GNU Radio 3.7.1 C++ API
stretch_ff.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2008,2013 Free Software Foundation, Inc.
00004  *
00005  * This file is part of GNU Radio
00006  *
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  *
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef INCLUDED_GR_STRETCH_FF_H
00024 #define INCLUDED_GR_STRETCH_FF_H
00025 
00026 #include <gnuradio/blocks/api.h>
00027 #include <gnuradio/sync_block.h>
00028 
00029 namespace gr {
00030   namespace blocks {
00031     
00032     /*!
00033      * \brief adjust y-range of an input vector by mapping to range
00034      * (max-of-input, stipulated-min). Primarily for spectral
00035      * signature matching by normalizing spectrum dynamic ranges.
00036      * \ingroup stream_operators_blk
00037      */
00038     class BLOCKS_API stretch_ff : virtual public sync_block
00039     {
00040     public:
00041       // gr::blocks::stretch_ff::sptr
00042       typedef boost::shared_ptr<stretch_ff> sptr;
00043       
00044       /*!
00045        * \brief Make a stretch block.
00046        *
00047        * \param lo Set low value for range.
00048        * \param vlen vector length of input stream.
00049        */
00050       static sptr make(float lo, size_t vlen=1);
00051 
00052       virtual float lo() const = 0;
00053       virtual void set_lo(float lo) = 0;
00054       virtual size_t vlen() const = 0;
00055     };
00056 
00057   } /* namespace blocks */
00058 } /* namespace gr */
00059 
00060 #endif /* INCLUDED_GR_STRETCH_FF_H */