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M17: M17Demodulator M17FrameDecoder and M17Framer code cleanup

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This commit is contained in:
f4exb 2022-07-27 23:38:35 +02:00
parent 820a5dc992
commit 8e1d5a3bbd
3 changed files with 9 additions and 16 deletions
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14
modemm17/M17Demodulator.h
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@ -27,14 +27,8 @@ struct MODEMM17_API M17Demodulator
static const uint16_t SYMBOL_RATE = 4800;
static const uint16_t SAMPLES_PER_SYMBOL = SAMPLE_RATE / SYMBOL_RATE;
static const uint16_t BLOCK_SIZE = 192;
static constexpr float sample_rate = SAMPLE_RATE;
static constexpr float symbol_rate = SYMBOL_RATE;
static const uint8_t MAX_MISSING_SYNC = 8;
using collelator_t = Correlator;
using sync_word_t = SyncWord;
using callback_t = M17FrameDecoder::callback_t;
using diagnostic_callback_t = std::function<void(bool, float, float, float, int, int, float, int, int, int, int)>;
@ -50,9 +44,9 @@ struct MODEMM17_API M17Demodulator
DataCarrierDetect<SAMPLE_RATE, 500> dcd{2500, 4000, 1.0, 4.0};
ClockRecovery clock_recovery;
sync_word_t preamble_sync{{+3, -3, +3, -3, +3, -3, +3, -3}, 29.f};
sync_word_t lsf_sync{ {+3, +3, +3, +3, -3, -3, +3, -3}, 32.f, -31.f}; // LSF or STREAM (inverted)
sync_word_t packet_sync{ {+3, -3, +3, +3, -3, -3, -3, -3}, 31.f, -31.f}; // PACKET or BERT (inverted)
SyncWord preamble_sync{{+3, -3, +3, -3, +3, -3, +3, -3}, 29.f};
SyncWord lsf_sync{ {+3, +3, +3, +3, -3, -3, +3, -3}, 32.f, -31.f}; // LSF or STREAM (inverted)
SyncWord packet_sync{ {+3, -3, +3, +3, -3, -3, -3, -3}, 31.f, -31.f}; // PACKET or BERT (inverted)
FreqDevEstimator dev;
float idev;
@ -117,7 +111,7 @@ struct MODEMM17_API M17Demodulator
private:
static const std::array<float, 150> rrc_taps;
BaseFirFilter<rrc_taps.size()> demod_filter{rrc_taps};
collelator_t correlator;
Correlator correlator;
int16_t initializing_count_;
};

2
modemm17/M17FrameDecoder.h
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@ -39,7 +39,7 @@ QString dump(const std::array<C,N>& data, char header = 'D')
struct M17FrameDecoder
{
static constexpr size_t MAX_LICH_FRAGMENT = 5;
static const size_t MAX_LICH_FRAGMENT = 5;
M17Randomizer<368> derandomize_;
PolynomialInterleaver<45, 92, 368> interleaver_;

9
modemm17/M17Framer.h
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@ -13,11 +13,6 @@ namespace modemm17
template <size_t N = 368>
struct M17Framer
{
using buffer_t = std::array<int8_t, N>;
alignas(16) buffer_t buffer_;
size_t index_ = 0;
M17Framer()
{
reset();
@ -57,6 +52,10 @@ struct M17Framer
buffer_.fill(0);
index_ = 0;
}
private:
alignas(16) std::array<int8_t, N> buffer_;
size_t index_ = 0;
};
} // modemm17