GNU Radio 2.x: gr_throttle.h Source File

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# gr_throttle.h

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    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 */