Clean up midiIO implementation

src/core/MidiIO.cpp

@@ -119,7 +119,7 @@ std::string MidiIO::getDeviceName() {
 }
 
 double MidiIO::getMessage(std::vector<unsigned char> *msg) {
-	std::vector<unsigned char> next_msg;
+	MidiMessage next_msg = MidiMessage();
 
 	MidiInWrapper *mw = midiInMap[deviceName];
 
@@ -128,24 +128,23 @@ double MidiIO::getMessage(std::vector<unsigned char> *msg) {
 		return 0;
 	}
 
-	double stamp = midiInMap[deviceName]->getMessage(&next_msg);
+	next_msg.timeStamp = midiInMap[deviceName]->getMessage(&next_msg.bytes);
+	if (next_msg.bytes.size() > 0) {
+		for (auto &kv : mw->idMessagesMap) {
 
-	if (next_msg.size() > 0) {
-		for (auto kv : mw->idMessagesMap) {
-			mw->idMessagesMap[kv.first].push_back(next_msg);
-			mw->idStampsMap[kv.first].push_back(stamp);
+			kv.second.push_back(next_msg);
 		}
 	}
 
-	if (mw->idMessagesMap[id].size() <= 0) {
-		*msg = next_msg;
-		return stamp;
+
+	if (mw->idMessagesMap[id].size() > 0) {
+		next_msg = mw->idMessagesMap[id].front();
+		mw->idMessagesMap[id].pop_front();
 	}
 
-	*msg = mw->idMessagesMap[id].front();
-	stamp = mw->idStampsMap[id].front();
-	mw->idMessagesMap[id].pop_front();
-	return stamp;
+	*msg = next_msg.bytes;
+
+	return next_msg.timeStamp;
 }
 
 bool MidiIO::isPortOpen() {
@@ -165,7 +164,7 @@ void MidiIO::close() {
 
 	mw->erase(id);
 
-	if (mw->subscribers == 0) {
+	if (mw->idMessagesMap.size() == 0) {
 		mw->closePort();
 		midiInMap.erase(deviceName);
 	}

src/core/MidiIO.hpp

@@ -11,37 +11,39 @@ struct IgnoreFlags {
 	bool midiSense = true;
 };
 
+struct MidiMessage {
+	std::vector<unsigned char> bytes;
+	double timeStamp;
+
+	MidiMessage(): bytes(0), timeStamp(0.0) {};
+
+};
+
 /**
  * This class allows to use one instance of rtMidiIn with
  * multiple modules. A MidiIn port will be opened only once while multiple
  * instances can use it simultaniously, each receiving all its incoming messages.
  */
-
 struct MidiInWrapper : RtMidiIn {
 
+	std::unordered_map<int, std::list<MidiMessage>> idMessagesMap;
 	std::unordered_map<int, IgnoreFlags> ignoresMap;
 
 	int uid_c = 0;
-	int subscribers = 0;
 
 	MidiInWrapper() : RtMidiIn() {
 		idMessagesMap = {};
-		idStampsMap = {};
 	};
 
 	int add() {
 		int id = ++uid_c;
-		subscribers++;
 		idMessagesMap[id] = {};
-		idStampsMap[id] = {};
-
+		ignoresMap[id] = IgnoreFlags();
 		return id;
 	}
 
 	void erase(int id) {
-		subscribers--;
 		idMessagesMap.erase(id);
-		idStampsMap.erase(id);
 		ignoresMap.erase(id);
 	}
 };
@@ -88,7 +90,7 @@ public:
 	virtual void resetMidi()=0;
 
 	/* called if a user switches or sets the deivce (and after this device is initialised)*/
-	virtual void onDeviceChange(){};
+	virtual void onDeviceChange() {};
 };
 
 //////////////////////