Add MIDI port listing

src/mcu.cpp

@@ -1375,6 +1375,7 @@ int main(int argc, char *argv[])
     int pageNum = 32;
     bool autodetect = true;
     ResetType resetType = ResetType::NONE;
+    bool listMidi = false;
 
     romset = ROM_SET_MK2;
 
@@ -1453,6 +1454,10 @@ int main(int argc, char *argv[])
             {
                 resetType = ResetType::GM_RESET;
             }
+            else if (!strcmp(argv[i], "-pl"))
+            {
+                listMidi = true;
+            }
             else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "-help") || !strcmp(argv[i], "--help"))
             {
                 // TODO: Might want to try to find a way to print out the executable's actual name (without any full paths).
@@ -1474,6 +1479,8 @@ int main(int argc, char *argv[])
                 printf("\n");
                 printf("  -gs                            Reset system in GS mode.\n");
                 printf("  -gm                            Reset system in GM mode.\n");
+                printf("\n");
+                printf("  -pl                            List all MIDI ports.\n");
                 return 0;
             }
             else if (!strcmp(argv[i], "-sc155"))
@@ -1749,7 +1756,7 @@ int main(int argc, char *argv[])
         return 2;
     }
 
-    if(!MIDI_Init(port))
+    if(!MIDI_Init(port, listMidi))
     {
         fprintf(stderr, "ERROR: Failed to initialize the MIDI Input.\nWARNING: Continuing without MIDI Input...\n");
         fflush(stderr);

src/midi.h

@@ -33,6 +33,6 @@
  */
 #pragma once
 
-int MIDI_Init(int port);
+int MIDI_Init(int port, bool listMidi);
 void MIDI_Quit(void);
 

src/midi_rtmidi.cpp

@@ -21,7 +21,7 @@ static void MidiOnError(RtMidiError::Type, const std::string &errorText, void *)
     fflush(stderr);
 }
 
-int MIDI_Init(int port)
+int MIDI_Init(int port, bool listMidi)
 {
     if (s_midi_in)
     {
@@ -36,6 +36,12 @@ int MIDI_Init(int port)
 
     unsigned count = s_midi_in->getPortCount();
 
+    if (listMidi) {
+        for (unsigned i = 0; i < count; i++) {
+            printf("Port[%u]: %s\n", i, s_midi_in->getPortName(i).c_str());
+        }
+    }
+
     if (count == 0)
     {
         printf("No midi input\n");

src/midi_win32.cpp

@@ -101,7 +101,7 @@ void CALLBACK MIDI_Callback(
     }
 }
 
-int MIDI_Init(int port)
+int MIDI_Init(int port, bool listMidi)
 {
     int num = midiInGetNumDevs();
 
@@ -111,6 +111,14 @@ int MIDI_Init(int port)
         return 0;
     }
 
+    if (listMidi) {              
+        for (int i = 0; i < num; i++) {
+            MIDIINCAPSA caps;
+            midiInGetDevCapsA(i, &caps, sizeof(MIDIINCAPSA));
+            printf("Port[%d]: %s\n", i, caps.szPname);
+        }
+    }
+
     if (port < 0 || port >= num)
     {
         printf("Out of range midi port is requested. Defaulting to port 0\n");