From 5f9cca928935547ec0d4d449f4864c5eca1e7cf8 Mon Sep 17 00:00:00 2001
From: Marks Polakovs <github@markspolakovs.me>
Date: Thu, 16 Apr 2020 11:06:21 +0200
Subject: [PATCH] Delay turning mic off to compensate for WebAudio latency
 (fixes #72)

---
 src/mixer/state.ts | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/src/mixer/state.ts b/src/mixer/state.ts
index f41d720..768ba77 100644
--- a/src/mixer/state.ts
+++ b/src/mixer/state.ts
@@ -719,9 +719,20 @@ export const setMicVolume = (
 ): AppThunk => dispatch => {
   // no tween fuckery here, just cut the level
   const levelVal = level === "full" ? 1 : 0;
-  dispatch(
-    mixerState.actions.setMicLevels({ volume: levelVal, gain: levelVal })
-  );
+  // actually, that's a lie - if we're turning it off we delay it a little to compensate for
+  // processing latency
+  if (levelVal !== 0) {
+    dispatch(
+      mixerState.actions.setMicLevels({ volume: levelVal, gain: levelVal })
+    );
+  } else {
+    window.setTimeout(() => {
+      dispatch(
+        mixerState.actions.setMicLevels({ volume: levelVal, gain: levelVal })
+      );
+      // latency, plus a little buffer
+    }, audioContext.baseLatency * 1000 + 150);
+  }
 };
 
 let analyser: AnalyserNode | null = null;