diff projects/basic_midi/render.cpp @ 226:af1e662400fc mergingClockSync

Added argument to callback

--- a/projects/basic_midi/render.cpp	Tue Mar 08 16:03:14 2016 +0000
+++ b/projects/basic_midi/render.cpp	Sun Mar 13 03:31:19 2016 +0000
@@ -18,7 +18,10 @@
 int gVelocity = 0;
 float gSamplingPeriod = 0;
 
-void midiMessageCallback(MidiChannelMessage message){
+void midiMessageCallback(MidiChannelMessage message, void* arg){
+	if(arg != NULL){
+		rt_printf("Message from midi port %d: ", *(int*)arg);
+	}
 	message.prettyPrint();
 	if(message.getType() == kmmNoteOn){
 		gFreq = powf(2, (message.getDataByte(0)-69)/12.0f) * 440;
@@ -37,14 +40,15 @@
 //
 // Return true on success; returning false halts the program.
 Midi midi;
+int gMidiPort0 = 0;
 bool setup(BeagleRTContext *context, void *userData)
 {
-	midi.readFrom(0);
-	midi.writeTo(0);
+	midi.readFrom(gMidiPort0);
+	midi.writeTo(gMidiPort0);
 	midi.enableParser(true);
-	midi.setParserCallback(midiMessageCallback);
+	midi.setParserCallback(midiMessageCallback, &gMidiPort0);
 	if(context->analogFrames == 0) {
-		rt_printf("Error: this example needs the matrix enabled\n");
+		rt_printf("Error: this example needs the analog I/O to be enabled\n");
 		return false;
 	}
 	gSamplingPeriod = 1/context->audioSampleRate;