/*  ----------------------------------------------------------------	Speech Signal Processing Toolkit (SPTK): version 3.0			 SPTK Working Group		   Department of Computer Science		   Nagoya Institute of Technology				and    Interdisciplinary Graduate School of Science and Engineering		   Tokyo Institute of Technology		      Copyright (c) 1984-2000			All Rights Reserved.  Permission is hereby granted, free of charge, to use and  distribute this software and its documentation without  restriction, including without limitation the rights to use,  copy, modify, merge, publish, distribute, sublicense, and/or  sell copies of this work, and to permit persons to whom this  work is furnished to do so, subject to the following conditions:    1. The code must retain the above copyright notice, this list       of conditions and the following disclaimer.    2. Any modifications must be clearly marked as such.  NAGOYA INSTITUTE OF TECHNOLOGY, TOKYO INSITITUTE OF TECHNOLOGY,  SPTK WORKING GROUP, AND THE CONTRIBUTORS TO THIS WORK DISCLAIM  ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT  SHALL NAGOYA INSTITUTE OF TECHNOLOGY, TOKYO INSITITUTE OF  TECHNOLOGY, SPTK WORKING GROUP, NOR THE CONTRIBUTORS BE LIABLE  FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY  DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,  WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS  ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR  PERFORMANCE OF THIS SOFTWARE. ----------------------------------------------------------------*//*************************************************************************									**    	LBG Algorithm for Vector Qauntizer Design			**									**					1996. 4  K.Koishida		**									**	usage:								**		lbg [ options ] [ indexfile ] < stdin > stdout		**	options:							**		-l l      :  length of vector	     	[26]		**		-n n      :  order of vector	     	[25]		**		-t t      :  number of training vector 	[N/A]		**		-s s  	  :  initial codebook size   	[1]		**		-e e  	  :  final codebook size     	[256]		**		-f f  	  :  initial codebook filename 	[NULL]		**		(level 2)						**		-d d	  :  end condition		[0.0001]	**		-r r	  :  splitting factor		[0.0001]	**	infile:								**		training vector (stdin)					**		    x(0), x(1), ... x(t*l-1)				**	stdout:								**		trained codebook					**		    cb'(0), cb'(1), ... cb(l*e-1)			**	ifile:	(if s > 1)						**		initial codebook (cbfile) 				**		    cb(0), cb(1), ... cb(l*s-1)				**	indexfile:							**		VQ index of training vector (int)			**		    index(0), index(1), ... index(t-1)			**	notice:								**		codebook size (s and e) must be power of 2		**		-t option can be omitted, when input from redirect	**	require:							**		lbg(), vq()						**									*************************************************************************/static char *rcs_id = "$Id: lbg.c,v 1.3 2002/12/25 05:30:46 sako Exp $";/*  Standard C Libraries  */#include <stdio.h>#include <SPTK.h>#include <stdlib.h>#include <string.h>/*  Required Functions  */void lbg();int vq();/*  Default Values  */#define LENG		26#define TNUMBER		-1#define	ICBSIZE		1#define	ECBSIZE		256#define	DELTA		0.0001#define	END		0.0001#define	MAXVALUE	1e23#define abs(x)		( (x < 0) ? (-(x)) : (x) )/*  Command Name  */char	*cmnd;void usage(int status){    fprintf(stderr, "\n");    fprintf(stderr, " %s - LBG algorithm for vector quantizer design \n",cmnd);    fprintf(stderr, "\n");    fprintf(stderr, "  usage:\n");    