CaptureBundles.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.core;
import androidx.annotation.RestrictTo;
import androidx.annotation.RestrictTo.Scope;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
/**
* Different implementations of {@link CaptureBundle}.
*
* @hide
*/
@RestrictTo(Scope.LIBRARY_GROUP)
final class CaptureBundles {
/** Creates a {@link CaptureBundle} which contain a single default {@link CaptureStage}. */
static CaptureBundle singleDefaultCaptureBundle() {
return createCaptureBundle(new CaptureStage.DefaultCaptureStage());
}
/** Returns a {@link CaptureBundle} which contains a list of {@link CaptureStage}. */
static CaptureBundle createCaptureBundle(CaptureStage ... captureStages) {
return new CaptureBundleImpl(Arrays.asList(captureStages));
}
/** Returns a {@link CaptureBundle} which contains a list of {@link CaptureStage}. */
static CaptureBundle createCaptureBundle(List<CaptureStage> captureStageList) {
return new CaptureBundleImpl(captureStageList);
}
/**
* An ordered collection of {@link CaptureStage}.
*
* @hide
*/
@RestrictTo(Scope.LIBRARY_GROUP)
static final class CaptureBundleImpl implements CaptureBundle {
final List<CaptureStage> mCaptureStageList;
CaptureBundleImpl(List<CaptureStage> captureStageList) {
if (captureStageList != null && !captureStageList.isEmpty()) {
mCaptureStageList = Collections.unmodifiableList(new ArrayList<>(captureStageList));
} else {
throw new IllegalArgumentException("Cannot set an empty CaptureStage list.");
}
}
@Override
public List<CaptureStage> getCaptureStages() {
return mCaptureStageList;
}
}
private CaptureBundles() {}
}