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M17 library code cleanup

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This commit is contained in:
f4exb 2022-07-20 06:11:14 +02:00
parent ac2a45ce88
commit f00cdc28c9
6 changed files with 13 additions and 15 deletions
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2
modemm17/Fsk4Demod.h
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@ -97,7 +97,7 @@ struct Fsk4Demod
dt = ideal_dt - (phase_estimate * (lock ? lock_gain : unlock_gain));
t += dt;
std::tuple<int, float> evm_result = symbol_evm(samples[1]);
symbol_evm(samples[1]);
int symbol;
float evm;
std::tie(symbol, evm) = symbol_evm(samples[1]);

8
modemm17/LinkSetupFrame.h
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@ -135,12 +135,12 @@ struct LinkSetupFrame
bool north = lat_int >= 0;
bool east = lon_int >= 0;
result[2] = (int) abs(lat_int);
lat_dec = abs(lat_frac) * 65536.0f;
result[2] = (int) std::abs(lat_int);
lat_dec = std::abs(lat_frac) * 65536.0f;
result[3] = lat_dec >> 8;
result[4] = lat_dec & 0xFF;
result[5] = (int) abs(lon_int);
lon_dec = abs(lon_frac) * 65536.0f;
result[5] = (int) std::abs(lon_int);
lon_dec = std::abs(lon_frac) * 65536.0f;
result[6] = lon_dec >> 8;
result[7] = lon_dec & 0xFF;
result[8] = (north ? 0 : 1) | ((east ? 0 : 1)<<1) | (1<<2);

2
modemm17/SlidingDFT.h
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@ -27,7 +27,7 @@ class SlidingDFT
static constexpr float kth = float(Frequency) / float(SampleRate);
// We'd like this to be static constexpr, but std::exp is not a constexpr.
const ComplexType coeff_;
ComplexType coeff_;
std::array<float, N> samples_;
ComplexType result_{0,0};
size_t index_ = 0;

8
modemm17/SymbolEvm.h
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@ -16,7 +16,7 @@ namespace modemm17
template <size_t N>
struct SymbolEvm
{
using filter_type = BaseIirFilter<float, N>;
using filter_type = BaseIirFilter<N>;
using symbol_t = int;
using result_type = std::tuple<symbol_t, float>;
@ -42,7 +42,7 @@ struct SymbolEvm
symbol_t symbol;
float evm;
sample = std::min(3.0, std::max(-3.0, sample));
sample = std::min(3.0f, std::max(-3.0f, sample));
if (sample > 2)
{
@ -65,7 +65,7 @@ struct SymbolEvm
evm = (sample + 3) * 0.333333;
}
if (erasure_limit_ and (abs(evm) > *erasure_limit_)) symbol = 0;
if (erasure_limit_ and (std::abs(evm) > erasure_limit_)) symbol = 0;
evm_ = filter_(evm);
@ -79,7 +79,7 @@ SymbolEvm<N> makeSymbolEvm(
float erasure_limit = 0.0f
)
{
return std::move(SymbolEvm<float, N>(std::move(filter), erasure_limit));
return std::move(SymbolEvm<N>(std::move(filter), erasure_limit));
}
} // modemm17

4
modemm17/Util.h
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@ -146,9 +146,7 @@ auto llr(float sample)
template <size_t M, typename T, size_t N, typename U, size_t IN>
auto depunctured(std::array<T, N> puncture_matrix, std::array<U, IN> in)
{
if (M % N != 0) {
return;
}
static_assert(M % N == 0, "M must be an integer multiple of N");
std::array<U, M> result;
size_t index = 0;

4
modemm17/Viterbi.h
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@ -94,7 +94,7 @@ constexpr auto makeCost(Trellis_ trellis)
template <typename Trellis_, size_t LLR_ = 2>
struct Viterbi
{
static_assert(LLR_ < 7); // Need to be < 7 to avoid overflow errors.
static_assert(LLR_ < 7, "Need to be < 7 to avoid overflow errors");
static constexpr size_t K = Trellis_::K;
static constexpr size_t k = Trellis_::k;
@ -162,7 +162,7 @@ struct Viterbi
template <size_t IN, size_t OUT>
size_t decode(std::array<int8_t, IN> const& in, std::array<uint8_t, OUT>& out)
{
static_assert(sizeof(history_) >= IN / 2);
static_assert(sizeof(history_) >= IN / 2, "Invalid size");
constexpr auto MAX_METRIC = std::numeric_limits<typename metrics_t::value_type>::max() / 2;