Add aidl interface support for Drm Framework

This change intends to make DrmHal/CryptoHal layer support aidl
interface implemented plugins.

Test: CtsMediaDrmTestCases, GtsMediaTestCases

Bug: 200055138
Bug: 170964303
Change-Id: I7056adf184acf1463cb4fc85e1c95ac88c2097f6
diff --git a/drm/libmediadrm/include/mediadrm/CryptoHal.h b/drm/libmediadrm/include/mediadrm/CryptoHal.h
index 5fd39e6..5be59f0 100644
--- a/drm/libmediadrm/include/mediadrm/CryptoHal.h
+++ b/drm/libmediadrm/include/mediadrm/CryptoHal.h
@@ -15,25 +15,12 @@
  */
 
 #ifndef CRYPTO_HAL_H_
-
 #define CRYPTO_HAL_H_
 
-#include <android/hardware/drm/1.0/ICryptoFactory.h>
-#include <android/hardware/drm/1.0/ICryptoPlugin.h>
-#include <android/hardware/drm/1.1/ICryptoFactory.h>
-#include <android/hardware/drm/1.2/ICryptoPlugin.h>
-#include <android/hardware/drm/1.4/ICryptoPlugin.h>
-
 #include <mediadrm/ICrypto.h>
 #include <utils/KeyedVector.h>
 #include <utils/threads.h>
 
-namespace drm = ::android::hardware::drm;
-using drm::V1_0::ICryptoFactory;
-using drm::V1_0::ICryptoPlugin;
-using drm::V1_0::SharedBuffer;
-using drm::V1_0::DestinationBuffer;
-
 using ::android::hardware::HidlMemory;
 
 class IMemoryHeap;
@@ -43,67 +30,30 @@
 struct CryptoHal : public ICrypto {
     CryptoHal();
     virtual ~CryptoHal();
-
     virtual status_t initCheck() const;
-
     virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]);
-
     virtual status_t createPlugin(
             const uint8_t uuid[16], const void *data, size_t size);
-
     virtual status_t destroyPlugin();
-
     virtual bool requiresSecureDecoderComponent(
             const char *mime) const;
-
     virtual void notifyResolution(uint32_t width, uint32_t height);
-
     virtual status_t setMediaDrmSession(const Vector<uint8_t> &sessionId);
-
     virtual ssize_t decrypt(const uint8_t key[16], const uint8_t iv[16],
             CryptoPlugin::Mode mode, const CryptoPlugin::Pattern &pattern,
-            const ::SharedBuffer &source, size_t offset,
+            const drm::V1_0::SharedBuffer &source, size_t offset,
             const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
-            const ::DestinationBuffer &destination,
+            const drm::V1_0::DestinationBuffer &destination,
             AString *errorDetailMsg);
-
-    virtual int32_t setHeap(const sp<HidlMemory>& heap) {
-        return setHeapBase(heap);
-    }
-    virtual void unsetHeap(int32_t seqNum) { clearHeapBase(seqNum); }
-
+    virtual int32_t setHeap(const sp<HidlMemory>& heap);
+    virtual void unsetHeap(int32_t seqNum);
     virtual status_t getLogMessages(Vector<drm::V1_4::LogMessage> &logs) const;
-
 private:
-    mutable Mutex mLock;
-
-    const Vector<sp<ICryptoFactory>> mFactories;
-    sp<ICryptoPlugin> mPlugin;
-    sp<drm::V1_2::ICryptoPlugin> mPluginV1_2;
-
-    /**
-     * mInitCheck is:
-     *   NO_INIT if a plugin hasn't been created yet
-     *   ERROR_UNSUPPORTED if a plugin can't be created for the uuid
-     *   OK after a plugin has been created and mPlugin is valid
-     */
-    status_t mInitCheck;
-
-    KeyedVector<int32_t, size_t> mHeapSizes;
-    int32_t mHeapSeqNum;
-
-    Vector<sp<ICryptoFactory>> makeCryptoFactories();
-    sp<ICryptoPlugin> makeCryptoPlugin(const sp<ICryptoFactory>& factory,
-            const uint8_t uuid[16], const void *initData, size_t size);
-
-    int32_t setHeapBase(const sp<HidlMemory>& heap);
-    void clearHeapBase(int32_t seqNum);
-
-    status_t checkSharedBuffer(const ::SharedBuffer& buffer);
-
+    sp<ICrypto> mCryptoHalHidl;
+    sp<ICrypto> mCryptoHalAidl;
     DISALLOW_EVIL_CONSTRUCTORS(CryptoHal);
 };
 
