#ifndef __KERNEL_MODE__

#include <e32std.h>

#endif

#define BUFSIZE  (600*1024)

#define BITMAPBUFSIZE  (900 * 1024)

	{

public:

	/**

	Structure for holding driver capabilities information

	*/

	class TCaps

		{

	public:

		TVersion iVersion;

		};

	/**

	Structure for holding driver configuration data

	*/

	class TConfig

		{

	public:

		TInt iPddBufferSize;        /**< Size of the PDD's data buffer (not modifiable) */

		//RArray<TSize> iImageSizes /**< size the PDD support*/ //TODO:implement

		};

	typedef TPckgBuf<TConfig> TConfigBuf;

	/**

	Structure for holding driver chuck information

	*/

	class TChunkInfo

		{

	public:

		TInt iChunkHandle;

		TInt iChunkMaxSize;

		TInt iChunkRemSize;

		};

	/**

	Opens a logical channel to the driver

	@return One of the system wide error codes.

	*/

	inline TInt Open();

	/**

	Gets the current configuration settings.

	@param aConfig A structure which will be filled with the configuration settings.

	@return KErrNone

	*/

	inline TInt GetConfig(TConfigBuf& aConfig);

	/**

	Sets the current configuration settings.

	@param aConfig The new configuration settings to be used.

	@return KErrInUse if there are outstanding data transfer requests.

			KErrArgument if any configuration values are invalid.

			KErrNone otherwise

	*/

	inline TInt SetConfig(const TConfigBuf& aConfig);

	/**

	Power on Camera Device.

	*/

	inline void PowerOn(TRequestStatus& aStatus);

	/**

	Power off Camera Device.

	*/

	inline void PowerOff(TRequestStatus& aStatus);

	/** 

	Init ViewFinder.

	*/

	inline TInt InitViewFinder();

	/**

	Request data from device.

	Only one send request may be pending at any time.

	@param aStatus	The request to be signalled when the data has been sent.

					The result value will be set to KErrNone on success;

					or set to one of the system wide error codes when an error occurs.

	@param aData	A descriptor containing the data to send.

	*/

	inline void StartViewFinder(TRequestStatus& aStatus,TInt& aChunkLen);

	/**

	Cancels a previous getdata request.

	*/

	inline void StartViewFinderCancel();

	/**

	Cancels a previous getdata request and notice device not to send data

	*/

	inline void StopViewFinder();

	/**

	Request data(Capture data) from device.

	Only one send request may be pending at any time.

	@param aStatus	The request to be signalled when the data has been sent.

					The result value will be set to KErrNone on success;

					or set to one of the system wide error codes when an error occurs.

	@param aData	A descriptor containing the data to send.

	*/

	inline void Capture(TRequestStatus& aStatus,TInt& aChunkLen);

	/**

	Cancels a previous getCapturedata request.

	*/

	inline void CaptureCancel();

	/**

	Returns the driver's name

	*/

	inline static const TDesC& Name();

	/**

	Returns the version number of the driver

	*/

	inline static TVersion VersionRequired();

	/**

	Opens a shared chunk on kernel side and makes a handle to the kernel chunk object

	@param aChunk		The object to which the handle will refer

	@param aChunkInfo	information of the created chunk.

	*/

#ifndef __KERNEL_MODE__

	inline TInt OpenSharedChunks(RChunk& aChunk,TChunkInfo& aChunkInfo);

	/**

	Closes ashared chunk

	@param aChunk 	The object to which the handle will refer

	@param aStatus	The request to be signalled when the data has been sent.

					The result value will be set to KErrNone on success;

					or set to one of the system wide error codes when an error occurs.

	*/

	inline TInt CloseSharedChunks(TRequestStatus& aStatus,RChunk& aChunk);

#endif

	/**

	Enumeration of Control messages.

	*/

	enum TControl

		{

		EGetConfig,

		ESetConfig,

		EInitViewFinder,

		EOpenSharedChunck

		};

	/**

	Enumeration of Request messages.

	*/

	enum TRequest

		{

		EPowerOff,

		EPowerOn,

		EStart,

		ETransferData,

		ECapture,

		ECloseSharedChunck,

		ENumRequests,

		EAllRequests = (1<<ENumRequests)-1

		};

	// Kernel side LDD channel is a friend

	friend class DWebcameraLogicalChannel;

	};