An Effect to bring the loudness level up to a chosen level. More...

#include <Loudness.h>

Inheritance diagram for EffectLoudness:

Collaboration diagram for EffectLoudness:

Public Types
enum	kNormalizeTargets { kLoudness , kRMS , nAlgos }

Public Types inherited from StatefulEffectBase
using	MessagePackage = EffectInstance::MessagePackage

Public Types inherited from EffectPlugin
using	EffectSettingsAccessPtr = std::shared_ptr< EffectSettingsAccess >

using	InstancePointer = std::shared_ptr< EffectInstanceEx >

using	InstanceFinder = std::function< std::optional< InstancePointer >(EffectSettings &settings) >

Public Types inherited from EffectDefinitionInterface
enum class	RealtimeSince : unsigned { Never , After_3_1 , Always }
	In which versions of Audacity was an effect realtime capable? More...

Public Types inherited from EffectUIServices
enum	: long { DefaultMessageBoxStyle = wxOK \| wxCENTRE }

Public Member Functions
	EffectLoudness ()

virtual	~EffectLoudness ()

ComponentInterfaceSymbol	GetSymbol () const override

TranslatableString	GetDescription () const override

ManualPageID	ManualPage () const override
	Name of a page in the Audacity alpha manual, default is empty. More...

EffectType	GetType () const override
	Type determines how it behaves. More...

bool	Process (EffectInstance &instance, EffectSettings &settings) override

std::unique_ptr< EffectEditor >	PopulateOrExchange (ShuttleGui &S, EffectInstance &instance, EffectSettingsAccess &access, const EffectOutputs *pOutputs) override
	Add controls to effect panel; always succeeds. More...

bool	TransferDataToWindow (const EffectSettings &settings) override

bool	TransferDataFromWindow (EffectSettings &settings) override

Public Member Functions inherited from StatefulEffect
	~StatefulEffect () override

std::shared_ptr< EffectInstance >	MakeInstance () const override
	Make an object maintaining short-term state of an Effect. More...

Public Member Functions inherited from StatefulEffectBase
virtual bool	Init ()

virtual bool	Process (EffectInstance &instance, EffectSettings &settings)=0

virtual bool	RealtimeInitialize (EffectSettings &settings, double sampleRate)

virtual bool	RealtimeAddProcessor (EffectSettings &settings, EffectOutputs *pOutputs, unsigned numChannels, float sampleRate)

virtual bool	RealtimeSuspend ()

virtual bool	RealtimeResume ()

virtual bool	RealtimeProcessStart (MessagePackage &package)
	settings are possibly changed, since last call, by an asynchronous dialog More...

virtual size_t	RealtimeProcess (size_t group, EffectSettings &settings, const float const inBuf, float const outBuf, size_t numSamples)

virtual bool	RealtimeProcessEnd (EffectSettings &settings) noexcept
	settings can be updated to let a dialog change appearance at idle More...

virtual bool	RealtimeFinalize (EffectSettings &settings) noexcept

virtual size_t	SetBlockSize (size_t maxBlockSize)

virtual size_t	GetBlockSize () const

virtual unsigned	GetAudioInCount () const
	How many input buffers to allocate at once. More...

virtual unsigned	GetAudioOutCount () const
	How many output buffers to allocate at once. More...

virtual sampleCount	GetLatency () const

virtual bool	NeedsDither () const

virtual bool	ProcessInitialize (EffectSettings &settings, double sampleRate, ChannelNames chanMap=nullptr)

virtual bool	ProcessFinalize () noexcept

Public Member Functions inherited from Effect
	Effect ()

virtual	~Effect ()

PluginPath	GetPath () const override

bool	VisitSettings (SettingsVisitor &visitor, EffectSettings &settings) override

bool	VisitSettings (ConstSettingsVisitor &visitor, const EffectSettings &settings) const override

ComponentInterfaceSymbol	GetSymbol () const override

VendorSymbol	GetVendor () const override

wxString	GetVersion () const override

TranslatableString	GetDescription () const override

EffectType	GetType () const override
	Type determines how it behaves. More...

EffectFamilySymbol	GetFamily () const override
	Report identifier and user-visible name of the effect protocol. More...

bool	IsInteractive () const override
	Whether the effect needs a dialog for entry of settings. More...

bool	IsDefault () const override
	Whether the effect sorts "above the line" in the menus. More...

RealtimeSince	RealtimeSupport () const override
	Since which version of Audacity has the effect supported realtime? More...

bool	SupportsAutomation () const override
	Whether the effect has any automatable controls. More...

bool	SaveSettings (const EffectSettings &settings, CommandParameters &parms) const override
	Store settings as keys and values. More...

bool	LoadSettings (const CommandParameters &parms, EffectSettings &settings) const override
	Restore settings from keys and values. More...

OptionalMessage	LoadUserPreset (const RegistryPath &name, EffectSettings &settings) const override

bool	SaveUserPreset (const RegistryPath &name, const EffectSettings &settings) const override
	Save settings in the configuration file as a user-named preset. More...

RegistryPaths	GetFactoryPresets () const override
	Report names of factory presets. More...

OptionalMessage	LoadFactoryPreset (int id, EffectSettings &settings) const override

OptionalMessage	LoadFactoryDefaults (EffectSettings &settings) const override

virtual const EffectParameterMethods &	Parameters () const

bool	CanExportPresets () const override
	Whether the effect supports export of presets to files, and importing too. More...

bool	HasOptions () const override

const EffectSettingsManager &	GetDefinition () const override

virtual NumericFormatSymbol	GetSelectionFormat ()

bool	SaveSettingsAsString (const EffectSettings &settings, wxString &parms) const override

OptionalMessage	LoadSettingsFromString (const wxString &parms, EffectSettings &settings) const override

bool	IsBatchProcessing () const override

void	SetBatchProcessing () override

void	UnsetBatchProcessing () override

unsigned	TestUIFlags (unsigned mask)

bool	Delegate (Effect &delegate, EffectSettings &settings, InstanceFinder finder={})
	Re-invoke DoEffect on another Effect object that implements the work. More...

