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GrSink.h

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00001 /* -*- Mode: c++ -*- */ 00002 /* 00003 * Copyright 2001,2003 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 * Copyright 1997 Massachusetts Institute of Technology 00024 * 00025 * Permission to use, copy, modify, distribute, and sell this software and its 00026 * documentation for any purpose is hereby granted without fee, provided that 00027 * the above copyright notice appear in all copies and that both that 00028 * copyright notice and this permission notice appear in supporting 00029 * documentation, and that the name of M.I.T. not be used in advertising or 00030 * publicity pertaining to distribution of the software without specific, 00031 * written prior permission. M.I.T. makes no representations about the 00032 * suitability of this software for any purpose. It is provided "as is" 00033 * without express or implied warranty. 00034 * 00035 */ 00036 00037 /* 00038 * Look Ma! No templates! 00039 */ 00040 00041 #ifndef _GRSINK_H_ 00042 #define _GRSINK_H_ 00043 00044 #include <VrSigProc.h> 00045 #include <stddef.h> // size_t 00046 00047 class GrSink : public VrSigProc { 00048 private: 00049 unsigned int d_optimalSize; 00050 00051 public: 00052 GrSink (size_t sizeof_iType); 00053 00054 virtual const char *name() { return "GrSink"; } 00055 00056 // standard "work" routine. We have it call work3, which 00057 // doesn't pass unnecessary output pointers. 00058 00059 virtual int work(VrSampleRange output, void *o[], 00060 VrSampleRange inputs[], void *i[]) { 00061 return work3 (output, inputs, i); 00062 }; 00063 00064 virtual int work3(VrSampleRange output, 00065 VrSampleRange inputs[], void *i[]) = 0; 00066 00067 00068 // FIXME does anyone actually use this? 00069 // set this if you want the sink to use smaller chunks 00070 // than the maxLatency would dictate 00071 void setOptimalSize (unsigned int s); 00072 00073 // internal routines 00074 virtual void setup(); 00075 void setup_upstream(); 00076 }; 00077 00078 #endif // _GRSINK_H_ 00079

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