Selected output format > unknown file extension #344

src/common.h

@@ -34,6 +34,11 @@ namespace sharp {
   bool IsTiff(std::string const &str);
   bool IsDz(std::string const &str);
 
+  /*
+    Provide a string identifier for the given image type.
+  */
+  std::string ImageTypeId(ImageType const imageType);
+
   /*
     Determine image format of a buffer.
   */