--- a/misc/libtremor/tremor/ivorbiscodec.h	Thu Sep 20 23:04:10 2012 +0200
+++ b/misc/libtremor/tremor/ivorbiscodec.h	Fri Sep 21 00:50:04 2012 +0200
@@ -25,6 +25,9 @@
 
 #include "ogg.h"
 
+struct vorbis_dsp_state;
+typedef struct vorbis_dsp_state vorbis_dsp_state;
+
 typedef struct vorbis_info{
   int version;
   int channels;
@@ -53,80 +56,7 @@
   void *codec_setup;
 } vorbis_info;
 
-/* vorbis_dsp_state buffers the current vorbis audio
-   analysis/synthesis state.  The DSP state belongs to a specific
-   logical bitstream ****************************************************/
-typedef struct vorbis_dsp_state{
-  int analysisp;
-  vorbis_info *vi;
-
-  ogg_int32_t **pcm;
-  ogg_int32_t **pcmret;
-  int      pcm_storage;
-  int      pcm_current;
-  int      pcm_returned;
-
-  int  preextrapolate;
-  int  eofflag;
-
-  long lW;
-  long W;
-  long nW;
-  long centerW;
-
-  ogg_int64_t granulepos;
-  ogg_int64_t sequence;
-
-  void       *backend_state;
-} vorbis_dsp_state;
-
-typedef struct vorbis_block{
-  /* necessary stream state for linking to the framing abstraction */
-  ogg_int32_t  **pcm;       /* this is a pointer into local storage */ 
-  oggpack_buffer opb;
-  
-  long  lW;
-  long  W;
-  long  nW;
-  int   pcmend;
-  int   mode;
-
-  int         eofflag;
-  ogg_int64_t granulepos;
-  ogg_int64_t sequence;
-  vorbis_dsp_state *vd; /* For read-only access of configuration */
-
-  /* local storage to avoid remallocing; it's up to the mapping to
-     structure it */
-  void               *localstore;
-  long                localtop;
-  long                localalloc;
-  long                totaluse;
-  struct alloc_chain *reap;
-
-} vorbis_block;
-
-/* vorbis_block is a single block of data to be processed as part of
-the analysis/synthesis stream; it belongs to a specific logical
-bitstream, but is independant from other vorbis_blocks belonging to
-that logical bitstream. *************************************************/
-
-struct alloc_chain{
-  void *ptr;
-  struct alloc_chain *next;
-};
-
-/* vorbis_info contains all the setup information specific to the
-   specific compression/decompression mode in progress (eg,
-   psychoacoustic settings, channel setup, options, codebook
-   etc). vorbis_info and substructures are in backends.h.
-*********************************************************************/
-
-/* the comments are not part of vorbis_info so that vorbis_info can be
-   static storage */
 typedef struct vorbis_comment{
-  /* unlimited user comment fields.  libvorbis writes 'libvorbis'
-     whatever vendor is set to in encode */
   char **user_comments;
   int   *comment_lengths;
   int    comments;
@@ -135,18 +65,6 @@
 } vorbis_comment;
 
 
-/* libvorbis encodes in two abstraction layers; first we perform DSP
-   and produce a packet (see docs/analysis.txt).  The packet is then
-   coded into a framed OggSquish bitstream by the second layer (see
-   docs/framing.txt).  Decode is the reverse process; we sync/frame
-   the bitstream and extract individual packets, then decode the
-   packet back into PCM audio.
-
-   The extra framing/packetizing is used in streaming formats, such as
-   files.  Over the net (such as with UDP), the framing and
-   packetization aren't necessary as they're provided by the transport
-   and the streaming layer is not used */
-
 /* Vorbis PRIMITIVES: general ***************************************/
 
 extern void     vorbis_info_init(vorbis_info *vi);
@@ -160,22 +78,6 @@
 extern int      vorbis_comment_query_count(vorbis_comment *vc, char *tag);
 extern void     vorbis_comment_clear(vorbis_comment *vc);
 
-extern int      vorbis_block_init(vorbis_dsp_state *v, vorbis_block *vb);
-extern int      vorbis_block_clear(vorbis_block *vb);
-extern void     vorbis_dsp_clear(vorbis_dsp_state *v);
-
-/* Vorbis PRIMITIVES: synthesis layer *******************************/
-extern int      vorbis_synthesis_headerin(vorbis_info *vi,vorbis_comment *vc,
-					  ogg_packet *op);
-
-extern int      vorbis_synthesis_init(vorbis_dsp_state *v,vorbis_info *vi);
-extern int      vorbis_synthesis_restart(vorbis_dsp_state *v);
-extern int      vorbis_synthesis(vorbis_block *vb,ogg_packet *op,int decodep);
-extern int      vorbis_synthesis_blockin(vorbis_dsp_state *v,vorbis_block *vb);
-extern int      vorbis_synthesis_pcmout(vorbis_dsp_state *v,ogg_int32_t ***pcm);
-extern int      vorbis_synthesis_read(vorbis_dsp_state *v,int samples);
-extern long     vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op);
-
 /* Vorbis ERRORS and return codes ***********************************/
 
 #define OV_FALSE      -1