Function GDALCheckBandCount

gcore/gdal_misc.cpp:4792–4813

 */

int GDALCheckBandCount(int nBands, int bIsZeroAllowed)
{
    if (nBands < 0 || (!bIsZeroAllowed && nBands == 0))
    {
        CPLError(CE_Failure, CPLE_AppDefined, "Invalid band count : %d",
                 nBands);
        return FALSE;
    }
    const char *pszMaxBandCount =
        CPLGetConfigOption("GDAL_MAX_BAND_COUNT", "65536");
    int nMaxBands = std::clamp(atoi(pszMaxBandCount), 0, INT_MAX - 1);
    if (nBands > nMaxBands)
    {
        CPLError(CE_Failure, CPLE_AppDefined,
                 "Invalid band count : %d. Maximum allowed currently is %d. "
                 "Define GDAL_MAX_BAND_COUNT to a higher level if it is a "
                 "legitimate number.",
                 nBands, nMaxBands);
        return FALSE;
    }
    return TRUE;
}

CPL_C_END