1 files changed, 51 insertions, 0 deletions
diff --git a/android/media/NativeRoutingEventHandlerDelegate.java b/android/media/NativeRoutingEventHandlerDelegate.java
new file mode 100644
index 00000000..9a6baf17
--- /dev/null
+++ b/android/media/NativeRoutingEventHandlerDelegate.java
@@ -0,0 +1,51 @@
+/*
+ * 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.media;
+
+import android.os.Handler;
+
+/**
+ * Helper class {@link AudioTrack}, {@link AudioRecord}, {@link MediaPlayer} and {@link MediaRecorder}
+ * to handle the forwarding of native events to the appropriate listener
+ * (potentially) handled in a different thread.
+ * @hide
+ */
+class NativeRoutingEventHandlerDelegate {
+    private AudioRouting mAudioRouting;
+    private AudioRouting.OnRoutingChangedListener mOnRoutingChangedListener;
+    private Handler mHandler;
+
+    NativeRoutingEventHandlerDelegate(final AudioRouting audioRouting,
+            final AudioRouting.OnRoutingChangedListener listener, Handler handler) {
+        mAudioRouting = audioRouting;
+        mOnRoutingChangedListener = listener;
+        mHandler = handler;
+    }
+
+    void notifyClient() {
+        if (mHandler != null) {
+            mHandler.post(new Runnable() {
+                @Override
+                public void run() {
+                    if (mOnRoutingChangedListener != null) {
+                        mOnRoutingChangedListener.onRoutingChanged(mAudioRouting);
+                    }
+                }
+            });
+        }
+    }
+}