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atsc_syminfo_impl.h
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/* -*- c++ -*- */
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/*
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* Copyright 2014 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef INCLUDED_GR_DTV_ATSC_SYMINFO_H
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#define INCLUDED_GR_DTV_ATSC_SYMINFO_H
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namespace
gr {
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namespace
dtv {
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namespace
atsc {
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static
const
unsigned
int
SI_SEGMENT_NUM_MASK
= 0x1ff;
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static
const
unsigned
int
SI_FIELD_SYNC_SEGMENT_NUM
=
SI_SEGMENT_NUM_MASK
;
// conceptually -1
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struct
syminfo
{
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unsigned
int
symbol_num
: 10;
// 0..831
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unsigned
int
segment_num
: 9;
// 0..311 and SI_FIELD_SYNC_SEGMENT_NUM
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unsigned
int
field_num
: 1;
// 0..1
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unsigned
int
valid
: 1;
// contents are valid
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};
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static
inline
bool
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tag_is_start_field_sync
(
syminfo
tag)
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{
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return
tag.
symbol_num
== 0 && tag.
segment_num
==
SI_FIELD_SYNC_SEGMENT_NUM
&& tag.
valid
;
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}
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static
inline
bool
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tag_is_start_field_sync_1
(
syminfo
tag)
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{
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return
tag_is_start_field_sync
(tag) && tag.
field_num
== 0;
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}
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static
inline
bool
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tag_is_start_field_sync_2
(
syminfo
tag)
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{
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return
tag_is_start_field_sync
(tag) && tag.
field_num
== 1;
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}
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}
/* namespace atsc */
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}
/* namespace dtv */
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}
/* namespace gr */
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#endif
/* INCLUDED_GR_DTV_ATSC_SYMINFO_H */
gr-dtv
lib
atsc
atsc_syminfo_impl.h
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