GNU Radio 3.6.4.1 C++ API
gr_chunks_to_symbols_sf 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 short; output: stream of float. More...

#include <gr_chunks_to_symbols_sf.h>

Inheritance diagram for gr_chunks_to_symbols_sf:
gr_sync_interpolator gr_sync_block gr_block gr_basic_block gr_msg_accepter gruel::msg_accepter

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 More...
 
bool check_topology (int ninputs, int noutputs)
 Confirm that ninputs and noutputs is an acceptable combination. More...
 
- Public Member Functions inherited from gr_sync_interpolator
unsigned interpolation () const
 
void set_interpolation (unsigned interpolation)
 
void forecast (int noutput_items, gr_vector_int &ninput_items_required)
 Estimate input requirements given output request. More...
 
int general_work (int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
 compute output items from input items More...
 
int fixed_rate_ninput_to_noutput (int ninput)
 Given ninput samples, return number of output samples that will be produced. N.B. this is only defined if fixed_rate returns true. Generally speaking, you don't need to override this. More...
 
int fixed_rate_noutput_to_ninput (int noutput)
 Given noutput samples, return number of input samples required to produce noutput. N.B. this is only defined if fixed_rate returns true. Generally speaking, you don't need to override this. More...
 

Friends

GR_CORE_API
gr_chunks_to_symbols_sf_sptr 
gr_make_chunks_to_symbols_sf (const std::vector< float > &symbol_table, const int D)
 

Additional Inherited Members

- Public Types inherited from gr_block
enum  { WORK_CALLED_PRODUCE = -2, WORK_DONE = -1 }
 Magic return values from general_work. More...
 
enum  tag_propagation_policy_t { TPP_DONT = 0, TPP_ALL_TO_ALL = 1, TPP_ONE_TO_ONE = 2 }
 
- Protected Types inherited from gr_basic_block
enum  vcolor { WHITE, GREY, BLACK }
 
- Protected Member Functions inherited from gr_sync_interpolator
 gr_sync_interpolator (void)
 
 gr_sync_interpolator (const std::string &name, gr_io_signature_sptr input_signature, gr_io_signature_sptr output_signature, unsigned interpolation)
 
- Protected Attributes inherited from gr_block
std::vector< long > d_max_output_buffer
 
std::vector< long > d_min_output_buffer
 
gruel::mutex d_setlock
 

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 short; 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_sf::check_topology ( int  ninputs,
int  noutputs 
)
inlinevirtual

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_sf::D ( ) const
inline
std::vector<float> gr_chunks_to_symbols_sf::symbol_table ( ) const
inline
int gr_chunks_to_symbols_sf::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_sf_sptr gr_make_chunks_to_symbols_sf ( const std::vector< float > &  symbol_table,
const int  D 
)
friend

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