content: /*
   * 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 android.media;
  
  import android.os.Binder;
  import android.os.Bundle;
  import android.os.Parcel;
  import android.os.Parcelable;
  import android.os.RemoteException;
  import android.os.ResultReceiver;
  
  import java.util.Objects;
  
  /**
   * Handles incoming commands from {@link MediaSession2} to both {@link MediaController2}.
   * @hide
   */
  // @SystemApi
  public final class Controller2Link implements Parcelable {
      private static final String TAG = "Controller2Link";
      private static final boolean DEBUG = MediaController2.DEBUG;
  
      public static final @android.annotation.NonNull Parcelable.Creator<Controller2Link> CREATOR =
              new Parcelable.Creator<Controller2Link>() {
                  @Override
                  public Controller2Link createFromParcel(Parcel in) {
                      return new Controller2Link(in);
                  }
  
                  @Override
                  public Controller2Link[] newArray(int size) {
                      return new Controller2Link[size];
                  }
              };
  
  
      private final MediaController2 mController;
      private final IMediaController2 mIController;
  
      public Controller2Link(MediaController2 controller) {
          mController = controller;
          mIController = new Controller2Stub();
      }
  
      Controller2Link(Parcel in) {
          mController = null;
          mIController = IMediaController2.Stub.asInterface(in.readStrongBinder());
      }
  
      @Override
      public int describeContents() {
          return 0;
      }
  
      @Override
      public void writeToParcel(Parcel dest, int flags) {
          dest.writeStrongBinder(mIController.asBinder());
      }
  
      @Override
      public int hashCode() {
          return mIController.asBinder().hashCode();
      }
  
      @Override
      public boolean equals(Object obj) {
          if (!(obj instanceof Controller2Link)) {
              return false;
          }
          Controller2Link other = (Controller2Link) obj;
          return Objects.equals(mIController.asBinder(), other.mIController.asBinder());
      }
  
      /** Interface method for IMediaController2.notifyConnected */
      public void notifyConnected(int seq, Bundle connectionResult) {
          try {
              mIController.notifyConnected(seq, connectionResult);
          } catch (RemoteException e) {
              throw new RuntimeException(e);
          }
      }
  
      /** Interface method for IMediaController2.notifyDisonnected */
      public void notifyDisconnected(int seq) {
          try {
              mIController.notifyDisconnected(seq);
          } catch (RemoteException e) {
              throw new RuntimeException(e);
          }
      }
  
      /** Interface method for IMediaController2.notifyPlaybackActiveChanged */
      public void notifyPlaybackActiveChanged(int seq, boolean playbackActive) {
          try {
              mIController.notifyPlaybackActiveChanged(seq, playbackActive);
          } catch (RemoteException e) {
              throw new RuntimeException(e);
          }
      }
  
      /** Interface method for IMediaController2.sendSessionCommand */
      public void sendSessionCommand(int seq, Session2Command command, Bundle args,
              ResultReceiver resultReceiver) {
          try {
              mIController.sendSessionCommand(seq, command, args, resultReceiver);
          } catch (RemoteException e) {
              throw new RuntimeException(e);
          }
      }
  
      /** Interface method for IMediaController2.cancelSessionCommand */
      public void cancelSessionCommand(int seq) {
          try {
              mIController.cancelSessionCommand(seq);
          } catch (RemoteException e) {
              throw new RuntimeException(e);
          }
      }
  
      /** Stub implementation for IMediaController2.notifyConnected */
      public void onConnected(int seq, Bundle connectionResult) {
          if (connectionResult == null) {
              onDisconnected(seq);
              return;
          }
          mController.onConnected(seq, connectionResult);
      }
  
      /** Stub implementation for IMediaController2.notifyDisonnected */
      public void onDisconnected(int seq) {
          mController.onDisconnected(seq);
      }
  
      /** Stub implementation for IMediaController2.notifyPlaybackActiveChanged */
      public void onPlaybackActiveChanged(int seq, boolean playbackActive) {
          mController.onPlaybackActiveChanged(seq, playbackActive);
      }
  
      /** Stub implementation for IMediaController2.sendSessionCommand */
      public void onSessionCommand(int seq, Session2Command command, Bundle args,
              ResultReceiver resultReceiver) {
          mController.onSessionCommand(seq, command, args, resultReceiver);
      }
  
      /** Stub implementation for IMediaController2.cancelSessionCommand */
      public void onCancelCommand(int seq) {
          mController.onCancelCommand(seq);
      }
  
      private class Controller2Stub extends IMediaController2.Stub {
          @Override
          public void notifyConnected(int seq, Bundle connectionResult) {
              final long token = Binder.clearCallingIdentity();
              try {
                  Controller2Link.this.onConnected(seq, connectionResult);
              } finally {
                  Binder.restoreCallingIdentity(token);
              }
          }
  
          @Override
          public void notifyDisconnected(int seq) {
              final long token = Binder.clearCallingIdentity();
              try {
                  Controller2Link.this.onDisconnected(seq);
              } finally {
                  Binder.restoreCallingIdentity(token);
              }
          }
  
          @Override
          public void notifyPlaybackActiveChanged(int seq, boolean playbackActive) {
              final long token = Binder.clearCallingIdentity();
              try {
                  Controller2Link.this.onPlaybackActiveChanged(seq, playbackActive);
              } finally {
                  Binder.restoreCallingIdentity(token);
              }
          }
  
          @Override
          public void sendSessionCommand(int seq, Session2Command command, Bundle args,
                  ResultReceiver resultReceiver) {
              final long token = Binder.clearCallingIdentity();
              try {
                  Controller2Link.this.onSessionCommand(seq, command, args, resultReceiver);
              } finally {
                  Binder.restoreCallingIdentity(token);
              }
          }
  
          @Override
          public void cancelSessionCommand(int seq) {
              final long token = Binder.clearCallingIdentity();
              try {
                  Controller2Link.this.onCancelCommand(seq);
              } finally {
                  Binder.restoreCallingIdentity(token);
              }
          }
      }
  }
  