Public Member Functions inherited from EffectBase
	EffectBase ()

	~EffectBase () override

bool	IsLinearEffect () const

bool	PreviewsFullSelection () const

void	SetTracks (TrackList *pTracks)

virtual std::any	BeginPreview (const EffectSettings &settings)
	Called when Preview() starts, to allow temporary effect state changes. More...

bool	DoEffect (EffectSettings &settings, const InstanceFinder &finder, double projectRate, TrackList list, WaveTrackFactory factory, NotifyingSelectedRegion &selectedRegion, unsigned flags, const EffectSettingsAccessPtr &pAccess) override

virtual double	CalcPreviewInputLength (const EffectSettings &settings, double previewLength) const =0

void	CountWaveTracks ()

Public Member Functions inherited from EffectPlugin
EffectPlugin &	operator= (EffectPlugin &)=delete

virtual	~EffectPlugin ()

virtual bool	HasOptions () const =0

virtual bool	CanExportPresets () const =0
	Whether the effect supports export of presets to files, and importing too. More...

virtual const EffectSettingsManager &	GetDefinition () const =0

virtual bool	SaveSettingsAsString (const EffectSettings &settings, wxString &parms) const =0

virtual OptionalMessage	LoadSettingsFromString (const wxString &parms, EffectSettings &settings) const =0

virtual bool	IsBatchProcessing () const =0

virtual void	SetBatchProcessing ()=0

virtual void	UnsetBatchProcessing ()=0

virtual bool	DoEffect (EffectSettings &settings, const InstanceFinder &finder, double projectRate, TrackList list, WaveTrackFactory factory, NotifyingSelectedRegion &selectedRegion, unsigned flags, const EffectSettingsAccessPtr &pAccess=nullptr)=0

Public Member Functions inherited from EffectInstanceFactory
virtual	~EffectInstanceFactory ()

virtual std::shared_ptr< EffectInstance >	MakeInstance () const =0
	Make an object maintaining short-term state of an Effect. More...

Public Member Functions inherited from EffectSettingsManager
virtual	~EffectSettingsManager ()

virtual bool	VisitSettings (SettingsVisitor &visitor, EffectSettings &settings)

virtual bool	VisitSettings (ConstSettingsVisitor &visitor, const EffectSettings &settings) const

virtual EffectSettings	MakeSettings () const

virtual bool	CopySettingsContents (const EffectSettings &src, EffectSettings &dst) const
	Update one settings object from another. More...

virtual std::unique_ptr< EffectOutputs >	MakeOutputs () const
	Produce an object to hold values to send to effect output meters. More...

Public Member Functions inherited from EffectDefinitionInterface
virtual	~EffectDefinitionInterface ()

virtual EffectType	GetType () const =0
	Type determines how it behaves. More...

virtual EffectType	GetClassification () const
	Determines which menu it appears in; default same as GetType(). More...

virtual EffectFamilySymbol	GetFamily () const =0
	Report identifier and user-visible name of the effect protocol. More...

virtual bool	IsInteractive () const =0
	Whether the effect needs a dialog for entry of settings. More...

virtual bool	IsDefault () const =0
	Whether the effect sorts "above the line" in the menus. More...

virtual RealtimeSince	RealtimeSupport () const =0
	Since which version of Audacity has the effect supported realtime? More...

bool	SupportsRealtime () const

virtual bool	SupportsAutomation () const =0
	Whether the effect has any automatable controls. More...

virtual bool	EnablesDebug () const
	Whether the effect dialog should have a Debug button; default, always false. More...

virtual ManualPageID	ManualPage () const
	Name of a page in the Audacity alpha manual, default is empty. More...

virtual FilePath	HelpPage () const
	Fully qualified local help file name, default is empty. More...

virtual bool	IsHiddenFromMenus () const
	Default is false. More...

Public Member Functions inherited from ComponentInterface
virtual	~ComponentInterface ()

virtual PluginPath	GetPath () const =0

virtual ComponentInterfaceSymbol	GetSymbol () const =0

virtual VendorSymbol	GetVendor () const =0

virtual wxString	GetVersion () const =0

virtual TranslatableString	GetDescription () const =0

TranslatableString	GetName () const

Public Member Functions inherited from StatefulEffectUIServices
	~StatefulEffectUIServices () override

std::unique_ptr< EffectEditor >	PopulateUI (const EffectPlugin &plugin, ShuttleGui &S, EffectInstance &instance, EffectSettingsAccess &access, const EffectOutputs *pOutputs) const override
	Allows PopulateOrExchange to return null. More...

virtual std::unique_ptr< EffectEditor >	PopulateOrExchange (ShuttleGui &S, EffectInstance &instance, EffectSettingsAccess &access, const EffectOutputs *pOutputs)
	Add controls to effect panel; always succeeds. More...

virtual bool	TransferDataToWindow (const EffectSettings &settings)

virtual bool	TransferDataFromWindow (EffectSettings &settings)

Public Member Functions inherited from BasicEffectUIServices
int	ShowClientInterface (const EffectPlugin &plugin, wxWindow &parent, wxDialog &dialog, EffectEditor *pEditor, bool forceModal) const override

void	ExportPresets (const EffectPlugin &plugin, const EffectSettings &settings) const override

OptionalMessage	ImportPresets (const EffectPlugin &plugin, EffectSettings &settings) const override

void	ShowOptions (const EffectPlugin &plugin) const override

bool	ValidateUI (const EffectPlugin &context, EffectSettings &) const override

bool	CloseUI () const override

Public Member Functions inherited from EffectUIServices
virtual	~EffectUIServices ()

virtual int	ShowHostInterface (EffectBase &plugin, wxWindow &parent, const EffectDialogFactory &factory, std::shared_ptr< EffectInstance > &pInstance, EffectSettingsAccess &access, bool forceModal=false)

virtual int	ShowClientInterface (const EffectPlugin &plugin, wxWindow &parent, wxDialog &dialog, EffectEditor *pEditor, bool forceModal=false) const =0

virtual std::unique_ptr< EffectEditor >	PopulateUI (const EffectPlugin &plugin, ShuttleGui &S, EffectInstance &instance, EffectSettingsAccess &access, const EffectOutputs *pOutputs) const =0
	Adds controls to a panel that is given as the parent window of `S` More...

