| /* |
| * Copyright (C) 2021 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.hardware.camera2.impl; |
| |
| import static com.android.internal.util.function.pooled.PooledLambda.obtainRunnable; |
| |
| import android.hardware.camera2.CameraInjectionSession; |
| import android.hardware.camera2.ICameraInjectionCallback; |
| import android.hardware.camera2.ICameraInjectionSession; |
| import android.os.Binder; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import java.util.concurrent.Executor; |
| |
| |
| /** |
| * The class inherits CameraInjectionSession. Use CameraManager#injectCamera to instantiate. |
| */ |
| public class CameraInjectionSessionImpl extends CameraInjectionSession |
| implements IBinder.DeathRecipient { |
| private static final String TAG = "CameraInjectionSessionImpl"; |
| |
| private final CameraInjectionCallback mCallback = new CameraInjectionCallback(); |
| private final CameraInjectionSession.InjectionStatusCallback mInjectionStatusCallback; |
| private final Executor mExecutor; |
| private final Object mInterfaceLock = new Object(); |
| private ICameraInjectionSession mInjectionSession; |
| |
| public CameraInjectionSessionImpl(InjectionStatusCallback callback, Executor executor) { |
| mInjectionStatusCallback = callback; |
| mExecutor = executor; |
| } |
| |
| @Override |
| public void close() { |
| synchronized (mInterfaceLock) { |
| try { |
| if (mInjectionSession != null) { |
| mInjectionSession.stopInjection(); |
| mInjectionSession.asBinder().unlinkToDeath(this, /*flags*/0); |
| mInjectionSession = null; |
| } |
| } catch (RemoteException e) { |
| // Ignore binder errors for disconnect |
| } |
| } |
| } |
| |
| @Override |
| protected void finalize() throws Throwable { |
| try { |
| close(); |
| } finally { |
| super.finalize(); |
| } |
| } |
| |
| @Override |
| public void binderDied() { |
| synchronized (mInterfaceLock) { |
| Log.w(TAG, "CameraInjectionSessionImpl died unexpectedly"); |
| |
| if (mInjectionSession == null) { |
| return; // CameraInjectionSession already closed |
| } |
| |
| Runnable r = new Runnable() { |
| @Override |
| public void run() { |
| mInjectionStatusCallback.onInjectionError( |
| CameraInjectionSession.InjectionStatusCallback.ERROR_INJECTION_SERVICE); |
| } |
| }; |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| CameraInjectionSessionImpl.this.mExecutor.execute(r); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| } |
| |
| public CameraInjectionCallback getCallback() { |
| return mCallback; |
| } |
| |
| /** |
| * Set remote injection session, which triggers initial onInjectionSucceeded callbacks. |
| * |
| * <p>This function may post onInjectionError if remoteInjectionSession dies |
| * during injecting.</p> |
| */ |
| public void setRemoteInjectionSession(ICameraInjectionSession injectionSession) { |
| synchronized (mInterfaceLock) { |
| if (injectionSession == null) { |
| Log.e(TAG, "The camera injection session has encountered a serious error"); |
| scheduleNotifyError( |
| CameraInjectionSession.InjectionStatusCallback.ERROR_INJECTION_SESSION); |
| return; |
| } |
| |
| mInjectionSession = injectionSession; |
| |
| IBinder remoteSessionBinder = injectionSession.asBinder(); |
| if (remoteSessionBinder == null) { |
| Log.e(TAG, "The camera injection session has encountered a serious error"); |
| scheduleNotifyError( |
| CameraInjectionSession.InjectionStatusCallback.ERROR_INJECTION_SESSION); |
| return; |
| } |
| |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| remoteSessionBinder.linkToDeath(this, /*flag*/ 0); |
| mExecutor.execute(new Runnable() { |
| @Override |
| public void run() { |
| mInjectionStatusCallback |
| .onInjectionSucceeded(CameraInjectionSessionImpl.this); |
| } |
| }); |
| } catch (RemoteException e) { |
| scheduleNotifyError( |
| CameraInjectionSession.InjectionStatusCallback.ERROR_INJECTION_SESSION); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| } |
| |
| /** |
| * The method called when the injection camera has encountered a serious error. |
| * |
| * @param errorCode The error code. |
| * @see #ERROR_INJECTION_SESSION |
| * @see #ERROR_INJECTION_SERVICE |
| * @see #ERROR_INJECTION_UNSUPPORTED |
| */ |
| public void onInjectionError(final int errorCode) { |
| Log.v(TAG, String.format( |
| "Injection session error received, code %d", errorCode)); |
| |
| synchronized (mInterfaceLock) { |
| if (mInjectionSession == null) { |
| return; // mInjectionSession already closed |
| } |
| |
| switch (errorCode) { |
| case CameraInjectionCallback.ERROR_INJECTION_SESSION: |
| scheduleNotifyError( |
| CameraInjectionSession.InjectionStatusCallback.ERROR_INJECTION_SESSION); |
| break; |
| case CameraInjectionCallback.ERROR_INJECTION_SERVICE: |
| scheduleNotifyError( |
| CameraInjectionSession.InjectionStatusCallback.ERROR_INJECTION_SERVICE); |
| break; |
| case CameraInjectionCallback.ERROR_INJECTION_UNSUPPORTED: |
| scheduleNotifyError( |
| CameraInjectionSession.InjectionStatusCallback |
| .ERROR_INJECTION_UNSUPPORTED); |
| break; |
| default: |
| Log.e(TAG, "Unknown error from injection session: " + errorCode); |
| scheduleNotifyError( |
| CameraInjectionSession.InjectionStatusCallback.ERROR_INJECTION_SERVICE); |
| } |
| } |
| } |
| |
| private void scheduleNotifyError(final int errorCode) { |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| mExecutor.execute(obtainRunnable( |
| CameraInjectionSessionImpl::notifyError, |
| this, errorCode).recycleOnUse()); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| private void notifyError(final int errorCode) { |
| if (mInjectionSession != null) { |
| mInjectionStatusCallback.onInjectionError(errorCode); |
| } |
| } |
| |
| /** |
| * The class inherits ICameraInjectionCallbacks.Stub. Use CameraManager#injectCamera to |
| * instantiate. |
| */ |
| public class CameraInjectionCallback extends ICameraInjectionCallback.Stub { |
| |
| @Override |
| public IBinder asBinder() { |
| return this; |
| } |
| |
| @Override |
| public void onInjectionError(int errorCode) { |
| CameraInjectionSessionImpl.this.onInjectionError(errorCode); |
| } |
| } |
| } |