2 * Various utilities for command line tools
3 * copyright (c) 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
22 #ifndef FFMPEG_CMDUTILS_H
23 #define FFMPEG_CMDUTILS_H
26 #include "libavcodec/avcodec.h"
27 #include "libavformat/avformat.h"
28 #include "libswscale/swscale.h"
31 * program name, defined by the program for show_version().
33 extern const char program_name[];
36 * program birth year, defined by the program for show_banner()
38 extern const int program_birth_year;
40 extern const int this_year;
42 extern const char **opt_names;
43 extern AVCodecContext *avcodec_opts[CODEC_TYPE_NB];
44 extern AVFormatContext *avformat_opts;
45 extern struct SwsContext *sws_opts;
48 * Fallback for options that are not explicitly handled, these will be
49 * parsed through AVOptions.
51 int opt_default(const char *opt, const char *arg);
54 * Sets the libav* libraries log level.
56 int opt_loglevel(const char *opt, const char *arg);
59 * Limit the execution time.
61 int opt_timelimit(const char *opt, const char *arg);
64 * Parses a string and returns its corresponding value as a double.
65 * Exits from the application if the string cannot be correctly
66 * parsed or the corresponding value is invalid.
68 * @param context the context of the value to be set (e.g. the
69 * corresponding commandline option name)
70 * @param numstr the string to be parsed
71 * @param type the type (OPT_INT64 or OPT_FLOAT) as which the
72 * string should be parsed
73 * @param min the minimum valid accepted value
74 * @param max the maximum valid accepted value
76 double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max);
79 * Parses a string specifying a time and returns its corresponding
80 * value as a number of microseconds. Exits from the application if
81 * the string cannot be correctly parsed.
83 * @param context the context of the value to be set (e.g. the
84 * corresponding commandline option name)
85 * @param timestr the string to be parsed
86 * @param is_duration a flag which tells how to interpret timestr, if
87 * not zero timestr is interpreted as a duration, otherwise as a
92 int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration);
97 #define HAS_ARG 0x0001
98 #define OPT_BOOL 0x0002
99 #define OPT_EXPERT 0x0004
100 #define OPT_STRING 0x0008
101 #define OPT_VIDEO 0x0010
102 #define OPT_AUDIO 0x0020
103 #define OPT_GRAB 0x0040
104 #define OPT_INT 0x0080
105 #define OPT_FLOAT 0x0100
106 #define OPT_SUBTITLE 0x0200
107 #define OPT_FUNC2 0x0400
108 #define OPT_INT64 0x0800
109 #define OPT_EXIT 0x1000
111 void (*func_arg)(const char *); //FIXME passing error code as int return would be nicer then exit() in the func
115 int (*func2_arg)(const char *, const char *);
122 void show_help_options(const OptionDef *options, const char *msg, int mask, int value);
125 * Parses the command line arguments.
126 * @param options Array with the definitions required to interpret every
127 * option of the form: -<option_name> [<argument>]
128 * @param parse_arg_function Name of the function called to process every
129 * argument without a leading option name flag. NULL if such arguments do
130 * not have to be processed.
132 void parse_options(int argc, char **argv, const OptionDef *options,
133 void (* parse_arg_function)(const char*));
135 void set_context_opts(void *ctx, void *opts_ctx, int flags);
137 void print_error(const char *filename, int err);
139 void list_fmts(void (*get_fmt_string)(char *buf, int buf_size, int fmt), int nb_fmts);
142 * Prints the program banner to stderr. The banner contents depend on the
143 * current version of the repository and of the libav* libraries used by
146 void show_banner(void);
149 * Prints the version of the program to stdout. The version message
150 * depends on the current versions of the repository and of the libav*
153 void show_version(void);
156 * Prints the license of the program to stdout. The license depends on
157 * the license of the libraries compiled into the program.
159 void show_license(void);
162 * Prints a listing containing all the formats supported by the
165 void show_formats(void);
168 * Prints a listing containing all the codecs supported by the
171 void show_codecs(void);
174 * Prints a listing containing all the filters supported by the
177 void show_filters(void);
180 * Prints a listing containing all the bit stream filters supported by the
183 void show_bsfs(void);
186 * Prints a listing containing all the protocols supported by the
189 void show_protocols(void);
192 * Prints a listing containing all the pixel formats supported by the
195 void show_pix_fmts(void);
198 * Returns a positive value if reads from standard input a line
199 * starting with [yY], otherwise returns 0.
201 int read_yesno(void);
203 #endif /* FFMPEG_CMDUTILS_H */