Merge remote-tracking branch 'upstream/pr/139'

1 files changed, 6 insertions, 4 deletions

diff --git a/RtAudio.cpp b/RtAudio.cpp
index 330ff28..77bd4b6 100644
--- a/RtAudio.cpp
+++ b/RtAudio.cpp
@@ -4114,10 +4114,9 @@ RtApiWasapi::RtApiWasapi()
                          CLSCTX_ALL, __uuidof( IMMDeviceEnumerator ),
                          ( void** ) &deviceEnumerator_ );
 
-  if ( FAILED( hr ) ) {
-    errorText_ = "RtApiWasapi::RtApiWasapi: Unable to instantiate device enumerator";
-    error( RtAudioError::DRIVER_ERROR );
-  }
+  // If this runs on an old Windows, it will fail. Ignore and proceed.
+  if ( FAILED( hr ) )
+    deviceEnumerator_ = NULL;
 }
 
 //-----------------------------------------------------------------------------
@@ -4144,6 +4143,9 @@ unsigned int RtApiWasapi::getDeviceCount( void )
   IMMDeviceCollection* captureDevices = NULL;
   IMMDeviceCollection* renderDevices = NULL;
 
+  if ( !deviceEnumerator_ )
+    return 0;
+
   // Count capture devices
   errorText_.clear();
   HRESULT hr = deviceEnumerator_->EnumAudioEndpoints( eCapture, DEVICE_STATE_ACTIVE, &captureDevices );