--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/amms_qt/mmacontrol/src.emc/cammsemcaudiovirtualizercontrol.cpp	Fri May 14 15:47:24 2010 +0300
@@ -0,0 +1,324 @@
+/*
+* Copyright (c) 2005-2007 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:  Virtualizes audio channels.
+*
+*/
+
+
+
+// INCLUDE FILES
+#include <logger.h>
+#include "cammsemcaudiovirtualizercontrol.h"
+
+
+// CONSTANTS
+const TInt KAMMSEMCDefaultStereoWideningLevel = 100;
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::NewLC
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+CAMMSEMCAudioVirtualizerControl* CAMMSEMCAudioVirtualizerControl::NewLC(
+    CMMAPlayer* aPlayer)
+{
+    CAMMSEMCAudioVirtualizerControl* self =
+        new(ELeave) CAMMSEMCAudioVirtualizerControl(aPlayer);
+
+    CleanupStack::PushL(self);
+    self->ConstructL();
+
+    return self;
+}
+
+// Destructor
+CAMMSEMCAudioVirtualizerControl::~CAMMSEMCAudioVirtualizerControl()
+{
+    LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl::~CAMMSEMCAudioVirtualizerControl");
+
+    // Perform DeallocateControl, if the state change has not yet performed it.
+    DeallocateControl();
+    if (iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility)
+        delete iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility;
+    delete iPresetNames;
+
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::SetPresetL
+// Sets the effect according to the given preset.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCAudioVirtualizerControl::SetPresetL(const TDesC& aPreset)
+{
+
+    LOG1( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl::SetPresetL \"%S\"",
+              aPreset.Ptr());
+    CStereoWidening *iStereoWidening = NULL;
+    iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->PrepareEmptyStereoWideningUtilitiesL();
+    iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->GetPresetNamesL(*iPresetNames);
+    TInt presetPosition = 0;
+    TInt findPreset = iPresetNames->Find(aPreset, presetPosition);
+    if (findPreset == 0)  // Find returns zero, if a matching element is found.
+    {
+        iStereoWidening = iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->GetStereoWideningAtPresetIndexL(presetPosition);
+        iCurrentPreset = presetPosition;
+    }
+    else
+    {
+        iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->DeleteEmptyStereoWideningUtilities();
+        User::Leave(KErrArgument);
+    }
+
+    if (!iStereoWidening)
+    {
+        iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->DeleteEmptyStereoWideningUtilities();
+        return;
+    }
+    //Get all preset data here
+    TUint8 iStereoWideningLevel = iStereoWidening->StereoWideningLevel();
+    // Set all preset data to EMC
+    iMStereoWideningControl->SetStereoWideningLevel(iStereoWideningLevel);
+    iMStereoWideningControl->Apply();
+    iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->DeleteEmptyStereoWideningUtilities();
+    LOG1( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl::SetPresetL \"%S\" GetPresetL OK",
+              aPreset.Ptr());
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::PresetNamesL
+// Gets the available preset names.
+// -----------------------------------------------------------------------------
+//
+const CDesCArray& CAMMSEMCAudioVirtualizerControl::PresetNamesL()
+{
+    // Returns an array of all preset names (pre-defined and user-defined).
+    // The pre-defined presets are in the beginning of the list.
+    iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->PrepareEmptyStereoWideningUtilitiesL();
+    iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->GetPresetNamesL(*iPresetNames);
+    iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->DeleteEmptyStereoWideningUtilities();
+    return *iPresetNames;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::PresetL
+// Gets the current preset.
+// -----------------------------------------------------------------------------
+//
+const TDesC& CAMMSEMCAudioVirtualizerControl::PresetL()
+{
+    //if no preset is set, return null
+    if (iCurrentPreset < 0)
+    {
+        return KNullDesC;
+    }
+
+    else
+    {
+        // Retrieves a Preset with the given index from the utility class
+        iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->PrepareEmptyStereoWideningUtilitiesL();
+        iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->GetPresetAtIndexL(iPresetName , iCurrentPreset);
+        iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->DeleteEmptyStereoWideningUtilities();
+        return iPresetName;
+    }
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::SetEnabledL
+// Enables/disables the effect.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCAudioVirtualizerControl::SetEnabledL(TBool aEnable)
+{
+    if (aEnable)
+    {
+        // Enable the effect.
