Signed-off-by: Steven Liu <l...@chinaffmpeg.org>
---
fftools/cmdutils.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/fftools/cmdutils.c b/fftools/cmdutils.c
index 84f98b7c04..fe18093ce1 100644
--- a/fftools/cmdutils.c
+++ b/fftools/cmdutils.c
@@ -1870,6 +1870,21 @@ static void show_help_demuxer(const char *name)
show_help_children(fmt->priv_class, AV_OPT_FLAG_DECODING_PARAM);
}
+static void show_help_protocol(const char *name)
+{
+ const URLProtocol *proto = av_find_protocol_by_name(name);;
+
+ if (!proto) {
+ av_log(NULL, AV_LOG_ERROR, "Unknown protocol '%s'.\n", name);
+ return;
+ }
+
+ printf("Protocol %s:\n", name);
+
+ if (proto->priv_data_class)
+ show_help_children(proto->priv_data_class, AV_OPT_FLAG_DECODING_PARAM);
+}
+
static void show_help_muxer(const char *name)
{
const AVCodecDescriptor *desc;
@@ -2000,6 +2015,8 @@ 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, "protocol")) {
+ show_help_protocol(par);
#if CONFIG_AVFILTER
} else if (!strcmp(topic, "filter")) {
show_help_filter(par);
--
2.15.1
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