| /* |
| * Copyright (C) 2006 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.view; |
| |
| /** |
| * An instance of this class represents a connection to the surface |
| * flinger, from which you can create one or more Surface instances that will |
| * be composited to the screen. |
| * {@hide} |
| */ |
| public final class SurfaceSession { |
| // Note: This field is accessed by native code. |
| private long mNativeClient; // SurfaceComposerClient* |
| |
| private static native long nativeCreate(); |
| private static native long nativeCreateScoped(long surfacePtr); |
| private static native void nativeDestroy(long ptr); |
| private static native void nativeKill(long ptr); |
| |
| /** Create a new connection with the surface flinger. */ |
| public SurfaceSession() { |
| mNativeClient = nativeCreate(); |
| } |
| |
| public SurfaceSession(Surface root) { |
| synchronized (root.mLock) { |
| if (root.mNativeObject == 0) { |
| throw new IllegalStateException("Surface is not initialized or has been released"); |
| } |
| mNativeClient = nativeCreateScoped(root.mNativeObject); |
| } |
| } |
| |
| /* no user serviceable parts here ... */ |
| @Override |
| protected void finalize() throws Throwable { |
| try { |
| if (mNativeClient != 0) { |
| nativeDestroy(mNativeClient); |
| } |
| } finally { |
| super.finalize(); |
| } |
| } |
| |
| /** |
| * Forcibly detach native resources associated with this object. |
| * Unlike destroy(), after this call any surfaces that were created |
| * from the session will no longer work. |
| */ |
| public void kill() { |
| nativeKill(mNativeClient); |
| } |
| } |
| |