/*
* 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: This class is used to create tuner player and control
*
*/
// INCLUDE FILES
#include "AMMSTunerFactory.h"
#include "CAMMSTunerPlayer.h"
#include "CAMMSTunerControl.h"
//#include "CAMMSTunerVolumeControl.h"
#include <CMMAPlayerProperties.h>
#include <e32std.h>
#include <e32math.h>
#include <jdebug.h>
// CONSTANTS
_LIT(KFreqParam, "f");
_LIT(KModulationParam, "mod");
_LIT(KStereoModeParam, "st");
MMA_PARAMETER_STR(KStereoModeParamMono, "mono");
MMA_PARAMETER_STR(KStereoModeParamStereo, "stereo");
MMA_PARAMETER_STR(KStereoModeParamAuto, "auto");
MMA_PARAMETER_ARRAY(KValidStereoModeValues)
{
{
&KStereoModeParamMono
}, {&KStereoModeParamStereo}, {&KStereoModeParamAuto}
};
_LIT(KProgramIdParam, "id");
_LIT(KPresetParam, "preset");
_LIT(KModulationFm, "fm");
_LIT(KStereoModeMono, "mono");
_LIT(KStereoModeStereo, "stereo");
_LIT(KStereoModeAuto, "auto");
const TInt KMegaHertzChar = 'M';
const TInt KKiloHertzChar = 'k';
const TInt KFreqDotChar = '.';
const TInt KMegaHzMultiplier = 1000000;
const TInt KKiloHzMultiplier = 1000;
const TInt KStereoModeMonoInt = 1;
const TInt KStereoModeStereoInt = 2;
const TInt KStereoModeAutoInt = 3;
// ============================ MEMBER FUNCTIONS ===============================
// Destructor
AMMSTunerFactory::~AMMSTunerFactory()
{
}
// -----------------------------------------------------------------------------
// AMMSTunerFactory::CreatePlayerL
// ?implementation_description
// (other items were commented in a header).
// -----------------------------------------------------------------------------
//
void AMMSTunerFactory::CreatePlayerL(CAMMSTunerPlayer** aTunerPlayer,
const TDesC* aLocatorParams)
{
DEBUG("AMMSTunerFactory::CreatePlayerL +");
TInt frequency = 0;
TInt stereoMode = 0;
TInt preset = 0;
if (aLocatorParams->Length() != 0)
{
DEBUG("AMMSTunerFactory::CreatePlayerL 1");
ParseParamsL(aLocatorParams, frequency, stereoMode, preset);
}
//create tunercontrol
CAMMSTunerControl* tunerControl = CAMMSTunerControl::NewL();
CleanupStack::PushL(tunerControl);
//set values to tunercontrol
if (frequency > 0)
{
tunerControl->SetFrequencyL(frequency);
}
if (frequency == 0)
{
//by default frequency is fm modulation's min freq
tunerControl->SetFrequencyL(tunerControl->MinFreqL());
}
if (stereoMode > 0)
{
tunerControl->SetStereoModeL(stereoMode);
}
if (preset > 0)
{
tunerControl->UsePresetL(preset);
}
//create tunerplayer
*aTunerPlayer = CAMMSTunerPlayer::NewL(tunerControl);
//create tunervolumeconrol
//CAMMSTunerVolumeControl* tunerVolumeControl = CAMMSTunerVolumeControl::NewL( *aTunerPlayer );
//add controls to player
(*aTunerPlayer)->AddControlL(tunerControl);
//(*aTunerPlayer)->AddControlL( tunerVolumeControl );
CleanupStack::Pop(tunerControl);
DEBUG("AMMSTunerFactory::CreatePlayerL -");
}
// -----------------------------------------------------------------------------
// AMMSTunerFactory::ParseParamsL
// ?implementation_description
// (other items were commented in a header).
