Function libheif_sys::heif_image_handle_get_metadata_type

pub unsafe extern "C" fn heif_image_handle_get_metadata_type(
    handle: *const heif_image_handle,
    metadata_id: heif_item_id
) -> *const c_char

Return a string indicating the type of the metadata, as specified in the HEIF file. Exif data will have the type string “Exif”. This string will be valid until the next call to a libheif function. You do not have to free this string.