// Copyright (c) 2008-2009 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:

//

/**

   @file

   @internalComponent

*/

#ifndef OMXILSTATE_H

#define OMXILSTATE_H

#include <e32base.h>

#include <openmax/il/khronos/v1_x/OMX_Core.h>

#include "omxilfsm.h"

#include "omxilportmanager.h"

// Forward declarations

class TOmxILCommand;

/**

   Base class for concrete OpenMAX IL state objects (State Pattern)

*/

class COmxILFsm::COmxILState : public CBase

	{

public:

	//

	// Events, a.k.a. OpenMAX IL API calls

	//

	virtual OMX_ERRORTYPE GetParameter(

		const COmxILFsm& aFsm,

		OMX_INDEXTYPE aParamIndex,

		TAny* apComponentParameterStructure) const;

	/**

	   State-specific version of the OpenMAX IL SetParameter API.

	   @param [in] aFsm The main FSM context class that delegates the events to the

	   state classes.

	   @param [in] aParamIndex The index of the structure that is to be filled.

	   @param [in] apComponentParameterStructure A pointer to the IL structure.

	   @return OMX_ERRORTYPE

	*/

	virtual OMX_ERRORTYPE SetParameter(

		COmxILFsm& aFsm,

		OMX_INDEXTYPE aParamIndex,

		const TAny* apComponentParameterStructure) = 0;

	virtual OMX_ERRORTYPE GetConfig(

		const COmxILFsm& aFsm,

		OMX_INDEXTYPE aConfigIndex,

		TAny* apComponentConfigStructure) const;

	virtual OMX_ERRORTYPE SetConfig(

		COmxILFsm& aFsm,

		OMX_INDEXTYPE aConfigIndex,

		const TAny* apComponentConfigStructure);

	virtual OMX_ERRORTYPE GetExtensionIndex(

		const COmxILFsm& aFsm,

		OMX_STRING aParameterName,

		OMX_INDEXTYPE* apIndexType) const;

	/**

	   State-specific version of the OpenMAX IL GetState API.

	   @return OMX_STATETYPE

	*/

	virtual OMX_STATETYPE GetState() const = 0;

	/**

	   State-specific version of the OpenMAX IL ComponentTunnelRequest API.

	   @param [in] aFsm The main FSM context class that delegates the events to

	   the state classes.

	   @param [in] aPort Used to select the port on the component to be used

	   for tunneling.

	   @param [in] aTunneledComp Handle of the component to tunnel with.

	   @param [in] aTunneledPort Indicates the port the component should tunnel

	   with.

	   @param [in] aTunnelSetup Pointer to the tunnel setup structure.

	   @return OMX_ERRORTYPE

	*/

	inline virtual OMX_ERRORTYPE ComponentTunnelRequest(

		COmxILFsm& aFsm,

		OMX_U32 aPort,

		OMX_HANDLETYPE aTunneledComp,

		OMX_U32 aTunneledPort,

		OMX_TUNNELSETUPTYPE* apTunnelSetup) = 0;

	/**

	   State-specific version of the PopulateBuffer method used by the FSM

	   object to implement the OpenMAX IL AllocateBuffer/UseBuffer APIs.

	   @param [in] aFsm The main FSM context class that delegates the events

	   to the state classes.

	   @param [out] appBufferHdr A pointer to a pointer of an

	   OMX_BUFFERHEADERTYPE structure that receives the pointer to the buffer

	   header.

	   @param [in] aPortIndex The index of the port that will use the

	   specified buffer. This index is relative to the component that owns the

	   port.

	   @param [in] apAppPrivate A pointer that refers to an

	   implementation-specific memory area that is under responsibility of the

	   supplier of the buffer.

	   @param [in] aSizeBytes The buffer size in bytes.

	   @param [in] apBuffer A pointer to the memory buffer area to be used.

	   @param [out] portPopulationCompleted Used to signal the FSM object the

	   the port population has completed.

	   @return OMX_ERRORTYPE

	*/

	inline virtual OMX_ERRORTYPE PopulateBuffer(

		COmxILFsm& aFsm,

		OMX_BUFFERHEADERTYPE** appBufferHdr,

		OMX_U32 aPortIndex,

		OMX_PTR apAppPrivate,

		OMX_U32 aSizeBytes,

		OMX_U8* apBuffer,

		TBool& portPopulationCompleted) = 0;

	/**

	   State-specific version of the OpenMAX IL FreeBuffer API.

