diff options
Diffstat (limited to 'lib/tremor/codebook.h')
| -rw-r--r-- | lib/tremor/codebook.h | 106 |
1 files changed, 35 insertions, 71 deletions
diff --git a/lib/tremor/codebook.h b/lib/tremor/codebook.h index bb139426..a32f0f7a 100644 --- a/lib/tremor/codebook.h +++ b/lib/tremor/codebook.h @@ -1,12 +1,12 @@ /******************************************************************** * * - * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * + * THIS FILE IS PART OF THE TremorOggVorbis '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 * + * THE TremorOggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * * * ******************************************************************** @@ -18,82 +18,46 @@ #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 - */ -} static_codebook; +#include "tremor_ogg.h" typedef struct codebook{ - long dim; /* codebook dimensions (elements per vector) */ - long entries; /* codebook entries */ - long used_entries; /* populated codebook entries */ - - /* the below are ordered by bitreversed codeword and only used - entries are populated */ - int binarypoint; - ogg_int32_t *valuelist; /* list of dim*entries actual entry values */ - ogg_uint32_t *codelist; /* list of bitstream codewords for each entry */ - - int *dec_index; - char *dec_codelengths; - ogg_uint32_t *dec_firsttable; - int dec_firsttablen; - int dec_maxlength; - - 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 */ + long dim; /* codebook dimensions (elements per vector) */ + long entries; /* codebook entries */ + long used_entries; /* populated codebook entries */ + + int dec_maxlength; + void *dec_table; + int dec_nodeb; + int dec_leafw; + 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 */ + + tremor_ogg_int32_t q_min; + int q_minp; + tremor_ogg_int32_t q_del; + int q_delp; + int q_seq; + int q_bits; + int q_pack; + void *q_val; } codebook; -extern void vorbis_staticbook_destroy(static_codebook *b); -extern int vorbis_book_init_decode(codebook *dest,const static_codebook *source); - extern void vorbis_book_clear(codebook *b); -extern long _book_maptype1_quantvals(const static_codebook *b); - -extern static_codebook *vorbis_staticbook_unpack(oggpack_buffer *b); - -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, +extern int vorbis_book_unpack(tremor_oggpack_buffer *b,codebook *c); + +extern long vorbis_book_decode(codebook *book, tremor_oggpack_buffer *b); +extern long vorbis_book_decodevs_add(codebook *book, tremor_ogg_int32_t *a, + tremor_oggpack_buffer *b,int n,int point); +extern long vorbis_book_decodev_set(codebook *book, tremor_ogg_int32_t *a, + tremor_oggpack_buffer *b,int n,int point); +extern long vorbis_book_decodev_add(codebook *book, tremor_ogg_int32_t *a, + tremor_oggpack_buffer *b,int n,int point); +extern long vorbis_book_decodevv_add(codebook *book, tremor_ogg_int32_t **a, long off,int ch, - oggpack_buffer *b,int n,int point); + tremor_oggpack_buffer *b,int n,int point); extern int _ilog(unsigned int v); |