imagehandlingutilities/thumbnailmanager/thumbnailserver/src/thumbnaildecodetask.cpp
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/*
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* Copyright (c) 2006-2007 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:  Task for generating new thumbnails
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 *
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*/
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#include <e32base.h>
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#include <fbs.h>
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#include <thumbnailmanager.h>
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#include "thumbnaildecodetask.h"
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#include "thumbnailprovider.h"
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#include "thumbnailserver.h"
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#include "thumbnaillog.h"
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#include "thumbnailpanic.h"
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#include "OstTraceDefinitions.h"
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#ifdef OST_TRACE_COMPILER_IN_USE
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#include "thumbnaildecodetaskTraces.h"
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#endif
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// ======== MEMBER FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// CThumbnailDecodeTask::CThumbnailDecodeTask()
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// C++ default constructor can NOT contain any code, that might leave.
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// ---------------------------------------------------------------------------
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//
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CThumbnailDecodeTask::CThumbnailDecodeTask( CThumbnailTaskProcessor& aProcessor, 
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        CThumbnailServer& aServer, TDesC8* aBuffer, TInt aPriority, TDisplayMode aDisplayMode): CThumbnailTask( aProcessor,
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    aPriority ), iServer( aServer ), iBuffer(aBuffer), iDisplayMode(aDisplayMode)
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    {
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    TN_DEBUG3( "CThumbnailDecodeTask(0x%08x)::CThumbnailDecodeTask() aDisplayMode = %d", this
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        , iDisplayMode);
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    OstTrace1( TRACE_NORMAL, CTHUMBNAILDECODETASK_CTHUMBNAILDECODETASK, "CThumbnailDecodeTask::CThumbnailDecodeTask;iDisplayMode=%u", iDisplayMode );
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    OstTrace1( TRACE_NORMAL, DUP1_CTHUMBNAILDECODETASK_CTHUMBNAILDECODETASK, "CThumbnailDecodeTask::CThumbnailDecodeTask;this=%o", this );
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    }
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// ---------------------------------------------------------------------------
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// CThumbnailDecodeTask::~CThumbnailDecodeTask()
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// Destructor.
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// ---------------------------------------------------------------------------
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//
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CThumbnailDecodeTask::~CThumbnailDecodeTask()
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    {
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    TN_DEBUG2( "CThumbnailDecodeTask(0x%08x)::~CThumbnailDecodeTask()", this );
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    OstTrace0( TRACE_NORMAL, DUP2_CTHUMBNAILDECODETASK_CTHUMBNAILDECODETASK, "CThumbnailDecodeTask::~CThumbnailDecodeTask" );
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0
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    if ( iProvider )
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        {
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        iProvider->CancelGetThumbnail();
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        } 
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    iProvider = NULL;
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    delete iBuffer;
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    iBuffer = NULL;
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    }
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// ---------------------------------------------------------------------------
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// CThumbnailDecodeTask::StartL()
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// ---------------------------------------------------------------------------
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//
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void CThumbnailDecodeTask::StartL()
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    {
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    TN_DEBUG2( "CThumbnailDecodeTask(0x%08x)::StartL()", this );
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    OstTrace1( TRACE_NORMAL, CTHUMBNAILDECODETASK_STARTL, "CThumbnailDecodeTask::StartL;this=%o", this );
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    CThumbnailTask::StartL();
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    const TPtrC8 mimeType = KJpegMime();
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    iProvider = iServer.ResolveProviderL( mimeType );
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    TN_DEBUG3( "CThumbnailDecodeTask(0x%08x) -- provider UID 0x%08x", this,
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        iProvider->Uid());
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    OstTrace1( TRACE_NORMAL, DUP1_CTHUMBNAILDECODETASK_STARTL, "CThumbnailDecodeTask::StartL;this=%o", this );
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    __ASSERT_DEBUG(( iProvider ), ThumbnailPanic( EThumbnailNullPointer ));
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    iProvider->CancelGetThumbnail();
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    iProvider->Reset();
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    iProvider->SetObserver( *this );
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    iProvider->GetThumbnailL( iServer.Fs(), *iBuffer );
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    }
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// ---------------------------------------------------------------------------
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// CThumbnailDecodeTask::RunL()
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// ---------------------------------------------------------------------------
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//
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void CThumbnailDecodeTask::RunL()
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    {
