FFmpeg: libavutil/eval.h Source File

00001 /*
00002  * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
00003  *
00004  * This file is part of FFmpeg.
00005  *
00006  * FFmpeg is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * FFmpeg is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with FFmpeg; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00026 #ifndef AVUTIL_EVAL_H
00027 #define AVUTIL_EVAL_H
00028 
00029 #include "avutil.h"
00030 
00031 typedef struct AVExpr AVExpr;
00032 
00051 int av_expr_parse_and_eval(double *res, const char *s,
00052                            const char * const *const_names, const double *const_values,
00053                            const char * const *func1_names, double (* const *funcs1)(void *, double),
00054                            const char * const *func2_names, double (* const *funcs2)(void *, double, double),
00055                            void *opaque, int log_offset, void *log_ctx);
00056 
00074 int av_expr_parse(AVExpr **expr, const char *s,
00075                   const char * const *const_names,
00076                   const char * const *func1_names, double (* const *funcs1)(void *, double),
00077                   const char * const *func2_names, double (* const *funcs2)(void *, double, double),
00078                   int log_offset, void *log_ctx);
00079 
00087 double av_expr_eval(AVExpr *e, const double *const_values, void *opaque);
00088 
00092 void av_expr_free(AVExpr *e);
00093 
00094 #if FF_API_OLD_EVAL_NAMES
00095 
00098 attribute_deprecated
00099 int av_parse_and_eval_expr(double *res, const char *s,
00100                            const char * const *const_names, const double *const_values,
00101                            const char * const *func1_names, double (* const *funcs1)(void *, double),
00102                            const char * const *func2_names, double (* const *funcs2)(void *, double, double),
00103                            void *opaque, int log_offset, void *log_ctx);
00104 
00108 attribute_deprecated
00109 int av_parse_expr(AVExpr **expr, const char *s,
00110                   const char * const *const_names,
00111                   const char * const *func1_names, double (* const *funcs1)(void *, double),
00112                   const char * const *func2_names, double (* const *funcs2)(void *, double, double),
00113                   int log_offset, void *log_ctx);
00117 attribute_deprecated
00118 double av_eval_expr(AVExpr *e, const double *const_values, void *opaque);
00119 
00123 attribute_deprecated
00124 void av_free_expr(AVExpr *e);
00125 #endif /* FF_API_OLD_EVAL_NAMES */
00126 
00144 double av_strtod(const char *numstr, char **tail);
00145 
00146 #endif /* AVUTIL_EVAL_H */