equalizer_nop_impl.h

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/* -*- c++ -*- */
/*
 * Copyright 2002 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 _ATSC_EQUALIZER_NOP_H_
#define _ATSC_EQUALIZER_NOP_H_

#include <gnuradio/atsc/api.h>
#include <gnuradio/atsc/equalizer_impl.h>

class ATSC_API atsci_equalizer_nop : public atsci_equalizer
{
private:
    float scale(float input) { return input; }

    float scale_and_train(float input);


public:
    atsci_equalizer_nop();
    virtual ~atsci_equalizer_nop();

    virtual void reset();
    virtual int ntaps() const;
    virtual int npretaps() const;

protected:
    virtual void
    filter_normal(const float* input_samples, float* output_samples, int nsamples);

    virtual void filter_data_seg_sync(const float* input_samples,
                                      float* output_samples,
                                      int nsamples,
                                      int offset);

    virtual void filter_field_sync(const float* input_samples,
                                   float* output_samples,
                                   int nsamples,
                                   int offset,
                                   int which_field);
};


#endif /* _ATSC_EQUALIZER_NOP_H_ */