speakdate stuff.

Robert Nicholson (robert@steffi.dircon.co.uk)
Sat, 4 Feb 1995 17:58:14 +0100

Well I've found that in order to get speakdate.pl working under SunOS
you have to use the following...

$cmd = "say -r 8000 \"$msg\" -u - "
        . "| autopvf | pvfamp $amp | pvftoadpcm3";

Does anybody else have problems with pvfcut running out of memory when
you try to use it where it use to be?


I suspect this is a bug in either the way it's been compiled or
written... IT shouldn't be saying that on my Sun at the moment.

It seems I was right...

SunOS's realloc, according to the man page, doesn't like being called
on a block that hasn't been previously malloced.

observe.

int
pvfcut _P2((argc, argv), int argc, char **argv ) {
    FILE *in=stdin, *out=stdout;
    int arg=1;
    int len=0, lmax=0, *buf=0;
    int i;
    int head=0, tail=0;
 
    if(argc<2 || argc>3) USAGE("[<head>] <tail>");
    if(argc==3) head=(int)(RATE * atof(argv[arg++]));
    tail=(int)(RATE * atof(argv[arg++]));
 
    while(1) {
    int d;
    d=zget(in);
    if(feof(in)) break;
    if(len>=lmax) {
        printf("len is %d lmax is %d\n",len,lmax);
 
        lmax+=BLK;
        buf=malloc(0);		/* needs to be malloced first */
        buf=(int*) realloc(buf, lmax*sizeof(int));
        if(!buf) ERRORRETURN("out of memory");
    }
    buf[len++]=d;
    }
    for(i=head; i<len-tail; i++) {
    int d;
    if(i>=0 && i<len) d=buf[i];
    else d=0;
    zput(d, out);
    }
    return 0;
}
 
All occurences need a either a condition call to malloc of what I've
done above seems logical.

There are three occurences of this "construct" in pvfutil.c

Cheers.