GNU Radio 3.5.1 C++ API
digital_ofdm_cyclic_prefixer.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2004-2006,2011 Free Software Foundation, Inc.
00004  * 
00005  * This file is part of GNU Radio
00006  * 
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  * 
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef INCLUDED_DIGITAL_OFDM_CYCLIC_PREFIXER_H
00024 #define INCLUDED_DIGITAL_OFDM_CYCLIC_PREFIXER_H
00025 
00026 #include <digital_api.h>
00027 #include <gr_sync_interpolator.h>
00028 #include <stdio.h>
00029 
00030 class digital_ofdm_cyclic_prefixer;
00031 typedef boost::shared_ptr<digital_ofdm_cyclic_prefixer> digital_ofdm_cyclic_prefixer_sptr;
00032 
00033 DIGITAL_API digital_ofdm_cyclic_prefixer_sptr 
00034 digital_make_ofdm_cyclic_prefixer (size_t input_size, size_t output_size);
00035 
00036 
00037 /*!
00038  * \brief adds a cyclic prefix vector to an input size long ofdm
00039  * symbol(vector) and converts vector to a stream output_size long.
00040  * \ingroup ofdm_blk
00041  */
00042 class DIGITAL_API digital_ofdm_cyclic_prefixer : public gr_sync_interpolator
00043 {
00044   friend DIGITAL_API digital_ofdm_cyclic_prefixer_sptr
00045     digital_make_ofdm_cyclic_prefixer (size_t input_size, size_t output_size);
00046 
00047  protected:
00048   digital_ofdm_cyclic_prefixer (size_t input_size, size_t output_size);
00049 
00050  public:
00051   int work (int noutput_items,
00052             gr_vector_const_void_star &input_items,
00053             gr_vector_void_star &output_items);
00054  private:
00055   size_t d_input_size;
00056   size_t d_output_size;
00057 };
00058 
00059 #endif /* INCLUDED_DIGITAL_OFDM_CYCLIC_PREFIXER_H */