Jean-Michel Hautbois
88c69f8808
The Histogram constructor does not modify the data. Pass it a Span<const uint32_t> instead of a Span<uint32_t>. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
39 lines
821 B
C++
39 lines
821 B
C++
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (C) 2019, Raspberry Pi (Trading) Limited
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*
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* histogram.h - histogram calculation interface
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*/
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#pragma once
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#include <assert.h>
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#include <limits.h>
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#include <stdint.h>
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#include <vector>
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#include <libcamera/base/span.h>
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namespace libcamera {
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namespace ipa {
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class Histogram
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{
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public:
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Histogram(Span<const uint32_t> data);
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size_t bins() const { return cumulative_.size() - 1; }
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uint64_t total() const { return cumulative_[cumulative_.size() - 1]; }
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uint64_t cumulativeFrequency(double bin) const;
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double quantile(double q, uint32_t first = 0, uint32_t last = UINT_MAX) const;
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double interQuantileMean(double lowQuantile, double hiQuantile) const;
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private:
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std::vector<uint64_t> cumulative_;
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};
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} /* namespace ipa */
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} /* namespace libcamera */
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