Function pixConvert1To4Cmap

deps/leptonica/src/pixconv.c:2201–2223

---------------------------------------------------------------------------* * Conversion from 1 bpp to 4 bpp * *---------------------------------------------------------------------------*/ ! * \brief pixConvert1To4Cmap() * * \param[in] pixs 1 bpp * \return pixd 4 bpp, cmapped * * * Notes: * (1) Input 0 is mapped to (255, 25

 * </pre>
 */
PIX *
pixConvert1To4Cmap(PIX  *pixs)
{
PIX      *pixd;
PIXCMAP  *cmap;

    PROCNAME("pixConvert1To4Cmap");

    if (!pixs)
        return (PIX *)ERROR_PTR("pixs not defined", procName, NULL);
    if (pixGetDepth(pixs) != 1)
        return (PIX *)ERROR_PTR("pixs not 1 bpp", procName, NULL);

    if ((pixd = pixConvert1To4(NULL, pixs, 0, 1)) == NULL)
        return (PIX *)ERROR_PTR("pixd not made", procName, NULL);
    cmap = pixcmapCreate(4);
    pixcmapAddColor(cmap, 255, 255, 255);
    pixcmapAddColor(cmap, 0, 0, 0);
    pixSetColormap(pixd, cmap);
    pixCopyInputFormat(pixd, pixs);

    return pixd;
}


/*!