Inheritance diagram for EffectEcho::Instance:

Collaboration diagram for EffectEcho::Instance:

Public Member Functions
	Instance (const PerTrackEffect &effect)

bool	ProcessInitialize (EffectSettings &settings, double sampleRate, ChannelNames chanMap) override

size_t	ProcessBlock (EffectSettings &settings, const float const inBlock, float const outBlock, size_t blockLen) override
	Called for destructive effect computation. More...

bool	ProcessFinalize () noexcept override

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

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

Public Member Functions inherited from PerTrackEffect::Instance
	Instance (const PerTrackEffect &processor)

	~Instance () override

bool	Process (EffectSettings &settings) final
	Uses the other virtual functions of this class. More...

bool	ProcessInitialize (EffectSettings &settings, double sampleRate, ChannelNames chanMap) override

bool	ProcessFinalize () noexcept override

Public Member Functions inherited from EffectInstanceEx
virtual bool	Init ()
	Call once to set up state for whole list of tracks to be processed. More...

virtual bool	Process (EffectSettings &settings)=0
	Actually do the effect here. More...

	~EffectInstanceEx () override

Public Member Functions inherited from EffectInstance
virtual	~EffectInstance ()

virtual size_t	GetBlockSize () const =0

virtual size_t	SetBlockSize (size_t maxBlockSize)=0

virtual unsigned	GetAudioInCount () const =0
	How many input buffers to allocate at once. More...

virtual unsigned	GetAudioOutCount () const =0
	How many output buffers to allocate at once. More...

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 std::unique_ptr< Message >	MakeMessage () const
	Called on the main thread, in which the result may be cloned. More...

virtual bool	UsesMessages () const noexcept

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 void	RealtimePassThrough (size_t group, EffectSettings &settings, const float const inBuf, size_t numSamples)
	Called instead of `RealtimeProcess` when the effect is bypassed. Default implementation does nothing. More...

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	GetTailSize () const

virtual SampleCount	GetLatency (const EffectSettings &settings, double sampleRate) const

virtual bool	NeedsDither () const

virtual bool	ProcessInitialize (EffectSettings &settings, double sampleRate, ChannelNames chanMap)=0

virtual bool	ProcessFinalize () noexcept=0

virtual size_t	ProcessBlock (EffectSettings &settings, const float const inBlock, float const outBlock, size_t blockLen)=0
	Called for destructive effect computation. More...

Public Member Functions inherited from EffectInstanceWithBlockSize
	~EffectInstanceWithBlockSize () override

size_t	GetBlockSize () const override

size_t	SetBlockSize (size_t maxBlockSize) override

Public Attributes
Floats	history

size_t	histPos

size_t	histLen

Additional Inherited Members
Public Types inherited from EffectInstance
using	Message = EffectSettingsAccess::Message

using	SampleCount = uint64_t

Protected Attributes inherited from PerTrackEffect::Instance
const PerTrackEffect &	mProcessor

Protected Attributes inherited from EffectInstanceWithBlockSize
size_t	mBlockSize { 0 }

Detailed Description

Definition at line 45 of file Echo.cpp.

Constructor & Destructor Documentation

◆ Instance()

EffectEcho::Instance::Instance ( const PerTrackEffect & effect )

inline

Definition at line 49 of file Echo.cpp.

50 : PerTrackEffect::Instance{ effect }

51 {}

PerTrackEffect::Instance

Definition: PerTrackEffect.h:43

Member Function Documentation

◆ GetAudioInCount()

unsigned EffectEcho::Instance::GetAudioInCount ( ) const

inlineoverridevirtual

How many input buffers to allocate at once.

If the instance processes channels independently, this can return 1 The result is not necessarily well defined before RealtimeInitialize

Implements EffectInstance.

Definition at line 66 of file Echo.cpp.

   {
      return 1;
   }

◆ GetAudioOutCount()

unsigned EffectEcho::Instance::GetAudioOutCount ( ) const

inlineoverridevirtual

How many output buffers to allocate at once.

The result is not necessarily well defined before RealtimeInitialize

Implements EffectInstance.

Definition at line 61 of file Echo.cpp.

   {
      return 1;
   }

◆ ProcessBlock()

size_t EffectEcho::Instance::ProcessBlock	(	EffectSettings &	settings,
		const float const	inBlock,
		float const	outBlock,
		size_t	blockLen
	)

overridevirtual

Called for destructive effect computation.

Implements EffectInstance.

Definition at line 152 of file Echo.cpp.

{
   auto& echoSettings = GetSettings(settings);
   
   const float *ibuf = inBlock[0];
   float *obuf = outBlock[0];
 
   for (decltype(blockLen) i = 0; i < blockLen; i++, histPos++)
   {
      if (histPos == histLen)
      {
         histPos = 0;
      }
      history[histPos] = obuf[i] = ibuf[i] + history[histPos] * echoSettings.decay;
   }
 
   return blockLen;
}

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

Here is the call graph for this function:

◆ ProcessFinalize()

bool EffectEcho::Instance::ProcessFinalize ( )

overridevirtualnoexcept

Called at end of destructive processing, for each (mono/stereo) track Default implementation does nothing, returns true This may be called during stack unwinding:

Implements EffectInstance.

Definition at line 147 of file Echo.cpp.

{
   return true;
}

◆ ProcessInitialize()

bool EffectEcho::Instance::ProcessInitialize	(	EffectSettings &	settings,
		double	sampleRate,
		ChannelNames	chanMap
	)

overridevirtual

Called at start of destructive processing, for each (mono/stereo) track Default implementation does nothing, returns true

Parameters

chanMap null or array terminated with ChannelNameEOL. Do not retain the pointer

Postcondition: GetAudioInCount() and GetAudioOutCount() are well defined

Implements EffectInstance.

Definition at line 119 of file Echo.cpp.

{
   auto& echoSettings = GetSettings(settings);  
   if (echoSettings.delay == 0.0)
      return false;
 
   histPos = 0;
   auto requestedHistLen = (sampleCount) (sampleRate * echoSettings.delay);
 
   // Guard against extreme delay values input by the user
   try {
      // Guard against huge delay values from the user.
      // Don't violate the assertion in as_size_t
      if (requestedHistLen !=
            (histLen = static_cast<size_t>(requestedHistLen.as_long_long())))
         throw std::bad_alloc{};
      history.reinit(histLen, true);
   }
   catch ( const std::bad_alloc& ) {
      EffectUIServices::DoMessageBox(mProcessor,
         XO("Requested value exceeds memory capacity."));
      return false;
   }
 
   return history != NULL;
}