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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: utility main for setting entropy encoding parameters
for lattice codebooks
********************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <errno.h>
#include "bookutil.h"
static int strrcmp_i(char *s,char *cmp){
return(strncmp(s+strlen(s)-strlen(cmp),cmp,strlen(cmp)));
}
/* This util takes a training-collected file listing codewords used in
LSP fitting, then generates new codeword lengths for maximally
efficient integer-bits entropy encoding.
command line:
latticetune book.vqh input.vqd [unused_entriesp]
latticetune produces book.vqh on stdout */
int main(int argc,char *argv[]){
codebook *b;
static_codebook *c;
long *lengths;
long *hits;
int entries=-1,dim=-1,guard=1;
FILE *in=NULL;
char *line,*name;
long j;
if(argv[1]==NULL){
fprintf(stderr,"Need a lattice codebook on the command line.\n");
exit(1);
}
if(argv[2]==NULL){
fprintf(stderr,"Need a codeword data file on the command line.\n");
exit(1);
}
if(argv[3]!=NULL)guard=0;
{
char *ptr;
char *filename=strdup(argv[1]);
b=codebook_load(filename);
c=(static_codebook *)(b->c);
ptr=strrchr(filename,'.');
if(ptr){
*ptr='\0';
name=strdup(filename);
}else{
name=strdup(filename);
}
}
if(c->maptype!=1){
fprintf(stderr,"Provided book is not a latticebook.\n");
exit(1);
}
entries=b->entries;
dim=b->dim;
hits=_ogg_malloc(entries*sizeof(long));
lengths=_ogg_calloc(entries,sizeof(long));
for(j=0;j<entries;j++)hits[j]=guard;
in=fopen(argv[2],"r");
if(!in){
fprintf(stderr,"Could not open input file %s\n",argv[2]);
exit(1);
}
if(!strrcmp_i(argv[0],"latticetune")){
long lines=0;
line=setup_line(in);
while(line){
long code;
lines++;
if(!(lines&0xfff))spinnit("codewords so far...",lines);
if(sscanf(line,"%ld",&code)==1)
hits[code]++;
line=setup_line(in);
}
}
/* now we simply count already collated by-entry data */
if(!strrcmp_i(argv[0],"res0tune") || !strrcmp_i(argv[0],"res1tune")){
line=setup_line(in);
while(line){
/* code:hits\n */
/* likely to have multiple listing for each code entry; must
accumulate */
char *pos=strchr(line,':');
if(pos){
long code=atol(line);
long val=atol(pos+1);
hits[code]+=val;
}
line=setup_line(in);
}
}
fclose(in);
/* build the codeword lengths */
build_tree_from_lengths0(entries,hits,lengths);
c->lengthlist=lengths;
write_codebook(stdout,name,c);
{
long bins=_book_maptype1_quantvals(c);
long i,k,base=c->lengthlist[0];
for(i=0;i<entries;i++)
if(c->lengthlist[i]>base)base=c->lengthlist[i];
for(j=0;j<entries;j++){
if(c->lengthlist[j]){
int indexdiv=1;
fprintf(stderr,"%4ld: ",j);
for(k=0;k<c->dim;k++){
int index= (j/indexdiv)%bins;
fprintf(stderr,"%+3.1f,", c->quantlist[index]*_float32_unpack(c->q_delta)+
_float32_unpack(c->q_min));
indexdiv*=bins;
}
fprintf(stderr,"\t|");
for(k=0;k<base-c->lengthlist[j];k++)fprintf(stderr,"*");
fprintf(stderr,"\n");
}
}
}
fprintf(stderr,"\r "
"\nDone.\n");
exit(0);
}
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