From 999a46b12c8ac378fb099ec2e8dc498baea8ddef Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20B=C5=93sch?= <ubitux@gmail.com>
Date: Sun, 31 Mar 2013 15:04:04 +0200
Subject: [PATCH] cmdutils: support filters in the help topic system.
---
cmdutils.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/cmdutils.c b/cmdutils.c
index a280ff3d7cc..09a5ce139c2 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -1613,6 +1613,28 @@ 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 *filter;
+
+ if (!name) {
+ av_log(NULL, AV_LOG_ERROR, "No filter name specified.\n");
+ return;
+ }
+ filter = avfilter_get_by_name(name);
+ if (!filter) {
+ av_log(NULL, AV_LOG_ERROR, "Filter '%s' not found.\n", name);
+ return;
+ }
+ printf("Filter %s\n", filter->name);
+ if (filter->description)
+ printf(" %s\n", filter->description);
+ if (filter->priv_class)
+ show_help_children(filter->priv_class, AV_OPT_FLAG_FILTERING_PARAM);
+ else
+ printf("No AVOption available\n");
+}
+
int show_help(void *optctx, const char *opt, const char *arg)
{
char *topic, *par;
@@ -1633,6 +1655,8 @@ 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);
}
--
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