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/* -*- c++ -*- */
/*
* Copyright 2008,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_GR_STRETCH_FF_H
#define INCLUDED_GR_STRETCH_FF_H
#include <gnuradio/blocks/api.h>
#include <gnuradio/sync_block.h>
namespace gr {
namespace blocks {
/*!
* \brief adjust y-range of an input vector by mapping to range
* (max-of-input, stipulated-min). Primarily for spectral
* signature matching by normalizing spectrum dynamic ranges.
* \ingroup stream_operators_blk
*/
class BLOCKS_API stretch_ff : virtual public sync_block
{
public:
// gr::blocks::stretch_ff::sptr
typedef std::shared_ptr<stretch_ff> sptr;
/*!
* \brief Make a stretch block.
*
* \param lo Set low value for range.
* \param vlen vector length of input stream.
*/
static sptr make(float lo, size_t vlen = 1);
virtual float lo() const = 0;
virtual void set_lo(float lo) = 0;
virtual size_t vlen() const = 0;
};
} /* namespace blocks */
} /* namespace gr */
#endif /* INCLUDED_GR_STRETCH_FF_H */
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