Version 1.0.12

1 files changed, 61 insertions, 32 deletions

diff --git a/tests/cmidiin.cpp b/tests/cmidiin.cpp
index 0556b80..f2f392b 100644
--- a/tests/cmidiin.cpp
+++ b/tests/cmidiin.cpp
@@ -28,6 +28,11 @@ void mycallback( double deltatime, std::vector< unsigned char > *message, void *
     std::cout << "stamp = " << deltatime << std::endl;
 }
 
+// This function should be embedded in a try/catch block in case of
+// an exception.  It offers the user a choice of MIDI ports to open.
+// It returns false if there are no ports available.
+bool chooseMidiPort( RtMidiIn *rtmidi );
+
 int main( int argc, char *argv[] )
 {
   RtMidiIn *midiin = 0;
@@ -35,48 +40,72 @@ int main( int argc, char *argv[] )
   // Minimal command-line check.
   if ( argc > 2 ) usage();
 
-  // RtMidiIn constructor
   try {
+
+    // RtMidiIn constructor
     midiin = new RtMidiIn();
-  }
-  catch ( RtError &error ) {
-    error.printMessage();
-    exit( EXIT_FAILURE );
-  }
 
-  // Check available ports vs. specified.
-  unsigned int port = 0;
-  unsigned int nPorts = midiin->getPortCount();
-  if ( argc == 2 ) port = (unsigned int) atoi( argv[1] );
-  if ( port >= nPorts ) {
-    delete midiin;
-    std::cout << "Invalid port specifier!\n";
-    usage();
-  }
+    // Call function to select port.
+    if ( chooseMidiPort( midiin ) == false ) goto cleanup;
 
-  try {
-    midiin->openPort( port );
-  }
-  catch ( RtError &error ) {
-    error.printMessage();
-    goto cleanup;
-  }
+    // Set our callback function.  This should be done immediately after
+    // opening the port to avoid having incoming messages written to the
+    // queue instead of sent to the callback function.
+    midiin->setCallback( &mycallback );
 
-  // Set our callback function.  This should be done immediately after
-  // opening the port to avoid having incoming messages written to the
-  // queue instead of sent to the callback function.
-  midiin->setCallback( &mycallback );
+    // Don't ignore sysex, timing, or active sensing messages.
+    midiin->ignoreTypes( false, false, false );
 
-  // Don't ignore sysex, timing, or active sensing messages.
-  midiin->ignoreTypes( false, false, false );
+    std::cout << "\nReading MIDI input ... press <enter> to quit.\n";
+    char input;
+    std::cin.get(input);
 
-  std::cout << "\nReading MIDI input ... press <enter> to quit.\n";
-  char input;
-  std::cin.get(input);
+  } catch ( RtError &error ) {
+    error.printMessage();
+  }
 
-  // Clean up
  cleanup:
+
   delete midiin;
 
   return 0;
 }
+
+bool chooseMidiPort( RtMidiIn *rtmidi )
+{
+  std::cout << "\nWould you like to open a virtual input port? [y/N] ";
+
+  std::string keyHit;
+  std::getline( std::cin, keyHit );
+  if ( keyHit == "y" ) {
+    rtmidi->openVirtualPort();
+    return true;
+  }
+
+  std::string portName;
+  unsigned int i = 0, nPorts = rtmidi->getPortCount();
+  if ( nPorts == 0 ) {
+    std::cout << "No input ports available!" << std::endl;
+    return false;
+  }
+
+  if ( nPorts == 1 ) {
+    std::cout << "\nOpening " << rtmidi->getPortName() << std::endl;
+  }
+  else {
+    for ( i=0; i<nPorts; i++ ) {
+      portName = rtmidi->getPortName(i);
+      std::cout << "  Input port #" << i << ": " << portName << '\n';
+    }
+
+    do {
+      std::cout << "\nChoose a port number: ";
+      std::cin >> i;
+    } while ( i >= nPorts );
+  }
+
+  std::getline( std::cin, keyHit );  // used to clear out stdin
+  rtmidi->openPort( i );
+
+  return true;
+}