GNU Radio 2.x: gr_single_pole_iir_filter_ff.h Source File

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# gr_single_pole_iir_filter_ff.h

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    00001 /* -*- c++ -*- */
    00002 /*
    00003  * Copyright 2004,2005 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 2, 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., 59 Temple Place - Suite 330,
    00020  * Boston, MA 02111-1307, USA.
    00021  */
    00022
    00023 #ifndef INCLUDED_GR_SINGLE_POLE_IIR_FILTER_FF_H
    00024 #define INCLUDED_GR_SINGLE_POLE_IIR_FILTER_FF_H
    00025
    00026 #include <gr_sync_block.h>
    00027 #include <gr_single_pole_iir.h>
    00028 #include <stdexcept>
    00029
    00030 class gr_single_pole_iir_filter_ff;
    00031 typedef boost::shared_ptr<gr_single_pole_iir_filter_ff> gr_single_pole_iir_filter_ff_sptr;
    00032
    00033 gr_single_pole_iir_filter_ff_sptr
    00034 gr_make_single_pole_iir_filter_ff (double alpha, unsigned int vlen=1);
    00035
    00055 class gr_single_pole_iir_filter_ff : public gr_sync_block
    00056 {
    00057  private:
    00058   friend gr_single_pole_iir_filter_ff_sptr
    00059   gr_make_single_pole_iir_filter_ff (double alpha, unsigned int vlen);
    00060
    00061   unsigned int                                          d_vlen;
    00062   std::vector<gr_single_pole_iir<float,float,double> >  d_iir;
    00063
    00064   gr_single_pole_iir_filter_ff (double alpha, unsigned int vlen);
    00065
    00066  public:
    00067   ~gr_single_pole_iir_filter_ff ();
    00068
    00069   void set_taps (double alpha);
    00070
    00071   int work (int noutput_items,
    00072             gr_vector_const_void_star &input_items,
    00073             gr_vector_void_star &output_items);
    00074 };
    00075
    00076 #endif