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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-D53A00E4-CF37-5F11-8D15-C5ECCCE64597" xml:lang="en"><title>Vibra
+API</title><abstract><shortdesc>Vibra API provides the functionality to control the device
+vibra, which is accessed using the <apiname>CHWRMVibra</apiname> instance.
+It also provides methods to retrieve the current settings of the vibration
+feature in the user profile and the current status of the vibra. It uses synchronous
+method calls which block the client application until a response is received
+from the plug-in. </shortdesc> <p>Vibra API also allows the client to request
+for tactile vibration feedback. </p> </abstract><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>The API consists of <codeph>CHWRMVibra</codeph>,<codeph>MHWRMVibraObserver</codeph> and <codeph>MHWRMVibraFeedbackObserver</codeph> classes. </p>
+<p>It provides the following fields: </p>
+<table id="GUID-65DF6175-8150-5F3D-BF8F-D7D9E1105C1A">
+<tgroup cols="3"><colspec colname="col0"/><colspec colname="col1"/><colspec colname="col2"/>
+<thead>
+<row>
+<entry valign="top"><p> <b>Fields</b>  </p> </entry>
+<entry valign="top"><p> <b>Values </b>  </p> </entry>
+<entry valign="top"><p> <b>Descriptions</b>  </p> </entry>
+</row>
+</thead>
+<tbody>
+<row>
+
+<entry><p> <codeph>KHWRMVibraMinIntensity</codeph>  </p> </entry>
+<entry><p>-100 </p> </entry>
+<entry><p>Minimum allowed intensity setting for vibra. </p> </entry>
+</row>
+<row>
+<entry><p> <codeph>KHWRMVibraMinPulseIntensity</codeph>  </p> </entry>
+<entry><p>1</p> </entry>
+<entry><p>Minimum allowed intensity setting for vibra pulse. </p> </entry>
+</row>
+<row>
+<entry><p> <codeph>KHWRMVibraMaxIntensity</codeph>  </p> </entry>
+<entry><p>100</p> </entry>
+<entry><p>Maximum allowed intensity setting for vibra. </p> </entry>
+</row>
+<row>
+<entry><p> <codeph>KHWRMVibraMaxDuration</codeph>  </p> </entry>
+<entry><p>(<codeph>KMaxTInt</codeph>/1000)-1 </p> </entry>
+<entry><p>Maximum allowed duration value in milliseconds. </p> </entry>
+</row>
+<row>
+<entry><p> <codeph>KHWRMVibraInfiniteDuration</codeph>  </p> </entry>
+<entry><p>0</p> </entry>
+<entry><p>Specifies that vibrating must continue for maximum vibrating time
+supported by device if vibrating is not explicitly stopped. </p> </entry>
+</row>
+</tbody>
+</tgroup>
+</table>
+<section><title> Observer</title> <p>A separate callback interface <xref href="GUID-68D63D0A-4CC6-34A6-AF5B-BB59AC96625E.dita"><apiname>MHWRMVibraObserver</apiname></xref> for status reporting is also
+used. The client creates an instance of <xref href="GUID-68D63D0A-4CC6-34A6-AF5B-BB59AC96625E.dita"><apiname>CHWRMVibra</apiname></xref> using <xref href="GUID-68D63D0A-4CC6-34A6-AF5B-BB59AC96625E.dita"><apiname>NewL()</apiname></xref>. If the client requires the status information,
+it must provide a callback pointer of the <xref href="GUID-68D63D0A-4CC6-34A6-AF5B-BB59AC96625E.dita"><apiname>MHWRMVibraObserver</apiname></xref> implementing
+class for the <xref href="GUID-68D63D0A-4CC6-34A6-AF5B-BB59AC96625E.dita"><apiname>NewL()</apiname></xref> method. </p> <fig id="GUID-95D74CC2-CEDD-569B-8B34-A47FDA4F8DE0">
+<title>              Vibra API Interfaces            </title>
+<image href="GUID-DC44DCFC-8549-5CDE-B6DA-F5FD73E2D9FC_d0e110354_href.jpg" placement="inline"/>
+</fig> </section>
+<section><title>Tactile vibration feedback</title> <p>Tactile vibration is
+used in many touch screen devices to provide vibration feedback to the user
+through display surface. </p> <p>The clients can specify the intensity and
+duration of the feedback pulse, and receive notifications when the tactile
+feedback settings changes in the user profile through <xref href="GUID-68D63D0A-4CC6-34A6-AF5B-BB59AC96625E.dita"><apiname>MHWRMVibraFeedbackObserver</apiname></xref> class. </p> <p> <b> Note</b>: The tactile feedback functionality is only available to the clients configured
+at the firmware build time (Symbian platform licensees). </p> <table id="GUID-D75949EB-BC44-4120-825B-8B905562777D"><title>Definitions</title>
+<tgroup cols="2"><colspec colname="COLSPEC0" colwidth="0.42*"/><colspec colname="COLSPEC1" colwidth="1.58*"/>
+<tbody>
+<row>
+<entry><p>Vibra frozen state </p> </entry>
+<entry><p>Whenever vibra is released, its current state is stored as frozen
+state. On next reserve, the user can specify that the frozen state be restored. </p> </entry>
+</row>
+<row>
+<entry><p>Vibra virtual state </p> </entry>
+<entry><p>Reserves the specified resource. If reservation is not suspended,
+then actual vibra is also set to the same state. If reservation is suspended,
+actual vibra is not affected by any control methods.</p> </entry>
+</row>
+</tbody>
+</tgroup>
+</table></section>
+</conbody></concept>
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