vo_opengl: win32: test for exclusive mode

This is a hack, but unfortunately the DwmGetCompositionTimingInfo
heuristic does not work in all cases (with multiple-monitors on Windows
8.1 and even with a single monitor in Windows 10.) See the comment in
mp_w32_is_in_exclusive_mode() for more details.

It should go without saying that if any better method of doing this
reveals itself, this hack should be dropped.

1 files changed, 26 insertions, 0 deletions

diff --git a/video/out/win32/exclusive_hack.h b/video/out/win32/exclusive_hack.h
new file mode 100644
index 0000000000..883e2159fa
--- /dev/null
+++ b/video/out/win32/exclusive_hack.h
@@ -0,0 +1,26 @@
+/*
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MP_WIN32_EXCLUSIVE_HACK_H_
+#define MP_WIN32_EXCLUSIVE_HACK_H_
+
+#include <stdbool.h>
+
+// Returns true if any program on the computer is in exclusive fullscreen mode
+bool mp_w32_is_in_exclusive_mode(void);
+
+#endif