/* SPDX-License-Identifier: BSD-2-Clause */ /* * Copyright (C) 2019, Raspberry Pi (Trading) Limited * * histogram.h - histogram calculation interface */ #pragma once #include <assert.h> #include <limits.h> #include <stdint.h> #include <vector> #include <libcamera/base/span.h> namespace libcamera { namespace ipa { class Histogram { public: Histogram(Span<uint32_t> data); size_t bins() const { return cumulative_.size() - 1; } uint64_t total() const { return cumulative_[cumulative_.size() - 1]; } uint64_t cumulativeFrequency(double bin) const; double quantile(double q, uint32_t first = 0, uint32_t last = UINT_MAX) const; double interQuantileMean(double lowQuantile, double hiQuantile) const; private: std::vector<uint64_t> cumulative_; }; } /* namespace ipa */ } /* namespace libcamera */