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/* -*- c++ -*- */
/*
* Copyright 2007,2011 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 3, 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_DIGITAL_OFDM_SAMPLER_H
#define INCLUDED_DIGITAL_OFDM_SAMPLER_H
#include <digital_api.h>
#include <gr_sync_block.h>
class digital_ofdm_sampler;
typedef boost::shared_ptr<digital_ofdm_sampler> digital_ofdm_sampler_sptr;
DIGITAL_API digital_ofdm_sampler_sptr digital_make_ofdm_sampler (unsigned int fft_length,
unsigned int symbol_length,
unsigned int timeout=1000);
/*!
* \brief does the rest of the OFDM stuff
* \ingroup ofdm_blk
*/
class DIGITAL_API digital_ofdm_sampler : public gr_block
{
friend DIGITAL_API digital_ofdm_sampler_sptr digital_make_ofdm_sampler (unsigned int fft_length,
unsigned int symbol_length,
unsigned int timeout);
digital_ofdm_sampler (unsigned int fft_length,
unsigned int symbol_length,
unsigned int timeout);
private:
enum state_t {STATE_NO_SIG, STATE_PREAMBLE, STATE_FRAME};
state_t d_state;
unsigned int d_timeout_max;
unsigned int d_timeout;
unsigned int d_fft_length;
unsigned int d_symbol_length;
public:
void forecast (int noutput_items, gr_vector_int &ninput_items_required);
int general_work (int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
#endif
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