Modelbahn/server/turnout.cc

#include "modelbahn.h"
#include "turnout.h"

Turnouts::Turnouts() {
	changed = 0;
	turnouts = (Turnout*) malloc(sizeof(Turnout)*TURNOUTS_MAX);
	max = TURNOUTS_MAX;
};

Turnouts::~Turnouts() {
	free (turnouts);
	max = 0;
	turnouts = NULL;
};


int Turnouts::Lock() {
	if (pthread_mutex_lock(&mtx) == 0) return 1;
	else return 0;
}


int Turnouts::UnLock() {
	if (pthread_mutex_unlock(&mtx) == 0) return 1;
	else return 0;
}


JSONParse Turnouts::_GetJSON(int idx) {
	JSONParse json;
	JSONElement je;
	string s = "";

	json.Clear();

	s = turnouts[idx].name; json.AddObject("name", s);
	s = turnouts[idx].ifname; json.AddObject("ifname", s);
	json.AddObject("addr", turnouts[idx].addr);
	json.AddObject("activetimeout", turnouts[idx].activetimeout);
	json.AddObject("flags", turnouts[idx].flags);

	return json;
};


JSONParse Turnouts::GetJSON(string name) {
	int i;
	JSONParse jp;

	jp.Clear();

	Lock();
	for (i = 0; i < max; i++) if (turnouts[i].name[0] != 0) {
		if (name.compare(turnouts[i].name) == 0) {
			jp = _GetJSON(i);
		}
	}

	UnLock();

	return jp;
};


void Turnouts::GetJSONAll(JSONParse *json) {
	int i, cnt;
	JSONElement je;

	Lock();

	//
	// write all railway data
	// create json object array manualy
	je.type = JSON_T_ARRAY;
	je.name = "turnouts";
	for (cnt = 0, i = 0; i < max; i++)
		if (turnouts[i].name[0] != 0) {
			if (cnt != 0) je.value += ",";			// not first element
			je.value += _GetJSON(i).ToString();
			cnt++;
		}
	json->AddObject(je);

	UnLock();
};


Turnout Turnouts::GetTurnoutFromJSON(JSONParse *j) {
	Turnout to;
	string s;

	to.name[0] = 0;
	to.ifname[0] = 0;
	to.addr = 0;
	to.activetimeout = TURNOUT_DEFAULT_ACTIVETIMEOUT;		// default active timeout in MS
	to.flags = 0;

	j->GetValue("name", &s);
	strncpy (to.name, s.c_str(), REFERENCENAME_LEN);
	j->GetValue("ifname", &s);
	strncpy (to.ifname, s.c_str(), REFERENCENAME_LEN);
	j->GetValueInt("addr", &to.addr);
	j->GetValueInt("activetimeout", &to.activetimeout);
	j->GetValueInt("flags", &to.flags);

	return to;
};


int Turnouts::Change(Turnout *to) {
	int i;
	int ifree = -1;

	Lock();

	for (i = 0; i < max; i++) {
		if (turnouts[i].name[0] != 0) {
			// found element
			if (strncmp(turnouts[i].name, to->name, REFERENCENAME_LEN) == 0) {
				ifree = i;
				break;
			}
		}
		else if (ifree == -1) ifree = i;
	}
	// element not found add new element
	if (ifree != -1 && ifree < max) {
		turnouts[ifree] = *to;
		strncpy (turnouts[ifree].name, to->name, REFERENCENAME_LEN);
		strncpy (turnouts[ifree].ifname, to->ifname, REFERENCENAME_LEN);
		turnouts[ifree].activetimeout = to->activetimeout;
	}

	changed = 1;
	UnLock();

	return 1;
};


int Turnouts::Delete(string name) {
	int i;

	Lock();
	for (i = 0; i < max; i++) if (turnouts[i].name[0] != 0) {
		if (name.compare(turnouts[i].name) == 0) {
			turnouts[i].name[0] = 0;
			turnouts[i].ifname[0] = 0;
			turnouts[i].addr = 0;
			turnouts[i].flags = 0;
			turnouts[i].activetimeout = TURNOUT_DEFAULT_ACTIVETIMEOUT;
			changed = 1;
			break;
		}
	}

	UnLock();

	return 1;
};


int Turnouts::Set(string name, int value) {
	int i;