-}  // namespace android
+}
 
-#endif  // CRYPTO_HAL_H_
+#endif
\ No newline at end of file
diff --git a/drm/libmediadrm/include/mediadrm/CryptoHalAidl.h b/drm/libmediadrm/include/mediadrm/CryptoHalAidl.h
new file mode 100644
index 0000000..a25b091
--- /dev/null
+++ b/drm/libmediadrm/include/mediadrm/CryptoHalAidl.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#ifndef CRYPTO_HAL_AIDL_H_
+#define CRYPTO_HAL_AIDL_H_
+
+#include <aidl/android/hardware/drm/ICryptoFactory.h>
+#include <aidl/android/hardware/drm/ICryptoPlugin.h>
+
+#include <mediadrm/ICrypto.h>
+#include <utils/KeyedVector.h>
+#include <utils/threads.h>
+
+using ICryptoFactoryAidl = ::aidl::android::hardware::drm::ICryptoFactory;
+using ICryptoPluginAidl = ::aidl::android::hardware::drm::ICryptoPlugin;
+using ::aidl::android::hardware::drm::Uuid;
+
+// -------Hidl interface related-----------------
+// TODO: replace before removing hidl interface
+using ::android::hardware::drm::V1_0::DestinationBuffer;
+using ::android::hardware::drm::V1_0::SharedBuffer;
+
+using ::android::hardware::HidlMemory;
+
+// -------Hidl interface related end-------------
+
+class IMemoryHeap;
+
+namespace android {
+
+struct CryptoHalAidl : public ICrypto {
+    CryptoHalAidl();
+    virtual ~CryptoHalAidl();
+    virtual status_t initCheck() const;
+    virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]);
+    virtual status_t createPlugin(const uint8_t uuid[16], const void* data, size_t size);
+    virtual status_t destroyPlugin();
+    virtual bool requiresSecureDecoderComponent(const char* mime) const;
+    virtual void notifyResolution(uint32_t width, uint32_t height);
+    virtual status_t setMediaDrmSession(const Vector<uint8_t>& sessionId);
+    virtual ssize_t decrypt(const uint8_t key[16], const uint8_t iv[16], CryptoPlugin::Mode mode,
+                            const CryptoPlugin::Pattern& pattern, const ::SharedBuffer& source,
+                            size_t offset, const CryptoPlugin::SubSample* subSamples,
+                            size_t numSubSamples, const ::DestinationBuffer& destination,
+                            AString* errorDetailMsg);
+    virtual int32_t setHeap(const sp<HidlMemory>& heap);
+    virtual void unsetHeap(int32_t seqNum);
+    virtual status_t getLogMessages(Vector<drm::V1_4::LogMessage>& logs) const;
+
+  private:
+    mutable Mutex mLock;
+
+    const std::vector<std::shared_ptr<ICryptoFactoryAidl>> mFactories;
+    std::shared_ptr<ICryptoPluginAidl> mPlugin;
+
+    /**
+     * mInitCheck is:
+     *   NO_INIT if a plugin hasn't been created yet
+     *   ERROR_UNSUPPORTED if a plugin can't be created for the uuid
+     *   OK after a plugin has been created and mPlugin is valid
+     */
+    status_t mInitCheck;
+
+    KeyedVector<int32_t, size_t> mHeapSizes;
+    int32_t mHeapSeqNum;
+
+    std::vector<std::shared_ptr<ICryptoFactoryAidl>> makeCryptoFactories();
+    std::shared_ptr<ICryptoPluginAidl> makeCryptoPlugin(
+            const std::shared_ptr<ICryptoFactoryAidl>& factory, const Uuid& uuidAidl,
+            const std::vector<uint8_t> initData);
+
+    status_t checkSharedBuffer(const ::SharedBuffer& buffer);
+
+    DISALLOW_EVIL_CONSTRUCTORS(CryptoHalAidl);
+};
+
+}  // namespace android
+
+#endif  // CRYPTO_HAL_H_
diff --git a/drm/libmediadrm/include/mediadrm/CryptoHalHidl.h b/drm/libmediadrm/include/mediadrm/CryptoHalHidl.h
new file mode 100644
index 0000000..6db1e89
--- /dev/null
+++ b/drm/libmediadrm/include/mediadrm/CryptoHalHidl.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#ifndef CRYPTO_HAL_HIDL_H_
+#define CRYPTO_HAL_HIDL_H_
+
+#include <android/hardware/drm/1.0/ICryptoFactory.h>
+#include <android/hardware/drm/1.0/ICryptoPlugin.h>
+#include <android/hardware/drm/1.1/ICryptoFactory.h>
+#include <android/hardware/drm/1.2/ICryptoPlugin.h>
+#include <android/hardware/drm/1.4/ICryptoPlugin.h>
+
+#include <mediadrm/ICrypto.h>
+#include <utils/KeyedVector.h>
+#include <utils/threads.h>
+
+namespace drm = ::android::hardware::drm;
+using drm::V1_0::ICryptoFactory;
+using drm::V1_0::ICryptoPlugin;
+using drm::V1_0::SharedBuffer;
+using drm::V1_0::DestinationBuffer;
+
+using ::android::hardware::HidlMemory;
+
+class IMemoryHeap;
+
+namespace android {
+
+struct CryptoHalHidl : public ICrypto {
+    CryptoHalHidl();
+    virtual ~CryptoHalHidl();
+
+    virtual status_t initCheck() const;
+
+    virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]);
+
+    virtual status_t createPlugin(
+            const uint8_t uuid[16], const void *data, size_t size);
+
+    virtual status_t destroyPlugin();
+
+    virtual bool requiresSecureDecoderComponent(
+            const char *mime) const;
+
+    virtual void notifyResolution(uint32_t width, uint32_t height);
+
+    virtual status_t setMediaDrmSession(const Vector<uint8_t> &sessionId);
+
+    virtual ssize_t decrypt(const uint8_t key[16], const uint8_t iv[16],
+            CryptoPlugin::Mode mode, const CryptoPlugin::Pattern &pattern,
+            const ::SharedBuffer &source, size_t offset,
+            const CryptoPlugin::SubSample *subSamples, size_t numSubSamples,
+            const ::DestinationBuffer &destination,
+            AString *errorDetailMsg);
+
+    virtual int32_t setHeap(const sp<HidlMemory>& heap) {
+        return setHeapBase(heap);
+    }
+    virtual void unsetHeap(int32_t seqNum) { clearHeapBase(seqNum); }
+
+    virtual status_t getLogMessages(Vector<drm::V1_4::LogMessage> &logs) const;
+
+private:
+    mutable Mutex mLock;
+
+    const Vector<sp<ICryptoFactory>> mFactories;
+    sp<ICryptoPlugin> mPlugin;
+    sp<drm::V1_2::ICryptoPlugin> mPluginV1_2;
+
+    /**
+     * mInitCheck is:
+     *   NO_INIT if a plugin hasn't been created yet
+     *   ERROR_UNSUPPORTED if a plugin can't be created for the uuid
+     *   OK after a plugin has been created and mPlugin is valid
+     */
+    status_t mInitCheck;
+
+    KeyedVector<int32_t, size_t> mHeapSizes;
+    int32_t mHeapSeqNum;
+
+    Vector<sp<ICryptoFactory>> makeCryptoFactories();
+    sp<ICryptoPlugin> makeCryptoPlugin(const sp<ICryptoFactory>& factory,
+            const uint8_t uuid[16], const void *initData, size_t size);
+
+    int32_t setHeapBase(const sp<HidlMemory>& heap);
+    void clearHeapBase(int32_t seqNum);
+
+    status_t checkSharedBuffer(const ::SharedBuffer& buffer);
+
+    DISALLOW_EVIL_CONSTRUCTORS(CryptoHalHidl);
+};
+
+}  // namespace android
+
+#endif  // CRYPTO_HAL_H_
diff --git a/drm/libmediadrm/include/mediadrm/DrmHal.h b/drm/libmediadrm/include/mediadrm/DrmHal.h
index 7eb1dec..bb58585 100644
--- a/drm/libmediadrm/include/mediadrm/DrmHal.h
+++ b/drm/libmediadrm/include/mediadrm/DrmHal.h
@@ -14,77 +14,27 @@
  * limitations under the License.
  */
 
