Class: Deftones::Music::Midi::OutputSession

Inherits:
Object
  • Object
show all
Defined in:
lib/deftones/music/midi.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(output) ⇒ OutputSession

Returns a new instance of OutputSession.



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# File 'lib/deftones/music/midi.rb', line 289

def initialize(output)
  @output = output
  @closed = false
end

Class Method Details

.parent_status_byte(base, channel) ⇒ Object 



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# File 'lib/deftones/music/midi.rb', line 323

def self.parent_status_byte(base, channel)
  Midi.send(:status_byte, base, channel)
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/deftones/music/midi.rb', line 311

def close
  return self if @closed

  @output.close if @output.respond_to?(:close)
  @closed = true
  self
end

#closed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/deftones/music/midi.rb', line 319

def closed?
  @closed
end

#note_off(note, velocity: 0, channel: 1) ⇒ Object 



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# File 'lib/deftones/music/midi.rb', line 306

def note_off(note, velocity: 0, channel: 1)
  send([self.class.parent_status_byte(0x80, channel), Midi.send(:normalize_note, note),
        Midi.send(:normalize_data_byte, velocity)])
end

#note_on(note, velocity: 100, channel: 1) ⇒ Object 



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# File 'lib/deftones/music/midi.rb', line 301

def note_on(note, velocity: 100, channel: 1)
  send([self.class.parent_status_byte(0x90, channel), Midi.send(:normalize_note, note),
        Midi.send(:normalize_data_byte, velocity)])
end

#send(message) ⇒ Object

Raises:

  • (IOError) 


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# File 'lib/deftones/music/midi.rb', line 294

def send(message)
  raise IOError, "MIDI output session is closed" if @closed

  @output.puts(message)
  self
end