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os/mm/mmhais/a3facl/src/audiocontext/audiocontext.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 //audiocontext.cpp

     2 

     3 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     4 // All rights reserved.

     5 // This component and the accompanying materials are made available

     6 // under the terms of "Eclipse Public License v1.0"

     7 // which accompanies this distribution, and is available

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

     9 //

    10 // Initial Contributors:

    11 // Nokia Corporation - initial contribution.

    12 //

    13 // Contributors:

    14 //

    15 // Description:

    16 //

    17 

    18 

    19 

    20 #include <a3f/maudiostream.h>

    21 #include <a3f/maudiocodec.h>

    22 #include <a3f/maudiogaincontrol.h>

    23 #include <a3f/a3fbase.h>

    24 

    25 #include "audiocontext.h"

    26 #include "audioprocessingunit.h"

    27 #include "logicalaudiostream.h"

    28 #include "audiostreammanager.h"

    29 

    30 

    31 // ---------------------------------------------------------------------------

    32 // Default constructor

    33 // ---------------------------------------------------------------------------

    34 //

    35 CAudioContext::CAudioContext() 

    36 	{

    37 	TRACE_CREATE();

    38 	DP_CONTEXT(CAudioContext::CAudioContext *CD1*, CtxDevSound, DPLOCAL);

    39 	DP_IN();

    40 	iInCommit = EFalse;

    41 	DP_OUT();

    42 	}

    43 	

    44 // ---------------------------------------------------------------------------

    45 // Symbian 2nd phase constructor

    46 // ---------------------------------------------------------------------------

    47 void CAudioContext::ConstructL()

    48 	{

    49 	DP_CONTEXT(CAudioContext::ConstructL *CD1*, CtxDevSound, DPLOCAL);

    50 	DP_IN();

    51 

    52 	// Setup Multimedia Resource Control

    53 	User::LeaveIfError(iMMRC.Open(*this));

    54 	User::LeaveIfError(iCriticalSection.CreateLocal());

    55 	DP_OUT();

    56 	}

    57 

    58 // ---------------------------------------------------------------------------

    59 // Symbian constructor

    60 // ---------------------------------------------------------------------------

    61 EXPORT_C  CAudioContext* CAudioContext::NewL()

    62 	{

    63 	DP_STATIC_CONTEXT(CAudioContext::NewL *CD0*, CtxDevSound, DPLOCAL);

    64 	DP_IN();

    65 	CAudioContext* self = new(ELeave)CAudioContext();

    66 	CleanupStack::PushL(self);

    67 	self->ConstructL();

    68 	CleanupStack::Pop(self);

    69 	DP0_RET(self, "0x%x");

    70 	}

    71 	

    72 // ---------------------------------------------------------------------------

    73 // Destructor

    74 // ---------------------------------------------------------------------------

    75 //

    76 EXPORT_C CAudioContext::~CAudioContext()

    77 	{

    78 	DP_CONTEXT(CAudioContext::~CAudioContext *CD1*, CtxDevSound, DPLOCAL);

    79 	DP_IN();

    80 	iMMRC.Close();	

    81 	iAudioContextObservers.Close();

    82 	iAudioProcessingUnits.Close();

    83 	if (iActualChain)

    84 		{

    85 		iActualChain->Release();

    86 		};

    87 	iCriticalSection.Close();

    88 	DP_OUT();

    89 	}

    90 	

    91 // ---------------------------------------------------------------------------

    92 // From class MAudioContext

    93 // CAudioContext::SetClientSettings

    94 // ---------------------------------------------------------------------------

    95 //

    96 TInt CAudioContext::SetClientSettings(const TClientContextSettings& aSettings)

    97 	{

    98 	DP_CONTEXT(CAudioContext::SetClientSettings *CD1*, CtxDevSound, DPLOCAL);

    99 	DP_IN();

   100 	TInt err(KErrNone);

   101 	iClientSettings = aSettings;

   102 	if( iContextId.Id() == 0 )

   103 		{

   104 		TUint64 id = iMMRC.LogOn(iClientSettings.iProcessId);

   105 		TAudioContextId temp(id);

   106 		iContextId = temp;

   107 		}

   108 	else

   109 		{

   110 		err = KErrAlreadyExists;

   111 		}

   112 	DP0_RET(err, "%d");

   113 	}

   114 

   115 

   116 // ---------------------------------------------------------------------------

   117 // From class MAudioContext

   118 // CAudioContext::GetContextId

   119 // ---------------------------------------------------------------------------

