camerauis/cameraapp/generic/src/audioplayer/camtoneplayerwrapper.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 16:18:56 +0200
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/*
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* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies). 
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Tone Wrapper implementation
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*
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*/
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#include <mdaaudiotoneplayer.h>
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#include <AudioPreference.h>
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#include "CamPanic.h"
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#include "camlogging.h"
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#include "mcamplayerobserver.h"
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#include "camtoneplayerwrapper.h"
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// ===========================================================================  
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// public constructors and destructor
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// ---------------------------------------------------------------------------
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// NewL <<static>>
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//
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// ---------------------------------------------------------------------------
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//
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CCamTonePlayerWrapper* 
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CCamTonePlayerWrapper::NewL( MCamPlayerObserver& aObserver )
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  {
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  CCamTonePlayerWrapper* self = 
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    new (ELeave) CCamTonePlayerWrapper( aObserver );
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  CleanupStack::PushL( self );
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  self->ConstructL();
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  CleanupStack::Pop( self );
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  return self;
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  }
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// ---------------------------------------------------------------------------
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// destructor <<virtual>>
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//
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// ---------------------------------------------------------------------------
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//
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CCamTonePlayerWrapper::~CCamTonePlayerWrapper()
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  {    
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  CancelPlay();
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  delete iTone;
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  iTone = NULL;
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  }
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// ===========================================================================  
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// from MMdaAudioToneObserver
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// ---------------------------------------------------------------------------
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// MatoPrepareComplete <<virtual>>
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//
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// ---------------------------------------------------------------------------
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//
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void 
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CCamTonePlayerWrapper::MatoPrepareComplete( TInt aStatus )
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  {
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  PRINT( _L("Camera => CCamTonePlayerWrapper::MatoPrepareComplete") );
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  if( KErrNone == aStatus )
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    {
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    iState = CCamTonePlayerWrapper::EPlaying;
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    iTone->Play();
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#ifdef __WINSCW__
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    // The tone player does not give a callback on the emulator.
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    // Emulate a callback here.
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    MatoPlayComplete( KErrNone );
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#endif // __WINSCW__
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    }
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  else if( iCallback )
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    {
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    NotifyPlayComplete( aStatus );
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    }
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  else
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    {
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    // No action
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    }
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  PRINT( _L("Camera <= CCamTonePlayerWrapper::MatoPrepareComplete") );
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  }
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// ---------------------------------------------------------------------------
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// MatoPlayComplete <<virtual>>
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// ---------------------------------------------------------------------------
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//
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void 
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CCamTonePlayerWrapper::MatoPlayComplete( TInt aStatus )
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  {
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  NotifyPlayComplete( aStatus );
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  }
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// ===========================================================================  
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// other public
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// ---------------------------------------------------------------------------
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// PlayTone
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// ---------------------------------------------------------------------------
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//
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void 
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CCamTonePlayerWrapper::PlayTone( TInt    aToneInHz, 
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                                 TInt    aLengthInUs, 
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                                 TReal32 aVolumeInPercent,
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                                 TBool   aCallback )
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  {
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  PRINT2( _L("Camera => CCamTonePlayerWrapper::PlayTone, callback:%d iState[%s]"), 
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          aCallback, 
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          KCamTonePlayerWrapperStateNames[iState] );
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   129
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  iCallback = aCallback;
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  switch( iState )
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    {
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    // ---------------------------------
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    case CCamTonePlayerWrapper::EIdle:
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        {
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        iState = CCamTonePlayerWrapper::EInitializing;
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        iTone->SetVolume( aVolumeInPercent * iTone->MaxVolume() ); 
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        iTone->PrepareToPlayTone( aToneInHz, aLengthInUs );
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   140
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        break;
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   142
        }
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    // ---------------------------------
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    case CCamTonePlayerWrapper::EInitializing:
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   145
    case CCamTonePlayerWrapper::EPlaying:
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        {
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        // Do notification, if asked.
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        // This play request is simply skipped,
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        // as there's tone playing on the way right now.
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        if( aCallback ) 
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          {
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          iObserver.PlayComplete( KErrInUse, -1 );   //iState-1 is another suggestion.
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          }  
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        break;
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   155
        }
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    default:
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      CamPanic( ECamPanicInvalidState );
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   158
      break;
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   159
    // ---------------------------------
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    }
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   161
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  PRINT( _L("Camera <= CCamAudioPlayerWrapper::Play") );
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  }
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   164
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// ---------------------------------------------------------------------------
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// CancelPlay
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// ---------------------------------------------------------------------------
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//
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void 
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CCamTonePlayerWrapper::CancelPlay()
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  {
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  if( iTone )
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    {
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    switch( iState )
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      {
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      case CCamTonePlayerWrapper::EPlaying:
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        iTone->CancelPlay();
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        // Because of the observer callback function MMdaAudioToneObserver::MatoPrepareComplete() is not called,
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        // so set state to idle directly
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        iState = CCamTonePlayerWrapper::EIdle;
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        break;
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   183
      case CCamTonePlayerWrapper::EInitializing:
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        iTone->CancelPrepare();
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        // Because of the observer callback function MMdaAudioToneObserver::MatoPrepareComplete() is not called,
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        // so set state to idle directly
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        iState = CCamTonePlayerWrapper::EIdle;
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   188
        break;
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   189
      case CCamTonePlayerWrapper::EIdle:
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   190
      default: 
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   191
        break;
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parents:
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   192
      }
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   193
    }
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   194
  }
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   195
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   196
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   197
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// ===========================================================================  
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// other private
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// ---------------------------------------------------------------------------
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// NotifyPlayComplete
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// ---------------------------------------------------------------------------
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//
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void
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CCamTonePlayerWrapper::NotifyPlayComplete( TInt aStatus )
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  {
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  PRINT( _L("Camera => CCamTonePlayerWrapper::NotifyPlayComplete") );
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   209
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  // Play is complete, return to idle state.
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  iState = CCamTonePlayerWrapper::EIdle;
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parents:
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   212
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  // Notify observer received status.
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  // Sound id is not usable here.
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   215
  if( iCallback )
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    iObserver.PlayComplete( aStatus, -1 );
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parents:
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   217
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  PRINT( _L("Camera <= CCamTonePlayerWrapper::NotifyPlayComplete") );
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   219
  }
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parents:
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   220
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parents:
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   221
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parents:
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   222
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// ===========================================================================  
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// private constructors
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// ---------------------------------------------------------------------------
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// ConstructL
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// ---------------------------------------------------------------------------
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   229
//
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   230
void 
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   231
CCamTonePlayerWrapper::ConstructL()
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   232
  {
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   233
  iTone = CMdaAudioToneUtility::NewL( 
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parents:
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   234
            *this, 
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parents:
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   235
            NULL, 
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parents:
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   236
            KAudioPriorityCameraTone,
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parents:
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   237
            TMdaPriorityPreference( KAudioPrefCamera ) );
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parents:
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   238
  }
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parents:
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   239
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parents:
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// ---------------------------------------------------------------------------
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// constructor
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// ---------------------------------------------------------------------------
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//
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CCamTonePlayerWrapper
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::CCamTonePlayerWrapper( MCamPlayerObserver& aObserver )
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  : iObserver     ( aObserver                     ),
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    iTone         ( NULL                          ),
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    iState        ( CCamTonePlayerWrapper::EIdle  ),
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    iCallback     ( EFalse                        )
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  {
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  }
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// ===========================================================================  
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// end of file