sdrangel/include-gpl/dsp/channelizer.h

110 wiersze
2.3 KiB
C++

#ifndef INCLUDE_CHANNELIZER_H
#define INCLUDE_CHANNELIZER_H
#include <list>
#include "dsp/samplesink.h"
#include "util/export.h"
class MessageQueue;
class IntHalfbandFilter;
class SDRANGELOVE_API Channelizer : public SampleSink {
public:
Channelizer(SampleSink* sampleSink);
~Channelizer();
void configure(MessageQueue* messageQueue, int sampleRate, int centerFrequency);
void feed(SampleVector::const_iterator begin, SampleVector::const_iterator end, bool positiveOnly);
void start();
void stop();
bool handleMessage(Message* cmd);
protected:
struct FilterStage {
enum Mode {
ModeCenter,
ModeLowerHalf,
ModeUpperHalf
};
typedef bool (IntHalfbandFilter::*WorkFunction)(Sample* s);
IntHalfbandFilter* m_filter;
WorkFunction m_workFunction;
FilterStage(Mode mode);
~FilterStage();
bool work(Sample* sample)
{
return (m_filter->*m_workFunction)(sample);
}
};
typedef std::list<FilterStage*> FilterStages;
FilterStages m_filterStages;
SampleSink* m_sampleSink;
int m_inputSampleRate;
int m_requestedOutputSampleRate;
int m_requestedCenterFrequency;
int m_currentOutputSampleRate;
int m_currentCenterFrequency;
SampleVector m_sampleBuffer;
void applyConfiguration();
bool signalContainsChannel(Real sigStart, Real sigEnd, Real chanStart, Real chanEnd) const;
Real createFilterChain(Real sigStart, Real sigEnd, Real chanStart, Real chanEnd);
void freeFilterChain();
};
#endif // INCLUDE_CHANNELIZER_H
#if 0
#ifndef INCLUDE_CHANNELIZER_H
#define INCLUDE_CHANNELIZER_H
#include "samplesink.h"
#include "spectrum.h"
#include "nco.h"
#include "interpolator.h"
#include "pidcontroller.h"
#include "hardware/audiofifo.h"
class AudioOutput;
class Channelizer : public SampleSink {
public:
Channelizer();
~Channelizer();
#if 0
void setGLSpectrum(GLSpectrum* glSpectrum);
#endif
size_t workUnitSize();
size_t work(SampleVector::const_iterator begin, SampleVector::const_iterator end);
private:
#if 0
NCO m_nco;
Interpolator m_interpolator;
Real m_distance;
Interpolator m_interpolator2;
Real m_distance2;
SampleVector m_buffer;
size_t m_bufferFill;
Complex m_lastSample;
AudioOutput* m_audioOutput;
AudioFifo m_audioFifo;
Real m_resampler;
PIDController m_resamplerCtrl;
Spectrum m_spectrum;
#endif
};
#endif // INCLUDE_CHANNELIZER_H
#endif