mtpdataproviders/mtpimagedp/src/cmtpimagedpgetthumb.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 16:03:15 +0300
branchRCL_3
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parent 11 4843bb5893b6
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child 47 63cf70d3ecd8
permissions -rw-r--r--
Revision: 201032 Kit: 201035
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// Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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/**
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 @file
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 @internalTechnology
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*/
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#include <bautils.h>  // FileExists
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#include <mtp/cmtpobjectmetadata.h>
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#include <mtp/mmtpdataproviderframework.h>
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#include <mtp/cmtptypeopaquedata.h>
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#include <thumbnailmanager.h>
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#include "cmtpimagedpgetthumb.h"
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#include "mtpimagedppanic.h"
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#include "mtpimagedputilits.h"
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#include "cmtpimagedpthumbnailcreator.h"
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#include "cmtpimagedpobjectpropertymgr.h"
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#include "cmtpimagedp.h"
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// Class constants.
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__FLOG_STMT(_LIT8(KComponent,"ImageDpGetThumb");)
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/**
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Two-phase construction method
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@param aPlugin	The data provider plugin
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@param aFramework	The data provider framework
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@param aConnection	The connection from which the request comes
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@return a pointer to the created request processor object
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*/     
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MMTPRequestProcessor* CMTPImageDpGetThumb::NewL(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection,CMTPImageDataProvider& aDataProvider)
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    {
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    CMTPImageDpGetThumb* self = new (ELeave) CMTPImageDpGetThumb(aFramework, aConnection,aDataProvider);
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop(self);
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    return self;
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    }
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/**
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Destructor
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*/	
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CMTPImageDpGetThumb::~CMTPImageDpGetThumb()
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    {
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    __FLOG(_L8(">> CMTPImageDpGetThumb::~CMTPImageDpGetThumb"));
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    delete iThumb;    
0
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    delete iObjectMeta;
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    __FLOG(_L8("<< CMTPImageDpGetThumb::~CMTPImageDpGetThumb"));
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    __FLOG_CLOSE;
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    }
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/**
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Standard c++ constructor
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*/	
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CMTPImageDpGetThumb::CMTPImageDpGetThumb(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection,CMTPImageDataProvider& aDataProvider) : 
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    CMTPRequestProcessor(aFramework, aConnection, 0, NULL),imgDp(aDataProvider)
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    {
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    }
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/**
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Second-phase constructor.
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*/        
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void CMTPImageDpGetThumb::ConstructL()
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    {
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    __FLOG_OPEN(KMTPSubsystem, KComponent);
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    __FLOG(_L8("CMTPImageDpGetThumb::ConstructL"));
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    iThumb = CMTPTypeOpaqueData::NewL();    
0
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    iObjectMeta = CMTPObjectMetaData::NewL();
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    __FLOG(_L8("CMTPImageDpGetThumb::ConstructL"));
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    }
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TMTPResponseCode CMTPImageDpGetThumb::CheckRequestL()
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    {
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    __FLOG(_L8(">> CMTPImageDpGetThumb::CheckRequestL"));
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    TMTPResponseCode result = MTPImageDpUtilits::VerifyObjectHandleL(iFramework, Request().Uint32(TMTPTypeRequest::ERequestParameter1), *iObjectMeta);
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    __FLOG(_L8("<< CMTPImageDpGetThumb::CheckRequestL"));
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    return result;	
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    }
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/**
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GetObject request handler
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*/
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void CMTPImageDpGetThumb::ServiceL()
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    {
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    __FLOG(_L8(">> CMTPImageDpGetThumb::ServiceL"));
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    TInt err = KErrNone;
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    //at first, try to query thumbnail from property manager
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    HBufC8* thumbnailData = imgDp.PropertyMgr().Thumbnail(iObjectMeta->Uint(CMTPObjectMetaData::EHandle));
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    if (thumbnailData == NULL)
0
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        {
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        __FLOG(_L8("CMTPImageDpGetThumb::ServiceL-  fail to query thumbnail from cache"));
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        TEntry fileEntry;
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        User::LeaveIfError(iFramework.Fs().Entry(iObjectMeta->DesC(CMTPObjectMetaData::ESuid), fileEntry));
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        CMTPImageDpThumbnailCreator* tnc = imgDp.ThumbnailManager();
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        if(tnc != NULL)
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            {
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            tnc->GetThumbMgr()->SetFlagsL(CThumbnailManager::EDefaultFlags);
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            if(fileEntry.FileSize() > KFileSizeMax)
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                {
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                __FLOG(_L8(">> CMTPImageDpGetThumb::ServiceL, fileEntry.FileSize() > KFileSizeMax"));
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                tnc->GetThumbMgr()->SetFlagsL(CThumbnailManager::EDoNotCreate);
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                }
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            tnc->GetThumbnailL(iObjectMeta->DesC(CMTPObjectMetaData::ESuid), thumbnailData, err);
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            imgDp.PropertyMgr().StoreThunmnail(iObjectMeta->Uint(CMTPObjectMetaData::EHandle), thumbnailData);
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            }
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        //Transfer ownership of thumbnailData to Property Manager       
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        }
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    if(thumbnailData != NULL)
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        {
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        iThumb->Write(*thumbnailData);
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        }
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    SendDataL(*iThumb);
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    __FLOG(_L8("<< CMTPImageDpGetThumb::ServiceL"));
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    }
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TBool CMTPImageDpGetThumb::DoHandleCompletingPhaseL()
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    {
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    return CMTPRequestProcessor::DoHandleCompletingPhaseL();
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    }
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// End Of File