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<a name="Overview.of.plugins.shipped.with.AFB-Daemon"></a>
<h1>Overview of plugins shipped with AFB-Daemon</h1>

<pre><code>Version: 1
Date:    30 mai 2016
Author:  Manuel Bachmann
</code></pre>

<a name="List.of.plugins"></a>
<h2>List of plugins</h2>

<p>  Here are the plugins shipped in the source tree:
 * Hello World
 * Authentication
 * Tic Tac Toe
 * Audio <em>(2 backends: ALSA/PulseAudio)</em>
 * Radio <em>(1 backend: RTLSDR RTL2832U)</em>
 * Media <em>(1 backend: Rygel UPnP)</em></p>

<p>All plugins may not be built, depending on the development libraries present on the system at build time.</p>

<a name="Detail.of.plugins"></a>
<h2>Detail of plugins</h2>

<a name="Hello.World"></a>
<h3>Hello World</h3>

<p>A sample Hello World plugin for demonstration and learning purposes.</p>

<p>This plugin provides a few unauthenticated requests, all beginning with &ldquo;ping&rdquo;, to demonstrate basic binder capabilities.</p>

<p><strong>Verbs</strong>:
* <em>ping:</em> returns a success response
* <em>pingfail:</em> returns a failure response
* <em>pingnull:</em> returns a success response, with an empty JSON response field
* <em>pingbug:</em> does a memory violation (intercepted by the binder)
* <em>pingJson:</em> returns a success response, with a complex JSON response field
* <em>pingevent:</em> broadcasts a global event</p>

<p><br /></p>

<a name="Authentication"></a>
<h3>Authentication</h3>

<p>An sample Authentication plugin for demonstration purposes.</p>

<p>This plugin provides a few requests to demonstrate the binder&rsquo;s token-based security mechanism.</p>

<p>Calling &ldquo;<em>connect</em>&rdquo; with a security token will initiate a session, calling &ldquo;<em>refresh</em>&rdquo; will issue a new token and invalidate the previous one, calling &ldquo;<em>logout</em>&rdquo; will invalidate all tokens and close the session.</p>

<p><strong>Verbs</strong>:
* <em>ping:</em> returns a success response
* <em>connect:</em> creates a session and returns a new token
* <em>refresh:</em> returns a new token
* <em>check:</em> verifies the passed token is valid
* <em>logout:</em> closes the session</p>

<p><br /></p>

<a name="Tic.Tac.Toe"></a>
<h3>Tic Tac Toe</h3>

<p>A sample Tic Tac Toe game plugin.</p>

<p>This plugin provides an interactive Tic Tac Toe game where the binder returns the grid as a JSON response.</p>

<p><strong>Verbs</strong>:
* <em>new:</em> starts a new game
* <em>play:</em> asks the server to play
* <em>move:</em> gives a client move
* <em>board:</em> gets the current board state, as a JSON structure
* <em>level</em>: sets the server level
* <em>join</em>: joins an existing board
* <em>undo</em>: undo the last move
* <em>wait</em>: wait for a move</p>

<p><br /></p>

<a name="Audio"></a>
<h3>Audio</h3>

<p>A sample Audio plugin with 2 backends:
 * ALSA (mandatory)
 * PulseAudio (optional)</p>

<p>This plugin is able to initialize a specific soundcard, define volume levels, channels (mono/stereo&hellip;), mute sound, and play a 22,050 Hz PCM stream.</p>

<p><strong>Verbs</strong>:
* <em>ping:</em> returns a success response
* <em>init:</em> initializes backend, on the &ldquo;default&rdquo; sound card
* <em>volume:</em> gets or sets volume, in % (0-100)
* <em>channels:</em> gets or sets channels count (1-8)
* <em>mute:</em> gets or sets the mute status (on-off)
* <em>play</em>: gets or sets the playing status (on-off)</p>

<p><em>(if PulseAudio development libraries are not found at build time, only ALSA will be available)</em></p>

<p><em>(if a PulseAudio server is not found at runtime, the plugin will dynamically fall back to ALSA)</em></p>

<p><em>(a specifc backend can be forced by using this syntax before running afb-daemon : <strong>$ export AFB_AUDIO_OUTPUT=Alsa</strong>)</em></p>

<p><br /></p>

<a name="Radio"></a>
<h3>Radio</h3>

<p>A sample AM/FM Radio plugin with 1 backend:
 * RTLSDR - Realtek RTL2832U dongles (mandatory)</p>

<p>This plugin is able to initialize specific RTL2832U dongles, switch between AM/FM modes, define frequency, mute sound, and play sound (if combining with the <strong>audio</strong> plugin).</p>

<p><strong>Verbs</strong>:
* <em>ping:</em> returns a success response
* <em>init:</em> initializes backend, looking for plugged-in devices
* <em>power:</em> sets device power status (on-off)
* <em>mode:</em> sets device reception mode (AM-FM)
* <em>freq:</em> sets device frequency (in Hz)
* <em>mute</em>: sets device mute status (on-off)
* <em>play</em>: sets device playing status (on-off)</p>

<p><em>(if rtlsdr development libraries are not found at build time, this plugin will not be built)</em></p>

<p><br /></p>

<a name="Media"></a>
<h3>Media</h3>

<p>A sample Media Server plugin with 1 backend:
 * Rygel</p>

<p>This plugin is able to detect a local Rygel UPnP media server, list audio files, select an audio file for playback, play/pause/seek in this file, upload an audio file to the server.</p>

<p><strong>Verbs</strong>:
* <em>ping:</em> returns a success response
* <em>init:</em> initializes backend, looking for an active local UPnP server
* <em>list:</em> returns list of audio files, as a JSON structure
* <em>select:</em> select an audio files, by index number (001-&hellip;)
* <em>play:</em> plays the currently selected audio file
* <em>stop:</em> stops the currently selected audio file
* <em>pause:</em> pauses the currently selected audio file
* <em>seek:</em> seeks in the currently selected audio file, in seconds
* <em>upload:</em> uploads an audio file, with a POST request</p>

<p><em>(if GUPnP/GSSDP development libraries are not fund at build time, this plugin will not be built)</em></p>

<p><br /></p>

<hr />

<p><br /></p>

<p>Sample command-line applications: <em>afb-client-demo</em> (built by default)</p>

<p>Sample HTML5 applications: <strong>test/*.html</strong>, <strong><a href="https://github.com/iotbzh/afb-client">afb-client</a></strong>, <strong><a href="https://github.com/iotbzh/afb-radio">afb-radio</a></strong></p>

<p>Sample Qt/QML applications: <em>test/token-websock.qml</em></p>
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