Implement Widevine drm HIDL HAL service.

Modify Android mediadrm and mediacrypto glue layer to use
HIDL interface.

Test: Play Movies (streaming and offline playback)

Test: ANDROID_BUILD_TOP= ./android-gts/tools/gts-tradefed
run gts -m GtsMediaTestCases

Test:
adb shell /system/bin/libwvdrmengine_hidl_test

Test:
adb shell /system/bin/libwvdrmmediacrypto_hidl_test

Test:
adb shell /system/bin/libwvdrmdrmplugin_hidl_test

bug: 34628973
Change-Id: Icd5f2dd556acb9874697963b4d7d62cb7c943e74

libwvdrmengine/src_hidl/WVCryptoFactory.cpp

@@ -0,0 +1,50 @@
+//
+// Copyright 2017 Google Inc. All Rights Reserved.
+//
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "WVCdm"
+#include <utils/Log.h>
+
+#include "WVCryptoFactory.h"
+#include "WVCDMSingleton.h"
+#include "WVCryptoPlugin.h"
+#include "WVUUID.h"
+
+namespace wvdrm {
+namespace hardware {
+namespace drm {
+namespace V1_0 {
+namespace widevine {
+
+using ::android::hardware::drm::V1_0::Status;
+using ::android::hardware::Void;
+
+Return<bool> WVCryptoFactory::isCryptoSchemeSupported(
+    const hidl_array<uint8_t, 16>& uuid) {
+  return isWidevineUUID(uuid.data());
+}
+
+Return<void> WVCryptoFactory::createPlugin(
+    const hidl_array<uint8_t, 16>& uuid,
+    const hidl_vec<uint8_t>& initData,
+    createPlugin_cb _hidl_cb) {
+
+  WVCryptoPlugin *plugin = NULL;
+  if (!isCryptoSchemeSupported(uuid.data())) {
+    ALOGE("Widevine Drm HAL: failed to create crypto plugin, " \
+        "invalid crypto scheme");
+    _hidl_cb(Status::ERROR_DRM_CANNOT_HANDLE, plugin);
+    return Void();
+  }
+
+  plugin = new WVCryptoPlugin(initData.data(), initData.size(), getCDM());
+  _hidl_cb(Status::OK, plugin);
+  return Void();
+}
+
+}  // namespace widevine
+}  // namespace V1_0
+}  // namespace drm
+}  // namespace hardware
+}  // namespace wvdrm