Thread Safety

• Only one thread at a time may enter a function that takes a given OggVorbis_File instance, even if the functions involved appear to be read-only.

• Multiple threads may enter libvorbisidec at a given time, so long as each thread's function calls are using different OggVorbis_File instances.

• Any one OggVorbis_File instance may be used safely from multiple threads so long as only one thread at a time is making calls using that instance.