https://source.android.com/ 
/*
 * Copyright (C) 2013 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.annotation.Nullable;
import android.hardware.camera2.impl.CameraMetadataNative;
import android.hardware.camera2.impl.PublicKey;
import android.hardware.camera2.impl.SyntheticKey;
import android.hardware.camera2.params.SessionConfiguration;
import android.hardware.camera2.utils.ArrayUtils;
import android.hardware.camera2.utils.TypeReference;
import android.util.Rational;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;


The properties describing a CameraDevice.


These properties are fixed for a given CameraDevice, and can be queried through the CameraManager interface with CameraManager.getCameraCharacteristics.


CameraCharacteristics objects are immutable.


See Also:
/**
 * <p>The properties describing a
 * {@link CameraDevice CameraDevice}.</p>
 *
 * <p>These properties are fixed for a given CameraDevice, and can be queried
 * through the {@link CameraManager CameraManager}
 * interface with {@link CameraManager#getCameraCharacteristics}.</p>
 *
 * <p>{@link CameraCharacteristics} objects are immutable.</p>
 *
 * @see CameraDevice
 * @see CameraManager
 */
public final class CameraCharacteristics extends CameraMetadata<CameraCharacteristics.Key<?>> {

    
A Key is used to do camera characteristics field lookups with CameraCharacteristics.get. 
For example, to get the stream configuration map:

StreamConfigurationMap map = cameraCharacteristics.get(
     CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);





To enumerate over all possible keys for CameraCharacteristics, see CameraCharacteristics.getKeys().


See Also:
/**
     * A {@code Key} is used to do camera characteristics field lookups with
     * {@link CameraCharacteristics#get}.
     *
     * <p>For example, to get the stream configuration map:
     * <code><pre>
     * StreamConfigurationMap map = cameraCharacteristics.get(
     *      CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
     * </pre></code>
     * </p>
     *
     * <p>To enumerate over all possible keys for {@link CameraCharacteristics}, see
     * {@link CameraCharacteristics#getKeys()}.</p>
     *
     * @see CameraCharacteristics#get
     * @see CameraCharacteristics#getKeys()
     */
    public static final class Key<T> {
        private final CameraMetadataNative.Key<T> mKey;

        
Visible for testing and vendor extensions only.

@hide
/**
         * Visible for testing and vendor extensions only.
         *
         * @hide
         */
        public Key(String name, Class<T> type, long vendorId) {
            mKey = new CameraMetadataNative.Key<T>(name,  type, vendorId);
        }

        
Visible for testing and vendor extensions only.

@hide
/**
         * Visible for testing and vendor extensions only.
         *
         * @hide
         */
        public Key(String name, String fallbackName, Class<T> type) {
            mKey = new CameraMetadataNative.Key<T>(name,  fallbackName, type);
        }

        
Visible for testing and vendor extensions only.

@hide
/**
         * Visible for testing and vendor extensions only.
         *
         * @hide
         */
        public Key(String name, Class<T> type) {
            mKey = new CameraMetadataNative.Key<T>(name,  type);
        }

        
Visible for testing and vendor extensions only.

@hide
/**
         * Visible for testing and vendor extensions only.
         *
         * @hide
         */
        public Key(String name, TypeReference<T> typeReference) {
            mKey = new CameraMetadataNative.Key<T>(name,  typeReference);
        }

        
Return a camelCase, period separated name formatted like: "root.section[.subsections].name". 
Built-in keys exposed by the Android SDK are always prefixed with "android."; keys that are device/platform-specific are prefixed with "com.".


For example, CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP would have a name of "android.scaler.streamConfigurationMap"; whereas a device specific key might look like "com.google.nexus.data.private".


Returns:String representation of the key name
/**
         * Return a camelCase, period separated name formatted like:
         * {@code "root.section[.subsections].name"}.
         *
         * <p>Built-in keys exposed by the Android SDK are always prefixed with {@code "android."};
         * keys that are device/platform-specific are prefixed with {@code "com."}.</p>
         *
         * <p>For example, {@code CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP} would
         * have a name of {@code "android.scaler.streamConfigurationMap"}; whereas a device
         * specific key might look like {@code "com.google.nexus.data.private"}.</p>
         *
         * @return String representation of the key name
         */
        @NonNull
        public String getName() {
            return mKey.getName();
        }

        
Return vendor tag id.

