1/******************************************************************** 2 * * 3 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * 4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * 5 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * 6 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * 7 * * 8 * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001 * 9 * by the Xiph.Org Foundation http://www.xiph.org/ * 10 * * 11 ******************************************************************** 12 13 function: generic euclidian distance metric for VQ codebooks 14 last mod: $Id: genericdata.c 16037 2009-05-26 21:10:58Z xiphmont $ 15 16 ********************************************************************/ 17 18#include <stdlib.h> 19#include <math.h> 20#include <stdio.h> 21#include "vqgen.h" 22#include "vqext.h" 23 24char *vqext_booktype="GENERICdata"; 25int vqext_aux=0; 26quant_meta q={0,0,0,0}; /* non sequence data; each scalar 27 independent */ 28 29void vqext_quantize(vqgen *v,quant_meta *q){ 30 vqgen_quantize(v,q); 31} 32 33float *vqext_weight(vqgen *v,float *p){ 34 /*noop*/ 35 return(p); 36} 37 38 /* candidate,actual */ 39float vqext_metric(vqgen *v,float *e, float *p){ 40 int i; 41 float acc=0.f; 42 for(i=0;i<v->elements;i++){ 43 float val=p[i]-e[i]; 44 acc+=val*val; 45 } 46 return sqrt(acc/v->elements); 47} 48 49void vqext_addpoint_adj(vqgen *v,float *b,int start,int dim,int cols,int num){ 50 vqgen_addpoint(v,b+start,NULL); 51} 52 53void vqext_preprocess(vqgen *v){ 54 /* noop */ 55} 56 57 58 59 60 61 62