diff options
Diffstat (limited to 'tools/enum_options.c')
| -rw-r--r-- | tools/enum_options.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/tools/enum_options.c b/tools/enum_options.c new file mode 100644 index 0000000..45ac727 --- /dev/null +++ b/tools/enum_options.c @@ -0,0 +1,143 @@ +/* + * Copyright (c) 2011 Anton Khirnov + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * enumerate avoptions and format them in texinfo format + */ + +#include <string.h> + +#include "libavformat/avformat.h" +#include "libavcodec/avcodec.h" +#include "libavutil/log.h" +#include "libavutil/opt.h" + +static void print_usage(void) +{ + fprintf(stderr, "Usage: enum_options type\n" + "type: format codec\n"); + exit(1); +} + +static void print_option(const AVClass *class, const AVOption *o) +{ + printf("@item -%s @var{", o->name); + switch (o->type) { + case FF_OPT_TYPE_BINARY: printf("hexadecimal string"); break; + case FF_OPT_TYPE_STRING: printf("string"); break; + case FF_OPT_TYPE_INT: + case FF_OPT_TYPE_INT64: printf("integer"); break; + case FF_OPT_TYPE_FLOAT: + case FF_OPT_TYPE_DOUBLE: printf("float"); break; + case FF_OPT_TYPE_RATIONAL: printf("rational number"); break; + case FF_OPT_TYPE_FLAGS: printf("flags"); break; + default: printf("value"); break; + } + printf("} (@emph{"); + + if (o->flags & AV_OPT_FLAG_ENCODING_PARAM) { + printf("input"); + if (o->flags & AV_OPT_FLAG_ENCODING_PARAM) + printf("/"); + } + if (o->flags & AV_OPT_FLAG_ENCODING_PARAM) + printf("output"); + + printf("})\n"); + if (o->help) + printf("%s\n", o->help); + + if (o->unit) { + const AVOption *u = NULL; + printf("\nPossible values:\n@table @samp\n"); + + while ((u = av_next_option(&class, u))) + if (u->type == FF_OPT_TYPE_CONST && u->unit && !strcmp(u->unit, o->unit)) + printf("@item %s\n%s\n", u->name, u->help ? u->help : ""); + printf("@end table\n"); + } +} + +static void show_opts(const AVClass *class) +{ + const AVOption *o = NULL; + + printf("@table @option\n"); + while ((o = av_next_option(&class, o))) + if (o->type != FF_OPT_TYPE_CONST) + print_option(class, o); + printf("@end table\n"); +} + +static void show_format_opts(void) +{ + AVInputFormat *iformat = NULL; + AVOutputFormat *oformat = NULL; + + printf("@section Generic format AVOptions\n"); + show_opts(avformat_get_class()); + + printf("@section Format-specific AVOptions\n"); + while ((iformat = av_iformat_next(iformat))) { + if (!iformat->priv_class) + continue; + printf("@subsection %s AVOptions\n", iformat->priv_class->class_name); + show_opts(iformat->priv_class); + } + while ((oformat = av_oformat_next(oformat))) { + if (!oformat->priv_class) + continue; + printf("@subsection %s AVOptions\n", oformat->priv_class->class_name); + show_opts(oformat->priv_class); + } +} + +static void show_codec_opts(void) +{ + AVCodec *c = NULL; + + printf("@section Generic codec AVOptions\n"); + show_opts(avcodec_get_class()); + + printf("@section Codec-specific AVOptions\n"); + while ((c = av_codec_next(c))) { + if (!c->priv_class) + continue; + printf("@subsection %s AVOptions\n", c->priv_class->class_name); + show_opts(c->priv_class); + } +} + +int main(int argc, char **argv) +{ + if (argc < 2) + print_usage(); + + av_register_all(); + + if (!strcmp(argv[1], "format")) + show_format_opts(); + else if (!strcmp(argv[1], "codec")) + show_codec_opts(); + else + print_usage(); + + return 0; +} |
