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#ifndef IMAGE_INTERFACE_H
#define IMAGE_INTERFACE_H
#include <cmath>
#include <cstring>
#include <limits>
#include <vector>
class ImageInterface {
public:
ImageInterface() : _width(0), _height(0), _stride(0) {}
ImageInterface(size_t width, size_t height, size_t stride)
: _width(width), _height(height), _stride(stride) {}
virtual ~ImageInterface() {}
virtual const float* Data() const = 0;
bool Empty() const { return _width == 0 || _height == 0; }
size_t Width() const { return _width; }
size_t Height() const { return _height; }
size_t Stride() const { return _stride; }
float Maximum() const {
if (Empty()) return 0.0;
const float* data = Data();
float value = std::numeric_limits<float>::min();
for (size_t y = 0; y != _height; ++y) {
const float* row = &data[y * _stride];
for (size_t x = 0; x != _width; ++x) {
if (std::isfinite(row[x]) && value < row[x]) value = row[x];
}
}
return value;
}
float Minimum() const {
if (Empty()) return 0.0;
const float* data = Data();
float value = std::numeric_limits<float>::max();
for (size_t y = 0; y != _height; ++y) {
const float* row = &data[y * _stride];
for (size_t x = 0; x != _width; ++x) {
if (std::isfinite(row[x]) && value > row[x]) value = row[x];
}
}
return value;
}
private:
size_t _width;
size_t _height;
size_t _stride;
};
#endif
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