<?xml version="1.0" encoding="utf-8"?>+
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->+
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<!-- This component and the accompanying materials are made available under the terms of the License +
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"Eclipse Public License v1.0" which accompanies this distribution, +
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->+
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<!-- Initial Contributors:+
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    Nokia Corporation - initial contribution.+
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Contributors: +
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-->+
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<!DOCTYPE concept+
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">+
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<concept id="GUID-8D8202BB-1070-5EE2-85C0-E37AABA67340-GENID-1-10-1-19-1-1-6-1-7-1-6-1-5-1" xml:lang="en"><title>MmfExCodec:+
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Multimedia Framework codec plug-in example</title><prolog><metadata><keywords/></metadata></prolog><conbody>+
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<section><title>Description</title> <p> <filepath>MmfExCodec</filepath> demonstrates+
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how to implement a codec plug-in for the Multimedia Framework. A codec converts+
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media data in one encoding into another encoding. The example converts audio+
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data encoded with PCM8 into PCM16. </p> <p>The program is an ECom plug-in+
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that implements the codec interface <codeph>CMMFCodec</codeph> by the class <codeph>CMMFExPcm8Pcm16Codec</codeph>.+
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When a client or media format requires a PCM8 to PCM16 codec, the Multimedia+
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Framework will instantiate a <codeph>CMMFExPcm8Pcm16Codec</codeph> object,+
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and call its <codeph>ProcessL()</codeph> member function to convert data supplied+
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a source buffer. As converting PCM8 into PCM16 only requires expanding each+
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byte in the source buffer into two bytes in the destination buffer, <codeph>CMMFExPcm8Pcm16Codec::ProcessL()</codeph> is+
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not very complex. </p> </section>+
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<section id="GUID-98F50184-E319-592D-A350-785799248B3C-GENID-1-10-1-19-1-1-6-1-7-1-6-1-5-1-2-2"><title>Download</title> <p>Click+
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on the following link to download the example: <xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/zips/guid-03d20b19-4462-40f7-bb6a-d91aaeea30b0.zip" scope="external"> MmfExCodec.zip file</xref></p><p>Click: <xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/guid-03d20b19-4462-40f7-bb6a-d91aaeea30b0.html" scope="peer">browse </xref> to view the example code. </p> </section>+
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<section><title>Class summary</title><p> <xref href="GUID-18F4082A-D301-3007-88DD-0E13AB81C74A.dita"><apiname>CMMFCodec </apiname></xref>  <xref href="GUID-AE26E6A4-C1AD-3B35-B5F7-CE0AB60169BB.dita"><apiname>CMMFDataBuffer </apiname></xref>  </p></section>+
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</conbody></concept>+
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