Truncate Silence automatically reduces the length of passages where the volume is below a set threshold level. More...

#include <TruncSilence.h>

Inheritance diagram for EffectTruncSilence:

Collaboration diagram for EffectTruncSilence:

Public Member Functions
	EffectTruncSilence ()

virtual	~EffectTruncSilence ()

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

double	CalcPreviewInputLength (const EffectSettings &settings, double previewLength) const override

bool	Analyze (RegionList &silenceList, RegionList &trackSilences, const WaveTrack &wt, sampleCount silentFrame, sampleCount index, int whichTrack, double inputLength=nullptr, double minInputLength=nullptr) const

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

bool	NeedsDither () const 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

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)

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 EffectTruncSilence *	FetchParameters (EffectTruncSilence &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("Truncate Silence") }

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 Types
enum	kActions { kTruncate , kCompress , nActions }

Private Member Functions
void	Intersect (RegionList &dest, const RegionList &src)

void	OnControlChange (wxCommandEvent &evt)

void	UpdateUI ()

bool	ProcessIndependently ()

bool	ProcessAll ()

bool	FindSilences (RegionList &silences, const TrackIterRange< const WaveTrack > &range)

bool	DoRemoval (const RegionList &silences, const TrackIterRange< Track > &range, unsigned iGroup, unsigned nGroups, double &totalCutLen)

const EffectParameterMethods &	Parameters () const override

Private Attributes
wxWeakRef< wxWindow >	mUIParent {}

double	mThresholdDB {}

int	mActionIndex

double	mInitialAllowedSilence

double	mTruncLongestAllowedSilence

double	mSilenceCompressPercent

bool	mbIndependent

size_t	mBlendFrameCount

wxTextCtrl *	mThresholdText

wxChoice *	mActionChoice

wxTextCtrl *	mInitialAllowedSilenceT

wxTextCtrl *	mTruncLongestAllowedSilenceT

wxTextCtrl *	mSilenceCompressPercentT

wxCheckBox *	mIndependent

Static Private Attributes
static const EnumValueSymbol	kActionStrings [nActions]

static constexpr EffectParameter	Threshold

static constexpr EnumParameter	ActIndex

static constexpr EffectParameter	Minimum

static constexpr EffectParameter	Truncate

static constexpr EffectParameter	Compress

static constexpr EffectParameter	Independent

Additional Inherited Members
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 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
double	mF0 {}

double	mF1 {}

wxArrayString	mPresetNames

unsigned	mUIFlags { 0 }

Detailed Description

Truncate Silence automatically reduces the length of passages where the volume is below a set threshold level.

Definition at line 32 of file TruncSilence.h.

Member Enumeration Documentation

◆ kActions

enum EffectTruncSilence::kActions

private

Enumerator
kTruncate
kCompress
nActions

Definition at line 116 of file TruncSilence.h.

   {
      kTruncate,
      kCompress,
      nActions
   };

Constructor & Destructor Documentation

◆ EffectTruncSilence()

EffectTruncSilence::EffectTruncSilence ( )

Definition at line 116 of file TruncSilence.cpp.

{
   Parameters().Reset(*this);
 
   SetLinearEffectFlag(false);
 
   // This used to be changeable via the audacity.cfg/registry.  Doubtful that was
   // ever done.
   //
   // Original comment:
   //
   //   mBlendFrameCount only retrieved from prefs ... not using dialog
   //   Only way to change (for windows) is thru registry
   //   The values should be figured dynamically ... too many frames could be invalid
   mBlendFrameCount = DEF_BlendFrameCount;
}

References DEF_BlendFrameCount.

Referenced by Parameters().

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◆ ~EffectTruncSilence()

EffectTruncSilence::~EffectTruncSilence ( )

virtual

Definition at line 133 of file TruncSilence.cpp.

134{

135}

Member Function Documentation

◆ Analyze()

bool EffectTruncSilence::Analyze	(	RegionList &	silenceList,
		RegionList &	trackSilences,
		const WaveTrack &	wt,
		sampleCount *	silentFrame,
		sampleCount *	index,
		int	whichTrack,
		double *	inputLength = `nullptr`,
		double *	minInputLength = `nullptr`
	)		const

Definition at line 514 of file TruncSilence.cpp.

{
   const auto rate = wt.GetRate();
 
   // Smallest silent region to detect in frames
   auto minSilenceFrames =
      sampleCount(std::max(mInitialAllowedSilence, DEF_MinTruncMs) * rate);
 
   double truncDbSilenceThreshold = DB_TO_LINEAR(mThresholdDB);
   auto blockLen = wt.GetMaxBlockSize();
   auto start = wt.TimeToLongSamples(mT0);
   auto end = wt.TimeToLongSamples(mT1);
   sampleCount outLength = 0;
 
   double previewLength;
   gPrefs->Read(wxT("/AudioIO/EffectsPreviewLen"), &previewLength, 6.0);
   // Minimum required length in samples.
   const sampleCount previewLen(previewLength * rate);
 
   // Keep position in overall silences list for optimization
   RegionList::iterator rit(silenceList.begin());
 
   // Allocate buffers
   Floats buffers[] {
      Floats{ blockLen },
      Floats{ blockLen }
   };
 