@hide
/**
         * Return vendor tag id.
         *
         * @hide
         */
        public long getVendorId() {
            return mKey.getVendorId();
        }

        
{@inheritDoc}

/**
         * {@inheritDoc}
         */
        @Override
        public final int hashCode() {
            return mKey.hashCode();
        }

        
{@inheritDoc}

/**
         * {@inheritDoc}
         */
        @SuppressWarnings("unchecked")
        @Override
        public final boolean equals(Object o) {
            return o instanceof Key && ((Key<T>)o).mKey.equals(mKey);
        }

        
Return this Key as a string representation. 
"CameraCharacteristics.Key(%s)", where %s represents the name of this key as returned by getName.


Returns:string representation of Key
/**
         * Return this {@link Key} as a string representation.
         *
         * <p>{@code "CameraCharacteristics.Key(%s)"}, where {@code %s} represents
         * the name of this key as returned by {@link #getName}.</p>
         *
         * @return string representation of {@link Key}
         */
        @NonNull
        @Override
        public String toString() {
            return String.format("CameraCharacteristics.Key(%s)", mKey.getName());
        }

        
Visible for CameraMetadataNative implementation only; do not use.
TODO: Make this private or remove it altogether.

@hide
/**
         * Visible for CameraMetadataNative implementation only; do not use.
         *
         * TODO: Make this private or remove it altogether.
         *
         * @hide
         */
        public CameraMetadataNative.Key<T> getNativeKey() {
            return mKey;
        }

        @SuppressWarnings({
                "unused", "unchecked"
        })
        private Key(CameraMetadataNative.Key<?> nativeKey) {
            mKey = (CameraMetadataNative.Key<T>) nativeKey;
        }
    }

    private final CameraMetadataNative mProperties;
    private List<CameraCharacteristics.Key<?>> mKeys;
    private List<CaptureRequest.Key<?>> mAvailableRequestKeys;
    private List<CaptureRequest.Key<?>> mAvailableSessionKeys;
    private List<CaptureRequest.Key<?>> mAvailablePhysicalRequestKeys;
    private List<CaptureResult.Key<?>> mAvailableResultKeys;

    
Takes ownership of the passed-in properties object

@hide
/**
     * Takes ownership of the passed-in properties object
     * @hide
     */
    public CameraCharacteristics(CameraMetadataNative properties) {
        mProperties = CameraMetadataNative.move(properties);
        setNativeInstance(mProperties);
    }

    
Returns a copy of the underlying CameraMetadataNative. 
@hide
/**
     * Returns a copy of the underlying {@link CameraMetadataNative}.
     * @hide
     */
    public CameraMetadataNative getNativeCopy() {
        return new CameraMetadataNative(mProperties);
    }

    
Get a camera characteristics field value.

The field definitions can be found in CameraCharacteristics.


Querying the value for the same key more than once will return a value
which is equal to the previous queried value.


Params:
  • key – The characteristics field to read.
Throws:
Returns:The value of that key, or null if the field is not set.
/**
     * Get a camera characteristics field value.
     *
     * <p>The field definitions can be
     * found in {@link CameraCharacteristics}.</p>
     *
     * <p>Querying the value for the same key more than once will return a value
     * which is equal to the previous queried value.</p>
     *
     * @throws IllegalArgumentException if the key was not valid
     *
     * @param key The characteristics field to read.
     * @return The value of that key, or {@code null} if the field is not set.
     */
    @Nullable
    public <T> T get(Key<T> key) {
        return mProperties.get(key);
    }

    
{@inheritDoc}

@hide
/**
     * {@inheritDoc}
     * @hide
     */
    @SuppressWarnings("unchecked")
    @Override
    protected <T> T getProtected(Key<?> key) {
        return (T) mProperties.get(key);
    }

    
{@inheritDoc}

@hide
/**
     * {@inheritDoc}
     * @hide
     */
    @SuppressWarnings("unchecked")
    @Override
    protected Class<Key<?>> getKeyClass() {
        Object thisClass = Key.class;
        return (Class<Key<?>>)thisClass;
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @NonNull
    @Override
    public List<Key<?>> getKeys() {
        // List of keys is immutable; cache the results after we calculate them
        if (mKeys != null) {
            return mKeys;
        }

        int[] filterTags = get(REQUEST_AVAILABLE_CHARACTERISTICS_KEYS);
        if (filterTags == null) {
            throw new AssertionError("android.request.availableCharacteristicsKeys must be non-null"
                    + " in the characteristics");
        }

        mKeys = Collections.unmodifiableList(
                getKeys(getClass(), getKeyClass(), this, filterTags));
        return mKeys;
    }

    
Returns a subset of getAvailableCaptureRequestKeys keys that the camera device can pass as part of the capture session initialization.


