public static extern long vorbis_packet_blocksize(ref vorbis_info vi, ref ogg_packet op);
public static extern int vorbis_synthesis_init(ref vorbis_dsp_state v, ref vorbis_info vi);
public static extern int vorbis_commentheader_in(ref vorbis_info vi, ref vorbis_comment vc, ref ogg_packet op);
internal static extern void vorbis_info_clear(ref vorbis_info vi);
internal static extern void vorbis_info_blocksize(ref vorbis_info vi, short zo);
internal static extern void vorbis_info_init(ref vorbis_info vi);
public static extern int vorbis_synthesis_headerin(ref vorbis_info vi, ref vorbis_comment vc, ref ogg_packet op);