1 /********************************************************************
3 * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE. *
4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
5 * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. *
6 * PLEASE READ THESE TERMS DISTRIBUTING. *
8 * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000 *
9 * by Monty <monty@xiph.org> and The XIPHOPHORUS Company *
10 * http://www.xiph.org/ *
12 ********************************************************************
14 function: basic shared codebook operations
15 last mod: $Id: sharedbook.h,v 1.3 2000/10/12 03:12:54 xiphmont Exp $
17 ********************************************************************/
19 #ifndef _V_INT_SHCODEBOOK_H_
20 #define _V_INT_SHCODEBOOK_H_
22 #include "vorbis/codebook.h"
24 extern void vorbis_staticbook_clear(static_codebook *b);
25 extern int vorbis_book_init_encode(codebook *dest,const static_codebook *source);
26 extern int vorbis_book_init_decode(codebook *dest,const static_codebook *source);
27 extern void vorbis_book_clear(codebook *b);
29 extern float *_book_unquantize(const static_codebook *b);
30 extern float *_book_logdist(const static_codebook *b,float *vals);
31 extern float _float32_unpack(long val);
32 extern long _float32_pack(float val);
33 extern int _best(codebook *book, float *a, int step);
34 extern int _ilog(unsigned int v);
35 extern long _book_maptype1_quantvals(const static_codebook *b);
37 extern int vorbis_book_besterror(codebook *book,float *a,int step,int addmul);
38 extern long vorbis_book_codeword(codebook *book,int entry);
39 extern long vorbis_book_codelen(codebook *book,int entry);