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

#include <LoudnessBase.h>

Inheritance diagram for LoudnessBase:

Collaboration diagram for LoudnessBase:

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 Member Functions
	LoudnessBase ()

virtual	~LoudnessBase ()

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

bool	UpdateProgress ()

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

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 NumericFormatID	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)

double	GetDefaultDuration ()

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

Static Public Member Functions
static LoudnessBase *	FetchParameters (LoudnessBase &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 Attributes
static const ComponentInterfaceSymbol	Symbol

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>")

Protected Member Functions
const EffectParameterMethods &	Parameters () const override

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
bool	mStereoInd

double	mLUFSLevel

double	mRMSLevel

bool	mDualMono

int	mNormalizeTo

double	mProgressVal

int	mSteps

TranslatableString	mProgressMsg

double	mTrackLen

double	mCurRate

Floats	mTrackBuffer [2]

size_t	mTrackBufferLen

size_t	mTrackBufferCapacity

bool	mProcStereo

Protected Attributes inherited from EffectBase
double	mF0 {}

double	mF1 {}

wxArrayString	mPresetNames

unsigned	mUIFlags { 0 }

Static Protected Attributes
static constexpr EffectParameter	StereoInd

static constexpr EffectParameter	LUFSLevel

static constexpr EffectParameter	RMSLevel

static constexpr EffectParameter	DualMono

static constexpr EffectParameter	NormalizeTo

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)

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

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 }

Detailed Description

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

Definition at line 20 of file LoudnessBase.h.

Member Enumeration Documentation

◆ kNormalizeTargets

enum LoudnessBase::kNormalizeTargets

Enumerator
kLoudness
kRMS
nAlgos

Definition at line 23 of file LoudnessBase.h.

   {
      kLoudness,
      kRMS,
      nAlgos
   };

Constructor & Destructor Documentation

◆ LoudnessBase()

LoudnessBase::LoudnessBase ( )

Definition at line 34 of file LoudnessBase.cpp.

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

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

Referenced by Parameters().

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◆ ~LoudnessBase()

LoudnessBase::~LoudnessBase ( )

virtual

Definition at line 40 of file LoudnessBase.cpp.

41{

42}

Member Function Documentation

◆ AllocBuffers()

void LoudnessBase::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 214 of file LoudnessBase.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->NChannels() == 2)
         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 LoudnessBase::AnalyseBufferBlock ( EBUR128 & loudnessProcessor )

private

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

Definition at line 336 of file LoudnessBase.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 LoudnessBase * LoudnessBase::FetchParameters	(	LoudnessBase &	e,
		EffectSettings &
	)

inlinestatic

Definition at line 30 of file LoudnessBase.h.

   {
      return &e;
   }

◆ FreeBuffers()

void LoudnessBase::FreeBuffers ( )

private

Definition at line 240 of file LoudnessBase.cpp.

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

References mTrackBuffer.

Referenced by Process().

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◆ GetDescription()

TranslatableString LoudnessBase::GetDescription ( ) const

overridevirtual

Implements ComponentInterface.

Definition at line 51 of file LoudnessBase.cpp.

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

References XO().

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◆ GetSymbol()

ComponentInterfaceSymbol LoudnessBase::GetSymbol ( ) const

overridevirtual

Implements ComponentInterface.

Definition at line 46 of file LoudnessBase.cpp.

{
   return Symbol;
}

References Symbol.

◆ GetTrackRMS()

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

staticprivate

Definition at line 246 of file LoudnessBase.cpp.

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

References WaveChannelUtilities::GetRMS().

Referenced by Process().

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◆ GetType()

EffectType LoudnessBase::GetType ( ) const

overridevirtual

Type determines how it behaves.

Implements EffectDefinitionInterface.

Definition at line 63 of file LoudnessBase.cpp.

{
   return EffectTypeProcess;
}

References EffectTypeProcess.

Referenced by Process().

