3 * Copyright 2002 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
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)
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.
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.
23 #ifndef _ATSC_CONSTS_H_
24 #define _ATSC_CONSTS_H_
26 static const double ATSC_SYMBOL_RATE = 4.5e6 / 286 * 684; // ~10.76 MHz
27 static const double ATSC_DATA_SEGMENT_RATE = ATSC_SYMBOL_RATE / 832; // ~12.935 kHz
30 static const int ATSC_MPEG_DATA_LENGTH = 187;
31 static const int ATSC_MPEG_PKT_LENGTH = 188; // sync + data
32 static const int ATSC_MPEG_RS_ENCODED_LENGTH = 207;
33 static const int ATSC_DATA_SEGMENT_LENGTH = 832; // includes 4 sync symbols at beginning
34 static const int ATSC_DSEGS_PER_FIELD = 312; // regular data segs / field
37 static const int MPEG_SYNC_BYTE = 0x47;
39 static const int MPEG_TRANSPORT_ERROR_BIT = 0x80; // top bit of byte after SYNC
42 #endif // _ATSC_CONSTS_H_