atsci_randomizer Class Reference

ATSC data "whitener". More...

#include <atsci_randomizer.h>

List of all members.

Public Member Functions
	atsci_randomizer ()
void	reset ()
	reset randomizer LFSR
void	randomize (atsc_mpeg_packet_no_sync &out, const atsc_mpeg_packet &in)
	randomize (whiten) mpeg packet and remove leading MPEG-2 sync byte
void	derandomize (atsc_mpeg_packet &out, const atsc_mpeg_packet_no_sync &in)
	derandomize (de-whiten) mpeg packet and add leading MPEG-2 sync byte
unsigned int	state () const
Friends
class	qa_atsci_randomizer

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Detailed Description

ATSC data "whitener".

The data randomizer described in ATSC standard A/53B. See figure D4 on page 54.

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Constructor & Destructor Documentation

atsci_randomizer::atsci_randomizer

(

)

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Member Function Documentation

void atsci_randomizer::derandomize	(	atsc_mpeg_packet &	out,
		const atsc_mpeg_packet_no_sync &	in
	)

derandomize (de-whiten) mpeg packet and add leading MPEG-2 sync byte

void atsci_randomizer::randomize	(	atsc_mpeg_packet_no_sync &	out,
		const atsc_mpeg_packet &	in
	)

randomize (whiten) mpeg packet and remove leading MPEG-2 sync byte

void atsci_randomizer::reset

(

)

reset randomizer LFSR

must be called during the Data Segment Sync interval prior to the first data segment. I.e., the LFSR is reset prior to the first field of each VSB data frame.

unsigned int atsci_randomizer::state

(

)

const [inline]

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Friends And Related Function Documentation

friend class qa_atsci_randomizer [friend]

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The documentation for this class was generated from the following file:

• atsci_randomizer.h