// -----------------------------------------------------------------------------
//
void AMMSTunerFactory::ParseParamsL(const TDesC* aLocatorParams,
TInt& aFrequency,
TInt& aStereoMode,
TInt& aPreset)
{
DEBUG("AMMSTunerFactory::ParseParamsL +");
CMMAParameterRuleSet* rules = CMMAParameterRuleSet::NewLC();
//freq rule
TMMAParameterRuleDes freqRule(KFreqParam);
rules->AppendRuleL(&freqRule);
//modulation rule
TMMAParameterRuleDes modulationRule(KModulationParam);
rules->AppendRuleL(&modulationRule);
//stereo mode rule
TMMAParameterRuleDes stereoModeRule(KStereoModeParam, KValidStereoModeValues,
MMA_PARAMETER_ARRAY_SIZE(KValidStereoModeValues));
rules->AppendRuleL(&stereoModeRule);
//preset rule KMinTInt-KMaxTInt
TMMAParameterRuleInt presetRule(KPresetParam);
rules->AppendRuleL(&presetRule);
//id rule
TMMAParameterRuleDes idRule(KProgramIdParam);
rules->AppendRuleL(&idRule);
CMMAPlayerProperties* properties = CMMAPlayerProperties::NewL(*aLocatorParams, *rules);
CleanupStack::PushL(properties);
// validating properties
properties->ValidateL();
//get freq
TPtrC freq(NULL, 0);
properties->GetProperty(KFreqParam, freq);
//parse frequency
if (freq.Length() != 0)
{
aFrequency = ParseFreqL(freq);
}
//get modulation
TPtrC modulation(NULL, 0);
properties->GetProperty(KModulationParam, modulation);
if (modulation.Length() != 0)
{
// only fm modulation is supported
if (modulation.Compare(KModulationFm) != 0)
{
User::Leave(KErrNotSupported);
}
}
//get stereo mode
TPtrC stereoMode(NULL, 0);
properties->GetProperty(KStereoModeParam, stereoMode);
if (stereoMode.Compare(KStereoModeMono) == 0)
{
aStereoMode = KStereoModeMonoInt;
}
else if (stereoMode.Compare(KStereoModeStereo) == 0)
{
aStereoMode = KStereoModeStereoInt;
}
else if (stereoMode.Compare(KStereoModeAuto) == 0)
{
aStereoMode = KStereoModeAutoInt;
}
//get preset
properties->GetProperty(KPresetParam, aPreset);
//get id
TPtrC id(NULL, 0);
properties->GetProperty(KProgramIdParam, id);
if (id.Length() != 0)
{
// id is not supported
User::Leave(KErrNotSupported);
}
CleanupStack::PopAndDestroy(properties);
CleanupStack::PopAndDestroy(rules);
DEBUG("AMMSTunerFactory::ParseParamsL -");
}
// -----------------------------------------------------------------------------
// AMMSTunerFactory::ParseFreqL
// ?implementation_description
// (other items were commented in a header).
// -----------------------------------------------------------------------------
//
TInt AMMSTunerFactory::ParseFreqL(const TPtrC aFrequency)
{
DEBUG("AMMSTunerFactory::ParseFreqL +");
TReal freqReal = 0;
//is value MHz or kHz or just hertz
TInt freqPrefixMPos = aFrequency.Locate(KMegaHertzChar);
TInt freqPrefixKPos = aFrequency.Locate(KKiloHertzChar);
if (freqPrefixMPos != KErrNotFound)
{
//there is a M
TPtrC hertz = aFrequency.Left(freqPrefixMPos);
//TPtrC -> TReal
TReal value = TDesCToTRealL(hertz);
freqReal = value * KMegaHzMultiplier;
}
else if (freqPrefixKPos != KErrNotFound)
{
//there is a k
TPtrC hertz = aFrequency.Left(freqPrefixKPos);
//TPtrC -> TReal
TReal value = TDesCToTRealL(hertz);
freqReal = value * KKiloHzMultiplier;
}
else
{
//parameter value is simply hertz, there is no M or k
//TPtrC -> TReal
freqReal = TDesCToTRealL(aFrequency);
}
TInt32 freqInt = 0;
//TReal -> TInt
TInt err = Math::Int(freqInt, freqReal);
if (err != KErrNone)
{
User::Leave(KErrArgument);
}
return freqInt;
}
// -----------------------------------------------------------------------------
// AMMSTunerFactory::TDesCToTRealL
// ?implementation_description
// (other items were commented in a header).
// -----------------------------------------------------------------------------
//
TReal AMMSTunerFactory::TDesCToTRealL(const TPtrC aHertz)
{
DEBUG("AMMSTunerFactory::TDesCToTRealL +");
TReal valueReal = 0;
TLex lex(aHertz);
if ((lex.Val(valueReal, KFreqDotChar) != KErrNone) ||
!lex.Eos())
{
User::Leave(KErrArgument);
}
return valueReal;
}
// End of File