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2ba45a60 DM |
1 | /* |
2 | * Copyright (c) 2012 Anton Khirnov | |
3 | * | |
4 | * This file is part of FFmpeg. | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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 | |
19 | */ | |
20 | ||
21 | /* | |
22 | * generate texinfo manpages for avoptions | |
23 | */ | |
24 | ||
25 | #include <stddef.h> | |
26 | #include <string.h> | |
27 | #include <float.h> | |
28 | ||
f6fa7814 DM |
29 | // print_options is build for the host, os_support.h isn't needed and is setup |
30 | // for the target. without this build breaks on mingw | |
31 | #define AVFORMAT_OS_SUPPORT_H | |
32 | ||
2ba45a60 DM |
33 | #include "libavformat/avformat.h" |
34 | #include "libavformat/options_table.h" | |
35 | #include "libavcodec/avcodec.h" | |
36 | #include "libavcodec/options_table.h" | |
37 | #include "libavutil/opt.h" | |
38 | ||
39 | static void print_usage(void) | |
40 | { | |
41 | fprintf(stderr, "Usage: enum_options type\n" | |
42 | "type: format codec\n"); | |
43 | exit(1); | |
44 | } | |
45 | ||
46 | static void print_option(const AVOption *opts, const AVOption *o, int per_stream) | |
47 | { | |
48 | if (!(o->flags & (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM))) | |
49 | return; | |
50 | ||
51 | printf("@item -%s%s @var{", o->name, per_stream ? "[:stream_specifier]" : ""); | |
52 | switch (o->type) { | |
53 | case AV_OPT_TYPE_BINARY: printf("hexadecimal string"); break; | |
54 | case AV_OPT_TYPE_STRING: printf("string"); break; | |
55 | case AV_OPT_TYPE_INT: | |
56 | case AV_OPT_TYPE_INT64: printf("integer"); break; | |
57 | case AV_OPT_TYPE_FLOAT: | |
58 | case AV_OPT_TYPE_DOUBLE: printf("float"); break; | |
59 | case AV_OPT_TYPE_RATIONAL: printf("rational number"); break; | |
60 | case AV_OPT_TYPE_FLAGS: printf("flags"); break; | |
61 | default: printf("value"); break; | |
62 | } | |
63 | printf("} (@emph{"); | |
64 | ||
65 | if (o->flags & AV_OPT_FLAG_DECODING_PARAM) { | |
66 | printf("input"); | |
67 | if (o->flags & AV_OPT_FLAG_ENCODING_PARAM) | |
68 | printf("/"); | |
69 | } | |
70 | if (o->flags & AV_OPT_FLAG_ENCODING_PARAM) printf("output"); | |
71 | if (o->flags & AV_OPT_FLAG_AUDIO_PARAM) printf(",audio"); | |
72 | if (o->flags & AV_OPT_FLAG_VIDEO_PARAM) printf(",video"); | |
73 | if (o->flags & AV_OPT_FLAG_SUBTITLE_PARAM) printf(",subtitles"); | |
74 | ||
75 | printf("})\n"); | |
76 | if (o->help) | |
77 | printf("%s\n", o->help); | |
78 | ||
79 | if (o->unit) { | |
80 | const AVOption *u; | |
81 | printf("\nPossible values:\n@table @samp\n"); | |
82 | ||
83 | for (u = opts; u->name; u++) { | |
84 | if (u->type == AV_OPT_TYPE_CONST && u->unit && !strcmp(u->unit, o->unit)) | |
85 | printf("@item %s\n%s\n", u->name, u->help ? u->help : ""); | |
86 | } | |
87 | printf("@end table\n"); | |
88 | } | |
89 | } | |
90 | ||
91 | static void show_opts(const AVOption *opts, int per_stream) | |
92 | { | |
93 | const AVOption *o; | |
94 | ||
95 | printf("@table @option\n"); | |
96 | for (o = opts; o->name; o++) { | |
97 | if (o->type != AV_OPT_TYPE_CONST) | |
98 | print_option(opts, o, per_stream); | |
99 | } | |
100 | printf("@end table\n"); | |
101 | } | |
102 | ||
103 | static void show_format_opts(void) | |
104 | { | |
105 | printf("@section Format AVOptions\n"); | |
106 | show_opts(avformat_options, 0); | |
107 | } | |
108 | ||
109 | static void show_codec_opts(void) | |
110 | { | |
111 | printf("@section Codec AVOptions\n"); | |
112 | show_opts(avcodec_options, 1); | |
113 | } | |
114 | ||
115 | int main(int argc, char **argv) | |
116 | { | |
117 | if (argc < 2) | |
118 | print_usage(); | |
119 | ||
120 | printf("@c DO NOT EDIT THIS FILE!\n" | |
121 | "@c It was generated by print_options.\n\n"); | |
122 | if (!strcmp(argv[1], "format")) | |
123 | show_format_opts(); | |
124 | else if (!strcmp(argv[1], "codec")) | |
125 | show_codec_opts(); | |
126 | else | |
127 | print_usage(); | |
128 | ||
129 | return 0; | |
130 | } |