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Merge commit '7bb1c1bfd22de2200743af04ebd0c7c775f56f7e'

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* commit '7bb1c1bfd22de2200743af04ebd0c7c775f56f7e':
  avconv_opt: Allow printing private options

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
This commit is contained in:
Hendrik Leppkes 2015-09-17 11:46:34 +02:00
commit e34939ca76
1 changed files with 60 additions and 0 deletions
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60
ffmpeg_opt.c
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@ -2802,6 +2802,63 @@ static int opt_filter_complex_script(void *optctx, const char *opt, const char *
return 0;
}
/* Search a class from a codec, format, or filter, named 'opt', in order
* to extract its private options. If the class type is specified, only
* the associated options are printed, otherwise all the ones matching
* the input name are shown. */
static int show_help_specific(const char *opt)
{
AVCodec *codec = NULL;
AVFilter *filter = NULL;
AVInputFormat *iformat = NULL;
AVOutputFormat *oformat = NULL;
int flags = AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM |
AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM;
char *kind = av_get_token(&opt, ":");
if (!kind)
return 0;
if (*opt)
opt = &opt[1]; // skip ':'
show_usage();
if (!strcmp(kind, "decoder") &&
(codec = avcodec_find_decoder_by_name(opt)) && codec->priv_class)
show_help_children(codec->priv_class, flags);
else if (!strcmp(kind, "encoder") &&
(codec = avcodec_find_encoder_by_name(opt)) && codec->priv_class)
show_help_children(codec->priv_class, flags);
else if (!strcmp(kind, "demuxer") &&
(iformat = av_find_input_format(opt)) && iformat->priv_class)
show_help_children(iformat->priv_class, flags);
else if (!strcmp(kind, "muxer") &&
(oformat = av_guess_format(opt, NULL, NULL)) && oformat->priv_class)
show_help_children(oformat->priv_class, flags);
else if (!strcmp(kind, "filter") &&
(filter = avfilter_get_by_name(opt)) && filter->priv_class)
show_help_children(filter->priv_class, flags);
else if (*opt)
av_log(NULL, AV_LOG_ERROR,
"Unknown class '%s', only 'decoder', 'encoder', 'demuxer', "
"'muxer', or 'filter' are valid specifiers.\n", kind);
else {
if ((codec = avcodec_find_decoder_by_name(kind)) && codec->priv_class)
show_help_children(codec->priv_class, flags);
if ((codec = avcodec_find_encoder_by_name(kind)) && codec->priv_class)
show_help_children(codec->priv_class, flags);
if ((iformat = av_find_input_format(kind)) && iformat->priv_class)
show_help_children(iformat->priv_class, flags);
if ((oformat = av_guess_format(kind, NULL, NULL)) && oformat->priv_class)
show_help_children(oformat->priv_class, flags);
if ((filter = avfilter_get_by_name(kind)) && filter->priv_class)
show_help_children(filter->priv_class, flags);
}
av_freep(&kind);
return codec || iformat || oformat || filter;
}
void show_help_default(const char *opt, const char *arg)
{
/* per-file options have at least one of those set */
@ -2813,6 +2870,8 @@ void show_help_default(const char *opt, const char *arg)
show_advanced = 1;
else if (!strcmp(opt, "full"))
show_advanced = show_avoptions = 1;
else if (show_help_specific(opt))
return;
else
av_log(NULL, AV_LOG_ERROR, "Unknown help option '%s'.\n", opt);
}
@ -2823,6 +2882,7 @@ void show_help_default(const char *opt, const char *arg)
" -h -- print basic options\n"
" -h long -- print more options\n"
" -h full -- print all options (including all format and codec specific options, very long)\n"
" -h [type:]name -- print private options from a codec, format or filter named 'name' (set 'type' to print options from a single class)\n"
" See man %s for detailed description of the options.\n"
"\n", program_name);