GNU Radio Manual and C++ API Reference  3.7.9.2
The Free & Open Software Radio Ecosystem
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Modules Pages
filter_delay_fc.h
Go to the documentation of this file.
1 /* -*- c++ -*- */
2 /*
3  * Copyright 2004,2012 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_FILTER_FILTER_DELAY_FC_H
24 #define INCLUDED_FILTER_FILTER_DELAY_FC_H
25 
26 #include <gnuradio/filter/api.h>
27 #include <gnuradio/sync_block.h>
28 
29 namespace gr {
30  namespace filter {
31 
32  /*!
33  * \brief Filter-Delay Combination Block.
34  * \ingroup filter_blk
35  *
36  * \details
37  * The block takes one or two float stream and outputs a complex
38  * stream.
39  *
40  * If only one float stream is input, the real output is a delayed
41  * version of this input and the imaginary output is the filtered
42  * output.
43  *
44  * If two floats are connected to the input, then the real output
45  * is the delayed version of the first input, and the imaginary
46  * output is the filtered output.
47  *
48  * The delay in the real path accounts for the group delay
49  * introduced by the filter in the imaginary path. The filter taps
50  * needs to be calculated before initializing this block.
51  */
52  class FILTER_API filter_delay_fc : virtual public sync_block
53  {
54  public:
55 
56  // gr::filter::filter_delay_fc::sptr
57  typedef boost::shared_ptr<filter_delay_fc> sptr;
58 
59  /*!
60  * Build a filter with delay block.
61  */
62  static sptr make(const std::vector<float> &taps);
63  };
64 
65  } /* namespace filter */
66 } /* namespace gr */
67 
68 #endif /* INCLUDED_FILTER_FILTER_DELAY_FC_H */
boost::shared_ptr< filter_delay_fc > sptr
Definition: filter_delay_fc.h:57
Include this header to use the message passing features.
Definition: logger.h:131
synchronous 1:1 input to output with historyOverride work to provide the signal processing implementa...
Definition: sync_block.h:37
static const float taps[NSTEPS+1][NTAPS]
Definition: interpolator_taps.h:9
Filter-Delay Combination Block.
Definition: filter_delay_fc.h:52
#define FILTER_API
Definition: gr-filter/include/gnuradio/filter/api.h:30