Add isRGB method

src/main/java/omero/gateway/facility/RawDataFacility.java

@@ -279,6 +279,24 @@ public List<ResolutionDescription> getResolutionDescriptions(SecurityContext ctx
 
     }
 
+    /**
+     * Checks if the image is considered RGB by the Bioformats Reader
+     * @param ctx The SecurityContext
+     * @param pixels The PixelsData object
+     * @return See above
+     * @throws DataSourceException If an error occurs while retrieving the data
+     */
+    public boolean isRGB(SecurityContext ctx, PixelsData pixels) throws DataSourceException {
+        if (pixels == null)
+            return false;
+
+        try {
+            return getDataSink(ctx, pixels, gateway).isRGB();
+        } catch (DSOutOfServiceException e) {
+            throw new DataSourceException("Can't initiate DataSink", e);
+        }
+    }
+
     /**
      * Retrieves a data sink corresponding the pixels.
      *

src/main/java/omero/gateway/rnd/DataSink.java

@@ -202,6 +202,20 @@ public Plane2D getTile(int z, int t, int c, int x,
         return new Plane2D(array, w, h, bytesPerPixels, strategy);
     }
 
+    /**
+     * Checks if the image is considered RGB by the Bioformats Reader.
+     * @return See above.
+     * @throws DataSourceException
+     *             If an error occurs.
+     */
+    public boolean isRGB() throws DataSourceException {
+        try {
+            return store.isRGB();
+        } catch (Exception e) {
+            throw new DataSourceException("Cannot access RawPixelStore", e);
+        }
+    }
+
     /**
      * Extracts a 2D plane from the pixels set this object is working for.
      *