diff options
| -rw-r--r-- | cmdutils.c | 40 | ||||
| -rw-r--r-- | doc/avtools-common-opts.texi | 4 |
2 files changed, 44 insertions, 0 deletions
diff --git a/cmdutils.c b/cmdutils.c index f43f70120a..feee51ce51 100644 --- a/cmdutils.c +++ b/cmdutils.c @@ -1268,6 +1268,44 @@ static void show_help_muxer(const char *name) show_help_children(fmt->priv_class, AV_OPT_FLAG_ENCODING_PARAM); } +static void show_help_filter(const char *name) +{ + const AVFilter *f = avfilter_get_by_name(name); + int i, count; + + if (!name) { + av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n"); + return; + } else if (!f) { + av_log(NULL, AV_LOG_ERROR, "Unknown filter '%s'.\n", name); + return; + } + + printf("Filter %s [%s]:\n", f->name, f->description); + + printf(" Inputs:\n"); + count = avfilter_pad_count(f->inputs); + for (i = 0; i < count; i++) { + printf(" %d %s (%s)\n", i, avfilter_pad_get_name(f->inputs, i), + media_type_string(avfilter_pad_get_type(f->inputs, i))); + } + if (f->flags & AVFILTER_FLAG_DYNAMIC_INPUTS) + printf(" dynamic (depending on the options)\n"); + + printf(" Outputs:\n"); + count = avfilter_pad_count(f->outputs); + for (i = 0; i < count; i++) { + printf(" %d %s (%s)\n", i, avfilter_pad_get_name(f->outputs, i), + media_type_string(avfilter_pad_get_type(f->outputs, i))); + } + if (f->flags & AVFILTER_FLAG_DYNAMIC_OUTPUTS) + printf(" dynamic (depending on the options)\n"); + + if (f->priv_class) + show_help_children(f->priv_class, AV_OPT_FLAG_VIDEO_PARAM | + AV_OPT_FLAG_AUDIO_PARAM); +} + int show_help(void *optctx, const char *opt, const char *arg) { char *topic, *par; @@ -1288,6 +1326,8 @@ int show_help(void *optctx, const char *opt, const char *arg) show_help_demuxer(par); } else if (!strcmp(topic, "muxer")) { show_help_muxer(par); + } else if (!strcmp(topic, "filter")) { + show_help_filter(par); } else { show_help_default(topic, par); } diff --git a/doc/avtools-common-opts.texi b/doc/avtools-common-opts.texi index afd2cc3876..4be54125de 100644 --- a/doc/avtools-common-opts.texi +++ b/doc/avtools-common-opts.texi @@ -74,6 +74,10 @@ Print detailed information about the demuxer named @var{demuxer_name}. Use the Print detailed information about the muxer named @var{muxer_name}. Use the @option{-formats} option to get a list of all muxers and demuxers. +@item filter=@var{filter_name} +Print detailed information about the filter name @var{filter_name}. Use the +@option{-filters} option to get a list of all filters. + @end table @item -version |