Class: LibSL::LLPacketNumber

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(number) ⇒ LLPacketNumber

Returns a new instance of LLPacketNumber.



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# File 'lib/types.rb', line 33

def initialize(number)
	@number = number
	if @number < 0xff then
		@frequency = :high
	elsif @number < 0xffff then
		@frequency = :medium
	elsif @number < 0xfffffffa then
		@frequency = :low
	else
		@frequency = :fixed
	end
end

Instance Attribute Details

#frequency ⇒ Object

Returns the value of attribute frequency.



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# File 'lib/types.rb', line 32

def frequency
  @frequency
end

#number ⇒ Object

Returns the value of attribute number.



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# File 'lib/types.rb', line 32

def number
  @number
end

Class Method Details

.decode(data) ⇒ Object 



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# File 'lib/types.rb', line 4

def self.decode(data)
	data = data.unpack('C1a*')
	num = data.shift()
	unless num < 0xff then
		data = data[0].unpack('C1a*')
		num = (num << 8) + data.shift()
	end
	unless num < 0xffff then
		data = data[0].unpack('C2a*')
		num = (num << 16) + (data.shift() << 8) + data.shift()
	end
	if [*data].length > 0 then
		data = data[0]
	else
		data = nil
	end
	return self.new(num), data
end

Instance Method Details

#encode ⇒ Object 



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# File 'lib/types.rb', line 23

def encode()
	case @frequency
	when :high then data = [@number].pack('C')
	when :medium then data = [@number].pack('n')
	else data = [@number].pack('N')
	end
	return data
end