	   @param [in] aFsm The main FSM context class that delegates the events

	   to the state classes.

	   @param [in] aPortIndex The index of the port that is using the

	   specified buffer.

	   @param [in] apBuffer A pointer to an OMX_BUFFERHEADERTYPE structure

	   used to provide or receive the pointer to the buffer header.

	   @param [out] aPortDepopulationCompleted Used to signal the FSM object

	   the the port population has completed.

	   @return OMX_ERRORTYPE

	*/

	inline virtual OMX_ERRORTYPE FreeBuffer(

		COmxILFsm& aFsm,

		OMX_U32 aPortIndex,

		OMX_BUFFERHEADERTYPE* apBuffer,

		TBool& aPortDepopulationCompleted) = 0;

	/**

	   State-specific version of the OpenMAX IL EmptyThisBuffer API.

	   @param  [in] aFsm The main FSM context class that delegates the events

	   to the state classes.

	   @param [in] apBuffer A pointer to an OMX_BUFFERHEADERTYPE structure that is

	   used to receive the pointer to the buffer header. The buffer header

	   shall specify the index of the input port that receives the buffer.

	   @return OMX_ERRORTYPE

	*/

	inline virtual OMX_ERRORTYPE EmptyThisBuffer(

		COmxILFsm& aFsm,

		OMX_BUFFERHEADERTYPE* apBuffer) = 0;

	/**

	   State-specific version of the OpenMAX IL FillThisBuffer API.

	   @param [in] aFsm The main FSM context class that delegates the events

	   to the state classes.

	   @param [in] apBuffer A pointer to an OMX_BUFFERHEADERTYPE structure

	   that is used to receive the pointer to the buffer header. The buffer

	   header shall specify the index of the input port that receives the

	   buffer.

	   @return OMX_ERRORTYPE

	*/

	inline virtual OMX_ERRORTYPE FillThisBuffer(

		COmxILFsm& aFsm,

		OMX_BUFFERHEADERTYPE* apBuffer) = 0;

	/**

	   State-specific version of the method used by the FSM object to

	   implement the OpenMAX IL OMX_CommandStateSet command.

	   @param [in] aFsm The main FSM context class that delegates the events

	   to the state classes.

	   @param [in] aCommand A TOmxILCommand object used to carry the command

	   parameters.

	   @return OMX_ERRORTYPE

	*/

	virtual OMX_ERRORTYPE CommandStateSet(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand) = 0;

	virtual OMX_ERRORTYPE CommandFlush(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	/**

	   State-specific version of the method used by the FSM object to

	   implement the OpenMAX IL OMX_CommandPortEnable command.

	   @param [in] aFsm The main FSM context class that delegates the events

	   to the state classes.

	   @param [in] aCommand A TOmxILCommand object used to carry the command

	   parameters.

	   @return OMX_ERRORTYPE

	*/

	virtual OMX_ERRORTYPE CommandPortEnable(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand) = 0;

	virtual OMX_ERRORTYPE CommandPortDisable(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	virtual OMX_ERRORTYPE CommandMarkBuffer(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

protected:

	virtual OMX_ERRORTYPE SetParameterV2(

		COmxILFsm& aFsm,

		OMX_INDEXTYPE aParamIndex,

		const TAny* apComponentParameterStructure);

	inline virtual OMX_ERRORTYPE PopulateBufferV2(

		COmxILFsm& aFsm,

		OMX_BUFFERHEADERTYPE** appBufferHdr,

		OMX_U32 aPortIndex,

		OMX_PTR apAppPrivate,

		OMX_U32 aSizeBytes,

		OMX_U8* apBuffer,

		TBool& portPopulationCompleted);

	inline virtual OMX_ERRORTYPE FreeBufferV2(

		COmxILFsm& aFsm,

		OMX_U32 aPortIndex,

		OMX_BUFFERHEADERTYPE* apBuffer,

		TBool& aPortDepopulationCompleted);

	inline virtual OMX_ERRORTYPE ComponentTunnelRequestV2(

		COmxILFsm& aFsm,

		OMX_U32 aPort,

		OMX_HANDLETYPE aTunneledComp,

		OMX_U32 aTunneledPort,

		OMX_TUNNELSETUPTYPE* apTunnelSetup);

	inline virtual OMX_ERRORTYPE EmptyThisBufferV2(

		COmxILFsm& aFsm,

		OMX_BUFFERHEADERTYPE* apBuffer);

	inline virtual OMX_ERRORTYPE FillThisBufferV2(

		COmxILFsm& aFsm,

		OMX_BUFFERHEADERTYPE* apBuffer);

