Packet/Frame Operators

Classes
class	gr::digital::burst_shaper< T >
	Burst shaper block for applying burst padding and ramping. More...
class	gr::digital::correlate_access_code_bb
	Examine input for specified access code, one bit at a time. More...
class	gr::digital::correlate_access_code_bb_ts
	Examine input for specified access code, one bit at a time. More...
class	gr::digital::correlate_access_code_ff_ts
	Examine input for specified access code, one bit at a time. More...
class	gr::digital::correlate_access_code_tag_bb
	Examine input for specified access code, one bit at a time. More...
class	gr::digital::correlate_access_code_tag_ff
	Examine input for specified access code, one bit at a time. More...
class	gr::digital::crc32_async_bb
	Byte-stream CRC block for async messages. More...
class	gr::digital::crc32_bb
	Byte-stream CRC block. More...
class	gr::digital::framer_sink_1
	Given a stream of bits and access_code flags, assemble packets. More...
class	gr::digital::header_buffer
	Helper class for handling payload headers. More...
class	gr::digital::header_format_base
	Base header formatter class. More...
class	gr::digital::header_format_counter
	Header formatter that adds the payload bits/symbol format and a packet number counter. More...
class	gr::digital::header_format_crc
	Header formatter that includes the payload length, packet number, and a CRC check on the header. More...
class	gr::digital::header_format_default
	Default header formatter for PDU formatting. More...
class	gr::digital::header_format_ofdm
	Header formatter that includes the payload length, packet number, and a CRC check on the header. More...
class	gr::digital::header_payload_demux
	Header/Payload demuxer (HPD). More...
class	gr::digital::packet_header_default
	Default header formatter for digital packet transmission. More...
class	gr::digital::packet_headergenerator_bb
	Generates a header for a tagged, streamed packet. More...
class	gr::digital::packet_headerparser_b
	Post header metadata as a PMT. More...
class	gr::digital::packet_sink
	process received bits looking for packet sync, header, and process bits into packet More...
class	gr::digital::protocol_formatter_async
	Uses a header format object to append a header onto a PDU. More...
class	gr::digital::protocol_formatter_bb
	Uses a header format object to create a header from a tagged stream packet. More...
class	gr::digital::protocol_parser_b
	Block that synchronizes to a header based on a header format object class. Designed to accept hard bits and produce PDUs with packed bytes (pmt::u8vector). More...
class	gr::digital::simple_correlator
	inverse of simple_framer (more or less) More...
class	gr::digital::simple_framer
	add sync field, seq number and command field to payload More...

Functions
DIGITAL_API unsigned int	gr::digital::update_crc32 (unsigned int crc, const unsigned char *buf, size_t len)
	update running CRC-32 More...

Detailed Description

Function Documentation

update_crc32()

DIGITAL_API unsigned int gr::digital::update_crc32	(	unsigned int	crc,
		const unsigned char *	buf,
		size_t	len
	)

update running CRC-32

Update a running CRC with the bytes buf[0..len-1] The CRC should be initialized to all 1's, and the transmitted value is the 1's complement of the final running CRC. The resulting CRC should be transmitted in big endian order.