usbcamera: initial implementation of default usb camera HAL

* Basic skeleton of usb camera hal implementation
* Vendor tag is not supported yet
* Further usb camera hal implementation can be filled into UsbCamera.cpp
* Hot plug thread need to be implemented

Change-Id: Ida63b6d640e32192f5b60a280d9d5106d80e523f
diff --git a/modules/usbcamera/Android.mk b/modules/usbcamera/Android.mk
new file mode 100644
index 0000000..162b158
--- /dev/null
+++ b/modules/usbcamera/Android.mk
@@ -0,0 +1,45 @@
+# Copyright (C) 2015 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.
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := camera.usb.default
+LOCAL_MODULE_RELATIVE_PATH := hw
+
+LOCAL_C_INCLUDES += \
+	system/core/include \
+	system/media/camera/include \
+
+LOCAL_SRC_FILES := \
+	CameraHAL.cpp \
+	Camera.cpp \
+	UsbCamera.cpp \
+	Metadata.cpp \
+	Stream.cpp \
+	HotplugThread.cpp \
+
+LOCAL_SHARED_LIBRARIES := \
+	libcamera_metadata \
+	libcutils \
+	liblog \
+	libsync \
+	libutils \
+
+LOCAL_CFLAGS += -Wall -Wextra -fvisibility=hidden
+
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_SHARED_LIBRARY)