   120 //

   121 TAudioContextId CAudioContext::ContextId() const 

   122 	{

   123 	DP_CONTEXT(CAudioContext::ContextId *CD1*, CtxDevSound, DPLOCAL);

   124 	DP_IN();

   125 	DP_OUT();

   126 	return iContextId;

   127 	}

   128 

   129 // ---------------------------------------------------------------------------

   130 // From class MAudioContext

   131 // CAudioContext::Commit

   132 // ---------------------------------------------------------------------------

   133 //

   134 TInt CAudioContext::Commit()

   135 	{

   136 	DP_CONTEXT(CAudioContext::Commit *CD1*, CtxDevSound, DPLOCAL);

   137 	DP_IN();

   138 	TInt err(KErrNone);

   139 	iInCommit = ETrue;

   140 	

   141 	if (iClientSettings.iProcessId.Id() == 0)

   142 		{

   143 		DP0_RET(KErrNotReady, "%d");

   144 		}

   145 

   146 	err = iMMRC.SendResourceRequest(iActualChain, iDesiredChain, this);

   147 	DP0_RET(err, "%d");

   148 	}

   149 

   150 // ---------------------------------------------------------------------------

   151 // From class MAudioContext

   152 // CAudioContext::CreateAudioStream

   153 // ---------------------------------------------------------------------------

   154 //

   155 TInt CAudioContext::CreateAudioStream(MAudioStream *&aStream) 

   156 	{

   157 	DP_CONTEXT(CAudioContext::CreateAudioStream *CD1*, CtxDevSound, DPLOCAL);

   158 	DP_IN();

   159 	TInt err(KErrNone);

   160 

   161 	CAudioStreamManager* manager(NULL);

   162 

   163 	// Create desired logical chain

   164 	TRAP(err, manager = CAudioStreamManager::NewL(KUidAudioStream));

   165 	if(err == KErrNone)

   166 		{

   167 		aStream = static_cast<MAudioStream*>(manager);

   168 

   169 		// Use this as desired chain (this is the one that the client modify)

   170 		CLogicalAudioStream* logicalAudioStream = static_cast<CLogicalAudioStream*>(aStream);

   171 		iDesiredChain = static_cast<MLogicalChain*>(logicalAudioStream); 

   172 		logicalAudioStream->SetParentContext(*this);

   173 		if (iActualChain)

   174 			{

   175 			iActualChain->Release();

   176 			iActualChain=NULL;

   177 			}

   178 		TRAP(err, iActualChain = iDesiredChain->CloneL());

   179 		}

   180 	DP0_RET(err, "%d");

   181 	}

   182 

   183 // ---------------------------------------------------------------------------

   184 // From class MAudioContext

   185 // CAudioContext::DeleteAudioStream

   186 // ---------------------------------------------------------------------------

   187 //

   188 void CAudioContext::DeleteAudioStream(MAudioStream *&aStream)

   189 	{

   190 	DP_CONTEXT(CAudioContext::DeleteAudioStream *CD1*, CtxDevSound, DPLOCAL);

   191 	DP_IN();

   192 	CAudioStreamManager* manager = static_cast<CAudioStreamManager*>(aStream);

   193 	delete manager;

   194 	DP_OUT();

   195 	}

   196 

   197 // ---------------------------------------------------------------------------

   198 // From class MAudioContext

   199 // CAudioContext::CreateAudioProcessingUnit

   200 // ---------------------------------------------------------------------------

   201 //

   202 TInt CAudioContext::CreateAudioProcessingUnit(TUid aTypeId, MAudioProcessingUnit *&aProcessingUnit)

   203 	{

   204 	DP_CONTEXT(CAudioContext::CreateAudioProcessingUnit *CD1*, CtxDevSound, DPLOCAL);

   205 	DP_IN();

   206 	TInt err(KErrNone);

   207 	TAudioComponentId unitInstance = GetAndSetInstanceID();

   208 	

   209 	CAudioProcessingUnit* pUnit=NULL;

   210 	TComponentParameters cParameters;

   211 	cParameters.iTypeUid = aTypeId;

   212 	cParameters.iInstanceId = unitInstance;

   213 	cParameters.iContextId = iContextId;

   214 	cParameters.iSettingsObserver = this;

   215 	

   216 	TRAP(err, pUnit = CAudioProcessingUnit::NewL(cParameters));

   217 	if (err==KErrNone)

   218 		{

   219 		aProcessingUnit = static_cast<MAudioProcessingUnit*>(pUnit);

   220 		err = iAudioProcessingUnits.Append(aProcessingUnit);

   221 		if(err!=KErrNone)

   222 			{

   223 			delete pUnit;

   224 			aProcessingUnit = NULL;

