00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2004 Free Software Foundation, Inc. 00004 * 00005 * This file is part of GNU Radio 00006 * 00007 * GNU Radio is free software; you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation; either version 2, or (at your option) 00010 * any later version. 00011 * 00012 * GNU Radio is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with GNU Radio; see the file COPYING. If not, write to 00019 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 00020 * Boston, MA 02111-1307, USA. 00021 */ 00022 00023 #ifndef INCLUDED_GR_NULL_SOURCE_H 00024 #define INCLUDED_GR_NULL_SOURCE_H 00025 00026 #include <gr_sync_block.h> 00027 00033 class gr_null_source : public gr_sync_block 00034 { 00035 friend gr_block_sptr gr_make_null_source (size_t sizeof_stream_item); 00036 00037 gr_null_source (size_t sizeof_stream_item); 00038 00039 public: 00040 virtual int work (int noutput_items, 00041 gr_vector_const_void_star &input_items, 00042 gr_vector_void_star &output_items); 00043 00044 }; 00045 00046 gr_block_sptr 00047 gr_make_null_source (size_t sizeof_stream_item); 00048 00049 #endif /* INCLUDED_GR_NULL_SOURCE_H */
1.4.1