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/* -*- c++ -*- */
/*
* Copyright 2006,2007,2011 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_MAPPER_BCV_H
#define INCLUDED_DIGITAL_OFDM_MAPPER_BCV_H
#include <gr_sync_block.h>
#include <gr_message.h>
#include <gr_msg_queue.h>
class digital_ofdm_mapper_bcv;
typedef boost::shared_ptr<digital_ofdm_mapper_bcv> digital_ofdm_mapper_bcv_sptr;
digital_ofdm_mapper_bcv_sptr
digital_make_ofdm_mapper_bcv (const std::vector<gr_complex> &constellation, unsigned msgq_limit,
unsigned occupied_carriers, unsigned int fft_length);
/*!
* \brief take a stream of bytes in and map to a vector of complex
* constellation points suitable for IFFT input to be used in an ofdm
* modulator. Abstract class must be subclassed with specific mapping.
* \ingroup modulation_blk
* \ingroup ofdm_blk
*/
class digital_ofdm_mapper_bcv : public gr_sync_block
{
friend digital_ofdm_mapper_bcv_sptr
digital_make_ofdm_mapper_bcv (const std::vector<gr_complex> &constellation, unsigned msgq_limit,
unsigned occupied_carriers, unsigned int fft_length);
protected:
digital_ofdm_mapper_bcv (const std::vector<gr_complex> &constellation, unsigned msgq_limit,
unsigned occupied_carriers, unsigned int fft_length);
private:
std::vector<gr_complex> d_constellation;
gr_msg_queue_sptr d_msgq;
gr_message_sptr d_msg;
unsigned d_msg_offset;
bool d_eof;
unsigned int d_occupied_carriers;
unsigned int d_fft_length;
unsigned int d_bit_offset;
int d_pending_flag;
unsigned long d_nbits;
unsigned char d_msgbytes;
unsigned char d_resid;
unsigned int d_nresid;
std::vector<int> d_subcarrier_map;
int randsym();
public:
~digital_ofdm_mapper_bcv(void);
gr_msg_queue_sptr msgq() const { return d_msgq; }
int work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
#endif
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