mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-06 00:41:17 -05:00
104 lines
3.7 KiB
C
104 lines
3.7 KiB
C
|
///////////////////////////////////////////////////////////////////////////////////
|
||
|
|
// Copyright (C) 2016 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 //
|
||
|
|
// //
|
||
|
|
// 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 <dsp/basebandsamplesource.h>
|
||
|
|
#include <list>
|
||
|
|
#include <QMutex>
|
||
|
|
#include "util/export.h"
|
||
|
|
#include "util/message.h"
|
||
|
|
|
||
|
|
class MessageQueue;
|
||
|
|
class IntHalfbandFilter;
|
||
|
|
|
||
|
|
class SDRANGEL_API UpChannelizer : public BasebandSampleSource {
|
||
|
|
Q_OBJECT
|
||
|
|
public:
|
||
|
|
class SDRANGEL_API MsgChannelizerNotification : public Message {
|
||
|
|
MESSAGE_CLASS_DECLARATION
|
||
|
|
|
||
|
|
public:
|
||
|
|
MsgChannelizerNotification(int samplerate, qint64 frequencyOffset) :
|
||
|
|
Message(),
|
||
|
|
m_sampleRate(samplerate),
|
||
|
|
m_frequencyOffset(frequencyOffset)
|
||
|
|
{ }
|
||
|
|
|
||
|
|
int getSampleRate() const { return m_sampleRate; }
|
||
|
|
qint64 getFrequencyOffset() const { return m_frequencyOffset; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
int m_sampleRate;
|
||
|
|
qint64 m_frequencyOffset;
|
||
|
|
};
|
||
|
|
|
||
|
|
UpChannelizer(BasebandSampleSource* sampleSink);
|
||
|
|
virtual ~UpChannelizer();
|
||
|
|
|
||
|
|
void configure(MessageQueue* messageQueue, int sampleRate, int centerFrequency);
|
||
|
|
int getOutputSampleRate() const { return m_outputSampleRate; }
|
||
|
|
|
||
|
|
virtual void start();
|
||
|
|
virtual void stop();
|
||
|
|
virtual void pull(Sample& sample);
|
||
|
|
virtual bool handleMessage(const Message& cmd);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
struct FilterStage {
|
||
|
|
enum Mode {
|
||
|
|
ModeCenter,
|
||
|
|
ModeLowerHalf,
|
||
|
|
ModeUpperHalf
|
||
|
|
};
|
||
|
|
|
||
|
|
typedef bool (IntHalfbandFilter::*WorkFunction)(Sample* sIn, Sample *sOut);
|
||
|
|
IntHalfbandFilter* m_filter;
|
||
|
|
WorkFunction m_workFunction;
|
||
|
|
|
||
|
|
FilterStage(Mode mode);
|
||
|
|
~FilterStage();
|
||
|
|
|
||
|
|
bool work(Sample* sampleIn, Sample *sampleOut)
|
||
|
|
{
|
||
|
|
return (m_filter->*m_workFunction)(sampleIn, sampleOut);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
typedef std::list<FilterStage*> FilterStages;
|
||
|
|
FilterStages m_filterStages;
|
||
|
|
BasebandSampleSource* m_sampleSource; //!< Modulator
|
||
|
|
int m_outputSampleRate;
|
||
|
|
int m_requestedInputSampleRate;
|
||
|
|
int m_requestedCenterFrequency;
|
||
|
|
int m_currentInputSampleRate;
|
||
|
|
int m_currentCenterFrequency;
|
||
|
|
SampleVector m_sampleBuffer;
|
||
|
|
Sample m_sampleIn;
|
||
|
|
QMutex m_mutex;
|
||
|
|
|
||
|
|
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();
|
||
|
|
|
||
|
|
signals:
|
||
|
|
void outputSampleRateChanged();
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* SDRBASE_DSP_UPCHANNELIZER_H_ */
|