// Copyright (c) 2006-2009 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:

//

#include "cdevplaycontrol.h"

#include <a3f/maudiocontext.h>

#include <a3f/mbuffersource.h>

#include <a3f/maudiocodec.h>

#include <a3f/maudiogaincontrol.h>

#include <a3f/audioprocessingunittypeuids.h>

// ---------------------------------------------------------------------------

// Default constructor

// ---------------------------------------------------------------------------

//

CDevPlayControl::CDevPlayControl()

	{

	TRACE_CREATE();

	DP_CONTEXT(CDevPlayControl::CDevPlayControl *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	DP_OUT();

	}

// -----------------------------------------------------------------------------

// Symbian 2nd phase constructor

// -----------------------------------------------------------------------------

//

void CDevPlayControl::ConstructL(CDevAudio* aDevAudio, MDevSoundAdaptationObserver& aAdaptationObserver)

	{

	DP_CONTEXT(CDevPlayControl::ConstructL *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	CDevAudioControl::ConstructL(aDevAudio, aAdaptationObserver);

	DP_OUT();

	}

// -----------------------------------------------------------------------------

// Symbian constructor

// -----------------------------------------------------------------------------

//

CDevPlayControl* CDevPlayControl::NewL(CDevAudio* aDevAudio, MDevSoundAdaptationObserver& aDevSoundObserver)

	{

	DP_STATIC_CONTEXT(CDevPlayControl::NewL *CD0*, CtxDevSound, DPLOCAL);

	DP_IN();

	CDevPlayControl* self = new (ELeave) CDevPlayControl();

	CleanupStack::PushL(self);

	self->ConstructL(aDevAudio, aDevSoundObserver);

	CleanupStack::Pop(self);

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

	}

// ---------------------------------------------------------------------------

// Destructor

// ---------------------------------------------------------------------------

//

CDevPlayControl::~CDevPlayControl()

	{

	DP_CONTEXT(CDevPlayControl::~CDevPlayControl *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	DP_OUT();

	}

// -----------------------------------------------------------------------------

// CDevPlayControl::Initialize

// -----------------------------------------------------------------------------

//

TInt CDevPlayControl::Initialize(TUid aFormat)

	{

	DP_CONTEXT(CDevPlayControl::Initialize *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	ASSERT(iDevAudio->iAudioSource && iDevAudio->iAudioCodec && iGainControl);

	TInt err(KErrNone);

	err = iDevAudio->iAudioStream->AddSource(iDevAudio->iAudioSource);

	if (err == KErrNone)

		{

		err = iDevAudio->iAudioStream->AddSink(iDevAudio->iAudioSink);

		if (err == KErrNone)

			{

			err = iDevAudio->iAudioStream->AddAudioCodec(iDevAudio->iAudioCodec);

			}

		}

	if(err == KErrNone && iDevAudio->iActiveState == EDevSoundAdaptorCreated_Uninitialised)

		{

		// Register for notifications

		// Note KErrAlreadyExist is not acceptable as an error, since it shouldn't occurr 

		// It's mandatory unregister any observer when no more events are required

		// Otherwise the notifications will be sent to all previously registered observer

		// when reinitialising for different mode

		err = iDevAudio->iAudioStream->RegisterAudioStreamObserver(*this);

		if (err == KErrNone)

			{

			err = iGainControl->RegisterAudioGainControlObserver(*this);

			if (err == KErrNone)

				{

				err = CacheAudioCodecIf();

				if (err == KErrNone)

					{

					__ASSERT_ALWAYS (iAudioCodecIf,CDevAudioControl::Panic(EAudioCodecIsNull));

					err = iAudioCodecIf->RegisterAudioCodecObserver(*this);

					if(err == KErrNone)

						{

						err = iAudioCodecIf->SetFormat(aFormat);

						if (err == KErrNone)

							{

							// Needed to get ProcessingUnitError notification 

							err = iDevAudio->iAudioCodec->RegisterProcessingUnitObserver(*this);

							}

						}

					}

				}

			}

		if (err != KErrNone)

			{

			DP0(DLINFO,"Error while registering observers");

			iDevAudio->iAudioStream->UnregisterAudioStreamObserver(*this);

			iGainControl->UnregisterAudioGainControlObserver(*this);

			if(iAudioCodecIf)

				{

				iAudioCodecIf->UnregisterAudioCodecObserver(*this);

				iAudioCodecIf = NULL; // Not owned here: convenience pointer, so no need to delete

				}

			}

		if (err == KErrNone)

			{

			err = iDevAudio->iAudioStream->Initialize();

			if (err == KErrNone)

				{

				err = iDevAudio->iAudioContext->Commit();

				if (err == KErrNone)

					{

					iDevAudio->iActiveState = EDevSoundAdaptorInitialising;

					}

				}

			}

		}

	DP0_RET(err,"%d");

	}

// -----------------------------------------------------------------------------

// CDevPlayControl::ProcessInit

// -----------------------------------------------------------------------------

//

TInt CDevPlayControl::ProcessInit()

	{

	DP_CONTEXT(CDevPlayControl::ProcessInit *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	PRF(PRF_ID, PRF_START, PRF_TIME, AA_DS_PlayInit, "");

	PRF(PRF_ID, PRF_START, PRF_LOAD, AA_DS_Play, "");

	TInt err(KErrNone);

	switch (iDevAudio->iActiveState)

		{

		case EDevSoundAdaptorInitialised_Initialised:

			{

			TAny* interface(NULL);

			// get correct BufferSource interface of DevAudio::iAudioSource

			interface = iDevAudio->iAudioSource->Interface(KUidMmfBufferSource);

			if (interface == NULL)

				{

				DP0_RET(KErrNotSupported, "Incorrect source type! %d");

