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/* -*- c++ -*- */
/*
* Copyright 2005 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_GR_SKIPHEAD_H
#define INCLUDED_GR_SKIPHEAD_H
#include <gr_core_api.h>
#include <gr_sync_block.h>
#include <stddef.h> // size_t
class gr_skiphead;
typedef boost::shared_ptr<gr_skiphead> gr_skiphead_sptr;
GR_CORE_API gr_skiphead_sptr
gr_make_skiphead (size_t itemsize, uint64_t nitems_to_skip);
/*!
* \brief skips the first N items, from then on copies items to the output
* \ingroup slicedice_blk
*
* Useful for building test cases and sources which have metadata or junk at the start
*/
class GR_CORE_API gr_skiphead : public gr_block
{
friend GR_CORE_API gr_skiphead_sptr gr_make_skiphead (size_t itemsize, uint64_t nitems_to_skip);
gr_skiphead (size_t itemsize, uint64_t nitems_to_skip);
uint64_t d_nitems_to_skip;
uint64_t d_nitems; // total items seen
public:
int general_work(int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
#endif /* INCLUDED_GR_SKIPHEAD_H */
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