Class: Ariblib::TransportStreamFile

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

Overview

TSファイル

Constant Summary collapse

Default_payload = 
{
	#0x0000 => ProgramAssociationTable.new,
	#0x0001 => ConditionalAccessTable.new,
	0x0012 => EventInformationTable.new,
	0x0011 => ServiceDescriptionTable.new,
	0x0010 => NetworkInformationTable.new,
	0x0014 => TimeOffsetTable.new,
	0x0029 => CommonDataTable.new,
}
ReadSize = 
188*20

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename, payload_list = Default_payload) ⇒ TransportStreamFile

Returns a new instance of TransportStreamFile.



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# File 'lib/ariblib/TransportStreamFile.rb', line 62

def initialize(filename,payload_list=Default_payload)
	@file=open(filename,'rb')
	@bs=BitStream.new(@file.read(ReadSize))
	@payload=payload_list
	@payload.default=TransportStreamPacket.new
	@payload.merge!(payload_list)
	@payload_ap=Hash.new(0)
	@packet_count=0
end

Instance Attribute Details

#adaptation_field_control ⇒ Object (readonly)

Returns the value of attribute adaptation_field_control.



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# File 'lib/ariblib/TransportStreamFile.rb', line 42

def adaptation_field_control
  @adaptation_field_control
end

#bs ⇒ Object (readonly)

Returns the value of attribute bs.



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# File 'lib/ariblib/TransportStreamFile.rb', line 47

def bs
  @bs
end

#continuity_counter ⇒ Object (readonly)

Returns the value of attribute continuity_counter.



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# File 'lib/ariblib/TransportStreamFile.rb', line 48

def continuity_counter
  @continuity_counter
end

#packet_start_pos ⇒ Object (readonly)

Returns the value of attribute packet_start_pos.



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# File 'lib/ariblib/TransportStreamFile.rb', line 43

def packet_start_pos
  @packet_start_pos
end

#payload ⇒ Object (readonly)

Returns the value of attribute payload.



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# File 'lib/ariblib/TransportStreamFile.rb', line 46

def payload
  @payload
end

#payload_ap ⇒ Object (readonly)

Returns the value of attribute payload_ap.



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# File 'lib/ariblib/TransportStreamFile.rb', line 40

def payload_ap
  @payload_ap
end

#payload_length ⇒ Object (readonly)

Returns the value of attribute payload_length.



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# File 'lib/ariblib/TransportStreamFile.rb', line 50

def payload_length
  @payload_length
end

#payload_unit_start_indicator ⇒ Object (readonly)

Returns the value of attribute payload_unit_start_indicator.



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# File 'lib/ariblib/TransportStreamFile.rb', line 49

def payload_unit_start_indicator
  @payload_unit_start_indicator
end

#pid ⇒ Object (readonly)

Returns the value of attribute pid.



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# File 'lib/ariblib/TransportStreamFile.rb', line 41

def pid
  @pid
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/ariblib/TransportStreamFile.rb', line 76

def close
	@file.close
end

#eof? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ariblib/TransportStreamFile.rb', line 72

def eof?
	@file.eof? && (@bs.lest <= 0)
end

#sync ⇒ Object 



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# File 'lib/ariblib/TransportStreamFile.rb', line 80

def sync
	while(@bs.lest>0 and (c=@bs.read(8))!=0x47) do
	end
	return false if @bs.lest<=0
	@bs.pos-=8
	true
end

#transport_packet ⇒ Object 



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# File 'lib/ariblib/TransportStreamFile.rb', line 88

def transport_packet
	if @bs.lest <= 0
		tmp=@file.read(ReadSize)
		return nil unless tmp
		@bs=BitStream.new(tmp)
	end
	packet_start_pos              = @bs.pos
	sync_byte                     = @bs.getc
	return :async unless sync_byte==0x47
	tmp                           = @bs.getc
	tmp=(tmp<<8)|                   @bs.getc
	#transport_error_indicator     = @bs.read  1 #bslbf
	#@payload_unit_start_indicator = @bs.read  1 #bslbf
	#transport_priority            = @bs.read  1 #bslbf
	#@pid                          = @bs.read  13 #uimsbf
	transport_error_indicator     = tmp & 0x8000 #1 bslbf
	@payload_unit_start_indicator = tmp & 0x4000 #1 bslbf
	transport_priority            = tmp & 0x2000 #1 bslbf
	@pid                          = tmp & 0x1fff #13 uimsbf
	tmp                           = @bs.getc
	#transport_scrambling_control  = @bs.read  2 #bslbf
	#@adaptation_field_control     = @bs.read  2 #bslbf
	#@continuity_counter           = @bs.read  4 #uimsbf
	transport_scrambling_control  = tmp & 0xc0 #2 bslbf
	adaptation_field_control1     = tmp & 0x20 #2 bslbf
	adaptation_field_control2     = tmp & 0x10 #2 bslbf
	@continuity_counter           = tmp & 0x0f #4 uimsbf
	if(adaptation_field_control1 !=0 )
		#adaptation_field()
		@adaptation_field_length    = @bs.getc
		@adaptation_field_length   += 1 #uimsbf
		@adaptation_pos=@bs.pos
		@bs.pos+=@adaptation_field_length
	end
	count = packet_start_pos+188*8
	@payload_length=((count)-@bs.pos)/8
	if(adaptation_field_control2 !=0 )
		@payload[@pid].set(self)
		@payload_ap[@pid]+=1
	end
	@bs.pos=count
	true
end