Midi: exists()

BelaPlatform · Feb 8, 2024 · 0befe50 · 0befe50
1 parent e16a346
commit 0befe50
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Showing 2 changed files with 11 additions and 0 deletions.
diff --git a/libraries/Midi/Midi.cpp b/libraries/Midi/Midi.cpp
@@ -304,6 +304,16 @@ static int getPort(snd_rawmidi_t* rmidi, Midi::Port& port) {
 	return 0;
 }
 
+bool Midi::exists(const char* port)
+{
+	snd_rawmidi_t* d;
+	if(snd_rawmidi_open(&d, NULL, port, 0)) // open in
+		if(snd_rawmidi_open(NULL, &d, port, 0)) // open out
+			return false;
+	snd_rawmidi_close(d);
+	return true;
+}
+
 int Midi::readFrom(const char* port){
 	if(port == NULL){
 		port = defaultPort.c_str();

diff --git a/libraries/Midi/Midi.h b/libraries/Midi/Midi.h
@@ -396,6 +396,7 @@ class Midi {
 	const Port& getInputPort() const { return inPortFull; }
 	const Port& getOutputPort() const { return outPortFull; }
 	static std::vector<Port> listAllPorts();
+	static bool exists(const char* port);
 	/**
 	 * Opens all the existing MIDI ports, in the same order returned by the filesystem or Alsa.
 	 * Ports open with this method should be closed with destroyPorts()