Function main

examples/echo.cpp:14–71

#include <thread>

int main()
{
#if defined(_WIN32) && __has_include(<winrt/base.h>)
  // Necessary for using WinUWP and WinMIDI, must be done as early as possible in your main()
  winrt::init_apartment();
#endif

  libremidi::observer obs;
  auto inputs = obs.get_input_ports();
  auto outputs = obs.get_output_ports();

  if (inputs.size() == 0)
  {
    std::cerr << "No available input port.\n";
    return -1;
  }
  if (outputs.size() == 0)
  {
    std::cerr << "No available output port.\n";
    return -1;
  }

  libremidi::midi_out midiout{
      libremidi::output_configuration{}, libremidi::midi_out_configuration_for(obs)};

  libremidi::midi_in midiin{
      {
          // Set our callback function.
          .on_message =
              [&](const libremidi::message& message) {
    std::cout << message << std::endl;
    auto _ = midiout.send_message(message);
  },
      },
      libremidi::midi_in_configuration_for(obs)};

  if (stdx::error err = midiout.open_port(outputs[0]); err.is_set())
  {
  }
  if (!midiout.is_port_connected())
  {
    std::cerr << "Could not connect to midi out\n";
    return -1;
  }
  midiin.open_port(inputs[0]);
  if (!midiin.is_port_connected())
  {
    std::cerr << "Could not connect to midi in\n";
    return -1;
  }

  std::cout << "Creating an echo bridge: " << inputs[0].display_name << " => "
            << outputs[0].display_name << "\n";
  while (1)
    std::this_thread::sleep_for(std::chrono::milliseconds(100));
  char input;
  std::cin.get(input);
}