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70 lines
3.5 KiB
C++
70 lines
3.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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// Copyright (C) 2015-2019, 2021 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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// Copyright (C) 2015 John Greb <hexameron@spam.no> //
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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 SDRBASE_DSP_PROJECTOR_H
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#define SDRBASE_DSP_PROJECTOR_H
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#include "export.h"
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#include "dsptypes.h"
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class SDRBASE_API Projector
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{
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public:
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enum ProjectionType
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{
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ProjectionReal = 0, //!< Extract real part
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ProjectionImag, //!< Extract imaginary part
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ProjectionMagLin, //!< Calculate linear magnitude or modulus
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ProjectionMagSq, //!< Calculate linear squared magnitude or power
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ProjectionDMagSq, //!< Calculate time derivative of linear squared magnitude or power
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ProjectionMagDB, //!< Calculate logarithmic (dB) of squared magnitude
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ProjectionPhase, //!< Calculate phase
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ProjectionDOAP, //!< Calculate ambiguous DOA from phase as phase difference (assuming positive)
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ProjectionDOAN, //!< Calculate ambiguous DOA from phase as phase difference (assuming negative)
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ProjectionDPhase, //!< Calculate phase derivative i.e. instantaneous frequency scaled to sample rate
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ProjectionBPSK, //!< Phase comparator BPSK evaluation
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ProjectionQPSK, //!< Phase comparator QPSK evaluation
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Projection8PSK, //!< Phase comparator 8-PSK evaluation
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Projection16PSK, //!< Phase comparator 16-PSK evaluation
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nbProjectionTypes //!< Gives the number of projections in the enum
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};
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Projector(ProjectionType projectionType);
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~Projector();
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ProjectionType getProjectionType() const { return m_projectionType; }
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void settProjectionType(ProjectionType projectionType) { m_projectionType = projectionType; }
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void setCache(Real *cache) { m_cache = cache; }
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void setCacheMaster(bool cacheMaster) { m_cacheMaster = cacheMaster; }
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Real run(const Sample& s);
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Real run(const std::complex<float>& s);
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private:
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static Real normalizeAngle(Real angle);
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ProjectionType m_projectionType;
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Real m_prevArg;
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Real m_prevVal;
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Real *m_cache;
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bool m_cacheMaster;
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};
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#endif // SDRBASE_DSP_PROJECTOR_H
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