Function HPDF_LoadRawImageFromMem 

pub unsafe extern "C" fn HPDF_LoadRawImageFromMem(
    pdf: HPDF_Doc,
    buf: *const HPDF_BYTE,
    width: HPDF_UINT,
    height: HPDF_UINT,
    color_space: HPDF_ColorSpace,
    bits_per_component: HPDF_UINT,
) -> HPDF_Image