virtual void	ExportPresets (const EffectPlugin &plugin, const EffectSettings &settings) const =0

virtual OptionalMessage	ImportPresets (const EffectPlugin &plugin, EffectSettings &settings) const =0

virtual void	ShowOptions (const EffectPlugin &plugin) const =0

virtual bool	ValidateUI (const EffectPlugin &context, EffectSettings &settings) const =0

virtual bool	CloseUI () const =0

Static Public Member Functions
static EffectLoudness *	FetchParameters (EffectLoudness &e, EffectSettings &)

Static Public Member Functions inherited from Effect
static Effect *	FetchParameters (Effect &e, EffectSettings &)

Static Public Member Functions inherited from EffectBase
static std::optional< InstancePointer >	FindInstance (EffectPlugin &plugin)

static InstanceFinder	DefaultInstanceFinder (EffectPlugin &plugin)

Static Public Member Functions inherited from EffectDefinitionInterface
static Identifier	GetSquashedName (const Identifier &ident)
	A utility that strips spaces and CamelCases a name. More...

Static Public Member Functions inherited from EffectUIServices
static int	DoMessageBox (const EffectPlugin &plugin, const TranslatableString &message, long style=DefaultMessageBoxStyle, const TranslatableString &titleStr={})

Static Public Attributes
static const ComponentInterfaceSymbol	Symbol { XO("Loudness Normalization") }

Static Public Attributes inherited from EffectPlugin
static const wxString	kUserPresetIdent = wxT("User Preset:")

static const wxString	kFactoryPresetIdent = wxT("Factory Preset:")

static const wxString	kCurrentSettingsIdent = wxT("<Current Settings>")

static const wxString	kFactoryDefaultsIdent = wxT("<Factory Defaults>")

Private Member Functions
void	AllocBuffers (TrackList &outputs)

void	FreeBuffers ()

bool	ProcessOne (WaveChannel &track, size_t nChannels, double curT0, double curT1, float mult, EBUR128 *pLoudnessProcessor)

void	LoadBufferBlock (WaveChannel &track, size_t nChannels, sampleCount pos, size_t len)

bool	AnalyseBufferBlock (EBUR128 &loudnessProcessor)

bool	ProcessBufferBlock (float mult)

bool	StoreBufferBlock (WaveChannel &track, size_t nChannels, sampleCount pos, size_t len)

bool	UpdateProgress ()

void	OnChoice (wxCommandEvent &evt)

void	OnUpdateUI (wxCommandEvent &evt)

void	UpdateUI ()

const EffectParameterMethods &	Parameters () const override

Static Private Member Functions
static bool	GetTrackRMS (WaveChannel &track, double curT0, double curT1, float &rms)

Private Attributes
wxWeakRef< wxWindow >	mUIParent {}

bool	mStereoInd

double	mLUFSLevel

double	mRMSLevel

bool	mDualMono

int	mNormalizeTo

double	mProgressVal

int	mSteps

TranslatableString	mProgressMsg

double	mTrackLen

double	mCurRate

wxSimplebook *	mBook

wxChoice *	mChoice

wxStaticText *	mWarning

wxCheckBox *	mStereoIndCheckBox

wxCheckBox *	mDualMonoCheckBox

Floats	mTrackBuffer [2]

size_t	mTrackBufferLen

size_t	mTrackBufferCapacity

bool	mProcStereo

Static Private Attributes
static constexpr EffectParameter	StereoInd

static constexpr EffectParameter	LUFSLevel

static constexpr EffectParameter	RMSLevel

static constexpr EffectParameter	DualMono

static constexpr EffectParameter	NormalizeTo

Additional Inherited Members
Public Attributes inherited from EffectBase
std::shared_ptr< TrackList >	mTracks {}

int	mNumTracks {}

BasicUI::ProgressDialog *	mProgress {}

double	mProjectRate {}

WaveTrackFactory *	mFactory {}

double	mT0 {}

double	mT1 {}

bool	mIsPreview { false }

Protected Member Functions inherited from Effect
bool	CheckWhetherSkipEffect (const EffectSettings &settings) const override
	Default implementation returns false. More...

double	CalcPreviewInputLength (const EffectSettings &settings, double previewLength) const override
	Default implementation returns `previewLength` More...

bool	TotalProgress (double frac, const TranslatableString &={}) const

bool	TrackProgress (int whichTrack, double frac, const TranslatableString &={}) const

bool	TrackGroupProgress (int whichGroup, double frac, const TranslatableString &={}) const

int	GetNumWaveTracks () const

int	GetNumWaveGroups () const

void	GetBounds (const WaveTrack &track, sampleCount start, sampleCount len)

Protected Member Functions inherited from EffectBase
virtual bool	CheckWhetherSkipEffect (const EffectSettings &settings) const =0
	After Init(), tell whether Process() should be skipped. More...

void	SetLinearEffectFlag (bool linearEffectFlag)

void	SetPreviewFullSelectionFlag (bool previewDurationFlag)

bool	IsPreviewing () const

const TrackList *	inputTracks () const

const AudacityProject *	FindProject () const

Protected Attributes inherited from EffectBase
wxArrayString	mPresetNames

unsigned	mUIFlags { 0 }

Detailed Description

An Effect to bring the loudness level up to a chosen level.

Definition at line 32 of file Loudness.h.

Member Enumeration Documentation

◆ kNormalizeTargets

enum EffectLoudness::kNormalizeTargets

Enumerator
kLoudness
kRMS
nAlgos

Definition at line 35 of file Loudness.h.