   // Loop through current track
   while (*index < end) {
      if (inputLength && ((outLength >= previewLen) ||
         (*index - start > wt.TimeToLongSamples(*minInputLength)))
      ) {
         *inputLength = std::min<double>(*inputLength, *minInputLength);
         if (outLength >= previewLen) {
            *minInputLength = *inputLength;
         }
         return true;
      }
 
      if (!inputLength) {
         // Show progress dialog, test for cancellation
         bool cancelled = TotalProgress(
               detectFrac * (whichTrack +
                             (*index - start).as_double() /
                             (end - start).as_double()) /
                             (double)GetNumWaveTracks());
         if (cancelled)
            return false;
      }
 
      // Optimization: if not in a silent region skip ahead to the next one
 
      double curTime = wt.LongSamplesToTime(*index);
      for ( ; rit != silenceList.end(); ++rit) {
         // Find the first silent region ending after current time
         if (rit->end >= curTime) {
            break;
         }
      }
 
      if (rit == silenceList.end()) {
         // No more regions -- no need to process the rest of the track
         if (inputLength) {
            // Add available samples up to previewLength.
            auto remainingTrackSamples =
               wt.TimeToLongSamples(wt.GetEndTime()) - *index;
            auto requiredTrackSamples = previewLen - outLength;
            outLength += (remainingTrackSamples > requiredTrackSamples)
               ? requiredTrackSamples
               : remainingTrackSamples;
         }
 
         break;
      }
      else if (rit->start > curTime) {
         // End current silent region, skip ahead
         if (*silentFrame >= minSilenceFrames)  {
            trackSilences.push_back(Region(
               wt.LongSamplesToTime(*index - *silentFrame),
               wt.LongSamplesToTime(*index)
            ));
         }
         *silentFrame = 0;
         auto newIndex = wt.TimeToLongSamples(rit->start);
         if (inputLength) {
            auto requiredTrackSamples = previewLen - outLength;
            // Add non-silent sample to outLength
            outLength += ((newIndex - *index) > requiredTrackSamples)
               ? requiredTrackSamples
               : newIndex - *index;
         }
 
         *index = newIndex;
      }
      // End of optimization
 
      // Limit size of current block if we've reached the end
      auto count = limitSampleBufferSize( blockLen, end - *index );
 
      // Fill buffers
      size_t iChannel = 0;
      for (const auto pChannel : wt.Channels())
         pChannel->GetFloats(buffers[iChannel++].get(), *index, count);
 
      // Look for silenceList in current block
      for (decltype(count) i = 0; i < count; ++i) {
         if (inputLength && ((outLength >= previewLen) ||
            (outLength > wt.TimeToLongSamples(*minInputLength)))
         ) {
            *inputLength =
               wt.LongSamplesToTime(*index + i) - wt.LongSamplesToTime(start);
            break;
         }
 
         const bool silent = std::all_of(buffers, buffers + iChannel,
         [&](const Floats &buffer){
            return fabs(buffer[i]) < truncDbSilenceThreshold;
         });
         if (silent)
            (*silentFrame)++;
         else {
            sampleCount allowed = 0;
            if (*silentFrame >= minSilenceFrames) {
               if (inputLength) {
                  switch (mActionIndex) {
                     case kTruncate:
                        outLength +=
                           wt.TimeToLongSamples(mTruncLongestAllowedSilence);
                        break;
                     case kCompress:
                        allowed =
                           wt.TimeToLongSamples(mInitialAllowedSilence);
                        outLength += sampleCount(
                           allowed.as_double() +
                              (*silentFrame - allowed).as_double()
                                 * mSilenceCompressPercent / 100.0
                        );
                        break;
                     // default: // Not currently used.
                  }
               }
 
               // Record the silent region
               trackSilences.push_back(Region(
                  wt.LongSamplesToTime(*index + i - *silentFrame),
                  wt.LongSamplesToTime(*index + i)
               ));
            }
            else if (inputLength) {   // included as part of non-silence
               outLength += *silentFrame;
            }
            *silentFrame = 0;
            if (inputLength) {
                ++outLength;   // Add non-silent sample to outLength
            }
         }
      }
      // Next block
      *index += count;
   }
 
   if (inputLength) {
      *inputLength = std::min<double>(*inputLength, *minInputLength);
      if (outLength >= previewLen) {
         *minInputLength = *inputLength;
      }
   }
 
   return true;
}

References sampleCount::as_double(), WaveTrack::Channels(), DB_TO_LINEAR, DEF_MinTruncMs, detectFrac, details::end(), WaveTrack::GetEndTime(), WaveTrack::GetMaxBlockSize(), Effect::GetNumWaveTracks(), WaveTrack::GetRate(), gPrefs, anonymous_namespace{StretchingSequenceIntegrationTest.cpp}::iChannel, kCompress, kTruncate, limitSampleBufferSize(), WideSampleSequence::LongSamplesToTime(), mActionIndex, mInitialAllowedSilence, mSilenceCompressPercent, EffectBase::mT0, EffectBase::mT1, mThresholdDB, mTruncLongestAllowedSilence, audacity::BasicSettings::Read(), WideSampleSequence::TimeToLongSamples(), Effect::TotalProgress(), and wxT().

Referenced by CalcPreviewInputLength(), and FindSilences().

