Change PlaybackState#isActiveState to isActive

Rename PlaybackState#isActiveState() to #isActive()
and make it public.
This is according to API review.

This CL also includes STATE_SKIPPING_TO_QUEUE_ITEM
as an active playback state.

Bug: 184612506
Test: build successful && atest PlaybackStateTest

Change-Id: I4757038d63adc3478f19f177265ebd198fb5f424

core/api/current.txt

@@ -25214,6 +25214,7 @@ package android.media.session {
     method public float getPlaybackSpeed();
     method public long getPosition();
     method public int getState();
+    method public boolean isActive();
     method public void writeToParcel(android.os.Parcel, int);
     field public static final long ACTION_FAST_FORWARD = 64L; // 0x40L
     field public static final long ACTION_PAUSE = 2L; // 0x2L

core/api/module-lib-current.txt

@@ -161,10 +161,6 @@ package android.media.session {
     method public void onVolumeChanged(@NonNull android.media.session.MediaSession.Token, int);
   }
 
-  public final class PlaybackState implements android.os.Parcelable {
-    method public boolean isActiveState();
-  }
-
 }
 
 package android.net {

libs/WindowManager/Shell/src/com/android/wm/shell/pip/PipMediaController.java

@@ -216,7 +216,7 @@ public class PipMediaController {
         }
 
         ArrayList<RemoteAction> mediaActions = new ArrayList<>();
-        boolean isPlaying = mMediaController.getPlaybackState().isActiveState();
+        boolean isPlaying = mMediaController.getPlaybackState().isActive();
         long actions = mMediaController.getPlaybackState().getActions();
 
         // Prev action

media/java/android/media/session/PlaybackState.java

@@ -19,7 +19,6 @@ import android.annotation.DrawableRes;
 import android.annotation.IntDef;
 import android.annotation.LongDef;
 import android.annotation.Nullable;
-import android.annotation.SystemApi;
 import android.os.Bundle;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -493,15 +492,26 @@ public final class PlaybackState implements Parcelable {
 
     /**
      * Returns whether this is considered as an active playback state.
-     * @hide
+     * <p>
+     * The playback state is considered as an active if the state is one of the following:
+     * <ul>
+     * <li>{@link #STATE_BUFFERING}</li>
+     * <li>{@link #STATE_CONNECTING}</li>
+     * <li>{@link #STATE_FAST_FORWARDING}</li>
+     * <li>{@link #STATE_PLAYING}</li>
+     * <li>{@link #STATE_REWINDING}</li>
+     * <li>{@link #STATE_SKIPPING_TO_NEXT}</li>
+     * <li>{@link #STATE_SKIPPING_TO_PREVIOUS}</li>
+     * <li>{@link #STATE_SKIPPING_TO_QUEUE_ITEM}</li>
+     * </ul>
      */
-    @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
-    public boolean isActiveState() {
+    public boolean isActive() {
         switch (mState) {
             case PlaybackState.STATE_FAST_FORWARDING:
             case PlaybackState.STATE_REWINDING:
             case PlaybackState.STATE_SKIPPING_TO_PREVIOUS:
             case PlaybackState.STATE_SKIPPING_TO_NEXT:
+            case PlaybackState.STATE_SKIPPING_TO_QUEUE_ITEM:
             case PlaybackState.STATE_BUFFERING:
             case PlaybackState.STATE_CONNECTING:
             case PlaybackState.STATE_PLAYING:

services/core/java/com/android/server/media/MediaSessionRecord.java

@@ -384,7 +384,7 @@ public class MediaSessionRecord implements IBinder.DeathRecipient, MediaSessionR
         if (mPlaybackState == null) {
             return false;
         }
-        return mPlaybackState.isActiveState() == expected;
+        return mPlaybackState.isActive() == expected;
     }
 
     /**