From d5debf882c6f1b5dfa5f51d84b1a5913f22f3bb3 Mon Sep 17 00:00:00 2001
From: Jordan Eldredge <jordan@jordaneldredge.com>
Date: Mon, 9 Apr 2018 07:01:02 -0700
Subject: [PATCH] Try to do a better job cleaning up channel detection audio
 nodes

---
 js/media/detectChannels.js | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/js/media/detectChannels.js b/js/media/detectChannels.js
index 16a2b428..56971f1f 100644
--- a/js/media/detectChannels.js
+++ b/js/media/detectChannels.js
@@ -15,14 +15,21 @@ function createAnalysers(source) {
   leftGain.connect(leftAnalyser);
   rightGain.connect(rightAnalyser);
 
-  return { left: leftAnalyser, right: rightAnalyser };
+  function destroy() {
+    source.disconnect(splitter);
+    splitter.disconnect();
+    leftGain.disconnect();
+    rightGain.disconnect();
+  }
+
+  return { left: leftAnalyser, right: rightAnalyser, destroy };
 }
 
 const MAX_CALLS = 1000;
 
 export default async function detectChannels(source) {
   return new Promise((resolve, reject) => {
-    const { left, right } = createAnalysers(source);
+    const { left, right, destroy } = createAnalysers(source);
 
     const dataArray = new Uint8Array(left.frequencyBinCount);
     let maxLeft = 0;
@@ -40,11 +47,13 @@ export default async function detectChannels(source) {
         } else {
           resolve(1);
         }
+        destroy();
         clearInterval(intervalHandle);
       }
 
       if (calls >= MAX_CALLS) {
         reject();
+        destroy();
       }
 
       calls++;