cas: add CAS hal
Add CAS hal definitions and default service implementation.
bug: 22804304
Change-Id: I0a89608fe75c5f3c5e6888f9b771305742760707
diff --git a/cas/1.0/IDescramblerBase.hal b/cas/1.0/IDescramblerBase.hal
new file mode 100644
index 0000000..a126084
--- /dev/null
+++ b/cas/1.0/IDescramblerBase.hal
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+package android.hardware.cas@1.0;
+
+import android.hardware.cas@1.0::types;
+
+/**
+ * IDescramblerBase is the API to control the descrambler and is accessible
+ * from both Java and native level.
+ */
+
+interface IDescramblerBase {
+ /**
+ * Associate a MediaCas session with this MediaDescrambler instance.
+ *
+ * @param sessionId the id of the session to associate with this descrambler instance.
+ * @return status the status of the call.
+ */
+ setMediaCasSession(HidlCasSessionId sessionId) generates (Status status);
+
+ /**
+ * Query if the scrambling scheme requires the use of a secure decoder
+ * to decode data of the given mime type.
+ *
+ * @param mime the mime type of the media data.
+ * @return result whether the descrambler requires a secure decoder.
+ */
+ requiresSecureDecoderComponent(string mime) generates (bool result);
+
+ /**
+ * Release the descrambler instance.
+ *
+ * @return status the status of the call.
+ */
+ release() generates (Status status);
+};