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GrAtscConvert2xTo20.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 #ifndef _GRATSCCONVERT2XTO20_H_
00023 #define _GRATSCCONVERT2XTO20_H_
00024 
00025 #include <VrDecimatingSigProc.h>
00026 #include <gr_mmse_fir_interpolator.h>
00027 
00028 class GrAtscConvert2xTo20 : public VrDecimatingSigProc<float,float> {
00029   gr_mmse_fir_interpolator      d_interp;
00030   double                        d_frac_part;
00031   VrSampleIndex                 d_next_input;
00032   
00033 public:
00034   GrAtscConvert2xTo20 ();
00035   ~GrAtscConvert2xTo20 ();
00036 
00037   virtual const char *name () { return "GrAtscConvert2xTo20"; }
00038 
00039   virtual int forecast (VrSampleRange output,
00040                         VrSampleRange inputs[]);
00041 
00042   virtual int work (VrSampleRange output, void *o[],
00043                     VrSampleRange inputs[], void *i[]);
00044 
00045   void pre_initialize ();
00046   int checkOutputSamplingFrequency(float) { return 0; } // bogus, but required
00047 
00048 };
00049 
00050 #endif /* _GRATSCCONVERT2XTO20_H_ */

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