forked from sdr/gr-osmosdr
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright 2004,2008,2013 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef INCLUDED_GR_RUNTIME_SYNC_INTERPOLATOR_H
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#define INCLUDED_GR_RUNTIME_SYNC_INTERPOLATOR_H
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#include <gnuradio/api.h>
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#include <gnuradio/sync_block.h>
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namespace gr {
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/*!
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* \brief synchronous 1:N input to output with history
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* \ingroup base_blk
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*
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* Override work to provide the signal processing implementation.
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*/
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class GR_RUNTIME_API sync_interpolator : public sync_block
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{
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private:
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unsigned d_interpolation;
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protected:
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sync_interpolator(void) {} // allows pure virtual interface sub-classes
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sync_interpolator(const std::string &name,
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gr::io_signature::sptr input_signature,
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gr::io_signature::sptr output_signature,
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unsigned interpolation);
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public:
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unsigned interpolation() const { return d_interpolation; }
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void set_interpolation(unsigned interpolation)
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{
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d_interpolation = interpolation;
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set_relative_rate(1.0 * interpolation);
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set_output_multiple(interpolation);
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}
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// gr::sync_interpolator overrides these to assist work
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void forecast(int noutput_items,
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gr_vector_int &ninput_items_required);
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int general_work(int noutput_items,
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gr_vector_int &ninput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items);
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// derived classes should override work
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int fixed_rate_ninput_to_noutput(int ninput);
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int fixed_rate_noutput_to_ninput(int noutput);
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};
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} /* namespace gr */
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#endif /* INCLUDED_GR_RUNTIME_SYNC_INTERPOLATOR_H */
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