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220 lines
6.9 KiB
XML
220 lines
6.9 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>list-modules</tt></h3>
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<p>Show all currently loaded modules with their arguments.</p>
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<h3><tt>list-sinks/list-sources</tt></h3>
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<p>Show all currently registered sinks (resp. sources).</p>
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<h3><tt>list-clients</tt></h3>
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<p>Show all currently active clients.</p>
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<h3><tt>list-sink-inputs/list-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-module</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-module</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>set-sink-volume</tt>/<tt>set-source-volume</tt></h3>
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<p>Set the volume of the specified sink or source. You may specify the sink/source either
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by its index in the sink/source list or by its name. The volume should be an
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integer value greater or equal than 0 (= muted). Volume 65536
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(<tt>0x10000</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>set-sink-mute</tt>/<tt>set-source-mute</tt></h3>
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<p>Mute or unmute the specified sink our source. You may specify the
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sink/source either by its index or by its name. The mute value is
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either 0 or 1.</p>
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<h3><tt>set-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>set-default-sink</tt>/<tt>set-default-source</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>Sample Cache</h2>
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<h3><tt>list-samples</tt></h3>
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<p>Lists the contents of the sample cache.</p>
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<h3><tt>play-sample</tt></h3>
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<p>Play a sample cache entry to a sink. Expects the sample name and the sink name as arguments.</p>
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<h3><tt>remove-sample</tt></h3>
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<p>Remove an entry from the sample cache. Expects the sample name as argument.</p>
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<h3><tt>load-sample</tt></h3>
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<p>Load an audio file to the sample cache. Expects the file name to load and the desired sample name as arguments.</p>
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<h3><tt>load-sample-lazy</tt></h3>
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<p>Create a new entry in the sample cache, but don't load the sample
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immediately. The sample is loaded only when it is first used. After a
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certain idle time it is freed again. Expects the the desired sample
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name and file name to load as arguments.</p>
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<h3><tt>load-sample-dir-lazy</tt></h3>
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<p>Load all entries in the specified directory into the sample cache
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as lazy entries. A shell globbing expression (e.g. <tt>*.wav</tt>) may
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be appended to the path of the directory to add.</p>
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<h2>Module Autoloading</h2>
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<h3><tt>list-autoload</tt></h3>
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<p>Lists all currently defined autoloading entries.</p>
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<h3><tt>add-autoload-sink/add-autoload-source</tt></h3>
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<p>Adds an autoloading entry for a sink (resp. source). Expects the sink name (resp. source name), the module name and the module arguments as arguments.</p>
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<h3><tt>remove-autoload-sink/remove-autoload-source</tt></h3>
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<p>Remove an autoloading entry. Expects the sink name (resp. source name) as argument.</p>
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<h2>Miscellaneous Commands</h2>
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<h3><tt>play-file</tt></h3>
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<p>Play an audio file to a sink. Expects the file name and the sink name as argumens.</p>
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<h3><tt>dump</tt></h3>
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<p>Dump the daemon's current configuration in CLI commands.</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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<p>Mark the following script as executable (<tt>chmod +x</tt>) and run it for a sensible polypaudio configuration.</p>
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<pre>
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#!/usr/bin/polaudio -nF
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# Create autoload entries for the device drivers
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add-autoload-sink output module-alsa-sink device=plughw:0,0 rate=48000 sink_name=output
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add-autoload-sink output2 module-oss device=/dev/dsp1 record=0 sink_name=output2
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add-autoload-sink combined module-combine master=output slaves=output2 sink_name=combined
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add-autoload-source input module-alsa-source device=hw:1,0 source_name=input
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# Load several protocols
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load-module module-esound-protocol-unix
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load-module module-simple-protocol-tcp
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load-module module-native-protocol-unix
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load-module module-cli-protocol-unix
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# Make some devices default
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set-default-sink combined
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set-default-source input
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# Don't fail if the audio files referred to below don't exist
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.nofail
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# Load an audio to the sample cache for usage with module-x11-bell
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load-sample-lazy /usr/share/sounds/KDE_Notify.wav x11-bell
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load-module module-x11-bell sample=x11-bell
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# Play a welcome sound
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play-file /usr/share/sounds/startup3.wav combined
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</pre>
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<hr/>
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<address class="grey">Lennart Poettering <@PACKAGE_BUGREPORT@>, April 2006</address>
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<div class="grey"><i>$Id$</i></div>
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</body> </html>
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