GNU Radio 3.6.5.1 C++ API
file_descriptor_source_impl.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2004,2013 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,
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21  */
22 
23 #ifndef INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_IMPL_H
24 #define INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_IMPL_H
25 
27 
28 namespace gr {
29  namespace blocks {
30 
32  {
33  private:
34  size_t d_itemsize;
35  int d_fd;
36  bool d_repeat;
37 
38  unsigned char *d_residue;
39  unsigned long d_residue_len;
40 
41  protected:
42  int read_items(char *buf, int nitems);
43  int handle_residue(char *buf, int nbytes_read);
44  void flush_residue() { d_residue_len = 0; }
45 
46  public:
47  file_descriptor_source_impl(size_t itemsize, int fd, bool repeat);
49 
50  int work(int noutput_items,
51  gr_vector_const_void_star &input_items,
52  gr_vector_void_star &output_items);
53  };
54 
55  } /* namespace blocks */
56 } /* namespace gr */
57 
58 #endif /* INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_IMPL_H */