3 * Copyright 2005 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.
27 #include <gr_unpack_k_bits_bb.h>
28 #include <gr_io_signature.h>
32 gr_unpack_k_bits_bb_sptr gr_make_unpack_k_bits_bb (unsigned k)
34 return gr_unpack_k_bits_bb_sptr (new gr_unpack_k_bits_bb (k));
38 gr_unpack_k_bits_bb::gr_unpack_k_bits_bb (unsigned k)
39 : gr_sync_interpolator ("unpack_k_bits_bb",
40 gr_make_io_signature (1, 1, sizeof (unsigned char)),
41 gr_make_io_signature (1, 1, sizeof (unsigned char)),
46 throw std::out_of_range ("interpolation must be > 0");
49 gr_unpack_k_bits_bb::~gr_unpack_k_bits_bb ()
54 gr_unpack_k_bits_bb::work (int noutput_items,
55 gr_vector_const_void_star &input_items,
56 gr_vector_void_star &output_items)
58 const unsigned char *in = (const unsigned char *) input_items[0];
59 unsigned char *out = (unsigned char *) output_items[0];
62 for (unsigned int i = 0; i < noutput_items/d_k; i++){
63 unsigned int t = in[i];
64 for (int j = d_k - 1; j >= 0; j--)
65 out[n++] = (t >> j) & 0x01;
68 assert(n == noutput_items);