-vo xv tearing with double buffering

[syscrash2k@…]

-vo xv has tearing with double buffering, at least on radeonhd.
This seems to be a regression, since ​http://lists.mplayerhq.hu/pipermail/mplayer-dev-eng/2004-June/026886.html
describes the problem (XFlush versus XSync) and the solution.

Changing the single instance of XFlush to XSync in vo_xv.c fixes the problem; here's a patch:

--- begin patch

diff --git a/libvo/vo_xv.c b/libvo/vo_xv.c
index 1085f51..0458613 100644
--- a/libvo/vo_xv.c
+++ b/libvo/vo_xv.c
@@ -479,7 +479,7 @@ static void flip_page(struct vo *vo)

if (ctx->num_buffers > 1) {

ctx->current_buf = vo_directrendering ? 0 : ((ctx->current_buf + 1) %

ctx->num_buffers);

• XFlush(vo->x11->display);

+ XSync(vo->x11->display, False);

} else

XSync(vo->x11->display, False);

return;

--- end patch

[syscrash2k@…]

Patch to fix tearing