Rivendellaudio/docs/apis/catchd.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<article xmlns="http://docbook.org/ns/docbook" version="5.0">
<info>
  <title>Rivendell RDCatch Monitor Protocol</title>
  <author>
    <personname>
      <firstname>Fred</firstname>
      <surname>Gleason</surname>
      <email>fredg@paravelsystems.com</email>
    </personname>
  </author>
</info>

<sect1 xml:id="overview">
  <title>Overview</title>
  <para>
    This defines the IP protocol used for communication between different
    modules of Rivendell and the
    <command>rdcatchd</command><manvolnum>8</manvolnum> daemon.
  </para>
  <para>
    Connection to ripcd is by means of a TCP SOCK_STREAM connection to TCP
    port <userinput>6006</userinput>. The format of a message is as follows:
  </para>
  <para>
    <replaceable>cmd-code</replaceable> [<replaceable>arg</replaceable>] [<replaceable>...</replaceable>]!
  </para>
  <variablelist>
    <varlistentry>
      <term>
	<replaceable>cmd-code</replaceable>
      </term>
      <listitem>
	<para>
	  A two letter command code, describing the generic action to be
	  performed
	</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term>
	<replaceable>arg</replaceable>
      </term>
      <listitem>
	<para>
	  Zero or more arguments, delimited by spaces or, if the last
	  argument, by ! (see below)
	</para>
      </listitem>
    </varlistentry>
    <varlistentry>
      <term>
	!
      </term>
      <listitem>
	<para>
	  The ASCII character  33, indicating the end of the command sequence.
	</para>
      </listitem>
    </varlistentry>
  </variablelist>
</sect1>

<sect1 xml:id="sect.unprivileged_commands">
  <title>Unprivileged Commands</title>
  <para>
    No authentication is required to execute these.
  </para>
</sect1>

<sect1 xml:id="sect.privileged_commands">
  <title>Privileged Commands</title>
  <para>
     A connection must be authenticated before these can be executed.
  </para>

  <sect2 xml:id="sect.privileged_commands.enable_metering">
    <title>Enable Metering</title>
    <para>
      Enable/Disable Audio Metering
    </para>
    <para>
      <userinput>RM <replaceable>state</replaceable>!</userinput>
    </para>
    <variablelist>
      <varlistentry>
	<term><replaceable>state</replaceable></term>
	<listitem>
	  <para>
	    <computeroutput>1</computeroutput> = Enabled,
	    <computeroutput>0</computeroutput> = Disabled.
	  </para>
	</listitem>
      </varlistentry>
    </variablelist>
    <para>
      When metering is active, meter data packets will be periodically sent,
      as follows:
    </para>
    <para>
      <computeroutput>RM <replaceable>deck</replaceable>
      <replaceable>chan</replaceable>
      <replaceable>level</replaceable>!</computeroutput>
    </para>
    <variablelist>
      <varlistentry>
	<term><replaceable>deck</replaceable></term>
	<listitem>
	  <para>
	    Deck number
	  </para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term><replaceable>chan</replaceable></term>
	<listitem>
	  <para>
	    Channel, <computeroutput>0</computeroutput> = Left,
	    <computeroutput>1</computeroutput> = Right
	  </para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term><replaceable>level</replaceable></term>
	<listitem>
	  <para>
	    Left audio level, in 1/100 of dbFS
	  </para>
	</listitem>
      </varlistentry>
    </variablelist>
  </sect2>
  
  <sect2 xml:id="sect.privileged_commands.stop_deck">
    <title>Stop Deck</title>
    <para>
      Stop active event.
    </para>
    <para>
      <userinput>SR <replaceable>deck-num</replaceable>!</userinput>
    </para>
    <variablelist>
      <varlistentry>
	<term><replaceable>deck-num</replaceable></term>
	<listitem>
	  <para>
	    The number of the deck to stop.
	  </para>
	</listitem>
      </varlistentry>
    </variablelist>
  </sect2>

  <sect2 xml:id="sect.privileged_commands.reload_heartbeat_configuration">
    <title>Reload Heartbeat Configuration</title>
    <para>
      Reload the heartbeat configuration from the database.
    </para>
    <para>
      <userinput>RH!</userinput>
    </para>
  </sect2>

  <sect2 xml:id="sect.privileged_commands.input_monitor_state">
    <title>Input Monitor State</title>
    <para>
      Turn the input monitor on or off.
    </para>
    <para>
      <userinput>MN <replaceable>deck-num</replaceable>
      <replaceable>state</replaceable>!</userinput>
    </para>
    <variablelist>
      <varlistentry>
	<term><replaceable>deck-num</replaceable></term>
	<listitem>
	  <para>
	    The number of the deck.
	  </para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term><replaceable>state</replaceable></term>
	<listitem>
	  <para>
	    <computeroutput>1</computeroutput> = Enabled,
	    <computeroutput>0</computeroutput> = Disabled.
	  </para>
	</listitem>
      </varlistentry>
    </variablelist>
  </sect2>

  <sect2 xml:id="sect.privileged_commands.set_exit_code">
    <title>Set Exit Code</title>
    <para>
      Set the exit code of an event.
    </para>
    <para>
      <userinput>SC <replaceable>event-num</replaceable>
      <replaceable>code</replaceable>
      <replaceable>msg</replaceable>!</userinput>
    </para>
    <variablelist>
      <varlistentry>
	<term><replaceable>event-num</replaceable></term>
	<listitem>
	  <para>
	    The number of the event.
	  </para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term><replaceable>code</replaceable></term>
	<listitem>
	  <para>
	    The numeric code to set.
	  </para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term><replaceable>msg</replaceable></term>
	<listitem>
	  <para>
	    The text message to set.
	  </para>
	</listitem>
      </varlistentry>
    </variablelist>
  </sect2>



</sect1>

</article>