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/**
* @mainpage Bluetooth Hands-Free Profile Server
*
* @section intro Introduction
*
* HFP for Linux is a Bluetooth Hands-Free Profile server, allowing
* your Linux system to act as a speakerphone for your mobile phone.
* It aims to be a compliant Bluetooth HFP 1.5 Hands Free
* implementation, supporting all required commands and notifications,
* as well as streaming audio. The HFP for Linux package includes
* three main components:
*
* - @b libhfp, a modular, toolkit-independent backend library with
* rich APIs. This documentation is primarily concerned with libhfp.
* - @b hfpd, a D-Bus service daemon providing D-Bus APIs. The D-Bus
* APIs are presently undocumented, but are introspectable.
* - @b hfconsole, a PyGTK console application for controlling the
* D-Bus service daemon.
*
* The package also includes @b hfstandalone, a demonstration
* monolithic speakerphone program built with Trolltech Qt. hfstandalone
* uses its own instance of libhfp and operates independently of hfpd.
*
* The developer of HFP for Linux believes that HFP is most useful in
* embedded devices, each with unique user interface requirements.
* Because of this, emphasis is placed on the internals and backend
* interfaces of libhfp, and the D-Bus interfaces of hfpd, so that it
* may be useful as a toolkit for building HFP applications and
* integrating HFP functionality into other applications.
*
* @section features Features
*
* - Supports device scanning, connection, disconnection, and automatic
* reconnection
* - Supports multiple concurrently connected audio gateway devices
* - Resilient to loss of Bluetooth service
* - Modular, event-driven backend
* - All APIs are single-threaded, clients do not need to be concerned with
* thread synchronization
* - Audio handling components are completely asynchronous
* - Supports the ALSA and OSS audio hardware interfaces
* - Supports microphone input cleanup, including echo cancellation and
* noise reduction.
* - Supports simple recording and playback of stored audio files, e.g.
* for recording calls and playing ring tones.
*
* @section reqs Software Requirements and Build Options
*
* - libbluetooth and BlueZ, the Linux Bluetooth stack
* - libasound, the ALSA user-level audio library @em optional
* - The OSS kernel-level audio interface @em optional
* - libaudiofile, the SGI audiofile library @em optional
* - libspeexdsp, the Speex signal processing library @em optional
* - libdbus for hfpd
* - PyGTK and dbus-python for the hfconsole app
* - Trolltech Qt 3.3 for the monolithic demonstration app
*/
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