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

Test:   atest vts_treble_vintf_vendor_test:vts_treble_vintf_vendor_test.DeviceManifest/SingleManifestTest#ManifestAidlHalsServed/0 -- --abi x86_64

Bug: 200055138
Bug: 170964303
Change-Id: I5654d90d8a4b0bae4b4a78e79b27c1cafec36be7

libwvdrmengine/aidl_include/WVDrmFactory.h

@@ -0,0 +1,71 @@
+//
+// Copyright 2021 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine License
+// Agreement.
+//
+
+#ifndef WV_DRM_FACTORY_H_
+#define WV_DRM_FACTORY_H_
+
+#include <aidl/android/hardware/drm/BnDrmFactory.h>
+#include <aidl/android/hardware/drm/IDrmFactory.h>
+#include <aidl/android/hardware/drm/IDrmPlugin.h>
+
+#include "WVGenericCryptoInterface.h"
+#include "WVTypes.h"
+
+namespace wvdrm {
+namespace hardware {
+namespace drm {
+namespace widevine {
+
+struct WVDrmFactory : public ::aidl::android::hardware::drm::BnDrmFactory {
+  WVDrmFactory() {}
+  virtual ~WVDrmFactory() {}
+
+  ::ndk::ScopedAStatus createPlugin(
+      const ::aidl::android::hardware::drm::Uuid& in_uuid,
+      const std::string& in_appPackageName,
+      std::shared_ptr<::aidl::android::hardware::drm::IDrmPlugin>* _aidl_return)
+      override;
+
+  ::ndk::ScopedAStatus getSupportedCryptoSchemes(
+      std::vector<::aidl::android::hardware::drm::Uuid>* _aidl_return) override;
+
+  ::ndk::ScopedAStatus isContentTypeSupported(const std::string& in_mimeType,
+                                              bool* _aidl_return) override;
+
+  // This overloaded method is not part of the AIDL interface, it is provided
+  // for Widevine CDM.
+  bool isCryptoSchemeSupported(
+      const ::aidl::android::hardware::drm::Uuid& in_uuid);
+
+  ::ndk::ScopedAStatus isCryptoSchemeSupported(
+      const ::aidl::android::hardware::drm::Uuid& in_uuid,
+      const std::string& in_mimeType,
+      ::aidl::android::hardware::drm::SecurityLevel in_securityLevel,
+      bool* _aidl_return) override;
+
+  binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
+
+ private:
+  WVDRM_DISALLOW_COPY_AND_ASSIGN(WVDrmFactory);
+
+  static WVGenericCryptoInterface sOemCryptoInterface;
+
+  static bool areSpoidsEnabled();
+  static bool isBlankAppPackageNameAllowed();
+  static int32_t firstApiLevel();
+  static std::string stringToHex(const std::string& input);
+  static void printCdmMetrics(int fd);
+  static void printCdmProperties(int fd);
+
+  friend class WVDrmFactoryTestPeer;
+};
+
+}  // namespace widevine
+}  // namespace drm
+}  // namespace hardware
+}  // namespace wvdrm
+
+#endif  // WV_DRM_FACTORY_H_