From c30fb0d38ce5f930663bede4ea7f9928b31695c6 Mon Sep 17 00:00:00 2001
From: Jonas Kvinge <jonas@jkvinge.net>
Date: Sat, 17 Oct 2020 03:19:13 +0200
Subject: [PATCH] Log errors in MM device finder

---
 src/engine/mmdevicefinder.cpp | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/src/engine/mmdevicefinder.cpp b/src/engine/mmdevicefinder.cpp
index e861d2c45..e01ea2385 100644
--- a/src/engine/mmdevicefinder.cpp
+++ b/src/engine/mmdevicefinder.cpp
@@ -37,9 +37,6 @@ MMDeviceFinder::MMDeviceFinder() : DeviceFinder("mmdevice", { "wasapisink" }) {}
 QList<DeviceFinder::Device> MMDeviceFinder::ListDevices() {
 
   HRESULT hr_coinit = CoInitializeEx(NULL, COINIT_MULTITHREADED);
-  if (hr_coinit != S_OK && hr_coinit != S_FALSE) {
-    return QList<Device>();
-  }
 
   QList<Device> devices;
   Device default_device;
@@ -77,18 +74,39 @@ QList<DeviceFinder::Device> MMDeviceFinder::ListDevices() {
                   devices.append(device);
                   PropVariantClear(&var_name);
                 }
+                else {
+                  qLog(Error) << "IPropertyStore::GetValue failed." << Qt::hex << DWORD(hr);
+                }
                 props->Release();
               }
+              else {
+                qLog(Error) << "IPropertyStore::OpenPropertyStore failed." << Qt::hex << DWORD(hr);
+              }
               CoTaskMemFree(pwszid);
             }
+            else {
+              qLog(Error) << "IMMDevice::GetId failed." << Qt::hex << DWORD(hr);
+            }
             endpoint->Release();
           }
+          else {
+            qLog(Error) << "IMMDeviceCollection::Item failed." << Qt::hex << DWORD(hr);
+          }
         }
       }
+      else {
+        qLog(Error) << "IMMDeviceCollection::GetCount failed." << Qt::hex << DWORD(hr);
+      }
       collection->Release();
     }
+    else {
+      qLog(Error) << "EnumAudioEndpoints failed." << Qt::hex << DWORD(hr);
+    }
     enumerator->Release();
   }
+  else {
+    qLog(Error) << "CoCreateInstance failed." << Qt::hex << DWORD(hr);
+  }
 
   if (hr_coinit == S_OK || hr_coinit == S_FALSE) CoUninitialize();