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/*
* Copyright (C) 2014 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 android.os.Binder;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CaptureFailure;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.CaptureResult;
import android.hardware.camera2.TotalCaptureResult;
import android.view.Surface;
import java.util.concurrent.Executor;
import static com.android.internal.util.Preconditions.*;
/**
* Proxy out invocations to the camera2 API callbacks into a {@link Dispatchable}.
*
* <p>Since abstract classes do not support Java's dynamic {@code Proxy}, we have to
* to use our own proxy mechanism.</p>
*/
public class CallbackProxies {
public static class SessionStateCallbackProxy
extends CameraCaptureSession.StateCallback {
private final Executor mExecutor;
private final CameraCaptureSession.StateCallback mCallback;
public SessionStateCallbackProxy(Executor executor,
CameraCaptureSession.StateCallback callback) {
mExecutor = checkNotNull(executor, "executor must not be null");
mCallback = checkNotNull(callback, "callback must not be null");
}
@Override
public void onConfigured(CameraCaptureSession session) {
final long ident = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onConfigured(session));
} finally {
Binder.restoreCallingIdentity(ident);
}
}
@Override
public void onConfigureFailed(CameraCaptureSession session) {
final long ident = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onConfigureFailed(session));
} finally {
Binder.restoreCallingIdentity(ident);
}
}
@Override
public void onReady(CameraCaptureSession session) {
final long ident = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onReady(session));
} finally {
Binder.restoreCallingIdentity(ident);
}
}
@Override
public void onActive(CameraCaptureSession session) {
final long ident = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onActive(session));
} finally {
Binder.restoreCallingIdentity(ident);
}
}
@Override
public void onCaptureQueueEmpty(CameraCaptureSession session) {
final long ident = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onCaptureQueueEmpty(session));
} finally {
Binder.restoreCallingIdentity(ident);
}
}
@Override
public void onClosed(CameraCaptureSession session) {
final long ident = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onClosed(session));
} finally {
Binder.restoreCallingIdentity(ident);
}
}
@Override
public void onSurfacePrepared(CameraCaptureSession session, Surface surface) {
final long ident = Binder.clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onSurfacePrepared(session, surface));
} finally {
Binder.restoreCallingIdentity(ident);
}
}
}
private CallbackProxies() {
throw new AssertionError();
}
}
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