1 /* -*- c++ -*- */ 2 /* 3 * Copyright 2004,2009,2012,2013 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_HEAD_IMPL_H 24 #define INCLUDED_GR_HEAD_IMPL_H 25 26 #include <gnuradio/blocks/head.h> 27 28 namespace gr { 29 namespace blocks { 30 31 class head_impl : public head 32 { 33 private: 34 uint64_t d_nitems; 35 uint64_t d_ncopied_items; 36 37 public: 38 head_impl(size_t sizeof_stream_item, uint64_t nitems); 39 ~head_impl(); 40 reset()41 void reset() { d_ncopied_items = 0; } set_length(uint64_t nitems)42 void set_length(uint64_t nitems) { d_nitems = nitems; } 43 44 int work(int noutput_items, 45 gr_vector_const_void_star& input_items, 46 gr_vector_void_star& output_items); 47 }; 48 49 } /* namespace blocks */ 50 } /* namespace gr */ 51 52 #endif /* INCLUDED_GR_HEAD_IMPL_H */ 53