1 <?xml version="1.0" encoding="utf-8"?>

     2 <!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->

     3 <!-- This component and the accompanying materials are made available under the terms of the License 

     4 "Eclipse Public License v1.0" which accompanies this distribution, 

     5 and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->

     6 <!-- Initial Contributors:

     7     Nokia Corporation - initial contribution.

     8 Contributors: 

     9 -->

    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-3335663A-BC11-556E-B5A6-F83622AE34C3" xml:lang="en"><title>Audio Driver Porting

    13 Implementation Tutorial</title><shortdesc>Describes the steps to implement a physical device driver (PDD)

    14 for the Sound Driver.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

    15 <p id="GUID-C08202D0-5D57-5D29-B548-3BB17B9879D3"> The audio device driver

    16 implementation may provide for playback, recording, or both at the same time,

    17 but there are design considerations for each option. </p>

    18 </conbody><related-links>

    19 <link href="GUID-6D75968E-53CF-5436-8390-54CA12BCFDE9.dita#GUID-6D75968E-53CF-5436-8390-54CA12BCFDE9/GUID-C869F627-8218-5482-A04B-C6B74F62EFBF">

    20 <linktext>Concepts</linktext></link>

    21 </related-links></concept>