gr-baz Package
atsc_field_sync_mux.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 #ifndef INCLUDED_ATSC_FIELD_SYNC_MUX_H
23 #define INCLUDED_ATSC_FIELD_SYNC_MUX_H
24 
25 #include <atsc_api.h>
26 #include <gr_sync_block.h>
27 #include <atsc_types.h>
28 
31 
33 
34 /*!
35  * \brief Insert ATSC Field Syncs as required (atsc_data_segment --> atsc_data_segment)
36  * \ingroup atsc
37  *
38  * input: atsc_data_segment; output: atsc_data_segment
39  */
41 {
43 
45 
46 public:
47  void forecast (int noutput_items, gr_vector_int &ninput_items_required);
48  int work (int noutput_items,
49  gr_vector_const_void_star &input_items,
50  gr_vector_void_star &output_items);
51 
52 
53  static const int N_SAVED_SYMBOLS = 12;
54 
55  void reset() { /* nop */ }
56 
57 protected:
60  unsigned char d_saved_symbols[N_SAVED_SYMBOLS];
61 };
62 
63 
64 #endif /* INCLUDED_ATSC_FIELD_SYNC_MUX_H */