1 /********************************************************************
3 * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE. *
4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
5 * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. *
6 * PLEASE READ THESE TERMS DISTRIBUTING. *
8 * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-1999 *
9 * by 1999 Monty <monty@xiph.org> and The XIPHOPHORUS Company *
10 * http://www.xiph.org/ *
12 ********************************************************************
14 function: utility main for building codebooks from training sets
15 author: Monty <xiphmont@mit.edu>
16 modifications by: Monty
17 last modification date: Dec 14 1999
19 ********************************************************************/
29 static int rline(FILE *in,FILE *out,char *line,int max,int pass){
30 while(fgets(line,160,in)){
32 if(pass)fprintf(out,"%s",line);
41 buildvq vq=file out=file quant=n
45 void setexit(int dummy){
46 fprintf(stderr,"\nexiting... please wait to finish this iteration\n");
50 int main(int argc,char *argv[]){
52 int entries=-1,dim=-1;
59 /* load the trained data */
60 if(!strncmp(*argv,"vq=",3)){
62 char filename[80],*ptr;
63 if(sscanf(*argv,"vq=%70s",filename)!=1){
64 fprintf(stderr,"Syntax error in argument '%s'\n",*argv);
68 in=fopen(filename,"r");
69 ptr=strrchr(filename,'-');
74 sprintf(ptr,"%d.vqi",num+1);
76 strcat(filename,"-0.vqi");
78 out=fopen(filename,"w");
80 fprintf(stderr,"Unable to open %s for writing\n",filename);
83 fprintf(out,"# OggVorbis VQ codebook trainer, intermediate file\n");
86 /* we wish to suck in a preexisting book and continue to train it */
89 rline(in,out,line,160,1);
90 if(sscanf(line,"%d %d %d",&entries,&dim,&met)!=3){
91 fprintf(stderr,"Syntax error reading book file\n");
95 metric=set_metric(met);
96 vqgen_init(&v,dim,entries,metric,0.);
99 /* entries, bias, points */
101 for(j=0;j<entries;j++){
103 rline(in,out,line,160,0);
104 sscanf(line,"%lf",&a);
110 for(j=0;j<entries;j++){
111 rline(in,out,line,160,0);
112 sscanf(line,"%lf",&a);
119 v.entries=0; /* hack to avoid reseeding */
121 for(k=0;k<dim && k<80;k++){
122 rline(in,out,line,160,0);
123 sscanf(line,"%lf",b+k);
126 vqgen_addpoint(&v,b);
135 /* set parameters if we're not loading a pre book */
136 if(!strncmp(*argv,"entries=",8)){
137 sscanf(*argv,"entries=%d",&entries);
139 if(!strncmp(*argv,"desired=",8)){
140 sscanf(*argv,"desired=%lf",&desired);
142 if(!strncmp(*argv,"dim=",4)){
143 sscanf(*argv,"dim=%d",&dim);
146 /* which error metric (0==euclidian distance default) */
147 if(!strncmp(*argv,"met=",4)){
148 sscanf(*argv,"met=%d",&met);
149 metric=set_metric(met);
152 if(!strncmp(*argv,"in=",3)){
157 if(sscanf(*argv,"in=%79[^,],%d",file,&start)!=2)goto syner;
159 fprintf(stderr,"vq= must preceed in= arguments\n");
163 if(dim==-1 || entries==-1){
164 fprintf(stderr,"Must specify dimensionality and entries before"
165 " first input file\n");
168 vqgen_init(&v,dim,entries,metric,0.);
174 fprintf(stderr,"Could not open input file %s\n",file);
177 fprintf(out,"# training file entry: %s\n",file);
179 while(rline(in,out,line,1024,1)){
181 int n=sscanf(line,"%lf %lf %lf %lf %lf %lf %lf %lf "
182 "%lf %lf %lf %lf %lf %lf %lf %lf",
183 b,b+1,b+2,b+3,b+4,b+5,b+6,b+7,b+8,b+9,b+10,b+11,b+12,b+13,
186 fprintf(stderr,"ran out of columns reading %s\n",file);
189 vqgen_addpoint(&v,b+start);
198 signal(SIGTERM,setexit);
199 signal(SIGINT,setexit);
201 for(i=0;i<iter && !exiting;i++){
202 if(vqgen_iterate(&v)<desired)break;
207 fprintf(out,"%d %d %d\n",entries,dim,met);
210 for(j=0;j<entries;j++)
212 fprintf(out,"%f\n",v.entrylist[i++]);
214 fprintf(out,"# biases---\n");
216 for(j=0;j<entries;j++)
217 fprintf(out,"%f\n",v.bias[i++]);
219 fprintf(out,"# points---\n");
221 for(j=0;j<v.points;j++)
222 for(k=0;k<dim && k<80;k++)
223 fprintf(out,"%f\n",v.pointlist[i++]);
229 fprintf(stderr,"Syntax error in argument '%s'\n",*argv);