gr_chunks_to_symbols_if Class Reference

Map a stream of symbol indexes (unpacked bytes or shorts) to stream of float or complex onstellation points.in D dimensions (D = 1 by default)input: stream of int; output: stream of float. More...

#include <gr_chunks_to_symbols_if.h>

Inheritance diagram for gr_chunks_to_symbols_if:

List of all members.

Public Member Functions
int	D () const
std::vector< float >	symbol_table () const
int	work (int noutput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
	just like gr_block::general_work, only this arranges to call consume_each for you
bool	check_topology (int ninputs, int noutputs)
	Confirm that ninputs and noutputs is an acceptable combination.
Friends
GR_CORE_API gr_chunks_to_symbols_if_sptr	gr_make_chunks_to_symbols_if (const std::vector< float > &symbol_table, const int D)

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Detailed Description

Map a stream of symbol indexes (unpacked bytes or shorts) to stream of float or complex onstellation points.in D dimensions (D = 1 by default)

input: stream of int; output: stream of float.

out[n D + k] = symbol_table[in[n] D + k], k=0,1,...,D-1

The combination of gr_packed_to_unpacked_XX followed by gr_chunks_to_symbols_XY handles the general case of mapping from a stream of bytes or shorts into arbitrary float or complex symbols.

See also:

gr_packed_to_unpacked_bb, gr_unpacked_to_packed_bb,

gr_packed_to_unpacked_ss, gr_unpacked_to_packed_ss,

gr_chunks_to_symbols_bf, gr_chunks_to_symbols_bc.

gr_chunks_to_symbols_sf, gr_chunks_to_symbols_sc.

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Member Function Documentation

bool gr_chunks_to_symbols_if::check_topology	(	int	ninputs,
		int	noutputs
	)		[inline, virtual]

Confirm that ninputs and noutputs is an acceptable combination.

Parameters:

ninputs	number of input streams connected
noutputs	number of output streams connected

Returns:

true if this is a valid configuration for this block.

This function is called by the runtime system whenever the topology changes. Most classes do not need to override this. This check is in addition to the constraints specified by the input and output gr_io_signatures.

Reimplemented from gr_basic_block.

int gr_chunks_to_symbols_if::D

(

)

const [inline]

std::vector<float> gr_chunks_to_symbols_if::symbol_table

(

)

const [inline]

int gr_chunks_to_symbols_if::work	(	int	noutput_items,
		gr_vector_const_void_star &	input_items,
		gr_vector_void_star &	output_items
	)		[virtual]

just like gr_block::general_work, only this arranges to call consume_each for you

The user must override work to define the signal processing code

Implements gr_sync_block.

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Friends And Related Function Documentation

GR_CORE_API gr_chunks_to_symbols_if_sptr gr_make_chunks_to_symbols_if	(	const std::vector< float > &	symbol_table,
		const int	D
	)		[friend]

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

• gr_chunks_to_symbols_if.h