servicewidget/servicewidgetdatapublisher/src/cservicewidgetimagedecoder.cpp
changeset 0 5e5d6b214f4f
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     1 /*
       
     2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  presene avatar decoder handler 
       
    15  *                
       
    16  *
       
    17 */
       
    18 
       
    19  
       
    20 #include "cservicewidgetimagedecoder.h"
       
    21 #include "servicewidgetcpglobals.h"
       
    22 #include <cbsbitmap.h>
       
    23 #include <ImageConversion.h> 
       
    24 
       
    25 const TInt KMimeLength = 16;
       
    26 // ---------------------------------------------------------------------------
       
    27 // CServiceWidgetImageDecoder::NewL
       
    28 // Two-phase construction
       
    29 // ---------------------------------------------------------------------------
       
    30 //
       
    31 CServiceWidgetImageDecoder* CServiceWidgetImageDecoder::NewL(MServiceWidgetImagerDecodeObserver& aObserver )
       
    32     {
       
    33     CServiceWidgetImageDecoder* self = new (ELeave) CServiceWidgetImageDecoder(aObserver);
       
    34     CleanupStack::PushL(self);
       
    35     self->ConstructL();
       
    36     CleanupStack::Pop(self);
       
    37     return self;
       
    38     }
       
    39 
       
    40 // ---------------------------------------------------------------------------
       
    41 // CServiceWidgetImageDecoder::CServiceWidgetImageDecoder
       
    42 // First phase (C++) constructor
       
    43 // ---------------------------------------------------------------------------
       
    44 //
       
    45 CServiceWidgetImageDecoder::CServiceWidgetImageDecoder(MServiceWidgetImagerDecodeObserver& aObserver ) 
       
    46 	: 
       
    47 	CActive( CActive::EPriorityStandard ), 
       
    48 	iObserver(aObserver)
       
    49     { 
       
    50     CActiveScheduler::Add(this); 
       
    51     }
       
    52 
       
    53 // ---------------------------------------------------------------------------
       
    54 // CServiceWidgetImageDecoder::ConstructL
       
    55 // ConstructL, second phase constructor
       
    56 // ---------------------------------------------------------------------------
       
    57 //
       
    58 void CServiceWidgetImageDecoder::ConstructL()
       
    59     {
       
    60     User::LeaveIfError( iFs.Connect() );
       
    61     }
       
    62 
       
    63 // ---------------------------------------------------------------------------
       
    64 // CServiceWidgetImageDecoder::~CServiceWidgetImageDecoder
       
    65 // ---------------------------------------------------------------------------
       
    66 //
       
    67 CServiceWidgetImageDecoder::~CServiceWidgetImageDecoder()
       
    68     {
       
    69     DoCancel();
       
    70     if (iImgDecoder)
       
    71         {
       
    72         delete iImgDecoder;
       
    73         iImgDecoder = NULL;
       
    74         }
       
    75     if (iBitmap)
       
    76         {
       
    77         delete iBitmap;
       
    78         iBitmap = NULL;
       
    79         }
       
    80     if (iBitmapData)
       
    81         {
       
    82         delete iBitmapData;
       
    83         iBitmapData = NULL;
       
    84         }
       
    85     iFs.Close();
       
    86     }
       
    87 
       
    88 // ---------------------------------------------------------------------------
       
    89 // CServiceWidgetImageDecoder::StartDecodingL
       
    90 // Starts the decoding process
       
    91 // ---------------------------------------------------------------------------
       
    92 //
       
    93 void CServiceWidgetImageDecoder::StartDecodingL(const TDesC8& aBitmapData )
       
    94     {
       
    95     iBitmapData = aBitmapData.AllocL();
       
    96     
       
    97     iMimeType = HBufC8::NewL( KMimeLength);
       
    98     TPtr8 mimePtr = iMimeType->Des();
       
    99     CImageDecoder::GetMimeTypeDataL( *iBitmapData , mimePtr );
       
   100      
       
   101     iImgDecoder = CImageDecoder::DataNewL( iFs, *iBitmapData );
       
   102     TFrameInfo info = iImgDecoder->FrameInfo();
       
   103     iBitmap = new ( ELeave ) CFbsBitmap;
       
   104     User::LeaveIfError( iBitmap->Create( info.iOverallSizeInPixels, info.iFrameDisplayMode ));
       
   105     
       
   106     iNextOperationId = EOpEncodeBitmap;
       
   107     iStatus = KRequestPending;
       
   108     iImgDecoder->Convert( &iStatus, *iBitmap );
       
   109     SetActive();
       
   110     }
       
   111 
       
   112 // ---------------------------------------------------------------------------
       
   113 // CServiceWidgetImageDecoder::RunL
       
   114 // Called by the active object framework when the decoding (request) is
       
   115 // completed.
       
   116 // ---------------------------------------------------------------------------
       
   117 //
       
   118 void CServiceWidgetImageDecoder::RunL() 
       
   119 	{
       
   120 	User::LeaveIfError( iStatus.Int() );
       
   121 	
       
   122 	switch( iNextOperationId )
       
   123 		{
       
   124 		case EOpEncodeBitmap: 
       
   125 			{
       
   126 			StartEncodingL();
       
   127 			break;	
       
   128 			}
       
   129 		case EOpComplete: 
       
   130 			{
       
   131 			iObserver.HandlerDecodeCompleteL();
       
   132 			break;	
       
   133 			}
       
   134 		}
       
   135    }
       
   136 
       
   137 // ---------------------------------------------------------------------------
       
   138 // CServiceWidgetImageDecoder::DoCancel
       
   139 // Called when the decoding (request) is cancelled for some reason.
       
   140 // ---------------------------------------------------------------------------
       
   141 //
       
   142 void CServiceWidgetImageDecoder::DoCancel()
       
   143     { 
       
   144     iImgDecoder->Cancel(); 
       
   145     }
       
   146 // ---------------------------------------------------------------------------
       
   147 // CServiceWidgetImageDecoder::StartEncodingL
       
   148 // Called when the decoding (request) is cancelled for some reason.
       
   149 // ---------------------------------------------------------------------------
       
   150 //
       
   151 void CServiceWidgetImageDecoder::StartEncodingL()
       
   152     { 
       
   153  	iImageEncoder = CImageEncoder::FileNewL(iFs, 
       
   154  											KSeTAvatarPath, 
       
   155  											*iMimeType, 
       
   156  											CImageEncoder::EOptionExtUseWithSetThumbnail );
       
   157     iImageEncoder->SetThumbnail(ETrue);
       
   158     
       
   159     iNextOperationId = EOpComplete;
       
   160     iStatus = KRequestPending;
       
   161     iImageEncoder->Convert( &iStatus, *iBitmap );
       
   162     SetActive();
       
   163     }
       
   164 
       
   165 // end of file