GNU Radio 3.6.2 C++ API
gr_diff_decoder_bb.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2006 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
6  *
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)
10  * any later version.
11  *
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.
16  *
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.
21  */
22 
23 #ifndef INCLUDED_GR_DIFF_DECODER_BB_H
24 #define INCLUDED_GR_DIFF_DECODER_BB_H
25 
26 #include <gr_core_api.h>
27 #include <gr_sync_block.h>
28 
29 class gr_diff_decoder_bb;
31 
33 
34 /*!
35  * \brief y[0] = (x[0] - x[-1]) % M
36  * \ingroup coding_blk
37  *
38  * Differential decoder
39  */
41 {
42  friend GR_CORE_API gr_diff_decoder_bb_sptr gr_make_diff_decoder_bb (unsigned int modulus);
43  gr_diff_decoder_bb(unsigned int modulus);
44 
45  unsigned int d_modulus;
46 
47  public:
48  int work (int noutput_items,
49  gr_vector_const_void_star &input_items,
50  gr_vector_void_star &output_items);
51 };
52 
53 #endif