CaptureCallbackAdapter.java
/*
* Copyright 2019 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 androidx.camera.camera2.internal;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CaptureFailure;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.TotalCaptureResult;
import androidx.annotation.NonNull;
import androidx.camera.core.impl.CameraCaptureCallback;
import androidx.camera.core.impl.CameraCaptureFailure;
import androidx.camera.core.impl.TagBundle;
import androidx.core.util.Preconditions;
/**
* An adapter that passes {@link CameraCaptureSession.CaptureCallback} to {@link
* CameraCaptureCallback}.
*/
final class CaptureCallbackAdapter extends CameraCaptureSession.CaptureCallback {
private final CameraCaptureCallback mCameraCaptureCallback;
CaptureCallbackAdapter(CameraCaptureCallback cameraCaptureCallback) {
if (cameraCaptureCallback == null) {
throw new NullPointerException("cameraCaptureCallback is null");
}
mCameraCaptureCallback = cameraCaptureCallback;
}
@Override
public void onCaptureCompleted(
@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request,
@NonNull TotalCaptureResult result) {
super.onCaptureCompleted(session, request, result);
Object captureRequestTag = request.getTag();
TagBundle tagBundle;
// Inside the CameraX, the CaptureResult's tag should be issued from CameraX, that means
// it will be a TagBundle object.
if (captureRequestTag != null) {
Preconditions.checkArgument(captureRequestTag instanceof TagBundle, "The "
+ "tagBundle object from the CaptureResult is not a TagBundle object.");
tagBundle = (TagBundle) captureRequestTag;
} else {
tagBundle = TagBundle.emptyBundle();
}
mCameraCaptureCallback.onCaptureCompleted(
new Camera2CameraCaptureResult(tagBundle, result));
}
@Override
public void onCaptureFailed(
@NonNull CameraCaptureSession session,
@NonNull CaptureRequest request,
@NonNull CaptureFailure failure) {
super.onCaptureFailed(session, request, failure);
CameraCaptureFailure cameraFailure =
new CameraCaptureFailure(CameraCaptureFailure.Reason.ERROR);
mCameraCaptureCallback.onCaptureFailed(cameraFailure);
}
}