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#include "getfile.h"
#include <QDir>
#include <stdlib.h>
#include <math.h>
#ifdef WIN32
#include <windows.h>
#else
#include <sys/types.h>
#include <sys/stat.h>
#include <termios.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <unistd.h>
#include <err.h>
#endif
void getfile(QString fname, int ntrperiod)
{
char name[80];
strcpy(name,fname.toLatin1());
FILE* fp=fopen(name,"rb");
int i0=fname.indexOf(".wav");
jt9com_.nutc=0;
if(i0>0) jt9com_.nutc=100*fname.mid(i0-4,2).toInt() +
fname.mid(i0-2,2).toInt();
int npts=ntrperiod*12000;
memset(jt9com_.d2,0,2*npts);
if(fp != NULL) {
// Read (and ignore) a 44-byte WAV header; then read data
int n=fread(jt9com_.d2,1,44,fp);
n=fread(jt9com_.d2,2,npts,fp);
fclose(fp);
jt9com_.newdat=1;
if(n==-99999) jt9com_.newdat=2; //Silence compiler warning
}
}
void savewav(QString fname, int ntrperiod)
{
struct {
char ariff[4]; //ChunkID: "RIFF"
int nchunk; //ChunkSize: 36+SubChunk2Size
char awave[4]; //Format: "WAVE"
char afmt[4]; //Subchunk1ID: "fmt "
int lenfmt; //Subchunk1Size: 16
short int nfmt2; //AudioFormat: 1
short int nchan2; //NumChannels: 1
int nsamrate; //SampleRate: 12000
int nbytesec; //ByteRate: SampleRate*NumChannels*BitsPerSample/8
short int nbytesam2; //BlockAlign: NumChannels*BitsPerSample/8
short int nbitsam2; //BitsPerSample: 16
char adata[4]; //Subchunk2ID: "data"
int ndata; //Subchunk2Size: numSamples*NumChannels*BitsPerSample/8
} hdr;
int npts=ntrperiod*12000;
// qint16* buf=(qint16*)malloc(2*npts);
char name[80];
strcpy(name,fname.toLatin1());
FILE* fp=fopen(name,"wb");
if(fp != NULL) {
// Write a WAV header
hdr.ariff[0]='R';
hdr.ariff[1]='I';
hdr.ariff[2]='F';
hdr.ariff[3]='F';
hdr.nchunk=36 + 2*npts;
hdr.awave[0]='W';
hdr.awave[1]='A';
hdr.awave[2]='V';
hdr.awave[3]='E';
hdr.afmt[0]='f';
hdr.afmt[1]='m';
hdr.afmt[2]='t';
hdr.afmt[3]=' ';
hdr.lenfmt=16;
hdr.nfmt2=1;
hdr.nchan2=1;
hdr.nsamrate=12000;
hdr.nbytesec=2*12000;
hdr.nbytesam2=2;
hdr.nbitsam2=16;
hdr.adata[0]='d';
hdr.adata[1]='a';
hdr.adata[2]='t';
hdr.adata[3]='a';
hdr.ndata=2*npts;
fwrite(&hdr,sizeof(hdr),1,fp);
// memcpy(jt9com_.d2,buf,2*npts);
// fwrite(buf,2,npts,fp);
fwrite(jt9com_.d2,2,npts,fp);
fclose(fp);
}
// free(buf);
}
//#define MAX_RANDOM 0x7fffffff
/* Generate gaussian random float with mean=0 and std_dev=1 */
float gran()
{
float fac,rsq,v1,v2;
static float gset;
static int iset;
if(iset){
/* Already got one */
iset = 0;
return gset;
}
/* Generate two evenly distributed numbers between -1 and +1
* that are inside the unit circle
*/
do {
v1 = 2.0 * (float)rand() / RAND_MAX - 1;
v2 = 2.0 * (float)rand() / RAND_MAX - 1;
rsq = v1*v1 + v2*v2;
} while(rsq >= 1.0 || rsq == 0.0);
fac = sqrt(-2.0*log(rsq)/rsq);
gset = v1*fac;
iset++;
return v2*fac;
}
int ptt(int nport, int ntx, int* iptt, int* nopen)
{
#ifdef WIN32
static HANDLE hFile;
char s[10];
int i3=1,i4=1,i5=1,i6=1,i9=1,i00=1; //Defs to silence compiler warning
if(nport==0) {
*iptt=ntx;
return 0;
}
if(ntx && (!(*nopen))) {
sprintf(s,"\\\\.\\COM%d",nport);
hFile=CreateFile(TEXT(s),GENERIC_WRITE,0,NULL,OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,NULL);
if(hFile==INVALID_HANDLE_VALUE) {
QString t;
t.sprintf("Cannot open COM port %d for PTT\n",nport);
return 1;
}
*nopen=1;
}
if(ntx && *nopen) {
i3=EscapeCommFunction(hFile,SETRTS);
i5=EscapeCommFunction(hFile,SETDTR);
*iptt=1;
}
else {
i4=EscapeCommFunction(hFile,CLRRTS);
i6=EscapeCommFunction(hFile,CLRDTR);
i9=EscapeCommFunction(hFile,CLRBREAK);
i00=CloseHandle(hFile);
*iptt=0;
*nopen=0;
}
if((i3+i4+i5+i6+i9+i00)==-999) return 1; //Silence compiler warning
return 0;
#else
int control=TIOCM_RTS | TIOCM_DTR;
// int control = TIOCM_RTS;
static int fd;
if(*nopen==0) {
fd=open("/dev/ttyUSB0",O_RDWR | O_NONBLOCK);
if(fd<0) {
return -1;
}
*nopen=1;
}
if(ntx) {
ioctl(fd, TIOCMBIS, &control);
*iptt=1;
*nopen=1;
} else {
ioctl(fd, TIOCMBIC, &control);
close(fd);
*iptt=0;
*nopen=0;
}
return 0;
#endif
if((nport+ntx+(*iptt)==-99999)) *nopen=0; //Silence compiler warning
return 0;
}
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