surfaceflinger: add getDisplayStats() method

This is used by media service to schedule video frames at the
proper time, based on precise vsync timings.

Bug: 14659809
Change-Id: I1a90603f3dc09dca9aa4f90a3aa845fab56e0a5e

1 files changed, 31 insertions, 0 deletions

diff --git a/include/ui/DisplayStatInfo.h b/include/ui/DisplayStatInfo.h
new file mode 100644
index 000000000..0549a832b
--- /dev/null
+++ b/include/ui/DisplayStatInfo.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_UI_DISPLAY_STAT_INFO_H
+#define ANDROID_UI_DISPLAY_STAT_INFO_H
+
+#include <utils/Timers.h>
+
+namespace android {
+
+struct DisplayStatInfo {
+    nsecs_t vsyncTime;
+    nsecs_t vsyncPeriod;
+};
+
+}; // namespace android
+
+#endif // ANDROID_COMPOSER_DISPLAY_STAT_INFO_H