	};

/**

   Concrete class that implements the OpenMAX IL OMX_StateInvalid state

*/

class COmxILFsm::COmxILStateInvalid : public COmxILFsm::COmxILState

	{

public:

	OMX_ERRORTYPE GetParameter(const COmxILFsm& aFsm,

							   OMX_INDEXTYPE aParamIndex,

							   TAny* apComponentParameterStructure) const;

	OMX_ERRORTYPE SetParameter(COmxILFsm& aFsm,

							   OMX_INDEXTYPE aParamIndex,

							   const TAny* apComponentParameterStructure);

	OMX_ERRORTYPE GetConfig(const COmxILFsm& aFsm,

							OMX_INDEXTYPE aConfigIndex,

							TAny* apComponentConfigStructure) const;

	OMX_ERRORTYPE SetConfig(COmxILFsm& aFsm,

							OMX_INDEXTYPE aConfigIndex,

							const TAny* apComponentConfigStructure);

	OMX_ERRORTYPE GetExtensionIndex(const COmxILFsm& aFsm,

									OMX_STRING aParameterName,

									OMX_INDEXTYPE* apIndexType) const;

	OMX_STATETYPE GetState() const;

	OMX_ERRORTYPE ComponentTunnelRequest(COmxILFsm& aFsm,

										 OMX_U32 aPort,

										 OMX_HANDLETYPE aTunneledComp,

										 OMX_U32 aTunneledPort,

										 OMX_TUNNELSETUPTYPE* apTunnelSetup);

	OMX_ERRORTYPE PopulateBuffer(COmxILFsm& aFsm,

								 OMX_BUFFERHEADERTYPE** appBufferHdr,

								 OMX_U32 aPortIndex,

								 OMX_PTR apAppPrivate,

								 OMX_U32 aSizeBytes,

								 OMX_U8* apBuffer,

								 TBool& portPopulationCompleted);

	OMX_ERRORTYPE FreeBuffer(COmxILFsm& aFsm,

							 OMX_U32 aPortIndex,

							 OMX_BUFFERHEADERTYPE* apBuffer,

							 TBool& aPortDepopulationCompleted);

	OMX_ERRORTYPE EmptyThisBuffer(COmxILFsm& aFsm,

								  OMX_BUFFERHEADERTYPE* apBuffer);

	OMX_ERRORTYPE FillThisBuffer(COmxILFsm& aFsm,

								 OMX_BUFFERHEADERTYPE* apBuffer);

	OMX_ERRORTYPE CommandStateSet(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	OMX_ERRORTYPE CommandFlush(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	OMX_ERRORTYPE CommandPortEnable(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	OMX_ERRORTYPE CommandPortDisable(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	OMX_ERRORTYPE CommandMarkBuffer(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	};

/**

   Concrete class that implements the OpenMAX IL OMX_StateLoaded state

*/

class COmxILFsm::COmxILStateLoaded : public COmxILFsm::COmxILState

	{

public:

	OMX_STATETYPE GetState() const;

	OMX_ERRORTYPE SetParameter(COmxILFsm& aFsm,

							   OMX_INDEXTYPE aParamIndex,

							   const TAny* apComponentParameterStructure);

	OMX_ERRORTYPE PopulateBuffer(COmxILFsm& aFsm,

								 OMX_BUFFERHEADERTYPE** appBufferHdr,

								 OMX_U32 aPortIndex,

								 OMX_PTR apAppPrivate,

								 OMX_U32 aSizeBytes,

								 OMX_U8* apBuffer,

								 TBool& portPopulationCompleted);

	OMX_ERRORTYPE FreeBuffer(COmxILFsm& aFsm,

							 OMX_U32 aPortIndex,

							 OMX_BUFFERHEADERTYPE* apBuffer,

							 TBool& aPortDepopulationCompleted);

	OMX_ERRORTYPE EmptyThisBuffer(COmxILFsm& aFsm,

								  OMX_BUFFERHEADERTYPE* apBuffer);