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◆ LoadBufferBlock()

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

private

Definition at line 314 of file LoudnessBase.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 LoudnessBase::ManualPage ( ) const

overridevirtual

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

Reimplemented from EffectDefinitionInterface.

Definition at line 56 of file LoudnessBase.cpp.

{
   return L"Loudness_Normalization";
}

◆ Parameters()

const EffectParameterMethods & LoudnessBase::Parameters ( ) const

overrideprotectedvirtual

Reimplemented from Effect.

Definition at line 26 of file LoudnessBase.cpp.

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

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

Referenced by LoudnessBase().

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◆ Process()

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

overridevirtual

Implements StatefulEffectBase.

Definition at line 70 of file LoudnessBase.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, GetType(), { { 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
      {
         // processOne captured nChannels which is 2 and is passed to
         // LoadBufferBlock, StoreBufferBlock which find the track from the
         // channel and iterate channels
         if (!(bGoodResult = processOne(**pTrack->Channels().begin())))
            break;
      }
   }
done:
 
   if (bGoodResult)
      outputs.Commit();
 
   FreeBuffers();
   return bGoodResult;
}

References AllocBuffers(), DB_TO_LINEAR, FreeBuffers(), GetTrackRMS(), GetType(), 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 LoudnessBase::ProcessBufferBlock ( float mult )

private

Definition at line 351 of file LoudnessBase.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 LoudnessBase::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 261 of file LoudnessBase.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(), details::end(), WaveChannel::GetBestBlockSize(), limitSampleBufferSize(), LoadBufferBlock(), mTrackBufferCapacity, mTrackLen, ProcessBufferBlock(), StoreBufferBlock(), and WideSampleSequence::TimeToLongSamples().

Referenced by Process().

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◆ StoreBufferBlock()

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

private

Definition at line 365 of file LoudnessBase.cpp.

{
   size_t idx = 0;
   const auto setOne = [&](WaveChannel& channel) {
      // Copy the newly-changed samples back onto the track.
      return channel.SetFloats(mTrackBuffer[idx].get(), 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(), WaveChannel::GetTrack(), and mTrackBuffer.

Referenced by ProcessOne().

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◆ UpdateProgress()

bool LoudnessBase::UpdateProgress ( )

Definition at line 388 of file LoudnessBase.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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Member Data Documentation

◆ DualMono

constexpr EffectParameter LoudnessBase::DualMono

staticconstexprprotected

Initial value:

{
      &LoudnessBase::mDualMono, L"DualMono", true, false, true, 1
   }

Definition at line 101 of file LoudnessBase.h.

Referenced by Parameters().

◆ LUFSLevel

constexpr EffectParameter LoudnessBase::LUFSLevel

staticconstexprprotected

Initial value:

{
      &LoudnessBase::mLUFSLevel, L"LUFSLevel", -23.0, -145.0, 0.0, 1
   }

Definition at line 95 of file LoudnessBase.h.

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

◆ mCurRate

double LoudnessBase::mCurRate

protected

Definition at line 82 of file LoudnessBase.h.

Referenced by Process().

◆ mDualMono

bool LoudnessBase::mDualMono

protected

Definition at line 75 of file LoudnessBase.h.

Referenced by EffectLoudness::PopulateOrExchange(), and Process().

◆ mLUFSLevel

double LoudnessBase::mLUFSLevel

protected

Definition at line 73 of file LoudnessBase.h.

Referenced by EffectLoudness::PopulateOrExchange(), and Process().

◆ mNormalizeTo

int LoudnessBase::mNormalizeTo

protected

Definition at line 76 of file LoudnessBase.h.

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

◆ mProcStereo

bool LoudnessBase::mProcStereo

protected

Definition at line 88 of file LoudnessBase.h.

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

◆ mProgressMsg

TranslatableString LoudnessBase::mProgressMsg

protected

Definition at line 80 of file LoudnessBase.h.

Referenced by Process(), and UpdateProgress().