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◆ CalcPreviewInputLength()

double EffectTruncSilence::CalcPreviewInputLength	(	const EffectSettings &	settings,
		double	previewLength
	)		const

overridevirtual

Implements EffectBase.

Definition at line 204 of file TruncSilence.cpp.

{
   double inputLength = mT1 - mT0;
   double minInputLength = inputLength;
 
   // Master list of silent regions
   RegionList silences;
 
   // Start with the whole selection silent
   silences.push_back(Region(mT0, mT1));
 
   int whichTrack = 0;
 
   for (auto wt : inputTracks()->Selected<const WaveTrack>()) {
      RegionList trackSilences;
 
      auto index = wt->TimeToLongSamples(mT0);
      sampleCount silentFrame = 0; // length of the current silence
 
      Analyze(silences, trackSilences, *wt, &silentFrame, &index, whichTrack,
         &inputLength, &minInputLength);
 
      whichTrack += wt->NChannels();
   }
   return inputLength;
}

References Analyze(), EffectBase::inputTracks(), EffectBase::mT0, and EffectBase::mT1.

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◆ DoRemoval()

bool EffectTruncSilence::DoRemoval	(	const RegionList &	silences,
		const TrackIterRange< Track > &	range,
		unsigned	iGroup,
		unsigned	nGroups,
		double &	totalCutLen
	)

private

Definition at line 381 of file TruncSilence.cpp.

{
   //
   // Now remove the silent regions from all selected / sync-lock selected tracks.
   //
 
   // Loop over detected regions in reverse (so cuts don't change time values
   // down the line)
   int whichReg = 0;
   RegionList::const_reverse_iterator rit;
   for (rit = silences.rbegin(); rit != silences.rend(); ++rit)
   {
      const Region &region = *rit;
      const Region *const r = &region;
 
      // Progress dialog and cancellation. Do additional cleanup before return.
      const double frac = detectFrac +
         (1 - detectFrac) * (iGroup + whichReg / double(silences.size())) / nGroups;
      if (TotalProgress(frac))
         return false;
 
      // Intersection may create regions smaller than allowed; ignore them.
      // Allow one nanosecond extra for consistent results with exact milliseconds of allowed silence.
      if ((r->end - r->start) < (mInitialAllowedSilence - 0.000000001))
         continue;
 
      // Find NEW silence length as requested
      double inLength = r->end - r->start;
      double outLength;
 
      switch (mActionIndex)
      {
      case kTruncate:
         outLength = std::min(mTruncLongestAllowedSilence, inLength);
         break;
      case kCompress:
         outLength = mInitialAllowedSilence +
                        (inLength - mInitialAllowedSilence) * mSilenceCompressPercent / 100.0;
         break;
      default: // Not currently used.
         outLength = std::min(mInitialAllowedSilence +
                              (inLength - mInitialAllowedSilence) * mSilenceCompressPercent / 100.0,
                           mTruncLongestAllowedSilence);
      }
 
      const double cutLen = std::max(0.0, inLength - outLength);
      // Don't waste time cutting nothing.
      if( cutLen == 0.0 )
         continue;
 
      totalCutLen += cutLen;
 
      bool success = true;
      double cutStart = (r->start + r->end - cutLen) / 2;
      double cutEnd = cutStart + cutLen;
      (range
         + &SyncLock::IsSelectedOrSyncLockSelectedP
         - [&](const Track *pTrack) { return
           // Don't waste time past the end of a track
           pTrack->GetEndTime() < r->start;
         }
      ).VisitWhile(success,
         [&](WaveTrack &wt) {
            // In WaveTracks, clear with a cross-fade
            auto blendFrames = mBlendFrameCount;
            // Round start/end times to frame boundaries
            cutStart = wt.SnapToSample(cutStart);
            cutEnd = wt.SnapToSample(cutEnd);
 
            // Make sure the cross-fade does not affect non-silent frames
            if (wt.LongSamplesToTime(blendFrames) > inLength) {
               // Result is not more than blendFrames:
               blendFrames = wt.TimeToLongSamples(inLength).as_size_t();
            }
 
            // Perform cross-fade in memory
            struct Buffers {
               Buffers(size_t size)
                  : buf1{ size }, buf2 { size }
               {}
               Floats buf1, buf2;
            };
            Buffers buffers[2]{ blendFrames, blendFrames };
            auto t1 = wt.TimeToLongSamples(cutStart) - blendFrames / 2;
            auto t2 = wt.TimeToLongSamples(cutEnd) - blendFrames / 2;
 
            size_t iChannel = 0;
            for (const auto pChannel : wt.Channels()) {
               auto &buffer = buffers[iChannel];
               pChannel->GetFloats(buffer.buf1.get(), t1, blendFrames);
               pChannel->GetFloats(buffer.buf2.get(), t2, blendFrames);
 
               for (decltype(blendFrames) i = 0; i < blendFrames; ++i) {
                  buffer.buf1[i] =
                     ((blendFrames - i) * buffer.buf1[i] + i * buffer.buf2[i]) /
                        (double)blendFrames;
               }
               ++iChannel;
            }
 
            wt.Clear(cutStart, cutEnd);
 
