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_THROTTLE_H 00023 #define INCLUDED_GR_THROTTLE_H 00024 00025 #include <gr_sync_block.h> 00026 #ifdef HAVE_SYS_TIME_H 00027 #include <sys/time.h> 00028 #endif 00029 00030 class gr_throttle; 00031 typedef boost::shared_ptr<gr_throttle> gr_throttle_sptr; 00032 00033 00034 gr_throttle_sptr gr_make_throttle(size_t itemsize, double samples_per_sec); 00035 00042 class gr_throttle : public gr_sync_block 00043 { 00044 friend gr_throttle_sptr gr_make_throttle(size_t itemsize, double samples_per_sec); 00045 size_t d_itemsize; 00046 double d_samples_per_sec; 00047 double d_total_samples; 00048 #ifdef HAVE_SYS_TIME_H 00049 struct timeval d_start; 00050 #endif 00051 00052 gr_throttle(size_t itemsize, double samples_per_sec); 00053 00054 public: 00055 ~gr_throttle(); 00056 00057 int work (int noutput_items, 00058 gr_vector_const_void_star &input_items, 00059 gr_vector_void_star &output_items); 00060 }; 00061 00062 00063 #endif /* INCLUDED_GR_THROTTLE_H */
1.4.1