-#ifndef DRM_HAL_H_
-
-#define DRM_HAL_H_
-
-#include <android/hardware/drm/1.0/IDrmFactory.h>
-#include <android/hardware/drm/1.0/IDrmPlugin.h>
-#include <android/hardware/drm/1.1/IDrmFactory.h>
-#include <android/hardware/drm/1.1/IDrmPlugin.h>
-#include <android/hardware/drm/1.2/IDrmFactory.h>
-#include <android/hardware/drm/1.2/IDrmPlugin.h>
-#include <android/hardware/drm/1.2/IDrmPluginListener.h>
-#include <android/hardware/drm/1.4/IDrmPlugin.h>
-#include <android/hardware/drm/1.4/types.h>
-
-#include <media/drm/DrmAPI.h>
-#include <mediadrm/DrmMetrics.h>
-#include <mediadrm/DrmSessionManager.h>
 #include <mediadrm/IDrm.h>
-#include <mediadrm/IDrmClient.h>
-#include <mediadrm/IDrmMetricsConsumer.h>
-#include <utils/threads.h>
 
-namespace drm = ::android::hardware::drm;
-using drm::V1_0::EventType;
-using drm::V1_0::IDrmFactory;
-using drm::V1_0::IDrmPlugin;
-using drm::V1_0::IDrmPluginListener;
-using drm::V1_1::SecurityLevel;
-using drm::V1_2::KeyStatus;
-using drm::V1_2::OfflineLicenseState;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-
-typedef drm::V1_2::IDrmPluginListener IDrmPluginListener_V1_2;
-typedef drm::V1_0::KeyStatus KeyStatus_V1_0;
+#ifndef DRM_HAL_H_
+#define DRM_HAL_H_
 