   {
      kLoudness,
      kRMS,
      nAlgos
   };

Constructor & Destructor Documentation

◆ EffectLoudness()

EffectLoudness::EffectLoudness ( )

Definition at line 60 of file Loudness.cpp.

{
   Parameters().Reset(*this);
   SetLinearEffectFlag(false);
}

References Parameters(), EffectParameterMethods::Reset(), and EffectBase::SetLinearEffectFlag().

Referenced by Parameters().

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◆ ~EffectLoudness()

EffectLoudness::~EffectLoudness ( )

virtual

Definition at line 66 of file Loudness.cpp.

67{

68}

Member Function Documentation

◆ AllocBuffers()

void EffectLoudness::AllocBuffers ( TrackList & outputs )

private

Get required buffer size for the largest whole track and allocate buffers. This reduces the amount of allocations required.

Definition at line 351 of file Loudness.cpp.

{
   mTrackBufferCapacity = 0;
   bool stereoTrackFound = false;
   double maxSampleRate = 0;
   mProcStereo = false;
 
   for (auto track : outputs.Selected<WaveTrack>() + &Track::Any) {
      mTrackBufferCapacity = std::max(mTrackBufferCapacity, track->GetMaxBlockSize());
      maxSampleRate = std::max(maxSampleRate, track->GetRate());
 
      // There is a stereo track
      if(track->IsLeader())
         stereoTrackFound = true;
   }
 
   // Initiate a processing buffer. This buffer will (most likely)
   // be shorter than the length of the track being processed.
   mTrackBuffer[0].reinit(mTrackBufferCapacity);
 
   if(!mStereoInd && stereoTrackFound)
      mTrackBuffer[1].reinit(mTrackBufferCapacity);
}

References Track::Any(), mProcStereo, mStereoInd, mTrackBuffer, mTrackBufferCapacity, ArrayOf< X >::reinit(), and TrackList::Selected().

Referenced by Process().

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◆ AnalyseBufferBlock()

bool EffectLoudness::AnalyseBufferBlock ( EBUR128 & loudnessProcessor )

private

Calculates sample sum (for DC) and EBU R128 weighted square sum (for loudness).

Definition at line 468 of file Loudness.cpp.

{
   for(size_t i = 0; i < mTrackBufferLen; i++)
   {
      loudnessProcessor.ProcessSampleFromChannel(mTrackBuffer[0][i], 0);
      if (mProcStereo)
         loudnessProcessor.ProcessSampleFromChannel(mTrackBuffer[1][i], 1);
      loudnessProcessor.NextSample();
   }
 
   if (!UpdateProgress())
      return false;
   return true;
}

References mProcStereo, mTrackBuffer, mTrackBufferLen, EBUR128::NextSample(), EBUR128::ProcessSampleFromChannel(), and UpdateProgress().

Referenced by ProcessOne().

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◆ FetchParameters()

static EffectLoudness * EffectLoudness::FetchParameters	(	EffectLoudness &	e,
		EffectSettings &
	)

inlinestatic

Definition at line 43 of file Loudness.h.

43{ return &e; }

◆ FreeBuffers()

void EffectLoudness::FreeBuffers ( )

private

Definition at line 375 of file Loudness.cpp.

{
   mTrackBuffer[0].reset();
   mTrackBuffer[1].reset();
}

References mTrackBuffer.

Referenced by Process().

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◆ GetDescription()

TranslatableString EffectLoudness::GetDescription ( ) const

overridevirtual

Implements ComponentInterface.

Definition at line 77 of file Loudness.cpp.

{
   return XO("Sets the loudness of one or more tracks");
}

References XO().

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◆ GetSymbol()

ComponentInterfaceSymbol EffectLoudness::GetSymbol ( ) const

overridevirtual

Implements ComponentInterface.

Definition at line 72 of file Loudness.cpp.

{
   return Symbol;
}

References Symbol.

◆ GetTrackRMS()

bool EffectLoudness::GetTrackRMS	(	WaveChannel &	track,
		double	curT0,
		double	curT1,
		float &	rms
	)

staticprivate

Definition at line 381 of file Loudness.cpp.

{
   // set mRMS.  No progress bar here as it's fast.
   float _rms = track.GetRMS(curT0, curT1); // may throw
   rms = _rms;
   return true;
}

References WaveChannel::GetRMS().

Referenced by Process().

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◆ GetType()

EffectType EffectLoudness::GetType ( ) const

overridevirtual

Type determines how it behaves.

Implements EffectDefinitionInterface.

Definition at line 89 of file Loudness.cpp.

{
   return EffectTypeProcess;
}

References EffectTypeProcess.

◆ LoadBufferBlock()

void EffectLoudness::LoadBufferBlock	(	WaveChannel &	track,
		size_t	nChannels,
		sampleCount	pos,
		size_t	len
	)

private

Definition at line 447 of file Loudness.cpp.

{
   size_t idx = 0;
   const auto getOne = [&](WaveChannel &channel) {
      // Get the samples from the track and put them in the buffer
      channel.GetFloats(mTrackBuffer[idx].get(), pos, len);
   };
 
   if (nChannels == 1)
      getOne(track);
   else
      for (const auto channel : track.GetTrack().Channels()) {
         getOne(*channel);
         ++idx;
      }
   mTrackBufferLen = len;
}

References WaveTrack::Channels(), WaveChannel::GetTrack(), mTrackBuffer, and mTrackBufferLen.

Referenced by ProcessOne().

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◆ ManualPage()

ManualPageID EffectLoudness::ManualPage ( ) const

overridevirtual

Name of a page in the Audacity alpha manual, default is empty.

Reimplemented from EffectDefinitionInterface.

Definition at line 82 of file Loudness.cpp.

{
   return L"Loudness_Normalization";
}

◆ OnChoice()

void EffectLoudness::OnChoice ( wxCommandEvent & evt )

private

Definition at line 526 of file Loudness.cpp.

