/*

* Copyright (c) 2007 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:  

*

*/

#ifndef CAM_PERFORMANCELOGGER_H

#define CAM_PERFORMANCELOGGER_H

#include "camcameracontrollerflags.hrh"

#ifdef CAMERAAPP_PERFORMANCE_CONTROLLER

// ===========================================================================

_LIT( KCamPerformanceItemFormat, "%s duration: %d \n");

class TCamPerformanceItem

  {

  public:

    TCamPerformanceItem( TCamCameraRequestId aId )

      : iId( aId ), iStart( Time64() ), iStop( iStart ) {};

    TCamPerformanceItem( const TCamPerformanceItem& aOther )

      : iId( aOther.iId ), iStart( aOther.iStart ), iStop( aOther.iStop ) {};

    void Start() { iStart = Time64(); iStop = iStart; };

    void Stop()  { iStop  = Time64();                 };

    TInt64 Time64() const

      {

      TTime time;

      time.HomeTime();

      return time.Int64();

      };

    TInt Duration() const

      {

      return (TInt)(iStop - iStart);

      };

    const TCamCameraRequestId iId;

    TInt64                    iStart;

    TInt64                    iStop;

  };

class CCamPerformanceLogger : public CBase

  {

  public:

    CCamPerformanceLogger() {};

    ~CCamPerformanceLogger() 

      { 

      iData.Reset();

      iData.Close(); 

      };

    void Requested( const TCamCameraRequestId& aRequest )

      {

      TInt error = iData.Append( TCamPerformanceItem( aRequest ) );

      if( KErrNone != error )

        {

        // Ignored

        }

      };

    void Completed( const TCamCameraRequestId& aRequest )

      {

      // Set the end time for last performance item

      // found with this id.

      for( TInt i = iData.Count() - 1; i >= 0; i-- )

        {

        if( aRequest == iData[i].iId )

          {

          iData[i].Stop();

          return;

          }          

        }

      /// Ignore error if not found

      };

    TInt InfoSizeEstimate() const

      {

      return 50 * iData.Count();

      }

    void InfoText( TDes& aDes ) const

      {

      TInt count = iData.Count();

      for( TInt i = 0; i < count; i++ )

        {

        const TCamPerformanceItem& item = iData[i];

        // ECamRequestNone used to mark sequence start and end.

        if( item.iId >= ECamRequestNone && item.iId < ECamRequestLast )

          {

          aDes.AppendFormat( KCamPerformanceItemFormat, KCamRequestNames[item.iId], item.Duration() );

          }

        } 

      }

  private:

    RArray<TCamPerformanceItem> iData;

  };

// ===========================================================================

#endif // CAMERAAPP_PERFORMANCE_CONTROLLER

#endif // CAM_PERFORMANCELOGGER_H