This list includes keys that are difficult to apply per-frame and can result in unexpected delays when modified during the capture session lifetime. Typical examples include parameters that require a time-consuming hardware re-configuration or internal camera pipeline change. For performance reasons we suggest clients to pass their initial values as part of SessionConfiguration.setSessionParameters. Once the camera capture session is enabled it is also recommended to avoid changing them from their initial values set in SessionConfiguration.setSessionParameters. Control over session parameters can still be exerted in capture requests but clients should be aware and expect delays during their application. An example usage scenario could look like this:


    

  • The camera client starts by quering the session parameter key list via getAvailableSessionKeys.
    • 

  • Before triggering the capture session create sequence, a capture request must be built via CameraDevice.createCaptureRequest using an appropriate template matching the particular use case.
    • 

  • The client should go over the list of session parameters and check
  whether some of the keys listed matches with the parameters that
  they intend to modify as part of the first capture request.
    • 

  • If there is no such match, the capture request can be passed unmodified to SessionConfiguration.setSessionParameters.
    • 

  • If matches do exist, the client should update the respective values and pass the request to SessionConfiguration.setSessionParameters.
    • 

  • After the capture session initialization completes the session parameter
  key list can continue to serve as reference when posting or updating
  further requests. As mentioned above further changes to session
  parameters should ideally be avoided, if updates are necessary
  however clients could expect a delay/glitch during the
  parameter switch.
    • 



The list returned is not modifiable, so any attempts to modify it will throw a UnsupportedOperationException.


Each key is only listed once in the list. The order of the keys is undefined.


Returns:List of keys that can be passed during capture session initialization. In case the
camera device doesn't support such keys the list can be null.
/**
     * <p>Returns a subset of {@link #getAvailableCaptureRequestKeys} keys that the
     * camera device can pass as part of the capture session initialization.</p>
     *
     * <p>This list includes keys that are difficult to apply per-frame and
     * can result in unexpected delays when modified during the capture session
     * lifetime. Typical examples include parameters that require a
     * time-consuming hardware re-configuration or internal camera pipeline
     * change. For performance reasons we suggest clients to pass their initial
     * values as part of {@link SessionConfiguration#setSessionParameters}. Once
     * the camera capture session is enabled it is also recommended to avoid
     * changing them from their initial values set in
     * {@link SessionConfiguration#setSessionParameters }.
     * Control over session parameters can still be exerted in capture requests
     * but clients should be aware and expect delays during their application.
     * An example usage scenario could look like this:</p>
     * <ul>
     * <li>The camera client starts by quering the session parameter key list via
     *   {@link android.hardware.camera2.CameraCharacteristics#getAvailableSessionKeys }.</li>
     * <li>Before triggering the capture session create sequence, a capture request
     *   must be built via {@link CameraDevice#createCaptureRequest } using an
     *   appropriate template matching the particular use case.</li>
     * <li>The client should go over the list of session parameters and check
     *   whether some of the keys listed matches with the parameters that
     *   they intend to modify as part of the first capture request.</li>
     * <li>If there is no such match, the capture request can be  passed
     *   unmodified to {@link SessionConfiguration#setSessionParameters }.</li>
     * <li>If matches do exist, the client should update the respective values
     *   and pass the request to {@link SessionConfiguration#setSessionParameters }.</li>
     * <li>After the capture session initialization completes the session parameter
     *   key list can continue to serve as reference when posting or updating
     *   further requests. As mentioned above further changes to session
     *   parameters should ideally be avoided, if updates are necessary
     *   however clients could expect a delay/glitch during the
     *   parameter switch.</li>
     * </ul>
     *
     * <p>The list returned is not modifiable, so any attempts to modify it will throw
     * a {@code UnsupportedOperationException}.</p>
     *
     * <p>Each key is only listed once in the list. The order of the keys is undefined.</p>
     *
     * @return List of keys that can be passed during capture session initialization. In case the
     * camera device doesn't support such keys the list can be null.
     */
    @SuppressWarnings({"unchecked"})
    public List<CaptureRequest.Key<?>> getAvailableSessionKeys() {
        if (mAvailableSessionKeys == null) {
            Object crKey = CaptureRequest.Key.class;
            Class<CaptureRequest.Key<?>> crKeyTyped = (Class<CaptureRequest.Key<?>>)crKey;

            int[] filterTags = get(REQUEST_AVAILABLE_SESSION_KEYS);
            if (filterTags == null) {
                return null;
            }
            mAvailableSessionKeys =
                    getAvailableKeyList(CaptureRequest.class, crKeyTyped, filterTags);
        }
        return mAvailableSessionKeys;
    }

    
Returns a subset of getAvailableCaptureRequestKeys keys that can be overridden for physical devices backing a logical multi-camera.


