1 files changed, 62 insertions, 0 deletions
diff --git a/common/src/com/android/tv/common/support/tis/SimpleSessionManager.java b/common/src/com/android/tv/common/support/tis/SimpleSessionManager.java
new file mode 100644
index 00000000..f0636ccc
--- /dev/null
+++ b/common/src/com/android/tv/common/support/tis/SimpleSessionManager.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 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.support.tis;
+
+import android.media.tv.TvInputService.Session;
+import android.os.Build.VERSION;
+import android.os.Build.VERSION_CODES;
+import android.support.annotation.VisibleForTesting;
+import android.util.ArraySet;
+import com.google.common.collect.ImmutableSet;
+import java.util.HashSet;
+import java.util.Set;
+
+/** A simple session manager that allows a maximum number of concurrent session. */
+public final class SimpleSessionManager implements SessionManager {
+
+    private final Set<Session> sessions;
+    private final int max;
+
+    public SimpleSessionManager(int max) {
+        this.max = max;
+        sessions = VERSION.SDK_INT >= VERSION_CODES.M ? new ArraySet<>() : new HashSet<>();
+    }
+
+    @Override
+    public void removeSession(Session session) {
+        sessions.remove(session);
+    }
+
+    @Override
+    public void addSession(Session session) {
+        sessions.add(session);
+    }
+
+    @Override
+    public boolean canCreateNewSession() {
+        return sessions.size() < max;
+    }
+
+    @Override
+    public ImmutableSet<Session> getSessions() {
+        return ImmutableSet.copyOf(sessions);
+    }
+
+    @VisibleForTesting
+    int getSessionCount() {
+        return sessions.size();
+    }
+}