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<concept xml:lang="en" id="GUID-0B24B36D-F4C5-508A-A65B-18E4E4C45C37"><title>Overview</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>This document introduces you to the Snapshot API. </p> <section><title>Purpose</title> <p>This API allows the client to request snapshot data in a specified image format for both still images and video. The client can specify the properties of the snapshot, such as size, background colour and position to be used. For example, details about whether the snapshot has been scaled. </p> <p><b>Snapshot API Library Details</b> </p> <p>The DLL that provides the functionality and the library to which your code must link is identified below. </p> <table id="GUID-2842BA4C-19BB-5641-9D92-C76DCA01AF00"><tgroup cols="3"><colspec colname="col0"/><colspec colname="col1"/><colspec colname="col2"/><thead><row><entry>DLL</entry> <entry>LIB</entry> <entry>Short Description</entry> </row> </thead> <tbody><row><entry><p> <xref href="GUID-74692ABF-B1FF-3ED6-BAED-BFBA2E89CFD1.dita"><apiname>ecamsnapshot.dll</apiname></xref>  </p> </entry> <entry><p> <xref href="GUID-645E6782-2610-3E79-A6A8-66A65C325E5F.dita"><apiname>euser.lib </apiname></xref>  </p> <p> <xref href="GUID-EA31C23F-8081-3A82-ABAA-168F970B5381.dita"><apiname>ecampluginsupport.lib </apiname></xref>  </p> <p> <xref href="GUID-AE2B970C-BCE8-3A17-AB2B-D5D51AB9F29E.dita"><apiname>ecamhistogram.lib </apiname></xref>  </p> </entry> <entry><p>These files are used for implementing the Snapshot APIs. </p> </entry> </row> </tbody> </tgroup> </table> </section> <section><title>Architectural Relationship</title> <p>This is part of the camera component. </p> </section> <section><title>Description</title> <p>The client application using this API should provide <codeph>McameraObserver2 </codeph> interface to be signalled, with event <codeph>KuidECamEventCameraSnapshot</codeph>, when snapshot data is available to be retrieved from the Ecam server. The client can then retrieve the snapshot data from the server. </p> </section> <section><title>Key Snapshot API Classes</title> <p>The key classes that make up the Snapshot API are as follows: </p> <ul><li id="GUID-5A404626-6602-5203-9735-37E1801BF2B0"><p> <xref href="GUID-021C509B-C821-3401-B2F4-DE7F52BB16D4.dita#GUID-021C509B-C821-3401-B2F4-DE7F52BB16D4/GUID-7DB06650-199E-3B00-A19A-1B48D671E46E"><apiname> CCamera::CCameraSnapshot </apiname></xref>  </p> <p>This class allows a client to request snapshot data in a specified image format for both still images and video. </p> <ul><li id="GUID-5A8FEB02-3EE7-5D68-9533-8E557B53B9F6"><p> <xref href="GUID-9749B0DF-B887-3798-9185-481DF8E2F7C2.dita#GUID-9749B0DF-B887-3798-9185-481DF8E2F7C2/GUID-AB58C0C8-2C2E-3A83-9022-F2E7A356F877"><apiname> CCameraSnapshot::SupportedFormats() </apiname></xref>  </p> <p>Gets a list of the camera formats for which the server supports snapshots. </p> </li> <li id="GUID-2A68E999-85DA-54C3-8FBF-5F0CA0C68A52"><p> <xref href="GUID-7DB06650-199E-3B00-A19A-1B48D671E46E.dita#GUID-7DB06650-199E-3B00-A19A-1B48D671E46E/GUID-0379784D-339B-3962-AD73-D2140518F39E"><apiname> CCamera::CCameraSnapshot::PrepareSnapshotL()

                     </apiname></xref>  </p> <p>Selects snapshot parameters. The following example shows how to do this: </p> <codeblock id="GUID-219108F7-389A-52C3-BBCF-91976A227B84" xml:space="preserve">// Gets the list of supported formats for snapshots

TUint suppFormats = snap->SupportedFormats();

CCamera::TFormat format = CCamera::EFormatJpeg;

if(suppFormats & format)

    {

    // Sets the properties of the snapshot data including 

    // background colour and the position of the snapshot  

    TSize sShotSize(90,50);

    TRgb bgrndColor(100,100,100);

    TBool aspectRatio = ETrue;

    TPoint orgPos(2,2);

    snap->PrepareSnapshotL(format, orgPos, sShotSize, bgrndColor,aspectRatio);

</codeblock> </li> <li id="GUID-9782C5D8-B43D-5506-8E49-B188AAC7D810"><p> <xref href="GUID-7DB06650-199E-3B00-A19A-1B48D671E46E.dita#GUID-7DB06650-199E-3B00-A19A-1B48D671E46E/GUID-BCC10C00-8EBC-3A9D-A399-7AAA13824E0D"><apiname>

                     CCamera::CCameraSnapshot::IsSnapshotActive()</apiname></xref>  </p> <p>Determines if the snapshot feature is active. </p> </li> <li id="GUID-8979122B-FEA6-54B8-80CC-1B439A2C60A5"><p> <xref href="GUID-7DB06650-199E-3B00-A19A-1B48D671E46E.dita#GUID-7DB06650-199E-3B00-A19A-1B48D671E46E/GUID-A6AD9EBB-CC0C-38B6-A2C4-8DADD2B4B729"><apiname> CCamera::CCameraSnapshot::StartSnapshot()

                     </apiname></xref>  </p> <p>Request notifications from the Camera. </p> </li> <li id="GUID-DF449145-0A9C-5B4B-8648-F9F29C543C1A"><p> <xref href="GUID-7DB06650-199E-3B00-A19A-1B48D671E46E.dita#GUID-7DB06650-199E-3B00-A19A-1B48D671E46E/GUID-40F3FFA0-736A-3E47-8BBA-ABAE8C44BD84"><apiname> CCamera::CCameraSnapshot::StopSnapshot() </apiname></xref> </p> <p>Stops receiving snapshot notifications. </p> </li> <li id="GUID-9B6FFA13-5523-5006-84DD-5F50E8DA6337"><p> <xref href="GUID-7DB06650-199E-3B00-A19A-1B48D671E46E.dita#GUID-7DB06650-199E-3B00-A19A-1B48D671E46E/GUID-FD954C76-308F-3405-A553-6D47D9C67D4D"><apiname> CCamera::CCameraSnapshot::SnapshotDataL()