BlueZ D-Bus Audio API description
*********************************

Copyright (C) 2004-2008  Marcel Holtmann <marcel@holtmann.org>
Copyright (C) 2005-2007  Johan Hedberg <johan.hedberg@nokia.com>
Copyright (C) 2005-2006  Brad Midgley <bmidgley@xmission.com>


Headset hierarchy
=================

Service		org.bluez
Interface	org.bluez.Headset
Object path	[variable prefix]/{hci0,hci1,...}/dev_XX_XX_XX_XX_XX_XX

Methods		void Connect()

			Connect to the HSP/HFP service on the remote device.

		void Disconnect()

			Disconnect from the HSP/HFP service on the remote
			device.

		boolean IsConnected()

			Returns TRUE if there is a active connection to the
			HSP/HFP connection on the remote device.

		void IndicateCall()

			Indicate an incoming call on the headset
			connected to the stream. Will continue to
			ring the headset about every 3 seconds.

		void CancelCall()

			Cancel the incoming call indication.

		void Play()

			Open the audio connection to the headset.

		void Stop()

			Close the audio connection.

		boolean IsPlaying()

			Returns true if an audio connection to the headset
			is active.

		uint16 GetSpeakerGain()

			Returns the current speaker gain if available,
			otherwise returns the error NotAvailable.

		uint16 GetMicrophoneGain()

			Returns the current microphone gain if available,
			otherwise returns the error NotAvailable.

		void SetSpeakerGain(uint16 gain)

			Changes the current speaker gain if possible.

		void SetMicrophoneGain(uint16 gain)

			Changes the current speaker gain if possible.

Signals		void AnswerRequested()

			Sent when the answer button is pressed on the headset

		void Connected()

			Sent when the device has been connected to.

		void Disconnected()

			Sent when the device has been disconnected from.

		void Stopped()

			Sent when the audio connection is closed

		void Playing()

			Sent when the audio connection is opened

		void SpeakerGainChanged(uint16 gain)

			The speaker gain changed.

		void MicrophoneGainChanged(uint16 gain)

			The microphone gain changed.


AudioSink hierarchy
===================

Service		org.bluez
Interface	org.bluez.AudioSink
Object path	[variable prefix]/{hci0,hci1,...}/dev_XX_XX_XX_XX_XX_XX

Methods		void Connect()

			Connect and setup a stream to a A2DP sink on the
			remote device.

		void Disconnect()

			Disconnect from the remote device.

		boolean IsConnected()

			Returns TRUE if a stream is setup to a A2DP sink on
			the remote device.

Signals		void Connected()

			Sent when a successful connection has been made to the
			remote A2DP Sink

		void Disconnected()

			Sent when the device has been disconnected from.

		void Playing()

			Sent when a stream with remote device is started.

		void Stopped()

			Sent when a stream with remote device is suspended.