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https://github.com/cookiengineer/audacity
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92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
/********************************************************************
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* *
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* THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
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* *
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* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001 *
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* by the Xiph.Org Foundation http://www.xiph.org/ *
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* *
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********************************************************************
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function: function call to do simple data cascading
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last mod: $Id: cascade.c,v 1.4 2008-02-02 15:54:07 richardash1981 Exp $
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********************************************************************/
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/* this one outputs residue to stdout. */
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#include <stdlib.h>
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#include <unistd.h>
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#include <math.h>
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#include "bookutil.h"
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/* set up metrics */
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float count=0.f;
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void process_preprocess(codebook **bs,char *basename){
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}
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void process_postprocess(codebook **b,char *basename){
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fprintf(stderr,"Done. \n");
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}
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float process_one(codebook *b,float *a,int dim,int step,int addmul,
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float base){
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int j;
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if(b->c->q_sequencep){
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float temp;
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for(j=0;j<dim;j++){
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temp=a[j*step];
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a[j*step]-=base;
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}
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base=temp;
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}
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vorbis_book_besterror(b,a,step,addmul);
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return base;
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}
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void process_vector(codebook **bs,int *addmul,int inter,float *a,int n){
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int i,bi=0;
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int booknum=0;
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while(*bs){
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float base=0.f;
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codebook *b=*bs;
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int dim=b->dim;
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if(inter){
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for(i=0;i<n/dim;i++)
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base=process_one(b,a+i,dim,n/dim,addmul[bi],base);
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}else{
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for(i=0;i<=n-dim;i+=dim)
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base=process_one(b,a+i,dim,1,addmul[bi],base);
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}
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bs++;
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booknum++;
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bi++;
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}
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for(i=0;i<n;i++)
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fprintf(stdout,"%f, ",a[i]);
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fprintf(stdout,"\n");
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if((long)(count++)%100)spinnit("working.... lines: ",count);
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}
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void process_usage(void){
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fprintf(stderr,
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"usage: vqcascade [-i] +|*<codebook>.vqh [ +|*<codebook.vqh> ]... \n"
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" datafile.vqd [datafile.vqd]...\n\n"
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" data can be taken on stdin. residual error data sent to\n"
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" stdout.\n\n");
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}
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