            iChannel = 0;
            for (const auto pChannel : wt.Channels()) {
               // Write cross-faded data
               auto &buffer = buffers[iChannel];
               success = success &&
               pChannel->SetFloats(buffer.buf1.get(), t1,
                  blendFrames,
                  // This effect mostly shifts samples to remove silences, and
                  // does only a little bit of floating point calculations to
                  // cross-fade the splices, over a 100 sample interval by default.
                  // Don't dither.
                  narrowestSampleFormat);
               ++iChannel;
            }
         },
         [&](Track &t) {
            // Non-wave tracks: just do a sync-lock adjust
            t.SyncLockAdjust(cutEnd, cutStart);
         }
      );
      if (!success)
         return false;
      ++whichReg;
   }
 
   return true;
}

References sampleCount::as_size_t(), WaveTrack::Channels(), WaveTrack::Clear(), detectFrac, WaveTrack::Region::end, anonymous_namespace{StretchingSequenceIntegrationTest.cpp}::iChannel, SyncLock::IsSelectedOrSyncLockSelectedP(), kCompress, kTruncate, WideSampleSequence::LongSamplesToTime(), mActionIndex, mBlendFrameCount, min(), mInitialAllowedSilence, mSilenceCompressPercent, mTruncLongestAllowedSilence, narrowestSampleFormat, size, WideSampleSequence::SnapToSample(), WaveTrack::Region::start, WideSampleSequence::TimeToLongSamples(), and Effect::TotalProgress().

Referenced by ProcessAll(), and ProcessIndependently().

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◆ FetchParameters()

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

inlinestatic

Definition at line 36 of file TruncSilence.h.

36{ return &e; }

◆ FindSilences()

bool EffectTruncSilence::FindSilences	(	RegionList &	silences,
		const TrackIterRange< const WaveTrack > &	range
	)

private

Definition at line 334 of file TruncSilence.cpp.

{
   // Start with the whole selection silent
   silences.push_back(Region(mT0, mT1));
 
   // Remove non-silent regions in each track
   int whichTrack = 0;
   for (auto wt : range) {
      // Smallest silent region to detect in frames
      auto minSilenceFrames =
         sampleCount(std::max(mInitialAllowedSilence, DEF_MinTruncMs)
            * wt->GetRate());
 
      //
      // Scan the track for silences
      //
      RegionList trackSilences;
 
      auto index = wt->TimeToLongSamples(mT0);
      sampleCount silentFrame = 0;
 
      // Detect silences
      bool cancelled = !(Analyze(
         silences, trackSilences, *wt, &silentFrame, &index, whichTrack));
 
      // Buffer has been freed, so we're OK to return if cancelled
      if (cancelled)
         return false;
 
      if (silentFrame >= minSilenceFrames)
      {
         // Track ended in silence -- record region
         trackSilences.push_back(Region(
            wt->LongSamplesToTime(index - silentFrame),
            wt->LongSamplesToTime(index)
         ));
      }
 
      // Intersect with the overall silent region list
      Intersect(silences, trackSilences);
      whichTrack++;
   }
 
   return true;
}

References Analyze(), DEF_MinTruncMs, Intersect(), mInitialAllowedSilence, EffectBase::mT0, and EffectBase::mT1.

Referenced by ProcessAll(), and ProcessIndependently().

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◆ GetDescription()

TranslatableString EffectTruncSilence::GetDescription ( ) const

overridevirtual

Implements ComponentInterface.

Definition at line 144 of file TruncSilence.cpp.

{
   return XO("Automatically reduces the length of passages where the volume is below a specified level");
}

References XO().

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◆ GetSymbol()

ComponentInterfaceSymbol EffectTruncSilence::GetSymbol ( ) const

overridevirtual

Implements ComponentInterface.

Definition at line 139 of file TruncSilence.cpp.

{
   return Symbol;
}

References Symbol.

◆ GetType()

EffectType EffectTruncSilence::GetType ( ) const

overridevirtual

Type determines how it behaves.

Implements EffectDefinitionInterface.

Definition at line 156 of file TruncSilence.cpp.

{
   return EffectTypeProcess;
}

References EffectTypeProcess.

Referenced by ProcessAll(), and ProcessIndependently().

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◆ Intersect()

void EffectTruncSilence::Intersect	(	RegionList &	dest,
		const RegionList &	src
	)

private

Definition at line 797 of file TruncSilence.cpp.

{
   RegionList::iterator destIter;
   destIter = dest.begin();
   // Any time we reach the end of the dest list we're finished
   if (destIter == dest.end())
      return;
   RegionList::iterator curDest = destIter;
 
   // Operation: find non-silent regions in src, remove them from dest.
   double nsStart = curDest->start;
   double nsEnd;
   bool lastRun = false; // must run the loop one extra time
 
   RegionList::const_iterator srcIter = src.begin();
 
   // This logic, causing the loop to run once after end of src, must occur
   // each time srcIter is updated
   if (srcIter == src.end())
   {
      lastRun = true;
   }
 
   while (srcIter != src.end() || lastRun)
   {
      // Don't use curSrc unless lastRun is false!
      RegionList::const_iterator curSrc;
 
      if (lastRun)
      {
         // The last non-silent region extends as far as possible
         nsEnd = std::numeric_limits<double>::max();
      }
      else
      {
         curSrc = srcIter;
         nsEnd = curSrc->start;
      }
 
      if (nsEnd > nsStart)
      {
         // Increment through dest until we have a region that could be affected
         while (curDest->end <= nsStart)
         {
            ++destIter;
            if (destIter == dest.end())
            {
               return;
            }
            curDest = destIter;
         }
 
