/* SPDX-License-Identifier: BSD-2-Clause */ /* * Copyright (C) 2019, Raspberry Pi (Trading) Limited * * histogram.cpp - histogram calculations */ #include #include #include "histogram.hpp" using namespace RPiController; uint64_t Histogram::CumulativeFreq(double bin) const { if (bin <= 0) return 0; else if (bin >= Bins()) return Total(); int b = (int)bin; return cumulative_[b] + (bin - b) * (cumulative_[b + 1] - cumulative_[b]); } double Histogram::Quantile(double q, int first, int last) const { if (first == -1) first = 0; if (last == -1) last = cumulative_.size() - 2; assert(first <= last); uint64_t items = q * Total(); while (first < last) // binary search to find the right bin { int middle = (first + last) / 2; if (cumulative_[middle + 1] > items) last = middle; // between first and middle else first = middle + 1; // after middle } assert(items >= cumulative_[first] && items <= cumulative_[last + 1]); double frac = cumulative_[first + 1] == cumulative_[first] ? 0 : (double)(items - cumulative_[first]) / (cumulative_[first + 1] - cumulative_[first]); return first + frac; } double Histogram::InterQuantileMean(double q_lo, double q_hi) const { assert(q_hi > q_lo); double p_lo = Quantile(q_lo); double p_hi = Quantile(q_hi, (int)p_lo); double sum_bin_freq = 0, cumul_freq = 0; for (double p_next = floor(p_lo) + 1.0; p_next <= ceil(p_hi); p_lo = p_next, p_next += 1.0) { int bin = floor(p_lo); double freq = (cumulative_[bin + 1] - cumulative_[bin]) * (std::min(p_next, p_hi) - p_lo); sum_bin_freq += bin * freq; cumul_freq += freq; } // add 0.5 to give an average for bin mid-points return sum_bin_freq / cumul_freq + 0.5; } ;id=f1cac536f40fca701aa3ba4fe19d2f326c8bcc8e'>diff
path: root/include/libcamera/request.h
blob: eded68318b7dbb3c2d16a5394503394b2dea0630 (plain) 
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * request.h - Capture request handling
 */
#ifndef __LIBCAMERA_REQUEST_H__
#define __LIBCAMERA_REQUEST_H__

#include <map>
#include <memory>
#include <stdint.h>
#include <unordered_set>

#include <libcamera/controls.h>
#include <libcamera/signal.h>

namespace libcamera {

class Camera;
class CameraControlValidator;
class FrameBuffer;
class Stream;

class Request
{
public:
	enum Status {
		RequestPending,
		RequestComplete,
		RequestCancelled,
	};

	Request(Camera *camera, uint64_t cookie = 0);
	Request(const Request &) = delete;
	Request &operator=(const Request &) = delete;
	~Request();

	ControlList &controls() { return *controls_; }
	ControlList &metadata() { return *metadata_; }
	const std::map<Stream *, FrameBuffer *> &buffers() const { return bufferMap_; }
	int addBuffer(Stream *stream, FrameBuffer *buffer);
	FrameBuffer *findBuffer(Stream *stream) const;

	uint64_t cookie() const { return cookie_; }
	Status status() const { return status_; }