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, 20 * Boston, MA 02110-1301, USA. 21 */ 22 23 #ifndef INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_IMPL_H 24 #define INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_IMPL_H 25 26 #include <gnuradio/blocks/file_descriptor_source.h> 27 28 namespace gr { 29 namespace blocks { 30 31 class file_descriptor_source_impl : public file_descriptor_source 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); flush_residue()44 void flush_residue() { d_residue_len = 0; } 45 46 public: 47 file_descriptor_source_impl(size_t itemsize, int fd, bool repeat); 48 ~file_descriptor_source_impl(); 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 */ 59