MediaSessionManagerImplApi28.java

/*
 * 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 androidx.media;

import android.content.Context;

import androidx.annotation.RequiresApi;
import androidx.core.util.ObjectsCompat;

@RequiresApi(28)
class MediaSessionManagerImplApi28 extends MediaSessionManagerImplApi21 {
    android.media.session.MediaSessionManager mObject;

    MediaSessionManagerImplApi28(Context context) {
        super(context);
        mObject = (android.media.session.MediaSessionManager) context
                .getSystemService(Context.MEDIA_SESSION_SERVICE);
    }

    @Override
    public boolean isTrustedForMediaControl(MediaSessionManager.RemoteUserInfoImpl userInfo) {
        // Don't use framework's isTrustedForMediaControl().
        // In P, framework's isTrustedForMediaControl() does the sanity check whether the UID, PID,
        // and package name match. In MediaSession/MediaController, Context#getPackageName() is
        // used by MediaController to tell MediaSession the package name.
        // However, UID, PID and Context#getPackageName() may not match if a activity/service runs
        // on the another app's process by specifying android:process in the AndroidManifest.xml.
        // In that case, sanity check will always fail.
        // Alternative way is to use Context#getOpPackageName() for sending the package name,
        // but it's hidden so we cannot use it.
        return super.isTrustedForMediaControl(userInfo);
    }

    static final class RemoteUserInfoImplApi28 implements MediaSessionManager.RemoteUserInfoImpl {
        final android.media.session.MediaSessionManager.RemoteUserInfo mObject;

        RemoteUserInfoImplApi28(String packageName, int pid, int uid) {
            mObject = new android.media.session.MediaSessionManager.RemoteUserInfo(
                    packageName, pid, uid);
        }

        RemoteUserInfoImplApi28(
                android.media.session.MediaSessionManager.RemoteUserInfo remoteUserInfo) {
            mObject = remoteUserInfo;
        }

        @Override
        public String getPackageName() {
            return mObject.getPackageName();
        }

        @Override
        public int getPid() {
            return mObject.getPid();
        }

        @Override
        public int getUid() {
            return mObject.getUid();
        }

        @Override
        public int hashCode() {
            return ObjectsCompat.hash(mObject);
        }

        @Override
        public boolean equals(Object obj) {
            if (this == obj) {
                return true;
            }
            if (!(obj instanceof RemoteUserInfoImplApi28)) {
                return false;
            }
            RemoteUserInfoImplApi28 other = (RemoteUserInfoImplApi28) obj;
            return mObject.equals(other.mObject);
        }
    }
}