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GrAtscBitTimingLoop3.h

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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 
00023 #ifndef _GRATSCBITTIMINGLOOP3_H_
00024 #define _GRATSCBITTIMINGLOOP3_H_
00025 
00026 #include <cstdio>
00027 #include <VrDecimatingSigProc.h>
00028 #include <atsc_diag_output.h>
00029 #include <atsc_sssr.h>
00030 #include <atsc_syminfo.h>
00031 
00039 class GrAtscBitTimingLoop3 : public VrDecimatingSigProc<float,float> {
00040 
00041  public:
00042 
00043   GrAtscBitTimingLoop3 (double ratio_of_rx_clock_to_symbol_freq);
00044   virtual ~GrAtscBitTimingLoop3 () { };
00045 
00046   virtual const char *name () { return "GrAtscBitTimingLoop3"; }
00047 
00048   virtual int forecast (VrSampleRange output,
00049                         VrSampleRange inputs[]);
00050 
00051   virtual int work (VrSampleRange output, void *o[],
00052                     VrSampleRange inputs[], void *i[]);
00053 
00054   // debug (NOPs)
00055   void set_mu (double a_mu) {  }
00056   void set_no_update (bool a_no_update) {  }
00057   void set_loop_filter_tap (double tap)  { }
00058   void set_timing_rate (double rate)     { }
00059 
00060  protected:
00061 
00062   typedef float         iType;
00063   typedef float         oDataType;
00064   typedef atsc::syminfo oTagType;
00065 
00066   atsc_sssr                     d_sssr;
00067   atsc_interpolator             d_interp;
00068   VrSampleIndex                 d_next_input;
00069   double                        d_rx_clock_to_symbol_freq;
00070 };
00071 
00072 #endif // _GRATSCBITTIMINGLOOP3_H_

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