Merge "DO NOT MERGE: Remove MediaBrowserServiceImplApi24" into nyc-support-25.4-dev
diff --git a/media-compat/java/android/support/v4/media/MediaBrowserServiceCompat.java b/media-compat/java/android/support/v4/media/MediaBrowserServiceCompat.java
index f78132e..7ff6a20 100644
--- a/media-compat/java/android/support/v4/media/MediaBrowserServiceCompat.java
+++ b/media-compat/java/android/support/v4/media/MediaBrowserServiceCompat.java
@@ -299,9 +299,11 @@
                 rootExtras = new Bundle();
                 rootExtras.putInt(EXTRA_SERVICE_VERSION, SERVICE_VERSION_CURRENT);
                 BundleCompat.putBinder(rootExtras, EXTRA_MESSENGER_BINDER, mMessenger.getBinder());
-                IMediaSession extraBinder = mSession.getExtraBinder();
-                BundleCompat.putBinder(rootExtras, EXTRA_SESSION_BINDER,
-                        extraBinder == null ? null : extraBinder.asBinder());
+                if (mSession != null) {
+                    IMediaSession extraBinder = mSession.getExtraBinder();
+                    BundleCompat.putBinder(rootExtras, EXTRA_SESSION_BINDER,
+                            extraBinder == null ? null : extraBinder.asBinder());
+                }
             }
             BrowserRoot root = MediaBrowserServiceCompat.this.onGetRoot(
                     clientPackageName, clientUid, rootHints);
diff --git a/media-compat/java/android/support/v4/media/session/MediaSessionCompat.java b/media-compat/java/android/support/v4/media/session/MediaSessionCompat.java
index b7581f0..eac0d6d 100644
--- a/media-compat/java/android/support/v4/media/session/MediaSessionCompat.java
+++ b/media-compat/java/android/support/v4/media/session/MediaSessionCompat.java
@@ -713,6 +713,39 @@
         return new MediaSessionCompat(context, new MediaSessionImplApi21(mediaSession));
     }
 
+    private static PlaybackStateCompat getStateWithUpdatedPosition(
+            PlaybackStateCompat state, MediaMetadataCompat metadata) {
+        if (state == null || state.getPosition() == PlaybackStateCompat.PLAYBACK_POSITION_UNKNOWN) {
+            return state;
+        }
+
+        if (state.getState() == PlaybackStateCompat.STATE_PLAYING
+                || state.getState() == PlaybackStateCompat.STATE_FAST_FORWARDING
+                || state.getState() == PlaybackStateCompat.STATE_REWINDING) {
+            long updateTime = state.getLastPositionUpdateTime();
+            if (updateTime > 0) {
+                long currentTime = SystemClock.elapsedRealtime();
+                long position = (long) (state.getPlaybackSpeed() * (currentTime - updateTime))
+                        + state.getPosition();
+                long duration = -1;
+                if (metadata != null && metadata.containsKey(
+                        MediaMetadataCompat.METADATA_KEY_DURATION)) {
+                    duration = metadata.getLong(MediaMetadataCompat.METADATA_KEY_DURATION);
+                }
+
+                if (duration >= 0 && position > duration) {
+                    position = duration;
+                } else if (position < 0) {
+                    position = 0;
+                }
+                return new PlaybackStateCompat.Builder(state)
+                        .setState(state.getState(), position, state.getPlaybackSpeed(), currentTime)
+                        .build();
+            }
+        }
+        return state;
+    }
+
     /**
      * Receives transport controls, media buttons, and commands from controllers
      * and the system. The callback may be set using {@link #setCallback}.
@@ -1987,43 +2020,6 @@
             }
         }
 
