1 files changed, 28 insertions, 0 deletions
diff --git a/video/out/opengl/oml_sync.h b/video/out/opengl/oml_sync.h
new file mode 100644
index 0000000000..e27ccb943f
--- /dev/null
+++ b/video/out/opengl/oml_sync.h
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+// Must be initialized to {0} by user.
+struct oml_sync {
+    bool state_ok;
+    int64_t last_ust;
+    int64_t last_msc;
+    int64_t last_sbc;
+    int64_t last_sbc_mp_time;
+    int64_t user_sbc;
+    int64_t vsync_duration;
+    int64_t last_skipped_vsyncs;
+    int64_t last_queue_display_time;
+};
+
+struct vo_vsync_info;
+
+// This must be called on every SwapBuffer call. Pass the ust/msc/sbc values
+// returned by a successful GetSyncValues call. Pass -1 for all these 3 values
+// if GetSyncValues returned failure (but note that you need to set them to -1
+// manually).
+void oml_sync_swap(struct oml_sync *oml, int64_t ust, int64_t msc, int64_t sbc);
+
+// Can be called any time; returns state determined by last oml_sync_swap() call.
+void oml_sync_get_info(struct oml_sync *oml, struct vo_vsync_info *info);