--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/amms_qt/mmacontrol/src.emc/cammspancontrol.cpp	Tue May 11 16:07:20 2010 +0300
@@ -0,0 +1,214 @@
+/*
+* 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:  Manipulates the panning of a Player in the stereo output mix.
+*
+*/
+
+
+
+// INCLUDE FILES
+#include <logger.h>
+#include <cmmaaudioplayer.h>
+#include <cmmamidiplayer.h>
+#include <cmmaemcaudioplayer.h>
+#include "cammspancontrol.h"
+
+#ifdef _DEBUG
+// CONSTANTS
+const TInt KAMMSMaxPanning = 100;
+const TInt KAMMSMinPanning = -100;
+#endif // _DEBUG
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CAMMSPanControl::NewLC
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+CAMMSPanControl* CAMMSPanControl::NewLC(CMMAPlayer* aPlayer)
+{
+    CAMMSPanControl* self = new(ELeave) CAMMSPanControl(aPlayer);
+
+    CleanupStack::PushL(self);
+
+    self->ConstructL();
+
+    return self;
+}
+
+// Destructor
+CAMMSPanControl::~CAMMSPanControl()
+{
+    if (iRMMFAudioPlayDeviceCustomCommands)
+    {
+        delete iRMMFAudioPlayDeviceCustomCommands;
+        iRMMFAudioPlayDeviceCustomCommands = NULL;
+    }
+
+    // Remove the EMC Pan Control Effect from Stream Control
+    // Deleted the effect
+    if (iMBalanceControl)
+    {
+        //return the control to factory
+        MEffectControl* temp = iMBalanceControl;
+        if (iStreamControl)
+            iStreamControl->RemoveEffect(*temp);
+        // Delete the Effect
+        MEffectControl* tempCtrl = iMBalanceControl;
+        if (iFactory)
+            iFactory->DeleteEffectControl(tempCtrl);
+        iMBalanceControl = NULL;
+    }
+
+
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSPanControl::PanL
+// Gets the current panning set.
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSPanControl::PanL()
+{
+    TInt balance = KMMFBalanceCenter;
+
+    // In case of MIDIPlayer, use CMidiClientUtility, otherwise RMMFController.
+    if (iMidiClientUtility)
+    {
+        // Get the current stereo balance value.
+
+        balance = iMidiClientUtility->GetBalanceL();
+    }
+    else if (iRMMFAudioPlayDeviceCustomCommands)
+    {
+        // Gets the balance between the left and right stereo audio channels.
+
+        User::LeaveIfError(
+            iRMMFAudioPlayDeviceCustomCommands->GetBalance(balance));
+    }
+    else       // if EMC Pan Control
+    {
+        // Get the balance and set it to balance var.
+        LOG( EJavaAMMS, EInfo, "AMMS::CAMMSPanControl::PanL is called for EMC implemented palyer");
+        User::LeaveIfError(iMBalanceControl->GetBalance(balance));
+    }
+    LOG1( EJavaAMMS, EInfo, "AMMS::CAMMSPanControl::PanL called, native GetBalance = %d",
+              balance);
+
+    return balance;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSPanControl::SetPanL
+// Sets the panning using a linear point scale (-100 - +100).
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSPanControl::SetPanL(TInt aPan)
+{
+    LOG1( EJavaAMMS, EInfo, "AMMS::CAMMSPanControl::SetPanL: Pan = %d", aPan);
+
+    // Check in debug build that aPan is within valid range.
+    __ASSERT_DEBUG(
+        (aPan <= KAMMSMaxPanning) &&
+        (aPan >= KAMMSMinPanning),
+        User::Invariant());
+
+    // In case of MIDIPlayer, use CMidiClientUtility, otherwise RMMFController.
+    if (iMidiClientUtility)
+    {
+        // Set the current stereo balance value.
+        // Defaults to KMMFBalanceCenter to restore equal left-right balance.
+
+        iMidiClientUtility->SetBalanceL(aPan);
+    }
+    else if (iRMMFAudioPlayDeviceCustomCommands)
+    {
+        // Sets the balance between the left and right stereo audio channels
+        // Use a value between KMMFBalanceMaxLeft and KMMFBalanceMaxRight.
+        // Centre balance can be restored by using KMMFBalanceCenter.
+
+        User::LeaveIfError(
+            iRMMFAudioPlayDeviceCustomCommands->SetBalance(aPan));
+    }
+    else     // EMC Pan Control
+    {
+        // Set the Balance using the Pan Control
+        LOG( EJavaAMMS, EInfo, "AMMS::CAMMSPanControl::SetPanL: SetBalance()-- EMC ");
+        User::LeaveIfError(iMBalanceControl->SetBalance(aPan));
+        User::LeaveIfError(iMBalanceControl->Apply());
+    }
+
+    return PanL();
+}
+
+
+const TDesC& CAMMSPanControl::ClassName() const
+{
+    return KAMMSPanControl;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSPanControl::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+void CAMMSPanControl::ConstructL()
+{
+    LOG( EJavaAMMS, EInfo, "AMMS::CAMMSPanControl::ConstructL");
+
+    if (iPlayer->Type() == KMMAMIDIPlayer)
+    {
+        // In case of CMMAMIDIPlayer use CMidiClientUtility
+        CMMAMIDIPlayer* mmaMIDIPlayer =
+            reinterpret_cast< CMMAMIDIPlayer* >(iPlayer);
+
+        iMidiClientUtility = mmaMIDIPlayer->MidiClient();
+    }
+    else if (iPlayer->Type() == KMMAEMCAudioPlayer)
+    {
+        //Get MMFactory and StreamControl from the player
+        //Create Pan Control using EMC API.
+        //Add the control to Stream Control
+        //Create Balance Control
+        iStreamControl = (static_cast<CMMAEMCAudioPlayer*>(iMMAPlayer))->StreamControl();
+        iFactory = (static_cast<CMMAEMCAudioPlayer*>(iMMAPlayer))->MMFactory();
+
+        MEffectControl* temp(NULL);
+        User::LeaveIfError(iFactory->CreateEffectControl(KBalanceEffectControl, temp));
+        iMBalanceControl  = static_cast<MBalanceControl*>(temp);
+        User::LeaveIfError(iStreamControl->AddEffect(*iMBalanceControl));
+        LOG( EJavaAMMS, EInfo, "AMMS::CAMMSPanControl::ConstructL is called for EMC implemented Player");
+    }
+    else
+    {
+        CMMAAudioPlayer* mmaAudioPlayer =
+            reinterpret_cast< CMMAAudioPlayer* >(iPlayer);
+
+        RMMFController& mmfController = mmaAudioPlayer->Controller();
+
+        iRMMFAudioPlayDeviceCustomCommands =
+            new(ELeave) RMMFAudioPlayDeviceCustomCommands(mmfController);
+    }
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSPanControl::CAMMSPanControl
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+CAMMSPanControl::CAMMSPanControl(CMMAPlayer* aPlayer)
+        : CAMMSControl(aPlayer)
+{
+    iMMAPlayer = aPlayer;
+}
+//  End of File