Check a Vorbis comment entry value to see if it conforms to the Vorbis
comment specification.
Vorbis comment values must be valid UTF-8 sequences.
\param value A string to be checked.
\param length A the length of \a value in bytes. May be
\c (uint)(-1) to indicate that \a value is a plain
UTF-8 NUL-terminated string.
\assert
\code value != NULL \endcode
\retval FLAC__bool
\c false if entry name is illegal, else \c true.
Check a Vorbis comment entry value to see if it conforms to the Vorbis comment specification.
Vorbis comment values must be valid UTF-8 sequences.
\param value A string to be checked. \param length A the length of \a value in bytes. May be \c (uint)(-1) to indicate that \a value is a plain UTF-8 NUL-terminated string. \assert \code value != NULL \endcode \retval FLAC__bool \c false if entry name is illegal, else \c true.