git clone git://git.osmocom.org/sdrangelove.git

2026-06-01 21:54:55 -04:00 · 2014-05-18 16:52:39 +01:00
commit 7d3bfb26fc
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+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
+// written by Christian Daniel                                                   //
+//                                                                               //
+// 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 INCLUDE_RTLSDRTHREAD_H
+#define INCLUDE_RTLSDRTHREAD_H
+
+#include <QThread>
+#include <QMutex>
+#include <QWaitCondition>
+#include <rtl-sdr.h>
+#include "dsp/samplefifo.h"
+#include "dsp/inthalfbandfilter.h"
+
+class RTLSDRThread : public QThread {
+	Q_OBJECT
+
+public:
+	RTLSDRThread(rtlsdr_dev_t* dev, SampleFifo* sampleFifo, QObject* parent = NULL);
+	~RTLSDRThread();
+
+	void startWork();
+	void stopWork();
+
+	void setDecimation(int decimation);
+
+private:
+	QMutex m_startWaitMutex;
+	QWaitCondition m_startWaiter;
+	bool m_running;
+
+	rtlsdr_dev_t* m_dev;
+	SampleVector m_convertBuffer;
+	SampleFifo* m_sampleFifo;
+
+	int m_decimation;
+
+	IntHalfbandFilter m_decimator2;
+	IntHalfbandFilter m_decimator4;
+	IntHalfbandFilter m_decimator8;
+	IntHalfbandFilter m_decimator16;
+
+	void run();
+
+	void decimate2(SampleVector::iterator* it, const quint8* buf, qint32 len);
+	void decimate4(SampleVector::iterator* it, const quint8* buf, qint32 len);
+	void decimate8(SampleVector::iterator* it, const quint8* buf, qint32 len);
+	void decimate16(SampleVector::iterator* it, const quint8* buf, qint32 len);
+	void callback(const quint8* buf, qint32 len);
+
+	static void callbackHelper(unsigned char* buf, uint32_t len, void* ctx);
+};
+
+#endif // INCLUDE_RTLSDRTHREAD_H