Symbian3/SDK/Source/GUID-E9B97347-D703-4758-A5CE-423A6CB4E474.dita
author Graeme Price <GRAEME.PRICE@NOKIA.COM>
Fri, 15 Oct 2010 14:32:18 +0100
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Initial contribution of the Adaptation Documentation.
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<?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-E9B97347-D703-4758-A5CE-423A6CB4E474" xml:lang="en"><title>Embedding
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camera applications</title><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>In your applications, you can embed other applications that provide services,
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such as image capture and voice recording. For example, a multimedia messaging
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service (MMS) editor could embed the camera application to capture images
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and insert them in multimedia messages.</p>
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<p>Use the New File Service Client API to create a service client.</p>
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<note><p>The binary compatibility of the API plug-ins is not guaranteed either
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between platform versions or within a platform version. Test your application
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on each device model that the application can be installed on to ensure the
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best possible user experience. To prevent application installation on other
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than tested devices, define the product IDs (also called manufacturer IDs)
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in the <xref href="GUID-7F1B2577-2FEF-45F9-B32F-745DFE0F0D95.dita">package file</xref>.
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For more information, see <xref href="jar:GUID-35228542-8C95-4849-A73F-2B4F082F0C44.jar!/sdk/doc_source/ToolsAndUtilities94/Installing-ref/PKG_format/PKG_dependency.html" format="application/java-archive">Hardware/UI platform dependency</xref>.</p></note>
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<section id="GUID-A7CFB0D3-0F64-4BCA-93F1-28D7F2F892A0"><title>To embed camera
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applications</title><ol>
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<li id="GUID-B945513D-1DBA-46A5-BE66-20F36EF8E4B4"><p>Use the <codeph>CNewFileServiceClient</codeph> method
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to create a new file service client. </p><codeblock xml:space="preserve">CNewFileServiceClient* fileClient = NewFileServiceFactory::NewClientL();
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CleanupStack::PushL( fileClient );
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</codeblock></li>
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<li id="GUID-3CADBF28-0A9F-44C4-B7AF-AF9628E8F659"><p>Create an array to hold
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the file names for the resulting files.</p><codeblock xml:space="preserve">CDesCArray* fileNames = new ( ELeave ) CDesCArrayFlat( 1 );
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CleanupStack::PushL( fileNames );
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</codeblock></li>
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<li id="GUID-1D168D25-1D05-4A19-9811-1DA4394F0B1E"><p>Use generic parameters
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to control the service.</p><codeblock xml:space="preserve">CAiwGenericParamList* paramList = CAiwGenericParamList::NewLC();</codeblock></li>
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<li id="GUID-B4CDA320-B9F5-47F6-828B-91EC5B8820ED"><p>Specify image resolution.
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The application matches the value that you enter to the closest resolution
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supported (in pixels). Use the value (0,0) for the default MMS resolution,
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which is the lowest quality.</p><codeblock xml:space="preserve">TSize resolution( 1600, 1200 ); // 2 megapixels
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</codeblock><p>If the device has two cameras, the camera available at the
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time of launching the service client is used. You cannot select whether to
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launch the primary or secondary camera. Users cannot switch from the primary
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camera to the secondary one after launching the service client. The secondary
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camera always uses a fixed resolution that you cannot specify.</p></li>
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<li id="GUID-DBB7629D-604E-40B7-8C2E-BA3D439C77F9"><p>Package the object.</p><codeblock xml:space="preserve">TPckgBuf&lt;TSize&gt; buffer( resolution );
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TAiwVariant resolutionVariant( buffer );
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TAiwGenericParam param( EGenericParamResolution, resolutionVariant );
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paramList-&gt;AppendL( param );
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</codeblock></li>
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<li id="GUID-206F9549-5A8E-42D1-841E-6DA9A28A061D"><p>Specify the application
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to launch. The application UID identifies the application to be started as
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a server application. </p><codeblock xml:space="preserve">const TUid KUidCamera = { 0x101F857A }; // Camera UID for S60 5th edition
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...
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TBool result = fileClient-&gt;NewFileL( KUidCamera, *fileNames, paramList,
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                               ENewFileServiceImage, EFalse );
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</codeblock></li>
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<li id="GUID-4C0A3DB0-F8AA-4E75-974E-2AA062268480"><p>Access the images. The <codeph>fileNames</codeph> array
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can hold more than one item.</p><codeblock xml:space="preserve">if ( result )
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    {
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    CEikonEnv::InfoWinL(_L("Success"),_L(""));
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    for(TInt i=0;iCount();i++)
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       {
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       TPtrC fileName=fileNames-&gt;MdcaPoint(i);
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       ...
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}
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else
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    {
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    CEikonEnv::InfoWinL(_L("Failed"),_L(""));
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    }
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CleanupStack::PopAndDestroy( fileClient );
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CleanupStack::PopAndDestroy( paramList );
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CleanupStack::PopAndDestroy( fileNames );</codeblock></li>
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</ol></section>
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</conbody></concept>