Function pixScaleByIntSampling

deps/leptonica/src/scale1.c:1404–1422

! * \brief pixScaleByIntSampling() * * \param[in] pixs 1, 2, 4, 8, 16, 32 bpp * \param[in] factor integer subsampling * \return pixd, or NULL on error * * * Notes: * (1) Simple interface to pixScaleBySampling(), for * isotropic integer reduction. * (2) If %factor == 1, returns a copy. * */

 * </pre>
 */
PIX *
pixScaleByIntSampling(PIX     *pixs,
                      l_int32  factor)
{
l_float32  scale;

    PROCNAME("pixScaleByIntSampling");

    if (!pixs)
        return (PIX *)ERROR_PTR("pixs not defined", procName, NULL);
    if (factor <= 1) {
        if (factor < 1)
            L_ERROR("factor must be >= 1; returning a copy\n", procName);
        return pixCopy(NULL, pixs);
    }

    scale = 1. / (l_float32)factor;
    return pixScaleBySampling(pixs, scale, scale);
}


/*------------------------------------------------------------------*