Function libheif_sys::heif_context_encode_thumbnail

pub unsafe extern "C" fn heif_context_encode_thumbnail(
    arg1: *mut heif_context, 
    image: *const heif_image, 
    master_image_handle: *const heif_image_handle, 
    encoder: *mut heif_encoder, 
    options: *const heif_encoding_options, 
    bbox_size: c_int, 
    out_thumb_image_handle: *mut *mut heif_image_handle
) -> heif_error