 namespace android {
 
-struct DrmSessionClientInterface;
-
-inline bool operator==(const Vector<uint8_t> &l, const Vector<uint8_t> &r) {
-    if (l.size() != r.size()) return false;
-    return memcmp(l.array(), r.array(), l.size()) == 0;
-}
-
-struct DrmHal : public IDrm,
-                public IDrmPluginListener_V1_2 {
-
-    struct DrmSessionClient;
-
+struct DrmHal : public IDrm {
     DrmHal();
     virtual ~DrmHal();
-
     virtual status_t initCheck() const;
-
     virtual status_t isCryptoSchemeSupported(const uint8_t uuid[16],
-                                             const String8& mimeType,
-                                             DrmPlugin::SecurityLevel level,
-                                             bool *isSupported);
-
+                                             const String8 &mimeType,
+                                             DrmPlugin::SecurityLevel securityLevel,
+                                             bool *result);
     virtual status_t createPlugin(const uint8_t uuid[16],
                                   const String8 &appPackageName);
-
     virtual status_t destroyPlugin();
-
-    virtual status_t openSession(DrmPlugin::SecurityLevel level,
+    virtual status_t openSession(DrmPlugin::SecurityLevel securityLevel,
             Vector<uint8_t> &sessionId);
-
     virtual status_t closeSession(Vector<uint8_t> const &sessionId);
-
     virtual status_t
         getKeyRequest(Vector<uint8_t> const &sessionId,
                       Vector<uint8_t> const &initData,
@@ -92,168 +42,88 @@
                       KeyedVector<String8, String8> const &optionalParameters,
                       Vector<uint8_t> &request, String8 &defaultUrl,
                       DrmPlugin::KeyRequestType *keyRequestType);
-
     virtual status_t provideKeyResponse(Vector<uint8_t> const &sessionId,
                                         Vector<uint8_t> const &response,
                                         Vector<uint8_t> &keySetId);
-
     virtual status_t removeKeys(Vector<uint8_t> const &keySetId);
-
     virtual status_t restoreKeys(Vector<uint8_t> const &sessionId,
                                  Vector<uint8_t> const &keySetId);
-
     virtual status_t queryKeyStatus(Vector<uint8_t> const &sessionId,
                                     KeyedVector<String8, String8> &infoMap) const;
-
     virtual status_t getProvisionRequest(String8 const &certType,
                                          String8 const &certAuthority,
                                          Vector<uint8_t> &request,
-                                         String8 &defaulUrl);
-
+                                         String8 &defaultUrl);
     virtual status_t provideProvisionResponse(Vector<uint8_t> const &response,
                                               Vector<uint8_t> &certificate,
                                               Vector<uint8_t> &wrappedKey);
-
     virtual status_t getSecureStops(List<Vector<uint8_t>> &secureStops);
     virtual status_t getSecureStopIds(List<Vector<uint8_t>> &secureStopIds);
     virtual status_t getSecureStop(Vector<uint8_t> const &ssid, Vector<uint8_t> &secureStop);
-
     virtual status_t releaseSecureStops(Vector<uint8_t> const &ssRelease);
     virtual status_t removeSecureStop(Vector<uint8_t> const &ssid);
     virtual status_t removeAllSecureStops();
-
     virtual status_t getHdcpLevels(DrmPlugin::HdcpLevel *connectedLevel,
             DrmPlugin::HdcpLevel *maxLevel) const;
     virtual status_t getNumberOfSessions(uint32_t *currentSessions,
             uint32_t *maxSessions) const;
     virtual status_t getSecurityLevel(Vector<uint8_t> const &sessionId,
             DrmPlugin::SecurityLevel *level) const;
-
     virtual status_t getOfflineLicenseKeySetIds(List<Vector<uint8_t>> &keySetIds) const;
     virtual status_t removeOfflineLicense(Vector<uint8_t> const &keySetId);
     virtual status_t getOfflineLicenseState(Vector<uint8_t> const &keySetId,
             DrmPlugin::OfflineLicenseState *licenseState) const;
-
-    virtual status_t getPropertyString(String8 const &name, String8 &value ) const;
+    virtual status_t getPropertyString(String8 const &name, String8 &value) const;
     virtual status_t getPropertyByteArray(String8 const &name,
-                                          Vector<uint8_t> &value ) const;
-    virtual status_t setPropertyString(String8 const &name, String8 const &value ) const;
+                                          Vector<uint8_t> &value) const;
+    virtual status_t setPropertyString(String8 const &name,
+                                       String8 const &value ) const;
     virtual status_t setPropertyByteArray(String8 const &name,
-                                          Vector<uint8_t> const &value ) const;
+                                          Vector<uint8_t> const &value) const;
     virtual status_t getMetrics(const sp<IDrmMetricsConsumer> &consumer);
-
     virtual status_t setCipherAlgorithm(Vector<uint8_t> const &sessionId,
                                         String8 const &algorithm);
-
     virtual status_t setMacAlgorithm(Vector<uint8_t> const &sessionId,
                                      String8 const &algorithm);
-
     virtual status_t encrypt(Vector<uint8_t> const &sessionId,
                              Vector<uint8_t> const &keyId,
                              Vector<uint8_t> const &input,
                              Vector<uint8_t> const &iv,
                              Vector<uint8_t> &output);
-
     virtual status_t decrypt(Vector<uint8_t> const &sessionId,
                              Vector<uint8_t> const &keyId,
                              Vector<uint8_t> const &input,
                              Vector<uint8_t> const &iv,
                              Vector<uint8_t> &output);
-
     virtual status_t sign(Vector<uint8_t> const &sessionId,
                           Vector<uint8_t> const &keyId,
                           Vector<uint8_t> const &message,
                           Vector<uint8_t> &signature);
-
     virtual status_t verify(Vector<uint8_t> const &sessionId,
                             Vector<uint8_t> const &keyId,
                             Vector<uint8_t> const &message,
                             Vector<uint8_t> const &signature,
                             bool &match);
-
     virtual status_t signRSA(Vector<uint8_t> const &sessionId,
                              String8 const &algorithm,
                              Vector<uint8_t> const &message,
                              Vector<uint8_t> const &wrappedKey,
                              Vector<uint8_t> &signature);
-
     virtual status_t setListener(const sp<IDrmClient>& listener);
-
     virtual status_t requiresSecureDecoder(const char *mime, bool *required) const;
-
     virtual status_t requiresSecureDecoder(const char *mime, DrmPlugin::SecurityLevel securityLevel,
                                            bool *required) const;
-
     virtual status_t setPlaybackId(
             Vector<uint8_t> const &sessionId,
             const char *playbackId);
-
     virtual status_t getLogMessages(Vector<drm::V1_4::LogMessage> &logs) const;
 
-    // Methods of IDrmPluginListener
-    Return<void> sendEvent(EventType eventType,
-            const hidl_vec<uint8_t>& sessionId, const hidl_vec<uint8_t>& data);
-
-    Return<void> sendExpirationUpdate(const hidl_vec<uint8_t>& sessionId,
-            int64_t expiryTimeInMS);
-
-    Return<void> sendKeysChange(const hidl_vec<uint8_t>& sessionId,
-            const hidl_vec<KeyStatus_V1_0>& keyStatusList, bool hasNewUsableKey);
-
-    Return<void> sendKeysChange_1_2(const hidl_vec<uint8_t>& sessionId,
-            const hidl_vec<KeyStatus>& keyStatusList, bool hasNewUsableKey);
-
-    Return<void> sendSessionLostState(const hidl_vec<uint8_t>& sessionId);
-
 private:
-    static Mutex mLock;
-
-    sp<IDrmClient> mListener;
-    mutable Mutex mEventLock;
-    mutable Mutex mNotifyLock;
-
-    const std::vector<sp<IDrmFactory>> mFactories;
-    sp<IDrmPlugin> mPlugin;
-    sp<drm::V1_1::IDrmPlugin> mPluginV1_1;
-    sp<drm::V1_2::IDrmPlugin> mPluginV1_2;
-    sp<drm::V1_4::IDrmPlugin> mPluginV1_4;
-    String8 mAppPackageName;
-
-    // Mutable to allow modification within GetPropertyByteArray.
-    mutable MediaDrmMetrics mMetrics;
-
-    std::vector<std::shared_ptr<DrmSessionClient>> mOpenSessions;
-    void closeOpenSessions();
-    void cleanup();
-
-    /**
-     * mInitCheck is:
-     *   NO_INIT if a plugin hasn't been created yet
-     *   ERROR_UNSUPPORTED if a plugin can't be created for the uuid
-     *   OK after a plugin has been created and mPlugin is valid
-     */
-    status_t mInitCheck;
-
-    std::vector<sp<IDrmFactory>> makeDrmFactories();
-    sp<IDrmPlugin> makeDrmPlugin(const sp<IDrmFactory>& factory,
-            const uint8_t uuid[16], const String8& appPackageName);
-
-    void writeByteArray(Parcel &obj, const hidl_vec<uint8_t>& array);
-
-    std::string reportPluginMetrics() const;
-    std::string reportFrameworkMetrics(const std::string& pluginMetrics) const;
-    status_t getPropertyStringInternal(String8 const &name, String8 &value) const;
-    status_t getPropertyByteArrayInternal(String8 const &name,
-                                          Vector<uint8_t> &value) const;
-    status_t matchMimeTypeAndSecurityLevel(const sp<IDrmFactory> &factory,
-                                           const uint8_t uuid[16],
-                                           const String8 &mimeType,
-                                           DrmPlugin::SecurityLevel level,
-                                           bool *isSupported);
-
+    sp<IDrm> mDrmHalHidl;
+    std::shared_ptr<IDrm> mDrmHalAidl;
     DISALLOW_EVIL_CONSTRUCTORS(DrmHal);
 };
 
