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/*
* Copyright 2021 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.extensions.impl.advanced;
import android.annotation.SuppressLint;
/**
* A interface to receive and process the upcoming next available Image.
*
* <p>Implemented by OEM.
*/
@SuppressLint("UnknownNullness")
public interface ImageProcessorImpl {
/**
* The reference count will not be decremented when this method returns. Extensions must
* decrement it when the image is no longer needed.
*
* <p>If OEM is not closing(decrement) the image fast enough, the imageReference passed
* in this method might contain null image meaning that the Image was closed to prevent
* preview from stalling.
*
* @param outputConfigId the id of {@link Camera2OutputConfigImpl} which identifies
* corresponding Surface
* @param timestampNs the timestamp in nanoseconds associated with this image
* @param imageReference A reference to the {@link android.media.Image} which might contain
* null if OEM close(decrement) the image too slowly
* @param physicalCameraId used to distinguish which physical camera id the image comes from
* when the output configuration is
* MultiResolutionImageReaderOutputConfigImpl. It is also set if
* physicalCameraId is set in other Camera2OutputConfigImpl types.
*
*/
void onNextImageAvailable(
int outputConfigId,
long timestampNs,
ImageReferenceImpl imageReference,
String physicalCameraId
);
}
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