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author | Aki <please@ignore.pl> | 2021-10-01 23:46:47 +0200 |
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committer | Aki <please@ignore.pl> | 2021-10-01 23:46:47 +0200 |
commit | ddd76aa4e1571c8d5965709db5c3cd47a89c9a38 (patch) | |
tree | 4e07bfaebede6531a70984fdebc855bca52f394a /vorbis/vq/vqgen.h | |
parent | 3a507e08b1d4e5970b27401a7e6517570d529400 (diff) | |
parent | c2d2c3551501110fddd78674d5435bfaa70382a3 (diff) | |
download | starshatter-ddd76aa4e1571c8d5965709db5c3cd47a89c9a38.zip starshatter-ddd76aa4e1571c8d5965709db5c3cd47a89c9a38.tar.gz starshatter-ddd76aa4e1571c8d5965709db5c3cd47a89c9a38.tar.bz2 |
Project is now built with CMake
Diffstat (limited to 'vorbis/vq/vqgen.h')
-rw-r--r-- | vorbis/vq/vqgen.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/vorbis/vq/vqgen.h b/vorbis/vq/vqgen.h new file mode 100644 index 0000000..688379c --- /dev/null +++ b/vorbis/vq/vqgen.h @@ -0,0 +1,84 @@ +/******************************************************************** + * * + * 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 1994-2001 * + * by the Xiph.Org Foundation http://www.xiph.org/ * + * * + ******************************************************************** + + function: build a VQ codebook + + ********************************************************************/ + +#ifndef _VQGEN_H_ +#define _VQGEN_H_ + +typedef struct vqgen{ + int seeded; + int sorted; + + int it; + int elements; + + int aux; + float mindist; + int centroid; + + /* point cache */ + float *pointlist; + long points; + long allocated; + + /* entries */ + float *entrylist; + long *assigned; + float *bias; + long entries; + float *max; + + float (*metric_func) (struct vqgen *v,float *entry,float *point); + float *(*weight_func) (struct vqgen *v,float *point); + + FILE *asciipoints; +} vqgen; + +typedef struct { + long min; /* packed 24 bit float */ + long delta; /* packed 24 bit float */ + int quant; /* 0 < quant <= 16 */ + int sequencep; /* bitflag */ +} quant_meta; + +static inline float *_point(vqgen *v,long ptr){ + return v->pointlist+((v->elements+v->aux)*ptr); +} + +static inline float *_aux(vqgen *v,long ptr){ + return _point(v,ptr)+v->aux; +} + +static inline float *_now(vqgen *v,long ptr){ + return v->entrylist+(v->elements*ptr); +} + +extern void vqgen_init(vqgen *v, + int elements,int aux,int entries,float mindist, + float (*metric)(vqgen *,float *, float *), + float *(*weight)(vqgen *,float *),int centroid); +extern void vqgen_addpoint(vqgen *v, float *p,float *aux); + +extern float vqgen_iterate(vqgen *v,int biasp); +extern void vqgen_unquantize(vqgen *v,quant_meta *q); +extern void vqgen_quantize(vqgen *v,quant_meta *q); +extern void vqgen_cellmetric(vqgen *v); + +#endif + + + + + |