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

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     7     Nokia Corporation - initial contribution.

     8 Contributors: 

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    10 <!DOCTYPE concept

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

    12 <concept id="GUID-0297CAF5-4EB7-5E84-8A8C-8758D6F3B75F" xml:lang="en"><title> Data

    13 Reception Setup</title><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <p>This topic gives information about preparing a <xref href="GUID-617CD367-CF68-3932-8E77-669820A7B9AF.dita"><apiname>RDvbhReceiver</apiname></xref> for

    15 Data Reception. </p>

    16 <section><title>Purpose</title> <p>The purpose of this concept is to set up

    17 a <xref href="GUID-617CD367-CF68-3932-8E77-669820A7B9AF.dita"><apiname>RDvbhReceiver</apiname></xref> instance for data reception.</p> </section>

    18 <section><title>Required background</title><p>IP data is delivered to mobile

    19 TV middleware through a single <xref href="GUID-617CD367-CF68-3932-8E77-669820A7B9AF.dita"><apiname>RDvbhReceiver</apiname></xref> instance through

    20 a realization of <xref href="GUID-A02A8090-2D79-3BDC-9B97-91CEA6472C60.dita"><apiname>MDvbhDataObserver</apiname></xref> supplied by the middleware. </p></section>

    21 <section><title>Introduction</title><p>The <xref href="GUID-A02A8090-2D79-3BDC-9B97-91CEA6472C60.dita"><apiname>MDvbhDataObserver</apiname></xref> interface

    22 class is used to provide the callback mechanism for IP data reception. </p></section>

    23 <section><title>Using data reception setup</title> <p>The following task is

    24 performed. </p> <ul>

    25 <li id="GUID-4E7DBA25-2497-5FAD-8DF6-E354B9234D09"><p><xref href="GUID-82052A09-B380-4C93-8828-2D4E53C8C110.dita">Registering

    26 a Data Observer</xref>.</p> </li>

    27 </ul> </section>

    28 <section><title>Example for the data reception set-up</title><codeblock id="GUID-16733006-AE12-51C5-906E-2FB61B4FFB07" xml:space="preserve">// Context: The following takes place in some method of an object that

    29 // implements MDvbhDataObserver. Its member iReceiver is an RDvbhReceiver

    30 // that has previously been opened.

    31 

    32 TInt result = iReceiver.ReceiveIpData(*this);

    33 if (result != KErrNone)

    34     {

    35     //Take some action.

    36     return HandleReceiveIpDataError(result);

    37     }

    38 

    39 // The receiver is now set up for data reception, so that Later on,

    40 // whenever the receiver filters an IP packet, the object’s

    41 // DvbhPacketReceived() will be called.

    42 </codeblock></section>

    43 <section><title>To Cancel IP Data Packet Reception</title> <p>When mobile

    44 TV middleware does not wish to receive IP data through an observer it has

    45 previously registered with <xref href="GUID-617CD367-CF68-3932-8E77-669820A7B9AF.dita#GUID-617CD367-CF68-3932-8E77-669820A7B9AF/GUID-B0D7B27B-7952-3212-90CA-67B08D52AB7B"><apiname>RDvbhReceiver::ReceiveIPData()</apiname></xref>,

    46 it does not registers the observer by calling <xref href="GUID-617CD367-CF68-3932-8E77-669820A7B9AF.dita#GUID-617CD367-CF68-3932-8E77-669820A7B9AF/GUID-F664F749-DA0F-3584-BBA5-0C19FCD8374C"><apiname>RDvbhReceiver::CancelReceiveIPData()</apiname></xref>.</p> </section>

    47 </conbody><related-links>

    48 <link href="GUID-3C9BE2FF-8D5C-51D0-8BC1-BED7BC1288BA.dita"><linktext>Turn On Broadcast

    49 Receiver Tutorial</linktext></link>

    50 <link href="GUID-2C8BE998-BCCE-5A06-AFC1-4B611D9233AB.dita"><linktext>Turn Off

    51 Broadcast Receiver Tutorial</linktext></link>

    52 <link href="GUID-567585CC-26EC-553D-99D5-D3C178C455F6.dita"><linktext>DVB-H Signal

    53 Scanning Tutorial</linktext></link>

    54 <link href="GUID-743D3117-095B-58D5-947D-A8713475C9A5.dita"><linktext>Tuning IP

    55 Platform Tutorial</linktext></link>

    56 <link href="GUID-F5FE22F3-B7C4-50B3-9B36-5CB8BC1BA18A.dita"><linktext>Receiving

    57 Broadcast Data Tutorial</linktext></link>

    58 </related-links></concept>