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/* -*- 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., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef _ATSC_SYMINFO_H_
#define _ATSC_SYMINFO_H_
namespace atsc {
static const unsigned int SI_SEGMENT_NUM_MASK = 0x1ff;
static const unsigned int SI_FIELD_SYNC_SEGMENT_NUM = SI_SEGMENT_NUM_MASK; // conceptually -1
struct syminfo {
unsigned int symbol_num : 10; // 0..831
unsigned int segment_num : 9; // 0..311 and SI_FIELD_SYNC_SEGMENT_NUM
unsigned int field_num : 1; // 0..1
unsigned int valid : 1; // contents are valid
};
static inline bool
tag_is_start_field_sync (syminfo tag)
{
return tag.symbol_num == 0 && tag.segment_num == SI_FIELD_SYNC_SEGMENT_NUM && tag.valid;
}
static inline bool
tag_is_start_field_sync_1 (syminfo tag)
{
return tag_is_start_field_sync (tag) && tag.field_num == 0;
}
static inline bool
tag_is_start_field_sync_2 (syminfo tag)
{
return tag_is_start_field_sync (tag) && tag.field_num == 1;
}
}
#endif /* _ATSC_SYMINFO_H_ */
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