From 513071b60adee710486b31e74be38b0b0f761abc Mon Sep 17 00:00:00 2001
From: Artem <artemciy@gmail.com>
Date: Sat, 14 Jul 2018 15:41:30 +0200
Subject: [PATCH] Don't panic when an audio device is disconnected.

---
 src/wasapi/stream.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/wasapi/stream.rs b/src/wasapi/stream.rs
index 1b30c97..0f19157 100644
--- a/src/wasapi/stream.rs
+++ b/src/wasapi/stream.rs
@@ -494,6 +494,13 @@ impl EventLoop {
                     let mut frames_available = {
                         let mut padding = mem::uninitialized();
                         let hresult = (*stream.audio_client).GetCurrentPadding(&mut padding);
+                        // Happens when a bluetooth headset was turned off, for example.
+                        if hresult == AUDCLNT_E_DEVICE_INVALIDATED {
+                            // The client code should switch to a different device eventually.
+                            // For now let's just skip the invalidated device.
+                            // Would be nice to inform the client code about the invalidation,
+                            // but throwing a panic isn't the most ergonomic way to do so.
+                            continue}
                         check_result(hresult).unwrap();
                         stream.max_frames_in_buffer - padding
                     };