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diff --git a/src/type3_AndroidCloud/anbox-master/android/camera/EmulatedCameraCommon.h b/src/type3_AndroidCloud/anbox-master/android/camera/EmulatedCameraCommon.h
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+/*
+ * Copyright (C) 2011 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 HW_EMULATOR_CAMERA_EMULATED_CAMERA_COMMON_H
+#define HW_EMULATOR_CAMERA_EMULATED_CAMERA_COMMON_H
+
+/*
+ * Contains common declarations that are used across the camera emulation.
+ */
+
+#include <linux/videodev2.h>
+#include <hardware/camera.h>
+
+/* A helper class that tracks a routine execution.
+ * Basically, it dumps an enry message in its constructor, and an exit message
+ * in its destructor. Use LOGRE() macro (declared bellow) to create instances
+ * of this class at the beginning of the tracked routines / methods.
+ */
+class HWERoutineTracker {
+public:
+    /* Constructor that prints an "entry" trace message. */
+    explicit HWERoutineTracker(const char* name)
+            : mName(name) {
+        ALOGV("Entering %s", mName);
+    }
+
+    /* Destructor that prints a "leave" trace message. */
+    ~HWERoutineTracker() {
+        ALOGV("Leaving %s", mName);
+    }
+
+private:
+    /* Stores the routine name. */
+    const char* mName;
+};
+
+/* Logs an execution of a routine / method. */
+#define LOGRE() HWERoutineTracker hwertracker_##__LINE__(__FUNCTION__)
+
+/*
+ * min / max macros
+ */
+
+#define min(a,b)    (((a) < (b)) ? (a) : (b))
+#define max(a,b)    (((a) > (b)) ? (a) : (b))
+
+#endif  /* HW_EMULATOR_CAMERA_EMULATED_CAMERA_COMMON_H */