CameraConfigs.java
/*
* Copyright 2020 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.impl;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
/**
* Utility methods for operating on {@link CameraConfig} instances.
*/
public class CameraConfigs {
private static final CameraConfig EMPTY_CONFIG = new EmptyCameraConfig();
/**
* Gets the empty config instance.
*/
@NonNull
public static CameraConfig emptyConfig() {
return EMPTY_CONFIG;
}
static final class EmptyCameraConfig implements CameraConfig {
private final UseCaseConfigFactory mUseCaseConfigFactory = new UseCaseConfigFactory() {
/**
* Returns the configuration for the given capture type, or <code>null</code> if the
* configuration cannot be produced.
*/
@Nullable
@Override
public Config getConfig(@NonNull CaptureType captureType) {
return null;
}
};
@NonNull
@Override
public UseCaseConfigFactory getUseCaseConfigFactory() {
return mUseCaseConfigFactory;
}
@NonNull
@Override
public Config getConfig() {
return OptionsBundle.emptyBundle();
}
}
private CameraConfigs() {
}
}