LensFacingCameraIdFilter.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.impl;
import androidx.annotation.NonNull;
import androidx.camera.core.CameraSelector;
import androidx.camera.core.CameraX;
import java.util.Set;
/**
* A filter selects camera id with specified lens facing from a camera id set.
*/
public class LensFacingCameraIdFilter implements CameraIdFilter {
@CameraSelector.LensFacing
private int mLensFacing;
public LensFacingCameraIdFilter(@CameraSelector.LensFacing int lensFacing) {
mLensFacing = lensFacing;
}
@Override
@NonNull
public Set<String> filter(@NonNull Set<String> cameraIds) {
LensFacingCameraIdFilter lensFacingCameraIdFilter =
CameraX.getCameraFactory().getLensFacingCameraIdFilter(mLensFacing);
return lensFacingCameraIdFilter.filter(cameraIds);
}
/** Returns the lens facing associated with this lens facing camera id filter. */
@CameraSelector.LensFacing
public int getLensFacing() {
return mLensFacing;
}
}