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 3, 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.
27 #include <gr_keep_one_in_n.h>
28 #include <gr_io_signature.h>
32 gr_make_keep_one_in_n (size_t item_size, int n)
34 return gr_keep_one_in_n_sptr (new gr_keep_one_in_n (item_size, n));
37 gr_keep_one_in_n::gr_keep_one_in_n (size_t item_size, int n)
38 : gr_block ("keep_one_in_n",
39 gr_make_io_signature (1, 1, item_size),
40 gr_make_io_signature (1, 1, item_size)),
46 gr_keep_one_in_n::set_n(int n)
56 gr_keep_one_in_n::general_work (int noutput_items,
57 gr_vector_int &ninput_items,
58 gr_vector_const_void_star &input_items,
59 gr_vector_void_star &output_items)
61 const char *in = (const char *) input_items[0];
62 char *out = (char *) output_items[0];
64 size_t item_size = input_signature ()->sizeof_stream_item (0);
68 while (ni < ninput_items[0] && no < noutput_items){
71 memcpy (out, in, item_size); // copy 1 item