◆ mProgressVal

double LoudnessBase::mProgressVal

protected

Definition at line 78 of file LoudnessBase.h.

Referenced by Process(), and UpdateProgress().

◆ mRMSLevel

double LoudnessBase::mRMSLevel

protected

Definition at line 74 of file LoudnessBase.h.

Referenced by EffectLoudness::PopulateOrExchange(), and Process().

◆ mSteps

int LoudnessBase::mSteps

protected

Definition at line 79 of file LoudnessBase.h.

Referenced by Process(), and UpdateProgress().

◆ mStereoInd

bool LoudnessBase::mStereoInd

protected

Definition at line 72 of file LoudnessBase.h.

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

◆ mTrackBuffer

Floats LoudnessBase::mTrackBuffer[2]

protected

Definition at line 84 of file LoudnessBase.h.

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

◆ mTrackBufferCapacity

size_t LoudnessBase::mTrackBufferCapacity

protected

Definition at line 87 of file LoudnessBase.h.

Referenced by AllocBuffers(), and ProcessOne().

◆ mTrackBufferLen

size_t LoudnessBase::mTrackBufferLen

protected

Definition at line 86 of file LoudnessBase.h.

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

◆ mTrackLen

double LoudnessBase::mTrackLen

protected

Definition at line 81 of file LoudnessBase.h.

Referenced by ProcessOne(), and UpdateProgress().

◆ NormalizeTo

constexpr EffectParameter LoudnessBase::NormalizeTo

staticconstexprprotected

Initial value:

{ &LoudnessBase::mNormalizeTo,
                                                  L"NormalizeTo",
                                                  (int)kLoudness,
                                                  0,
                                                  nAlgos - 1,
                                                  1 }

Definition at line 104 of file LoudnessBase.h.

Referenced by Parameters().

◆ RMSLevel

constexpr EffectParameter LoudnessBase::RMSLevel

staticconstexprprotected

Initial value:

{
      &LoudnessBase::mRMSLevel, L"RMSLevel", -20.0, -145.0, 0.0, 1
   }

Definition at line 98 of file LoudnessBase.h.

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

◆ StereoInd

constexpr EffectParameter LoudnessBase::StereoInd

staticconstexprprotected

Initial value:

{
      &LoudnessBase::mStereoInd, L"StereoIndependent", false, false, true, 1
   }

Definition at line 92 of file LoudnessBase.h.

Referenced by Parameters().

◆ Symbol

const ComponentInterfaceSymbol LoudnessBase::Symbol

static

Initial value:

{ XO(

"Loudness Normalization") }

Definition at line 34 of file LoudnessBase.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

Protected Member Functions

Protected Attributes

Static Protected Attributes

Private Member Functions

Static Private Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ kNormalizeTargets

Constructor & Destructor Documentation

◆ LoudnessBase()

◆ ~LoudnessBase()

Member Function Documentation

◆ AllocBuffers()

◆ AnalyseBufferBlock()

◆ FetchParameters()

◆ FreeBuffers()

◆ GetDescription()

◆ GetSymbol()

◆ GetTrackRMS()

◆ GetType()

◆ LoadBufferBlock()

◆ ManualPage()

◆ Parameters()

◆ Process()

◆ ProcessBufferBlock()

◆ ProcessOne()

◆ StoreBufferBlock()

◆ UpdateProgress()

Member Data Documentation

◆ DualMono

◆ LUFSLevel

◆ mCurRate

◆ mDualMono

◆ mLUFSLevel

◆ mNormalizeTo

◆ mProcStereo

◆ mProgressMsg

◆ mProgressVal

◆ mRMSLevel

◆ mSteps

◆ mStereoInd

◆ mTrackBuffer

◆ mTrackBufferCapacity

◆ mTrackBufferLen

◆ mTrackLen

◆ NormalizeTo

◆ RMSLevel

◆ StereoInd

◆ Symbol