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/*
lpc_export.c
Copyright (C) 1995 John ffitch
This file is part of Csound.
The Csound Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
/* ***************************************************************** */
/* ******** Program to export lpanal files in tabular format. ****** */
/* ***************************************************************** */
/* ***************************************************************** */
/* John ffitch 1995 Jun 25 */
/* ***************************************************************** */
#include "std_util.h"
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#ifndef MYFLT
#include "sysdep.h"
#endif
#include "lpc.h"
#include "text.h"
void lpc_export_usage(CSOUND *csound)
{
csound->Message(csound, "%s", Str("usage: lpc_export lpc_file cstext-file\n"));
}
static int32_t lpc_export(CSOUND *csound, int32_t argc, char **argv)
{
FILE *inf;
FILE *outf;
LPHEADER hdr;
uint32_t i, j;
char *str;
MYFLT *coef;
if (UNLIKELY(argc!= 3)) {
lpc_export_usage(csound);
return 1;
}
inf = fopen(argv[1], "rb");
if (UNLIKELY(inf == NULL)) {
csound->Message(csound, Str("Cannot open input file %s\n"), argv[1]);
return 1;
}
outf = fopen(argv[2], "w");
if (UNLIKELY(outf == NULL)) {
csound->Message(csound, Str("Cannot open output file %s\n"), argv[2]);
fclose(inf);
return 1;
}
if (UNLIKELY(fread(&hdr, sizeof(LPHEADER)-4, 1, inf) != 1 ||
(hdr.lpmagic != LP_MAGIC && hdr.lpmagic != LP_MAGIC2))) {
csound->Message(csound, "%s", Str("Failed to read LPC header\n"));
fclose(inf);
fclose(outf);
return 1;
}
fprintf(outf, "%d,%d,%d,%d,%f,%f,%f",
hdr.headersize, hdr.lpmagic, hdr.npoles, hdr.nvals,
hdr.framrate, hdr.srate, hdr.duration);
if (UNLIKELY(hdr.npoles<=0)) { fclose(inf); fclose(outf); return 1; }
// to keep coverity happy
if (UNLIKELY(hdr.headersize>0x40000000 ||
hdr.headersize<sizeof(LPHEADER) ||
hdr.npoles+hdr.nvals > 0x10000000)) {
fclose(inf); fclose(outf); return 2;
}
str = (char *)csound->Malloc(csound,hdr.headersize-sizeof(LPHEADER)+4);
if (UNLIKELY(str==NULL)) {
fclose(inf); fclose(outf); return 2;}
if (UNLIKELY(fread(str, sizeof(char),
hdr.headersize-sizeof(LPHEADER)+4, inf)!=
hdr.headersize-sizeof(LPHEADER)+4))
csound->Message(csound, "%s", Str("Read failure\n"));
for (i=0; i<hdr.headersize-sizeof(LPHEADER)+4; i++)
putc(str[i],outf);
putc('\n', outf);
coef = (MYFLT *)csound->Malloc(csound,(hdr.npoles+hdr.nvals)*sizeof(MYFLT));
if (UNLIKELY(coef==NULL)) {
fclose(inf); fclose(outf); csound->Free(csound,str); return 3;}
for (i = 0; i<(uint32_t)floor(hdr.framrate*hdr.duration); i++) {
if (UNLIKELY(fread(&coef[0], sizeof(MYFLT), hdr.npoles, inf)!=hdr.npoles))
csound->Message(csound, "%s", Str("Read failure\n"));
for (j=0; j<hdr.npoles; j++)
fprintf(outf, "%f%c", coef[j], (j==hdr.npoles-1 ? '\n' : ','));
}
fclose(outf);
fclose(inf);
csound->Free(csound,coef); csound->Free(csound,str);
return 0;
}
/* module interface */
int32_t lpc_export_init_(CSOUND *csound)
{
int32_t retval = csound->AddUtility(csound, "lpc_export", lpc_export);
if (!retval) {
retval =
csound->SetUtilityDescription(csound, "lpc_export",
Str("translate linear predictive "
"coding file to text file"));
}
return retval;
}
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