{
   mChoice->GetValidator()->TransferFromWindow();
   mBook->SetSelection( mNormalizeTo );
   UpdateUI();
   mDualMonoCheckBox->Enable(mNormalizeTo == kLoudness);
}

References kLoudness, mBook, mChoice, mDualMonoCheckBox, mNormalizeTo, and UpdateUI().

Referenced by TransferDataToWindow().

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◆ OnUpdateUI()

void EffectLoudness::OnUpdateUI ( wxCommandEvent & evt )

private

Definition at line 534 of file Loudness.cpp.

{
   UpdateUI();
}

References UpdateUI().

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◆ Parameters()

const EffectParameterMethods & EffectLoudness::Parameters ( ) const

overrideprivatevirtual

Reimplemented from Effect.

Definition at line 41 of file Loudness.cpp.

{
   static CapturedParameters<EffectLoudness,
      StereoInd, LUFSLevel, RMSLevel, DualMono, NormalizeTo
   > parameters;
   return parameters;
}

References DualMono, EffectLoudness(), LUFSLevel, NormalizeTo, RMSLevel, and StereoInd.

Referenced by EffectLoudness().

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◆ PopulateOrExchange()

std::unique_ptr< EffectEditor > EffectLoudness::PopulateOrExchange	(	ShuttleGui &	S,
		EffectInstance &	instance,
		EffectSettingsAccess &	access,
		const EffectOutputs *	pOutputs
	)

overridevirtual

Add controls to effect panel; always succeeds.

Returns: if not null, then return it from PopulateUI instead of a DefaultEffectEditor; default implementation returns null

Reimplemented from StatefulEffectUIServices.

Definition at line 225 of file Loudness.cpp.

{
   mUIParent = S.GetParent();
   S.StartVerticalLay(0);
   {
      S.StartMultiColumn(2, wxALIGN_CENTER);
      {
         S.StartVerticalLay(false);
         {
            S.StartHorizontalLay(wxALIGN_LEFT, false);
            {
               S.AddVariableText(XO("&Normalize"), false,
                  wxALIGN_CENTER_VERTICAL | wxALIGN_LEFT);
 
               mChoice = S
                  .Validator<wxGenericValidator>( &mNormalizeTo )
                  .AddChoice( {},
                     Msgids(kNormalizeTargetStrings, nAlgos),
                     mNormalizeTo );
               S
                  .AddVariableText(XO("t&o"), false,
                     wxALIGN_CENTER_VERTICAL | wxALIGN_LEFT);
 
               // Use a notebook so we can have two controls but show only one
               // They target different variables with their validators
               mBook =
               S
                  .StartSimplebook();
               {
                  S.StartNotebookPage({});
                  {
                     S.StartHorizontalLay(wxALIGN_LEFT, false);
                     {
                        S
                           /* i18n-hint: LUFS is a particular method for measuring loudnesss */
                           .Name( XO("Loudness LUFS") )
                           .Validator<FloatingPointValidator<double>>(
                              2, &mLUFSLevel,
                              NumValidatorStyle::ONE_TRAILING_ZERO,
                              LUFSLevel.min, LUFSLevel.max )
                           .AddTextBox( {}, L"", 10);
 
                        /* i18n-hint: LUFS is a particular method for measuring loudnesss */
                        S
                           .AddVariableText(XO("LUFS"), false,
                              wxALIGN_CENTER_VERTICAL | wxALIGN_LEFT);
                     }
                     S.EndHorizontalLay();
                  }
                  S.EndNotebookPage();
 
                  S.StartNotebookPage({});
                  {
                     S.StartHorizontalLay(wxALIGN_LEFT, false);
                     {
                        S
                           .Name( XO("RMS dB") )
                           .Validator<FloatingPointValidator<double>>(
                              2, &mRMSLevel,
                              NumValidatorStyle::ONE_TRAILING_ZERO,
                              RMSLevel.min, RMSLevel.max )
                           .AddTextBox( {}, L"", 10);
 
                        S
                           .AddVariableText(XO("dB"), false,
                              wxALIGN_CENTER_VERTICAL | wxALIGN_LEFT);
                     }
                     S.EndHorizontalLay();
                  }
                  S.EndNotebookPage();
               }
               S.EndSimplebook();
 
               mWarning =
               S
                  .AddVariableText( {}, false,
                     wxALIGN_CENTER_VERTICAL | wxALIGN_LEFT);
            }
            S.EndHorizontalLay();
 
            mStereoIndCheckBox = S
               .Validator<wxGenericValidator>( &mStereoInd )
               .AddCheckBox(XXO("Normalize &stereo channels independently"),
                  mStereoInd );
 
            mDualMonoCheckBox = S
               .Validator<wxGenericValidator>( &mDualMono )
               .AddCheckBox(XXO("&Treat mono as dual-mono (recommended)"),
                  mDualMono );
         }
         S.EndVerticalLay();
      }
      S.EndMultiColumn();
   }
   S.EndVerticalLay();
   return nullptr;
}

References kNormalizeTargetStrings, LUFSLevel, EffectParameter< Structure, Member, Type, Value >::max, mBook, mChoice, mDualMono, mDualMonoCheckBox, EffectParameter< Structure, Member, Type, Value >::min, mLUFSLevel, mNormalizeTo, mRMSLevel, Msgids(), mStereoInd, mStereoIndCheckBox, mUIParent, mWarning, nAlgos, RMSLevel, S, XO(), and XXO().

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◆ Process()

bool EffectLoudness::Process	(	EffectInstance &	instance,
		EffectSettings &	settings
	)

overridevirtual

Implements StatefulEffectBase.

Definition at line 96 of file Loudness.cpp.

