/*

* Copyright (c) 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:  Defines the ECom plugin for HTI camera service.

*

*/

#ifndef HTICAMERASERVICEPLUGIN_H

#define HTICAMERASERVICEPLUGIN_H

//  INCLUDES

#include <HtiServicePluginInterface.h>

#include "EngineVideoRecording.h"

// CONSTANTS

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class CEngineVideoRecording;

class MEngineVideoRecordingObserver;

// CLASS DECLARATION

/**

*  The ECom plugin for HTI camera service.

*

*/

class CHtiCameraServicePlugin : public CHTIServicePluginInterface,

                                public MEngineVideoRecordingObserver

    {

    protected:

        // commands

        enum TCommands

            {

            ECmdInit                    = 0x01,

            ECmdPrepareVideoRecording   = 0x02,

            ECmdStartVideoRecording     = 0x05,

            ECmdPausingVideoRecording   = 0x06,

            ECmdResumeVideoRecording    = 0x07,

            ECmdStopVideoRecording      = 0x08,

            ECmdCloseVideoRecording     = 0x09,

            ECmdGetZoom                 = 0x0a,

            ECmdSetZoom                 = 0x0b,

            EResultOk               = 0xFF // only for response message

            };

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CHtiCameraServicePlugin* NewL();

    public: // New functions

    public:

    // Functions from base classes

    /**

     * From CHTIServicePluginInterface

     * Called by the HTI Framework when sending message to this service.

     * @param aMessage message body destinated to a servive

     * @param aPriority message priority

     */

    void ProcessMessageL(const TDesC8& aMessage,

            THtiMessagePriority aPriority);

    /**

     * From CHTIServicePluginInterface

     * Indicates to HTI Framework whether the plugin is ready to process

     * a new message or if it's busy processing previous message.

     */

    TBool IsBusy();

    protected:  // New functions

        /**

        * C++ default constructor.

        */

        CHtiCameraServicePlugin();

        /**

        * 2nd phase constructor.

        */

        void ConstructL();

        /**

        * Destructor.

         */

        virtual ~CHtiCameraServicePlugin();

    protected:

        // Functions from base classes

        /**

        * From MEngineVideoRecordingObserver

        * Called asynchronously when CEngineVideoRecording::Init(), CCaeEngine::CEngineVideoRecording(), 

        * or CEngineVideoRecording::Reserve() completes.

        * Indicates if Video Recording Engine is ready for operation, 

        * the camera is reserved and its power is switched on.

        * @param aError Error code KErrNone to indicate success or a standard Symbian OS error code.

        * @return void

        */

        virtual void MevroInitComplete( TInt aError );

        /**

         * From MEngineVideoRecordingObserver

         * Called asynchronously when preparing of video recording completes 

         * after PrepareVideoRecordingL() has been called.

         * May be called second time with an error code after a successful preparation 

         * if video recording loses its prepared state for some reason (e.g. audio HW 

         * is reserved for some other application).

         * @param aError Error code KErrNone to indicate success or a standard Symbian OS error code.

         * @return void

         */

        virtual void MevroVideoPrepareComplete(TInt aError);

        /**

         * From MEngineVideoRecordingObserver

         * Called (possibly asynchronously) when video recording is running 

         * after CEngineVideoRecording::StartVideoRecording() or 

         * CEngineVideoRecording::ResumeVideoRecording() has been called.

         * @param aError Error code KErrNone to indicate success or a standard Symbian OS error code.

         * @return void

         */

        virtual void MevroVideoRecordingOn(TInt aError);

        /**

         * From MEngineVideoRecordingObserver

         * Called (possibly asynchronously) when video recording is paused after 

         * CEngineVideoRecording::PauseVideoRecording() has been called.

         * @param aError Error code KErrNone to indicate success or a standard Symbian OS error code.

         * @return void

         */

        virtual void MevroVideoRecordingPaused(TInt aError);

        /**

         * From MEngineVideoRecordingObserver

         * Called (possibly asynchronously) when video recording is completed 

         * after CEngineVideoRecording::StopVideoRecording() has been called or 

         * recording has been completed for some other reason.

         * @param aError Error code KErrNone to indicate success or a standard Symbian OS error code.

         * if aError == KErrDiskFull, then disk storage is full.

         * if aError == KErrCompletion, then clip max size was reached.

         * @return void

         */

        virtual void MevroVideoRecordingComplete(TInt aError);

    private:

        void HandleInitCmdL(const TDesC8& aData);

        void HandlePrepareVideoRecordingCmdL(const TDesC8& aData);

        void HandleStartVideoRecordingCmdL( const TDesC8& aData );

        void HandlePausingVideoRecordingCmdL( const TDesC8& aData );

        void HandleResumeVideoRecordingCmdL( const TDesC8& aData );

        void HandleStopVideoRecordingCmdL( const TDesC8& aData );

        void HandleCloseVideoRecordingCmdL( const TDesC8& aData );

        void HandleGetZoomCmdL( const TDesC8& aData );

        void HandleSetZoomCmdL( const TDesC8& aData );

        void SendOkMsgL( const TDesC8& aData );

        void SendErrorMessageL( TInt aError, const TDesC8& aDescription );

        TInt ParseString( const TDesC8& aRequest,

                                       TInt aOffset, TDes& aResult );

    public:     // Data

    protected:  // Data

    private:    // Data

        // Flag telling if the service is busy processing a message

        TBool                   iIsBusy;

        TInt                    iError;

        CEngineVideoRecording*  iVideoRecordingEngine;

        CActiveSchedulerWait*   iWaiter;

    };

#endif      // HTICAMERASERVICEPLUGIN_H

// End of File