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Diffstat (limited to 'vorbis/lib/codebook.h')
| -rw-r--r-- | vorbis/lib/codebook.h | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/vorbis/lib/codebook.h b/vorbis/lib/codebook.h deleted file mode 100644 index 08440c6..0000000 --- a/vorbis/lib/codebook.h +++ /dev/null @@ -1,117 +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 1994-2015 * - * by the Xiph.Org Foundation http://www.xiph.org/ * - * * - ******************************************************************** - - function: basic shared codebook operations - - ********************************************************************/ - -#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 */ - char *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 - */ - int allocedp; -} static_codebook; - -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; - - /* The current encoder uses only centered, integer-only lattice books. */ - int quantvals; - int minval; - int delta; -} codebook; - -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 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 static_codebook *vorbis_staticbook_unpack(oggpack_buffer *b); - -extern int vorbis_book_encode(codebook *book, int a, oggpack_buffer *b); - -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 |