-}  // namespace android
+} // namespace android
 
-#endif  // DRM_HAL_H_
+#endif
\ No newline at end of file
diff --git a/drm/libmediadrm/include/mediadrm/DrmHalAidl.h b/drm/libmediadrm/include/mediadrm/DrmHalAidl.h
new file mode 100644
index 0000000..6720734
--- /dev/null
+++ b/drm/libmediadrm/include/mediadrm/DrmHalAidl.h
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#ifndef DRM_HAL_AIDL_H_
+#define DRM_HAL_AIDL_H_
+
+#include <aidl/android/hardware/drm/BnDrmPluginListener.h>
+#include <aidl/android/hardware/drm/IDrmFactory.h>
+#include <aidl/android/hardware/drm/IDrmPlugin.h>
+#include <aidl/android/media/BnResourceManagerClient.h>
+#include <mediadrm/DrmMetrics.h>
+#include <mediadrm/DrmSessionManager.h>
+#include <mediadrm/IDrm.h>
+#include <memory>
+
+using ::aidl::android::hardware::drm::BnDrmPluginListener;
+using IDrmPluginAidl = ::aidl::android::hardware::drm::IDrmPlugin;
+using IDrmFactoryAidl = ::aidl::android::hardware::drm::IDrmFactory;
+using EventTypeAidl = ::aidl::android::hardware::drm::EventType;
+using KeyStatusAidl = ::aidl::android::hardware::drm::KeyStatus;
+using ::aidl::android::hardware::drm::Uuid;
+
+namespace android {
+struct DrmHalAidl : public IDrm,
+                    public BnDrmPluginListener,
+                    std::enable_shared_from_this<BnDrmPluginListener> {
+    struct DrmSessionClient;
+    DrmHalAidl();
+    virtual ~DrmHalAidl();
+    virtual status_t initCheck() const;
+    virtual status_t isCryptoSchemeSupported(const uint8_t uuid[16], const String8& mimeType,
+                                             DrmPlugin::SecurityLevel securityLevel, bool* result);
+    virtual status_t createPlugin(const uint8_t uuid[16], const String8& appPackageName);
+    virtual status_t destroyPlugin();
+    virtual status_t openSession(DrmPlugin::SecurityLevel securityLevel,
+                                 Vector<uint8_t>& sessionId);
+    virtual status_t closeSession(Vector<uint8_t> const& sessionId);
+    virtual status_t getKeyRequest(Vector<uint8_t> const& sessionId,
+                                   Vector<uint8_t> const& initData, String8 const& mimeType,
+                                   DrmPlugin::KeyType keyType,
+                                   KeyedVector<String8, String8> const& optionalParameters,
+                                   Vector<uint8_t>& request, String8& defaultUrl,
+                                   DrmPlugin::KeyRequestType* keyRequestType);
+    virtual status_t provideKeyResponse(Vector<uint8_t> const& sessionId,
+                                        Vector<uint8_t> const& response, Vector<uint8_t>& keySetId);
+    virtual status_t removeKeys(Vector<uint8_t> const& keySetId);
+    virtual status_t restoreKeys(Vector<uint8_t> const& sessionId, Vector<uint8_t> const& keySetId);
+    virtual status_t queryKeyStatus(Vector<uint8_t> const& sessionId,
+                                    KeyedVector<String8, String8>& infoMap) const;
+    virtual status_t getProvisionRequest(String8 const& certType, String8 const& certAuthority,
+                                         Vector<uint8_t>& request, String8& defaultUrl);
+    virtual status_t provideProvisionResponse(Vector<uint8_t> const& response,
+                                              Vector<uint8_t>& certificate,
+                                              Vector<uint8_t>& wrappedKey);
+    virtual status_t getSecureStops(List<Vector<uint8_t>>& secureStops);
+    virtual status_t getSecureStopIds(List<Vector<uint8_t>>& secureStopIds);
+    virtual status_t getSecureStop(Vector<uint8_t> const& ssid, Vector<uint8_t>& secureStop);
+    virtual status_t releaseSecureStops(Vector<uint8_t> const& ssRelease);
+    virtual status_t removeSecureStop(Vector<uint8_t> const& ssid);
+    virtual status_t removeAllSecureStops();
+    virtual status_t getHdcpLevels(DrmPlugin::HdcpLevel* connectedLevel,
+                                   DrmPlugin::HdcpLevel* maxLevel) const;
+    virtual status_t getNumberOfSessions(uint32_t* currentSessions, uint32_t* maxSessions) const;
+    virtual status_t getSecurityLevel(Vector<uint8_t> const& sessionId,
+                                      DrmPlugin::SecurityLevel* level) const;
+    virtual status_t getOfflineLicenseKeySetIds(List<Vector<uint8_t>>& keySetIds) const;
+    virtual status_t removeOfflineLicense(Vector<uint8_t> const& keySetId);
+    virtual status_t getOfflineLicenseState(Vector<uint8_t> const& keySetId,
+                                            DrmPlugin::OfflineLicenseState* licenseState) const;
+    virtual status_t getPropertyString(String8 const& name, String8& value) const;
+    virtual status_t getPropertyByteArray(String8 const& name, Vector<uint8_t>& value) const;
+    virtual status_t setPropertyString(String8 const& name, String8 const& value) const;
+    virtual status_t setPropertyByteArray(String8 const& name, Vector<uint8_t> const& value) const;
+    virtual status_t getMetrics(const sp<IDrmMetricsConsumer>& consumer);
