GNU Radio 3.5.3.2 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_FMDET_CF_H 00024 #define INCLUDED_GR_FMDET_CF_H 00025 00026 #include <gr_core_api.h> 00027 #include <gr_sync_block.h> 00028 00029 class gr_fmdet_cf; 00030 typedef boost::shared_ptr<gr_fmdet_cf> gr_fmdet_cf_sptr; 00031 00032 GR_CORE_API gr_fmdet_cf_sptr gr_make_fmdet_cf (float samplerate, float freq_low, float freq_high, float scl); 00033 00034 class gr_fir_ccf; 00035 00036 00037 /*! 00038 * \brief Implements an IQ slope detector 00039 * 00040 * 00041 * input: stream of complex; output: stream of floats 00042 * 00043 * This implements a limiting slope detector. The limiter is in the 00044 * normalization by the magnitude of the sample 00045 */ 00046 00047 class GR_CORE_API gr_fmdet_cf : public gr_sync_block 00048 { 00049 friend GR_CORE_API gr_fmdet_cf_sptr gr_make_fmdet_cf (float samplerate, float freq_low, 00050 float freq_high, float scl); 00051 00052 gr_complex d_S1,d_S2,d_S3,d_S4; 00053 float d_freq,d_freqlo,d_freqhi,d_scl,d_bias; 00054 gr_fir_ccf* d_filter; 00055 gr_fmdet_cf (float samplerate, float freq_low, float freq_high, float scl); 00056 00057 int work (int noutput_items, 00058 gr_vector_const_void_star &input_items, 00059 gr_vector_void_star &output_items); 00060 00061 }; 00062 00063 #endif