3 * Copyright 2006 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
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8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
23 #ifndef INCLUDED_GR_STREAM_MUX_H
24 #define INCLUDED_GR_STREAM_MUX_H
31 typedef boost::shared_ptr<gr_stream_mux> gr_stream_mux_sptr;
34 * \brief Creates a stream muxing block to multiplex many streams into
35 * one with a specified format.
37 * \param itemsize the item size of the stream
38 * \param length a vector (list/tuple) specifying the number of
39 * items from each stream the mux together.
40 * Warning: this requires that at least as many items
41 * per stream are available or the system will wait
42 * indefinitely for the items.
47 gr_make_stream_mux (size_t itemsize, const std::vector<int> &lengths);
51 * \brief Stream muxing block to multiplex many streams into
52 * one with a specified format.
54 * Muxes N streams together producing an output stream that
55 * contains N0 items from the first stream, N1 items from the second,
58 * [N0, N1, N2, ..., Nm, N0, N1, ...]
61 class gr_stream_mux : public gr_block
63 friend gr_stream_mux_sptr
64 gr_make_stream_mux (size_t itemsize, const std::vector<int> &lengths);
67 gr_stream_mux (size_t itemsize, const std::vector<int> &lengths);
71 unsigned int d_stream; // index of currently selected stream
72 int d_residual; // number if items left to put into current stream
73 gr_vector_int d_lengths; // number if items to pack per stream
75 void increment_stream();
80 void forecast (int noutput_items, gr_vector_int &ninput_items_required);
82 int general_work(int noutput_items,
83 gr_vector_int &ninput_items,
84 gr_vector_const_void_star &input_items,
85 gr_vector_void_star &output_items);