leansdr::ss_amp_estimator< T > Struct Template Reference

#include <sdr.h>

Inheritance diagram for leansdr::ss_amp_estimator< T >:

Collaboration diagram for leansdr::ss_amp_estimator< T >:

Public Member Functions
	ss_amp_estimator (scheduler *sch, pipebuf< complex< T >> &_in, pipebuf< T > &_out_ss, pipebuf< T > &_out_ampmin, pipebuf< T > &_out_ampmax)
void	run ()
Public Member Functions inherited from leansdr::runnable
	runnable (scheduler *_sch, const char *name)
Public Member Functions inherited from leansdr::runnable_common
	runnable_common (const char *_name)
virtual	~runnable_common ()
virtual void	shutdown ()

Public Attributes
unsigned long	window_size
unsigned long	decimation
Public Attributes inherited from leansdr::runnable_common
const char *	name

Private Attributes
pipereader< complex< T > >	in
pipewriter< T >	out_ss
pipewriter< T >	out_ampmin
pipewriter< T >	out_ampmax
unsigned long	phase

Additional Inherited Members
Protected Attributes inherited from leansdr::runnable
scheduler *	sch

Detailed Description

template<typename T>
struct leansdr::ss_amp_estimator< T >

Definition at line 266 of file sdr.h.

Constructor & Destructor Documentation

ss_amp_estimator()

template<typename T >

leansdr::ss_amp_estimator< T >::ss_amp_estimator ( scheduler *  sch, pipebuf< complex< T >> &  _in, pipebuf< T > &  _out_ss, pipebuf< T > &  _out_ampmin, pipebuf< T > &  _out_ampmax  )

inline

Definition at line 271 of file sdr.h.

                                              : runnable(sch, "SS estimator"),
                                                window_size(1024),
                                                decimation(1024),
                                                in(_in),
                                                out_ss(_out_ss),
                                                out_ampmin(_out_ampmin),
                                                out_ampmax(_out_ampmax),
                                                phase(0)
    {
    }

Member Function Documentation

run()

template<typename T >

void leansdr::ss_amp_estimator< T >::run ( )

inlinevirtual

Reimplemented from leansdr::runnable_common.

Definition at line 286 of file sdr.h.

References leansdr::auto_notch< T >::decimation, leansdr::complex< T >::im, leansdr::auto_notch< T >::in, leansdr::auto_notch< T >::phase, and leansdr::complex< T >::re.

    {
        while (in.readable() >= window_size && out_ss.writable() >= 1 && out_ampmin.writable() >= 1 && out_ampmax.writable() >= 1)
        {
            phase += window_size;

            if (phase >= decimation)
            {
                phase -= decimation;
                complex<T> *p = in.rd(), *pend = p + window_size;
                float s2 = 0;
                float amin = 1e38, amax = 0;

                for (; p < pend; ++p)
                {
                    float mag2 = (float)p->re * p->re + (float)p->im * p->im;
                    s2 += mag2;
                    float mag = sqrtf(mag2);
                    if (mag < amin)
                        amin = mag;
                    if (mag > amax)
                        amax = mag;
                }

                out_ss.write(sqrtf(s2 / window_size));
                out_ampmin.write(amin);
                out_ampmax.write(amax);
            }

            in.read(window_size);
        }
    }

Member Data Documentation

decimation

template<typename T >

unsigned long leansdr::ss_amp_estimator< T >::decimation

Definition at line 269 of file sdr.h.

in

template<typename T >

pipereader<complex<T> > leansdr::ss_amp_estimator< T >::in

private

Definition at line 320 of file sdr.h.

out_ampmax

template<typename T >

pipewriter<T> leansdr::ss_amp_estimator< T >::out_ampmax

private

Definition at line 321 of file sdr.h.

out_ampmin

template<typename T >

pipewriter<T> leansdr::ss_amp_estimator< T >::out_ampmin

private

Definition at line 321 of file sdr.h.

out_ss

template<typename T >

pipewriter<T> leansdr::ss_amp_estimator< T >::out_ss

private

Definition at line 321 of file sdr.h.

phase

template<typename T >

unsigned long leansdr::ss_amp_estimator< T >::phase

private

Definition at line 322 of file sdr.h.

window_size

template<typename T >

unsigned long leansdr::ss_amp_estimator< T >::window_size

Definition at line 268 of file sdr.h.

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The documentation for this struct was generated from the following file:

• plugins/channelrx/demoddatv/leansdr/sdr.h