1 files changed, 5 insertions, 0 deletions
diff --git a/options/m_option.h b/options/m_option.h
index a1039e2a82..405b59da0a 100644
--- a/options/m_option.h
+++ b/options/m_option.h
@@ -32,6 +32,7 @@ typedef struct m_option m_option_t;
 struct m_config;
 struct mp_log;
 struct mpv_node;
+struct mpv_global;
 
 ///////////////////////////// Options types declarations ////////////////////
 
@@ -129,6 +130,10 @@ struct m_obj_desc {
     bool hidden;
     // Callback to print custom help if "help" is passed
     void (*print_help)(struct mp_log *log);
+    // Callback that allows you to override the static default values. The
+    // pointer p points to the struct described by options/priv_size, with
+    // priv_defaults already applied. You can write to it to set any defaults.
+    void (*set_defaults)(struct mpv_global *global, void *p);
     // Set by m_obj_list_find(). If the requested name is an old alias, this
     // is set to the old name (while the name field uses the new name).
     const char *replaced_name;