Add Filter linkage and seperate interface

Test: Manual
bug: 135708935
Change-Id: I5782a183936ffca4f345d14c353ad34210f12df7
diff --git a/tv/tuner/1.0/ILnbCallback.hal b/tv/tuner/1.0/ILnbCallback.hal
new file mode 100644
index 0000000..68e9c35
--- /dev/null
+++ b/tv/tuner/1.0/ILnbCallback.hal
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 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.tv.tuner@1.0;
+
+interface ILnbCallback {
+    /**
+     * Notify the client that a new event happened on the Lnb.
+     *
+     * @param LnbEventType the event type.
+     */
+    oneway onEvent(LnbEventType lnbEventType);
+
+    /**
+     * The callback function that must be called by HAL implementation to notify
+     * the client of new DiSEqC message.
+     *
+     * @param diseqcMessage a byte array of data for DiSEqC (Digital Satellite
+     * Equipment Control) message which is specified by EUTELSAT Bus Functional
+     * Specification Version 4.2.
+     */
+    oneway onDiseqcMessage(vec<uint8_t> diseqcMessage);
+};