{
   const float ratio = DB_TO_LINEAR(
      (mNormalizeTo == kLoudness)
         ?  // LU use 10*log10(...) instead of 20*log10(...)
            // so multiply level by 2
            std::clamp<double>(mLUFSLevel * 2, LUFSLevel.min, LUFSLevel.max)
         :  // RMS
            std::clamp<double>(mRMSLevel, RMSLevel.min, RMSLevel.max)
   );
 
   // Iterate over each track
   EffectOutputTracks outputs { *mTracks, {{ mT0, mT1 }} };
   bool bGoodResult = true;
   auto topMsg = XO("Normalizing Loudness...\n");
 
   AllocBuffers(outputs.Get());
   mProgressVal = 0;
 
   for (auto pTrack : outputs.Get().Selected<WaveTrack>()) {
      // Get start and end times from track
      double trackStart = pTrack->GetStartTime();
      double trackEnd = pTrack->GetEndTime();
 
      // Set the current bounds to whichever left marker is
      // greater and whichever right marker is less:
      const double curT0 = std::max(trackStart, mT0);
      const double curT1 = std::min(trackEnd, mT1);
 
      // Get the track rate
      mCurRate = pTrack->GetRate();
 
      wxString msg;
      auto trackName = pTrack->GetName();
      // This affects only the progress indicator update during ProcessOne
      mSteps = (mNormalizeTo == kLoudness) ? 2 : 1;
 
      mProgressMsg =
         topMsg + XO("Analyzing: %s").Format(trackName);
 
      const auto channels = pTrack->Channels();
      auto nChannels = mStereoInd ? 1 : channels.size();
      mProcStereo = nChannels > 1;
 
      const auto processOne = [&](WaveChannel &track){
         std::optional<EBUR128> loudnessProcessor;
         float RMS[2];
 
         if (mNormalizeTo == kLoudness) {
            loudnessProcessor.emplace(mCurRate, nChannels);
            if (!ProcessOne(track, nChannels,
               curT0, curT1, 0, &*loudnessProcessor))
               // Processing failed -> abort
               return false;
         }
         else {
            // RMS
            if (mProcStereo) {
               size_t idx = 0;
               for (const auto pChannel : channels) {
                  if (!GetTrackRMS(*pChannel, curT0, curT1, RMS[idx]))
                     return false;
                  ++idx;
               }
            }
            else {
               if (!GetTrackRMS(track, curT0, curT1, RMS[0]))
                  return false;
            }
         }
 
         // Calculate normalization values the analysis results
         float extent;
         if (mNormalizeTo == kLoudness)
            extent = loudnessProcessor->IntegrativeLoudness();
         else {
            // RMS
            extent = RMS[0];
            if (mProcStereo)
               // RMS: use average RMS, average must be calculated in quadratic
               // domain.
               extent = sqrt((RMS[0] * RMS[0] + RMS[1] * RMS[1]) / 2.0);
         }
 
         if (extent == 0.0) {
            FreeBuffers();
            return false;
         }
         float mult = ratio / extent;
 
         if (mNormalizeTo == kLoudness) {
            // Target half the LUFS value if mono (or independent processed
            // stereo) shall be treated as dual mono.
            if (nChannels == 1 &&
               (mDualMono || !IsMono(track)))
               mult /= 2.0;
 
            // LUFS are related to square values so the multiplier must be the
            // xroot.
            mult = sqrt(mult);
         }
 
         mProgressMsg = topMsg + XO("Processing: %s").Format( trackName );
         if (!ProcessOne(track, nChannels, curT0, curT1, mult, nullptr)) {
            // Processing failed -> abort
            return false;
         }
         return true;
      };
 
      if (mStereoInd) {
         for (const auto pChannel : channels)
            if (!(bGoodResult = processOne(*pChannel)))
               goto done;
      }
      else {
         if (!(bGoodResult = processOne(*pTrack)))
            break;
      }
   }
done:
 
   if (bGoodResult)
      outputs.Commit();
 
   FreeBuffers();
   return bGoodResult;
}

References AllocBuffers(), DB_TO_LINEAR, FreeBuffers(), GetTrackRMS(), AudioGraph::IsMono(), kLoudness, LUFSLevel, EffectParameter< Structure, Member, Type, Value >::max, mCurRate, mDualMono, EffectParameter< Structure, Member, Type, Value >::min, min(), mLUFSLevel, mNormalizeTo, mProcStereo, mProgressMsg, mProgressVal, mRMSLevel, mSteps, mStereoInd, EffectBase::mT0, EffectBase::mT1, EffectBase::mTracks, ProcessOne(), RMSLevel, staffpad::audio::simd::sqrt(), and XO().

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◆ ProcessBufferBlock()

bool EffectLoudness::ProcessBufferBlock ( float mult )

private

Definition at line 483 of file Loudness.cpp.

{
   for(size_t i = 0; i < mTrackBufferLen; i++)
   {
      mTrackBuffer[0][i] = mTrackBuffer[0][i] * mult;
      if (mProcStereo)
         mTrackBuffer[1][i] = mTrackBuffer[1][i] * mult;
   }
 
   if(!UpdateProgress())
      return false;
   return true;
}

References mProcStereo, mTrackBuffer, mTrackBufferLen, and UpdateProgress().

Referenced by ProcessOne().

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◆ ProcessOne()

bool EffectLoudness::ProcessOne	(	WaveChannel &	track,
		size_t	nChannels,
		double	curT0,
		double	curT1,
		float	mult,
		EBUR128 *	pLoudnessProcessor
	)

private

ProcessOne() takes a track, transforms it to bunch of buffer-blocks, and executes ProcessData, on it... uses mMult to normalize a track. mMult must be set before this is called In analyse mode, it executes the selected analyse operation on it... mMult does not have to be set before this is called

Definition at line 396 of file Loudness.cpp.

