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/* -*- c++ -*- */
/*
* Copyright 2002,2006 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.
*/
#include <atsc_types.h>
#include <assert.h>
void
plinfo::delay (plinfo &out, const plinfo &in, int nsegs_of_delay)
{
assert (in.regular_seg_p ());
assert (nsegs_of_delay >= 0);
int s = in.segno ();
if (in.in_field2_p ())
s += ATSC_DSEGS_PER_FIELD;
s -= nsegs_of_delay;
if (s < 0)
s += 2 * ATSC_DSEGS_PER_FIELD;
assert (0 <= s && s < 2 * ATSC_DSEGS_PER_FIELD);
if (s < ATSC_DSEGS_PER_FIELD)
out.set_regular_seg (false, s); // field 1
else
out.set_regular_seg (true, s - ATSC_DSEGS_PER_FIELD); // field 2
}
void
plinfo::sanity_check (const plinfo &x)
{
// basic sanity checks...
assert (x.segno () >= 0);
assert (x.segno () < (unsigned) ATSC_DSEGS_PER_FIELD);
assert ((x.flags () & ~0x3f) == 0);
assert (x.regular_seg_p () ^ x.field_sync_p ());
assert ((x.segno () != 0) ^ x.first_regular_seg_p ());
}
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