/*
 * 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;

The total assembled results of a single image capture from the image sensor.
Contains the final configuration for the capture hardware (sensor, lens,
flash), the processing pipeline, the control algorithms, and the output
buffers.
A TotalCaptureResult is produced by a CameraDevice after processing a 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.
All properties returned by CameraCharacteristics.getAvailableCaptureResultKeys() are available (that is CaptureResult.get will return non-null, if and only if that key that was enabled by the request. A few keys such as CaptureResult.STATISTICS_FACES are disabled by default unless enabled with a switch (such as CaptureRequest.STATISTICS_FACE_DETECT_MODE). Refer to each key documentation on a case-by-case basis.
For a logical multi-camera device, if the CaptureRequest contains a surface for an underlying physical camera, the corresponding 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 getPhysicalCameraResults. If all requested surfaces are for the logical camera, no metadata for physical camera will be included.
TotalCaptureResult objects are immutable.
See Also:
onCaptureCompleted.onCaptureCompleted/**
 * <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 CameraDevice.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
Params:
partials – a list of partial results; null will be substituted for an empty list
@hide
/**
     * 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.
For testing only.
@hide
/**
     * 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.
The list is returned is unmodifiable; attempting to modify it will result in a UnsupportedOperationException being thrown.
The list size will be inclusive between 0 and CameraCharacteristics.REQUEST_PARTIAL_RESULT_COUNT, with elements in ascending order of when CaptureCallback.onCaptureProgressed was invoked.
Returns:
unmodifiable list of partial results/**
     * 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.
Returns:
The session ID
@hide
/**
     * 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
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 CameraCharacteristics.getPhysicalCameraIds return a non-empty set of physical devices that are backing the logical camera.
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.
Returns:
unmodifiable map between physical camera ids and their capture result metadata/**
     * 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);
    }
}