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VrSource.h

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00001 /* -*- Mode: c++ -*- */ 00002 /* 00003 * Copyright 2001 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 #ifndef _VRSOURCE_H_ 00038 #define _VRSOURCE_H_ 00039 00040 #include <VrSigProc.h> 00041 00042 template<class oType> 00043 class VrSource : public VrSigProc { 00044 public: 00045 VrSource():VrSigProc(1, 0, sizeof(oType)) {}; 00046 VrSource(int outputs):VrSigProc(outputs, 0, sizeof(oType)) {}; 00047 virtual int forecast(VrSampleRange output, 00048 VrSampleRange *inputs) { 00049 fprintf(stderr, "VrSource: forecast should never be called.\n"); 00050 exit(-1); 00051 return -1; 00052 }; 00053 virtual const char *name() { return "VrSource"; } 00054 00055 virtual int work(VrSampleRange output, void *o[], 00056 VrSampleRange inputs[], void *i[]) { 00057 return work2(output, o); 00058 }; 00059 virtual int work2(VrSampleRange output, void *o[])=0; 00060 virtual bool isConnectedToSource() {return true;} 00061 }; 00062 #endif

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