Separate the process of creating links between filters from that of configuring
[libav.git] / cmdutils.h
1 /*
2 * Various utilities for command line tools
3 * copyright (c) 2003 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #ifndef FFMPEG_CMDUTILS_H
23 #define FFMPEG_CMDUTILS_H
24
25 #include <inttypes.h>
26
27 typedef struct {
28 const char *name;
29 int flags;
30 #define HAS_ARG 0x0001
31 #define OPT_BOOL 0x0002
32 #define OPT_EXPERT 0x0004
33 #define OPT_STRING 0x0008
34 #define OPT_VIDEO 0x0010
35 #define OPT_AUDIO 0x0020
36 #define OPT_GRAB 0x0040
37 #define OPT_INT 0x0080
38 #define OPT_FLOAT 0x0100
39 #define OPT_SUBTITLE 0x0200
40 #define OPT_FUNC2 0x0400
41 #define OPT_INT64 0x0800
42 union {
43 void (*func_arg)(const char *); //FIXME passing error code as int return would be nicer then exit() in the func
44 int *int_arg;
45 char **str_arg;
46 float *float_arg;
47 int (*func2_arg)(const char *, const char *);
48 int64_t *int64_arg;
49 } u;
50 const char *help;
51 const char *argname;
52 } OptionDef;
53
54 void show_help_options(const OptionDef *options, const char *msg, int mask, int value);
55
56 /**
57 * Parses the command line arguments.
58 * @param options Array with the definitions required to interpret every
59 * option of the form: -<option_name> [<argument>]
60 * @param parse_arg_function Name of the function called to process every
61 * argument without a leading option name flag. NULL if such arguments do
62 * not have to be processed.
63 */
64 void parse_options(int argc, char **argv, const OptionDef *options,
65 void (* parse_arg_function)(const char*));
66
67 void print_error(const char *filename, int err);
68
69 /**
70 * Prints the banner of the program on stderr. The banner message
71 * depends on the current versions of the repository and of the libav*
72 * libraries.
73 * @param program_name Name of the program.
74 * @param program_birth_year Year of birth of the program.
75 */
76 void show_banner(const char *program_name, int program_birth_year);
77
78 /**
79 * Prints the version of the program on stdout. The version message
80 * depends on the current versions of the repository and of the libav*
81 * libraries.
82 * @param program_name Name of the program.
83 */
84 void show_version(const char *program_name);
85
86 /**
87 * Prints on stdout the license of the program, which depends on the license of
88 * the compiled libav* libraries.
89 */
90 void show_license(void);
91
92 #endif /* FFMPEG_CMDUTILS_H */