libavcodec/eval.h

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/*
 * simple arithmetic expression evaluator
 *
 * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
 *
 * 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
 */

#ifndef AVCODEC_EVAL_H
#define AVCODEC_EVAL_H

double ff_eval2(const char *s, const double *const_value, const char * const *const_name,
               double (**func1)(void *, double), const char **func1_name,
               double (**func2)(void *, double, double), const char **func2_name,
               void *opaque, const char **error);

typedef struct ff_expr_s AVEvalExpr;

AVEvalExpr * ff_parse(const char *s, const char * const *const_name,
               double (**func1)(void *, double), const char **func1_name,
               double (**func2)(void *, double, double), const char **func2_name,
               const char **error);
double ff_parse_eval(AVEvalExpr * e, const double *const_value, void *opaque);
void ff_eval_free(AVEvalExpr * e);

#endif /* AVCODEC_EVAL_H */

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