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os/mm/devsoundextensions/effects/DistAtten/DistanceAttenuationProxy/Src/DistanceAttenuationProxy.cpp
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution. 
     1 /*

     2 * Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   Implementation of the Distance Attenuation proxy class

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 // INCLUDE FILES

    22 

    23 #ifdef _DEBUG

    24 #include <e32svr.h>

    25 #endif

    26 

    27 #include "DistanceAttenuationProxy.h"

    28 #include "DistanceAttenuationEventObserver.h"

    29 #include <CustomInterfaceUtility.h>

    30 

    31 

    32 // ============================ MEMBER FUNCTIONS ===============================

    33 

    34 // -----------------------------------------------------------------------------

    35 // CDistanceAttenuationProxy::CDistanceAttenuationProxy

    36 // C++ default constructor can NOT contain any code, that

    37 // might leave.

    38 // -----------------------------------------------------------------------------

    39 //

    40 CDistanceAttenuationProxy::CDistanceAttenuationProxy(

    41 	TMMFMessageDestinationPckg aMessageHandler,

    42 	MCustomCommand& aCustomCommand,

    43 	CCustomInterfaceUtility* aCustomInterfaceUtility )

    44 	: 	iCustomCommand(&aCustomCommand),

    45 		iMessageHandler(aMessageHandler),

    46 		iCustomInterfaceUtility(aCustomInterfaceUtility)

    47 

    48     {

    49     }

    50 

    51 // Destructor

    52 CDistanceAttenuationProxy::~CDistanceAttenuationProxy()

    53     {

    54     // Remove the custom interface message handler before we destroy the proxy.

    55     if(iCustomInterfaceUtility)

    56         iCustomInterfaceUtility->RemoveCustomInterface(iMessageHandler);

    57 	delete iDistanceAttenuationEventObserver;

    58 	delete iCustomInterfaceUtility;

    59 	}

    60 

    61 // -----------------------------------------------------------------------------

    62 // CDistanceAttenuationProxy::NewL

    63 // Static function for creating an instance of the Distance Attenuation object.

    64 // -----------------------------------------------------------------------------

    65 //

    66 EXPORT_C CDistanceAttenuationProxy* CDistanceAttenuationProxy::NewL(

    67 	TMMFMessageDestinationPckg aMessageHandler,

    68     MCustomCommand& aCustomCommand,

    69     CCustomInterfaceUtility* aCustomInterfaceUtility )

    70     {

    71     CDistanceAttenuationProxy* self = new (ELeave) CDistanceAttenuationProxy(aMessageHandler, aCustomCommand, aCustomInterfaceUtility);

    72     CleanupStack::PushL(self);

    73     self->ConstructL();

    74     CleanupStack::Pop(self);

    75     return self;

    76 	}

    77 

    78 // -----------------------------------------------------------------------------

    79 // CDistanceAttenuationProxy::ConstructL

    80 // -----------------------------------------------------------------------------

    81 //

    82 void CDistanceAttenuationProxy::ConstructL()

    83     {

    84 #ifdef _DEBUG

    85     RDebug::Print(_L("CDistanceAttenuationProxy::ConstructL"));

    86 #endif

    87     iDistanceAttenuationEventObserver = CDistanceAttenuationEventObserver::NewL(iMessageHandler, *iCustomCommand, *this);

    88     StartObserver();

    89     // sends a message to fetch initial data.

    90     TEfDistanceAttenuationDataPckg dataPckgFrom;

    91 	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EDaefInitialize, KNullDesC8, KNullDesC8, dataPckgFrom);

    92 	SetEffectData(dataPckgFrom);

    93 	}

    94 

    95 

    96 // -----------------------------------------------------------------------------

    97 // CDistanceAttenuationProxy::ApplyL

    98 // Apply the Distance Attenuation settings.

    99 // -----------------------------------------------------------------------------

   100 //

   101 EXPORT_C void CDistanceAttenuationProxy::ApplyL()

   102 	{

   103 #ifdef _DEBUG

   104     RDebug::Print(_L("CDistanceAttenuationProxy::Apply"));

   105 #endif

   106 

   107 	if ( !iHaveUpdateRights )

   108 		{

   109 		User::Leave(KErrAccessDenied);

   110 		}

   111 

   112 	iDistanceAttenuationData.iEnabled = iEnabled;

   113 	iDistanceAttenuationData.iEnforced = iEnforced;

   114 	iDistanceAttenuationData.iHaveUpdateRights = iHaveUpdateRights;

   115 	iCustomCommand->CustomCommandSync(iMessageHandler, (TInt)EDaefApply, DoEffectData(), KNullDesC8);

   116 	}

   117 

   118 // -----------------------------------------------------------------------------

   119 // CDistanceAttenuationProxy::StartObserver

   120 // Starts the event observer. The event observer monitors asynchronous events

   121 // from the message handler.

   122 // -----------------------------------------------------------------------------

   123 //

   124 void CDistanceAttenuationProxy::StartObserver()

   125 	{

   126 #ifdef _DEBUG

   127     RDebug::Print(_L("CDistanceAttenuationProxy::StartObserver"));

   128 #endif

   129 

   130 	iDistanceAttenuationEventObserver->Start();

   131 	}

   132 

   133 // -----------------------------------------------------------------------------

   134 // CDistanceAttenuationProxy::DistanceAttenuationEvent

   135 // Checks which data member has changed and notify the observers.