         // Check for splitting dest region in two
         if (nsStart > curDest->start && nsEnd < curDest->end)
         {
            // The second region
            Region r(nsEnd, curDest->end);
 
            // The first region
            curDest->end = nsStart;
 
            // Insert second region after first
            RegionList::iterator nextIt(destIter);
            ++nextIt;
 
            // This should just read: destIter = dest.insert(nextIt, r); but we
            // work around two two wxList::insert() bugs. First, in some
            // versions it returns the wrong value. Second, in some versions,
            // it crashes when you insert at list end.
            if (nextIt == dest.end())
               dest.push_back(r);
            else
               dest.insert(nextIt, r);
            ++destIter;          // (now points at the newly-inserted region)
 
            curDest = destIter;
         }
 
         // Check for truncating the end of dest region
         if (nsStart > curDest->start && nsStart < curDest->end &&
               nsEnd >= curDest->end)
         {
            curDest->end = nsStart;
 
            ++destIter;
            if (destIter == dest.end())
            {
               return;
            }
            curDest = destIter;
         }
 
         // Check for all dest regions that need to be removed completely
         while (nsStart <= curDest->start && nsEnd >= curDest->end)
         {
            destIter = dest.erase(destIter);
            if (destIter == dest.end())
            {
               return;
            }
            curDest = destIter;
         }
 
         // Check for truncating the beginning of dest region
         if (nsStart <= curDest->start &&
               nsEnd > curDest->start && nsEnd < curDest->end)
         {
            curDest->start = nsEnd;
         }
      }
 
      if (lastRun)
      {
         // done
         lastRun = false;
      }
      else
      {
         // Next non-silent region starts at the end of this silent region
         nsStart = curSrc->end;
         ++srcIter;
         if (srcIter == src.end())
         {
            lastRun = true;
         }
      }
   }
}

References details::end().

Referenced by FindSilences().

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◆ LoadSettings()

bool EffectTruncSilence::LoadSettings	(	const CommandParameters &	parms,
		EffectSettings &	settings
	)		const

overridevirtual

Restore settings from keys and values.

Returns: true on success

Implements EffectSettingsManager.

Definition at line 161 of file TruncSilence.cpp.

{
   Effect::LoadSettings(parms, settings);
 
   // A bit of special treatment for two parameters
 
   // This control migrated from a choice to a text box in version 2.3.0
   double myThreshold {};
   bool newParams = [&] {
      double temp;
      if (!parms.ReadAndVerify(Threshold.key,
         &temp, Threshold.def, Threshold.min, Threshold.max))
         return false;
      myThreshold = temp;
      return true;
   } ();
 
   if ( !newParams ) {
      int temp;
      // Use legacy param:
      if (!parms.ReadAndVerify(L"Db", &temp, 0,
         Enums::DbChoices, Enums::NumDbChoices))
         return false;
      myThreshold = enumToDB( temp );
   }
 
   {
      int temp;
      if (!parms.ReadAndVerify( ActIndex.key, &temp, ActIndex.def,
         kActionStrings, nActions, kObsoleteActions, nObsoleteActions))
         return false;
 
      // TODO:  fix this when settings are really externalized
      const_cast<int&>(mActionIndex) = temp;
   }
   // TODO:  fix this when settings are really externalized
   const_cast<double&>(mThresholdDB) = myThreshold;
   return true;
}

References ActIndex, Enums::DbChoices, EffectParameter< Structure, Member, Type, Value >::def, enumToDB(), kActionStrings, EffectParameter< Structure, Member, Type, Value >::key, kObsoleteActions, Effect::LoadSettings(), mActionIndex, EffectParameter< Structure, Member, Type, Value >::max, EffectParameter< Structure, Member, Type, Value >::min, mThresholdDB, nActions, nObsoleteActions, Enums::NumDbChoices, CommandParameters::ReadAndVerify(), settings(), and Threshold.

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◆ ManualPage()

ManualPageID EffectTruncSilence::ManualPage ( ) const

overridevirtual

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

Reimplemented from EffectDefinitionInterface.

Definition at line 149 of file TruncSilence.cpp.

{
   return L"Truncate_Silence";
}

◆ NeedsDither()

bool EffectTruncSilence::NeedsDither ( ) const

overridevirtual

Reimplemented from StatefulEffectBase.

Definition at line 971 of file TruncSilence.cpp.

{
   return false;
}

◆ OnControlChange()

void EffectTruncSilence::OnControlChange ( wxCommandEvent & evt )

private

Definition at line 958 of file TruncSilence.cpp.

{
   mActionChoice->GetValidator()->TransferFromWindow();
 
   UpdateUI();
 
   if (!EffectEditor::EnableApply(
      mUIParent, mUIParent->TransferDataFromWindow()))
   {
      return;
   }
}

References EffectEditor::EnableApply(), mActionChoice, mUIParent, and UpdateUI().

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◆ Parameters()

const EffectParameterMethods & EffectTruncSilence::Parameters ( ) const

overrideprivatevirtual

Reimplemented from Effect.

Definition at line 89 of file TruncSilence.cpp.

