Class: RecordHeader

Inherits:
FitObject show all
Defined in:
lib/fitreader/record_header.rb

Constant Summary

Constants included from Unpack

Unpack::MASKS

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from FitObject

#to_h

Methods included from Unpack

#read_bit, #read_bits, #read_multiple, #readbytes

Constructor Details

#initialize(io) ⇒ RecordHeader

Returns a new instance of RecordHeader.



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# File 'lib/fitreader/record_header.rb', line 4

def initialize(io)
  byte = io.readbyte

  @header_type = read_bit(byte, 7)             # 0 = normal, 1 = timestamp
  if @header_type.zero?
    @message_type = read_bit(byte, 6)          # 1 = definition, 0 = data
    @message_type_specific = read_bit(byte, 5) # 1 = developer fields
    @reserved = read_bit(byte, 4)
    @local_message_type = read_bits(byte, 3..0)
  else
    @local_message_type = read_bits(byte, 6..5)
    @time_offset = read_bits(byte, 4..0)
  end
end

Instance Attribute Details

#header_type ⇒ Object

Returns the value of attribute header_type.



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# File 'lib/fitreader/record_header.rb', line 2

def header_type
  @header_type
end

#local_message_type ⇒ Object

Returns the value of attribute local_message_type.



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# File 'lib/fitreader/record_header.rb', line 2

def local_message_type
  @local_message_type
end

#message_type ⇒ Object

Returns the value of attribute message_type.



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# File 'lib/fitreader/record_header.rb', line 2

def message_type
  @message_type
end

#message_type_specific ⇒ Object

Returns the value of attribute message_type_specific.



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# File 'lib/fitreader/record_header.rb', line 2

def message_type_specific
  @message_type_specific
end

#time_offset ⇒ Object

Returns the value of attribute time_offset.



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# File 'lib/fitreader/record_header.rb', line 2

def time_offset
  @time_offset
end

Instance Method Details

#data? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fitreader/record_header.rb', line 23

def data?
  @header_type.zero? && @message_type.zero?
end

#definition? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fitreader/record_header.rb', line 19

def definition?
  @header_type.zero? && @message_type == 1
end

#timestamp? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fitreader/record_header.rb', line 27

def timestamp?
  @header_type == 1
end