GNU Radio 3.5.3.2 C++ API
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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_FF_H 00026 #define INCLUDED_GR_MOVING_AVERAGE_FF_H 00027 00028 #include <gr_core_api.h> 00029 #include <gr_sync_block.h> 00030 00031 class gr_moving_average_ff; 00032 00033 typedef boost::shared_ptr<gr_moving_average_ff> gr_moving_average_ff_sptr; 00034 00035 GR_CORE_API gr_moving_average_ff_sptr gr_make_moving_average_ff (int length, float 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_ff : public gr_sync_block 00045 { 00046 private: 00047 friend GR_CORE_API gr_moving_average_ff_sptr gr_make_moving_average_ff(int length, float scale, int max_iter); 00048 00049 gr_moving_average_ff (int length, float scale, int max_iter = 4096); 00050 00051 int d_length; 00052 float d_scale; 00053 int d_max_iter; 00054 00055 int d_new_length; 00056 float d_new_scale; 00057 bool d_updated; 00058 00059 public: 00060 ~gr_moving_average_ff (); 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 float scale() const { return d_new_scale; } 00068 00069 void set_length_and_scale(int length, float scale); 00070 }; 00071 00072 #endif /* INCLUDED_GR_MOVING_AVERAGE_FF_H */