: http://electronics.ozhiker.com |
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32 | * |
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33 | * Copyright: Copyright " . $auteur . " 2004 |
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34 | * This file may be used freely for non-commercial purposes.For |
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35 | * commercial uses please contact the author: evan@ozhiker.com |
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36 | * |
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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 | |
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42 | // Add the parser and interpreter functions to the list of Makernote parsers and interpreters. |
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43 | |
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44 | $GLOBALS['Makernote_Function_Array']['Read_Makernote_Tag'][] = "get_Sony_Makernote"; |
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45 | $GLOBALS['Makernote_Function_Array']['get_Makernote_Text_Value'][] = "get_Sony_Text_Value"; |
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46 | $GLOBALS['Makernote_Function_Array']['Interpret_Makernote_to_HTML'][] = "get_Sony_Makernote_Html"; |
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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 | /****************************************************************************** |
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53 | * |
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54 | * Function: get_Sony_Makernote |
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55 | * |
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56 | * Description: Decodes the Makernote tag and returns the new tag with the decoded |
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57 | * information attached. Returns false if this is not a makernote |
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58 | * that can be processed with this script |
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59 | * |
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60 | * Parameters: Makernote_Tag - the element of an EXIF array containing the |
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61 | * makernote, as returned from get_EXIF_JPEG |
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62 | * EXIF_Array - the entire EXIF array containing the |
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63 | * makernote, as returned from get_EXIF_JPEG, in |
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64 | * case more information is required for decoding |
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65 | * filehnd - an open file handle for the file containing the |
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66 | * makernote - does not have to be positioned at the |
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67 | * start of the makernote |
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68 | * Make_Field - The contents of the EXIF Make field, to aid |
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69 | * determining whether this script can decode |
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70 | * the makernote |
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71 | * |
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72 | * |
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73 | * Returns: Makernote_Tag - the Makernote_Tag from the parameters, but |
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74 | * modified to contain the decoded information |
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75 | * FALSE - If this script could not decode the makernote, or if |
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76 | * an error occured in decoding |
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77 | * |
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78 | ******************************************************************************/ |
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79 | |
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80 | function get_Sony_Makernote( $Makernote_Tag, $EXIF_Array, $filehnd, $Make_Field ) |
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81 | { |
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82 | |
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83 | // Check if the Make Field contains the word Sony |
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84 | if ( stristr( $Make_Field, "Sony" ) === FALSE ) |
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85 | { |
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86 | // This isn't a Sony makernote |
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87 | return FALSE; |
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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, 12 ) != "SONY CAM \x00\x00\x00" ) && |
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92 | ( substr( $Makernote_Tag['Data'], 0, 12 ) != "SONY DSC \x00\x00\x00" ) ) |
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93 | { |
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94 | // This isn't a Sony Makernote, abort |
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95 | return FALSE ; |
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96 | } |
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97 | |
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98 | // Seek to the start of the IFD |
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99 | fseek($filehnd, $Makernote_Tag['Tiff Offset'] + $Makernote_Tag['Offset'] + 12 ); |
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100 | |
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101 | // Read the IFD(s) into an array |
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102 | |
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103 | |
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104 | $Makernote_Tag['Decoded Data'] = read_Multiple_IFDs( $filehnd, $Makernote_Tag['Tiff Offset'], $Makernote_Tag['ByteAlign'], "Sony", FALSE, FALSE ); |
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105 | |
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106 | // Save some information into the Tag element to aid interpretation |
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107 | $Makernote_Tag['Decoded'] = TRUE; |
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108 | $Makernote_Tag['Makernote Type'] = "Sony"; |
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109 | $Makernote_Tag['Makernote Tags'] = "sony"; |
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110 | |
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111 | |
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112 | // Return the new tag |
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113 | return $Makernote_Tag; |
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114 | |
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115 | |
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116 | } |
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117 | |
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118 | /****************************************************************************** |
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119 | * End of Function: get_Sony_Makernote |
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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 | |
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126 | |
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127 | /****************************************************************************** |
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128 | * |
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129 | * Function: get_Sony_Text_Value |
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130 | * |
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131 | * Description: Provides a text value for any tag marked as special for makernotes |
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132 | * that this script can decode. Returns false if this is not a makernote |
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133 | * that can be processed with this script |
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134 | * |
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135 | * Parameters: Exif_Tag - the element of an the Makernote array containing the |
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136 | * tag in question, as returned from get_Sony_Makernote |
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137 | * Tag_Definitions_Name - The name of the Tag Definitions group |
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138 | * within the global array IFD_Tag_Definitions |
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139 | * |
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140 | * |
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141 | * Returns: output - the text value for the tag |
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142 | * FALSE - If this script could not decode the makernote, or if |
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143 | * an error occured in decoding |
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144 | * |
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145 | ******************************************************************************/ |
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146 | |
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147 | function get_Sony_Text_Value( $Exif_Tag, $Tag_Definitions_Name ) |
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148 | { |
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149 | // Check that this tag uses the Sony tags, otherwise it can't be decoded here |
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150 | if ( $Tag_Definitions_Name == "Sony" ) |
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151 | { |
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152 | // No Special Tags yet |
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153 | return FALSE; |
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154 | } |
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155 | |
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156 | return FALSE; |
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157 | } |
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158 | |
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159 | /****************************************************************************** |
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160 | * End of Function: get_Sony_Text_Value |
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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 | * |
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170 | * Function: get_Sony_Makernote_Html |
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171 | * |
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172 | * Description: Attempts to interpret a makernote into html. Returns false if |
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173 | * it is not a makernote that can be processed with this script |
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174 | * |
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175 | * Parameters: Makernote_Tag - the element of an EXIF array containing the |
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176 | * makernote, as returned from get_EXIF_JPEG |
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177 | * filename - the name of the JPEG file being processed ( used |
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178 | * by scripts which display embedded thumbnails) |
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179 | * |
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180 | * |
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181 | * Returns: output - the html representing the makernote |
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182 | * FALSE - If this script could not interpret the makernote, or if |
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183 | * an error occured in decoding |
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184 | * |
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185 | ******************************************************************************/ |
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186 | |
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187 | function get_Sony_Makernote_Html( $Makernote_tag, $filename ) |
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188 | { |
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189 | |
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190 | // Check that this tag uses the Sony tags, otherwise it can't be interpreted here |
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191 | if ( $Makernote_tag['Makernote Type'] != "Sony" ) |
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192 | { |
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193 | // Not Sony tags - can't interpret with this function |
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194 | return FALSE; |
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195 | } |
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196 | |
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197 | // Interpret the IFD and return the HTML |
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198 | return interpret_IFD( $Makernote_tag['Decoded Data'][0], $filename ); |
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199 | |
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200 | } |
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201 | |
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202 | /****************************************************************************** |
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203 | * End of Function: get_Sony_Makernote_Html |
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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 | |
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214 | |
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215 | /****************************************************************************** |
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216 | * Global Variable: IFD_Tag_Definitions, Sony |
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217 | * |
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218 | * Contents: This global variable provides definitions of the known Sony |
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219 | * Makernote tags, indexed by their tag number. |
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220 | * |
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221 | ******************************************************************************/ |
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222 | |
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223 | $GLOBALS[ "IFD_Tag_Definitions" ]["Sony"] = array( |
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224 | |
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225 | 0xE00 => 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, Sony |
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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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242 | |
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243 | |
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244 | ?> |
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