GNU Radio 3.5.3.2 C++ API
gr_moving_average_ss.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2008 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 // WARNING: this file is machine generated.  Edits will be over written
00024 
00025 #ifndef INCLUDED_GR_MOVING_AVERAGE_SS_H
00026 #define INCLUDED_GR_MOVING_AVERAGE_SS_H
00027 
00028 #include <gr_core_api.h>
00029 #include <gr_sync_block.h>
00030 
00031 class gr_moving_average_ss;
00032 
00033 typedef boost::shared_ptr<gr_moving_average_ss> gr_moving_average_ss_sptr;
00034 
00035 GR_CORE_API gr_moving_average_ss_sptr gr_make_moving_average_ss (int length, short scale, int max_iter = 4096);
00036 
00037 /*!
00038  * \brief output is the moving sum of the last N samples, scaled by the scale factor
00039  * \ingroup filter_blk
00040  *
00041  * max_iter limits how long we go without flushing the accumulator
00042  * This is necessary to avoid numerical instability for float and complex.
00043  */
00044 class GR_CORE_API gr_moving_average_ss : public gr_sync_block
00045 {
00046 private:
00047   friend GR_CORE_API gr_moving_average_ss_sptr gr_make_moving_average_ss(int length, short scale, int max_iter);
00048 
00049   gr_moving_average_ss (int length, short scale, int max_iter = 4096);
00050 
00051   int d_length;
00052   short d_scale;
00053   int d_max_iter;
00054 
00055   int d_new_length;
00056   short d_new_scale;
00057   bool d_updated;
00058 
00059 public:
00060   ~gr_moving_average_ss ();     
00061 
00062   int work (int noutput_items,
00063             gr_vector_const_void_star &input_items,
00064             gr_vector_void_star &output_items);
00065 
00066   int length() const { return d_new_length; }
00067   short scale() const { return d_new_scale; }
00068 
00069   void set_length_and_scale(int length, short scale);
00070 };
00071 
00072 #endif /* INCLUDED_GR_MOVING_AVERAGE_SS_H */