Implement async event callout from drm plugin to Java app

Change-Id: I007f147d693664e777b8758be2bb8a4c7ec0236b

3 files changed, 100 insertions, 1 deletions

diff --git a/media/libmedia/Android.mk b/media/libmedia/Android.mk
index 1ada9c3..fbe71ad 100644
--- a/media/libmedia/Android.mk
+++ b/media/libmedia/Android.mk
@@ -20,6 +20,7 @@ LOCAL_SRC_FILES:= \
     IAudioRecord.cpp \
     ICrypto.cpp \
     IDrm.cpp \
+    IDrmClient.cpp \
     IHDCP.cpp \
     AudioRecord.cpp \
     AudioSystem.cpp \
diff --git a/media/libmedia/IDrm.cpp b/media/libmedia/IDrm.cpp
index 1641b56..1578846 100644
--- a/media/libmedia/IDrm.cpp
+++ b/media/libmedia/IDrm.cpp
@@ -51,7 +51,8 @@ enum {
     ENCRYPT,
     DECRYPT,
     SIGN,
-    VERIFY
+    VERIFY,
+    SET_LISTENER
 };
 
 struct BpDrm : public BpInterface<IDrm> {
@@ -384,6 +385,14 @@ struct BpDrm : public BpInterface<IDrm> {
         return reply.readInt32();
     }
 
+    virtual status_t setListener(const sp<IDrmClient>& listener) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+        data.writeStrongBinder(listener->asBinder());
+        remote()->transact(SET_LISTENER, data, &reply);
+        return reply.readInt32();
+    }
+
 private:
     void readVector(Parcel &reply, Vector<uint8_t> &vector) const {
         uint32_t size = reply.readInt32();
@@ -712,6 +721,14 @@ status_t BnDrm::onTransact(
             return OK;
         }
 
+    case SET_LISTENER: {
+        CHECK_INTERFACE(IDrm, data, reply);
+        sp<IDrmClient> listener =
+            interface_cast<IDrmClient>(data.readStrongBinder());
+        reply->writeInt32(setListener(listener));
+        return NO_ERROR;
+    } break;
+
     default:
         return BBinder::onTransact(code, data, reply, flags);
     }
diff --git a/media/libmedia/IDrmClient.cpp b/media/libmedia/IDrmClient.cpp
new file mode 100644
index 0000000..f50715e
--- /dev/null
+++ b/media/libmedia/IDrmClient.cpp
@@ -0,0 +1,81 @@
+/*
+**
+** Copyright 2013, 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_NDEBUG 0
+#define LOG_TAG "IDrmClient"
+#include <utils/Log.h>
+
+#include <utils/RefBase.h>
+#include <binder/IInterface.h>
+#include <binder/Parcel.h>
+
+#include <media/IMediaPlayerClient.h>
+#include <media/IDrmClient.h>
+
+namespace android {
+
+enum {
+    NOTIFY = IBinder::FIRST_CALL_TRANSACTION,
+};
+
+class BpDrmClient: public BpInterface<IDrmClient>
+{
+public:
+    BpDrmClient(const sp<IBinder>& impl)
+        : BpInterface<IDrmClient>(impl)
+    {
+    }
+
+    virtual void notify(DrmPlugin::EventType eventType, int extra, const Parcel *obj)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrmClient::getInterfaceDescriptor());
+        data.writeInt32((int)eventType);
+        data.writeInt32(extra);
+        if (obj && obj->dataSize() > 0) {
+            data.appendFrom(const_cast<Parcel *>(obj), 0, obj->dataSize());
+        }
+        remote()->transact(NOTIFY, data, &reply, IBinder::FLAG_ONEWAY);
+    }
+};
+
+IMPLEMENT_META_INTERFACE(DrmClient, "android.media.IDrmClient");
+
+// ----------------------------------------------------------------------
+
+status_t BnDrmClient::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch (code) {
+        case NOTIFY: {
+            CHECK_INTERFACE(IDrmClient, data, reply);
+            int eventType = data.readInt32();
+            int extra = data.readInt32();
+            Parcel obj;
+            if (data.dataAvail() > 0) {
+                obj.appendFrom(const_cast<Parcel *>(&data), data.dataPosition(), data.dataAvail());
+            }
+
+            notify((DrmPlugin::EventType)eventType, extra, &obj);
+            return NO_ERROR;
+        } break;
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+}; // namespace android