   225 			}

   226 		}

   227 	DP0_RET(err, "%d");

   228 	}

   229 

   230 // ---------------------------------------------------------------------------

   231 // From class MAudioContext

   232 // CAudioContext::DeleteAudioProcessingUnit

   233 // ---------------------------------------------------------------------------

   234 //

   235 void CAudioContext::DeleteAudioProcessingUnit(

   236 	MAudioProcessingUnit *&aProcessingUnit)

   237 	{

   238 	DP_CONTEXT(CAudioContext::DeleteAudioProcessingUnit *CD1*, CtxDevSound, DPLOCAL);

   239 	DP_IN();

   240 	DP_OUT();

   241 	CAudioProcessingUnit* cUnit = static_cast<CAudioProcessingUnit*>(aProcessingUnit);

   242 	TAudioComponentId param = aProcessingUnit->InstanceId();

   243 	TUint count= iAudioProcessingUnits.Count();

   244 		

   245 	for ( TUint i(0); i < count; i++ )

   246 		{

   247 		// find and delete component

   248 		if( iAudioProcessingUnits[i]->InstanceId() == param)

   249 			{

   250 			iAudioProcessingUnits.Remove(i);

   251 			delete cUnit;

   252 			break;

   253 			}

   254 		}

   255 	}

   256 

   257 // ---------------------------------------------------------------------------

   258 // From class MAudioContext

   259 // CAudioContext::RegisterAudioContextObserver

   260 // ---------------------------------------------------------------------------

   261 //

   262 TInt CAudioContext::RegisterAudioContextObserver(

   263 	MAudioContextObserver& aObserver)

   264 	{

   265 	DP_CONTEXT(CAudioContext::RegisterAudioContextObserver *CD1*, CtxDevSound, DPLOCAL);

   266 	DP_IN();

   267 	TInt err = iAudioContextObservers.Find(&aObserver);

   268 	if( err != KErrNotFound )

   269 		{

   270 		err = KErrAlreadyExists;

   271 		}

   272 	else

   273 		{

   274 		err = iAudioContextObservers.Append(&aObserver);

   275 		}

   276 	DP0_RET(err, "%d");

   277 	}

   278 

   279 // ---------------------------------------------------------------------------

   280 // From class MAudioContext

   281 // CAudioContext::UnregisterAudioContextObserver

   282 // ---------------------------------------------------------------------------

   283 //

   284 void CAudioContext::UnregisterAudioContextObserver(

   285 	MAudioContextObserver& aObserver)

   286 	{

   287 	DP_CONTEXT(CAudioContext::UnregisterAudioContextObserver *CD1*, CtxDevSound, DPLOCAL);

   288 	DP_IN();

   289 	

   290 	TInt idxOrErr = iAudioContextObservers.Find(&aObserver);

   291 	if( idxOrErr != KErrNotFound )

   292 		{

   293 		iAudioContextObservers.Remove(idxOrErr);

   294 		}

   295 	DP_OUT();

   296 	}

   297 

   298 // ---------------------------------------------------------------------------

   299 // From class MAudioContext

   300 // CAudioContext::Interface

   301 // ---------------------------------------------------------------------------

   302 //

   303 TAny* CAudioContext::Interface(TUid aType)

   304 	{

   305 	DP_CONTEXT(CAudioContext::Interface *CD1*, CtxDevSound, DPLOCAL);

   306 	DP_IN();

   307 	TAny* interface = NULL;

   308 	if(aType == KUIdAudioResourceNotification)

   309 		{

   310 		#ifndef SYMBIAN_DISABLE_ARN

   311 		interface = static_cast<MA3FDevSoundAutoPauseResume*>(this);

   312 		#else

   313 		interface = NULL;

   314 		#endif

   315 		}

   316 	else

   317 		{

   318 		interface = NULL;

   319 		}

   320 	DP_OUT();

   321 	return interface;

   322 	}

   323 

   324 

   325 // ---------------------------------------------------------------------------

   326 // From class MAudioContext

   327 // CAudioContext::Reset

   328 // ---------------------------------------------------------------------------

   329 //

   330 TInt CAudioContext::Reset()

   331 	{

   332 	DP_CONTEXT(CAudioContext::Reset *CD1*, CtxDevSound, DPLOCAL);

   333 	DP_IN();

   334 	TInt err = KErrNone;

   335 	if (iInCommit)

   336 		{

   337 		err = KErrNotReady;

   338 		}

   339 	iDesiredChain->ResetMessage();

   340 	iDesiredChain->CopySettings(*iActualChain);

   341 	DP0_RET(err, "%d");

   342 	}

   343 

   344 // ---------------------------------------------------------------------------

