GNU Radio 3.4.0 C++ API
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00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2008 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 <gr_sync_block.h> 00027 00028 /*! 00029 * \brief adjust y-range of an input vector by mapping to range 00030 * (max-of-input, stipulated-min). Primarily for spectral signature 00031 * matching by normalizing spectrum dynamic ranges. 00032 * \ingroup misc_blk 00033 */ 00034 00035 00036 class gr_stretch_ff; 00037 typedef boost::shared_ptr<gr_stretch_ff> gr_stretch_ff_sptr; 00038 00039 gr_stretch_ff_sptr gr_make_stretch_ff(float lo, size_t vlen); 00040 00041 class gr_stretch_ff : public gr_sync_block 00042 { 00043 friend gr_stretch_ff_sptr gr_make_stretch_ff(float lo, size_t vlen); 00044 00045 float d_lo; // the constant 00046 size_t d_vlen; 00047 gr_stretch_ff(float lo, size_t vlen); 00048 00049 public: 00050 float lo() const { return d_lo; } 00051 void set_lo(float lo) { d_lo = lo; } 00052 size_t vlen() const { return d_vlen; } 00053 00054 int work(int noutput_items, 00055 gr_vector_const_void_star &input_items, 00056 gr_vector_void_star &output_items); 00057 }; 00058 00059 #endif