{
   static CapturedParameters<EffectTruncSilence,
      Threshold, ActIndex, Minimum, Truncate, Compress, Independent
   > parameters;
   return parameters;
}

References ActIndex, Compress, EffectTruncSilence(), Independent, Minimum, Threshold, and Truncate.

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◆ PopulateOrExchange()

std::unique_ptr< EffectEditor > EffectTruncSilence::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 690 of file TruncSilence.cpp.

{
   mUIParent = S.GetParent();
   wxASSERT(nActions == WXSIZEOF(kActionStrings));
 
   S.AddSpace(0, 5);
 
   S.StartStatic(XO("Detect Silence"));
   {
      S.StartMultiColumn(3, wxALIGN_CENTER_HORIZONTAL);
      {
         // Threshold
         mThresholdText = S
            .Validator<FloatingPointValidator<double>>(
               3, &mThresholdDB, NumValidatorStyle::NO_TRAILING_ZEROES,
               Threshold.min, Threshold.max )
            .NameSuffix(XO("db"))
            .AddTextBox(XXO("&Threshold:"), wxT(""), 0);
         S.AddUnits(XO("dB"));
 
         // Ignored silence
         mInitialAllowedSilenceT = S.Validator<FloatingPointValidator<double>>(
               3, &mInitialAllowedSilence,
               NumValidatorStyle::NO_TRAILING_ZEROES,
               Minimum.min, Minimum.max)
            .NameSuffix(XO("seconds"))
            .AddTextBox(XXO("&Duration:"), wxT(""), 12);
         S.AddUnits(XO("seconds"));
      }
      S.EndMultiColumn();
   }
   S.EndStatic();
 
   S.StartStatic(XO("Action"));
   {
      S.StartHorizontalLay();
      {
         // Action choices
         auto actionChoices = Msgids( kActionStrings, nActions );
         mActionChoice = S
            .Validator<wxGenericValidator>(&mActionIndex)
            .MinSize( { -1, -1 } )
            .AddChoice( {}, actionChoices );
      }
      S.EndHorizontalLay();
      S.StartMultiColumn(3, wxALIGN_CENTER_HORIZONTAL);
      {
         // Truncation / Compression factor
 
         mTruncLongestAllowedSilenceT = S.Validator<FloatingPointValidator<double>>(
               3, &mTruncLongestAllowedSilence,
               NumValidatorStyle::NO_TRAILING_ZEROES,
               Truncate.min, Truncate.max )
            .NameSuffix(XO("seconds"))
            .AddTextBox(XXO("Tr&uncate to:"), wxT(""), 12);
         S.AddUnits(XO("seconds"));
 
         mSilenceCompressPercentT = S.Validator<FloatingPointValidator<double>>(
               3, &mSilenceCompressPercent,
               NumValidatorStyle::NO_TRAILING_ZEROES,
               Compress.min, Compress.max )
            .NameSuffix(XO("%"))
            .AddTextBox(XXO("C&ompress to:"), wxT(""), 12);
         S.AddUnits(XO("%"));
      }
      S.EndMultiColumn();
 
      S.StartMultiColumn(2, wxALIGN_CENTER_HORIZONTAL);
      {
         mIndependent = S.AddCheckBox(XXO("Trunc&ate tracks independently"),
            mbIndependent);
      }
      S.EndMultiColumn();
   }
   S.EndStatic();
 
   UpdateUI();
   return nullptr;
}

References Compress, kActionStrings, mActionChoice, mActionIndex, EffectParameter< Structure, Member, Type, Value >::max, mbIndependent, EffectParameter< Structure, Member, Type, Value >::min, mIndependent, Minimum, mInitialAllowedSilence, mInitialAllowedSilenceT, Msgids(), mSilenceCompressPercent, mSilenceCompressPercentT, mThresholdDB, mThresholdText, mTruncLongestAllowedSilence, mTruncLongestAllowedSilenceT, mUIParent, nActions, S, Threshold, Truncate, UpdateUI(), wxT(), XO(), and XXO().

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◆ Process()

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

overridevirtual

Implements StatefulEffectBase.

Definition at line 233 of file TruncSilence.cpp.

{
   const bool success =
      mbIndependent
      ? ProcessIndependently()
      : ProcessAll();
 
   return success;
}

References mbIndependent, ProcessAll(), and ProcessIndependently().

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◆ ProcessAll()

bool EffectTruncSilence::ProcessAll ( )

private

Definition at line 309 of file TruncSilence.cpp.

{
   // Copy tracks
   EffectOutputTracks outputs {
      *mTracks, GetType(), { { mT0, mT1 } }, true, true
   };
 
   // Master list of silent regions.
   // This list should always be kept in order.
   RegionList silences;
 
   if (FindSilences(silences, outputs.Get().Selected<const WaveTrack>()))
   {
      auto trackRange = outputs.Get().Any();
      double totalCutLen = 0.0;
      if (DoRemoval(silences, trackRange, 0, 1, totalCutLen)) {
         mT1 -= totalCutLen;
         outputs.Commit();
         return true;
      }
   }
 
   return false;
}

References DoRemoval(), FindSilences(), GetType(), EffectBase::mT0, EffectBase::mT1, and EffectBase::mTracks.

Referenced by Process().

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◆ ProcessIndependently()

bool EffectTruncSilence::ProcessIndependently ( )

private

Definition at line 243 of file TruncSilence.cpp.