   345 // From class MMultimediaResourceControlObserver

   346 // CAudioContext::ReceiveResourceResponse

   347 // ---------------------------------------------------------------------------

   348 //

   349 void CAudioContext::ReceiveResourceResponse(MLogicalChain* aAppliedChain, TInt aError)

   350 	{

   351 	DP_CONTEXT(CAudioContext::ReceiveResourceResponse *CD1*, CtxDevSound, DPLOCAL);

   352 	DP_IN();

   353 	

   354 	iCriticalSection.Wait();

   355 	iMsgVersion++;

   356 	iMMRC.ResetMessages();

   357 	iCriticalSection.Signal();

   358 	

   359 	if ( aError == KErrNone || iPreempted )

   360 		{

   361 		if ( iPreempted )

   362 			{

   363 			iPreempted = EFalse;

   364 			}

   365 		// Desired chain was commited succesfully

   366 		TInt err;

   367 		MLogicalChain* lc = NULL;

   368 		TRAP(err, lc = aAppliedChain->CloneL());

   369 		DP1(DLERR,"ECloneLeftWhenReceivingResourceResponse %d", err);

   370 		__ASSERT_DEBUG(err == KErrNone, Panic(ECloneLeftWhenReceivingResourceResponse));

   371 		if ( iActualChain )

   372 			{

   373 			iActualChain->Release();

   374 			}

   375 		iActualChain = lc;

   376 		}

   377 	else

   378 		{

   379 		iDesiredChain->CopySettings(*iActualChain);

   380 		}

   381 	iDesiredChain->ResetMessage();

   382 	ContextEventSignal(KUidA3FContextUpdateComplete, aError);

   383 	iInCommit = EFalse;

   384 	DP_OUT();

   385 	}

   386 

   387 // ---------------------------------------------------------------------------

   388 // From class MMultimediaResourceControlObserver

   389 // CAudioContext::ReceiveResourceUpdate

   390 // ---------------------------------------------------------------------------

   391 //

   392 void CAudioContext::ReceiveResourceUpdate(MLogicalChain* /*aMessage*/, TInt aError)

   393 	{

   394 	DP_CONTEXT(CAudioContext::ReceiveResourceUpdate *CD1*, CtxDevSound, DPLOCAL);

   395 	DP_IN();

   396 	ContextEventSignal(KUidA3FContextCommitUpdate, aError);	

   397 	DP_OUT();

   398 	}

   399 

   400 

   401 // ---------------------------------------------------------------------------

   402 // From class MMultimediaResourceControlObserver

   403 // CAudioContext::ReceivePreemptionUpdate

   404 // ---------------------------------------------------------------------------

   405 //

   406 void CAudioContext::ReceivePreemptionUpdate(MLogicalChain* /*aMessage*/, TInt aError)

   407 	{

   408 	DP_CONTEXT(CAudioContext::ReceivePreemptionUpdate *CD1*, CtxDevSound, DPLOCAL);

   409 	DP_IN();

   410 	iPreempted = ETrue;

   411 	if(iInCommit)

   412 		{

   413 		// Send only one callback

   414 		ContextEventSignal(KUidA3FContextPreEmptedCommit, aError);

   415 		}

   416 	else

   417 		{

   418 		// Send two callbacks

   419 		ContextEventSignal(KUidA3FContextPreEmption, aError);

   420 		ContextEventSignal(KUidA3FContextPreEmptionUpdate, aError);

   421 		}

   422 	DP_OUT();

   423 	}

   424 

   425 

   426 // ---------------------------------------------------------------------------

   427 // From class MLogicalSettingObserver

   428 // CAudioContext::ReceiveComponentSettingsChange

   429 // ---------------------------------------------------------------------------

   430 void CAudioContext::ReceiveComponentSettingsChange(TUid /*aId*/, TMMRCMessageType aMessageType)

   431 	{

   432 	iDesiredChain->SetMessageType(aMessageType);

   433 	}

   434 

   435 // ---------------------------------------------------------------------------

   436 // Internals

   437 // CAudioContext::GetAndSetInstanceID

   438 // ---------------------------------------------------------------------------

   439 TAudioComponentId CAudioContext::GetAndSetInstanceID()

   440 	{

   441 	DP_CONTEXT(CAudioContext::GetAndSetInstanceID *CD1*, CtxDevSound, DPLOCAL);

   442 	DP_IN();

   443 	TUint id(1); // start ID count from 1

   444 	TAudioComponentId idComponent(1);

   445 	TUint count = iAudioProcessingUnits.Count();

   446 	if ( count < KMaxTUint )

   447 		{

   448 		id = ++count;

