GNU Radio 3.6.5 C++ API

skiphead.h

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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2005,2013 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 3, 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., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef INCLUDED_GR_SKIPHEAD_H
00024 #define INCLUDED_GR_SKIPHEAD_H
00025 
00026 #include <blocks/api.h>
00027 #include <gr_sync_block.h>
00028 #include <stddef.h>      // size_t
00029 
00030 namespace gr {
00031   namespace blocks {
00032 
00033     /*!
00034      * \brief skips the first N items, from then on copies items to the output
00035      * \ingroup misc_blk
00036      *
00037      * \details
00038      * Useful for building test cases and sources which have metadata
00039      * or junk at the start
00040      */
00041     class BLOCKS_API skiphead : virtual public gr_block
00042     {
00043     public:
00044       // gr::blocks::skiphead::sptr
00045       typedef boost::shared_ptr<skiphead> sptr;
00046 
00047       static sptr make(size_t itemsize,
00048                        uint64_t nitems_to_skip);
00049     };
00050 
00051   } /* namespace blocks */
00052 } /* namespace gr */
00053 
00054 #endif /* INCLUDED_GR_SKIPHEAD_H */