GNU Radio 3.5.3.2 C++ API
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00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2007 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_DPLL_BB_H 00024 #define INCLUDED_GR_DPLL_BB_H 00025 00026 #include <gr_core_api.h> 00027 #include <gr_sync_block.h> 00028 00029 class gr_dpll_bb; 00030 typedef boost::shared_ptr<gr_dpll_bb> gr_dpll_bb_sptr; 00031 00032 GR_CORE_API gr_dpll_bb_sptr gr_make_dpll_bb (float period, float gain); 00033 00034 /*! 00035 * \brief Detect the peak of a signal 00036 * \ingroup level_blk 00037 * 00038 * If a peak is detected, this block outputs a 1, 00039 * or it outputs 0's. 00040 */ 00041 class GR_CORE_API gr_dpll_bb : public gr_sync_block 00042 { 00043 friend GR_CORE_API gr_dpll_bb_sptr gr_make_dpll_bb (float period, float gain); 00044 00045 gr_dpll_bb (float period, float gain); 00046 00047 private: 00048 unsigned char d_restart; 00049 float d_pulse_phase, d_pulse_frequency,d_gain,d_decision_threshold; 00050 00051 public: 00052 00053 int work (int noutput_items, 00054 gr_vector_const_void_star &input_items, 00055 gr_vector_void_star &output_items); 00056 }; 00057 00058 #endif