Ejemplo n.º 1
0
listener_ptr makeStreamListener(StreamingDevice* dev, ClientConn* client, JSONNode &n){
	std::auto_ptr<WSStreamListener> listener(new WSStreamListener());

	listener->id = jsonIntProp(n, "id");
	listener->device = dev;
	listener->client = client;
	
	listener->decimateFactor = jsonIntProp(n, "decimateFactor", 1);
	
	// Prevent divide by 0
	if (listener->decimateFactor == 0) listener->decimateFactor = 1; 

	int start = jsonIntProp(n, "start", -1);
	if (start < 0){ // Negative indexes are relative to latest sample
		start = (dev->buffer_max()) + start + 1;
	}

	if (start < 0) listener->index = 0;
	else listener->index = start;
	
	listener->count = jsonIntProp(n, "count");
	
	JSONNode j_streams = n.at("streams");
	for(JSONNode::iterator i=j_streams.begin(); i!=j_streams.end(); i++){
		listener->streams.push_back(
			dev->findStream(
				jsonStringProp(*i, "channel"),
				jsonStringProp(*i, "stream")));
	}
	
	JSONNode::iterator t = n.find("trigger");
	if (t != n.end() && (t->type()) == JSON_NODE){
		JSONNode &trigger = *t;
		
		string type = jsonStringProp(trigger, "type", "in");
		if (type == "in"){
			listener->triggerType = INSTREAM;
			listener->triggerLevel = jsonFloatProp(trigger, "level");
			listener->triggerStream = dev->findStream(
				jsonStringProp(trigger, "channel"),
				jsonStringProp(trigger, "stream"));
		}else if (type == "out"){
			listener->triggerType = OUTSOURCE;
			listener->triggerChannel = dev->channelById(jsonStringProp(trigger, "channel"));
			if (!listener->triggerChannel) throw ErrorStringException("Trigger channel not found");
		}else{
			throw ErrorStringException("Invalid trigger type");
		}
			
		listener->triggerRepeat = jsonBoolProp(trigger, "repeat", true);
		listener->triggerHoldoff = jsonIntProp(trigger, "holdoff", 0);
		listener->triggerOffset = jsonIntProp(trigger, "offset", 0);
		
		if (listener->triggerOffset<0 && -listener->triggerOffset >= listener->triggerHoldoff){
			// Prevent big negative offsets that could cause infinite loops
			listener->triggerHoldoff = -listener->triggerOffset;
		}
		listener->triggerForce = jsonIntProp(trigger, "force", 0);
		listener->triggerForceIndex = listener->index + listener->triggerForce;
	}
		
		
	return listener_ptr(listener.release());
}
Ejemplo n.º 2
0
inline bool jsonBoolProp(JSONNode &n, const char* prop, bool def){
	JSONNode::iterator i = n.find(prop);
	if (i != n.end() && i->type() == JSON_BOOL) return i->as_bool();
	else return def;
}
Ejemplo n.º 3
0
inline double jsonFloatProp(JSONNode &n, const char* prop, double def){
	JSONNode::iterator i = n.find(prop);
	if (i != n.end() && i->type() == JSON_NUMBER) return i->as_float();
	else return def;
}
Ejemplo n.º 4
0
inline int jsonIntProp(JSONNode &n, const char* prop, int def){
	JSONNode::iterator i = n.find(prop);
	if (i != n.end() && i->type() == JSON_NUMBER) return i->as_int();
	else return def;
}
Ejemplo n.º 5
0
inline string jsonStringProp(JSONNode &n, const char* prop, string def){
	JSONNode::iterator i = n.find(prop);
	if (i != n.end() && i->type() == JSON_STRING) return i->as_string();
	else return def;
}
Ejemplo n.º 6
0
inline double jsonFloatProp(JSONNode &n, const char* prop){
	JSONNode::iterator i = n.find(prop);
	if (i != n.end() && i->type() == JSON_NUMBER) return i->as_float();
	else throw ErrorStringException(string("JSON missing float property: ") + prop);
}
Ejemplo n.º 7
0
inline bool jsonBoolProp(JSONNode &n, const char* prop){
	JSONNode::iterator i = n.find(prop);
	if (i != n.end() && i->type() == JSON_BOOL) return i->as_bool();
	else throw ErrorStringException(string("JSON missing bool property: ") + prop);
}
Ejemplo n.º 8
0
inline string jsonStringProp(JSONNode &n, const char* prop){
	JSONNode::iterator i = n.find(prop);
	if (i != n.end() && i->type() == JSON_STRING) return i->as_string();
	else throw ErrorStringException(string("JSON missing string property: ") + prop);
}