An Effect that causes an echo, variable delay and volume. More...

#include <Echo.h>

Inheritance diagram for EffectEcho:

Collaboration diagram for EffectEcho:

Classes
struct	Editor

struct	Instance

Public Member Functions
	EffectEcho ()

virtual	~EffectEcho ()

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...

std::unique_ptr< EffectEditor >	MakeEditor (ShuttleGui &S, EffectInstance &instance, EffectSettingsAccess &access, const EffectOutputs *pOutputs) const override
	Called only from PopulateUI, to add controls to effect panel. More...

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

Public Member Functions inherited from EffectWithSettings< EffectEchoSettings, StatelessPerTrackEffect >
EffectSettings	MakeSettings () const override

bool	CopySettingsContents (const EffectSettings &src, EffectSettings &dst) const override

Public Member Functions inherited from StatelessPerTrackEffect
	~StatelessPerTrackEffect () override

Public Member Functions inherited from PerTrackEffect
	~PerTrackEffect () override

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

virtual std::unique_ptr< EffectEditor >	MakeEditor (ShuttleGui &S, EffectInstance &instance, EffectSettingsAccess &access, const EffectOutputs *pOutputs) const =0
	Called only from PopulateUI, to add controls to effect panel. More...

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 Attributes
static const ComponentInterfaceSymbol	Symbol { XO("Echo") }

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
const EffectParameterMethods &	Parameters () const override

Static Private Attributes
static constexpr EffectParameter	Delay

static constexpr EffectParameter	Decay

Additional Inherited Members
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 }

Static Public Member Functions inherited from EffectWithSettings< EffectEchoSettings, StatelessPerTrackEffect >
static EffectEchoSettings &	GetSettings (EffectSettings &settings)
	Assume settings originated from MakeSettings() and copies thereof. More...

static const EffectEchoSettings &	GetSettings (const EffectSettings &settings)
	Assume settings originated from MakeSettings() and copies thereof. More...

static EffectEchoSettings *	FetchParameters (StatelessPerTrackEffect &, EffectSettings &s)

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={})

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 PerTrackEffect
bool	DoPass1 () const

bool	DoPass2 () const

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

std::shared_ptr< EffectOutputTracks >	MakeOutputTracks ()

void	DestroyOutputTracks () const

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 PerTrackEffect
sampleCount	mSampleCnt {}

Protected Attributes inherited from EffectBase
double	mF0 {}

double	mF1 {}

wxArrayString	mPresetNames

unsigned	mUIFlags { 0 }

Detailed Description

An Effect that causes an echo, variable delay and volume.

Definition at line 33 of file Echo.h.

Constructor & Destructor Documentation

◆ EffectEcho()

EffectEcho::EffectEcho ( )

Definition at line 86 of file Echo.cpp.

{
   SetLinearEffectFlag(true);
}

References EffectBase::SetLinearEffectFlag().

Referenced by Parameters().

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◆ ~EffectEcho()

EffectEcho::~EffectEcho ( )

virtual

Definition at line 91 of file Echo.cpp.

92{

93}

Member Function Documentation

◆ GetDescription()

TranslatableString EffectEcho::GetDescription ( ) const

overridevirtual

Implements ComponentInterface.

Definition at line 102 of file Echo.cpp.

{
   return XO("Repeats the selected audio again and again");
}

References XO().

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◆ GetSymbol()

ComponentInterfaceSymbol EffectEcho::GetSymbol ( ) const

overridevirtual

Implements ComponentInterface.

Definition at line 97 of file Echo.cpp.

{
   return Symbol;
}

References Symbol.

◆ GetType()

EffectType EffectEcho::GetType ( ) const

overridevirtual

Type determines how it behaves.

Implements EffectDefinitionInterface.

Definition at line 114 of file Echo.cpp.

{
   return EffectTypeProcess;
}

References EffectTypeProcess.

◆ MakeEditor()

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

overridevirtual

Called only from PopulateUI, to add controls to effect panel.

Returns: also returned from PopulateUI

Postcondition: result: result != nullptr

Implements StatelessEffectUIServices.

Definition at line 194 of file Echo.cpp.

{
   auto& settings = access.Get();
   auto& myEffSettings = GetSettings(settings);
   auto result = std::make_unique<Editor>(*this, access, myEffSettings);
   result->PopulateOrExchange(S);
   return result;
}

References EffectSettingsAccess::Get(), EffectWithSettings< EffectEchoSettings, StatelessPerTrackEffect >::GetSettings(), S, and settings().

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◆ MakeInstance()

std::shared_ptr< EffectInstance > EffectEcho::MakeInstance ( ) const

overridevirtual

Make an object maintaining short-term state of an Effect.

One effect may have multiple instances extant simultaneously. Instances have state, may be implemented in foreign code, and are temporary, whereas EffectSettings represents persistent effect state that can be saved and reloaded from files.

Parameters

settings may be assumed to have a lifetime enclosing the instance's

Postcondition: true (no promises that the result isn't null)

Implements EffectInstanceFactory.

Definition at line 78 of file Echo.cpp.

{
   return std::make_shared<Instance>(*this);
}

◆ ManualPage()

ManualPageID EffectEcho::ManualPage ( ) const

overridevirtual

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

Reimplemented from EffectDefinitionInterface.

Definition at line 107 of file Echo.cpp.

{
   return L"Echo";
}

◆ Parameters()

const EffectParameterMethods & EffectEcho::Parameters ( ) const

overrideprivatevirtual

Reimplemented from Effect.

Definition at line 31 of file Echo.cpp.

{
   static CapturedParameters<EffectEcho,
      Delay, Decay
   > parameters;
   return parameters;
}

References Decay, Delay, and EffectEcho().

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Member Data Documentation

◆ Decay

constexpr EffectParameter EffectEcho::Decay

staticconstexprprivate

Initial value:

{ &EffectEchoSettings::decay,

L"Decay", EffectEchoSettings::decayDefault, 0.0f, FLT_MAX, 1.0f }

EffectEchoSettings::decayDefault

static constexpr double decayDefault

Definition: Echo.h:27

EffectEchoSettings::decay

double decay

Definition: Echo.h:30

Definition at line 84 of file Echo.h.

Referenced by Parameters(), and EffectEcho::Editor::PopulateOrExchange().

◆ Delay

constexpr EffectParameter EffectEcho::Delay

staticconstexprprivate

Initial value:

{ &EffectEchoSettings::delay,

L"Delay", EffectEchoSettings::delayDefault, 0.001f, FLT_MAX, 1.0f }

EffectEchoSettings::delayDefault

static constexpr double delayDefault

Definition: Echo.h:26

EffectEchoSettings::delay

double delay

Definition: Echo.h:29

Definition at line 82 of file Echo.h.

Referenced by Parameters(), and EffectEcho::Editor::PopulateOrExchange().

◆ Symbol

const ComponentInterfaceSymbol EffectEcho::Symbol { XO("Echo") }

static

Definition at line 39 of file Echo.h.

Referenced by GetSymbol().

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

Classes

Public Member Functions

Static Public Attributes

Private Member Functions

Static Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ EffectEcho()

◆ ~EffectEcho()

Member Function Documentation

◆ GetDescription()

◆ GetSymbol()

◆ GetType()

◆ MakeEditor()

◆ MakeInstance()

◆ ManualPage()

◆ Parameters()

Member Data Documentation

◆ Decay

◆ Delay

◆ Symbol