mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-16 05:11:49 -05:00
105 lines
4.4 KiB
C++
105 lines
4.4 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2019 F4EXB //
|
|
// written by Edouard Griffiths //
|
|
// //
|
|
// This program is free software; you can redistribute it and/or modify //
|
|
// it under the terms of the GNU General Public License as published by //
|
|
// the Free Software Foundation as version 3 of the License, or //
|
|
// (at your option) any later version. //
|
|
// //
|
|
// This program is distributed in the hope that it will be useful, //
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
|
// GNU General Public License V3 for more details. //
|
|
// //
|
|
// You should have received a copy of the GNU General Public License //
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef SDRBASE_DSP_UPCHANNELIZER_H_
|
|
#define SDRBASE_DSP_UPCHANNELIZER_H_
|
|
|
|
#include <QObject>
|
|
#include <algorithm>
|
|
|
|
#include "export.h"
|
|
#include "util/message.h"
|
|
|
|
#include "channelsamplesource.h"
|
|
|
|
#ifdef USE_SSE4_1
|
|
#include "dsp/inthalfbandfiltereo1.h"
|
|
#else
|
|
#include "dsp/inthalfbandfilterdb.h"
|
|
#endif
|
|
|
|
#define UPCHANNELIZER_HB_FILTER_ORDER 96
|
|
|
|
class SDRBASE_API UpChannelizer : public ChannelSampleSource {
|
|
public:
|
|
UpChannelizer(ChannelSampleSource* sampleSource);
|
|
virtual ~UpChannelizer();
|
|
|
|
virtual void pull(SampleVector::iterator begin, unsigned int nbSamples);
|
|
virtual void pullOne(Sample& sample);
|
|
virtual void prefetch(unsigned int nbSamples);
|
|
|
|
void setInterpolation(unsigned int log2Interp, unsigned int filterChainHash); //!< Define channelizer with interpolation factor and filter chain definition
|
|
void setChannelization(int requestedSampleRate, qint64 requestedCenterFrequency); //!< Define channelizer with requested sample rate and center frequency (shift in the baseband)
|
|
void setBasebandSampleRate(int basebandSampleRate, bool interp = false); //!< interp: true => use direct interpolation false => use channel configuration
|
|
int getChannelSampleRate() const { return m_channelSampleRate; };
|
|
int getChannelFrequencyOffset() const { return m_channelFrequencyOffset; }
|
|
|
|
protected:
|
|
struct FilterStage {
|
|
enum Mode {
|
|
ModeCenter,
|
|
ModeLowerHalf,
|
|
ModeUpperHalf
|
|
};
|
|
|
|
#ifdef USE_SSE4_1
|
|
typedef bool (IntHalfbandFilterEO1<UPCHANNELIZER_HB_FILTER_ORDER>::*WorkFunction)(Sample* sIn, Sample *sOut);
|
|
IntHalfbandFilterEO1<UPCHANNELIZER_HB_FILTER_ORDER>* m_filter;
|
|
#else
|
|
typedef bool (IntHalfbandFilterDB<qint32, UPCHANNELIZER_HB_FILTER_ORDER>::*WorkFunction)(Sample* sIn, Sample *sOut);
|
|
IntHalfbandFilterDB<qint32, UPCHANNELIZER_HB_FILTER_ORDER>* m_filter;
|
|
#endif
|
|
WorkFunction m_workFunction;
|
|
|
|
FilterStage(Mode mode);
|
|
~FilterStage();
|
|
|
|
bool work(Sample* sampleIn, Sample *sampleOut) {
|
|
return (m_filter->*m_workFunction)(sampleIn, sampleOut);
|
|
}
|
|
};
|
|
|
|
typedef std::vector<FilterStage*> FilterStages;
|
|
FilterStages m_filterStages;
|
|
bool m_filterChainSetMode;
|
|
std::vector<Sample> m_stageSamples;
|
|
ChannelSampleSource* m_sampleSource; //!< Modulator
|
|
int m_basebandSampleRate;
|
|
int m_requestedInputSampleRate;
|
|
int m_requestedCenterFrequency;
|
|
int m_channelSampleRate;
|
|
int m_channelFrequencyOffset;
|
|
unsigned int m_log2Interp;
|
|
unsigned int m_filterChainHash;
|
|
SampleVector m_sampleBuffer;
|
|
Sample m_sampleIn;
|
|
|
|
void applyChannelization();
|
|
void applyInterpolation();
|
|
bool signalContainsChannel(Real sigStart, Real sigEnd, Real chanStart, Real chanEnd) const;
|
|
Real createFilterChain(Real sigStart, Real sigEnd, Real chanStart, Real chanEnd);
|
|
double setFilterChain(const std::vector<unsigned int>& stageIndexes); //!< returns offset in ratio of sample rate
|
|
void freeFilterChain();
|
|
};
|
|
|
|
|
|
|
|
|
|
#endif // SDRBASE_DSP_UPCHANNELIZER_H_
|