/* service routines for expression reading */
getnum(int (*rdf)(void))
{
char *cp;
int base, d;
BOOL fpnum;
char num[MAXLIN];
base = 0;
fpnum = FALSE;
if (lastc == '#') {
base = 16;
(*rdf)();
}
if (convdig(lastc) >= MAXBASE)
return (0);
if (lastc == '0')
switch ((*rdf)()) {
case 'x':
case 'X':
base = 16;
(*rdf)();
break;
case 't':
case 'T':
base = 10;
(*rdf)();
break;
case 'o':
case 'O':
base = 8;
(*rdf)();
break;
default:
if (base == 0)
base = 8;
break;
}
if (base == 0)
base = 10;
expv = 0;
for (cp = num, *cp = lastc; ;(*rdf)()) {
if ((d = convdig(lastc)) < base) {
expv *= base;
expv += d;
*cp++ = lastc;
}
else if (lastc == '.') {
fpnum = TRUE;
*cp++ = lastc;
} else {
reread();
break;
}
}
if (fpnum)
expv = fpin(num);
return (1);
}
int ReadWFM(const wxString filename, const char *file_output, std::vector< std::pair<int, int> > &iq_pairs)
{
if (filename.length() <= 1)
return 0;
wxFFile fpin(filename, "rb");
//FILE *fpout; // File pointers
unsigned char inputBuffer[4];
unsigned char c1, c2, c3, c4; // To read Agilent Signal Studio file
double iin, qin; // IQ inputs
int iint, qint; // IQ integer versions
int cnt = 0;
if (fpin.IsOpened() == false)
{
printf("WFM Converter: Input file can not be opened.");
return -1;
}
while (fpin.Read(inputBuffer, 4) == 4)
{
c1 = inputBuffer[0];
c2 = inputBuffer[1];
c3 = inputBuffer[2];
c4 = inputBuffer[3];
cnt++;
c1 &= 0xFF;
c2 &= 0xFF;
c3 &= 0xFF;
c4 &= 0xFF;
if (c1 & 0x80) iin = (double)(-1 * (1 << 15) + ((c1 & 0x7F) << 8) + c2);
else iin = (double)(((c1 & 0x7F) << 8) + c2);
if (c3 & 0x80) qin = (double)(-1 * (1 << 15) + ((c3 & 0x7F) << 8) + c4);
else qin = (double)(((c3 & 0x7F) << 8) + c4);
iint = (int)(iin);
qint = (int)(qin);
iint = iint >> 4;
qint = qint >> 4;
iq_pairs.push_back(std::pair<int, int>(iint, qint));
};
return 0;
}