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* Copyright 2004,2008 Free Software Foundation, Inc.
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* This file is part of GNU Radio
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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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* 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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* 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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#ifndef INCLUDED_GR_SYNC_INTERPOLATOR_H
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#define INCLUDED_GR_SYNC_INTERPOLATOR_H
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#include <gr_sync_block.h>
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* \brief synchronous 1:N input to output with history
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* Override work to provide the signal processing implementation.
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class gr_sync_interpolator : public gr_sync_block
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unsigned d_interpolation;
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gr_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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unsigned interpolation () const { return d_interpolation; }
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void set_interpolation (unsigned interpolation)
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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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// gr_sync_interpolator overrides these to assist work
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void forecast (int noutput_items, 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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#endif /* INCLUDED_GR_SYNC_INTERPOLATOR_H */