void FilterLed::GetMinMax ( const int  offset, uint8_t *  min, uint8_t *  max  ) const

private

Definition at line 210 of file FilterLed.cc.

{
    *min = fImg[0];
    *max = fImg[0];

    uint8_t *s = (uint8_t*)fImg;
    const uint8_t *e0 = s+fW*fH;

    //
    // calculate mean value (speed optimized)
    //
    while (s<e0)
    {
        const uint8_t *e = s+fH-offset;
        s += offset;

        while (s<e)
        {
            if (*s>*max)
            {
                *max = *s;
                if (*max-*min==255)
                    return;
            }
            if (*s<*min)
            {
                *min = *s;
                if (*max-*min==255)
                    return;
            }
            s++;
        }
        s+=offset;
    }
}