Function flac_sys::FLAC__metadata_simple_iterator_get_application_id

pub unsafe extern "C" fn FLAC__metadata_simple_iterator_get_application_id(
    iterator: *mut FLAC__Metadata_SimpleIterator, 
    id: *mut FLAC__byte
) -> FLAC__bool

Get the application ID of the \c APPLICATION block at the current position. This avoids reading the actual block data which can save time for large blocks.

\param iterator A pointer to an existing initialized iterator. \param id A pointer to a buffer of at least \c 4 bytes where the ID will be stored. \assert \code iterator != NULL \endcode \code id != NULL \endcode \a iterator has been successfully initialized with FLAC__metadata_simple_iterator_init() \retval FLAC__bool \c true if the ID was successfully read, else \c false, in which case you should check FLAC__metadata_simple_iterator_status() to find out why. If the status is \c FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT, then the current metadata block is not an \c APPLICATION block. Otherwise if the status is \c FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR or \c FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR, an I/O error occurred and the iterator can no longer be used.