ImageResampler.h

#pragma once

#include <utils/VideoMode.h>
#include <utils/PixelFormat.h>
#include <utils/Image.h>
#include <utils/ColorRgb.h>

class ImageResampler
{
public:
    ImageResampler();
    ~ImageResampler();

    void setHorizontalPixelDecimation(int decimator);

    void setVerticalPixelDecimation(int decimator);

    void setCropping(int cropLeft,
                     int cropRight,
                     int cropTop,
                     int cropBottom);

    void setVideoMode(VideoMode mode);

    void processImage(const uint8_t * data, int width, int height, int lineLength, PixelFormat pixelFormat, Image<ColorRgb> & outputImage) const;

private:
    static inline uint8_t clamp(int x);
    static void yuv2rgb(uint8_t y, uint8_t u, uint8_t v, uint8_t & r, uint8_t & g, uint8_t & b);

private:
    int _horizontalDecimation;
    int _verticalDecimation;
    int _cropLeft;
    int _cropRight;
    int _cropTop;
    int _cropBottom;
    VideoMode _videoMode;
};