GNU Radio 3.6.5.1 C++ API
gr_stream_mux.h
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/* -*- c++ -*- */
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/*
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* Copyright 2006 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef INCLUDED_GR_STREAM_MUX_H
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#define INCLUDED_GR_STREAM_MUX_H
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#include <
gr_core_api.h
>
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#include <
gr_block.h
>
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#include <vector>
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/*!
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* \brief Creates a stream muxing block to multiplex many streams into
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* one with a specified format.
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*
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* \param itemsize the item size of the stream
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* \param length a vector (list/tuple) specifying the number of
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* items from each stream the mux together.
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* Warning: this requires that at least as many items
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* per stream are available or the system will wait
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* indefinitely for the items.
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*
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*/
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class
gr_stream_mux
;
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typedef
boost::shared_ptr<gr_stream_mux>
gr_stream_mux_sptr
;
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GR_CORE_API
gr_stream_mux_sptr
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gr_make_stream_mux
(
size_t
itemsize
,
const
std::vector<int> &lengths);
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/*!
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* \brief Stream muxing block to multiplex many streams into
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* one with a specified format.
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*
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* Muxes N streams together producing an output stream that
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* contains N0 items from the first stream, N1 items from the second,
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* etc. and repeats:
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*
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* [N0, N1, N2, ..., Nm, N0, N1, ...]
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*/
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class
GR_CORE_API
gr_stream_mux
:
public
gr_block
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{
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friend
GR_CORE_API
gr_stream_mux_sptr
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gr_make_stream_mux
(
size_t
itemsize
,
const
std::vector<int> &lengths);
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protected
:
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gr_stream_mux
(
size_t
itemsize,
const
std::vector<int> &lengths);
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private
:
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size_t
d_itemsize;
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unsigned
int
d_stream;
// index of currently selected stream
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int
d_residual;
// number if items left to put into current stream
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gr_vector_int
d_lengths;
// number if items to pack per stream
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void
increment_stream();
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public
:
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~
gr_stream_mux
(
void
);
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void
forecast
(
int
noutput_items,
gr_vector_int
&ninput_items_required);
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int
general_work
(
int
noutput_items,
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gr_vector_int
&ninput_items,
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gr_vector_const_void_star
&input_items,
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gr_vector_void_star
&output_items);
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};
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#endif
gnuradio-core
src
lib
general
gr_stream_mux.h
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