diff options
Diffstat (limited to 'gr-atsc/src/lib/atsc_consts.h')
| -rw-r--r-- | gr-atsc/src/lib/atsc_consts.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gr-atsc/src/lib/atsc_consts.h b/gr-atsc/src/lib/atsc_consts.h new file mode 100644 index 000000000..197ec57b6 --- /dev/null +++ b/gr-atsc/src/lib/atsc_consts.h @@ -0,0 +1,42 @@ +/* -*- c++ -*- */ +/* + * Copyright 2002 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 2, 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., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef _ATSC_CONSTS_H_ +#define _ATSC_CONSTS_H_ + +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_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 ATSC_DATA_SEGMENT_LENGTH = 832; // includes 4 sync symbols at beginning +static const int ATSC_DSEGS_PER_FIELD = 312; // regular data segs / field + + +static const int MPEG_SYNC_BYTE = 0x47; + +static const int MPEG_TRANSPORT_ERROR_BIT = 0x80; // top bit of byte after SYNC + + +#endif // _ATSC_CONSTS_H_ |