+    virtual status_t setCipherAlgorithm(Vector<uint8_t> const& sessionId, String8 const& algorithm);
+    virtual status_t setMacAlgorithm(Vector<uint8_t> const& sessionId, String8 const& algorithm);
+    virtual status_t encrypt(Vector<uint8_t> const& sessionId, Vector<uint8_t> const& keyId,
+                             Vector<uint8_t> const& input, Vector<uint8_t> const& iv,
+                             Vector<uint8_t>& output);
+    virtual status_t decrypt(Vector<uint8_t> const& sessionId, Vector<uint8_t> const& keyId,
+                             Vector<uint8_t> const& input, Vector<uint8_t> const& iv,
+                             Vector<uint8_t>& output);
+    virtual status_t sign(Vector<uint8_t> const& sessionId, Vector<uint8_t> const& keyId,
+                          Vector<uint8_t> const& message, Vector<uint8_t>& signature);
+    virtual status_t verify(Vector<uint8_t> const& sessionId, Vector<uint8_t> const& keyId,
+                            Vector<uint8_t> const& message, Vector<uint8_t> const& signature,
+                            bool& match);
+    virtual status_t signRSA(Vector<uint8_t> const& sessionId, String8 const& algorithm,
+                             Vector<uint8_t> const& message, Vector<uint8_t> const& wrappedKey,
+                             Vector<uint8_t>& signature);
+    virtual status_t setListener(const sp<IDrmClient>& listener);
+    virtual status_t requiresSecureDecoder(const char* mime, bool* required) const;
+    virtual status_t requiresSecureDecoder(const char* mime, DrmPlugin::SecurityLevel securityLevel,
+                                           bool* required) const;
+    virtual status_t setPlaybackId(Vector<uint8_t> const& sessionId, const char* playbackId);
+    virtual status_t getLogMessages(Vector<drm::V1_4::LogMessage>& logs) const;
+    // Methods of IDrmPluginListenerAidl
+    ::ndk::ScopedAStatus onEvent(EventTypeAidl in_eventType,
+                                 const std::vector<uint8_t>& in_sessionId,
+                                 const std::vector<uint8_t>& in_data);
+    ::ndk::ScopedAStatus onExpirationUpdate(const std::vector<uint8_t>& in_sessionId,
+                                            int64_t in_expiryTimeInMS);
+    ::ndk::ScopedAStatus onKeysChange(const std::vector<uint8_t>& in_sessionId,
+                                      const std::vector<KeyStatusAidl>& in_keyStatusList,
+                                      bool in_hasNewUsableKey);
+    ::ndk::ScopedAStatus onSessionLostState(const std::vector<uint8_t>& in_sessionId);
+
+  private:
+    static Mutex mLock;
+    sp<IDrmClient> mListener;
+    mutable Mutex mEventLock;
+    mutable Mutex mNotifyLock;
+    const std::vector<std::shared_ptr<IDrmFactoryAidl>> mFactories;
+    std::shared_ptr<IDrmPluginAidl> mPlugin;
+    std::vector<std::shared_ptr<IDrmFactoryAidl>> makeDrmFactories();
+    status_t mInitCheck;
+    mutable MediaDrmMetrics mMetrics;
+    std::vector<std::shared_ptr<DrmSessionClient>> mOpenSessions;
+    void cleanup();
+    void closeOpenSessions();
+    std::string reportPluginMetrics() const;
+    std::string reportFrameworkMetrics(const std::string& pluginMetrics) const;
+    status_t getPropertyStringInternal(String8 const& name, String8& value) const;
+    status_t getPropertyByteArrayInternal(String8 const& name, Vector<uint8_t>& value) const;
+    DISALLOW_EVIL_CONSTRUCTORS(DrmHalAidl);
+};
+
+}  // namespace android
+
+#endif
\ No newline at end of file
diff --git a/drm/libmediadrm/include/mediadrm/DrmHalHidl.h b/drm/libmediadrm/include/mediadrm/DrmHalHidl.h
new file mode 100644
index 0000000..91dc700
--- /dev/null
+++ b/drm/libmediadrm/include/mediadrm/DrmHalHidl.h
@@ -0,0 +1,258 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#ifndef DRM_HAL_HIDL_H_
+#define DRM_HAL_HIDL_H_
+
+#include <android/hardware/drm/1.0/IDrmFactory.h>
+#include <android/hardware/drm/1.0/IDrmPlugin.h>
+#include <android/hardware/drm/1.1/IDrmFactory.h>
+#include <android/hardware/drm/1.1/IDrmPlugin.h>
+#include <android/hardware/drm/1.2/IDrmFactory.h>
+#include <android/hardware/drm/1.2/IDrmPlugin.h>
+#include <android/hardware/drm/1.2/IDrmPluginListener.h>
+#include <android/hardware/drm/1.4/IDrmPlugin.h>
+#include <android/hardware/drm/1.4/types.h>
+
+#include <media/drm/DrmAPI.h>
+#include <mediadrm/DrmMetrics.h>
+#include <mediadrm/DrmSessionManager.h>
+#include <mediadrm/IDrm.h>
+#include <mediadrm/IDrmClient.h>
+#include <mediadrm/IDrmMetricsConsumer.h>
+#include <utils/threads.h>
+
+namespace drm = ::android::hardware::drm;
+using drm::V1_0::EventType;
+using drm::V1_0::IDrmFactory;
+using drm::V1_0::IDrmPlugin;
+using drm::V1_0::IDrmPluginListener;
+using drm::V1_1::SecurityLevel;
+using drm::V1_2::KeyStatus;
+using drm::V1_2::OfflineLicenseState;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+typedef drm::V1_2::IDrmPluginListener IDrmPluginListener_V1_2;
+typedef drm::V1_0::KeyStatus KeyStatus_V1_0;
+
+namespace android {
+
+struct DrmSessionClientInterface;
