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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2022, Raspberry Pi Ltd
*
* region_stats.h - Raspberry Pi region based statistics container
*/
#pragma once
#include <array>
#include <stdint.h>
#include <vector>
#include <libcamera/geometry.h>
namespace RPiController {
template<typename T>
class RegionStats
{
public:
struct Region {
T val;
uint32_t counted;
uint32_t uncounted;
};
RegionStats()
: size_({}), numFloating_(0), default_({})
{
}
void init(const libcamera::Size &size, unsigned int numFloating = 0)
{
size_ = size;
numFloating_ = numFloating;
regions_.clear();
regions_.resize(size_.width * size_.height + numFloating_);
}
void init(unsigned int num)
{
size_ = libcamera::Size(num, 1);
numFloating_ = 0;
regions_.clear();
regions_.resize(num);
}
unsigned int numRegions() const
{
return size_.width * size_.height;
}
unsigned int numFloatingRegions() const
{
return numFloating_;
}
libcamera::Size size() const
{
return size_;
}
void set(unsigned int index, const Region ®ion)
{
if (index >= numRegions())
return;
set_(index, region);
}
void set(const libcamera::Point &pos, const Region ®ion)
{
set(pos.y * size_.width + pos.x, region);
}
void setFloating(unsigned int index, const Region ®ion)
{
if (index >= numFloatingRegions())
return;
set(numRegions() + index, region);
}
const Region &get(unsigned int index) const
{
if (index >= numRegions())
return default_;
return get_(index);
}
const T &get(const libcamera::Point &pos) const
{
return get(pos.y * size_.width + pos.x);
}
const T &getFloating(unsigned int index) const
{
if (index >= numFloatingRegions())
return default_;
return get_(numRegions() + index);
}
typename std::vector<Region>::iterator begin() { return regions_.begin(); }
typename std::vector<Region>::iterator end() { return regions_.end(); }
typename std::vector<Region>::const_iterator begin() const { return regions_.begin(); }
typename std::vector<Region>::const_iterator end() const { return regions_.end(); }
private:
void set_(unsigned int index, const Region ®ion)
{
regions_[index] = region;
}
const Region &get_(unsigned int index) const
{
return regions_[index];
}
libcamera::Size size_;
unsigned int numFloating_;
std::vector<Region> regions_;
Region default_;
};
} /* namespace RPiController */
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