Use aidl interface for Widevine service.

The interface is defined in
hardware/interfaces/drm/aidl(http://go/ag/15329852).

Test: build
  m android.hardware.drm-service.widevine -j128

Test: build_and_run_all_unit_tests.sh
  for hidl tests

Test: atest VtsAidlHalDrmTargetTest

Bug: 200055138
Bug: 170964303
Change-Id: If2f2a129914436ba5cef1c46f6cb9415e12c3d1c

libwvdrmengine/aidl_src/service.cpp

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2021 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.
+ */
+#define LOG_TAG "WidevineAidlService"
+
+#include <android-base/logging.h>
+#include <android/binder_ibinder_platform.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <binder/ProcessState.h>
+
+#include "WVCreatePluginFactories.h"
+#include "WVCryptoFactory.h"
+#include "WVDrmFactory.h"
+
+using ::wvdrm::hardware::drm::widevine::createCryptoFactory;
+using ::wvdrm::hardware::drm::widevine::createDrmFactory;
+using ::wvdrm::hardware::drm::widevine::WVCryptoFactory;
+using ::wvdrm::hardware::drm::widevine::WVDrmFactory;
+
+int main(int /* argc */, char** /* argv */) {
+  ABinderProcess_setThreadPoolMaxThreadCount(8);
+
+  std::shared_ptr<WVDrmFactory> drmFactory = createDrmFactory();
+  const std::string drmInstance =
+      std::string(WVDrmFactory::descriptor) + "/widevine";
+  binder_status_t status = AServiceManager_addService(
+      drmFactory->asBinder().get(), drmInstance.c_str());
+  CHECK(status == STATUS_OK)
+      << "Failed to add Widevine Factory HAL, status=" << status;
+
+  std::shared_ptr<WVCryptoFactory> cryptoFactory = createCryptoFactory();
+  const std::string cryptoInstance =
+      std::string(WVCryptoFactory::descriptor) + "/widevine";
+  status = AServiceManager_addService(cryptoFactory->asBinder().get(),
+                                      cryptoInstance.c_str());
+  CHECK(status == STATUS_OK)
+      << "Failed to add Widevine Crypto HAL, status=" << status;
+
+  ABinderProcess_joinThreadPool();
+}