create midi interface and connect fluidsynth

midi_interface.cpp

#include <iostream>
#include <cstdlib>
#include <smf.h>
#include <algorithm>
#include <chrono>
#include <thread>
#include <unistd.h>
#include "RtMidi.h"

static std::string outClientName = std::string("MKT Output Client");
static std::string outPortName = std::string("MKT Output Port");

static std::string targetOut = std::string("FLUID");

void mycallback(double deltatime, std::vector<unsigned char> *message, void *userData) {}

int outPortIndex findMidiPort (std::string outPortName, RtMidi * midi) {
	try {
		unsigned int nPorts = midi->getPortCount();
		for (unsigned int i=0; i<nPorts; i++) {
			std::string portName = midi->getPortName(i);
			std::string::size_type loc = portName.find(outPortName, 0);
			if (loc != std::string::npos) return i;
		}
	} catch (RtMidiError &error) {
		error.printMessage();
	}
	return -1;
}


int main()
{
	RtMidi * midiout = new RtMidiOut();
	int outPort = findMidiPort(targetOut, midiout);
	if (outPort < 0) {
		std::cout << "Not found target port" << std::endl;
		exit(1);
	}
	midiout->openPort(outPort, outPortName);

	while (true) {
		int chr = std::cin.get();
		if (chr == 'q') break;
	}

	delete midiout;
	return 0;
}