00001 /* Copyright (C) 2004 Guido Simone 00002 * 00003 * This program is free software; you can redistribute it and/or modify 00004 * it under the terms of the GNU General Public License as published by 00005 * the Free Software Foundation; either version 2 of the License, or 00006 * (at your option) any later version. 00007 * 00008 * This program is distributed in the hope that it will be useful, 00009 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00010 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00011 * GNU General Public License for more details. 00012 00013 * You should have received a copy of the GNU General Public License 00014 * along with this program; if not, write to the Free Software 00015 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00016 */ 00017 00018 #ifndef GXLIB_GXAUDIOFILTERVISITOR_H 00019 #define GXLIB_GXAUDIOFILTERVISITOR_H 00020 00021 #include "../gx.h" 00022 00023 class gxAudioFilter; 00024 class gxAudioPin; 00025 00026 class gxAudioFilterVisitor 00027 { 00028 public: 00029 gxAudioFilterVisitor() { }; 00030 virtual ~gxAudioFilterVisitor() { }; 00031 00032 virtual bool visit( gxAudioFilter * filter ) = 0; 00033 00034 // optional method to implement if you want to visit each pin 00035 virtual bool visitPin( gxAudioFilter * filter, gxAudioPin * pin ) { return true; } 00036 00037 private: 00038 gxAudioFilterVisitor( const gxAudioFilterVisitor & rhs); 00039 gxAudioFilterVisitor & operator=( const gxAudioFilterVisitor & rhs); 00040 }; 00041 #endif