ImageInfoProcessor.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.annotation.Nullable;
import androidx.camera.core.ImageInfo;
/**
* A processing step that updates the necessary {@link CaptureStage} based on the current
* {@link ImageInfo}.
*/
public interface ImageInfoProcessor {
/**
* Returns the {@link CaptureStage} which should be issued for the processing.
*
* <p> This will be updated whenever {@link #process(ImageInfo)} is called and returns true.
*/
@Nullable
CaptureStage getCaptureStage();
/**
* Processes the metadata from a capture and updates the {@link CaptureStage} used for
* subsequent captures if necessary.
*
* @return if true then the output of {@link #getCaptureStage()} will be updated. This means
* the stream which produced the processed {@link ImageInfo} should be updated to use the new
* CaptureStage.
*/
boolean process(@NonNull ImageInfo imageInfo);
}