Class: Portmidi::Output

Inherits:
Object
  • Object
show all
Defined in:
lib/portmidi/output.rb

Instance Method Summary collapse

Constructor Details

#initialize(device_id = 0, buffer_size = 4, latency = 0) ⇒ Output

Returns a new instance of Output.



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# File 'lib/portmidi/output.rb', line 3

def initialize(device_id = 0, buffer_size = 4, latency = 0)
  out_stream_ptr = FFI::MemoryPointer.new(:pointer)
  if (errnum = PM_Map.Pm_OpenOutput(out_stream_ptr, device_id, nil, buffer_size, nil, nil, latency)) == 0
    @out_stream = out_stream_ptr.read_pointer
  else
    raise Portmidi::DeviceError, errnum, "Could not open Device #{device_id} as output device"
  end
end

Instance Method Details

#write_short(status, data1, data2) ⇒ Object 



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# File 'lib/portmidi/output.rb', line 12

def write_short(status, data1, data2)
  PM_Map.Pm_WriteShort(@out_stream, 0, PM_Map.encode_message(status, data1, data2))
end