options: slightly better option update mechanism

Extend the flag-based notification mechanism that was used via
M_OPT_TERM. Make the vo_opengl update mechanism use this (which, btw.,
also fixes compilation with OpenGL renderers forcibly disabled).

While this adds a 3rd mechanism and just seems to further the chaos, I'd
rather have a very simple mechanism now, than actually furthering the
mess by mixing old and new update mechanisms. In particular, we'll be
able to remove quite some property implementations, and replace them
with much simpler update handling. The new update mechanism can also
more easily refactored once we have a final mechanism that handles
everything in an uniform way.

1 files changed, 1 insertions, 0 deletions

diff --git a/player/command.h b/player/command.h
index 33e5b74927..27a4d39913 100644
--- a/player/command.h
+++ b/player/command.h
@@ -37,6 +37,7 @@ int mp_property_do(const char* name, int action, void* val,
                    struct MPContext *mpctx);
 
 int mp_on_set_option(void *ctx, struct m_config_option *co, void *data, int flags);
+void mp_option_change_callback(void *ctx, struct m_config_option *co, int flags);
 
 void mp_notify(struct MPContext *mpctx, int event, void *arg);
 void mp_notify_property(struct MPContext *mpctx, const char *property);