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
17package 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 */
25public final class SurfaceSession {
26    // Note: This field is accessed by native code.
27    private long mNativeClient; // SurfaceComposerClient*
28
29    private static native long nativeCreate();
30    private static native void nativeDestroy(long ptr);
31    private static native void nativeKill(long ptr);
32
33    /** Create a new connection with the surface flinger. */
34    public SurfaceSession() {
35        mNativeClient = nativeCreate();
36    }
37
38    /* no user serviceable parts here ... */
39    @Override
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     */
55    public void kill() {
56        nativeKill(mNativeClient);
57    }
58}
59
60