{
   // Transform the marker timepoints to samples
   auto start = track.TimeToLongSamples(curT0);
   auto end   = track.TimeToLongSamples(curT1);
 
   // Get the length of the buffer (as double). len is
   // used simply to calculate a progress meter, so it is easier
   // to make it a double now than it is to do it later
   mTrackLen = (end - start).as_double();
 
   // Abort if the right marker is not to the right of the left marker
   if (curT1 <= curT0)
      return false;
 
   // Go through the track one buffer at a time. s counts which
   // sample the current buffer starts at.
   auto s = start;
   while (s < end) {
      // Get a block of samples (smaller than the size of the buffer)
      // Adjust the block size if it is the final block in the track
      auto blockLen = limitSampleBufferSize(
         track.GetBestBlockSize(s),
         mTrackBufferCapacity);
 
      const size_t remainingLen = (end - s).as_size_t();
      blockLen = blockLen > remainingLen ? remainingLen : blockLen;
      LoadBufferBlock(track, nChannels, s, blockLen);
 
      // Process the buffer.
      if (pLoudnessProcessor) {
         if (!AnalyseBufferBlock(*pLoudnessProcessor))
            return false;
      }
      else {
         if (!ProcessBufferBlock(mult))
            return false;
         if (!StoreBufferBlock(track, nChannels, s, blockLen))
            return false;
      }
 
      // Increment s one blockfull of samples
      s += blockLen;
   }
 
   // Return true because the effect processing succeeded ... unless cancelled
   return true;
}

References AnalyseBufferBlock(), PackedArray::end(), WaveChannel::GetBestBlockSize(), limitSampleBufferSize(), LoadBufferBlock(), mTrackBufferCapacity, mTrackLen, ProcessBufferBlock(), StoreBufferBlock(), and WideSampleSequence::TimeToLongSamples().

Referenced by Process().

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◆ StoreBufferBlock()

bool EffectLoudness::StoreBufferBlock	(	WaveChannel &	track,
		size_t	nChannels,
		sampleCount	pos,
		size_t	len
	)

private

Definition at line 497 of file Loudness.cpp.

{
   size_t idx = 0;
   const auto setOne = [&](WaveChannel &channel){
      // Copy the newly-changed samples back onto the track.
      return channel.Set(
         (samplePtr) mTrackBuffer[idx].get(), floatSample, pos, len);
   };
 
   if (nChannels == 1)
      return setOne(track);
   else {
      for (auto channel : track.GetTrack().Channels()) {
         if (!setOne(*channel))
            return false;
         ++idx;
      }
      return true;
   }
}

References WaveTrack::Channels(), floatSample, WaveChannel::GetTrack(), and mTrackBuffer.

Referenced by ProcessOne().

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◆ TransferDataFromWindow()

bool EffectLoudness::TransferDataFromWindow ( EffectSettings & settings )

overridevirtual

Update the given settings from controls; default does nothing, returns true

Reimplemented from StatefulEffectUIServices.

Definition at line 338 of file Loudness.cpp.

{
   if (!mUIParent->Validate() || !mUIParent->TransferDataFromWindow())
   {
      return false;
   }
   return true;
}

References mUIParent.

◆ TransferDataToWindow()

bool EffectLoudness::TransferDataToWindow ( const EffectSettings & settings )

overridevirtual

Update controls for the settings; default does nothing, returns true

Reimplemented from StatefulEffectUIServices.

Definition at line 325 of file Loudness.cpp.

{
   if (!mUIParent->TransferDataToWindow())
   {
      return false;
   }
 
   // adjust controls which depend on mchoice
   wxCommandEvent dummy;
   OnChoice(dummy);
   return true;
}

References mUIParent, and OnChoice().

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◆ UpdateProgress()

bool EffectLoudness::UpdateProgress ( )

private

Definition at line 519 of file Loudness.cpp.

{
   mProgressVal += (double(1 + mProcStereo) * double(mTrackBufferLen)
                 / (double(GetNumWaveTracks()) * double(mSteps) * mTrackLen));
   return !TotalProgress(mProgressVal, mProgressMsg);
}

References Effect::GetNumWaveTracks(), mProcStereo, mProgressMsg, mProgressVal, mSteps, mTrackBufferLen, mTrackLen, and Effect::TotalProgress().

Referenced by AnalyseBufferBlock(), and ProcessBufferBlock().

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◆ UpdateUI()

void EffectLoudness::UpdateUI ( )

private

Definition at line 539 of file Loudness.cpp.

{
   if (!mUIParent->TransferDataFromWindow())
   {
      mWarning->SetLabel(_("(Maximum 0dB)"));
      // TODO: recalculate layout here
      EffectEditor::EnableApply(mUIParent, false);
      return;
   }
   mWarning->SetLabel(wxT(""));
   EffectEditor::EnableApply(mUIParent, true);
}

References _, EffectEditor::EnableApply(), mUIParent, mWarning, and wxT().

Referenced by OnChoice(), and OnUpdateUI().

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Member Data Documentation

◆ DualMono

constexpr EffectParameter EffectLoudness::DualMono

staticconstexprprivate

Initial value:

{ &EffectLoudness::mDualMono,

L"DualMono", true, false, true, 1 }

Definition at line 124 of file Loudness.h.

Referenced by Parameters().

◆ LUFSLevel

constexpr EffectParameter EffectLoudness::LUFSLevel

staticconstexprprivate

Initial value:

{ &EffectLoudness::mLUFSLevel,

L"LUFSLevel", -23.0, -145.0, 0.0, 1 }

Definition at line 120 of file Loudness.h.

Referenced by Parameters(), PopulateOrExchange(), and Process().

◆ mBook

wxSimplebook* EffectLoudness::mBook

private

Definition at line 104 of file Loudness.h.

Referenced by OnChoice(), and PopulateOrExchange().

◆ mChoice

wxChoice* EffectLoudness::mChoice

private

Definition at line 105 of file Loudness.h.

Referenced by OnChoice(), and PopulateOrExchange().

◆ mCurRate

double EffectLoudness::mCurRate

private

Definition at line 102 of file Loudness.h.

Referenced by Process().

◆ mDualMono

bool EffectLoudness::mDualMono

private

Definition at line 95 of file Loudness.h.

Referenced by PopulateOrExchange(), and Process().

◆ mDualMonoCheckBox

wxCheckBox* EffectLoudness::mDualMonoCheckBox

private

Definition at line 108 of file Loudness.h.

