GNU Radio 3.4.0 C++ API
gr_stream_mux Class Reference

Stream muxing block to multiplex many streams into one with a specified format. More...

#include <gr_stream_mux.h>

Inheritance diagram for gr_stream_mux:

List of all members.

Public Member Functions

 ~gr_stream_mux (void)
void forecast (int noutput_items, gr_vector_int &ninput_items_required)
 Estimate input requirements given output request.
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

Protected Member Functions

 gr_stream_mux (size_t itemsize, const std::vector< int > &lengths)

Friends

gr_stream_mux_sptr gr_make_stream_mux (size_t itemsize, const std::vector< int > &lengths)

Detailed Description

Stream muxing block to multiplex many streams into one with a specified format.

Muxes N streams together producing an output stream that contains N0 items from the first stream, N1 items from the second, etc. and repeats:

[N0, N1, N2, ..., Nm, N0, N1, ...]


Constructor & Destructor Documentation

gr_stream_mux::gr_stream_mux ( size_t  itemsize,
const std::vector< int > &  lengths 
) [protected]
gr_stream_mux::~gr_stream_mux ( void  )

Member Function Documentation

void gr_stream_mux::forecast ( int  noutput_items,
gr_vector_int ninput_items_required 
) [virtual]

Estimate input requirements given output request.

Parameters:
noutput_itemsnumber of output items to produce
ninput_items_requirednumber of input items required on each input stream

Given a request to product noutput_items, estimate the number of data items required on each input stream. The estimate doesn't have to be exact, but should be close.

Reimplemented from gr_block.

int gr_stream_mux::general_work ( int  noutput_items,
gr_vector_int ninput_items,
gr_vector_const_void_star input_items,
gr_vector_void_star output_items 
) [virtual]

compute output items from input items

Parameters:
noutput_itemsnumber of output items to write on each output stream
ninput_itemsnumber of input items available on each input stream
input_itemsvector of pointers to the input items, one entry per input stream
output_itemsvector of pointers to the output items, one entry per output stream
Returns:
number of items actually written to each output stream, or -1 on EOF. It is OK to return a value less than noutput_items. -1 <= return value <= noutput_items

general_work must call consume or consume_each to indicate how many items were consumed on each input stream.

Implements gr_block.


Friends And Related Function Documentation

gr_stream_mux_sptr gr_make_stream_mux ( size_t  itemsize,
const std::vector< int > &  lengths 
) [friend]

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