	//
	Lock();
	for (i = 0; i < max; i++) if (turnouts[i].name[0] != 0) {
		if (name.compare(turnouts[i].name) == 0) {
			debug (0, "Turnout::Set: Name:%s Flags:%d[%c%c%c] Value:%d", name.c_str(), turnouts[i].flags,
					(turnouts[i].flags & TURNOUT_F_INVERSE) ? 'I' : '-',
					(turnouts[i].flags & TURNOUT_F_ACTIVE) ? 'A' : '-',
					(turnouts[i].flags & TURNOUT_F_TURNOUT) ? 'T' : '-',
					value);
			if (turnouts[i].flags & TURNOUT_F_INVERSE)
				server->interfaces.SetTurnout(&turnouts[i], !value, 1);	// motor on
			else
				server->interfaces.SetTurnout(&turnouts[i], value, 1);	// motor on
			gettimeofday (&turnouts[i].activatetime, NULL);
			changed = 1;

			break;
		}
	}
	UnLock();

	return 1;
};

//
// got some data from bus
void Turnouts::SetFromBus(string ifname, int addr, int value) {
	int i;
	JSONParse jp;

	debug (0, "Turnouts::SetFromBus Interface:%s, addr: %d, value:%d", ifname.c_str(), addr, value);

	for (i = 0; i < max; i++) if (turnouts[i].name[0] != 0) {
		if (ifname.compare(turnouts[i].ifname) == 0 && turnouts[i].addr == addr) {
			debug (0, "Turnout::SetFromBus Name:%s Flags:%d[%c%c%c]", turnouts[i].name, turnouts[i].flags,
					(turnouts[i].flags & TURNOUT_F_INVERSE) ? 'I' : '-',
					(turnouts[i].flags & TURNOUT_F_ACTIVE) ? 'A' : '-',
					(turnouts[i].flags & TURNOUT_F_TURNOUT) ? 'T' : '-');

//			if (value)	turnouts[i].flags |= TURNOUT_F_ACTIVE;
//			else 		turnouts[i].flags &= ~TURNOUT_F_ACTIVE;

			if (turnouts[i].flags & TURNOUT_F_INVERSE) {
				if (value)	turnouts[i].flags &= ~TURNOUT_F_TURNOUT;
				else 		turnouts[i].flags |= TURNOUT_F_TURNOUT;
			}
			else {
				if (value)	turnouts[i].flags |= TURNOUT_F_TURNOUT;
				else 		turnouts[i].flags &= ~TURNOUT_F_TURNOUT;
			}
			debug (0, "Turnout::SetFromBus Name:%s Flags:%d[%c%c%c]", turnouts[i].name, turnouts[i].flags,
					(turnouts[i].flags & TURNOUT_F_INVERSE) ? 'I' : '-',
					(turnouts[i].flags & TURNOUT_F_ACTIVE) ? 'A' : '-',
					(turnouts[i].flags & TURNOUT_F_TURNOUT) ? 'T' : '-');

			jp.AddObject("turnout", _GetJSON(i));
			if(network) network->ChangeListPushToAll(jp.ToString());
		}
	}
};



//
// this loop is important: Turnout motors needs to be deactivated after a short time
//
void Turnouts::Loop() {
	int i;
	struct timeval curtime;

	gettimeofday(&curtime, NULL);

	Lock();

	for (i = 0; i < max; i++) if (turnouts[i].name[0] != 0) {
		if (turnouts[i].flags & TURNOUT_F_ACTIVE) {
			//
			// motor still active check timeout and deactivate
			int timediff = (1000 * (curtime.tv_sec - turnouts[i].activatetime.tv_sec)) +
					((curtime.tv_usec - turnouts[i].activatetime.tv_usec) / 1000);
			if (timediff < 0) gettimeofday (&turnouts[i].activatetime, NULL);

//			debug (0, "%s:%d timediff: %d", __FILE__, __LINE__, timediff);

			if (timediff > turnouts[i].activetimeout) {
				int active = turnouts[i].flags & TURNOUT_F_TURNOUT;
				if (turnouts[i].flags & TURNOUT_F_INVERSE)
					server->interfaces.SetTurnout(&turnouts[i], !active, 0);	// motor on
				else
					server->interfaces.SetTurnout(&turnouts[i], active, 0);	// motor on
				turnouts[i].flags &= ~TURNOUT_F_ACTIVE;
			}
		}
	}
	UnLock();
};