An interpolating sub-sampler. More...

#include <subsample.hh>

Inheritance diagram for sdr::InpolSubSampler< iScalar, oScalar >:

Public Member Functions
	InpolSubSampler (float frac)
	Constructor. More...

virtual	~InpolSubSampler ()
	Destructor. More...

virtual void	config (const Config &src_cfg)
	Configures the sub-sampling node. More...

virtual void	process (const Buffer< iScalar > &buffer, bool allow_overwrite)
	Performs the sub-sampling. More...

Public Member Functions inherited from sdr::Sink< iScalar >
	Sink ()
	Constructor. More...

virtual	~Sink ()
	Drestructor. More...

virtual void	handleBuffer (const RawBuffer &buffer, bool allow_overwrite)
	Re-implemented from `SinkBase`. More...

Public Member Functions inherited from sdr::SinkBase
	SinkBase ()
	Constructor. More...

virtual	~SinkBase ()
	Destructor. More...

Public Member Functions inherited from sdr::Source
	Source ()
	Constructor. More...

virtual	~Source ()
	Destructor. More...

virtual void	send (const RawBuffer &buffer, bool allow_overwrite=false)
	Sends the given buffer to all connected sinks. More...

void	connect (SinkBase *sink, bool direct=false)
	Connect this source to a sink. More...

void	disconnect (SinkBase *sink)
	Disconnect a sink again. More...

virtual void	setConfig (const Config &config)
	Stores the configuration and propergates it if the configuration has been changed. More...

virtual double	sampleRate () const
	Returns the configured sample rate or `0` otherwise. More...

virtual Config::Type	type () const
	Returns the configured source type or `Config::Type_UNDEFINED` otherwise. More...

template<class T >
void	addEOS (T instance, void(T::function)())
	Adds a callback to the end-of-stream signal of the source. More...

Protected Attributes
float	_frac
	The sub-sampling fraction. More...

float	_mu
	The current (fractional) sample count. More...

Buffer< oScalar >	_dl
	A delay-line (buffer) for the interpolation. More...

size_t	_dl_idx
	Index of the delay-line. More...

Buffer< oScalar >	_buffer
	The output buffer. More...

Protected Attributes inherited from sdr::Source
Config	_config
	Holds the source configuration, this can be updated by calling `setConfig`. More...

std::map< SinkBase *, bool >	_sinks
	The connected sinks. More...

std::list< DelegateInterface * >	_eos
	The connected EOS singal handlers. More...

Additional Inherited Members
Protected Member Functions inherited from sdr::Source
void	signalEOS ()
	Signals the EOS. More...

void	propagateConfig (const Config &config)
	Propagates the given configuration to all connected sinks. More...

Detailed Description

template<class iScalar, class oScalar = iScalar>
class sdr::InpolSubSampler< iScalar, oScalar >

An interpolating sub-sampler.

This node uses an 8-tap FIR filter to interpolate between two values (given 8). Please do not use this node to subsample by a factor grater than 8, as this may result into artifacts unless the signal was filtered accordingly before subsampling it.