1 files changed, 71 insertions, 0 deletions
diff --git a/include/private/surface_control_private.h b/include/private/surface_control_private.h
new file mode 100644
index 0000000000..37a476e679
--- /dev/null
+++ b/include/private/surface_control_private.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2021 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_PRIVATE_NATIVE_SURFACE_CONTROL_H
+#define ANDROID_PRIVATE_NATIVE_SURFACE_CONTROL_H
+
+#include <stdint.h>
+
+__BEGIN_DECLS
+
+struct ASurfaceControl;
+struct ASurfaceControlStats;
+
+typedef struct ASurfaceControlStats ASurfaceControlStats;
+
+/**
+ * Callback to be notified when surface stats for a specific surface control are available.
+ */
+typedef void (*ASurfaceControl_SurfaceStatsListener)(void* context,
+        ASurfaceControl* control, ASurfaceControlStats* stats);
+
+/**
+ * Registers a callback to be invoked when surface stats from a specific surface are available.
+ *
+ * \param context Optional context provided by the client that is passed into
+ * the callback.
+ *
+ * \param control The surface to retrieve callbacks for.
+ *
+ * \param func The callback to be invoked when surface stats are available.
+ */
+void ASurfaceControl_registerSurfaceStatsListener(ASurfaceControl* control, void* context,
+        ASurfaceControl_SurfaceStatsListener func);
+
+/**
+ * Unregisters a callback to be invoked when surface stats from a specific surface are available.
+ *
+ * \param context The context passed into ASurfaceControl_registerSurfaceStatsListener
+ *
+ * \param func The callback passed into ASurfaceControl_registerSurfaceStatsListener
+ */
+void ASurfaceControl_unregisterSurfaceStatsListener(void* context,
+                                       ASurfaceControl_SurfaceStatsListener func);
+
+/**
+ * Returns the timestamp of when the buffer was acquired for a specific frame with frame number
+ * obtained from ASurfaceControlStats_getFrameNumber.
+ */
+int64_t ASurfaceControlStats_getAcquireTime(ASurfaceControlStats* stats);
+
+/**
+ * Returns the frame number of the surface stats object passed into the callback.
+ */
+uint64_t ASurfaceControlStats_getFrameNumber(ASurfaceControlStats* stats);
+
+__END_DECLS
+
+#endif //ANDROID_PRIVATE_NATIVE_SURFACE_CONTROL_H