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Diffstat (limited to 'lib/codebook.h')
| -rw-r--r-- | lib/codebook.h | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/lib/codebook.h b/lib/codebook.h deleted file mode 100644 index 58005466..00000000 --- a/lib/codebook.h +++ /dev/null @@ -1,162 +0,0 @@ -/******************************************************************** - * * - * THIS FILE IS PART OF THE OggVorbis SOFTWARE 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 SOURCE CODE IS (C) COPYRIGHT 1994-2002 * - * by the XIPHOPHORUS Company http://www.xiph.org/ * - * * - ******************************************************************** - - function: basic shared codebook operations - last mod: $Id: codebook.h,v 1.12 2002/01/21 20:51:28 xiphmont Exp $ - - ********************************************************************/ - -#ifndef _V_CODEBOOK_H_ -#define _V_CODEBOOK_H_ - -#include <ogg/ogg.h> - -/* This structure encapsulates huffman and VQ style encoding books; it - doesn't do anything specific to either. - - valuelist/quantlist are nonNULL (and q_* significant) only if - there's entry->value mapping to be done. - - If encode-side mapping must be done (and thus the entry needs to be - hunted), the auxiliary encode pointer will point to a decision - tree. This is true of both VQ and huffman, but is mostly useful - with VQ. - -*/ - -typedef struct static_codebook{ - long dim; /* codebook dimensions (elements per vector) */ - long entries; /* codebook entries */ - long *lengthlist; /* codeword lengths in bits */ - - /* mapping ***************************************************************/ - int maptype; /* 0=none - 1=implicitly populated values from map column - 2=listed arbitrary values */ - - /* The below does a linear, single monotonic sequence mapping. */ - long q_min; /* packed 32 bit float; quant value 0 maps to minval */ - long q_delta; /* packed 32 bit float; val 1 - val 0 == delta */ - int q_quant; /* bits: 0 < quant <= 16 */ - int q_sequencep; /* bitflag */ - - long *quantlist; /* map == 1: (int)(entries^(1/dim)) element column map - map == 2: list of dim*entries quantized entry vals - */ - - /* encode helpers ********************************************************/ - struct encode_aux_nearestmatch *nearest_tree; - struct encode_aux_threshmatch *thresh_tree; - struct encode_aux_pigeonhole *pigeon_tree; - - int allocedp; -} static_codebook; - -/* this structures an arbitrary trained book to quickly find the - nearest cell match */ -typedef struct encode_aux_nearestmatch{ - /* pre-calculated partitioning tree */ - long *ptr0; - long *ptr1; - - long *p; /* decision points (each is an entry) */ - long *q; /* decision points (each is an entry) */ - long aux; /* number of tree entries */ - long alloc; -} encode_aux_nearestmatch; - -/* assumes a maptype of 1; encode side only, so that's OK */ -typedef struct encode_aux_threshmatch{ - float *quantthresh; - long *quantmap; - int quantvals; - int threshvals; -} encode_aux_threshmatch; - -typedef struct encode_aux_pigeonhole{ - float min; - float del; - - int mapentries; - int quantvals; - long *pigeonmap; - - long fittotal; - long *fitlist; - long *fitmap; - long *fitlength; -} encode_aux_pigeonhole; - -typedef struct codebook{ - long dim; /* codebook dimensions (elements per vector) */ - long entries; /* codebook entries */ - long used_entries; /* populated codebook entries */ - const static_codebook *c; - - /* for encode, the below are entry-ordered, fully populated */ - /* for decode, the below are ordered by bitreversed codeword and only - used entries are populated */ - float *valuelist; /* list of dim*entries actual entry values */ - ogg_uint32_t *codelist; /* list of bitstream codewords for each entry */ - - int *dec_index; /* only used if sparseness collapsed */ - char *dec_codelengths; - ogg_uint32_t *dec_firsttable; - int dec_firsttablen; - int dec_maxlength; - -} codebook; - -extern void vorbis_staticbook_clear(static_codebook *b); -extern void vorbis_staticbook_destroy(static_codebook *b); -extern int vorbis_book_init_encode(codebook *dest,const static_codebook *source); -extern int vorbis_book_init_decode(codebook *dest,const static_codebook *source); -extern void vorbis_book_clear(codebook *b); - -extern float *_book_unquantize(const static_codebook *b,int n,int *map); -extern float *_book_logdist(const static_codebook *b,float *vals); -extern float _float32_unpack(long val); -extern long _float32_pack(float val); -extern int _best(codebook *book, float *a, int step); -extern int _ilog(unsigned int v); -extern long _book_maptype1_quantvals(const static_codebook *b); - -extern int vorbis_book_besterror(codebook *book,float *a,int step,int addmul); -extern long vorbis_book_codeword(codebook *book,int entry); -extern long vorbis_book_codelen(codebook *book,int entry); - - - -extern int vorbis_staticbook_pack(const static_codebook *c,oggpack_buffer *b); -extern int vorbis_staticbook_unpack(oggpack_buffer *b,static_codebook *c); - -extern int vorbis_book_encode(codebook *book, int a, oggpack_buffer *b); -extern int vorbis_book_errorv(codebook *book, float *a); -extern int vorbis_book_encodev(codebook *book, int best,float *a, - oggpack_buffer *b); -extern int vorbis_book_encodevs(codebook *book, float *a, oggpack_buffer *b, - int step,int stagetype); - -extern long vorbis_book_decode(codebook *book, oggpack_buffer *b); -extern long vorbis_book_decodevs_add(codebook *book, float *a, - oggpack_buffer *b,int n); -extern long vorbis_book_decodev_set(codebook *book, float *a, - oggpack_buffer *b,int n); -extern long vorbis_book_decodev_add(codebook *book, float *a, - oggpack_buffer *b,int n); -extern long vorbis_book_decodevv_add(codebook *book, float **a, - long off,int ch, - oggpack_buffer *b,int n); - - - -#endif |