00001 /* 00002 * simple arithmetic expression evaluator 00003 * 00004 * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at> 00005 * 00006 * This file is part of FFmpeg. 00007 * 00008 * FFmpeg is free software; you can redistribute it and/or 00009 * modify it under the terms of the GNU Lesser General Public 00010 * License as published by the Free Software Foundation; either 00011 * version 2.1 of the License, or (at your option) any later version. 00012 * 00013 * FFmpeg is distributed in the hope that it will be useful, 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 * Lesser General Public License for more details. 00017 * 00018 * You should have received a copy of the GNU Lesser General Public 00019 * License along with FFmpeg; if not, write to the Free Software 00020 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00021 */ 00022 00028 #ifndef AVCODEC_EVAL_H 00029 #define AVCODEC_EVAL_H 00030 00045 double ff_eval2(const char *s, const double *const_value, const char * const *const_name, 00046 double (**func1)(void *, double), const char **func1_name, 00047 double (**func2)(void *, double, double), const char **func2_name, 00048 void *opaque, const char **error); 00049 00050 typedef struct ff_expr_s AVEvalExpr; 00051 00064 AVEvalExpr * ff_parse(const char *s, const char * const *const_name, 00065 double (**func1)(void *, double), const char **func1_name, 00066 double (**func2)(void *, double, double), const char **func2_name, 00067 const char **error); 00074 double ff_parse_eval(AVEvalExpr * e, const double *const_value, void *opaque); 00075 void ff_eval_free(AVEvalExpr * e); 00076 00077 #endif /* AVCODEC_EVAL_H */