Import Android SDK Platform PI [4335822]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4335822 \
    --target sdk_phone_armv7-win_sdk \
    sdk-repo-linux-sources-4335822.zip

AndroidVersion.ApiLevel has been modified to appear as 28

Change-Id: Ic8f04be005a71c2b9abeaac754d8da8d6f9a2c32

1 files changed, 176 insertions, 0 deletions

diff --git a/android/media/AudioPortEventHandler.java b/android/media/AudioPortEventHandler.java
new file mode 100644
index 00000000..c152245d
--- /dev/null
+++ b/android/media/AudioPortEventHandler.java
@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2014 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;
+import android.os.Looper;
+import android.os.Message;
+import java.util.ArrayList;
+import java.lang.ref.WeakReference;
+
+/**
+ * The AudioPortEventHandler handles AudioManager.OnAudioPortUpdateListener callbacks
+ * posted from JNI
+ * @hide
+ */
+
+class AudioPortEventHandler {
+    private Handler mHandler;
+    private final ArrayList<AudioManager.OnAudioPortUpdateListener> mListeners =
+            new ArrayList<AudioManager.OnAudioPortUpdateListener>();
+
+    private static final String TAG = "AudioPortEventHandler";
+
+    private static final int AUDIOPORT_EVENT_PORT_LIST_UPDATED = 1;
+    private static final int AUDIOPORT_EVENT_PATCH_LIST_UPDATED = 2;
+    private static final int AUDIOPORT_EVENT_SERVICE_DIED = 3;
+    private static final int AUDIOPORT_EVENT_NEW_LISTENER = 4;
+
+    /**
+     * Accessed by native methods: JNI Callback context.
+     */
+    @SuppressWarnings("unused")
+    private long mJniCallback;
+
+    void init() {
+        synchronized (this) {
+            if (mHandler != null) {
+                return;
+            }
+            // find the looper for our new event handler
+            Looper looper = Looper.getMainLooper();
+
+            if (looper != null) {
+                mHandler = new Handler(looper) {
+                    @Override
+                    public void handleMessage(Message msg) {
+                        ArrayList<AudioManager.OnAudioPortUpdateListener> listeners;
+                        synchronized (this) {
+                            if (msg.what == AUDIOPORT_EVENT_NEW_LISTENER) {
+                                listeners = new ArrayList<AudioManager.OnAudioPortUpdateListener>();
+                                if (mListeners.contains(msg.obj)) {
+                                    listeners.add((AudioManager.OnAudioPortUpdateListener)msg.obj);
+                                }
+                            } else {
+                                listeners = mListeners;
+                            }
+                        }
+                        // reset audio port cache if the event corresponds to a change coming
+                        // from audio policy service or if mediaserver process died.
+                        if (msg.what == AUDIOPORT_EVENT_PORT_LIST_UPDATED ||
+                                msg.what == AUDIOPORT_EVENT_PATCH_LIST_UPDATED ||
+                                msg.what == AUDIOPORT_EVENT_SERVICE_DIED) {
+                            AudioManager.resetAudioPortGeneration();
+                        }
+
+                        if (listeners.isEmpty()) {
+                            return;
+                        }
+
+                        ArrayList<AudioPort> ports = new ArrayList<AudioPort>();
+                        ArrayList<AudioPatch> patches = new ArrayList<AudioPatch>();
+                        if (msg.what != AUDIOPORT_EVENT_SERVICE_DIED) {
+                            int status = AudioManager.updateAudioPortCache(ports, patches, null);
+                            if (status != AudioManager.SUCCESS) {
+                                return;
+                            }
+                        }
+
+                        switch (msg.what) {
+                        case AUDIOPORT_EVENT_NEW_LISTENER:
+                        case AUDIOPORT_EVENT_PORT_LIST_UPDATED:
+                            AudioPort[] portList = ports.toArray(new AudioPort[0]);
+                            for (int i = 0; i < listeners.size(); i++) {
+                                listeners.get(i).onAudioPortListUpdate(portList);
+                            }
+                            if (msg.what == AUDIOPORT_EVENT_PORT_LIST_UPDATED) {
+                                break;
+                            }
+                            // FALL THROUGH
+
+                        case AUDIOPORT_EVENT_PATCH_LIST_UPDATED:
+                            AudioPatch[] patchList = patches.toArray(new AudioPatch[0]);
+                            for (int i = 0; i < listeners.size(); i++) {
+                                listeners.get(i).onAudioPatchListUpdate(patchList);
+                            }
+                            break;
+
+                        case AUDIOPORT_EVENT_SERVICE_DIED:
+                            for (int i = 0; i < listeners.size(); i++) {
+                                listeners.get(i).onServiceDied();
+                            }
+                            break;
+
+                        default:
+                            break;
+                        }
+                    }
+                };
+                native_setup(new WeakReference<AudioPortEventHandler>(this));
+            } else {
+                mHandler = null;
+            }
+        }
+    }
+
+    private native void native_setup(Object module_this);
+
+    @Override
+    protected void finalize() {
+        native_finalize();
+    }
+    private native void native_finalize();
+
+    void registerListener(AudioManager.OnAudioPortUpdateListener l) {
+        synchronized (this) {
+            mListeners.add(l);
+        }
+        if (mHandler != null) {
+            Message m = mHandler.obtainMessage(AUDIOPORT_EVENT_NEW_LISTENER, 0, 0, l);
+            mHandler.sendMessage(m);
+        }
+    }
+
+    void unregisterListener(AudioManager.OnAudioPortUpdateListener l) {
+        synchronized (this) {
+            mListeners.remove(l);
+        }
+    }
+
+    Handler handler() {
+        return mHandler;
+    }
+
+    @SuppressWarnings("unused")
+    private static void postEventFromNative(Object module_ref,
+                                            int what, int arg1, int arg2, Object obj) {
+        AudioPortEventHandler eventHandler =
+                (AudioPortEventHandler)((WeakReference)module_ref).get();
+        if (eventHandler == null) {
+            return;
+        }
+
+        if (eventHandler != null) {
+            Handler handler = eventHandler.handler();
+            if (handler != null) {
+                Message m = handler.obtainMessage(what, arg1, arg2, obj);
+                handler.sendMessage(m);
+            }
+        }
+    }
+
+}