+
+inline bool operator==(const Vector<uint8_t> &l, const Vector<uint8_t> &r) {
+    if (l.size() != r.size()) return false;
+    return memcmp(l.array(), r.array(), l.size()) == 0;
+}
+
+struct DrmHalHidl : public IDrm,
+                public IDrmPluginListener_V1_2 {
+
+    struct DrmSessionClient;
+
+    DrmHalHidl();
+    virtual ~DrmHalHidl();
+
+    virtual status_t initCheck() const;
+
+    virtual status_t isCryptoSchemeSupported(const uint8_t uuid[16],
+                                             const String8& mimeType,
+                                             DrmPlugin::SecurityLevel level,
+                                             bool *isSupported);
+
+    virtual status_t createPlugin(const uint8_t uuid[16],
+                                  const String8 &appPackageName);
+
+    virtual status_t destroyPlugin();
+
+    virtual status_t openSession(DrmPlugin::SecurityLevel level,
+            Vector<uint8_t> &sessionId);
+
+    virtual status_t closeSession(Vector<uint8_t> const &sessionId);
+
+    virtual status_t
+        getKeyRequest(Vector<uint8_t> const &sessionId,
+                      Vector<uint8_t> const &initData,
+                      String8 const &mimeType, DrmPlugin::KeyType keyType,
+                      KeyedVector<String8, String8> const &optionalParameters,
+                      Vector<uint8_t> &request, String8 &defaultUrl,
+                      DrmPlugin::KeyRequestType *keyRequestType);
+
+    virtual status_t provideKeyResponse(Vector<uint8_t> const &sessionId,
+                                        Vector<uint8_t> const &response,
+                                        Vector<uint8_t> &keySetId);
+
+    virtual status_t removeKeys(Vector<uint8_t> const &keySetId);
+
+    virtual status_t restoreKeys(Vector<uint8_t> const &sessionId,
+                                 Vector<uint8_t> const &keySetId);
+
+    virtual status_t queryKeyStatus(Vector<uint8_t> const &sessionId,
+                                    KeyedVector<String8, String8> &infoMap) const;
+
+    virtual status_t getProvisionRequest(String8 const &certType,
+                                         String8 const &certAuthority,
+                                         Vector<uint8_t> &request,
+                                         String8 &defaultUrl);
+
+    virtual status_t provideProvisionResponse(Vector<uint8_t> const &response,
+                                              Vector<uint8_t> &certificate,
+                                              Vector<uint8_t> &wrappedKey);
+
+    virtual status_t getSecureStops(List<Vector<uint8_t>> &secureStops);
+    virtual status_t getSecureStopIds(List<Vector<uint8_t>> &secureStopIds);
+    virtual status_t getSecureStop(Vector<uint8_t> const &ssid, Vector<uint8_t> &secureStop);
+
+    virtual status_t releaseSecureStops(Vector<uint8_t> const &ssRelease);
+    virtual status_t removeSecureStop(Vector<uint8_t> const &ssid);
+    virtual status_t removeAllSecureStops();
+
+    virtual status_t getHdcpLevels(DrmPlugin::HdcpLevel *connectedLevel,
+            DrmPlugin::HdcpLevel *maxLevel) const;
+    virtual status_t getNumberOfSessions(uint32_t *currentSessions,
+            uint32_t *maxSessions) const;
+    virtual status_t getSecurityLevel(Vector<uint8_t> const &sessionId,
+            DrmPlugin::SecurityLevel *level) const;
+
+    virtual status_t getOfflineLicenseKeySetIds(List<Vector<uint8_t>> &keySetIds) const;
+    virtual status_t removeOfflineLicense(Vector<uint8_t> const &keySetId);
+    virtual status_t getOfflineLicenseState(Vector<uint8_t> const &keySetId,
+            DrmPlugin::OfflineLicenseState *licenseState) const;
+
+    virtual status_t getPropertyString(String8 const &name, String8 &value ) const;
+    virtual status_t getPropertyByteArray(String8 const &name,
+                                          Vector<uint8_t> &value ) const;
+    virtual status_t setPropertyString(String8 const &name, String8 const &value ) const;
+    virtual status_t setPropertyByteArray(String8 const &name,
+                                          Vector<uint8_t> const &value ) const;
+    virtual status_t getMetrics(const sp<IDrmMetricsConsumer> &consumer);
+
+    virtual status_t setCipherAlgorithm(Vector<uint8_t> const &sessionId,
+                                        String8 const &algorithm);
+
+    virtual status_t setMacAlgorithm(Vector<uint8_t> const &sessionId,
+                                     String8 const &algorithm);
+
+    virtual status_t encrypt(Vector<uint8_t> const &sessionId,
+                             Vector<uint8_t> const &keyId,
+                             Vector<uint8_t> const &input,
+                             Vector<uint8_t> const &iv,
+                             Vector<uint8_t> &output);
+
+    virtual status_t decrypt(Vector<uint8_t> const &sessionId,
+                             Vector<uint8_t> const &keyId,
+                             Vector<uint8_t> const &input,
