--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/amms_qt/mmacontrol/src.emc/cammsemcequalizercontrol.cpp Fri May 14 15:47:24 2010 +0300
@@ -0,0 +1,456 @@
+/*
+* 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 equalization settings of a Player.
+*
+*/
+
+
+// INCLUDE FILES
+#include <logger.h>
+#include "cammsemcequalizercontrol.h"
+
+
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::NewLC
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+CAMMSEMCEqualizerControl* CAMMSEMCEqualizerControl::NewLC(CMMAPlayer* aPlayer)
+{
+ CAMMSEMCEqualizerControl* self =
+ new(ELeave) CAMMSEMCEqualizerControl(aPlayer);
+
+ CleanupStack::PushL(self);
+ self->ConstructL();
+
+ return self;
+}
+
+// Destructor
+CAMMSEMCEqualizerControl::~CAMMSEMCEqualizerControl()
+{
+ LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl::~CAMMSEMCEqualizerControl");
+
+ // Perform DeallocateControl, if the state change has not yet performed it.
+ DeallocateControl();
+ if (iAMMSEMCEqualizerEnvironmentalPresetUtility)
+ delete iAMMSEMCEqualizerEnvironmentalPresetUtility;
+ delete iPresetNames;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::BandLevelL
+// Gets the gain set for the given equalizer band.
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSEMCEqualizerControl::BandLevelL(TInt aBand)
+{
+ // if aBand is out of range the method must leave with KErrArgument.
+
+ if (aBand < 0 || aBand > (NumberOfBands() - 1))
+ {
+ User::Leave(KErrArgument);
+ }
+ // Returns the band level in mB for the specified band
+ TInt bandlevel;
+ TInt aNativeBand = aBand + KAMMSBandOffset;
+ iMEqualizerControl->BandLevel(aNativeBand,bandlevel);
+ return bandlevel;
+
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::MaxBandLevel
+// Returns the maximum band level supported.
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSEMCEqualizerControl::MaxBandLevel()
+{
+ // Get the dB range in mB for the equalizer.
+ TInt min,max;
+ iMEqualizerControl->DbLevelLimits(min,max);
+ return max;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::MinBandLevel
+// Returns the minimum band level supported.
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSEMCEqualizerControl::MinBandLevel()
+{
+ // Get the dB range in mB for the equalizer.
+ TInt min,max;
+ iMEqualizerControl->DbLevelLimits(min,max);
+ return min;
+}
+
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::BandWidth
+// Returns the band width in Hz for the specified band.
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSEMCEqualizerControl::BandWidth(TInt aBand)
+{
+ TInt bndwdth;
+ TInt aNativeBand = aBand + KAMMSBandOffset;
+ iMEqualizerControl->BandWidth(aNativeBand,bndwdth);
+ return bndwdth;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::CenterFrequency
+// Returns the center frequency in Hz for a given band.
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSEMCEqualizerControl::CenterFrequency(TInt aBand)
+{
+ TInt cntrfreq;
+ TInt aNativeBand = aBand + KAMMSBandOffset;
+ iMEqualizerControl->CenterFrequency(aNativeBand,cntrfreq);
+ return cntrfreq;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::CrossoverFrequency
+// Returns the cross-over frequency between the given frequency.
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSEMCEqualizerControl::CrossoverFrequency(TInt aBand)
+{
+ TInt aCrossOverFreq;
+ TInt aNativeBand = aBand + KAMMSBandOffset;
+ iMEqualizerControl->CrossoverFrequency(aNativeBand, aCrossOverFreq);
+ return aCrossOverFreq;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::NumberOfBands
+// Gets the number of frequency bands that the equalizer supports.
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSEMCEqualizerControl::NumberOfBands()
+{
+ // Returns the number of equalizer bands.
+ // AudioEqualizerBase: TUint8 NumberOfBands() const;
+
+ TInt aNumOfBands;
+ iMEqualizerControl->NumberOfBands(aNumOfBands);
+ return aNumOfBands;
+
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::SetBandLevelL
+// Sets the given equalizer band to the given gain value.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCEqualizerControl::SetBandLevelL(
+ TInt aLevel,
+ TInt aBand)
+{
+ LOG2( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl::SetBandLevelL: level=%d, band=%d",
+ aLevel, aBand);
+ // If aBand or aLevel is out of valid range the method must leave
+ // with KErrArgument.