Referenced by OnChoice(), and PopulateOrExchange().

◆ mLUFSLevel

double EffectLoudness::mLUFSLevel

private

Definition at line 93 of file Loudness.h.

Referenced by PopulateOrExchange(), and Process().

◆ mNormalizeTo

int EffectLoudness::mNormalizeTo

private

Definition at line 96 of file Loudness.h.

Referenced by OnChoice(), PopulateOrExchange(), and Process().

◆ mProcStereo

bool EffectLoudness::mProcStereo

private

Definition at line 113 of file Loudness.h.

Referenced by AllocBuffers(), AnalyseBufferBlock(), Process(), ProcessBufferBlock(), and UpdateProgress().

◆ mProgressMsg

TranslatableString EffectLoudness::mProgressMsg

private

Definition at line 100 of file Loudness.h.

Referenced by Process(), and UpdateProgress().

◆ mProgressVal

double EffectLoudness::mProgressVal

private

Definition at line 98 of file Loudness.h.

Referenced by Process(), and UpdateProgress().

◆ mRMSLevel

double EffectLoudness::mRMSLevel

private

Definition at line 94 of file Loudness.h.

Referenced by PopulateOrExchange(), and Process().

◆ mSteps

int EffectLoudness::mSteps

private

Definition at line 99 of file Loudness.h.

Referenced by Process(), and UpdateProgress().

◆ mStereoInd

bool EffectLoudness::mStereoInd

private

Definition at line 92 of file Loudness.h.

Referenced by AllocBuffers(), PopulateOrExchange(), and Process().

◆ mStereoIndCheckBox

wxCheckBox* EffectLoudness::mStereoIndCheckBox

private

Definition at line 107 of file Loudness.h.

Referenced by PopulateOrExchange().

◆ mTrackBuffer

Floats EffectLoudness::mTrackBuffer[2]

private

Definition at line 110 of file Loudness.h.

Referenced by AllocBuffers(), AnalyseBufferBlock(), FreeBuffers(), LoadBufferBlock(), ProcessBufferBlock(), and StoreBufferBlock().

◆ mTrackBufferCapacity

size_t EffectLoudness::mTrackBufferCapacity

private

Definition at line 112 of file Loudness.h.

Referenced by AllocBuffers(), and ProcessOne().

◆ mTrackBufferLen

size_t EffectLoudness::mTrackBufferLen

private

Definition at line 111 of file Loudness.h.

Referenced by AnalyseBufferBlock(), LoadBufferBlock(), ProcessBufferBlock(), and UpdateProgress().

◆ mTrackLen

double EffectLoudness::mTrackLen

private

Definition at line 101 of file Loudness.h.

Referenced by ProcessOne(), and UpdateProgress().

◆ mUIParent

wxWeakRef<wxWindow> EffectLoudness::mUIParent {}

private

Definition at line 90 of file Loudness.h.

Referenced by PopulateOrExchange(), TransferDataFromWindow(), TransferDataToWindow(), and UpdateUI().

◆ mWarning

wxStaticText* EffectLoudness::mWarning

private

Definition at line 106 of file Loudness.h.

Referenced by PopulateOrExchange(), and UpdateUI().

◆ NormalizeTo

constexpr EffectParameter EffectLoudness::NormalizeTo

staticconstexprprivate

Initial value:

{ &EffectLoudness::mNormalizeTo,

L"NormalizeTo", (int)kLoudness , 0 , nAlgos-1, 1 }

Definition at line 126 of file Loudness.h.

Referenced by Parameters().

◆ RMSLevel

constexpr EffectParameter EffectLoudness::RMSLevel

staticconstexprprivate

Initial value:

{ &EffectLoudness::mRMSLevel,

L"RMSLevel", -20.0, -145.0, 0.0, 1 }

Definition at line 122 of file Loudness.h.

Referenced by Parameters(), PopulateOrExchange(), and Process().

◆ StereoInd

constexpr EffectParameter EffectLoudness::StereoInd

staticconstexprprivate

Initial value:

{ &EffectLoudness::mStereoInd,

L"StereoIndependent", false, false, true, 1 }

Definition at line 118 of file Loudness.h.

Referenced by Parameters().

◆ Symbol

const ComponentInterfaceSymbol EffectLoudness::Symbol { XO("Loudness Normalization") }

static

Definition at line 44 of file Loudness.h.

Referenced by GetSymbol().

The documentation for this class was generated from the following files:

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ kNormalizeTargets

Constructor & Destructor Documentation

◆ EffectLoudness()

◆ ~EffectLoudness()

Member Function Documentation

◆ AllocBuffers()

◆ AnalyseBufferBlock()

◆ FetchParameters()

◆ FreeBuffers()

◆ GetDescription()

◆ GetSymbol()

◆ GetTrackRMS()

◆ GetType()

◆ LoadBufferBlock()

◆ ManualPage()

◆ OnChoice()

◆ OnUpdateUI()

◆ Parameters()

◆ PopulateOrExchange()

◆ Process()

◆ ProcessBufferBlock()

◆ ProcessOne()

◆ StoreBufferBlock()

◆ TransferDataFromWindow()

◆ TransferDataToWindow()

◆ UpdateProgress()

◆ UpdateUI()

Member Data Documentation

◆ DualMono

◆ LUFSLevel

◆ mBook

◆ mChoice

◆ mCurRate

◆ mDualMono

◆ mDualMonoCheckBox

◆ mLUFSLevel

◆ mNormalizeTo

◆ mProcStereo

◆ mProgressMsg

◆ mProgressVal

◆ mRMSLevel

◆ mSteps

◆ mStereoInd

◆ mStereoIndCheckBox

◆ mTrackBuffer

◆ mTrackBufferCapacity

◆ mTrackBufferLen

◆ mTrackLen

◆ mUIParent

◆ mWarning

◆ NormalizeTo

◆ RMSLevel

◆ StereoInd

◆ Symbol