/*

* Copyright (c) 2009 Aricent and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:

* Aricent - initial contribution.

*

* Contributors:

*

* Description:

* Declares interface class MBaseCodec whose pure virtual functions should be

* implemented by all video encoder/decoder wrappers

*

*/

#ifndef ARIBASECODEC_H

#define ARIBASECODEC_H

#include <E32def.h>

class MBaseCodec

	{

	public:

		/**

		 * This enumeration should be used to indicate the result

		 * of a call to DoProcessL

		 */

		enum TCodecState {

			EInputConsumed,

			EOutputConsumed,

			EConsumed,

			ENotConsumed

			};

	public:

		/**

		 * Processes an input buffer , returns one of the TCodecState

		 * @param aInpBuf

		 *    Coded input data

		 * @param aOutBuf

		 *    Decoded output data

		 * @leave The method will leave if an error occurs

		 * @return one of the TCodecState members

		 */

		virtual TInt DoProcessL( TAny *aInpBuf, TAny* aOutBuf = NULL ) = 0;

		/**

		 * Used to set codec parameteres

		 * @param aCommand

		 *    Indicates the encoder parameter to set

		 * @param aCmdData

		 *    The value to which the encoder parameter should be set

		 * @return symbian wide error code

		 */

		virtual TInt SetParam( TInt aCommand, TAny* aCmdData ) = 0;

		/**

		 * Used to get codec parameteres

		 * @param aCommand

		 *    Indicates the encoder parameter to get

		 * @param aCmdData

		 *    The value of the encoder parameter (OUT)

		 * @return symbian wide error code

		 */

		virtual TInt GetParam( TInt aCommand, TAny* aCmdData ) = 0;

		/**

		 * Cancels all processing of the commands

		 */

		virtual void Reset() = 0;

	};

#endif //ARIBASECODEC_H