Camera service: Add skeleton support for camera2 devices.

- Add Camera2Client, which maps the current android.hardware.Camera
  API to the new camera2 semantics
- Add Camera2Device, a C++ wrapper for the HAL camera 2 device

No functionality besides create/destroy; all client methods return
error or null.

Bug: 6243944
Change-Id: I6bd5136fa1efd8279b8cd2d9847d9b0bb2862294
diff --git a/services/camera/libcameraservice/Camera2Device.h b/services/camera/libcameraservice/Camera2Device.h
new file mode 100644
index 0000000..0ce5421
--- /dev/null
+++ b/services/camera/libcameraservice/Camera2Device.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2012 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_SERVERS_CAMERA_CAMERA2DEVICE_H
+#define ANDROID_SERVERS_CAMERA_CAMERA2DEVICE_H
+
+#include <utils/RefBase.h>
+#include <utils/Errors.h>
+#include "hardware/camera2.h"
+
+namespace android {
+
+class Camera2Device : public virtual RefBase {
+  public:
+    Camera2Device(const char *name);
+
+    ~Camera2Device();
+
+    status_t initialize(hw_module_t *module);
+  private:
+
+    const char *mName;
+    camera2_device_t *mDevice;
+
+};
+
+}; // namespace android
+
+#endif