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mididevices.py
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mididevices.py
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import pygame.midi as midi
class UsbMidiDevices():
def __init__(self):
print("listing MIDI devices")
midi.init()
self.outputs = []
self.inputs = []
count = midi.get_count()
print("found", count, "(including non USB)")
for d in range(count):
info = midi.get_device_info(d)
name = info[1].decode("utf-8")
isOutput = (info[3] == 1)
isInput = (info[2] == 1)
if isOutput and "USB" in name: self.outputs.append((d, name))
if isInput and "USB" in name: self.inputs.append((d, name))
print("inputs:", self.inputs)
print("outputs:", self.outputs)
if len(self.inputs) == 0 or len(self.outputs) == 0:
print("need both input and output USB devices")
exit()
def forInput(self):
return self.inputs[0][0] if len(self.inputs) > 0 else None
def forOutput(self):
return self.outputs[0][0] if len(self.outputs) > 0 else None
def __del__(self):
midi.quit()
print("exiting MIDI")
class MidiIo():
def __init__(self, io):
self.io = io
def __del__(self):
self.io.close()
del self.io
class MidiOut(MidiIo):
def __init__(self, devs):
MidiIo.__init__(self, midi.Output(devs.forOutput(), latency = 0))
class MidiIn(MidiIo):
def __init__(self, devs):
MidiIo.__init__(self, midi.Input(devs.forInput()))