ComputeDeviceLedInfoSize(DeviceIntPtr dev,
                         unsigned int what, XkbSrvLedInfoPtr sli)
{
    int nNames, nMaps;
    register unsigned n, bit;

    if (sli == NULL)
        return 0;
    nNames = nMaps = 0;
    if ((what & XkbXI_IndicatorNamesMask) == 0)
        sli->namesPresent = 0;
    if ((what & XkbXI_IndicatorMapsMask) == 0)
        sli->mapsPresent = 0;

    for (n = 0, bit = 1; n < XkbNumIndicators; n++, bit <<= 1) {
        if (sli->names && sli->names[n] != None) {
            sli->namesPresent |= bit;
            nNames++;
        }
        if (sli->maps && XkbIM_InUse(&sli->maps[n])) {
            sli->mapsPresent |= bit;
            nMaps++;
        }
    }
    return (nNames * 4) + (nMaps * SIZEOF(xkbIndicatorMapWireDesc));
}
Unknown