Merge "Fix sample spacing in lens shading map saved to DNG" into pi-dev

#include <inttypes.h>

#include <algorithm>

#include <vector>

#include <math.h>

                                                   const float* lensShadingMap) {

    uint32_t activeAreaWidth = activeAreaRight - activeAreaLeft;

    uint32_t activeAreaHeight = activeAreaBottom - activeAreaTop;

    double spacingV = 1.0 / lsmHeight;

    double spacingH = 1.0 / lsmWidth;

    double spacingV = 1.0 / std::max(1u, lsmHeight - 1);

    double spacingH = 1.0 / std::max(1u, lsmWidth - 1);

    std::vector<float> redMapVector(lsmWidth * lsmHeight);

    float *redMap = redMapVector.data();