GNU Radio 3.6.5 C++ API

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:
gr_sync_interpolator gr_sync_block gr_block gr_basic_block gr_msg_accepter gruel::msg_accepter

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)

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.

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:
ninputsnumber of input streams connected
noutputsnumber 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.


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]

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