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64 lines
2.6 KiB
C++
64 lines
2.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2015-2018 Edouard Griffiths, F4EXB //
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// Copyright (C) 2020 Jon Beniston, M7RCE //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDE_AUDIOINPUTWORKER_H
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#define INCLUDE_AUDIOINPUTWORKER_H
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#include <QObject>
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#include "dsp/samplesinkfifo.h"
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#include "dsp/decimators.h"
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#include "audioinputsettings.h"
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class AudioFifo;
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class AudioInputWorker : public QObject {
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Q_OBJECT
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public:
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AudioInputWorker(SampleSinkFifo* sampleFifo, AudioFifo *fifo, QObject* parent = nullptr);
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~AudioInputWorker();
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void startWork();
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void stopWork();
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void setLog2Decimation(unsigned int log2_decim) {m_log2Decim = log2_decim;}
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void setIQMapping(AudioInputSettings::IQMapping iqMapping) {m_iqMapping = iqMapping;}
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static const int m_convBufSamples = 4096;
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private:
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AudioFifo* m_fifo;
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bool m_running;
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unsigned int m_log2Decim;
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AudioInputSettings::IQMapping m_iqMapping;
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qint16 m_buf[m_convBufSamples*2]; // stereo (I, Q)
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SampleVector m_convertBuffer;
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SampleSinkFifo* m_sampleFifo;
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Decimators<qint32, qint16, SDR_RX_SAMP_SZ, 16, true> m_decimatorsIQ;
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int m_quNCOPhase; //!< Quarter sample rate pseudo NCO phase index (0, 90, 180, 270)
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void workIQ(unsigned int nbRead);
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void decimate(qint16 *buf, unsigned int nbRead);
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private slots:
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void handleAudio();
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};
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#endif // INCLUDE_AUDIOINPUTWORKER_H
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