internal static extern AudioFileStatus AudioFileInitializeWithCallbacks(IntPtr userData, AudioFileReadCallback readCallback, AudioFileWriteCallback writeCallback, AudioFileGetSizeCallback getSizeCallback, AudioFileSetSizeCallback setSizeCallback, AudioFileType fileType, ref AudioStreamBasicDescription description, uint flags, out NativeAudioFileHandle handle);
internal static extern AudioFileStatus AudioFileOpenWithCallbacks(IntPtr userData, AudioFileReadCallback readCallback, AudioFileWriteCallback writeCallback, AudioFileGetSizeCallback getSizeCallback, AudioFileSetSizeCallback setSizeCallback, AudioFileType fileType, out NativeAudioFileHandle handle);