{
   unsigned nGroups = 0;
 
   const bool syncLock = SyncLockState::Get(*FindProject()).IsSyncLocked();
 
   // Check if it's permissible
   {
      for (auto track : inputTracks()->Selected<const WaveTrack>()) {
         if (syncLock) {
            auto otherTracks =
               SyncLock::Group(*track).Filter<const WaveTrack>()
                  + &Track::IsSelected
                  - [&](const Track *pTrack){ return pTrack == track; };
            if (otherTracks) {
               EffectUIServices::DoMessageBox(*this,
                  XO(
"When truncating independently, there may only be one selected audio track in each Sync-Locked Track Group.") );
               return false;
            }
         }
 
         ++nGroups;
      }
   }
 
   if (nGroups == 0)
      // nothing to do
      return true;
 
   // Now do the work
 
   // Copy tracks
   EffectOutputTracks outputs {
      *mTracks, GetType(), { { mT0, mT1 } }, true, true
   };
   double newT1 = 0.0;
 
   {
      unsigned iGroup = 0;
      for (auto track : outputs.Get().Selected<WaveTrack>()) {
         RegionList silences;
         if (!FindSilences(silences,
            TrackList::SingletonRange(&as_const(*track))))
            return false;
         // Treat tracks in the sync lock group only
         Track *groupFirst, *groupLast;
         auto range = syncLock
            ? SyncLock::Group(*track)
            : TrackList::SingletonRange<Track>(track);
         double totalCutLen = 0.0;
         if (!DoRemoval(silences, range, iGroup, nGroups, totalCutLen))
            return false;
         newT1 = std::max(newT1, mT1 - totalCutLen);
 
         ++iGroup;
      }
   }
 
   mT1 = newT1;
 
   outputs.Commit();
 
   return true;
}

References EffectUIServices::DoMessageBox(), DoRemoval(), EffectBase::FindProject(), FindSilences(), SyncLockState::Get(), GetType(), SyncLock::Group(), EffectBase::inputTracks(), Track::IsSelected(), SyncLockState::IsSyncLocked(), EffectBase::mT0, EffectBase::mT1, EffectBase::mTracks, TrackList::SingletonRange(), and XO().

Referenced by Process().

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◆ TransferDataFromWindow()

bool EffectTruncSilence::TransferDataFromWindow ( EffectSettings & settings )

overridevirtual

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

Reimplemented from StatefulEffectUIServices.

Definition at line 782 of file TruncSilence.cpp.

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

References mbIndependent, mIndependent, and mUIParent.

◆ TransferDataToWindow()

bool EffectTruncSilence::TransferDataToWindow ( const EffectSettings & settings )

overridevirtual

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

Reimplemented from StatefulEffectUIServices.

Definition at line 772 of file TruncSilence.cpp.

{
   if (!mUIParent->TransferDataToWindow())
   {
      return false;
   }
 
   return true;
}

References mUIParent.

◆ UpdateUI()

void EffectTruncSilence::UpdateUI ( )

private

Definition at line 944 of file TruncSilence.cpp.

{
   switch (mActionIndex)
   {
   case kTruncate:
      mTruncLongestAllowedSilenceT->Enable(true);
      mSilenceCompressPercentT->Enable(false);
      break;
   case kCompress:
      mTruncLongestAllowedSilenceT->Enable(false);
      mSilenceCompressPercentT->Enable(true);
   }
}

References kCompress, kTruncate, mActionIndex, mSilenceCompressPercentT, and mTruncLongestAllowedSilenceT.

Referenced by OnControlChange(), and PopulateOrExchange().

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Member Data Documentation

◆ ActIndex

constexpr EnumParameter EffectTruncSilence::ActIndex

staticconstexprprivate

Initial value:

{ &EffectTruncSilence::mActionIndex,

L"Action", (int)kTruncate, 0, nActions - 1, 1, kActionStrings, nActions }

Definition at line 127 of file TruncSilence.h.

Referenced by LoadSettings(), and Parameters().

◆ Compress

constexpr EffectParameter EffectTruncSilence::Compress

staticconstexprprivate

Initial value:

{ &EffectTruncSilence::mSilenceCompressPercent,

L"Compress", 50.0, 0.0, 99.9, 1 }

Definition at line 133 of file TruncSilence.h.

Referenced by Parameters(), and PopulateOrExchange().

◆ Independent

constexpr EffectParameter EffectTruncSilence::Independent

staticconstexprprivate

Initial value:

{ &EffectTruncSilence::mbIndependent,

L"Independent", false, false, true, 1 }

Definition at line 135 of file TruncSilence.h.

Referenced by Parameters().

◆ kActionStrings

const EnumValueSymbol EffectTruncSilence::kActionStrings

staticprivate

Initial value:

=
{
   { XO("Truncate Detected Silence") },
   { XO("Compress Excess Silence") }
}

Definition at line 123 of file TruncSilence.h.

Referenced by LoadSettings(), and PopulateOrExchange().

◆ mActionChoice

wxChoice* EffectTruncSilence::mActionChoice

private

Definition at line 107 of file TruncSilence.h.

Referenced by OnControlChange(), and PopulateOrExchange().

◆ mActionIndex

int EffectTruncSilence::mActionIndex

private

Definition at line 98 of file TruncSilence.h.

