Class: Ariblib::TimeOffsetTable

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 231

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
	jst_time                        =bs.read 40 #bslbf
	if table_id == 0x73
		reserved  =bs.read 4 #bslbf
		descriptors_loop_length  =bs.read 12 #uimsbf
		desc=descriptor(bs,descriptors_loop_length)
		ret=[jst_time,desc]
	else
		ret=[jst_time]
	end
	cCRC_32                         =bs.read 32 #rpchof
	ret
end

#to_datetime(n = 0) ⇒ Object 



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# File 'lib/ariblib/ProgramSpecificInformation.rb', line 251

def to_datetime(n=0)
	dat=@contents[n]
	return nil unless dat
	jst=dat[0]
	sec1  =(jst>> 0)&0x0f
	sec10 =(jst>> 4)&0x0f
	min1  =(jst>> 8)&0x0f
	min10 =(jst>>12)&0x0f
	hour1 =(jst>>16)&0x0f
	hour10=(jst>>20)&0x0f
	mjd   =(jst>>24)+2400001
	return DateTime.jd(mjd,hour10*10+hour1,min10*10+min1,sec10*10+sec1)#+Rational(1,24*60)
end