+ if (aBand < 0 ||
+ aBand > (NumberOfBands() - 1) ||
+ aLevel < MinBandLevel() ||
+ aLevel > MaxBandLevel())
+ {
+ User::Leave(KErrArgument);
+ }
+ TInt aNativeBand = aBand + KAMMSBandOffset;
+ // Sets the equalizer band level value in mB, ranging from Min to Max
+ iMEqualizerControl->SetBandLevel(aNativeBand, aLevel);
+
+ ApplySettingsL();
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::SetPresetL
+// Sets the effect according to the given preset.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCEqualizerControl::SetPresetL(const TDesC& aPreset)
+{
+ LOG1( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl::SetPresetL \"%S\"", aPreset.Ptr());
+ CAudioEqualizer *iAudioEqualizer = NULL;
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->PrepareEmptyEqualizerUtilitiesL();
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->GetPresetNamesL(*iPresetNames);
+ TInt presetPosition = 0;
+ TInt findPreset = iPresetNames->Find(aPreset, presetPosition);
+ if (findPreset == 0) // Find returns zero, if a matching element is found.
+ {
+ iAudioEqualizer = iAMMSEMCEqualizerEnvironmentalPresetUtility->GetEqualizerAtPresetIndexL(presetPosition);
+ iCurrentPreset = presetPosition;
+ }
+ else
+ {
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->DeleteEmptyEqualizerUtilities();
+ User::Leave(KErrArgument);
+ }
+
+ if (!iAudioEqualizer)
+ {
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->DeleteEmptyEqualizerUtilities();
+ return;
+ }
+ //Get all preset data here
+ // For each band of AudioEqualizer get the band level and set it to iMEqualizerControl
+
+ TInt noOfbands = iAudioEqualizer->NumberOfBands();
+
+ for (TInt i = 0; i < noOfbands; i++)
+ {
+ // Band 0 in JSR-234 equals Band 1 in Effect API
+ TInt aNativeBand = i + KAMMSBandOffset;
+ TInt iBandLevel = iAudioEqualizer->BandLevel(aNativeBand);
+ iMEqualizerControl->SetBandLevel(aNativeBand, iBandLevel);
+ }
+
+ iMEqualizerControl->Apply();
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->DeleteEmptyEqualizerUtilities();
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::PresetNamesL
+// Gets the available preset names.
+// -----------------------------------------------------------------------------
+//
+const CDesCArray& CAMMSEMCEqualizerControl::PresetNamesL()
+{
+ // Returns an array of all preset names (pre-defined and user-defined).
+ // The pre-defined presets are in the beginning of the list.
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->PrepareEmptyEqualizerUtilitiesL();
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->GetPresetNamesL(*iPresetNames);
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->DeleteEmptyEqualizerUtilities();
+ return *iPresetNames;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::PresetL
+// Gets the current preset.
+// -----------------------------------------------------------------------------
+//
+const TDesC& CAMMSEMCEqualizerControl::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
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->PrepareEmptyEqualizerUtilitiesL(); // codescanner::leave
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->GetPresetAtIndexL(iPresetName , iCurrentPreset); // codescanner::leave
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->DeleteEmptyEqualizerUtilities();
+ return iPresetName;
+ }
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::SetEnabledL
+// Enables/disables the effect.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCEqualizerControl::SetEnabledL(TBool aEnable)
+{
+ if (aEnable)
+ {
+ // Enable the effect.
