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/* -*- c++ -*- */
/*
* Copyright 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.
*/
#ifndef INCLUDED_ATSC_FIELD_SYNC_MUX_H
#define INCLUDED_ATSC_FIELD_SYNC_MUX_H
#include <gr_sync_block.h>
#include <atsc_types.h>
class atsc_field_sync_mux;
typedef boost::shared_ptr<atsc_field_sync_mux> atsc_field_sync_mux_sptr;
atsc_field_sync_mux_sptr atsc_make_field_sync_mux();
/*!
* \brief Insert ATSC Field Syncs as required (atsc_data_segment --> atsc_data_segment)
* \ingroup atsc
*
* input: atsc_data_segment; output: atsc_data_segment
*/
class atsc_field_sync_mux : public gr_sync_block
{
friend atsc_field_sync_mux_sptr atsc_make_field_sync_mux();
atsc_field_sync_mux();
public:
void forecast (int noutput_items, gr_vector_int &ninput_items_required);
int work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
static const int N_SAVED_SYMBOLS = 12;
void reset() { /* nop */ }
protected:
gr_uint64 d_current_index;
bool d_already_output_field_sync;
unsigned char d_saved_symbols[N_SAVED_SYMBOLS];
};
#endif /* INCLUDED_ATSC_FIELD_SYNC_MUX_H */
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