From acf6e364e709e4b4d8a7e9f0e1320a29833083cc Mon Sep 17 00:00:00 2001
From: Glenn Harper <64209257+glharper@users.noreply.github.com>
Date: Tue, 13 Jul 2021 15:14:40 -0700
Subject: [PATCH] Glharper/audio input reattach fix (#402)

* Fix push stream not being reconnected to with start-stop-start continuous recognition, add test

* change timeout for added test

* Fix error when down sampling with audioWorkletNode
---
 src/common/RiffPcmEncoder.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/common/RiffPcmEncoder.ts b/src/common/RiffPcmEncoder.ts
index 45c9748d..18d90cab 100644
--- a/src/common/RiffPcmEncoder.ts
+++ b/src/common/RiffPcmEncoder.ts
@@ -47,6 +47,10 @@ export class RiffPcmEncoder {
         srcRate: number,
         dstRate: number): Float32Array => {
 
+        if (!srcFrame) {
+            return null;
+        }
+
         if (dstRate === srcRate || dstRate > srcRate) {
             return srcFrame;
         }