3 * Copyright 2004 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
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_IO_SIGNATURE_H
24 #define INCLUDED_IO_SIGNATURE_H
26 #include <gr_runtime.h>
29 * \brief i/o signature for input and output ports.
31 * For now, we restrict all streams to be the same type.
32 * We can fix this later.
35 class gr_io_signature {
38 static const int IO_INFINITE = -1;
42 int min_streams () const { return d_min_streams; }
43 int max_streams () const { return d_max_streams; }
44 size_t sizeof_stream_item (int index) const { return d_sizeof_stream_item; }
46 // ----------------------------------------------------------------------------
52 size_t d_sizeof_stream_item;
54 gr_io_signature (int min_streams, int max_streams, size_t sizeof_stream_item);
56 friend gr_io_signature_sptr gr_make_io_signature (int min_streams,
58 size_t sizeof_stream_item);
62 gr_make_io_signature (int min_streams, int max_streams, size_t sizeof_stream_item);
65 #endif /* INCLUDED_IO_SIGNATURE_H */