Function ippiHistogramGetBufferSize 

pub unsafe extern "C" fn ippiHistogramGetBufferSize(
    dataType: i32,
    roiSize: IppiSize,
    nLevels: *const i32,
    numChannels: i32,
    uniform: i32,
    pSpecSize: *mut i32,
    pBufferSize: *mut i32,
) -> i32