00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2004 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_KEEP_ONE_IN_N_H 00024 #define INCLUDED_GR_KEEP_ONE_IN_N_H 00025 00026 #include <gr_sync_decimator.h> 00027 00028 class gr_keep_one_in_n; 00029 typedef boost::shared_ptr<gr_keep_one_in_n> gr_keep_one_in_n_sptr; 00030 00031 gr_keep_one_in_n_sptr 00032 gr_make_keep_one_in_n (size_t item_size, int n); 00033 00034 00039 class gr_keep_one_in_n : public gr_block 00040 { 00041 friend gr_keep_one_in_n_sptr 00042 gr_make_keep_one_in_n (size_t item_size, int n); 00043 00044 int d_n; 00045 int d_count; 00046 00047 protected: 00048 gr_keep_one_in_n (size_t item_size, int n); 00049 00050 public: 00051 int general_work (int noutput_items, 00052 gr_vector_int &ninput_items, 00053 gr_vector_const_void_star &input_items, 00054 gr_vector_void_star &output_items); 00055 00056 void set_n(int n); 00057 00058 }; 00059 00060 #endif /* INCLUDED_GR_KEEP_ONE_IN_N_H */
1.4.1