Add TAK mode support to add exif data to incoming TAK messages

utility/exif/94-exif.html

@@ -9,6 +9,7 @@
         <select style="width:70%" id="node-input-mode">
             <option value="normal">Standard node</option>
             <option value="worldmap">Use with Worldmap-in node</option>
+            <option value="tak">Use with TAK Ingest node</option>
         </select>
     </div>
     <div class="form-row" id="node-exif-prop-select">

utility/exif/94-exif.js

@@ -12,6 +12,7 @@ module.exports = function(RED) {
         RED.nodes.createNode(this,n);
         this.mode = n.mode || "normal";
         if (this.mode === "worldmap") { this.property = "payload.content"; }
+        else if (this.mode === "tak") { this.property = "payload.event.detail.image['#text']"; }
         else { this.property = n.property || "payload"; }
         var node = this;
         var ExifReader = require('exifreader');
@@ -81,7 +82,6 @@ module.exports = function(RED) {
             else if (node.mode === "worldmap" && (msg.payload.action !== "file" || msg.payload.type.indexOf("image") === -1)) { return; } // in case worldmap-in not filtered.
             try {
                 var value = RED.util.getMessageProperty(msg,node.property);
-
                 if (value !== undefined) {
                     if (typeof value === "string") { // it must be a base64 encoded inline image type
                         if (value.indexOf('data:image') !== -1) {
@@ -91,7 +91,7 @@ module.exports = function(RED) {
                             value = new Buffer.from(value, 'base64');
                         }
                     }
-                    if (Buffer.isBuffer(value)) { // or a proper jpg buffer
+                    if (Buffer.isBuffer(value)) { // or a proper image buffer
                         msg.exif = ExifReader.load(value);
                         for (const p in msg.exif) {
                             if (msg.exif.hasOwnProperty(p)) {
@@ -108,6 +108,10 @@ module.exports = function(RED) {
                             msg.payload = msg.location || {};
                             delete msg.location;
                         }
+                        if (node.mode === "tak") {
+                            msg.payload.exif = msg.exif || {};
+                            delete msg.exif;
+                        }
                         node.send(msg);
                     }
                     else {
@@ -121,9 +125,15 @@ module.exports = function(RED) {
                 }
             }
             catch (error) {
-                node.error("An error occurred while extracting Exif information. Please check the log for details.",msg);
+                if (node.mode === "tak") {
-                node.log('Error: '+error.message);
+                    node.send(msg);
-                return;
+                    return;
+                }
+                else {
+                    node.error("An error occurred while extracting Exif information. Please check the log for details.",msg);
+                    node.log('Error: '+error.message);
+                    return;
+                }
             }
         });
     }

utility/exif/README.md

@@ -1,7 +1,7 @@
 node-red-node-exif
 ==================
 
-A <a href="http://nodered.org" target="_new">Node-RED</a> node to extract Exif information from JPEG images.
+A <a href="http://nodered.org" target="_new">Node-RED</a> node to extract Exif information from images.
 
 Install
 -------
@@ -17,7 +17,7 @@ This node now uses the more supported exifreader library so that it handles more
 Usage
 -----
 
-Extracts <a href="http://en.wikipedia.org/wiki/Exchangeable_image_file_format">Exif</a> information from JPEG images.
+Extracts <a href="http://en.wikipedia.org/wiki/Exchangeable_image_file_format">Exif</a> information from JPEG or WEBP images.
 
 This node expects an incoming JPEG image as a buffer. If Exif data is present, it extracts the data into a `msg.exif` object.
 
@@ -26,3 +26,5 @@ If the Exif data also contains location information this is extracted as `msg.lo
 `msg.payload` retains the original, unmodified image buffer.
 
 You can set it into "worldmap" mode - in this mode the payload contains the "location" data, not the original image, but can be sent directly to a node-red-contrib-worldmap node for visualisation.
+
+Or you can set it into TAK mode - If used with the TAK Ingest node it can extract the exif data from the overall TAK event payload and adds the exif properties to `msg.payload.exif` instead of `msg.exif`.

utility/exif/package.json

@@ -1,6 +1,6 @@
 {
     "name": "node-red-node-exif",
-    "version": "1.1.0",
+    "version": "1.2.0",
     "description": "A Node-RED node that extracts Exif information from JPEG image buffers.",
     "dependencies": {
         "exifreader": "^4.26.1"