   449 		}

   450 	idComponent = id;

   451 	DP_OUT();

   452 	return idComponent;

   453 	}

   454 

   455 // ---------------------------------------------------------------------------

   456 // Internals

   457 // CAudioContext::ContextEventSignal

   458 // ---------------------------------------------------------------------------

   459 void CAudioContext::ContextEventSignal(TUid aEvent, TInt aError)

   460 	{

   461 	DP_CONTEXT(CAudioContext::ContextEventSignal *CD1*, CtxDevSound, DPLOCAL);

   462 	DP_IN();

   463 	TUint count = iAudioContextObservers.Count();

   464 	for ( TUint idx(0); idx < count; idx++ )

   465 		{

   466 		iAudioContextObservers[idx]->ContextEvent(aEvent, aError);

   467 		}

   468 	DP_OUT();

   469 	}

   470 

   471 // ---------------------------------------------------------------------------

   472 // CAudioContext::GetLogicalChain

   473 // ---------------------------------------------------------------------------

   474 EXPORT_C MLogicalChain* CAudioContext::GetLogicalChain(TInt aIndex)

   475 	{

   476 	DP_CONTEXT(CAudioContext::GetLogicalChain *CD1*, CtxDevSound, DPLOCAL);

   477 	DP_IN();

   478 	MLogicalChain* logChain = NULL;

   479 	if (aIndex == 0)

   480 		{

   481 		logChain = iDesiredChain;

   482 		}

   483 	else

   484 		{

   485 		logChain = iActualChain;

   486 		}

   487 	DP_OUT();

   488 	return logChain;

   489 	}

   490 

   491 

   492 // ---------------------------------------------------------------------------

   493 // CAudioContext::RegisterAsClient

   494 // ---------------------------------------------------------------------------

   495 TInt CAudioContext::RegisterAsClient(TUid aEventType, const TDesC8& aNotificationRegistrationData, MA3FDevSoundAutoPauseResumeObserver* aObserverPtr)

   496 	{

   497 	DP_CONTEXT(CAudioContext::RegisterAsClient *CD1*, CtxDevSound, DPLOCAL);

   498 	DP_IN();

   499 	TInt err(KErrNone);

   500 	iObserverPtr = aObserverPtr;

   501 	err = iMMRC.RegisterAsClient(aEventType, aNotificationRegistrationData);

   502 	DP0_RET(err, "%d");

   503 	}

   504 

   505 // ---------------------------------------------------------------------------

   506 // CAudioContext::CancelRegisterAsClient

   507 // ---------------------------------------------------------------------------

   508 TInt CAudioContext::CancelRegisterAsClient(TUid aEventType)

   509 	{

   510 	DP_CONTEXT(CAudioContext::CancelRegisterAsClient *CD1*, CtxDevSound, DPLOCAL);

   511 	DP_IN();

   512 	TInt err(KErrNone);

   513 	err = iMMRC.CancelRegisterAsClient(aEventType);

   514 	DP0_RET(err, "%d");

   515 	}

   516 	

   517 // ---------------------------------------------------------------------------

   518 // CAudioContext::WillResumePlay

   519 // ---------------------------------------------------------------------------

   520 TInt CAudioContext::WillResumePlay()

   521 	{

   522 	DP_CONTEXT(CAudioContext::WillResumePlay *CD1*, CtxDevSound, DPLOCAL);

   523 	DP_IN();

   524 	TInt err(KErrNone);

   525 	err = iMMRC.WillResumePlay();

   526 	DP0_RET(err, "%d");

   527 	}

   528 	

   529 // ---------------------------------------------------------------------------

   530 // From class MMultimediaResourceControlObserver

   531 // CAudioContext::CanResume

   532 // ---------------------------------------------------------------------------

   533 //

   534 void CAudioContext::CanResume()

   535 	{

   536 	DP_CONTEXT(CAudioContext::CanResume *CD1*, CtxDevSound, DPLOCAL);

   537 	DP_IN();

   538 	if(iObserverPtr)

   539 		{

   540 		iObserverPtr->NotifyResume();

   541 		}	

   542 	DP_OUT();

   543 	}

   544 

   545 void CAudioContext::Panic(TAudioContextPanicCodes aCode)

   546 	{

   547 	User::Panic(KAudioContextPanicCategory, aCode);

   548 	}

   549 	

   550 EXPORT_C TInt CAudioContext::MsgVersion()

   551 	{

   552 	return iMsgVersion;

   553 	}

   554 	

   555 EXPORT_C RCriticalSection& CAudioContext::CriticalSection()

   556 	{

   557 	return iCriticalSection;

   558 	}

   559 // End of file
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