This is a subset of android.request.availableRequestKeys which contains a list of keys that can be overridden using Builder.setPhysicalCameraKey. The respective value of such request key can be obtained by calling Builder.getPhysicalCameraKey. Capture requests that contain individual physical device requests must be built via CameraDevice.createCaptureRequest(int, Set<String>). Such extended capture requests can be passed only to CameraCaptureSession.capture or CameraCaptureSession.captureBurst and not to CameraCaptureSession.setRepeatingRequest or CameraCaptureSession.setRepeatingBurst.


The list returned is not modifiable, so any attempts to modify it will throw a UnsupportedOperationException.


Each key is only listed once in the list. The order of the keys is undefined.


Returns:List of keys that can be overridden in individual physical device requests.
In case the camera device doesn't support such keys the list can be null.
/**
     * <p>Returns a subset of {@link #getAvailableCaptureRequestKeys} keys that can
     * be overridden for physical devices backing a logical multi-camera.</p>
     *
     * <p>This is a subset of android.request.availableRequestKeys which contains a list
     * of keys that can be overridden using {@link CaptureRequest.Builder#setPhysicalCameraKey }.
     * The respective value of such request key can be obtained by calling
     * {@link CaptureRequest.Builder#getPhysicalCameraKey }. Capture requests that contain
     * individual physical device requests must be built via
     * {@link android.hardware.camera2.CameraDevice#createCaptureRequest(int, Set)}.
     * Such extended capture requests can be passed only to
     * {@link CameraCaptureSession#capture } or {@link CameraCaptureSession#captureBurst } and
     * not to {@link CameraCaptureSession#setRepeatingRequest } or
     * {@link CameraCaptureSession#setRepeatingBurst }.</p>
     *
     * <p>The list returned is not modifiable, so any attempts to modify it will throw
     * a {@code UnsupportedOperationException}.</p>
     *
     * <p>Each key is only listed once in the list. The order of the keys is undefined.</p>
     *
     * @return List of keys that can be overridden in individual physical device requests.
     * In case the camera device doesn't support such keys the list can be null.
     */
    @SuppressWarnings({"unchecked"})
    public List<CaptureRequest.Key<?>> getAvailablePhysicalCameraRequestKeys() {
        if (mAvailablePhysicalRequestKeys == null) {
            Object crKey = CaptureRequest.Key.class;
            Class<CaptureRequest.Key<?>> crKeyTyped = (Class<CaptureRequest.Key<?>>)crKey;

            int[] filterTags = get(REQUEST_AVAILABLE_PHYSICAL_CAMERA_REQUEST_KEYS);
            if (filterTags == null) {
                return null;
            }
            mAvailablePhysicalRequestKeys =
                    getAvailableKeyList(CaptureRequest.class, crKeyTyped, filterTags);
        }
        return mAvailablePhysicalRequestKeys;
    }

    
Returns the list of keys supported by this CameraDevice for querying with a CaptureRequest. 
The list returned is not modifiable, so any attempts to modify it will throw a UnsupportedOperationException.


Each key is only listed once in the list. The order of the keys is undefined.


Note that there is no getAvailableCameraCharacteristicsKeys() -- use getKeys() instead.


Returns:List of keys supported by this CameraDevice for CaptureRequests.
/**
     * Returns the list of keys supported by this {@link CameraDevice} for querying
     * with a {@link CaptureRequest}.
     *
     * <p>The list returned is not modifiable, so any attempts to modify it will throw
     * a {@code UnsupportedOperationException}.</p>
     *
     * <p>Each key is only listed once in the list. The order of the keys is undefined.</p>
     *
     * <p>Note that there is no {@code getAvailableCameraCharacteristicsKeys()} -- use
     * {@link #getKeys()} instead.</p>
     *
     * @return List of keys supported by this CameraDevice for CaptureRequests.
     */
    @SuppressWarnings({"unchecked"})
    @NonNull
    public List<CaptureRequest.Key<?>> getAvailableCaptureRequestKeys() {
        if (mAvailableRequestKeys == null) {
            Object crKey = CaptureRequest.Key.class;
            Class<CaptureRequest.Key<?>> crKeyTyped = (Class<CaptureRequest.Key<?>>)crKey;

            int[] filterTags = get(REQUEST_AVAILABLE_REQUEST_KEYS);
            if (filterTags == null) {
                throw new AssertionError("android.request.availableRequestKeys must be non-null "
                        + "in the characteristics");
            }
            mAvailableRequestKeys =
                    getAvailableKeyList(CaptureRequest.class, crKeyTyped, filterTags);
        }
        return mAvailableRequestKeys;
    }

    
Returns the list of keys supported by this CameraDevice for querying with a CaptureResult. 
The list returned is not modifiable, so any attempts to modify it will throw a UnsupportedOperationException.