+                             Vector<uint8_t> const &iv,
+                             Vector<uint8_t> &output);
+
+    virtual status_t sign(Vector<uint8_t> const &sessionId,
+                          Vector<uint8_t> const &keyId,
+                          Vector<uint8_t> const &message,
+                          Vector<uint8_t> &signature);
+
+    virtual status_t verify(Vector<uint8_t> const &sessionId,
+                            Vector<uint8_t> const &keyId,
+                            Vector<uint8_t> const &message,
+                            Vector<uint8_t> const &signature,
+                            bool &match);
+
+    virtual status_t signRSA(Vector<uint8_t> const &sessionId,
+                             String8 const &algorithm,
+                             Vector<uint8_t> const &message,
+                             Vector<uint8_t> const &wrappedKey,
+                             Vector<uint8_t> &signature);
+
+    virtual status_t setListener(const sp<IDrmClient>& listener);
+
+    virtual status_t requiresSecureDecoder(const char *mime, bool *required) const;
+
+    virtual status_t requiresSecureDecoder(const char *mime, DrmPlugin::SecurityLevel securityLevel,
+                                           bool *required) const;
+
+    virtual status_t setPlaybackId(
+            Vector<uint8_t> const &sessionId,
+            const char *playbackId);
+
+    virtual status_t getLogMessages(Vector<drm::V1_4::LogMessage> &logs) const;
+
+    // Methods of IDrmPluginListener
+    Return<void> sendEvent(EventType eventType,
+            const hidl_vec<uint8_t>& sessionId, const hidl_vec<uint8_t>& data);
+
+    Return<void> sendExpirationUpdate(const hidl_vec<uint8_t>& sessionId,
+            int64_t expiryTimeInMS);
+
+    Return<void> sendKeysChange(const hidl_vec<uint8_t>& sessionId,
+            const hidl_vec<KeyStatus_V1_0>& keyStatusList, bool hasNewUsableKey);
+
+    Return<void> sendKeysChange_1_2(const hidl_vec<uint8_t>& sessionId,
+            const hidl_vec<KeyStatus>& keyStatusList, bool hasNewUsableKey);
+
+    Return<void> sendSessionLostState(const hidl_vec<uint8_t>& sessionId);
+
+private:
+    static Mutex mLock;
+
+    sp<IDrmClient> mListener;
+    mutable Mutex mEventLock;
+    mutable Mutex mNotifyLock;
+
+    const std::vector<sp<IDrmFactory>> mFactories;
+    sp<IDrmPlugin> mPlugin;
+    sp<drm::V1_1::IDrmPlugin> mPluginV1_1;
+    sp<drm::V1_2::IDrmPlugin> mPluginV1_2;
+    sp<drm::V1_4::IDrmPlugin> mPluginV1_4;
+    String8 mAppPackageName;
+
+    // Mutable to allow modification within GetPropertyByteArray.
+    mutable MediaDrmMetrics mMetrics;
+
+    std::vector<std::shared_ptr<DrmSessionClient>> mOpenSessions;
+    void closeOpenSessions();
+    void cleanup();
+
+    /**
+     * mInitCheck is:
+     *   NO_INIT if a plugin hasn't been created yet
+     *   ERROR_UNSUPPORTED if a plugin can't be created for the uuid
+     *   OK after a plugin has been created and mPlugin is valid
+     */
+    status_t mInitCheck;
+
+    std::vector<sp<IDrmFactory>> makeDrmFactories();
+    sp<IDrmPlugin> makeDrmPlugin(const sp<IDrmFactory>& factory,
+            const uint8_t uuid[16], const String8& appPackageName);
+
+    void writeByteArray(Parcel &obj, const hidl_vec<uint8_t>& array);
+
+    std::string reportPluginMetrics() const;
+    std::string reportFrameworkMetrics(const std::string& pluginMetrics) const;
+    status_t getPropertyStringInternal(String8 const &name, String8 &value) const;
+    status_t getPropertyByteArrayInternal(String8 const &name,
+                                          Vector<uint8_t> &value) const;
+    status_t matchMimeTypeAndSecurityLevel(const sp<IDrmFactory> &factory,
+                                           const uint8_t uuid[16],
+                                           const String8 &mimeType,
+                                           DrmPlugin::SecurityLevel level,
+                                           bool *isSupported);
+
+    DISALLOW_EVIL_CONSTRUCTORS(DrmHalHidl);
+};
+
+}  // namespace android
+
+#endif  // DRM_HAL_H_
diff --git a/drm/libmediadrm/include/mediadrm/DrmMetrics.h b/drm/libmediadrm/include/mediadrm/DrmMetrics.h
index 100b8f7..e1775c7 100644
--- a/drm/libmediadrm/include/mediadrm/DrmMetrics.h
+++ b/drm/libmediadrm/include/mediadrm/DrmMetrics.h
@@ -50,12 +50,10 @@
   CounterMetric<status_t> mGetProvisionRequestCounter;
   // Count of provideProvisionResponse calls.
   CounterMetric<status_t> mProvideProvisionResponseCounter;
-
   // Count of key status events broken out by status type.
-  CounterMetric<::android::hardware::drm::V1_2::KeyStatusType>
-      mKeyStatusChangeCounter;
+  CounterMetric<uint32_t> mKeyStatusChangeCounter;
   // Count of events broken out by event type
-  CounterMetric<::android::hardware::drm::V1_0::EventType> mEventCounter;
+  CounterMetric<uint32_t> mEventCounter;
 
   // Count getPropertyByteArray calls to retrieve the device unique id.
   CounterMetric<status_t> mGetDeviceUniqueIdCounter;