/* * filter registration * copyright (c) 2008 Vitor Sessak * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */#include "avfilter.h"#define REGISTER_FILTER(X,x,y) { \          extern AVFilter avfilter_##y##_##x ; \          if(ENABLE_##X##_FILTER )  avfilter_register(&avfilter_##y##_##x ); }void avfilter_register_all(void){    static int initialized;    if (initialized)        return;    initialized = 1;//    REGISTER_FILTER (CROP,crop,vf);}