src/lib.rs

@@ -671,19 +671,19 @@ impl MessageBehavior for VmcExtMidiCcVal {
             args: vec![OscType::from(self.knob), OscType::from(self.value)],
         };
     }
-    fn from_osc_message(msg: OscMessage) -> Result<Self, String> {
+    fn from_osc_message(msg: OscMessage) -> Result<Self, FromMessageErr> {
         if msg.args.len() != 2 {
-            return Err(String::from("arg count invalid"));
+            return Err(FromMessageErr::ArgCount(ArgCountErr { expected_in: vec![2], actual: msg.args.len(), addr: msg.addr}));
         }
         let knob: i32;
         let value: f32;
         match msg.args[0] {
             OscType::Int(i) => knob = i,
-            _ => return Err(String::from("arg type invalid")),
+            _ => return Err(FromMessageErr::ArgType(ArgTypeErr { expected: OscType::Int(0), actual: msg.args[0], addr: msg.addr, arg_count: 0})),
         }
         match msg.args[1] {
             OscType::Float(f) => value = f,
-            _ => return Err(String::from("arg type invalid")),
+            _ => return Err(FromMessageErr::ArgType(ArgTypeErr { expected: OscType::Float(0.0), actual: msg.args[1], addr: msg.addr, arg_count: 1})),
         }
         return Ok(VmcExtMidiCcVal { knob, value });
     }