+
+ iMEqualizerControl->Enable();
+ LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl::SetEnabledL(true), calling Apply");
+ iMEqualizerControl->Apply();
+ }
+ else
+ {
+ // Disable the effect
+
+ LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl::SetEnabledL(false), calling Disable");
+ iMEqualizerControl->Disable();
+ iMEqualizerControl->Apply();
+ }
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::PrepareControlL
+// Function which is called after the correct state is set in Player.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCEqualizerControl::PrepareControlL()
+{
+ // Perform the action only for the first time, skip if called afterwards
+ if (!iMEqualizerControl)
+ {
+ LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl::PrepareControlL");
+ //Create Equalizer Effect Control
+ iStreamControl = (static_cast<CMMAEMCAudioPlayer*>(iMMAPlayer))->StreamControl();
+ iFactory = (static_cast<CMMAEMCAudioPlayer*>(iMMAPlayer))->MMFactory();
+
+ MEffectControl* temp(NULL);
+ User::LeaveIfError(iFactory->CreateEffectControl(KEqualizerEffectControl, temp));
+ iMEqualizerControl = static_cast<MEqualizerControl*>(temp);
+ User::LeaveIfError(iStreamControl->AddEffect(*iMEqualizerControl));
+ iMEqualizerControl->Enable();
+ }
+
+
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::DeallocateControl
+// Function which is called after the correct state is set in Player.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCEqualizerControl::DeallocateControl()
+{
+ if (iMEqualizerControl)
+ {
+ LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl::DeallocateControl");
+
+ // Equalizer for Audio can be disabled or enabled
+ TRAPD(err,iMEqualizerControl->Disable());
+ if (err != KErrNone)
+ {
+ //Some EMC Error
+ ELOG1( EJavaAMMS, "AMMS::CAMMSEMCEqualizerControl::DeallocateControl err = %d",err);
+ }
+ //return the control to factory
+ MEffectControl* temp = iMEqualizerControl;
+ iStreamControl->RemoveEffect(*temp);
+ // Delete the Effect
+ MEffectControl* tempCtrl = iMEqualizerControl;
+ iFactory->DeleteEffectControl(tempCtrl);
+ iMEqualizerControl = NULL;
+ }
+}
+
+
+const TDesC& CAMMSEMCEqualizerControl::ClassName() const
+{
+ return KAMMSEMCEqualizerControl;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::SetEnforcedL
+// Enforces the effect to be in use.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCEqualizerControl::SetEnforcedL(TBool aEnforced)
+{
+ LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl:SetEnforcedL");
+ // Indicate the effect is to be enforced or not. ETrue = Enforced.
+
+ iMEqualizerControl->Enforce(aEnforced);
+
+ ApplySettingsL();
+
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::Enforced
+// Returns the current enforced setting of the effect.
+// -----------------------------------------------------------------------------
+//
+TBool CAMMSEMCEqualizerControl::Enforced()
+{
+ // Returns ETrue if the effect is enforced, EFalse if not enforced.
+ TBool enforced;
+ iMEqualizerControl->IsEnforced(enforced);
+ return enforced;
+
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::SetScopeL
+// Sets the scope of the effect.
+// -----------------------------------------------------------------------------
+//
+void CAMMSEMCEqualizerControl::SetScopeL(TInt aScope)
+{
+ LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl:SetScopeL");
+ __ASSERT_DEBUG(
+ (aScope == CAMMSEffectControlGroup::EScopeLiveOnly),
+ User::Invariant());
+ // Just to suppress warning in release build
+ (void)aScope;
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::Scope
+// Returns the scope in which the effect is present.
+// -----------------------------------------------------------------------------
+//
+TInt CAMMSEMCEqualizerControl::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 CAMMSEMCEqualizerControl::ApplySettingsL()
+{
+ LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl:ApplySettingsL called, checking state");
+ TBool enabled;
+ iMEqualizerControl->IsEnabled(enabled);
+ if (enabled)
+ {
+ LOG( EJavaAMMS, EInfo, "AMMS::CAMMSEMCEqualizerControl:ApplySettingsL calling ApplyL");
+ iMEqualizerControl->Apply();
+ }
+}
+
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+void CAMMSEMCEqualizerControl::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();
+ iAMMSEMCEqualizerEnvironmentalPresetUtility = new(ELeave)CAMMSEMCEqualizerEnvironmentalPresetUtility;
+ iAMMSEMCEqualizerEnvironmentalPresetUtility->ConstructL();
+}
+
+// -----------------------------------------------------------------------------
+// CAMMSEMCEqualizerControl::CAMMSEMCEqualizerControl
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+CAMMSEMCEqualizerControl::CAMMSEMCEqualizerControl(CMMAPlayer* aPlayer)
+ : CAMMSBaseEqualizerControl(aPlayer)
+{
+ iMMAPlayer = aPlayer;
+}
+
+// End of File
+
+
+