Class: Nibbler::MessageBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/nibbler/message_builder.rb

Constant Summary collapse

CHANNEL_MESSAGE = 
[
  {
    :status => 0x8,
    :name => :note_off,
    :nibbles => 6
  },
  {
    :status => 0x9,
    :name => :note_on,
    :nibbles => 6
  },
  {
    :status => 0xA,
    :name => :polyphonic_aftertouch,
    :nibbles => 6
  },
  {
    :status => 0xB,
    :name => :control_change,
    :nibbles => 6
  },
  {
    :status => 0xC,
    :name => :program_change,
    :nibbles => 4
  },
  {
    :status => 0xD,
    :name => :channel_aftertouch,
    :nibbles => 4
  },
  {
    :status => 0xE,
    :name => :pitch_bend,
    :nibbles => 6
  }
].freeze
SYSTEM_MESSAGE = 
[
  {
    :status => 0x1..0x6,
    :name => :system_common,
    :nibbles => 6
  },
  {
    :status => 0x8..0xF,
    :name => :system_realtime,
    :nibbles => 2
  }
].freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(library, name, num_nibbles) ⇒ MessageBuilder

Returns a new instance of MessageBuilder.



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# File 'lib/nibbler/message_builder.rb', line 72

def initialize(library, name, num_nibbles)
  @library = library
  @name = name
  @num_nibbles = num_nibbles
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/nibbler/message_builder.rb', line 56

def name
  @name
end

#num_nibbles ⇒ Object (readonly)

Returns the value of attribute num_nibbles.



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# File 'lib/nibbler/message_builder.rb', line 56

def num_nibbles
  @num_nibbles
end

Class Method Details

.build_system_exclusive(library, *message_data) ⇒ Object 



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# File 'lib/nibbler/message_builder.rb', line 58

def self.build_system_exclusive(library, *message_data)
  library.system_exclusive(*message_data)
end

.for_channel_message(library, status) ⇒ Object 



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# File 'lib/nibbler/message_builder.rb', line 67

def self.for_channel_message(library, status)
  type = CHANNEL_MESSAGE.find { |type| type[:status] == status }
  new(library, type[:name], type[:nibbles])
end

.for_system_message(library, status) ⇒ Object 



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# File 'lib/nibbler/message_builder.rb', line 62

def self.for_system_message(library, status)
  type = SYSTEM_MESSAGE.find { |type| type[:status].cover?(status) }
  new(library, type[:name], type[:nibbles])
end

Instance Method Details

#build(*message_data) ⇒ Object 



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# File 'lib/nibbler/message_builder.rb', line 78

def build(*message_data)
  @library.send(@name, *message_data)
end