1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.support.v4.media.session;
18 
19 import android.media.session.MediaSession;
20 import android.net.Uri;
21 import android.os.Bundle;
22 import android.support.annotation.RequiresApi;
23 import android.util.Log;
24 
25 import java.lang.reflect.InvocationTargetException;
26 import java.lang.reflect.Method;
27 
28 @RequiresApi(24)
29 class MediaSessionCompatApi24 {
30     private static final String TAG = "MediaSessionCompatApi24";
31 
createCallback(Callback callback)32     public static Object createCallback(Callback callback) {
33         return new CallbackProxy<Callback>(callback);
34     }
35 
getCallingPackage(Object sessionObj)36     public static String getCallingPackage(Object sessionObj) {
37         MediaSession session = (MediaSession) sessionObj;
38         try {
39             Method getCallingPackageMethod = session.getClass().getMethod("getCallingPackage");
40             return (String) getCallingPackageMethod.invoke(session);
41         } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) {
42             Log.e(TAG, "Cannot execute MediaSession.getCallingPackage()", e);
43         }
44         return null;
45     }
46 
47     public interface Callback extends MediaSessionCompatApi23.Callback {
onPrepare()48         public void onPrepare();
onPrepareFromMediaId(String mediaId, Bundle extras)49         public void onPrepareFromMediaId(String mediaId, Bundle extras);
onPrepareFromSearch(String query, Bundle extras)50         public void onPrepareFromSearch(String query, Bundle extras);
onPrepareFromUri(Uri uri, Bundle extras)51         public void onPrepareFromUri(Uri uri, Bundle extras);
52     }
53 
54     static class CallbackProxy<T extends Callback>
55             extends MediaSessionCompatApi23.CallbackProxy<T> {
CallbackProxy(T callback)56         public CallbackProxy(T callback) {
57             super(callback);
58         }
59 
60         @Override
onPrepare()61         public void onPrepare() {
62             mCallback.onPrepare();
63         }
64 
65         @Override
onPrepareFromMediaId(String mediaId, Bundle extras)66         public void onPrepareFromMediaId(String mediaId, Bundle extras) {
67             mCallback.onPrepareFromMediaId(mediaId, extras);
68         }
69 
70         @Override
onPrepareFromSearch(String query, Bundle extras)71         public void onPrepareFromSearch(String query, Bundle extras) {
72             mCallback.onPrepareFromSearch(query, extras);
73         }
74 
75         @Override
onPrepareFromUri(Uri uri, Bundle extras)76         public void onPrepareFromUri(Uri uri, Bundle extras) {
77             mCallback.onPrepareFromUri(uri, extras);
78         }
79     }
80 }
81