/*

* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:Buffer output for encoder.

*

*/

#ifndef CPOSLMBUFFEROUTPUT_H

#define CPOSLMBUFFEROUTPUT_H

//  INCLUDES

#include <s32mem.h>

#include "EPos_CPosLmOutput.h"

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

*  Buffer output for encoder.

*/

class CPosLmBufferOutput : public CPosLmOutput

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        *

        * @param anExpandSize The granularity of the buffer: each segment

        *   contains (in addition to 16 bytes of overhead) this number of

        *   bytes for data.

        * @returns A new instance of this class.

        */

        static CPosLmBufferOutput* NewL(

        /* In  */   TInt anExpandSize

        );

        /**

        * Destructor.

        */

        virtual ~CPosLmBufferOutput();

    public: // Functions from base classes

        /**

        * From CPosLmOutput.

        *

        * Ensures that any buffered data is written to the buffer. The buffer

        * is also compressed.

        */

        void CommitL();

        /*

        * From CPosLmOutput.

        *

        * @param aDesc A descriptor that should be written to the output.

        */

        void CheckLowDiskL(

        /* IN  */   const TDesC16& aDesc

        );

    public: // New functions

        /**

        * Get the output buffer.

        * The caller takes ownership of buffer.

        *

        * @return The output buffer.

        */

        CBufBase* BufferLC();

    private:

        /**

        * C++ default constructor.

        */

        CPosLmBufferOutput();

        /**

        * By default Symbian 2nd phase constructor is private.

        *

        * @param anExpandSize The granularity of the buffer: each segment

        *   contains (in addition to 16 bytes of overhead) this number of

        *   bytes for data.

        */

        void ConstructL(

        /* In  */   TInt anExpandSize

        );

        // Prohibit copy constructor if not deriving from CBase.

        CPosLmBufferOutput( const CPosLmBufferOutput& );

        // Prohibit assigment operator if not deriving from CBase.

        CPosLmBufferOutput& operator=( const CPosLmBufferOutput& );

    private:    // Data

        TBool               iOwnsBuffer;

        CBufBase*           iBuffer;

        RBufWriteStream     iBufWriteStream;

    };

#endif      // CPOSLMBUFFEROUTPUT_H

// End of File