Demodulates FM from an I/Q signal. More...

#include <demod.hh>

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

Public Types
typedef Traits< iScalar >::SScalar	SScalar
	The super scalar. More...

Public Member Functions
	FMDemod ()
	Constructor. More...

virtual	~FMDemod ()
	Destructor. More...

virtual void	config (const Config &src_cfg)
	Configures the FM demodulator. More...

virtual void	process (const Buffer< std::complex< iScalar > > &buffer, bool allow_overwrite)
	Performs the FM demodulation. More...

Public Member Functions inherited from sdr::Sink< std::complex< 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 Member Functions
void	_process (const Buffer< std::complex< iScalar > > &in, const Buffer< oScalar > &out)
	The actual demodulation. More...

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...

Protected Attributes
int	_shift
	Output rescaling. More...

std::complex< iScalar >	_last_value
	The last input value. More...

bool	_can_overwrite
	If true, in-place demodulation is poissible. More...

Buffer< oScalar >	_buffer
	The output buffer, unused if demodulation is performed in-place. 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...

Detailed Description

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

Demodulates FM from an I/Q signal.

This node only implements the demodulation of the signal, the needed post-filtering (deemphasize) is implemented in a separate node, sdr::FMDeemph.