				}

			else

				{

				iBufferSource = static_cast<MMMFBufferSource*>(interface);

				iBufferSource->SetDataSupplier(*this);

				if (iDevAudio->IsPrioritySet())

					{

					TAudioTypeSettings priority;

					iDevAudio->GetPrioritySettings(priority);

					err = iDevAudio->iAudioStream->SetAudioType(priority);

					}				

				}

			if ( err == KErrNone)

				{

				err = iDevAudio->iAudioStream->Load();

				}

			if ( err == KErrNone)

				{

				err = iDevAudio->iAudioContext->Commit();

				}

			if(err == KErrNone)

				{

				iDevAudio->iActiveState = EDevSoundAdaptorLoading;

				}

			}

			break;

		case EDevSoundAdaptorPaused_Primed:

		case EDevSoundAdaptorInitialised_Idle:

			err = iDevAudio->RequestGainAndBalance(this);

			if (err==KErrNone)

				{

				err = iDevAudio->iAudioStream->Activate();

				}

			if (err == KErrNone)

				{

				err = iDevAudio->iAudioContext->Commit();

				}

			if (err == KErrNone)

				{

				iDevAudio->iActiveState = EDevSoundAdaptorActivating;

				}

			break;

		case EDevSoundAdaptorActive_Active:

			// Deliberate fall through - set err=KErrNotReady for PlayInit when already active

		default:

			err = KErrNotReady;

			break;

		}

	if(err == KErrNone)

		{

		iDevAudio->iStop = EFalse;

		}

	DP0_RET(err,"%d");

	}

// -----------------------------------------------------------------------------

// CDevPlayControl::ProcessData

// -----------------------------------------------------------------------------

//

void CDevPlayControl::ProcessData()

	{

	DP_CONTEXT(CDevPlayControl::ProcessData *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	TInt err(KErrNone);

	if(!iDevAudio->iStop)

		{

		err = iBufferSource->BufferFilled(iBuffer);

		if ( err != KErrNone)

			{

			iErrorCondition = err;

			Stop();

			}

		}

	DP_OUT();

	}

// -----------------------------------------------------------------------------

// From class MAudioDataSupplier

// CDevPlayControl::BufferToBeFilled

// -----------------------------------------------------------------------------

//

void CDevPlayControl::BufferToBeFilled(MMMFBufferSource* aSource, CMMFBuffer* aBuffer)

	{

	DP_CONTEXT(CDevPlayControl::BufferToBeFilled *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	PRF(PRF_ID, PRF_STOP, PRF_TIME, AA_DS_PlayInit, "");

	__ASSERT_ALWAYS(iBufferSource==aSource, CDevAudioControl::Panic(EBufferMismatch));

	iAdaptationObserver->BufferToBeFilled(aBuffer);

	iBuffer = aBuffer;

	DP_OUT();

	}

// -----------------------------------------------------------------------------

// From class MAudioDataSupplier

// CDevPlayControl::DiscardBuffers

// -----------------------------------------------------------------------------

//

void CDevPlayControl::DiscardBuffers(MMMFBufferSource* /*aSource*/)

	{

	DP_CONTEXT(CDevPlayControl::DiscardBuffers *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	DP_OUT();

	}

// -----------------------------------------------------------------------------

// CDevPlayControl::ProcessingFinished

// -----------------------------------------------------------------------------

//

void CDevPlayControl::ProcessingFinished(MAudioStream& /*aStream*/)

	{

	DP_CONTEXT(CDevPlayControl::ProcessingFinished *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	PRF(PRF_ID, PRF_STOP, PRF_LOAD, AA_DS_Play, "");

	if(iCallbackFromAdaptor == KCallbackNone)

		{

		iCallbackFromAdaptor = KCallbackProcessingFinished;

		iAdaptationObserver->CallbackFromAdaptorReceived(iCallbackFromAdaptor, KErrNone);

		}

	else

		{

		// Multiple callbacks from adaptor

		DP0(DLERR, "Multiple callbacks from adaptor");

		}

	DP_OUT();

	}

// -----------------------------------------------------------------------------

// CDevPlayControl::ProcessingFinishedReceived

// -----------------------------------------------------------------------------

//

TInt CDevPlayControl::ProcessingFinishedReceived(TBool& aAyncOperation)

	{

	DP_CONTEXT(CDevPlayControl::ProcessingFinishedReceived *CD1*, CtxDevSound, DPLOCAL);

	DP_IN();

	aAyncOperation = EFalse;

	TInt err = iDevAudio->iAudioStream->Stop();

	if ( err == KErrNone)

		{

		err = iDevAudio->iAudioContext->Commit();

		if(err == KErrNone)

			{

			iDevAudio->iActiveState = EDevSoundAdaptorStopping;

			aAyncOperation = ETrue;

			}

		}

	// Something was wrong, clear the flag.

	if (err != KErrNone)

		{

		iCallbackFromAdaptor = KCallbackNone;

		}

	DP0_RET(err,"%d");

	}

// -----------------------------------------------------------------------------

// CDevPlayControl::BufferErrorEvent

// -----------------------------------------------------------------------------

//

void CDevPlayControl::BufferErrorEvent()

	{

	ProcessingUnitError(NULL,KErrNoMemory);

	}

// -----------------------------------------------------------------------------

// CDevPlayControl::FinishWithError

// -----------------------------------------------------------------------------

//

void CDevPlayControl::FinishWithError(TInt aError)

    {

    iAdaptationObserver->PlayError(aError);

    }

// ---------------------------------------------------------------------------

// CDevPlayControl::ProcessingError

// ---------------------------------------------------------------------------

TInt CDevPlayControl::ProcessingError(TBool& aAyncOperation)

    {

    TInt err = ProcessingFinishedReceived(aAyncOperation);

    return err;

    }

// End of file