Each key is only listed once in the list. The order of the keys is undefined.


Note that there is no getAvailableCameraCharacteristicsKeys() -- use getKeys() instead.


Returns:List of keys supported by this CameraDevice for CaptureResults.
/**
     * Returns the list of keys supported by this {@link CameraDevice} for querying
     * with a {@link CaptureResult}.
     *
     * <p>The list returned is not modifiable, so any attempts to modify it will throw
     * a {@code UnsupportedOperationException}.</p>
     *
     * <p>Each key is only listed once in the list. The order of the keys is undefined.</p>
     *
     * <p>Note that there is no {@code getAvailableCameraCharacteristicsKeys()} -- use
     * {@link #getKeys()} instead.</p>
     *
     * @return List of keys supported by this CameraDevice for CaptureResults.
     */
    @SuppressWarnings({"unchecked"})
    @NonNull
    public List<CaptureResult.Key<?>> getAvailableCaptureResultKeys() {
        if (mAvailableResultKeys == null) {
            Object crKey = CaptureResult.Key.class;
            Class<CaptureResult.Key<?>> crKeyTyped = (Class<CaptureResult.Key<?>>)crKey;

            int[] filterTags = get(REQUEST_AVAILABLE_RESULT_KEYS);
            if (filterTags == null) {
                throw new AssertionError("android.request.availableResultKeys must be non-null "
                        + "in the characteristics");
            }
            mAvailableResultKeys = getAvailableKeyList(CaptureResult.class, crKeyTyped, filterTags);
        }
        return mAvailableResultKeys;
    }

    
Returns the list of keys supported by this CameraDevice by metadataClass. 
The list returned is not modifiable, so any attempts to modify it will throw a UnsupportedOperationException.


Each key is only listed once in the list. The order of the keys is undefined.


Params:
  • metadataClass – The subclass of CameraMetadata that you want to get the keys for.
  • keyClass – The class of the metadata key, e.g. CaptureRequest.Key.class
Throws:
Returns:List of keys supported by this CameraDevice for metadataClass.
/**
     * Returns the list of keys supported by this {@link CameraDevice} by metadataClass.
     *
     * <p>The list returned is not modifiable, so any attempts to modify it will throw
     * a {@code UnsupportedOperationException}.</p>
     *
     * <p>Each key is only listed once in the list. The order of the keys is undefined.</p>
     *
     * @param metadataClass The subclass of CameraMetadata that you want to get the keys for.
     * @param keyClass The class of the metadata key, e.g. CaptureRequest.Key.class
     *
     * @return List of keys supported by this CameraDevice for metadataClass.
     *
     * @throws IllegalArgumentException if metadataClass is not a subclass of CameraMetadata
     */
    private <TKey> List<TKey>
    getAvailableKeyList(Class<?> metadataClass, Class<TKey> keyClass, int[] filterTags) {

        if (metadataClass.equals(CameraMetadata.class)) {
            throw new AssertionError(
                    "metadataClass must be a strict subclass of CameraMetadata");
        } else if (!CameraMetadata.class.isAssignableFrom(metadataClass)) {
            throw new AssertionError(
                    "metadataClass must be a subclass of CameraMetadata");
        }

        List<TKey> staticKeyList = getKeys(
                metadataClass, keyClass, /*instance*/null, filterTags);
        return Collections.unmodifiableList(staticKeyList);
    }

    
Returns the set of physical camera ids that this logical CameraDevice is made up of. 
A camera device is a logical camera if it has
REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA capability. If the camera device
doesn't have the capability, the return value will be an empty set. 


The set returned is not modifiable, so any attempts to modify it will throw a UnsupportedOperationException.


