jens
69a81ff7fc
- improved handling when data count is 0 git-svn-id: http://moon:8086/svn/software/trunk/libsrc/cpp@1085 b431acfa-c32f-4a4a-93f1-934dc6c82436
53 lines
1.1 KiB
C++
53 lines
1.1 KiB
C++
// --------------------------------------------------------------
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#ifndef _RADIO_DESYMBOLIZER_HPP_
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#define _RADIO_DESYMBOLIZER_HPP_
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#include <radio/radio_types.h>
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#include <radio/cpx.h>
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#include "DeFormatter.hpp"
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class DeSymbolizer : public Processor::Block
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{
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enum State
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{
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Idle,
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Acq,
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Trk
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};
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static const size_t SYNC_COUNTER_RELOAD = 3;
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public:
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DeSymbolizer();
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virtual ~DeSymbolizer() = default;
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void setNumBitsPerSymbol(size_t nBitsPerSym);
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// Processor::Block
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void prepare() override;
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void process() override;
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size_t sym2bytes(symbol_t symbol, uint8_t *pBytes);
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private:
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size_t m_nBitsPerSym;
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size_t m_dataBitCount;
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symbol_t m_lastSymbol;
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symbol_t m_symbolMask;
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symbol_t differentialDecode(symbol_t symbol);
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State m_state;
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size_t m_sync_dist;
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size_t m_sync_dist_last;
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size_t m_sync_counter;
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Processor::Buffer<symbol_t> *m_buf_in;
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Processor::Buffer<uint8_t> *m_buf_out;
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void process(symbol_t symbol);
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void sync(symbol_t symbol);
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bool is_preamble(uint16_t data);
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};
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// --------------------------------------------------------------
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#endif // _RADIO_DESYMBOLIZER_HPP_
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