Initial import of Widevine Common Encryption DRM engine

Builds libwvmdrmengine.so, which is loaded by the new
MediaDrm APIs to support playback of Widevine/CENC
protected content.

Change-Id: I6f57dd37083dfd96c402cb9dd137c7d74edc8f1c

libwvdrmengine/cdm/Android.mk

@@ -0,0 +1,63 @@
+LOCAL_PATH := $(call my-dir)
+
+# ----------------------------------------------------------------
+# Builds the protobuf static library and generate .pb.cc and .pb.h
+# license_protocol.pb.cc
+# license_protocol.pb.h
+# license_protocol.a
+#
+include $(CLEAR_VARS)
+LOCAL_MODULE := license_protocol_protos
+LOCAL_MODULE_CLASS := STATIC_LIBRARIES
+
+LOCAL_C_INCLUDES := \
+    bionic \
+    external/stlport/stlport
+
+LOCAL_SRC_FILES := \
+    $(call all-proto-files-under, core/src)
+
+include $(BUILD_STATIC_LIBRARY)
+
+# ----------------------------------------------------------------
+# Builds libcdm.a
+#
+include $(CLEAR_VARS)
+LOCAL_C_INCLUDES := \
+    bionic \
+    external/stlport/stlport \
+    vendor/widevine/libwvdrmengine/cdm/core/include \
+    vendor/widevine/libwvdrmengine/cdm/include \
+    vendor/widevine/libwvdrmengine/oemcrypto/include
+
+# Add protocol buffer generated headers
+#
+LOCAL_C_INCLUDES += \
+    $(proto_generated_cc_sources_dir)/$(LOCAL_PATH)/core/src \
+    external/protobuf/src \
+    ../oemcrypto/include
+
+LOCAL_ADDITIONAL_DEPENDENCIES += $(proto_generated_headers)
+
+SRC_DIR := src
+CORE_SRC_DIR := core/src
+LOCAL_SRC_FILES := \
+    $(CORE_SRC_DIR)/buffer_reader.cpp \
+    $(CORE_SRC_DIR)/cdm_engine.cpp \
+    $(CORE_SRC_DIR)/cdm_session.cpp \
+    $(CORE_SRC_DIR)/crypto_engine.cpp \
+    $(CORE_SRC_DIR)/crypto_session.cpp \
+    $(CORE_SRC_DIR)/license.cpp \
+    $(CORE_SRC_DIR)/policy_engine.cpp \
+    $(CORE_SRC_DIR)/string_conversions.cpp \
+    $(SRC_DIR)/clock.cpp \
+    $(SRC_DIR)/lock.cpp \
+    $(SRC_DIR)/log.cpp \
+    $(SRC_DIR)/timer.cpp \
+    $(SRC_DIR)/wv_content_decryption_module.cpp \
+
+LOCAL_MODULE := libcdm
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_STATIC_LIBRARY)
+