GNU Radio Manual and C++ API Reference  3.7.11
The Free & Open Software Radio Ecosystem
freedv_rx_ss.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2016 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,
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21  */
22 
23 #ifndef INCLUDED_VOCODER_FREEDV_RX_H
24 #define INCLUDED_VOCODER_FREEDV_RX_H
25 
26 #include <gnuradio/vocoder/api.h>
28 #include <gnuradio/block.h>
29 
30 namespace gr {
31  namespace vocoder {
32 
33  /*!
34  * \brief FreeDV demodulator
35  * \ingroup audio_blk
36  *
37  * Input: 16-bit short values of an audio signal with sampling rate 8 kHz.
38  *
39  * Output: 16-bit short values of an audio signal with sampling rate 8 kHz.
40  *
41  * See also gr::vocoder::freedv_tx_ss.
42  */
43  class VOCODER_API freedv_rx_ss : virtual public gr::block
44  {
45  public:
46  typedef boost::shared_ptr<freedv_rx_ss> sptr;
47 
48  /*!
49  * \brief Make FreeDV modem demodulator block.
50  *
51  * \param mode Operating Mode designation
52  * \param squelch_thresh FreeDV modem squelch threshold value
53  */
54  static sptr make(int mode=freedv_api::MODE_1600, float squelch_thresh=-100.0);
55 
56  virtual void set_squelch_thresh(float squelch_thresh) = 0;
57  virtual float squelch_thresh() = 0;
58  };
59 
60  } /* namespace vocoder */
61 } /* namespace gr */
62 
63 #endif /* INCLUDED_VOCODER_FREEDV_RX_H */
boost::shared_ptr< freedv_rx_ss > sptr
Definition: freedv_rx_ss.h:46
Include this header to use the message passing features.
Definition: basic_block.h:45
#define VOCODER_API
Definition: gr-vocoder/include/gnuradio/vocoder/api.h:30
The abstract base class for all &#39;terminal&#39; processing blocks.A signal processing flow is constructed ...
Definition: block.h:60
FreeDV demodulatorInput: 16-bit short values of an audio signal with sampling rate 8 kHz...
Definition: freedv_rx_ss.h:43