/*! \file MultiScaleObj.h

	Copyright (C) 2014 杭州利珀科技有限公司.
  		
	Created by bang.jin at 2017/02/20.
*/

#ifndef __MultiScaleObj_h_
#define __MultiScaleObj_h_

#include <vector>
#include <opencv2/opencv.hpp>
#include <opencv2/opencv_modules.hpp>

using std::vector;
using namespace cv;

class MultiScaleObj;

class MultiScaleImageProc
{
public:
    virtual void operator()(const Mat& img, MultiScaleObj* pMSObj, void* pData) = 0;
};

class MultiScaleObj
{
public:
	MultiScaleObj(int level = 2, float scaleStep = 0.5);
	~MultiScaleObj();

    int getLevelNum() const { return mLevelNum; }
    void setLevelNum(int val) { mLevelNum = val; }

    int getLevel() const { return mLevel; }

    float getScaleStep() const { return mScaleStep; }
    void setScaleStep(float iVal) { mScaleStep = iVal; }

    int getMaxLevel() const { return getLevelNum() - 1; }
    int resetMaxLevel()
    {
        setLevel(getMaxLevel());
        return getLevel();
    }
    int downLevel()
    {
        mLevel--;
        return mLevel;
    }

    virtual void proc(void *pData) = 0;

protected:
    void setLevel(int val) { mLevel = val; }

    int mLevelNum;    
    int mLevel;
    
    float mScaleStep;

private:
};

class MultiScaleImage : public MultiScaleObj
{
public:
	MultiScaleImage();
	~MultiScaleImage();

    void setBaseLevel(const Mat& img);
    void genMultiScale();

    virtual void proc(void *pData);

    MultiScaleImageProc* getProc() const { return mpProc; }
    void setProc(MultiScaleImageProc* iVal) { mpProc = iVal; }

    Mat getImg(int level);

protected:
    vector<Mat> mMultiScaleImages;
    MultiScaleImageProc* mpProc;
private:
};

#endif // __MultiScaleObj_h_