pub unsafe extern "C" fn heif_context_add_grid_image(
ctx: *mut heif_context,
image_width: u32,
image_height: u32,
tile_columns: u32,
tile_rows: u32,
encoding_options: *const heif_encoding_options,
out_grid_image_handle: *mut *mut heif_image_handle,
) -> heif_error