00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2002 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 2, 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., 59 Temple Place - Suite 330, 00020 * Boston, MA 02111-1307, USA. 00021 */ 00022 #ifndef _GRATSCSEGSYMSYNCIMPL_H_ 00023 #define _GRATSCSEGSYMSYNCIMPL_H_ 00024 00025 #include <GrAtscSegSymSync.h> 00026 #include <atsc_sssr.h> 00027 00028 00038 class GrAtscSegSymSyncImpl : public GrAtscSegSymSync { 00039 00040 atsc_sssr d_sssr; 00041 atsc_interpolator d_interp; 00042 VrSampleIndex d_next_input; 00043 double d_rx_clock_to_symbol_freq; // nominal ratio 00044 00045 public: 00046 00047 // the standard methods... 00048 00049 GrAtscSegSymSyncImpl (double nominal_ratio_of_rx_clock_to_symbol_freq); 00050 virtual ~GrAtscSegSymSyncImpl (); 00051 00052 virtual const char *name () { return "GrAtscSegSymSyncImpl"; } 00053 00054 virtual int forecast (VrSampleRange output, 00055 VrSampleRange inputs[]); 00056 00057 virtual int work (VrSampleRange output, void *o[], 00058 VrSampleRange inputs[], void *i[]); 00059 00060 void pre_initialize (); 00061 00062 00063 // reset on channel change 00064 00065 virtual void reset (); 00066 00067 }; 00068 00069 #endif /* _GRATSCSEGSYMSYNCIMPL_H_ */