1 /* -*- c++ -*- */
2 /*
3  * Copyright 2007,2012-2013 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
6  *
7  * GNU Radio is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 3, or (at your option)
10  * any later version.
11  *
12  * GNU Radio is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with GNU Radio; see the file COPYING.  If not, write to
19  * the Free Software Foundation, Inc., 51 Franklin Street,
20  * Boston, MA 02110-1301, USA.
21  */
22 
23 #ifndef INCLUDED_GR_DELAY_IMPL_H
24 #define INCLUDED_GR_DELAY_IMPL_H
25 
26 #include <gnuradio/blocks/delay.h>
27 #include <gnuradio/thread/thread.h>
28 
29 namespace gr {
30 namespace blocks {
31 
32 class delay_impl : public delay
33 {
34 private:
35     void forecast(int noutput_items, gr_vector_int& ninput_items_required);
36 
37     size_t d_itemsize;
38     int d_delta;
39     gr::thread::mutex d_mutex_delay;
40 
41 public:
42     delay_impl(size_t itemsize, int delay);
43     ~delay_impl();
44 
dly()45     int dly() const { return history() - 1; }
46     void set_dly(int d);
47 
48     int general_work(int noutput_items,
49                      gr_vector_int& ninput_items,
50                      gr_vector_const_void_star& input_items,
51                      gr_vector_void_star& output_items);
52 };
53 
54 } /* namespace blocks */
55 } /* namespace gr */
56 
57 #endif /* INCLUDED_GR_DELAY_IMPL_H */
58