Module: Cul::Image::Properties::BigEndian

Defined in:
lib/cul_image_props/image/properties/types.rb

Instance Method Summary collapse

Instance Method Details

#byte(str, signed = false) ⇒ Object 



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# File 'lib/cul_image_props/image/properties/types.rb', line 281

def byte(str, signed=false)
  if signed
    return str[0,1].unpack('c')[0]
  else
    return str[0,1].unpack('C')[0]
  end
end

#int(str, signed = false) ⇒ Object 



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# File 'lib/cul_image_props/image/properties/types.rb', line 295

def int(str, signed=false)
  result = str[0,4].unpack('N')[0]
  if signed
    return ~ result unless result < 2147483648
  end
  return result
end

#short(str, signed = false) ⇒ Object 



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# File 'lib/cul_image_props/image/properties/types.rb', line 288

def short(str, signed=false)
  result = str[0,2].unpack('n')[0]
  if signed
    return ~ result unless result < 32768
  end
  return result
end