-        PlaybackStateCompat getStateWithUpdatedPosition() {
-            PlaybackStateCompat state;
-            long duration = -1;
-            synchronized (mLock) {
-                state = mState;
-                if (mMetadata != null
-                        && mMetadata.containsKey(MediaMetadataCompat.METADATA_KEY_DURATION)) {
-                    duration = mMetadata.getLong(MediaMetadataCompat.METADATA_KEY_DURATION);
-                }
-            }
-
-            PlaybackStateCompat result = null;
-            if (state != null) {
-                if (state.getState() == PlaybackStateCompat.STATE_PLAYING
-                        || state.getState() == PlaybackStateCompat.STATE_FAST_FORWARDING
-                        || state.getState() == PlaybackStateCompat.STATE_REWINDING) {
-                    long updateTime = state.getLastPositionUpdateTime();
-                    long currentTime = SystemClock.elapsedRealtime();
-                    if (updateTime > 0) {
-                        long position = (long) (state.getPlaybackSpeed()
-                                * (currentTime - updateTime)) + state.getPosition();
-                        if (duration >= 0 && position > duration) {
-                            position = duration;
-                        } else if (position < 0) {
-                            position = 0;
-                        }
-                        PlaybackStateCompat.Builder builder = new PlaybackStateCompat.Builder(
-                                state);
-                        builder.setState(state.getState(), position, state.getPlaybackSpeed(),
-                                currentTime);
-                        result = builder.build();
-                    }
-                }
-            }
-            return result == null ? state : result;
-        }
-
         void sendVolumeInfoChanged(ParcelableVolumeInfo info) {
             int size = mControllerCallbacks.beginBroadcast();
             for (int i = size - 1; i >= 0; i--) {
@@ -2368,7 +2364,13 @@
 
             @Override
             public PlaybackStateCompat getPlaybackState() {
-                return getStateWithUpdatedPosition();
+                PlaybackStateCompat state;
+                MediaMetadataCompat metadata;
+                synchronized (mLock) {
+                    state = mState;
+                    metadata = mMetadata;
+                }
+                return getStateWithUpdatedPosition(state, metadata);
             }
 
             @Override
@@ -2683,6 +2685,7 @@
                 new RemoteCallbackList<>();
 
         private PlaybackStateCompat mPlaybackState;
+        private MediaMetadataCompat mMetadata;
         @RatingCompat.Style int mRatingType;
         boolean mCaptioningEnabled;
         @PlaybackStateCompat.RepeatMode int mRepeatMode;
@@ -2780,6 +2783,7 @@
 
         @Override
         public void setMetadata(MediaMetadataCompat metadata) {
+            mMetadata = metadata;
             MediaSessionCompatApi21.setMetadata(mSessionObj,
                     metadata == null ? null : metadata.getMediaMetadata());
         }
@@ -3094,7 +3098,7 @@
 
             @Override
             public PlaybackStateCompat getPlaybackState() {
-                return mPlaybackState;
+                return getStateWithUpdatedPosition(mPlaybackState, mMetadata);
             }
 
             @Override
diff --git a/media-compat/tests/AndroidManifest.xml b/media-compat/tests/AndroidManifest.xml
index e58817a..eda8df2 100644
--- a/media-compat/tests/AndroidManifest.xml
+++ b/media-compat/tests/AndroidManifest.xml
@@ -42,6 +42,11 @@
                 <action android:name="android.media.browse.MediaBrowserService"/>
             </intent-filter>
         </service>
+        <service android:name="android.support.v4.media.StubMediaBrowserServiceCompatWithDelayedMediaSession">
+            <intent-filter>
+                <action android:name="android.media.browse.MediaBrowserService"/>
+            </intent-filter>
+        </service>
     </application>
 
     <instrumentation
diff --git a/media-compat/tests/src/android/support/v4/media/MediaBrowserServiceCompatTest.java b/media-compat/tests/src/android/support/v4/media/MediaBrowserServiceCompatTest.java
index dd4dcd2..8aa5a10 100644
--- a/media-compat/tests/src/android/support/v4/media/MediaBrowserServiceCompatTest.java
+++ b/media-compat/tests/src/android/support/v4/media/MediaBrowserServiceCompatTest.java
@@ -24,6 +24,7 @@
 import static junit.framework.Assert.assertTrue;
 
