Class: Ariblib::CommonDataTable

Inherits:
ProgramSpecificInformation show all
Defined in:
lib/ariblib/ProgramSpecificInformation.rb

Overview

< 1Kbyte

Instance Attribute Summary

Attributes inherited from ProgramSpecificInformation

#contents

Instance Method Summary collapse

Methods inherited from ProgramSpecificInformation

#arib_to_utf8, #descriptor, #init_buf, #initialize, #set, #set_buf

Constructor Details

This class inherits a constructor from Ariblib::ProgramSpecificInformation

Instance Method Details

#parse_buf ⇒ Object 



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# File 'lib/ariblib/ProgramSpecificInformation.rb', line 266

def parse_buf
  ret=nil
  bs=BitStream.new(@buf)
  table_id                        =bs.read 8 #uimsbf
  section_syntax_indicator        =bs.read 1 #bslbf
  reserved_future_use             =bs.read 1 #bslbf
  reserved                        =bs.read 2 #bslbf
  section_length                  =bs.read 12 #uimsbf

  download_data_id    =bs.read 16 #uimsbf
  reserved            =bs.read 2 #bslbf
  version_number      =bs.read 5 #uimsbf
  current_next_indicator =bs.read 1 #bslbf
  section_number      =bs.read 8 #uimsbf
  last_section_number =bs.read 8 #uimsbf
  original_network_id =bs.read 16 #uimsbf
  data_type           =bs.read 8 #uimsbf =0x01
  reserved_future_use =bs.read 4 #bslbf
  descriptors_loop_length =bs.read 12 #uimsbf
  desc=descriptor(bs,descriptors_loop_length)

  ret = 'ddid=%04x vid=%02x onid=%04x type=%02x' % [
      download_data_id,
      version_number,
      original_network_id,
      data_type]

  if data_type == 0x01
    logo_type            =bs.read 8 #uimsbf
    reserved_future_use  =bs.read 7 #bslbf
    logo_id              =bs.read 9 #uimsbf
    reserved_future_use  =bs.read 4 #bslbf
    logo_version         =bs.read 12 #uimsbf
    data_size            =bs.read 16 #uimsbf
    data_byte            =bs.str data_size
    ret = ['ddid=%04x vid=%02x onid=%04x type=%02x loid=%02x lver=%03x dt=%s' % [
      download_data_id,
      version_number,
      original_network_id,
      logo_type,logo_id,logo_version,data_byte],desc]
    
  else
    len=(section_length+3)-10-descriptors_loop_length-4
    data_module_byte =bs.str len
  end

  cCRC_32                         =bs.read 32 #rpchof
  ret
end