video/out: introduce vo_control for gl_common based VOs

Instead of having separate callbacks for each backend-handled feature
(like MPGLContext.fullscreen, MPGLContext.border, etc.), pass the
VOCTRL responsible for this directly to the backend. This allows
removing a bunch of callbacks, that currently must be set even for
optional/lesser features (like VOCTRL_BORDER).

This requires changes to all VOs using gl_common, as well as all
backends that support gl_common.

Also introduce VOCTRL_CHECK_EVENTS. vo.check_events is now optional.
VO backends can use VOCTRL_CHECK_EVENTS instead to implementing
check_events. This has the advantage that the event handling code in
VOs doesn't have to be duplicated if vo_control() is used.

1 files changed, 24 insertions, 0 deletions

diff --git a/video/out/x11_common.c b/video/out/x11_common.c
index c5da9ad055..b9625879e8 100644
--- a/video/out/x11_common.c
+++ b/video/out/x11_common.c
@@ -1385,6 +1385,30 @@ void vo_x11_border(struct vo *vo)
     vo_x11_decoration(vo, vo->opts->border && !vo->opts->fs);
 }
 
+int vo_x11_control(struct vo *vo, int *events, int request, void *arg)
+{
+    switch (request) {
+    case VOCTRL_CHECK_EVENTS:
+        *events |= vo_x11_check_events(vo);
+        return VO_TRUE;
+    case VOCTRL_FULLSCREEN:
+        vo_x11_fullscreen(vo);
+        *events |= VO_EVENT_RESIZE;
+        return VO_TRUE;
+    case VOCTRL_ONTOP:
+        vo_x11_ontop(vo);
+        return VO_TRUE;
+    case VOCTRL_BORDER:
+        vo_x11_border(vo);
+        *events |= VO_EVENT_RESIZE;
+        return VO_TRUE;
+    case VOCTRL_UPDATE_SCREENINFO:
+        vo_x11_update_screeninfo(vo);
+        return VO_TRUE;
+    }
+    return VO_NOTIMPL;
+}
+
 static void xscreensaver_heartbeat(struct vo_x11_state *x11)
 {
     unsigned int time = GetTimerMS();