blob: 928035d0e78496253a14e07458d193cbced4a5e6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/* -*- c++ -*- */
/*
* Copyright 2006,2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_GR_DIFF_DECODER_BB_H
#define INCLUDED_GR_DIFF_DECODER_BB_H
#include <digital_api.h>
#include <gr_sync_block.h>
class digital_diff_decoder_bb;
typedef boost::shared_ptr<digital_diff_decoder_bb> digital_diff_decoder_bb_sptr;
DIGITAL_API digital_diff_decoder_bb_sptr
digital_make_diff_decoder_bb(unsigned int modulus);
/*!
* \brief y[0] = (x[0] - x[-1]) % M
* \ingroup coding_blk
*
* Uses current and previous symbols and the alphabet modulus to
* perform differential decoding.
*/
class DIGITAL_API digital_diff_decoder_bb : public gr_sync_block
{
friend DIGITAL_API digital_diff_decoder_bb_sptr
digital_make_diff_decoder_bb(unsigned int modulus);
digital_diff_decoder_bb(unsigned int modulus);
unsigned int d_modulus;
public:
int work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
#endif
|
