/********************************************************************
* *
* THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
- * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
- * THE GNU LESSER/LIBRARY PUBLIC LICENSE, WHICH IS INCLUDED WITH *
- * THIS SOURCE. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * 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 1994-2000 *
- * by Monty <monty@xiph.org> and the XIPHOPHORUS Company *
- * http://www.xiph.org/ *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001 *
+ * by the Xiph.Org Foundation https://xiph.org/ *
* *
********************************************************************
function: function calls to collect codebook metrics
- last mod: $Id: metrics.c,v 1.12 2000/12/21 21:04:49 xiphmont Exp $
********************************************************************/
/* collect the following metrics:
mean and mean squared amplitude
- mean and mean squared error
+ mean and mean squared error
mean and mean squared error (per sample) by entry
worst case fit by entry
entry cell size
total bits
total samples
(average bits per sample)*/
-
+
/* set up metrics */
void process_preprocess(codebook **bs,char *basename){
int i;
while(bs[books])books++;
-
+
if(books){
histogram=_ogg_calloc(books,sizeof(float *));
histogram_error=_ogg_calloc(books,sizeof(float *));
if(c->c->lengthlist[j]>0){
float localmin=-1.;
for(k=0;k<c->c->entries;k++){
- if(c->c->lengthlist[k]>0){
- float this=_dist(c->c->dim,_now(c,j),_now(c,k));
- if(j!=k &&
- (localmin==-1 || this<localmin))
- localmin=this;
- }
+ if(c->c->lengthlist[k]>0){
+ float this=_dist(c->c->dim,_now(c,j),_now(c,k));
+ if(j!=k &&
+ (localmin==-1 || this<localmin))
+ localmin=this;
+ }
}
-
+
if(min==-1 || localmin<min)min=localmin;
if(max==-1 || localmin>max)max=localmin;
mean+=sqrt(localmin);
total++;
}
}
-
+
fprintf(stderr,"\tminimum cell spacing (closest side): %g\n",sqrt(min));
fprintf(stderr,"\tmaximum cell spacing (closest side): %g\n",sqrt(max));
fprintf(stderr,"\tmean closest side spacing: %g\n",mean/total);
char *buffer=alloca(strlen(basename)+80);
fprintf(stderr,"Done. Processed %ld data points:\n\n",
- (long)count);
+ (long)count);
fprintf(stderr,"Global statistics:******************\n\n");
fprintf(stderr,"\taverage bits per sample: %g\n\n",bits/count);
fprintf(stderr,"\tmean sample amplitude: %g\n",
- meanamplitude_acc/count);
+ meanamplitude_acc/count);
fprintf(stderr,"\tmean squared sample amplitude: %g\n\n",
- sqrt(meanamplitudesq_acc/count));
+ sqrt(meanamplitudesq_acc/count));
fprintf(stderr,"\tmean code error: %g\n",
- meanerror_acc/count);
+ meanerror_acc/count);
fprintf(stderr,"\tmean squared code error: %g\n\n",
- sqrt(meanerrorsq_acc/count));
+ sqrt(meanerrorsq_acc/count));
for(book=0;book<books;book++){
FILE *out;
fprintf(stderr,"Could not open file %s for writing\n",buffer);
exit(1);
}
-
+
for(i=0;i<n;i++){
for(k=0;k<dim;k++){
- fprintf(out,"%d, %g, %g\n",
- i*dim+k,(b->valuelist+i*dim)[k],
- sqrt((histogram_errorsq[book]+i*dim)[k]/histogram[book][i]));
+ fprintf(out,"%d, %g, %g\n",
+ i*dim+k,(b->valuelist+i*dim)[k],
+ sqrt((histogram_errorsq[book]+i*dim)[k]/histogram[book][i]));
}
}
fclose(out);
-
+
sprintf(buffer,"%s-%d-me.m",basename,book);
out=fopen(buffer,"w");
if(!out){
fprintf(stderr,"Could not open file %s for writing\n",buffer);
exit(1);
}
-
+
for(i=0;i<n;i++){
for(k=0;k<dim;k++){
- fprintf(out,"%d, %g, %g\n",
- i*dim+k,(b->valuelist+i*dim)[k],
- (histogram_error[book]+i*dim)[k]/histogram[book][i]);
+ fprintf(out,"%d, %g, %g\n",
+ i*dim+k,(b->valuelist+i*dim)[k],
+ (histogram_error[book]+i*dim)[k]/histogram[book][i]);
}
}
fclose(out);
fprintf(stderr,"Could not open file %s for writing\n",buffer);
exit(1);
}
-
+
for(i=0;i<n;i++){
for(k=0;k<dim;k++){
- fprintf(out,"%d, %g, %g, %g\n",
- i*dim+k,(b->valuelist+i*dim)[k],
- (b->valuelist+i*dim)[k]+(histogram_lo[book]+i*dim)[k],
- (b->valuelist+i*dim)[k]+(histogram_hi[book]+i*dim)[k]);
+ fprintf(out,"%d, %g, %g, %g\n",
+ i*dim+k,(b->valuelist+i*dim)[k],
+ (b->valuelist+i*dim)[k]+(histogram_lo[book]+i*dim)[k],
+ (b->valuelist+i*dim)[k]+(histogram_hi[book]+i*dim)[k]);
}
}
fclose(out);
}
float process_one(codebook *b,int book,float *a,int dim,int step,int addmul,
- float base){
+ float base){
int j,entry;
float amplitude=0.f;
fprintf(stderr,"Internal error: _best returned -1.\n");
exit(1);
}
-
- histogram[book][entry]++;
+
+ histogram[book][entry]++;
bits+=vorbis_book_codelen(b,entry);
-
+
for(j=0;j<dim;j++){
float error=a[j*step];
if(inter){
for(i=0;i<n/dim;i++)
- base=process_one(b,bi,a+i,dim,n/dim,addmul[bi],base);
+ base=process_one(b,bi,a+i,dim,n/dim,addmul[bi],base);
}else{
for(i=0;i<=n-dim;i+=dim)
- base=process_one(b,bi,a+i,dim,1,addmul[bi],base);
+ base=process_one(b,bi,a+i,dim,1,addmul[bi],base);
}
}
-
+
if((long)(count)%100)spinnit("working.... samples: ",count);
}
void process_usage(void){
fprintf(stderr,
- "usage: vqmetrics [-i] +|*<codebook>.vqh [ +|*<codebook.vqh> ]... \n"
- " datafile.vqd [datafile.vqd]...\n\n"
- " data can be taken on stdin. -i indicates interleaved coding.\n"
- " Output goes to output files:\n"
- " basename-me.m: gnuplot: mean error by entry value\n"
- " basename-mse.m: gnuplot: mean square error by entry value\n"
- " basename-worst.m: gnuplot: worst error by entry value\n"
- " basename-distance.m: gnuplot file showing distance probability\n"
- "\n");
+ "usage: vqmetrics [-i] +|*<codebook>.vqh [ +|*<codebook.vqh> ]... \n"
+ " datafile.vqd [datafile.vqd]...\n\n"
+ " data can be taken on stdin. -i indicates interleaved coding.\n"
+ " Output goes to output files:\n"
+ " basename-me.m: gnuplot: mean error by entry value\n"
+ " basename-mse.m: gnuplot: mean square error by entry value\n"
+ " basename-worst.m: gnuplot: worst error by entry value\n"
+ " basename-distance.m: gnuplot file showing distance probability\n"
+ "\n");
}
projects / platform / upstream / libvorbis.git / blobdiff