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: utility functions for loading .vqh and .vqd files
15 last mod: $Id: bookutil.h,v 1.4 2000/02/21 01:12:54 xiphmont Exp $
17 ********************************************************************/
19 #ifndef _V_BOOKUTIL_H_
20 #define _V_BOOKUTIL_H_
25 #include "vorbis/codebook.h"
27 extern void codebook_unquantize(codebook *b);
28 extern char *get_line(FILE *in);
29 extern int get_line_value(FILE *in,double *value);
30 extern int get_next_value(FILE *in,double *value);
31 extern int get_next_ivalue(FILE *in,long *ivalue);
32 extern void reset_next_value(void);
33 extern int get_vector(codebook *b,FILE *in,int start,int num,double *a);
34 extern char *find_seek_to(FILE *in,char *s);
36 extern codebook *codebook_load(char *filename);
37 extern int codebook_entry(codebook *b,double *val);
39 extern void spinnit(char *s,int n);
40 extern long float24_pack(double val);
41 extern double float24_unpack(long val);
42 extern void build_tree_from_lengths(int vals, long *hist, long *lengths);