Referenced by Analyze(), DoRemoval(), LoadSettings(), PopulateOrExchange(), and UpdateUI().

◆ mbIndependent

bool EffectTruncSilence::mbIndependent

private

Definition at line 102 of file TruncSilence.h.

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

◆ mBlendFrameCount

size_t EffectTruncSilence::mBlendFrameCount

private

Definition at line 104 of file TruncSilence.h.

Referenced by DoRemoval().

◆ mIndependent

wxCheckBox* EffectTruncSilence::mIndependent

private

Definition at line 111 of file TruncSilence.h.

Referenced by PopulateOrExchange(), and TransferDataFromWindow().

◆ Minimum

constexpr EffectParameter EffectTruncSilence::Minimum

staticconstexprprivate

Initial value:

{ &EffectTruncSilence::mInitialAllowedSilence,

L"Minimum", 0.5, 0.001, 10000.0, 1 }

Definition at line 129 of file TruncSilence.h.

Referenced by Parameters(), and PopulateOrExchange().

◆ mInitialAllowedSilence

double EffectTruncSilence::mInitialAllowedSilence

private

Definition at line 99 of file TruncSilence.h.

Referenced by Analyze(), DoRemoval(), FindSilences(), and PopulateOrExchange().

◆ mInitialAllowedSilenceT

wxTextCtrl* EffectTruncSilence::mInitialAllowedSilenceT

private

Definition at line 108 of file TruncSilence.h.

Referenced by PopulateOrExchange().

◆ mSilenceCompressPercent

double EffectTruncSilence::mSilenceCompressPercent

private

Definition at line 101 of file TruncSilence.h.

Referenced by Analyze(), DoRemoval(), and PopulateOrExchange().

◆ mSilenceCompressPercentT

wxTextCtrl* EffectTruncSilence::mSilenceCompressPercentT

private

Definition at line 110 of file TruncSilence.h.

Referenced by PopulateOrExchange(), and UpdateUI().

◆ mThresholdDB

double EffectTruncSilence::mThresholdDB {}

private

Definition at line 97 of file TruncSilence.h.

Referenced by Analyze(), LoadSettings(), and PopulateOrExchange().

◆ mThresholdText

wxTextCtrl* EffectTruncSilence::mThresholdText

private

Definition at line 106 of file TruncSilence.h.

Referenced by PopulateOrExchange().

◆ mTruncLongestAllowedSilence

double EffectTruncSilence::mTruncLongestAllowedSilence

private

Definition at line 100 of file TruncSilence.h.

Referenced by Analyze(), DoRemoval(), and PopulateOrExchange().

◆ mTruncLongestAllowedSilenceT

wxTextCtrl* EffectTruncSilence::mTruncLongestAllowedSilenceT

private

Definition at line 109 of file TruncSilence.h.

Referenced by PopulateOrExchange(), and UpdateUI().

◆ mUIParent

wxWeakRef<wxWindow> EffectTruncSilence::mUIParent {}

private

Definition at line 95 of file TruncSilence.h.

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

◆ Symbol

const ComponentInterfaceSymbol EffectTruncSilence::Symbol { XO("Truncate Silence") }

static

Definition at line 37 of file TruncSilence.h.

Referenced by GetSymbol().

◆ Threshold

constexpr EffectParameter EffectTruncSilence::Threshold

staticconstexprprivate

Initial value:

{ &EffectTruncSilence::mThresholdDB,

L"Threshold", -20.0, -80.0, -20.0, 1 }

Definition at line 125 of file TruncSilence.h.

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

◆ Truncate

constexpr EffectParameter EffectTruncSilence::Truncate

staticconstexprprivate

Initial value:

{ &EffectTruncSilence::mTruncLongestAllowedSilence,

L"Truncate", 0.5, 0.0, 10000.0, 1 }

Definition at line 131 of file TruncSilence.h.

Referenced by Parameters(), and PopulateOrExchange().

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

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Types

Private Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ kActions

Constructor & Destructor Documentation

◆ EffectTruncSilence()

◆ ~EffectTruncSilence()

Member Function Documentation

◆ Analyze()

◆ CalcPreviewInputLength()

◆ DoRemoval()

◆ FetchParameters()

◆ FindSilences()

◆ GetDescription()

◆ GetSymbol()

◆ GetType()

◆ Intersect()

◆ LoadSettings()

◆ ManualPage()

◆ NeedsDither()

◆ OnControlChange()

◆ Parameters()

◆ PopulateOrExchange()

◆ Process()

◆ ProcessAll()

◆ ProcessIndependently()

◆ TransferDataFromWindow()

◆ TransferDataToWindow()

◆ UpdateUI()

Member Data Documentation

◆ ActIndex

◆ Compress

◆ Independent

◆ kActionStrings

◆ mActionChoice

◆ mActionIndex

◆ mbIndependent

◆ mBlendFrameCount

◆ mIndependent

◆ Minimum

◆ mInitialAllowedSilence

◆ mInitialAllowedSilenceT

◆ mSilenceCompressPercent

◆ mSilenceCompressPercentT

◆ mThresholdDB

◆ mThresholdText

◆ mTruncLongestAllowedSilence

◆ mTruncLongestAllowedSilenceT

◆ mUIParent

◆ Symbol

◆ Threshold

◆ Truncate