1 /* -*- c++ -*- */
2 /*
3  * Copyright 2012, 2018 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_BLOCKS_FILE_SOURCE_IMPL_H
24 #define INCLUDED_BLOCKS_FILE_SOURCE_IMPL_H
25 
26 #include <gnuradio/blocks/file_source.h>
27 #include <boost/thread/mutex.hpp>
28 
29 namespace gr {
30 namespace blocks {
31 
32 class BLOCKS_API file_source_impl : public file_source
33 {
34 private:
35     size_t d_itemsize;
36     uint64_t d_start_offset_items;
37     uint64_t d_length_items;
38     uint64_t d_items_remaining;
39     FILE* d_fp;
40     FILE* d_new_fp;
41     bool d_repeat;
42     bool d_updated;
43     bool d_file_begin;
44     bool d_seekable;
45     long d_repeat_cnt;
46     pmt::pmt_t d_add_begin_tag;
47 
48     boost::mutex fp_mutex;
49     pmt::pmt_t _id;
50 
51     void do_update();
52 
53 public:
54     file_source_impl(size_t itemsize,
55                      const char* filename,
56                      bool repeat,
57                      uint64_t offset,
58                      uint64_t len);
59     ~file_source_impl();
60 
61     bool seek(int64_t seek_point, int whence);
62     void open(const char* filename, bool repeat, uint64_t offset, uint64_t len);
63     void close();
64 
65     int work(int noutput_items,
66              gr_vector_const_void_star& input_items,
67              gr_vector_void_star& output_items);
68 
69     void set_begin_tag(pmt::pmt_t val);
70 };
71 
72 } /* namespace blocks */
73 } /* namespace gr */
74 
75 #endif /* INCLUDED_BLOCKS_FILE_SOURCE_IMPL_H */
76