   136 // -----------------------------------------------------------------------------

   137 //

   138 void CDistanceAttenuationProxy::DistanceAttenuationEvent(

   139 	const TDesC8& aBuffer )

   140 	{

   141 #ifdef _DEBUG

   142     RDebug::Print(_L("CDistanceAttenuationProxy::DistanceAttenuationEvent"));

   143 #endif

   144 

   145 	TEfDistanceAttenuationDataPckg dataPckgFrom;

   146 	dataPckgFrom.Copy(aBuffer);

   147 	TEfDistanceAttenuation newDistanceAttenuationData = dataPckgFrom();

   148 

   149 	TUint8 event = 0;

   150 

   151 		if ( newDistanceAttenuationData.iEnabled != iDistanceAttenuationData.iEnabled )

   152 			{

   153 			iDistanceAttenuationData.iEnabled = newDistanceAttenuationData.iEnabled;

   154 			iEnabled = newDistanceAttenuationData.iEnabled;

   155 			if ( iDistanceAttenuationData.iEnabled )

   156 				{

   157 				event = MAudioEffectObserver::KEnabled;

   158 				}

   159 			else

   160 				{

   161 				event = MAudioEffectObserver::KDisabled;

   162 				}

   163 			}

   164 		else if ( newDistanceAttenuationData.iEnforced != iDistanceAttenuationData.iEnforced )

   165 			{

   166 			iDistanceAttenuationData.iEnforced = newDistanceAttenuationData.iEnforced;

   167 			iEnforced = newDistanceAttenuationData.iEnforced;

   168 			if ( iDistanceAttenuationData.iEnforced )

   169 				{

   170 				event = MAudioEffectObserver::KEnforced;

   171 				}

   172 			else

   173 				{

   174 				event = MAudioEffectObserver::KNotEnforced;

   175 				}

   176 			}

   177 		else if ( newDistanceAttenuationData.iHaveUpdateRights != iDistanceAttenuationData.iHaveUpdateRights )

   178 			{

   179 			iDistanceAttenuationData.iHaveUpdateRights = newDistanceAttenuationData.iHaveUpdateRights;

   180 			iHaveUpdateRights = newDistanceAttenuationData.iHaveUpdateRights;

   181 			if ( iDistanceAttenuationData.iHaveUpdateRights )

   182 				{

   183 				event = MAudioEffectObserver::KGainedUpdateRights;

   184 				}

   185 			else

   186 				{

   187 				event = MAudioEffectObserver::KLostUpdateRights;

   188 				}

   189 			}

   190 

   191 		else if ( newDistanceAttenuationData.iRMin != iDistanceAttenuationData.iRMin )

   192 			{

   193 			iDistanceAttenuationData.iRMin = newDistanceAttenuationData.iRMin;

   194 			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;

   195 			}

   196 		else if ( newDistanceAttenuationData.iRMax != iDistanceAttenuationData.iRMax )

   197 			{

   198 			iDistanceAttenuationData.iRMax = newDistanceAttenuationData.iRMax;

   199 			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;

   200 			}

   201 		else if ( newDistanceAttenuationData.iMuteAfterMax != iDistanceAttenuationData.iMuteAfterMax )

   202 			{

   203 			iDistanceAttenuationData.iMuteAfterMax = newDistanceAttenuationData.iMuteAfterMax;

   204 			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;

   205 			}

   206 		else if ( newDistanceAttenuationData.iRollOffFactor != iDistanceAttenuationData.iRollOffFactor )

   207 			{

   208 			iDistanceAttenuationData.iRollOffFactor = newDistanceAttenuationData.iRollOffFactor;

   209 			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;

   210 			}

   211 		else if ( newDistanceAttenuationData.iRoomRollOffFactor != iDistanceAttenuationData.iRoomRollOffFactor )

   212 			{

   213 			iDistanceAttenuationData.iRoomRollOffFactor = newDistanceAttenuationData.iRoomRollOffFactor;

   214 			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;

   215 			}

   216 		else if ( newDistanceAttenuationData.iRollOffFactorMax != iDistanceAttenuationData.iRollOffFactorMax )

   217 			{

   218 			iDistanceAttenuationData.iRollOffFactorMax = newDistanceAttenuationData.iRollOffFactorMax;

   219 			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;

   220 			}

   221 		else if ( newDistanceAttenuationData.iRoomRollOffFactorMax != iDistanceAttenuationData.iRoomRollOffFactorMax )

   222 			{

   223 			iDistanceAttenuationData.iRoomRollOffFactorMax = newDistanceAttenuationData.iRoomRollOffFactorMax;

   224 			event = MDistanceAttenuationObserver::KDistanceAttenuationChanged;

   225 			}

   226 

   227 	if (!event)

   228 		return;

   229 

   230 	for ( TInt i = 0; i < iObservers.Count(); i++ )

   231 		{

   232 		iObservers[i]->EffectChanged(this, event);

   233 		}

   234 	}

   235 

   236 

   237 // ========================== OTHER EXPORTED FUNCTIONS =========================

   238 

   239 

   240 // End of File

   241
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