Function GDALComputeBandStats 

pub unsafe extern "C" fn GDALComputeBandStats(
    hBand: GDALRasterBandH,
    nSampleStep: c_int,
    pdfMean: *mut f64,
    pdfStdDev: *mut f64,
    pfnProgress: GDALProgressFunc,
    pProgressData: *mut c_void,
) -> Type