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libavcodec/eval.h

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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 */

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