feat: Remove writing of native camera RAW formats from SDK

sdk/src/asset_handlers/tiff_io.rs

@@ -68,6 +68,16 @@ static SUPPORTED_TYPES: [&str; 10] = [
     "image/x-nikon-nef",
 ];
 
+// Writing native formats is beyond the scope of the SDK.
+static SUPPORTED_WRITER_TYPES: [&str; 6] = [
+    "tif",
+    "tiff",
+    "image/tiff",
+    "dng",
+    "image/dng",
+    "image/x-adobe-dng",
+];
+
 // The type of an IFD entry
 #[derive(Debug, PartialEq)]
 enum IFDEntryType {
@@ -1414,7 +1424,11 @@ impl AssetIO for TiffIO {
     }
 
     fn get_writer(&self, asset_type: &str) -> Option<Box<dyn CAIWriter>> {
-        Some(Box::new(TiffIO::new(asset_type)))
+        if SUPPORTED_WRITER_TYPES.contains(&asset_type) {
+            Some(Box::new(TiffIO::new(asset_type)))
+        } else {
+            None
+        }
     }
 
     fn remote_ref_writer_ref(&self) -> Option<&dyn RemoteRefEmbed> {

sdk/src/jumbf_io.rs

@@ -421,6 +421,10 @@ pub mod tests {
                 assert!(get_caiwriter_handler(supported_type).is_some());
             }
         }
+
+        // Writing native formats is beyond the scope of the SDK.
+        assert!(get_caiwriter_handler("nef").is_none());
+        assert!(get_caiwriter_handler("arw").is_none());
     }
 
     #[test]