00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 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 #ifndef INCLUDED_GR_RMS_FF_H 00023 #define INCLUDED_GR_RMS_FF_H 00024 00025 #include <gr_sync_block.h> 00026 #include <gr_single_pole_iir.h> 00027 00028 class gr_rms_ff; 00029 typedef boost::shared_ptr<gr_rms_ff> gr_rms_ff_sptr; 00030 00031 gr_rms_ff_sptr 00032 gr_make_rms_ff (double alpha = 0.0001); 00033 00037 class gr_rms_ff : public gr_sync_block 00038 { 00039 gr_single_pole_iir<double,double,double> d_iir; 00040 bool d_unmuted; 00041 00042 friend gr_rms_ff_sptr 00043 gr_make_rms_ff (double alpha); 00044 00045 gr_rms_ff (double alpha); 00046 00047 public: 00048 ~gr_rms_ff (); 00049 00050 int work (int noutput_items, 00051 gr_vector_const_void_star &input_items, 00052 gr_vector_void_star &output_items); 00053 00054 bool unmuted () const { return d_unmuted; } 00055 00056 void set_alpha (double alpha); 00057 }; 00058 00059 #endif /* INCLUDED_GR_RMS_FF_H */
1.4.1