	OMX_ERRORTYPE FillThisBuffer(COmxILFsm& aFsm,

								 OMX_BUFFERHEADERTYPE* apBuffer);

	OMX_ERRORTYPE ComponentTunnelRequest(COmxILFsm& aFsm,

										 OMX_U32 aPort,

										 OMX_HANDLETYPE aTunneledComp,

										 OMX_U32 aTunneledPort,

										 OMX_TUNNELSETUPTYPE* apTunnelSetup);

	OMX_ERRORTYPE CommandStateSet(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	OMX_ERRORTYPE CommandPortEnable(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	};

/**

   Concrete class that implements the intermediate state OMX_StateLoaded ->

   OMX_StateIdle.

*/

class COmxILFsm::COmxILStateLoadedToIdle : public COmxILFsm::COmxILStateLoaded

	{

public:

	OMX_ERRORTYPE SetParameter(COmxILFsm& aFsm,

							   OMX_INDEXTYPE aParamIndex,

							   const TAny* apComponentParameterStructure);

	OMX_ERRORTYPE PopulateBuffer(COmxILFsm& aFsm,

								 OMX_BUFFERHEADERTYPE** appBufferHdr,

								 OMX_U32 aPortIndex,

								 OMX_PTR apAppPrivate,

								 OMX_U32 aSizeBytes,

								 OMX_U8* apBuffer,

								 TBool& portPopulationCompleted);

	OMX_ERRORTYPE CommandStateSet(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	OMX_ERRORTYPE CommandPortEnable(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

private:

	TBool iUseBufferReceived;

	};

/**

   Concrete class that implements the OpenMAX IL OMX_StateWaitForResources

   state

   NOTE: This state is here only to provide the basic functionality of

   transitioning form OMX_StateLoaded to OMX_StateWaitForResources and

   viceversa. Transition from OMX_StateWaitForResources to OMX_StateIdle is not

   implemented at this stage since a Resource Manager is not present

   yet. Whenever a Resource Manager becomes available, a

   COmxILStateWaitForResourcesToIdle substate should be implemented to handle

   the allocation of buffers mandated by the standard in this transition.

*/

class COmxILFsm::COmxILStateWaitForResources : public COmxILFsm::COmxILState

	{

public:

	OMX_STATETYPE GetState() const;

	OMX_ERRORTYPE SetParameter(COmxILFsm& aFsm,

							   OMX_INDEXTYPE aParamIndex,

							   const TAny* apComponentParameterStructure);

	OMX_ERRORTYPE PopulateBuffer(COmxILFsm& aFsm,

								 OMX_BUFFERHEADERTYPE** appBufferHdr,

								 OMX_U32 aPortIndex,

								 OMX_PTR apAppPrivate,

								 OMX_U32 aSizeBytes,

								 OMX_U8* apBuffer,

								 TBool& portPopulationCompleted);

	OMX_ERRORTYPE FreeBuffer(COmxILFsm& aFsm,

							 OMX_U32 aPortIndex,

							 OMX_BUFFERHEADERTYPE* apBuffer,

							 TBool& aPortDepopulationCompleted);

	OMX_ERRORTYPE EmptyThisBuffer(COmxILFsm& aFsm,

								  OMX_BUFFERHEADERTYPE* apBuffer);

	OMX_ERRORTYPE FillThisBuffer(COmxILFsm& aFsm,

								 OMX_BUFFERHEADERTYPE* apBuffer);

	OMX_ERRORTYPE ComponentTunnelRequest(COmxILFsm& aFsm,

										 OMX_U32 aPort,

										 OMX_HANDLETYPE aTunneledComp,

										 OMX_U32 aTunneledPort,

										 OMX_TUNNELSETUPTYPE* apTunnelSetup);

	OMX_ERRORTYPE CommandStateSet(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	OMX_ERRORTYPE CommandPortEnable(

		COmxILFsm& aFsm,

		const TOmxILCommand& aCommand);

	};

/**

   Concrete class that implements the OpenMAX IL COmxILStateIdle state

*/

class COmxILFsm::COmxILStateIdle : public COmxILFsm::COmxILState

	{

public:

	OMX_STATETYPE GetState() const;

	OMX_ERRORTYPE SetParameter(COmxILFsm& aFsm,

							   OMX_INDEXTYPE aParamIndex,

							   const TAny* apComponentParameterStructure);