atsci_viterbi_decoder Class Reference

fancy, schmancy 12-way interleaved viterbi decoder for ATSC More...

#include <atsci_viterbi_decoder.h>

List of all members.

Public Member Functions
	atsci_viterbi_decoder ()
	~atsci_viterbi_decoder ()
void	reset ()
	reset all decoder states
void	decode (atsc_mpeg_packet_rs_encoded out[NCODERS], const atsc_soft_data_segment in[NCODERS])
Static Public Attributes
static const int	NCODERS = 12
Protected Types
typedef interleaver_fifo < unsigned char >	fifo_t
Protected Member Functions
void	decode_helper (unsigned char out[OUTPUT_SIZE], const float in[INPUT_SIZE])
Protected Attributes
single_viterbi_t	viterbi [NCODERS]
fifo_t *	fifo [NCODERS]
Static Protected Attributes
static const int	SEGMENT_SIZE = ATSC_MPEG_RS_ENCODED_LENGTH
static const int	OUTPUT_SIZE = (SEGMENT_SIZE * 12)
static const int	INPUT_SIZE = (ATSC_DATA_SEGMENT_LENGTH * 12)

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Detailed Description

fancy, schmancy 12-way interleaved viterbi decoder for ATSC

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Member Typedef Documentation

typedef interleaver_fifo<unsigned char> atsci_viterbi_decoder::fifo_t [protected]

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Constructor & Destructor Documentation

atsci_viterbi_decoder::atsci_viterbi_decoder

(

)

atsci_viterbi_decoder::~atsci_viterbi_decoder

(

)

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Member Function Documentation

void atsci_viterbi_decoder::decode	(	atsc_mpeg_packet_rs_encoded	out[NCODERS],
		const atsc_soft_data_segment	in[NCODERS]
	)

Take 12 data segments of soft decisions (floats) and produce 12 RS encoded data segments. We work in groups of 12 because that's the smallest number of segments that composes a single full cycle of the decoder mux.

void atsci_viterbi_decoder::decode_helper	(	unsigned char	out[OUTPUT_SIZE],
		const float	in[INPUT_SIZE]
	)		[protected]

void atsci_viterbi_decoder::reset

(

)

reset all decoder states

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Member Data Documentation

fifo_t* atsci_viterbi_decoder::fifo[NCODERS] [protected]

const int atsci_viterbi_decoder::INPUT_SIZE = (ATSC_DATA_SEGMENT_LENGTH * 12) [static, protected]

const int atsci_viterbi_decoder::NCODERS = 12 [static]

const int atsci_viterbi_decoder::OUTPUT_SIZE = (SEGMENT_SIZE * 12) [static, protected]

const int atsci_viterbi_decoder::SEGMENT_SIZE = ATSC_MPEG_RS_ENCODED_LENGTH [static, protected]

single_viterbi_t atsci_viterbi_decoder::viterbi[NCODERS] [protected]

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

• atsci_viterbi_decoder.h