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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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