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How to detect the audio endpoint device in Windows Phone 8 App ?

This blog post will explain how to detect the audio endpoint device that is connected to the Windows Phone 8 device .

How to detect the audio endpoint device in Windows Phone 8 App ?

The Windows Phone 8 SDK provides the VOIP AudioRoutingManager API which can be used to determine the connected audio endpoint device.

The AudioRoutingManager has the method GetAudioEndpoint which returns the AudioRoutingEndpoint . The AudioRoutingEndpoint is a enum which contains one of the values (Earpiece,Speakerphone,Bluetooth,WiredHeaset,WiredHeadsetSpeakerOnly,BluetoothWithNoiseAndEchoCancellation,Default).

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Here’s a codesnippet to get the audio endpoint device that is connected.

AudioRoutingEndpoint current = AudioRoutingManager.GetDefault().GetAudioEndpoint();           
MessageBox.Show(current.ToString());

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Note that you need to add the ID_CAP_VOIP capability in your WMAppManifest file or else you will receive the following error when trying to access the endpoint.

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An exception of type ‘System.UnauthorizedAccessException’ occurred in MobileOSGeekApps.DLL but was not handled in user code

Additional information: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

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