m_config: refactor option defaults handling

Keep track of the default values directly, instead of creating a new
instance of the option struct just to get the defaults.

Also get rid of the special handling of m_obj_desc.init_options.
Instead, handle it purely by the option parser. Originally, I wanted to
handle --vo=opengl-hq and --vo=direct3d_shaders with this (by making
them aliases to the real VOs with a different preset), but since --vo
=opengl-hq=help prints the wrong values (as consequence of the
simplification), I'm not doing that, and instead use something
different.

1 files changed, 2 insertions, 2 deletions

diff --git a/mpvcore/m_option.h b/mpvcore/m_option.h
index 96219b317a..d357456f63 100644
--- a/mpvcore/m_option.h
+++ b/mpvcore/m_option.h
@@ -107,8 +107,8 @@ struct m_obj_desc {
     // For free use by the implementer of m_obj_list.get_desc
     const void *p;
     // If not NULL, options which should be set before applying other options.
-    // This member is usually set my m_obj_list_find() only.
-    // Only works if options is not NULL.
+    // This member is usually set by m_obj_list_find() only, and read by the
+    // option parser. It's not used anywhere else.
     const char *init_options;
     // Don't list entries with "help"
     bool hidden;