javauis/mmapi_akn/baseline/src/cmmammfratecontrol.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 03 May 2010 12:27:20 +0300
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permissions -rw-r--r--
Revision: v2.1.22 Kit: 201018
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/*
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* Copyright (c) 2002 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:  This class implements generic RateControl functionality.
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*
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*/
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//  INCLUDE FILES
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#include <jdebug.h>
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#include <e32base.h>
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#include "cmmammfratecontrol.h"
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namespace
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{
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const TInt KErrorMessageSize = 32;
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_LIT(KErrDefaultError, "Symbian OS Error: %d");
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}
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CMMAMMFRateControl* CMMAMMFRateControl::NewL(CMMAMMFPlayerBase* aPlayer)
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{
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    CMMAMMFRateControl* self = new(ELeave) CMMAMMFRateControl(aPlayer);
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop();
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    return self;
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}
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CMMAMMFRateControl::~CMMAMMFRateControl()
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{
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    DEBUG("MMA:CMMAMMFRateControl::~CMMAMMFRateControl");
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}
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CMMAMMFRateControl::CMMAMMFRateControl(CMMAMMFPlayerBase* aPlayer) :
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        iPlayer(aPlayer), iCurrentRate(KMMADefaultRate)
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{
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    DEBUG("MMA:CMMAMMFRateControl::CMMAMMFRateControl");
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}
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void CMMAMMFRateControl::ConstructL()
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{
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    iPlayer->AddStateListenerL(this);
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}
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void CMMAMMFRateControl::StateChanged(TInt aState)
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{
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    DEBUG("MMA:CMMAMMFRateControl::StateChanged");
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    if (aState == CMMAPlayer::EStarted && iCurrentRate == KMMAMinRate)
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    {
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        RMMFController& controller = iPlayer->Controller();
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        TInt err = controller.Pause();
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        if ((err != KErrNone) && (err != KErrNotReady))
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        {
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            DEBUG_INT("CMMAMMFRateControl::StateChanged: Pause error %d", err);
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            TBuf<KErrorMessageSize> errorMessage;
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            errorMessage.Format(KErrDefaultError, err);
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            iPlayer->PostStringEvent(CMMAPlayerEvent::EError, errorMessage);
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        }
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    }
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}
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TInt CMMAMMFRateControl::SetRateL(TInt aRate)
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{
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    DEBUG("MMA:CMMAMMFRateControl::SetRateL");
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    RMMFController& controller = iPlayer->Controller();
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    TInt newRate;
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    if (aRate <= KMMAMinRate)
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    {
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        newRate = KMMAMinRate;
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    }
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    else
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    {
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        newRate = KMMADefaultRate;
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    }
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    if ((iPlayer->State() == CMMAPlayer::EStarted) &&
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            (newRate != iCurrentRate))
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    {
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        if (newRate == KMMAMinRate)
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        {
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            TInt err = controller.Pause();
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            if ((err != KErrNone) && (err != KErrNotReady))
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            {
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                User::Leave(err);
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            }
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        }
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        else
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        {
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            User::LeaveIfError(controller.Play());
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        }
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    }
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    iCurrentRate = newRate;
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    return iCurrentRate;
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}
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TInt CMMAMMFRateControl::RateL()
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{
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    return iCurrentRate;
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}
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//  END OF FILE