/*

 * Copyright (c) 2010 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: QT Bindings for TMS

 *

 */

#ifndef QTMS_BUFFER_H

#define QTMS_BUFFER_H

#include <qtms.h>

namespace QTMS

{

/**

 * QTMSBuffer class

 *

 * This interface provides data buffers to QTMS clients. This class allows

 * clients to allocate data by themselves or request a specific size of the

 * buffer from the factory.

 *

 * @lib QTMSapi.lib

 *

 */

class QTMSBuffer

{

public:

    /*

     * Destructor

     */

    virtual ~QTMSBuffer()

    {

    }

    /**

     * Return buffer type.

     *

     * @param  buftype

     *      Type of the buffer object (QTMS_BUFFER_MEMORY).

     *

     * @return

     *      QTMS_RESULT_SUCCESS if the operation was successful otherwise

     *      system error.

     *

     */

    virtual gint GetType(QTMSBufferType& buftype) = 0;

    /**

     * Returns time stamp of the buffer so that the framework can determine

     * the time at which this buffer has to be rendered by the output device

     * sink.

     *

     * @param  ts

     *      Time stamp in microseconds.

     *

     * @return

     *      QTMS_RESULT_SUCCESS if the operation was successful otherwise

     *      system error.

     *

     */

    virtual gint GetTimeStamp(guint64& ts) = 0;

    /**

     * Sets the time stamp on the Buffer so that the framework can determine

     * the time at which this buffer has to be rendered by the output device

     * sink.

     *

     * @param  ts

     *      Time stamp in microseconds.

     *

     * @return

     *      QTMS_RESULT_SUCCESS if the operation was successful otherwise

     *      system error.

     *

     */

    virtual gint SetTimeStamp(const guint64 ts) = 0;

    /**

     * Returns size of data in the buffer.

     *

     * @param  size

     *      Size of data in the buffer.

     *

     * @return

     *      QTMS_RESULT_SUCCESS if the operation was successful otherwise

     *      system error.

     *

     */

    virtual gint GetDataSize(guint& size) = 0;

    /**

     * Set size of data in the buffer after filling in by the client.

     *

     * @param  size

     *      Size of data in the buffer.

     *

     * @return

     *      QTMS_RESULT_SUCCESS if the operation was successful otherwise

     *      system error.

     *

     */

    virtual gint SetDataSize(const guint size) = 0;

    /**

     * Return pointer to the memory location of the data associated with this

     * buffer.

     *

     * @param  bufptr

     *      Pointer to the data stored in the buffer.

     *

     * @return

     *      QTMS_RESULT_SUCCESS if the operation was successful otherwise

     *      system error.

     *

     */

    virtual gint GetDataPtr(guint8*& bufptr) = 0;

};

} //namespace QTMS

#endif //QTMS_BUFFER_H