Returns:Set of physical camera ids for this logical camera device.
/**
     * Returns the set of physical camera ids that this logical {@link CameraDevice} is
     * made up of.
     *
     * <p>A camera device is a logical camera if it has
     * REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA capability. If the camera device
     * doesn't have the capability, the return value will be an empty set. </p>
     *
     * <p>The set returned is not modifiable, so any attempts to modify it will throw
     * a {@code UnsupportedOperationException}.</p>
     *
     * @return Set of physical camera ids for this logical camera device.
     */
    @NonNull
    public Set<String> getPhysicalCameraIds() {
        int[] availableCapabilities = get(REQUEST_AVAILABLE_CAPABILITIES);
        if (availableCapabilities == null) {
            throw new AssertionError("android.request.availableCapabilities must be non-null "
                        + "in the characteristics");
        }

        if (!ArrayUtils.contains(availableCapabilities,
                REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA)) {
            return Collections.emptySet();
        }
        byte[] physicalCamIds = get(LOGICAL_MULTI_CAMERA_PHYSICAL_IDS);

        String physicalCamIdString = null;
        try {
            physicalCamIdString = new String(physicalCamIds, "UTF-8");
        } catch (java.io.UnsupportedEncodingException e) {
            throw new AssertionError("android.logicalCam.physicalIds must be UTF-8 string");
        }
        String[] physicalCameraIdArray = physicalCamIdString.split("\0");

        return Collections.unmodifiableSet(new HashSet<String>(Arrays.asList(physicalCameraIdArray)));
    }

    /*@O~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
     * The key entries below this point are generated from metadata
     * definitions in /system/media/camera/docs. Do not modify by hand or
     * modify the comment blocks at the start or end.
     *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~*/

    
List of aberration correction modes for android.colorCorrection.aberrationMode that are supported by this camera device.


This key lists the valid modes for android.colorCorrection.aberrationMode. If no aberration correction modes are available for a device, this list will solely include OFF mode. All camera devices will support either OFF or FAST mode.


Camera devices that support the MANUAL_POST_PROCESSING capability will always list
OFF mode. This includes all FULL level devices.


LEGACY devices will always only support FAST mode.


Range of valid values:
 Any value listed in android.colorCorrection.aberrationMode


This key is available on all devices.


See Also:
/**
     * <p>List of aberration correction modes for {@link CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE android.colorCorrection.aberrationMode} that are
     * supported by this camera device.</p>
     * <p>This key lists the valid modes for {@link CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE android.colorCorrection.aberrationMode}.  If no
     * aberration correction modes are available for a device, this list will solely include
     * OFF mode. All camera devices will support either OFF or FAST mode.</p>
     * <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always list
     * OFF mode. This includes all FULL level devices.</p>
     * <p>LEGACY devices will always only support FAST mode.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE android.colorCorrection.aberrationMode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE
     */
    @PublicKey
    public static final Key<int[]> COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES =
            new Key<int[]>("android.colorCorrection.availableAberrationModes", int[].class);

    
List of auto-exposure antibanding modes for android.control.aeAntibandingMode that are supported by this camera device.


Not all of the auto-exposure anti-banding modes may be supported by a given camera device. This field lists the valid anti-banding modes that the application may request for this camera device with the android.control.aeAntibandingMode control.


Range of valid values:
 Any value listed in android.control.aeAntibandingMode


This key is available on all devices.


See Also:
/**
     * <p>List of auto-exposure antibanding modes for {@link CaptureRequest#CONTROL_AE_ANTIBANDING_MODE android.control.aeAntibandingMode} that are
     * supported by this camera device.</p>
     * <p>Not all of the auto-exposure anti-banding modes may be
     * supported by a given camera device. This field lists the
     * valid anti-banding modes that the application may request
     * for this camera device with the
     * {@link CaptureRequest#CONTROL_AE_ANTIBANDING_MODE android.control.aeAntibandingMode} control.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#CONTROL_AE_ANTIBANDING_MODE android.control.aeAntibandingMode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
     */
    @PublicKey
    public static final Key<int[]> CONTROL_AE_AVAILABLE_ANTIBANDING_MODES =
            new Key<int[]>("android.control.aeAvailableAntibandingModes", int[].class);

    
List of auto-exposure modes for android.control.aeMode that are supported by this camera device.


Not all the auto-exposure modes may be supported by a given camera device, especially if no flash unit is available. This entry lists the valid modes for android.control.aeMode for this camera device.


All camera devices support ON, and all camera devices with flash
units support ON_AUTO_FLASH and ON_ALWAYS_FLASH.


FULL mode camera devices always support OFF mode,
which enables application control of camera exposure time,
sensitivity, and frame duration.


LEGACY mode camera devices never support OFF mode.
LIMITED mode devices support OFF if they support the MANUAL_SENSOR
capability.


Range of valid values:
 Any value listed in android.control.aeMode


This key is available on all devices.


