GNU Radio 3.6.1 C++ API
pager_flex_parse.h
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1 /*
2  * Copyright 2006 Free Software Foundation, Inc.
3  *
4  * This file is part of GNU Radio
5  *
6  * GNU Radio is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 3, or (at your option)
9  * any later version.
10  *
11  * GNU Radio is distributed in the hope that it will be useful,
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13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with GNU Radio; see the file COPYING. If not, write to
18  * the Free Software Foundation, Inc., 51 Franklin Street,
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20  */
21 
22 #ifndef INCLUDED_PAGER_FLEX_PARSE_H
23 #define INCLUDED_PAGER_FLEX_PARSE_H
24 
25 #include <pager_api.h>
26 #include <gr_sync_block.h>
27 #include <gr_msg_queue.h>
28 #include <pageri_flex_modes.h>
29 #include <sstream>
30 
31 class pager_flex_parse;
33 
34 PAGER_API pager_flex_parse_sptr pager_make_flex_parse(gr_msg_queue_sptr queue, float freq);
35 
36 #define FIELD_DELIM ((unsigned char)128)
37 
38 /*!
39  * \brief flex parse description
40  * \ingroup pager_blk
41  */
42 class PAGER_API pager_flex_parse : public gr_sync_block
43 {
44 private:
45  // Constructors
46  friend PAGER_API pager_flex_parse_sptr pager_make_flex_parse(gr_msg_queue_sptr queue, float freq);
47  pager_flex_parse(gr_msg_queue_sptr queue, float freq);
48 
49  std::ostringstream d_payload;
50  gr_msg_queue_sptr d_queue; // Destination for decoded pages
51 
52  int d_count; // Count of received codewords
53  gr_int32 d_datawords[88]; // 11 blocks of 8 32-bit words
54 
55  page_type_t d_type; // Current page type
56  int d_capcode; // Current page destination address
57  bool d_laddr; // Current page has long address
58  float d_freq; // Channel frequency
59 
60  void parse_data(); // Handle a frame's worth of data
61  void parse_capcode(gr_int32 aw1, gr_int32 aw2);
62  void parse_alphanumeric(int mw1, int mw2, int j);
63  void parse_numeric(int mw1, int mw2, int j);
64  void parse_tone_only();
65  void parse_unknown(int mw1, int mw2);
66 
67 public:
68  int work(int noutput_items,
69  gr_vector_const_void_star &input_items,
70  gr_vector_void_star &output_items);
71 };
72 
73 #endif /* INCLUDED_PAGER_FLEX_PARSE_H */