ResolutionSelectorUtil.java
/*
* Copyright 2023 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.utils;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import androidx.camera.core.resolutionselector.ResolutionSelector;
/**
* Utility class for resolution selector related operations.
*/
@RequiresApi(21) // TODO(b/200306659): Remove and replace with annotation on package-info.java
public class ResolutionSelectorUtil {
private ResolutionSelectorUtil() {
}
/**
* Merges two resolution selectors.
*
* @param baseResolutionSelector the base resolution selector.
* @param resolutionSelectorToOverride the resolution selector that the inside settings can
* override the corresponding setting in the base
* resolution selector.
* @return {@code null} if both the input resolution selectors are null. Otherwise, returns
* the merged resolution selector.
*/
@Nullable
public static ResolutionSelector overrideResolutionSelectors(
@Nullable ResolutionSelector baseResolutionSelector,
@Nullable ResolutionSelector resolutionSelectorToOverride) {
if (resolutionSelectorToOverride == null) {
return baseResolutionSelector;
} else if (baseResolutionSelector == null) {
return resolutionSelectorToOverride;
}
ResolutionSelector.Builder builder =
ResolutionSelector.Builder.fromResolutionSelector(baseResolutionSelector);
if (resolutionSelectorToOverride.getAspectRatioStrategy() != null) {
builder.setAspectRatioStrategy(resolutionSelectorToOverride.getAspectRatioStrategy());
}
if (resolutionSelectorToOverride.getResolutionStrategy() != null) {
builder.setResolutionStrategy(resolutionSelectorToOverride.getResolutionStrategy());
}
if (resolutionSelectorToOverride.getResolutionFilter() != null) {
builder.setResolutionFilter(resolutionSelectorToOverride.getResolutionFilter());
}
if (resolutionSelectorToOverride.getAllowedResolutionMode()
!= ResolutionSelector.PREFER_CAPTURE_RATE_OVER_HIGHER_RESOLUTION) {
builder.setAllowedResolutionMode(
resolutionSelectorToOverride.getAllowedResolutionMode());
}
return builder.build();
}
}