GNU Radio 3.7.1 C++ API
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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 */