 import android.content.ComponentName;
+import android.os.Build;
 import android.os.Bundle;
 import android.support.test.filters.LargeTest;
 import android.support.test.filters.SmallTest;
@@ -47,6 +48,11 @@
     private static final ComponentName TEST_BROWSER_SERVICE = new ComponentName(
             "android.support.mediacompat.test",
             "android.support.v4.media.StubMediaBrowserServiceCompat");
+    private static final ComponentName TEST_BROWSER_SERVICE_DELAYED_MEDIA_SESSION =
+            new ComponentName(
+                    "android.support.mediacompat.test",
+                    "android.support.v4.media"
+                            + ".StubMediaBrowserServiceCompatWithDelayedMediaSession");
     private static final String TEST_KEY_1 = "key_1";
     private static final String TEST_VALUE_1 = "value_1";
     private static final String TEST_KEY_2 = "key_2";
@@ -63,6 +69,7 @@
     private final SearchCallback mSearchCallback = new SearchCallback();
 
     private MediaBrowserCompat mMediaBrowser;
+    private MediaBrowserCompat mMediaBrowserForDelayedMediaSession;
     private StubMediaBrowserServiceCompat mMediaBrowserService;
     private Bundle mRootHints;
 
@@ -371,6 +378,35 @@
         assertEquals(val, browserRoot.getExtras().getString(key));
     }
 
+    @Test
+    @SmallTest
+    public void testDelayedSetSessionToken() throws Exception {
+        if (Build.VERSION.SDK_INT == 21) {
+            return;
+        }
+        final ConnectionCallbackForDelayedMediaSession callback =
+                new ConnectionCallbackForDelayedMediaSession();
+
+        getInstrumentation().runOnMainSync(new Runnable() {
+            @Override
+            public void run() {
+                mMediaBrowserForDelayedMediaSession =
+                        new MediaBrowserCompat(getInstrumentation().getTargetContext(),
+                                TEST_BROWSER_SERVICE_DELAYED_MEDIA_SESSION, callback, null);
+            }
+        });
+
+        synchronized (mWaitLock) {
+            mMediaBrowserForDelayedMediaSession.connect();
+            mWaitLock.wait(WAIT_TIME_FOR_NO_RESPONSE_MS);
+            assertEquals(0, callback.mConnectedCount);
+
+            StubMediaBrowserServiceCompatWithDelayedMediaSession.sInstance.callSetSessionToken();
+            mWaitLock.wait(TIME_OUT_MS);
+            assertEquals(1, callback.mConnectedCount);
+        }
+    }
+
     private void assertRootHints(MediaItem item) {
         Bundle rootHints = item.getDescription().getExtras();
         assertNotNull(rootHints);
@@ -527,4 +563,18 @@
             mData = null;
         }
     }
+
+    private class ConnectionCallbackForDelayedMediaSession extends
+            MediaBrowserCompat.ConnectionCallback {
+        private int mConnectedCount = 0;
+
+        @Override
+        public void onConnected() {
+            synchronized (mWaitLock) {
+                mConnectedCount++;
+                mWaitLock.notify();
+            }
+        }
+    };
+
 }
diff --git a/media-compat/tests/src/android/support/v4/media/StubMediaBrowserServiceCompatWithDelayedMediaSession.java b/media-compat/tests/src/android/support/v4/media/StubMediaBrowserServiceCompatWithDelayedMediaSession.java
new file mode 100644
index 0000000..e93c940
--- /dev/null
+++ b/media-compat/tests/src/android/support/v4/media/StubMediaBrowserServiceCompatWithDelayedMediaSession.java
@@ -0,0 +1,62 @@
+/*
+ * 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.support.v4.media;
+
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v4.media.session.MediaSessionCompat;
+
+import java.util.List;
+
+/**
+ * Stub implementation of {@link MediaBrowserServiceCompat}.
+ * This implementation does not call
+ * {@link MediaBrowserServiceCompat#setSessionToken(MediaSessionCompat.Token)} in its
+ * {@link android.app.Service#onCreate}.
+ */
+public class StubMediaBrowserServiceCompatWithDelayedMediaSession extends
+        MediaBrowserServiceCompat {
+
+    static StubMediaBrowserServiceCompatWithDelayedMediaSession sInstance;
+    private MediaSessionCompat mSession;
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        sInstance = this;
+        mSession = new MediaSessionCompat(
+                this, "StubMediaBrowserServiceCompatWithDelayedMediaSession");
+    }
+
+    @Nullable
+    @Override
+    public BrowserRoot onGetRoot(@NonNull String clientPackageName,
+            int clientUid, @Nullable Bundle rootHints) {
+        return new BrowserRoot("StubRootId", null);
+    }
+
+    @Override
+    public void onLoadChildren(@NonNull String parentId,
+            @NonNull Result<List<MediaBrowserCompat.MediaItem>> result) {
+        result.detach();
+    }
+
+    void callSetSessionToken() {
+        setSessionToken(mSession.getSessionToken());
+    }
+}
diff --git a/media-compat/tests/src/android/support/v4/media/session/MediaControllerCompatTest.java b/media-compat/tests/src/android/support/v4/media/session/MediaControllerCompatTest.java
index 5c54510..d72e499 100644
--- a/media-compat/tests/src/android/support/v4/media/session/MediaControllerCompatTest.java
+++ b/media-compat/tests/src/android/support/v4/media/session/MediaControllerCompatTest.java
@@ -24,16 +24,19 @@
 import static org.junit.Assert.fail;
 
