diff --git a/include/aosp/gtest/gtest_prod.h b/include/aosp/gtest/gtest_prod.h
new file mode 100644
index 00000000..e651671e
--- /dev/null
+++ b/include/aosp/gtest/gtest_prod.h
@@ -0,0 +1,61 @@
+// Copyright 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+//
+// Google C++ Testing and Mocking Framework definitions useful in production code.
+// GOOGLETEST_CM0003 DO NOT DELETE
+
+#ifndef GTEST_INCLUDE_GTEST_GTEST_PROD_H_
+#define GTEST_INCLUDE_GTEST_GTEST_PROD_H_
+
+// When you need to test the private or protected members of a class,
+// use the FRIEND_TEST macro to declare your tests as friends of the
+// class.  For example:
+//
+// class MyClass {
+//  private:
+//   void PrivateMethod();
+//   FRIEND_TEST(MyClassTest, PrivateMethodWorks);
+// };
+//
+// class MyClassTest : public testing::Test {
+//   // ...
+// };
+//
+// TEST_F(MyClassTest, PrivateMethodWorks) {
+//   // Can call MyClass::PrivateMethod() here.
+// }
+//
+// Note: The test class must be in the same namespace as the class being tested.
+// For example, putting MyClassTest in an anonymous namespace will not work.
+
+#define FRIEND_TEST(test_case_name, test_name)\
+friend class test_case_name##_##test_name##_Test
+
+#endif  // GTEST_INCLUDE_GTEST_GTEST_PROD_H_
diff --git a/include/cros/cros-camera/camera_mojo_channel_manager_token.h b/include/cros/cros-camera/camera_mojo_channel_manager_token.h
new file mode 100644
index 00000000..9da4b797
--- /dev/null
+++ b/include/cros/cros-camera/camera_mojo_channel_manager_token.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2020 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef CAMERA_INCLUDE_CROS_CAMERA_CAMERA_MOJO_CHANNEL_MANAGER_TOKEN_H_
+#define CAMERA_INCLUDE_CROS_CAMERA_CAMERA_MOJO_CHANNEL_MANAGER_TOKEN_H_
+
+#include "cros-camera/export.h"
+
+namespace cros {
+
+class CROS_CAMERA_EXPORT CameraMojoChannelManagerToken {
+ public:
+  static CameraMojoChannelManagerToken* CreateInstance();
+  virtual ~CameraMojoChannelManagerToken() {}
+};
+
+}  // namespace cros
+
+#endif  // CAMERA_INCLUDE_CROS_CAMERA_CAMERA_MOJO_CHANNEL_MANAGER_TOKEN_H_
diff --git a/include/cros/cros-camera/cros_camera_hal.h b/include/cros/cros-camera/cros_camera_hal.h
new file mode 100644
index 00000000..d445a2e8
--- /dev/null
+++ b/include/cros/cros-camera/cros_camera_hal.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2020 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef CAMERA_INCLUDE_CROS_CAMERA_CROS_CAMERA_HAL_H_
+#define CAMERA_INCLUDE_CROS_CAMERA_CROS_CAMERA_HAL_H_
+
+#define CROS_CAMERA_HAL_INFO_SYM CCHI
+#define CROS_CAMERA_HAL_INFO_SYM_AS_STR "CCHI"
+
+#include <base/callback.h>
+#include <hardware/camera_common.h>
+
+#include "cros-camera/camera_mojo_channel_manager_token.h"
+
+namespace cros {
+
+enum class PrivacySwitchState {
+  kUnknown,
+  kOn,
+  kOff,
+};
+
+// Synced with CameraClientType in cros_camera_service.mojom.
+enum class ClientType {
+  kUnknown = 0,
+  kTesting = 1,
+  kChrome = 2,
+  kAndroid = 3,
+  kPluginVm = 4,
+  kAshChrome = 5,
+  kLacrosChrome = 6
+};
+
+using PrivacySwitchStateChangeCallback =
+    base::RepeatingCallback<void(PrivacySwitchState state)>;
+
+typedef struct cros_camera_hal {
+  /**
+   * Sets up the camera HAL. The |token| can be used for communication through
+   * Mojo.
+   */
+  void (*set_up)(CameraMojoChannelManagerToken* token);
+
+  /**
+   * Tears down the camera HAL.
+   */
+  void (*tear_down)();
+
+  /**
+   * Registers camera privacy switch observer.
+   */
+  void (*set_privacy_switch_callback)(
+      PrivacySwitchStateChangeCallback callback);
+
+  /**
+   *  Open the camera device by client type.
+   */
+  int (*camera_device_open_ext)(const hw_module_t* module,
+                                const char* name,
+                                hw_device_t** device,
+                                ClientType client_type);
+
+  /**
+   * Gets the camera info by client type.
+   */
+  int (*get_camera_info_ext)(int id,
+                             struct camera_info* info,
+                             ClientType client_type);
+
+  /* reserved for future use */
+  void* reserved[4];
+} cros_camera_hal_t;
+
+}  // namespace cros
+
+#endif  // CAMERA_INCLUDE_CROS_CAMERA_CROS_CAMERA_HAL_H_
diff --git a/include/cros/cros-camera/export.h b/include/cros/cros-camera/export.h
new file mode 100644
index 00000000..67353e63
--- /dev/null
+++ b/include/cros/cros-camera/export.h
@@ -0,0 +1,11 @@
+/* Copyright 2018 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef CAMERA_INCLUDE_CROS_CAMERA_EXPORT_H_
+#define CAMERA_INCLUDE_CROS_CAMERA_EXPORT_H_
+
+#define CROS_CAMERA_EXPORT __attribute__((visibility("default")))
+
+#endif  // CAMERA_INCLUDE_CROS_CAMERA_EXPORT_H_
diff --git a/include/meson.build b/include/meson.build
index 2ac9a3a0..6f2e6cec 100644
--- a/include/meson.build
+++ b/include/meson.build
@@ -2,5 +2,10 @@
 
 libcamera_include_dir = 'libcamera'
 
+cros_includes = ([
+    include_directories('aosp'),
+    include_directories('cros')
+])
+
 subdir('android')
 subdir('libcamera')