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25 lines
689 B
C++
25 lines
689 B
C++
#include "tools/beatutils.h"
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#include <numeric>
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#include <iostream>
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auto beat_utils::calculateBeatRateInfo(const std::vector<microsec>& approximate_deltas) -> BeatInfo
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{
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if (approximate_deltas.empty())
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return {};
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const microsec sum = std::accumulate(approximate_deltas.begin(), approximate_deltas.end(), 0);
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const std::size_t amount = approximate_deltas.size();
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long double average = static_cast<long double>(sum)
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/ static_cast<long double>(amount);
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const int bpm = static_cast<int>(60000000. / average);
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return BeatInfo
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{
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bpm,
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static_cast<microsec>(1. / static_cast<long double>(bpm) * 60000000.)
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};
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}
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