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    // No implementation required
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    TN_DEBUG2( "CThumbnailDecodeTask(0x%08x)::RunL()", this );
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    OstTrace1( TRACE_NORMAL, CTHUMBNAILDECODETASK_RUNL, "CThumbnailDecodeTask::RunL;this=%o", this );
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    }
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// ---------------------------------------------------------------------------
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// CThumbnailDecodeTask::DoCancel()
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// ---------------------------------------------------------------------------
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//
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void CThumbnailDecodeTask::DoCancel()
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    {
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    TN_DEBUG2( "CThumbnailDecodeTask(0x%08x)::DoCancel()", this );
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    OstTrace1( TRACE_NORMAL, CTHUMBNAILDECODETASK_DOCANCEL, "CThumbnailDecodeTask::DoCancel;this=%o", this );
0
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    if ( iProvider )
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        {
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        iProvider->CancelGetThumbnail();
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        }
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    }
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   128
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   129
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//
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// ---------------------------------------------------------------------------
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// Thumbnail provider observer callback to notify the server when
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// thumbnail has been generated.
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// ---------------------------------------------------------------------------
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//
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void CThumbnailDecodeTask::ThumbnailProviderReady( const TInt aError,
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    CFbsBitmap* aBitmap, const TSize& aOriginalSize, const TBool /*aEXIF*/, const TBool /*aPortrait*/ )
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    {
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    TN_DEBUG4( "CThumbnailDecodeTask(0x%08x)::ThumbnailProviderReady(aError=%d, aBitmap=0x%08x)", 
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               this, aError, aBitmap );
39
hgs
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    OstTrace1( TRACE_NORMAL, CTHUMBNAILDECODETASK_THUMBNAILPROVIDERREADY, "CThumbnailDecodeTask::ThumbnailProviderReady;this=%o", this );
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    OstTrace1( TRACE_NORMAL, DUP1_CTHUMBNAILDECODETASK_THUMBNAILPROVIDERREADY, "CThumbnailDecodeTask::ThumbnailProviderReady;aError=%d", aError );
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    OstTrace1( TRACE_NORMAL, DUP2_CTHUMBNAILDECODETASK_THUMBNAILPROVIDERREADY, "CThumbnailDecodeTask::ThumbnailProviderReady;aBitmap=%o", aBitmap );
0
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    iOriginalSize = aOriginalSize;
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    if ( aError )
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        {
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        delete aBitmap;
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        aBitmap = NULL;
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        Complete( aError );
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        return;
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        }
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    if( !aBitmap )
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        {
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        Complete( KErrGeneral );
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        return;
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        }
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14
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    if ( ClientThreadAlive() )
0
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       {
15
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       // pass bitmap handle to client
0
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       TThumbnailRequestParams& params = iParamsBuf();
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       TInt ret = iMessage.Read( 0, iParamsBuf );
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       if(ret == KErrNone )
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           {
15
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           params.iBitmapHandle = aBitmap->Handle();
0
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           ret = iMessage.Write( 0, iParamsBuf );
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           }
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15
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       // add bitmap to pool
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       TRAPD(err, iServer.AddBitmapToPoolL( iRequestId.iSession, aBitmap, iRequestId ) );
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       if (err != KErrNone)
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           {
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           Complete( err );
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           delete aBitmap;
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           aBitmap = NULL;
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           }
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       else
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           {
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           aBitmap = NULL; // Server owns the bitmap now
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           // Complete message
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           Complete( ret );
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           ResetMessageData();
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           }
0
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       }
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    else
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        {
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        delete aBitmap;
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        aBitmap = NULL;
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        }
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    }
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   196