Add spectral extension to the E-AC-3 decoder.
[libav.git] / cmdutils.h
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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
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22#ifndef FFMPEG_CMDUTILS_H
23#define FFMPEG_CMDUTILS_H
01310af2 24
f0a838e5 25#include <inttypes.h>
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26#include "libavcodec/avcodec.h"
27#include "libavformat/avformat.h"
28#include "libswscale/swscale.h"
f0a838e5 29
60b5a745 30/**
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31 * program name, defined by the program for show_version().
32 */
33extern const char program_name[];
34
35/**
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36 * program birth year, defined by the program for show_banner()
37 */
38extern const int program_birth_year;
39
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40extern const int this_year;
41
85663ef3 42extern const char **opt_names;
636f1c4c 43extern AVCodecContext *avcodec_opts[CODEC_TYPE_NB];
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44extern AVFormatContext *avformat_opts;
45extern struct SwsContext *sws_opts;
46
47/**
b7438896 48 * Fallback for options that are not explicitly handled, these will be
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49 * parsed through AVOptions.
50 */
51int opt_default(const char *opt, const char *arg);
52
ea9c581f 53/**
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54 * Sets the libav* libraries log level.
55 */
56int opt_loglevel(const char *opt, const char *arg);
57
58/**
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59 * Limit the execution time.
60 */
61int opt_timelimit(const char *opt, const char *arg);
62
63/**
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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.
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67 *
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
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73 * @param min the minimum valid accepted value
74 * @param max the maximum valid accepted value
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75 */
76double parse_number_or_die(const char *context, const char *numstr, int type, double min, double max);
77
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78/**
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.
82 *
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
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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
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88 * date
89 *
748061de 90 * @see parse_date()
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91 */
92int64_t parse_time_or_die(const char *context, const char *timestr, int is_duration);
93
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94typedef struct {
95 const char *name;
96 int flags;
97#define HAS_ARG 0x0001
98#define OPT_BOOL 0x0002
99#define OPT_EXPERT 0x0004
100#define OPT_STRING 0x0008
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101#define OPT_VIDEO 0x0010
102#define OPT_AUDIO 0x0020
103#define OPT_GRAB 0x0040
26d4f26b 104#define OPT_INT 0x0080
394c4d77 105#define OPT_FLOAT 0x0100
ae27975d 106#define OPT_SUBTITLE 0x0200
8bbf6db9 107#define OPT_FUNC2 0x0400
ffdf9a1f 108#define OPT_INT64 0x0800
a0b3bcd9 109#define OPT_EXIT 0x1000
ae27975d 110 union {
8bbf6db9 111 void (*func_arg)(const char *); //FIXME passing error code as int return would be nicer then exit() in the func
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112 int *int_arg;
113 char **str_arg;
1f631450 114 float *float_arg;
8bbf6db9 115 int (*func2_arg)(const char *, const char *);
ffdf9a1f 116 int64_t *int64_arg;
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117 } u;
118 const char *help;
119 const char *argname;
120} OptionDef;
121
02d504a7 122void show_help_options(const OptionDef *options, const char *msg, int mask, int value);
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123
124/**
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.
131 */
132void parse_options(int argc, char **argv, const OptionDef *options,
133 void (* parse_arg_function)(const char*));
134
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135void set_context_opts(void *ctx, void *opts_ctx, int flags);
136
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137void print_error(const char *filename, int err);
138
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139void list_fmts(void (*get_fmt_string)(char *buf, int buf_size, int fmt), int nb_fmts);
140
f35917b2 141/**
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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
144 * the program.
86074ed1 145 */
ea9c581f 146void show_banner(void);
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147
148/**
15067504 149 * Prints the version of the program to stdout. The version message
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150 * depends on the current versions of the repository and of the libav*
151 * libraries.
86074ed1 152 */
64555bd9 153void show_version(void);
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154
155/**
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156 * Prints the license of the program to stdout. The license depends on
157 * the license of the libraries compiled into the program.
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158 */
159void show_license(void);
160
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161/**
162 * Prints a listing containing all the formats supported by the
163 * program.
164 */
165void show_formats(void);
166
090b61b2 167/**
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168 * Prints a listing containing all the codecs supported by the
169 * program.
170 */
171void show_codecs(void);
172
173/**
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174 * Prints a listing containing all the filters supported by the
175 * program.
176 */
177void show_filters(void);
178
179/**
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180 * Prints a listing containing all the bit stream filters supported by the
181 * program.
182 */
183void show_bsfs(void);
184
185/**
186 * Prints a listing containing all the protocols supported by the
187 * program.
188 */
189void show_protocols(void);
190
191/**
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192 * Prints a listing containing all the pixel formats supported by the
193 * program.
194 */
195void show_pix_fmts(void);
196
197/**
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198 * Returns a positive value if reads from standard input a line
199 * starting with [yY], otherwise returns 0.
200 */
201int read_yesno(void);
202
5b21bdab 203#endif /* FFMPEG_CMDUTILS_H */