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