avfilter/f_loop: switch aloop to activate

[ffmpeg] / libavfilter / avfilter.c

diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index 93e866b79c8e11c49722e661dbbacc68a40c9eb5..09f33e0e7c201690de2539dffe46f65174e6cc86 100644 (file)
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -884,6 +884,19 @@ static int process_options(AVFilterContext *ctx, AVDictionary **options,
     return count;
 }
 
+int ff_filter_process_command(AVFilterContext *ctx, const char *cmd,
+                              const char *arg, char *res, int res_len, int flags)
+{
+    const AVOption *o;
+
+    if (!ctx->filter->priv_class)
+        return 0;
+    o = av_opt_find2(ctx->priv, cmd, NULL, AV_OPT_FLAG_RUNTIME_PARAM | AV_OPT_FLAG_FILTERING_PARAM, AV_OPT_SEARCH_CHILDREN, NULL);
+    if (!o)
+        return AVERROR(ENOSYS);
+    return av_opt_set(ctx->priv, cmd, arg, 0);
+}
+
 int avfilter_init_dict(AVFilterContext *ctx, AVDictionary **options)
 {
     int ret = 0;