mirror of https://github.com/g4klx/MMDVM.git
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
/*
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* Copyright (C) 2020 by Jonathan Naylor G4KLX
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* Copyright (C) 2020 by Geoffrey Merck F4FXL - KC3FRA
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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; either version 2 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 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, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#if !defined(FMDOWNSAMPLER_H)
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#define FMDOWNSAMPLER_H
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#include "Config.h"
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#include "FMDownsampleRB.h"
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class CFMDownsampler {
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public:
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CFMDownsampler(uint16_t length);
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void addSample(q15_t sample);
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inline bool getPackedData(uint8_t& data){ return m_ringBuffer.get(data); };
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inline bool hasOverflowed() { return m_ringBuffer.hasOverflowed(); };
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private:
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CFMDownsampleRB m_ringBuffer;
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union {
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int32_t m_samplePack;
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int8_t m_samplePackBytes[4];
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};
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uint8_t m_packIndex;
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uint8_t m_downSampleIndex;
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};
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#endif |