See Also:
/**
     * <p>List of auto-exposure modes for {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} that are supported by this camera
     * device.</p>
     * <p>Not all the auto-exposure modes may be supported by a
     * given camera device, especially if no flash unit is
     * available. This entry lists the valid modes for
     * {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} for this camera device.</p>
     * <p>All camera devices support ON, and all camera devices with flash
     * units support ON_AUTO_FLASH and ON_ALWAYS_FLASH.</p>
     * <p>FULL mode camera devices always support OFF mode,
     * which enables application control of camera exposure time,
     * sensitivity, and frame duration.</p>
     * <p>LEGACY mode camera devices never support OFF mode.
     * LIMITED mode devices support OFF if they support the MANUAL_SENSOR
     * capability.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AE_MODE
     */
    @PublicKey
    public static final Key<int[]> CONTROL_AE_AVAILABLE_MODES =
            new Key<int[]>("android.control.aeAvailableModes", int[].class);

    
List of frame rate ranges for android.control.aeTargetFpsRange supported by this camera device.


For devices at the LEGACY level or above:



For devices at the LIMITED level or above:


    

  • For YUV_420_888 burst capture use case, this list will always include (min, max)
and (max, max) where min <= 15 and max = the maximum output frame rate of the
maximum YUV_420_888 output size.
    • 



Units: Frames per second (FPS)


This key is available on all devices.


See Also:
/**
     * <p>List of frame rate ranges for {@link CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE android.control.aeTargetFpsRange} supported by
     * this camera device.</p>
     * <p>For devices at the LEGACY level or above:</p>
     * <ul>
     * <li>
     * <p>For constant-framerate recording, for each normal
     * {@link android.media.CamcorderProfile CamcorderProfile}, that is, a
     * {@link android.media.CamcorderProfile CamcorderProfile} that has
     * {@link android.media.CamcorderProfile#quality quality} in
     * the range [{@link android.media.CamcorderProfile#QUALITY_LOW QUALITY_LOW},
     * {@link android.media.CamcorderProfile#QUALITY_2160P QUALITY_2160P}], if the profile is
     * supported by the device and has
     * {@link android.media.CamcorderProfile#videoFrameRate videoFrameRate} <code>x</code>, this list will
     * always include (<code>x</code>,<code>x</code>).</p>
     * </li>
     * <li>
     * <p>Also, a camera device must either not support any
     * {@link android.media.CamcorderProfile CamcorderProfile},
     * or support at least one
     * normal {@link android.media.CamcorderProfile CamcorderProfile} that has
     * {@link android.media.CamcorderProfile#videoFrameRate videoFrameRate} <code>x</code> &gt;= 24.</p>
     * </li>
     * </ul>
     * <p>For devices at the LIMITED level or above:</p>
     * <ul>
     * <li>For YUV_420_888 burst capture use case, this list will always include (<code>min</code>, <code>max</code>)
     * and (<code>max</code>, <code>max</code>) where <code>min</code> &lt;= 15 and <code>max</code> = the maximum output frame rate of the
     * maximum YUV_420_888 output size.</li>
     * </ul>
     * <p><b>Units</b>: Frames per second (FPS)</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
     */
    @PublicKey
    public static final Key<android.util.Range<Integer>[]> CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES =
            new Key<android.util.Range<Integer>[]>("android.control.aeAvailableTargetFpsRanges", new TypeReference<android.util.Range<Integer>[]>() {{ }});

    
Maximum and minimum exposure compensation values for android.control.aeExposureCompensation, in counts of android.control.aeCompensationStep, that are supported by this camera device.


Range of valid values:


Range [0,0] indicates that exposure compensation is not supported.


For LIMITED and FULL devices, range must follow below requirements if exposure
compensation is supported (range != [0, 0]):


Min.exposure compensation * android.control.aeCompensationStep <= -2 EV


Max.exposure compensation * android.control.aeCompensationStep >= 2 EV


LEGACY devices may support a smaller range than this.


This key is available on all devices.


See Also:
/**
     * <p>Maximum and minimum exposure compensation values for
     * {@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation}, in counts of {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP android.control.aeCompensationStep},
     * that are supported by this camera device.</p>
     * <p><b>Range of valid values:</b><br></p>
     * <p>Range [0,0] indicates that exposure compensation is not supported.</p>
     * <p>For LIMITED and FULL devices, range must follow below requirements if exposure
     * compensation is supported (<code>range != [0, 0]</code>):</p>
     * <p><code>Min.exposure compensation * {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP android.control.aeCompensationStep} &lt;= -2 EV</code></p>
     * <p><code>Max.exposure compensation * {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP android.control.aeCompensationStep} &gt;= 2 EV</code></p>
     * <p>LEGACY devices may support a smaller range than this.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP
     * @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
     */
    @PublicKey
    public static final Key<android.util.Range<Integer>> CONTROL_AE_COMPENSATION_RANGE =
            new Key<android.util.Range<Integer>>("android.control.aeCompensationRange", new TypeReference<android.util.Range<Integer>>() {{ }});

    
Smallest step by which the exposure compensation
can be changed.