 import android.media.AudioManager;
+import android.media.session.MediaController;
+import android.media.session.MediaSession;
+import android.media.session.PlaybackState;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.ResultReceiver;
+import android.os.SystemClock;
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
 import android.support.v4.media.MediaDescriptionCompat;
-import android.support.v4.media.PollingCheck;
 import android.support.v4.media.RatingCompat;
 import android.support.v4.media.VolumeProviderCompat;
 
@@ -55,6 +58,8 @@
     private static final float DELTA = 1e-4f;
     private static final boolean ENABLED = true;
     private static final boolean DISABLED = false;
+    private static final long TEST_POSITION = 1000000L;
+    private static final float TEST_PLAYBACK_SPEED = 3.0f;
 
     private final Object mWaitLock = new Object();
     private Handler mHandler = new Handler(Looper.getMainLooper());
@@ -391,6 +396,40 @@
         assertEquals(currentVolume, info.getCurrentVolume());
     }
 
+    @Test
+    @SmallTest
+    public void testGetPlaybackStateWithPositionUpdate() throws InterruptedException {
+        final long stateSetTime = SystemClock.elapsedRealtime();
+        PlaybackStateCompat stateIn = new PlaybackStateCompat.Builder()
+                .setState(PlaybackStateCompat.STATE_PLAYING, TEST_POSITION, TEST_PLAYBACK_SPEED,
+                        stateSetTime)
+                .build();
+        mSession.setPlaybackState(stateIn);
+
+        final long waitDuration = 100L;
+        Thread.sleep(waitDuration);
+
+        final long expectedUpdateTime = waitDuration + stateSetTime;
+        final long expectedPosition = (long) (TEST_PLAYBACK_SPEED * waitDuration) + TEST_POSITION;
+
+        final double updateTimeTolerance = 30L;
+        final double positionTolerance = updateTimeTolerance * TEST_PLAYBACK_SPEED;
+
+        PlaybackStateCompat stateOut = mSession.getController().getPlaybackState();
+        assertEquals(expectedUpdateTime, stateOut.getLastPositionUpdateTime(), updateTimeTolerance);
+        assertEquals(expectedPosition, stateOut.getPosition(), positionTolerance);
+
+        // Compare the result with MediaController.getPlaybackState().
+        if (Build.VERSION.SDK_INT >= 21) {
+            MediaController controller = new MediaController(
+                    getContext(), (MediaSession.Token) mSession.getSessionToken().getToken());
+            PlaybackState state = controller.getPlaybackState();
+            assertEquals(state.getLastPositionUpdateTime(), stateOut.getLastPositionUpdateTime(),
+                    updateTimeTolerance);
+            assertEquals(state.getPosition(), stateOut.getPosition(), positionTolerance);
+        }
+    }
+
     private class MediaSessionCallback extends MediaSessionCompat.Callback {
         private long mSeekPosition;
         private long mQueueItemId;