x11: make all XF86 special keys mappable

Makes all keys documented in XF86keysym.h mappable. This requires the
user to deal with numeric keycodes; no names are queried or exported.

This is an easy way to avoid adding all the hundreds of XF86 keys to
our X11 lookup table and mpv's keycode/name list.

1 files changed, 7 insertions, 0 deletions

diff --git a/video/out/x11_common.c b/video/out/x11_common.c
index 0e02069ae6..1f933bfcae 100644
--- a/video/out/x11_common.c
+++ b/video/out/x11_common.c
@@ -611,6 +611,13 @@ static int vo_x11_lookupkey(int key)
     if (!mpkey)
         mpkey = lookup_keymap_table(keymap, key);
 
+    // XFree86 keysym range; typically contains obscure "extra" keys
+    if (!mpkey && key >= 0x10080001 && key <= 0x1008FFFF) {
+        mpkey = MP_KEY_UNKNOWN_RESERVED_START + (key - 0x10080000);
+        if (mpkey > MP_KEY_UNKNOWN_RESERVED_LAST)
+            mpkey = 0;
+    }
+
     return mpkey;
 }