lavfi: add priv class to filter definitions and flags to filter internal options

This allows the iteration callbacks to discover the internal class and
options, and show them when required.

1 files changed, 5 insertions, 3 deletions

diff --git a/libavfilter/af_join.c b/libavfilter/af_join.c
index 902cacdbed..4ca4263bce 100644
--- a/libavfilter/af_join.c
+++ b/libavfilter/af_join.c
@@ -76,13 +76,14 @@ typedef struct JoinBufferPriv {
 
 #define OFFSET(x) offsetof(JoinContext, x)
 #define A AV_OPT_FLAG_AUDIO_PARAM
+#define F AV_OPT_FLAG_FILTERING_PARAM
 static const AVOption join_options[] = {
-    { "inputs",         "Number of input streams.", OFFSET(inputs),             AV_OPT_TYPE_INT,    { 2 }, 1, INT_MAX,       A },
+    { "inputs",         "Number of input streams.", OFFSET(inputs),             AV_OPT_TYPE_INT,    { 2 }, 1, INT_MAX,       A|F },
     { "channel_layout", "Channel layout of the "
-                        "output stream.",           OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, {.str = "stereo"}, 0, 0, A },
+                        "output stream.",           OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, {.str = "stereo"}, 0, 0, A|F },
     { "map",            "A comma-separated list of channels maps in the format "
                         "'input_stream.input_channel-output_channel.",
-                                                    OFFSET(map),                AV_OPT_TYPE_STRING,                 .flags = A },
+                                                    OFFSET(map),                AV_OPT_TYPE_STRING,                 .flags = A|F },
     { NULL },
 };
 
@@ -499,4 +500,5 @@ AVFilter avfilter_af_join = {
                                        .config_props  = join_config_output,
                                        .request_frame = join_request_frame, },
                                      { NULL }},
+    .priv_class = &join_class,
 };