CameraIdFilterSet.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.NonNull;
import androidx.annotation.RestrictTo;
import java.util.HashSet;
import java.util.Set;
/**
* A {@link CameraIdFilter} which holds multiple {@link CameraIdFilter} and filters camera ids
* with all of them.
*
* @hide
*/
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
public final class CameraIdFilterSet implements CameraIdFilter {
private Set<CameraIdFilter> mCameraIdFilterSet = new HashSet<>();
@Override
@NonNull
public Set<String> filter(@NonNull Set<String> cameraIds) {
for (CameraIdFilter filter : mCameraIdFilterSet) {
cameraIds = filter.filter(cameraIds);
}
return cameraIds;
}
/** Gets a set of {@link androidx.camera.core.CameraIdFilter}. */
@NonNull
public Set<CameraIdFilter> getCameraIdFilters() {
return mCameraIdFilterSet;
}
/** Adds a {@link androidx.camera.core.CameraIdFilter} to the set. */
public void addCameraIdFilter(@NonNull CameraIdFilter cameraIdFilter) {
if (cameraIdFilter instanceof CameraIdFilterSet) {
// If the additional CameraIdFilter is a CameraIdFilterSet, add all of the single
// CameraIdFilter one by one.
mCameraIdFilterSet.addAll(((CameraIdFilterSet) cameraIdFilter).getCameraIdFilters());
} else {
mCameraIdFilterSet.add(cameraIdFilter);
}
}
}