1 files changed, 77 insertions, 0 deletions
diff --git a/common/src/com/android/tv/common/compat/TisSessionCompat.java b/common/src/com/android/tv/common/compat/TisSessionCompat.java
new file mode 100644
index 00000000..97f4fb32
--- /dev/null
+++ b/common/src/com/android/tv/common/compat/TisSessionCompat.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2018 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 com.android.tv.common.compat;
+
+import android.content.Context;
+import android.media.tv.TvInputService.Session;
+import android.os.Build.VERSION_CODES;
+import android.os.Bundle;
+import android.support.annotation.RequiresApi;
+import com.android.tv.common.compat.api.SessionCompatCommands;
+import com.android.tv.common.compat.api.SessionCompatEvents;
+import com.android.tv.common.compat.api.SessionEventNotifier;
+import com.android.tv.common.compat.internal.TifSessionCompatProcessor;
+
+/**
+ * TIF Compatibility for {@link Session}.
+ *
+ * <p>Extends {@code Session} in a backwards compatible way.
+ */
+@RequiresApi(api = VERSION_CODES.LOLLIPOP)
+public abstract class TisSessionCompat extends Session
+        implements SessionEventNotifier, SessionCompatCommands, SessionCompatEvents {
+
+    private final TifSessionCompatProcessor mTifCompatProcessor;
+
+    public TisSessionCompat(Context context) {
+        super(context);
+        mTifCompatProcessor = new TifSessionCompatProcessor(this, this);
+    }
+
+    @Override
+    public void onAppPrivateCommand(String action, Bundle data) {
+        if (!mTifCompatProcessor.handleAppPrivateCommand(action, data)) {
+            super.onAppPrivateCommand(action, data);
+        }
+    }
+
+    @Override
+    public void onDevMessage(String message) {}
+
+    @Override
+    public void notifyDevToast(String message) {
+        mTifCompatProcessor.notifyDevToast(message);
+    }
+
+    /**
+     * Notify the application with current signal strength.
+     *
+     * <p>At each {MainActivity#tune(boolean)}, the signal strength is implicitly reset to {@link
+     * TvInputConstantCompat#SIGNAL_STRENGTH_NOT_USED}. If a TV input supports reporting signal
+     * strength, it should set the signal strength to {@link
+     * TvInputConstantCompat#SIGNAL_STRENGTH_UNKNOWN} in
+     * {TunerSessionWorker#prepareTune(TunerChannel, String)}, until a valid strength is available.
+     *
+     * @param value The current signal strength. Valid values are {@link
+     *     TvInputConstantCompat#SIGNAL_STRENGTH_NOT_USED}, {@link
+     *     TvInputConstantCompat#SIGNAL_STRENGTH_UNKNOWN}, and 0 - 100 inclusive.
+     */
+    @Override
+    public void notifySignalStrength(int value) {
+        mTifCompatProcessor.notifySignalStrength(value);
+    }
+}