<?xml version="1.0" ?>
<node name="/Channel_Interface_DTMF" xmlns:tp="http://telepathy.freedesktop.org/wiki/DbusSpec#extensions-v0">
  <tp:copyright>Copyright (C) 2005, 2006 Collabora Limited</tp:copyright>
  <tp:copyright>Copyright (C) 2005, 2006 Nokia Corporation</tp:copyright>
  <tp:copyright>Copyright (C) 2006 INdT</tp:copyright>
  <tp:license xmlns="http://www.w3.org/1999/xhtml">
    <p>This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.</p>

<p>This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.</p>

<p>You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.</p>
  </tp:license>
  <interface name="org.freedesktop.Telepathy.Channel.Interface.DTMF">
    <tp:requires interface="org.freedesktop.Telepathy.Channel.Type.StreamedMedia"/>

    <method name="StartTone" tp:name-for-bindings="Start_Tone">
      <arg direction="in" name="Stream_ID" type="u" tp:type="Stream_ID">
        <tp:docstring>A stream ID as defined in the StreamedMedia channel type.</tp:docstring>
      </arg>
      <arg direction="in" name="Event" type="y" tp:type="DTMF_Event">
        <tp:docstring>A numeric event code from the DTMF_Event enum.</tp:docstring>
      </arg>
      <tp:docstring>
        Start sending a DTMF tone on this stream. Where possible, the tone
        will continue until <tp:member-ref>StopTone</tp:member-ref> is called.
        On certain protocols, it may
        only be possible to send events with a predetermined length. In this
        case, the implementation may emit a fixed-length tone, and the StopTone
        method call should return NotAvailable.
      </tp:docstring>
      <tp:possible-errors>
        <tp:error name="org.freedesktop.Telepathy.Error.NetworkError" />
        <tp:error name="org.freedesktop.Telepathy.Error.InvalidArgument">
          <tp:docstring>
            The given stream ID was invalid.
          </tp:docstring>
        </tp:error>
        <tp:error name="org.freedesktop.Telepathy.Error.NotAvailable">
          <tp:docstring>
            The requested event is not available on this stream.
          </tp:docstring>
        </tp:error>
      </tp:possible-errors>
    </method>

    <method name="StopTone" tp:name-for-bindings="Stop_Tone">
      <arg direction="in" name="Stream_ID" type="u" tp:type="Stream_ID">
        <tp:docstring>A stream ID as defined in the StreamedMedia channel type.</tp:docstring>
      </arg>
      <tp:docstring>
        Stop sending any DTMF tone which has been started using the
        <tp:member-ref>StartTone</tp:member-ref>
        method. If there is no current tone, this method will do nothing.
      </tp:docstring>
      <tp:possible-errors>
        <tp:error name="org.freedesktop.Telepathy.Error.NetworkError" />
        <tp:error name="org.freedesktop.Telepathy.Error.InvalidArgument">
          <tp:docstring>
            The given stream ID was invalid.
          </tp:docstring>
        </tp:error>
        <tp:error name="org.freedesktop.Telepathy.Error.NotAvailable">
          <tp:docstring>
            Continuous tones are not supported by this stream.
          </tp:docstring>
        </tp:error>
      </tp:possible-errors>
    </method>

    <tp:enum name="DTMF_Event" type="y">
      <tp:enumvalue suffix="Digit_0" value="0">
        <tp:docstring>0</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Digit_1" value="1">
        <tp:docstring>1</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Digit_2" value="2">
        <tp:docstring>2</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Digit_3" value="3">
        <tp:docstring>3</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Digit_4" value="4">
        <tp:docstring>4</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Digit_5" value="5">
        <tp:docstring>5</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Digit_6" value="6">
        <tp:docstring>6</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Digit_7" value="7">
        <tp:docstring>7</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Digit_8" value="8">
        <tp:docstring>8</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Digit_9" value="9">
        <tp:docstring>9</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Asterisk" value="10">
        <tp:docstring>*</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Hash" value="11">
        <tp:docstring>#</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Letter_A" value="12">
        <tp:docstring>A</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Letter_B" value="13">
        <tp:docstring>B</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Letter_C" value="14">
        <tp:docstring>C</tp:docstring>
      </tp:enumvalue>
      <tp:enumvalue suffix="Letter_D" value="15">
        <tp:docstring>D</tp:docstring>
      </tp:enumvalue>
    </tp:enum>

    <tp:docstring xmlns="http://www.w3.org/1999/xhtml">
      An interface that gives a Channel the ability to send DTMF events over
      audio streams which have been established using the StreamedMedia channel
      type. The event codes used are in common with those defined in <a
      href="http://www.rfc-editor.org/rfc/rfc4733.txt">RFC4733</a>, and are
      listed in the <tp:type>DTMF_Event</tp:type> enumeration.
    </tp:docstring>

  </interface>
</node>
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