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GrAtscFieldSyncDemux.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 _GRATSCFIELDSYNCDEMUX_H_
00024 #define _GRATSCFIELDSYNCDEMUX_H_
00025 
00026 #include <VrDecimatingSigProc.h>
00027 #include <atsc_types.h>
00028 
00036 class GrAtscFieldSyncDemux : public VrDecimatingSigProc<float,atsc_soft_data_segment> {
00037 
00038  public:
00039 
00040   GrAtscFieldSyncDemux ();
00041   virtual ~GrAtscFieldSyncDemux ();
00042 
00043   virtual const char *name () { return "GrAtscFieldSyncDemux"; }
00044 
00045   virtual int forecast (VrSampleRange output,
00046                         VrSampleRange inputs[]);
00047 
00048   virtual int work (VrSampleRange output, void *o[],
00049                     VrSampleRange inputs[], void *i[]);
00050 
00051  protected:
00052 
00053   bool            d_locked;
00054   bool            d_in_field2;
00055   int             d_segment_number;
00056   VrSampleIndex   d_next_input;
00057   VrSampleIndex   d_lost_index;         // diagnostic fluff
00058 };
00059 
00060 #endif // _GRATSCFIELDSYNCDEMUX_H_

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