1 files changed, 3 insertions, 3 deletions
diff --git a/mumd/src/audio/transformers.rs b/mumd/src/audio/transformers.rs
index 25e28b8..91cf3ac 100644
--- a/mumd/src/audio/transformers.rs
+++ b/mumd/src/audio/transformers.rs
@@ -2,7 +2,7 @@
 pub trait Transformer {
     /// Do the transform. Returning `None` is interpreted as "the buffer is unwanted".
     /// The implementor is free to modify the buffer however it wants to.
-    fn transform<'a>(&mut self, buf: &'a mut [f32]) -> Option<&'a mut [f32]>;
+    fn transform<'a>(&mut self, buf: (opus::Channels, &'a mut [f32])) -> Option<(opus::Channels, &'a mut [f32])>;
 }
 
 /// A struct representing a noise gate transform.
@@ -25,7 +25,7 @@ impl NoiseGate {
 }
 
 impl Transformer for NoiseGate {
-    fn transform<'a>(&mut self, buf: &'a mut [f32]) -> Option<&'a mut [f32]> {
+    fn transform<'a>(&mut self, (channels, buf): (opus::Channels, &'a mut [f32])) -> Option<(opus::Channels, &'a mut [f32])> {
         const MUTE_PERCENTAGE: f32 = 0.1;
 
         let max = buf.iter().map(|e| e.abs()).max_by(|a, b| a.partial_cmp(b).unwrap()).unwrap();
@@ -43,7 +43,7 @@ impl Transformer for NoiseGate {
         if self.open == 0 {
             None
         } else {
-            Some(buf)
+            Some((channels, buf))
         }
     }
 }