/usr/include/gnuradio/dtv/atsc_consts.h is in gnuradio-dev 3.7.9.1-2ubuntu1.
This file is owned by root:root, with mode 0o644.
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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 | /* -*- c++ -*- */
/*
* Copyright 2014 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_DTV_ATSC_CONSTS_H
#define INCLUDED_DTV_ATSC_CONSTS_H
#include <gnuradio/dtv/api.h>
namespace gr {
namespace dtv {
// These will go into an mpeg_consts.h once other mod/demods are done
static const int ATSC_MPEG_DATA_LENGTH = 187;
static const int ATSC_MPEG_PKT_LENGTH = 188; // sync + data
static const int ATSC_MPEG_RS_ENCODED_LENGTH = 207;
static const int MPEG_SYNC_BYTE = 0x47;
static const int MPEG_TRANSPORT_ERROR_BIT = 0x80; // top bit of byte after SYNC
// ATSC specific constants
static const double ATSC_SYMBOL_RATE = 4.5e6/286*684; // ~10.76 MHz
static const double ATSC_DATA_SEGMENT_RATE = ATSC_SYMBOL_RATE/832; // ~12.935 kHz
static const int ATSC_DATA_SEGMENT_LENGTH = 832; // includes 4 sync symbols at beginning
static const int ATSC_DSEGS_PER_FIELD = 312; // regular data segs / field
} /* namespace dtv */
} /* namespace gr */
#endif /* INCLUDED_DTV_ATSC_CONSTS_H */
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