1 files changed, 15 insertions, 0 deletions
diff --git a/src/synth/param.rs b/src/synth/param.rs
index f679b56..859f789 100644
--- a/src/synth/param.rs
+++ b/src/synth/param.rs
@@ -12,7 +12,22 @@ impl Generator for Param {
         self.buf.set(*params.vars.get(&self.name).unwrap_or(&self.default));
         &self.buf
     }
+    fn buffer<'a>(&'a self) -> &'a SampleBuffer { &self.buf }
     fn set_buffer(&mut self, buf: SampleBuffer) -> SampleBuffer {
         mem::replace(&mut self.buf, buf)
     }
 }
+
+pub struct ParamFactory;
+
+impl GeneratorFactory for ParamFactory {
+    fn new(&self, params: &mut FactoryParameters) -> Result<GenBox, GenFactoryError> {
+        Ok(Box::new(Param {
+            name: params.get_req_param("name", 0)?.as_string()?,
+            default: params.get_param("default", 1, &ParamValue::Float(0.0)).as_f32()?,
+            buf: SampleBuffer::new(1),
+        }))
+    }
+}
+
+pub static Factory: ParamFactory = ParamFactory;