1 /*

     2 * Copyright (c) 2005 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:

    15 *

    16 */

    17 

    18 #ifndef CMIDIMAGEDECODER_H

    19 #define CMIDIMAGEDECODER_H

    20 

    21 #include <e32base.h>

    22 #include "lcdgr.h"

    23 

    24 #include <imageconversion.h>

    25 #include "CMIDBitmapImage.h"

    26 

    27 /**

    28  * Peered, probably singleton facade to image operations.

    29  *

    30  * Methods invoked by server on behalf of java threads:

    31  *  DecodeL

    32  *

    33  * expect java thread to block in waitForResult on peer's

    34  * condition variable.

    35  */

    36 NONSHARABLE_CLASS(CMIDImageDecoder)

    37         : public  CActive

    38         , public  MMIDImageDecoder

    39 {

    40 public:

    41     CMIDImageDecoder(RFs& aFileServer, TDisplayMode aDisplayMode);

    42     void ConstructL();

    43     ~CMIDImageDecoder();

    44 

    45     //

    46     // From MMIDImageDecoder

    47     //

    48     void AppendL(const TDesC8& aBuffer);

    49     void DecodeL(MMIDImageObserver* aObserver);

    50     void Dispose();

    51     MMIDBitmapImage* BitmapImage() const;

    52 

    53 private:

    54     void Complete(TInt aResult);

    55 

    56     void ConvertL();

    57     void CreateImageL();

    58 

    59 private:

    60     void RunL();

    61     TInt RunError(TInt);

    62     void DoCancel();

    63 

    64 private:

    65     enum TState

    66     {

    67         EStart,

    68         EOpenPending,

    69         EOpenComplete,

    70         EConvertPending,

    71         EComplete,

    72         ECancelled,

    73         EError=-1

    74     };

    75 

    76 private:

    77     CBufferedImageDecoder* iDecoder;

    78     TFrameInfo iFrameInfo;

    79     TState iState;

    80     CMIDBitmapImage* iBitmapImage;

    81     MMIDImageObserver* iCallback;

    82     RFs& iRFsSession;

    83     TDisplayMode                iDisplayMode;       // display mode from CMIDGraphicsFactory

    84 };

    85 

    86 #endif // CMIDIMAGEDECODER_H