+        LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl::SetEnabledL(true).");
+        iMStereoWideningControl->Enable();
+        iMStereoWideningControl->SetStereoWideningLevel(KAMMSEMCDefaultStereoWideningLevel);
+        iMStereoWideningControl->Apply();
+    }
+    else
+    {
+        // Disable the effect
+
+        LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl::SetEnabledL(false).");
+        iMStereoWideningControl->Disable();
+    }
+
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::PrepareControlL
+// Function which is called after the correct state is set in Player.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCAudioVirtualizerControl::PrepareControlL()
+{
+    // Perform the action only for the first time, skip if called afterwards
+    if (!iMStereoWideningControl)
+    {
+        LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl::PrepareControlL");
+        //Create AudioVirtualizer Effect Control
+        iStreamControl = (static_cast<CMMAEMCAudioPlayer*>(iMMAPlayer))->StreamControl();
+        iFactory = (static_cast<CMMAEMCAudioPlayer*>(iMMAPlayer))->MMFactory();
+
+        MEffectControl* temp(NULL);
+        User::LeaveIfError(iFactory->CreateEffectControl(KStereoWideningEffectControl, temp));
+        iMStereoWideningControl  = static_cast<MStereoWideningControl*>(temp);
+        User::LeaveIfError(iStreamControl->AddEffect(*iMStereoWideningControl));
+    }
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::DeallocateControl
+// Function which is called after the correct state is set in Player.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCAudioVirtualizerControl::DeallocateControl()
+{
+
+    if (iMStereoWideningControl)
+    {
+        LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl::DeallocateControl");
+
+        // StereoWidening for Audio can be disabled or enabled
+        TRAPD(err,iMStereoWideningControl->Disable());
+        if (err != KErrNone)
+        {
+            //Some EMC Error
+            ELOG1( EJavaAMMS, "AMMS::CAMMSEMCAudioVirtualizerControl::DeallocateControl err = %d",err);
+        }
+        //return the control to factory
+        MEffectControl* temp = iMStereoWideningControl;
+        iStreamControl->RemoveEffect(*temp);
+        // Delete the Effect
+        MEffectControl* tempCtrl = iMStereoWideningControl;
+        iFactory->DeleteEffectControl(tempCtrl);
+        iMStereoWideningControl = NULL;
+    }
+}
+
+const TDesC& CAMMSEMCAudioVirtualizerControl::ClassName() const
+{
+    return KAMMSEMCAudioVirtualizerControl;
+}
+
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::SetEnforcedL
+// Enforces the effect to be in use.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCAudioVirtualizerControl::SetEnforcedL(TBool aEnforced)
+{
+    LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl:SetEnforcedL");
+    // Indicate the effect is to be enforced or not. ETrue = Enforced.
+
+    iMStereoWideningControl->Enforce(aEnforced);
+
+    ApplySettingsL();
+
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::Enforced
+// Returns the current enforced setting of the effect.
+// -----------------------------------------------------------------------------
+//
+TBool CAMMSEMCAudioVirtualizerControl::Enforced()
+{
+    // Returns ETrue if the effect is enforced, EFalse if not enforced.
+    TBool enforced;
+    iMStereoWideningControl->IsEnforced(enforced);
+    return enforced;
+
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::SetScopeL
+// Sets the scope of the effect.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCAudioVirtualizerControl::SetScopeL(TInt aScope)
+{
+    LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl:SetScopeL");
+    __ASSERT_DEBUG(
+        (aScope == CAMMSEffectControlGroup::EScopeLiveOnly),
+        User::Invariant());
+    // Just to suppress warning in release build
+    (void)aScope;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::Scope
+// Returns the scope in which the effect is present.
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSEMCAudioVirtualizerControl::Scope()
+{
+    // For now only the (LIVE_ONLY) scope is supported.
+    return CAMMSEffectControlGroup::EScopeLiveOnly;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::ApplySettingsL
+// Apply changed settings if Effect is in enabled state.
+// -----------------------------------------------------------------------------
+void CAMMSEMCAudioVirtualizerControl::ApplySettingsL()
+{
+    LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl:ApplySettingsL called, checking state");
+    TBool enabled;
+    iMStereoWideningControl->IsEnabled(enabled);
+    if (enabled)
+    {
+        LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCAudioVirtualizerControl:ApplySettingsL calling ApplyL");
+        iMStereoWideningControl->Apply();
+    }
+}
+
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+void CAMMSEMCAudioVirtualizerControl::ConstructL()
+{
+    // Create array for preset names
+    iPresetNames = new(ELeave) CDesCArrayFlat(1);
+
+    // Set current preset to a negative value as it is not set yet
+    iCurrentPreset = -1;
+
+    CAMMSEffectControl::ConstructL();
+    iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility =
+        new(ELeave)CAMMSEMCAudioVirtualizerEnvironmentalPresetUtility;
+    iAMMSEMCAudioVirtualizerEnvironmentalPresetUtility->ConstructL();
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCAudioVirtualizerControl::CAMMSEMCAudioVirtualizerControl
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+CAMMSEMCAudioVirtualizerControl::CAMMSEMCAudioVirtualizerControl(
+    CMMAPlayer* aPlayer)
+        : CAMMSEffectControl(aPlayer)
+{
+    iMMAPlayer = aPlayer;
+}
+
+//  End of File