include/FCam/AutoFocus.h

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#ifndef FCAM_AUTOFOCUS_H
#define FCAM_AUTOFOCUS_H

#include <vector>
#include "Frame.h"


namespace FCam {

    class Lens;

    class AutoFocus {
      public:
        AutoFocus(FCam::Lens *l, FCam::Rect r = FCam::Rect());

         void startSweep();

        void update(const FCam::Frame &f);

        bool focused() {return state == FOCUSED;} 

        bool idle() {return state == FOCUSED || state == IDLE;}

        void setTarget(Rect r) {rect = r;}

      private:
        Lens *lens;

        struct Stats {
            float position;
            int sharpness;
        };
        std::vector<Stats> stats;
        enum {IDLE = 0, HOMING, SWEEPING, SETTING, FOCUSED} state;

        Rect rect;
    };

}

#endif