2 * Copyright (c) 2011 Anton Khirnov
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 * enumerate avoptions and format them in texinfo format
27 #include "libavformat/avformat.h"
28 #include "libavcodec/avcodec.h"
29 #include "libavutil/log.h"
30 #include "libavutil/opt.h"
32 static void print_usage(void)
34 fprintf(stderr, "Usage: enum_options type\n"
35 "type: format codec\n");
39 static void print_option(const AVClass *class, const AVOption *o)
41 printf("@item -%s @var{", o->name);
43 case FF_OPT_TYPE_BINARY: printf("hexadecimal string"); break;
44 case FF_OPT_TYPE_STRING: printf("string"); break;
46 case FF_OPT_TYPE_INT64: printf("integer"); break;
47 case FF_OPT_TYPE_FLOAT:
48 case FF_OPT_TYPE_DOUBLE: printf("float"); break;
49 case FF_OPT_TYPE_RATIONAL: printf("rational number"); break;
50 case FF_OPT_TYPE_FLAGS: printf("flags"); break;
51 default: printf("value"); break;
55 if (o->flags & AV_OPT_FLAG_ENCODING_PARAM) {
57 if (o->flags & AV_OPT_FLAG_ENCODING_PARAM)
60 if (o->flags & AV_OPT_FLAG_ENCODING_PARAM)
65 printf("%s\n", o->help);
68 const AVOption *u = NULL;
69 printf("\nPossible values:\n@table @samp\n");
71 while ((u = av_next_option(&class, u)))
72 if (u->type == FF_OPT_TYPE_CONST && u->unit && !strcmp(u->unit, o->unit))
73 printf("@item %s\n%s\n", u->name, u->help ? u->help : "");
74 printf("@end table\n");
78 static void show_opts(const AVClass *class)
80 const AVOption *o = NULL;
82 printf("@table @option\n");
83 while ((o = av_next_option(&class, o)))
84 if (o->type != FF_OPT_TYPE_CONST)
85 print_option(class, o);
86 printf("@end table\n");
89 static void show_format_opts(void)
91 AVInputFormat *iformat = NULL;
92 AVOutputFormat *oformat = NULL;
94 printf("@section Generic format AVOptions\n");
95 show_opts(avformat_get_class());
97 printf("@section Format-specific AVOptions\n");
98 while ((iformat = av_iformat_next(iformat))) {
99 if (!iformat->priv_class)
101 printf("@subsection %s AVOptions\n", iformat->priv_class->class_name);
102 show_opts(iformat->priv_class);
104 while ((oformat = av_oformat_next(oformat))) {
105 if (!oformat->priv_class)
107 printf("@subsection %s AVOptions\n", oformat->priv_class->class_name);
108 show_opts(oformat->priv_class);
112 static void show_codec_opts(void)
116 printf("@section Generic codec AVOptions\n");
117 show_opts(avcodec_get_class());
119 printf("@section Codec-specific AVOptions\n");
120 while ((c = av_codec_next(c))) {
123 printf("@subsection %s AVOptions\n", c->priv_class->class_name);
124 show_opts(c->priv_class);
128 int main(int argc, char **argv)
135 if (!strcmp(argv[1], "format"))
137 else if (!strcmp(argv[1], "codec"))