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/********************************************************************
* *
* 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: generic euclidian distance metric for VQ codebooks
last mod: $Id: genericdata.c,v 1.4 2008-02-02 15:54:08 richardash1981 Exp $
********************************************************************/
#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#include "vqgen.h"
#include "vqext.h"
char *vqext_booktype="GENERICdata";
int vqext_aux=0;
quant_meta q={0,0,0,0}; /* non sequence data; each scalar
independent */
void vqext_quantize(vqgen *v,quant_meta *q){
vqgen_quantize(v,q);
}
float *vqext_weight(vqgen *v,float *p){
/*noop*/
return(p);
}
/* candidate,actual */
float vqext_metric(vqgen *v,float *e, float *p){
int i;
float acc=0.f;
for(i=0;i<v->elements;i++){
float val=p[i]-e[i];
acc+=val*val;
}
return sqrt(acc/v->elements);
}
void vqext_addpoint_adj(vqgen *v,float *b,int start,int dim,int cols,int num){
vqgen_addpoint(v,b+start,NULL);
}
void vqext_preprocess(vqgen *v){
/* noop */
}
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