Metronome: Allow configurable midi_channel

Author: ideoforms

isobar/timelines/__init__.py

@@ -6,4 +6,4 @@
 from .clock_link import AbletonLinkClock
 from .midi_note import MidiNoteInstance
 
-__all__ = ["Timeline", "Track", "LFO", "Automation", "Clock", "DummyClock", "AbletonLinkClock", "MidiNoteInstance"]
+__all__ = ["Timeline", "Track", "LFO", "Automation", "Clock", "DummyClock", "AbletonLinkClock", "MidiNoteInstance", "Metronome", "MetronomeConfig"]

isobar/timelines/metronome.py

@@ -9,6 +9,7 @@ class MetronomeConfig:
     type: str = "midi"
 
     midi_output_device: Any = None
+    midi_channel: int = 0
     midi_note_major: int = 72
     midi_note_minor: int = 60
     midi_velocity_major: int = 64
@@ -45,9 +46,12 @@ def tick(self):
             velocity = self.config.midi_velocity_minor
 
         if note is not None:
-            self.output_device.note_on(note=note, velocity=velocity)
+            self.output_device.note_on(note=note,
+                                       velocity=velocity,
+                                       channel=self.config.midi_channel)
             def note_off_callback():
-                self.output_device.note_off(note=note)
+                self.output_device.note_off(note=note,
+                                            channel=self.config.midi_channel)
             self.timeline._schedule_action(note_off_callback, delay=self.config.midi_note_duration)
 
         self.current_tick += 1

isobar/timelines/timeline.py

@@ -891,6 +891,7 @@ def configure_metronome(self,
                             interval: float = None,
                             type: str = None,
                             midi_output_device: Any = None,
+                            midi_channel: int = None,
                             midi_note_major: int = None,
                             midi_note_minor: int = None,
                             midi_velocity_major: int = None,
@@ -906,6 +907,7 @@ def configure_metronome(self,
             type (str): specifies the type of metronome event to generate. Currently only "midi" is supported.
             midi_output_device (Any): specifies the MIDI output device to send metronome events to.
                                       If not specified, uses the timeline's default output device.
+            midi_channel (int): specifies the MIDI channel to send metronome events on.
             midi_note_major (int): specifies the MIDI note number to use for the major beat.
             midi_note_minor (int): specifies the MIDI note number to use for the minor beat.
             midi_velocity_major (int): specifies the MIDI velocity to use for the major beat.
@@ -920,6 +922,8 @@ def configure_metronome(self,
             self.metronome_config.type = type
         if midi_output_device is not None:
             self.metronome_config.midi_output_device = midi_output_device
+        if midi_channel is not None:
+            self.metronome_config.midi_channel = midi_channel
         if midi_note_major is not None:
             self.metronome_config.midi_note_major = midi_note_major
         if midi_note_minor is not None: