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/********************************************************************
* *
* THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. *
* *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 *
* BY THE Xiph.Org FOUNDATION http://www.xiph.org/ *
* *
********************************************************************
function: basic shared codebook operations
********************************************************************/
#ifndef _V_CODEBOOK_H_
#define _V_CODEBOOK_H_
#include "ogg.h"
typedef struct codebook{
/* Top 15 used in ARM code */
int dec_maxlength;
void *dec_table;
int dec_method;
int dec_type; /* 0 = entry number
1 = packed vector of values
2 = packed vector of column offsets, maptype 1
3 = scalar offset into value array, maptype 2 */
int q_bits;
long dim; /* codebook dimensions (elements per vector) */
int q_delp;
int q_minp;
ogg_int32_t q_del;
ogg_int32_t q_min;
int q_seq;
int q_pack;
void *q_val;
long used_entries; /* populated codebook entries */
ogg_int32_t *dec_buf;
/* C only */
int dec_nodeb;
int dec_leafw;
long entries; /* codebook entries */
} codebook;
extern void vorbis_book_clear(codebook *b);
extern int vorbis_book_unpack(oggpack_buffer *b,codebook *c);
extern long vorbis_book_decode(codebook *book, oggpack_buffer *b);
extern long vorbis_book_decodevs_add(codebook *book, ogg_int32_t *a,
oggpack_buffer *b,int n,int point);
extern long vorbis_book_decodev_set(codebook *book, ogg_int32_t *a,
oggpack_buffer *b,int n,int point);
extern long vorbis_book_decodev_add(codebook *book, ogg_int32_t *a,
oggpack_buffer *b,int n,int point);
extern long vorbis_book_decodevv_add(codebook *book, ogg_int32_t **a,
long off,int ch,
oggpack_buffer *b,int n,int point);
extern int _ilog(unsigned int v);
#endif
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