fprintf(stderr, "       %s [ options ] [ ifile ] < stdin > stdout\n", cmnd);    fprintf(stderr, "  options:\n");    fprintf(stderr, "       -l l  : length of vector          [%d]\n", LENG);    fprintf(stderr, "       -n n  : order of vector           [%d]\n", LENG-1);    fprintf(stderr, "       -t t  : number of training vector [N/A]\n");    fprintf(stderr, "       -s s  : initial codebook size     [%d]\n", ICBSIZE);    fprintf(stderr, "       -e e  : final codebook size       [%d]\n", ECBSIZE);    fprintf(stderr, "       -f f  : initial codebook filename [NULL]\n");    fprintf(stderr, "       -h    : print this message\n");    fprintf(stderr, "     (level 2)\n");    fprintf(stderr, "       -d d  : end condition             [%g]\n", END);    fprintf(stderr, "       -r r  : splitting factor          [%g]\n", DELTA);    fprintf(stderr, "  stdin:\n");    fprintf(stderr, "       data sequence (float)\n");    fprintf(stderr, "  stdout:\n");    fprintf(stderr, "       codebook (float)\n");    fprintf(stderr, "  ifile:\n");    fprintf(stderr, "       index (int)\n");    fprintf(stderr, "  notice:\n");    fprintf(stderr, "       codebook size (s and e) must be power of 2\n");    fprintf(stderr, "       -t option can be omitted, when input from redirect\n");    fprintf(stderr, "\n");    exit(status);}void main(int argc, char **argv){    int l = LENG, icbsize = ICBSIZE, ecbsize = ECBSIZE, 	tnum = TNUMBER, ispipe, xsize, csize, i, j, *tindex;    FILE	     *fp = stdin, *fpi = NULL, *fpcb = NULL, *fpv;    double	     delta = DELTA, minerr = END, *x, *cb, *icb, atof();    register double  *p;        if ((cmnd = strrchr(argv[0], '/')) == NULL)	cmnd = argv[0];    else	cmnd++;    while (--argc)	if (**++argv == '-'){	    switch (*(*argv+1)) {	    case 'l':		l = atoi(*++argv);		--argc;		break;	    case 'n':		l = atoi(*++argv)+1;		--argc;		break;	    case 't':		tnum = atoi(*++argv);		--argc;		break;	    case 's':		icbsize = atoi(*++argv);		--argc;		break;	    case 'e':		ecbsize = atoi(*++argv);		--argc;		break;	    case 'd':		minerr = atof(*++argv);		--argc;		break;	    case 'r':		delta = atof(*++argv);		--argc;		break;	    case 'f':		fpcb = getfp(*++argv, "r");		--argc;		break;	    case 'h':		usage(0);	    default:		fprintf(stderr, "%s : Invalid option '%c' !\n", cmnd, *(*argv+1));		usage(1);	    }	}	else	    fpi = getfp(*argv, "w");    if(tnum == -1){	ispipe = fseek(fp,0L,2);	tnum = ftell(fp)/l/sizeof(float);	rewind(fp);	if(ispipe == -1){	    fprintf(stderr,"%s: -t option must be specified, when input via pipe!\n",cmnd);	    usage(1);	}    }	    xsize = tnum * l;    csize = ecbsize * l;        x = dgetmem(xsize);    cb = dgetmem(csize);	        if(freadf(x, sizeof(*x), xsize, fp) != xsize){	fprintf(stderr,"%s : Size error of training data !\n",cmnd);	exit(1);    }    if(icbsize == 1){	icb=dgetmem(l);	fillz(icb, sizeof(*icb), l);	for(i=0,p=x; i<tnum; i++)	    for(j=0; j<l; j++)		icb[j] += *p++;	for(j=0; j<l; j++)	    icb[j] /= (double) tnum;    }else{	icb=dgetmem(icbsize*l);	if(freadf(icb, sizeof(*icb), icbsize*l, fpcb) != icbsize*l){	    fprintf(stderr,"%s : Size error of initial codebook !\n",cmnd);	    exit(1);	}    }        lbg(x, l, tnum, icb, icbsize, cb, ecbsize, delta, minerr);	    fwritef(cb, sizeof(*cb), csize, stdout);	    if(fpi != NULL){	tindex = (int *)dgetmem(tnum);	for(i=0,p=x; i<tnum; i++,p+=l)	    tindex[i] = vq(p, cb, l, ecbsize);				fwrite(tindex, sizeof(*tindex), tnum, fpi);    }    exit(0);}