kopia lustrzana https://github.com/f4exb/sdrangel
131 wiersze
4.5 KiB
C++
131 wiersze
4.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2016 Edouard Griffiths, F4EXB. //
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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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// //
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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 DSDPLUS_DSD_DECODER_H_
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#define DSDPLUS_DSD_DECODER_H_
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#include "dsd_opts.h"
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#include "dsd_state.h"
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#include "dsd_filters.h"
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#include "dmr_voice.h"
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/*
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* Frame sync patterns
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*/
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#define INV_P25P1_SYNC "333331331133111131311111"
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#define P25P1_SYNC "111113113311333313133333"
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#define X2TDMA_BS_VOICE_SYNC "113131333331313331113311"
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#define X2TDMA_BS_DATA_SYNC "331313111113131113331133"
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#define X2TDMA_MS_DATA_SYNC "313113333111111133333313"
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#define X2TDMA_MS_VOICE_SYNC "131331111333333311111131"
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#define DSTAR_HD "131313131333133113131111"
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#define INV_DSTAR_HD "313131313111311331313333"
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#define DSTAR_SYNC "313131313133131113313111"
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#define INV_DSTAR_SYNC "131313131311313331131333"
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#define NXDN_MS_DATA_SYNC "313133113131111333"
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#define INV_NXDN_MS_DATA_SYNC "131311331313333111"
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#define NXDN_MS_VOICE_SYNC "313133113131113133"
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#define INV_NXDN_MS_VOICE_SYNC "131311331313331311"
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#define INV_NXDN_BS_DATA_SYNC "131311331313333131"
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#define NXDN_BS_DATA_SYNC "313133113131111313"
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#define INV_NXDN_BS_VOICE_SYNC "131311331313331331"
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#define NXDN_BS_VOICE_SYNC "313133113131113113"
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#define DMR_BS_DATA_SYNC "313333111331131131331131"
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#define DMR_BS_VOICE_SYNC "131111333113313313113313"
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#define DMR_MS_DATA_SYNC "311131133313133331131113"
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#define DMR_MS_VOICE_SYNC "133313311131311113313331"
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#define INV_PROVOICE_SYNC "31313111333133133311331133113311"
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#define PROVOICE_SYNC "13131333111311311133113311331133"
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#define INV_PROVOICE_EA_SYNC "13313133113113333311313133133311"
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#define PROVOICE_EA_SYNC "31131311331331111133131311311133"
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namespace DSDPlus
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{
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class DSDDecoder
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{
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friend class DSDDMRVoice;
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public:
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typedef enum
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{
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DSDLookForSync,
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DSDNoSync,
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DSDprocessFrame,
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DSDprocessNXDNVoice,
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DSDprocessNXDNData,
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DSDprocessDSTAR,
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DSDprocessDSTAR_HD,
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DSDprocessDMRvoice,
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DSDprocessDMRdata,
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DSDprocessX2TDMAvoice,
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DSDprocessX2TDMAdata,
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DSDprocessProVoice,
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DSDprocessUnknown
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} DSDFSMState;
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DSDDecoder();
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~DSDDecoder();
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void run(short sample);
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private:
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bool pushSample(short sample, int have_sync); //!< push a new sample into the decoder. Returns true if a new symbol is available
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int getFrameSync();
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void resetSymbol();
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void resetFrameSync();
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void printFrameSync(const char *frametype, int offset, char *modulation);
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void noCarrier();
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void printFrameInfo();
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void processFrame();
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static int comp(const void *a, const void *b);
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DSDOpts m_opts;
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DSDState m_state;
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DSDFSMState m_fsmState;
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// symbol engine
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int m_symbol; //!< the last retrieved symbol
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int m_sampleIndex; //!< the current sample index for the symbol in progress
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int m_sum;
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int m_count;
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// sync engine:
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int m_sync; //!< The current sync type
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int m_dibit, m_synctest_pos, m_lastt;
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char m_synctest[25];
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char m_synctest18[19];
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char m_synctest32[33];
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char m_modulation[8];
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char *m_synctest_p;
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char m_synctest_buf[10240];
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int m_lmin, m_lmax, m_lidx;
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int m_lbuf[24], m_lbuf2[24];
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int m_lsum;
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char m_spectrum[64];
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int m_t;
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// Other
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DSDFilters m_dsdFilters;
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// Frame decoders
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DSDDMRVoice m_dsdDMRVoice;
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};
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} // namespace dsdplus
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#endif /* DSDPLUS_DSD_DECODER_H_ */
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