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lpc_export.c

/*  
    lpc_export.c

    Copyright (C) 1995 John ffitch

    This file is part of Csound.

    Csound is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    Csound is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Csound; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
/* ***************************************************************** */
/* ******** Program to export lpanal files in tabular format. ****** */
/* ***************************************************************** */

/* ***************************************************************** */
/* John ffitch 1995 Jun 25                                           */
/* ***************************************************************** */
     
#include <stdio.h>
#include <stdlib.h>
#include "lpc.h"

void usage(void);

int main(int argc, char **argv)
{
    FILE *inf;
    FILE *outf;
    LPHEADER hdr;
    int i, j;
    char *str;
    float *coef;

    if (argc!= 3)
      usage();
    inf = fopen(argv[1], "rb");
    if (inf == NULL) {
      fprintf(stderr, "Cannot open input file %s\n", argv[1]);
      exit(1);
    }
    outf = fopen(argv[2], "w");
    if (inf == NULL) {
      fprintf(stderr, "Cannot open output file %s\n", argv[2]);
      exit(1);
    }
    if (fread(&hdr, sizeof(LPHEADER)-4, 1, inf) != 1 ||
      hdr.lpmagic != LP_MAGIC) {
      fprintf(stderr, "Failed to read LPC header\n");
      exit(1);
    }
    fprintf(outf, "%ld,%ld,%ld,%ld,%f,%f,%f",
          hdr.headersize, hdr.lpmagic, hdr.npoles, hdr.nvals,
          hdr.framrate, hdr.srate, hdr.duration);
    str = (char *)malloc(hdr.headersize-sizeof(LPHEADER)+4);
    fread(&hdr, sizeof(char), hdr.headersize-sizeof(LPHEADER)+4, inf);
    for (i=0; i<hdr.headersize-sizeof(LPHEADER)+4; i++)
      putc(str[i],outf);
    putc('\n', outf);
    coef = (float *)malloc((hdr.npoles+hdr.nvals)*sizeof(float));
    for (i = 0; i<hdr.nvals; i++) {
      fread(&coef[0], sizeof(float), hdr.npoles, inf);
      for (j=0; j<hdr.npoles; j++) 
          fprintf(outf, "%f%c", coef[j], (j==hdr.npoles-1 ? '\n' : ','));
    }
    fclose(outf);
    fclose(inf);
}

void usage(void)
{
    exit(1);
}


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