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/*
* Copyright (C) 2014 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 android.hardware.camera2;
import android.annotation.NonNull;
import android.hardware.camera2.impl.CameraMetadataNative;
import android.hardware.camera2.impl.CaptureResultExtras;
import android.hardware.camera2.impl.PhysicalCaptureResultInfo;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* <p>The total assembled results of a single image capture from the image sensor.</p>
*
* <p>Contains the final configuration for the capture hardware (sensor, lens,
* flash), the processing pipeline, the control algorithms, and the output
* buffers.</p>
*
* <p>A {@code TotalCaptureResult} is produced by a {@link CameraDevice} after processing a
* {@link CaptureRequest}. All properties listed for capture requests can also
* be queried on the capture result, to determine the final values used for
* capture. The result also includes additional metadata about the state of the
* camera device during the capture.</p>
*
* <p>All properties returned by {@link CameraCharacteristics#getAvailableCaptureResultKeys()}
* are available (that is {@link CaptureResult#get} will return non-{@code null}, if and only if
* that key that was enabled by the request. A few keys such as
* {@link CaptureResult#STATISTICS_FACES} are disabled by default unless enabled with a switch (such
* as {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE}). Refer to each key documentation on
* a case-by-case basis.</p>
*
* <p>For a logical multi-camera device, if the CaptureRequest contains a surface for an underlying
* physical camera, the corresponding {@link TotalCaptureResult} object will include the metadata
* for that physical camera. And the mapping between the physical camera id and result metadata
* can be accessed via {@link #getPhysicalCameraResults}. If all requested surfaces are for the
* logical camera, no metadata for physical camera will be included.</p>
*
* <p>{@link TotalCaptureResult} objects are immutable.</p>
*
* @see CameraCaptureSession.CaptureCallback#onCaptureCompleted
*/
public final class TotalCaptureResult extends CaptureResult {
private final List<CaptureResult> mPartialResults;
private final int mSessionId;
// The map between physical camera id and capture result
private final HashMap<String, CaptureResult> mPhysicalCaptureResults;
/**
* Takes ownership of the passed-in camera metadata and the partial results
*
* @param partials a list of partial results; {@code null} will be substituted for an empty list
* @hide
*/
public TotalCaptureResult(CameraMetadataNative results, CaptureRequest parent,
CaptureResultExtras extras, List<CaptureResult> partials, int sessionId,
PhysicalCaptureResultInfo physicalResults[]) {
super(results, parent, extras);
if (partials == null) {
mPartialResults = new ArrayList<>();
} else {
mPartialResults = partials;
}
mSessionId = sessionId;
mPhysicalCaptureResults = new HashMap<String, CaptureResult>();
for (PhysicalCaptureResultInfo onePhysicalResult : physicalResults) {
CaptureResult physicalResult = new CaptureResult(
onePhysicalResult.getCameraMetadata(), parent, extras);
mPhysicalCaptureResults.put(onePhysicalResult.getCameraId(),
physicalResult);
}
}
/**
* Creates a request-less result.
*
* <p><strong>For testing only.</strong></p>
* @hide
*/
public TotalCaptureResult(CameraMetadataNative results, int sequenceId) {
super(results, sequenceId);
mPartialResults = new ArrayList<>();
mSessionId = CameraCaptureSession.SESSION_ID_NONE;
mPhysicalCaptureResults = new HashMap<String, CaptureResult>();
}
/**
* Get the read-only list of partial results that compose this total result.
*
* <p>The list is returned is unmodifiable; attempting to modify it will result in a
* {@code UnsupportedOperationException} being thrown.</p>
*
* <p>The list size will be inclusive between {@code 0} and
* {@link CameraCharacteristics#REQUEST_PARTIAL_RESULT_COUNT}, with elements in ascending order
* of when {@link CameraCaptureSession.CaptureCallback#onCaptureProgressed} was invoked.</p>
*
* @return unmodifiable list of partial results
*/
@NonNull
public List<CaptureResult> getPartialResults() {
return Collections.unmodifiableList(mPartialResults);
}
/**
* Get the ID of the session where the capture request of this result was submitted.
*
* @return The session ID
* @hide
*/
public int getSessionId() {
return mSessionId;
}
/**
* Get the map between physical camera ids and their capture result metadata
*
* <p>This function can be called for logical multi-camera devices, which are devices that have
* REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA capability and calls to {@link
* CameraCharacteristics#getPhysicalCameraIds} return a non-empty set of physical devices that
* are backing the logical camera.</p>
*
* <p>If one or more streams from the underlying physical cameras were requested by the
* corresponding capture request, this function returns the result metadata for those physical
* cameras. Otherwise, an empty map is returned.</p>
* @return unmodifiable map between physical camera ids and their capture result metadata
*/
public Map<String, CaptureResult> getPhysicalCameraResults() {
return Collections.unmodifiableMap(mPhysicalCaptureResults);
}
}
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