Produces a {1, 0, 0, 0, ...} sequence. More...

#include <hart_impulse.hpp>

Inheritance diagram for Impulse< SampleType >:

Public Member Functions
	Impulse ()=default
	Creates an impulse signal instance.

void	prepare (double, size_t, size_t) override
	Prepare the signal for rendering.

void	renderNextBlock (AudioBuffer< SampleType > &output) override
	Renders next block audio for the signal.

void	reset () override
	Resets the Signal to initial state.

	HART_DEFINE_GENERIC_REPRESENT (Impulse)

Public Member Functions inherited from Signal< SampleType, Impulse< SampleType > >
Impulse< SampleType > &	followedBy (DerivedDSP &&dsp) &
	Adds a DSP effect to the end of signal's DSP chain.

Impulse< SampleType > &&	followedBy (DerivedDSP &&dsp) &&
	Adds a DSP effect to the end of signal's DSP chain.

Impulse< SampleType > &	followedBy (std::unique_ptr< DSPBase< SampleType > > dsp) &
	Adds a DSP effect to the end of signal's DSP chain.

Impulse< SampleType > &&	followedBy (std::unique_ptr< DSPBase< SampleType > > dsp) &&
	Adds a DSP effect to the end of signal's DSP chain.

std::unique_ptr< SignalBase< SampleType > >	copy () const override
	Returns a smart pointer with a copy of this object.

std::unique_ptr< SignalBase< SampleType > >	move () override
	Returns a smart pointer with a moved instance of this object.

Impulse< SampleType > &	skipTo (double startTimestampSeconds) &
	Skips the signal to a specific timestamp.

Impulse< SampleType > &&	skipTo (double startTimestampSeconds) &&
	Skips the signal to a specific timestamp.

Impulse< SampleType >	operator- () const
	Returns a copy of this signal, but with flipped phase.

Impulse< SampleType >	operator~ () const
	Returns a copy of this signal, but with flipped phase.

Public Member Functions inherited from SignalBase< SampleType >
	SignalBase ()=default
	Default constructor.

	SignalBase (const SignalBase &other)
	Copies other signal.

	SignalBase (SignalBase &&other) noexcept
	Moves from other signal.

virtual	~SignalBase ()=default
	Destructor.

SignalBase &	operator= (const SignalBase &other)
	Copies from other signal.

SignalBase &	operator= (SignalBase &&other) noexcept
	Moves from other signal.

virtual bool	supportsNumChannels (size_t) const
	Tells the host whether this Signal is capable of generating audio for a certain amount of channels.

virtual bool	supportsSampleRate (double) const
	Tells whether this Signal supports given sample rate.

virtual void	represent (std::ostream &stream) const =0
	Makes a text representation of this Signal for test failure outputs.

void	prepareWithDSPChain (double sampleRateHz, size_t numOutputChannels, size_t maxBlockSizeFrames)
	Prepares the signal and all attached effects in the DSP chain for rendering.

void	renderNextBlockWithDSPChain (AudioBuffer< SampleType > &output)
	Renders next block audio for the signal and all the effects in the DSP chain.

virtual void	resetWithDSPChain ()
	Resets to Signal and all the effects attached to its DSP chain to initial state.

size_t	getDSPChainSize () const
	Returns the size of the DSP chain attached to the Signal.

DSPBase< SampleType > *	getDSP (int index=-1) const
	Access a specific element in the DSP chain.

std::unique_ptr< DSPBase< SampleType > >	popDSP (int index=-1)
	Extract a specific element in the DSP chain by removing it.

Additional Inherited Members
Protected Member Functions inherited from SignalBase< SampleType >
void	setNumChannels (size_t numChannels)

size_t	getNumChannels ()

Protected Attributes inherited from SignalBase< SampleType >
size_t	m_numChannels = 1

double	m_startTimestampSeconds = 0.0

std::vector< std::unique_ptr< DSPBase< SampleType > > >	m_dspChain

Related Symbols inherited from Signal< SampleType, Impulse< SampleType > >
MixedSignal< SampleType >	operator- (const Signal< SampleType, DerivedSignalTypeLHS > &lhs, const Signal< SampleType, DerivedSignalTypeRHS > &rhs)
	Subtracts one signal from another, resulting in a new mixed signal.

MixedSignal< SampleType >	operator+ (const Signal< SampleType, DerivedSignalTypeLHS > &lhs, const Signal< SampleType, DerivedSignalTypeRHS > &rhs)
	Adds one signal to another, resulting in a new mixed signal.

std::ostream &	operator<< (std::ostream &stream, const SignalBase< SampleType > &signal)
	Prints readable text representation of the Signal object into the I/O stream.

auto	operator>> (Impulse< SampleType > &signal, DerivedDSP &&dsp) -> decltype(signal.followedBy(std::forward< DerivedDSP >(dsp)))
	Adds a DSP effect to the end of signal's DSP chain by transfering it.

auto	operator>> (Impulse< SampleType > &&signal, DerivedDSP &&dsp) -> decltype(std::move(signal).followedBy(std::forward< DerivedDSP >(dsp)))
	Adds a DSP effect to the end of signal's DSP chain by transfering it.

Detailed Description

template<typename SampleType>
class hart::Impulse< SampleType >

Produces a {1, 0, 0, 0, ...} sequence.

Definition at line 12 of file hart_impulse.hpp.

Constructor & Destructor Documentation

◆ Impulse()

template<typename SampleType >

Impulse ( )

default

Creates an impulse signal instance.

Member Function Documentation

◆ prepare()

template<typename SampleType >

void prepare	(	double	sampleRateHz,
		size_t	numOutputChannels,
		size_t	maxBlockSizeFrames
	)

inlineoverridevirtual

Prepare the signal for rendering.

This method is guaranteed to be called after supportsNumChannels() and supportsSampleRate(), but before renderNextBlock(). It is guaranteed that numChannels obeys supportsNumChannels() preferences, same with sampleRateHz and supportsSampleRate(). It is guaranteed that all subsequent renderNextBlock() calls will be in line with the arguments received in this callback.

Parameters

sampleRateHz	sample rate at which the audio should be generated
numOutputChannels	Number of output channels to be filled
maxBlockSizeFrames	Maximum block size in frames (samples)

Implements SignalBase< SampleType >.

Definition at line 19 of file hart_impulse.hpp.

◆ renderNextBlock()

template<typename SampleType >

void renderNextBlock ( AudioBuffer< SampleType > & output )

inlineoverridevirtual

Renders next block audio for the signal.

Depending on circumstances, this callback will either be called once to generate an entire piece of audio from start to finish, or called repeatedly, one block at a time. This method is guaranteed to be called strictly after prepare(), or not called at all. Number of channels and max block size are guaranteed to be in line with the ones set by prepare() callback. Assume sample rate to always be equal to the one received in the last prepare() callback. All audio blocks except the last one are guaranteed to be equal to maxBlockSizeFrames set in prepare() callback.

Warning: Remember that the very last block of audio is almost always smaller than the block size set in prepare(), so be careful with buffer bounds.

Note: Note that this method does not have to be real-time safe, as all rendering always happens offline. Also note that, unlike real-time audio applications, this method is called on the same thread as all others like prepare().

Parameters

output Output audio block