1 /*
2  * Copyright (C) 2006 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.view;
18 
19 /**
20  * An instance of this class represents a connection to the surface
21  * flinger, from which you can create one or more Surface instances that will
22  * be composited to the screen.
23  * {@hide}
24  */
25 public final class SurfaceSession {
26     // Note: This field is accessed by native code.
27     private long mNativeClient; // SurfaceComposerClient*
28 
nativeCreate()29     private static native long nativeCreate();
nativeDestroy(long ptr)30     private static native void nativeDestroy(long ptr);
nativeKill(long ptr)31     private static native void nativeKill(long ptr);
32 
33     /** Create a new connection with the surface flinger. */
SurfaceSession()34     public SurfaceSession() {
35         mNativeClient = nativeCreate();
36     }
37 
38     /* no user serviceable parts here ... */
39     @Override
finalize()40     protected void finalize() throws Throwable {
41         try {
42             if (mNativeClient != 0) {
43                 nativeDestroy(mNativeClient);
44             }
45         } finally {
46             super.finalize();
47         }
48     }
49 
50     /**
51      * Forcibly detach native resources associated with this object.
52      * Unlike destroy(), after this call any surfaces that were created
53      * from the session will no longer work.
54      */
kill()55     public void kill() {
56         nativeKill(mNativeClient);
57     }
58 }
59 
60