76     $meta = new JpegMeta($src);
77     $meta->_parseAll();
82             $meta->deleteField($key);
84             $meta->setField($key, $val);
94     if ($meta->save()) {
1015         $meta = new JpegMeta(mediaFN($image, $rev));
1016         media_preview($image, $auth, $rev, $meta);
1018         media_details($image, $auth, $rev, $meta);
1078  * @param JpegMeta|bool  $meta
1082 function media_preview($image, $auth, $rev = '', $meta = false)  argument
1085     $size = media_image_preview_size($image, $rev, $meta);
1180  * @param JpegMeta|bool  $meta
1184 function media_image_preview_size($image, $rev, $meta = false, $size = 500)  argument
1195     if ($meta && ($w > $size || $h > $size)) {
1196         $ratio = $meta->getResizeRatio($size, $size);
1209  * @param JpegMeta $meta
1213 function media_getTag($tags, $meta = false, $alt = '')  argument
1215     if (!$meta) return $alt;
1216     $info = $meta->getField($tags);
1226  * @param JpegMeta $meta
1229 function media_file_tags($meta)  argument
1246         $value = media_getTag($t, $meta);
1261  * @param bool|JpegMeta $meta  image object, or create one if false
1263 function media_details($image, $auth, $rev = '', $meta = false)  argument
1267     if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev));
1268     $tags = media_file_tags($meta);