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152 lines
4.3 KiB
XML
152 lines
4.3 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?> <!-- -*-html-helper-*- -->
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>polypaudio: Simple Command Line Language</title>
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<link rel="stylesheet" type="text/css" href="style.css" />
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</head>
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<body>
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<h1>Simple Command Line Language</h1>
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<p><tt>polypaudio</tt> provides a simple command line language used by
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configuration scripts as well as the modules <tt>module-cli</tt>
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and <tt>module-cli-protocol-{unix,tcp}</tt>. Empty lines and lines
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beginning with a hashmark (<tt>#</tt>) are silently ignored. Several
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commands are supported:</p>
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<h2>Miscellaneous Commands</h2>
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<h3><tt>help</tt></h3>
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<p>Show a quick help on the commands available.</p>
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<h3><tt>exit</tt></h3>
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<p>Terminate the daemon. If you want to terminate a CLI connection
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("log out") you might want to use <tt>C-d</tt>.</p>
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<h2>Status Commands</h2>
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<h3><tt>modules</tt></h3>
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<p>Show all currently loaded modules with their arguments.</p>
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<h3><tt>sinks/sources</tt></h3>
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<p>Show all currently registered sinks (resp. sources).</p>
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<h3><tt>clients</tt></h3>
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<p>Show all currently active clients.</p>
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<h3><tt>sink_inputs/sink_outputs</tt></h3>
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<p>Show all currently active inputs to sinks (resp. outputs of sources).</p>
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<h3><tt>stat</tt></h3>
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<p>Show some simple statistics about the allocated memory blocks and
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the space used by them.</p>
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<h3><tt>info</tt></h3>
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<p>A combination of all status commands described above. <tt>ls</tt>
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and <tt>list</tt> are synonyms for <tt>info</tt>.</p>
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<h2>Module Management</h2>
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<h3><tt>load</tt></h3>
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<p>Load a module specified by its name and arguments. For most modules
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it is OK to be loaded more than once.</p>
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<h3><tt>unload</tt></h3>
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<p>Unload a module specified by its index in the module list as
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returned by <tt>modules</tt>.</p>
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<h2>Configuration Commands</h2>
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<h3><tt>sink_volume</tt></h3>
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<p>Set the volume of the specified sink. You may specify the sink either
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by its index in the sink list or by its name. The volume should be an
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integer value greater or equal than 0 (= muted). Volume 256
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(<tt>0x100</tt>) is normal volume, values greater than this amplify
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the audio signal with clipping.</p>
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<h3><tt>sink_input_volume</tt></h3>
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<p>Set the volume of a sink input specified by its index the the sink
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input list. The same volume rules apply as with <tt>sink_volume</tt>.</p>
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<h3><tt>sink_default/source_default</tt></h3>
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<p>Make a sink (resp. source) the default. You may specify the sink
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(resp. ssource) by its index in the sink (resp. source) list or by its
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name.</p>
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<h2>Killing clients/streams</h2>
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<h3><tt>kill_client</tt></h3>
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<p>Remove a client forcibly from the server. There is no protection that
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the client reconnects immediately.</p>
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<h3><tt>kill_sink_input/kill_source_output</tt></h3>
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<p>Remove a sink input (resp. source output) forcibly from the
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server. This will not remove the owning client or any other streams
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opened by the client from the server.</p>
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<h2>Meta Commands</h2>
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<p>In addition the the commands described above there a few meta
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directives supported by the command line interpreter:</p>
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<h3><tt>.include</tt></h3>
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<p>Executes the commands from the specified script file.</p>
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<h3><tt>.fail/.nofail</tt></h3>
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<p>Enable (resp. disable) that following failing commands will cancel
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the execution of the current script file. This is a ignored when used
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on the interactive command line.</p>
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<h3><tt>.verbose/.noverbose</tt></h3>
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<p>Enable (resp. disable) extra verbosity.</p>
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<h2>Example Configuration Script</h2>
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<pre>
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#!/usr/bin/polaudio -F
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# Load audio drivers
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load module-alsa-sink device=plughw:0,0 rate=48000
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load module-alsa-source device=hw:1,0
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# Load several protocols
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load module-esound-protocol-tcp
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load module-simple-protocol-tcp
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load module-native-protocol-unix
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load module-cli-protocol-unix
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# Load the CLI module (This is similar to passing "-C" on the command line of polypaudio)
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load module-cli
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.nofail
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# Make some devices default
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sink_default alsa_output
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source_default alsa_input
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# Use digital amplification
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sink_volume alsa_output 0x200
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</pre>
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<hr/>
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<address class="grey">Lennart Poettering <@PACKAGE_BUGREPORT@>, July 2004</address>
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<div class="grey"><i>$Id$</i></div>
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</body> </html>
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