/* * Various utilities for command line tools * copyright (c) 2003 Fabrice Bellard * * 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 CMD_UTILS_H #define CMD_UTILS_H typedef struct { const char *name; int flags; #define HAS_ARG 0x0001 #define OPT_BOOL 0x0002 #define OPT_EXPERT 0x0004 #define OPT_STRING 0x0008 #define OPT_VIDEO 0x0010 #define OPT_AUDIO 0x0020 #define OPT_GRAB 0x0040 #define OPT_INT 0x0080 #define OPT_FLOAT 0x0100 #define OPT_SUBTITLE 0x0200 #define OPT_FUNC2 0x0400 #define OPT_INT64 0x0800 union { void (*func_arg)(const char *); //FIXME passing error code as int return would be nicer then exit() in the func int *int_arg; char **str_arg; float *float_arg; int (*func2_arg)(const char *, const char *); int64_t *int64_arg; } u; const char *help; const char *argname; } OptionDef; void show_help_options(const OptionDef *options, const char *msg, int mask, int value); /** * Parses the command line arguments. * @param options Array with the definitions required to interpret every * option of the form: -<option_name> [<argument>] * @param parse_arg_function Name of the function called to process every * argument without a leading option name flag. NULL if such arguments do * not have to be processed. */ void parse_options(int argc, char **argv, const OptionDef *options, void (* parse_arg_function)(const char*)); void print_error(const char *filename, int err); /** * Prints on stdout the license of the program, which depends on the license of * the compiled libav* libraries. */ void show_license(void); #endif /* CMD_UTILS_H */