| /******************************************************************** |
| * * |
| * 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 |