This is the unit for android.control.aeExposureCompensation. For example, if this key has a value of 1/2, then a setting of -2 for android.control.aeExposureCompensation means that the target EV offset for the auto-exposure routine is -1 EV.


One unit of EV compensation changes the brightness of the captured image by a factor
of two. +1 EV doubles the image brightness, while -1 EV halves the image brightness.


Units: Exposure Value (EV)


This key is available on all devices.


See Also:
/**
     * <p>Smallest step by which the exposure compensation
     * can be changed.</p>
     * <p>This is the unit for {@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation}. For example, if this key has
     * a value of <code>1/2</code>, then a setting of <code>-2</code> for {@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation} means
     * that the target EV offset for the auto-exposure routine is -1 EV.</p>
     * <p>One unit of EV compensation changes the brightness of the captured image by a factor
     * of two. +1 EV doubles the image brightness, while -1 EV halves the image brightness.</p>
     * <p><b>Units</b>: Exposure Value (EV)</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
     */
    @PublicKey
    public static final Key<Rational> CONTROL_AE_COMPENSATION_STEP =
            new Key<Rational>("android.control.aeCompensationStep", Rational.class);

    
List of auto-focus (AF) modes for android.control.afMode that are supported by this camera device.


Not all the auto-focus modes may be supported by a given camera device. This entry lists the valid modes for android.control.afMode for this camera device.


All LIMITED and FULL mode camera devices will support OFF mode, and all
camera devices with adjustable focuser units
(android.lens.info.minimumFocusDistance > 0) will support AUTO mode.


LEGACY devices will support OFF mode only if they support focusing to infinity (by also setting android.lens.focusDistance to 0.0f).


Range of valid values:
 Any value listed in android.control.afMode


This key is available on all devices.


See Also:
/**
     * <p>List of auto-focus (AF) modes for {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode} that are
     * supported by this camera device.</p>
     * <p>Not all the auto-focus modes may be supported by a
     * given camera device. This entry lists the valid modes for
     * {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode} for this camera device.</p>
     * <p>All LIMITED and FULL mode camera devices will support OFF mode, and all
     * camera devices with adjustable focuser units
     * (<code>{@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance} &gt; 0</code>) will support AUTO mode.</p>
     * <p>LEGACY devices will support OFF mode only if they support
     * focusing to infinity (by also setting {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} to
     * <code>0.0f</code>).</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AF_MODE
     * @see CaptureRequest#LENS_FOCUS_DISTANCE
     * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
     */
    @PublicKey
    public static final Key<int[]> CONTROL_AF_AVAILABLE_MODES =
            new Key<int[]>("android.control.afAvailableModes", int[].class);

    
List of color effects for android.control.effectMode that are supported by this camera device.


This list contains the color effect modes that can be applied to
images produced by the camera device.
Implementations are not expected to be consistent across all devices.
If no color effect modes are available for a device, this will only list
OFF.


A color effect will only be applied if android.control.mode != OFF. OFF is always included in this list.


This control has no effect on the operation of other control routines such
as auto-exposure, white balance, or focus.


Range of valid values:
 Any value listed in android.control.effectMode


This key is available on all devices.


See Also:
/**
     * <p>List of color effects for {@link CaptureRequest#CONTROL_EFFECT_MODE android.control.effectMode} that are supported by this camera
     * device.</p>
     * <p>This list contains the color effect modes that can be applied to
     * images produced by the camera device.
     * Implementations are not expected to be consistent across all devices.
     * If no color effect modes are available for a device, this will only list
     * OFF.</p>
     * <p>A color effect will only be applied if
     * {@link CaptureRequest#CONTROL_MODE android.control.mode} != OFF.  OFF is always included in this list.</p>
     * <p>This control has no effect on the operation of other control routines such
     * as auto-exposure, white balance, or focus.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#CONTROL_EFFECT_MODE android.control.effectMode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_EFFECT_MODE
     * @see CaptureRequest#CONTROL_MODE
     */
    @PublicKey
    public static final Key<int[]> CONTROL_AVAILABLE_EFFECTS =
            new Key<int[]>("android.control.availableEffects", int[].class);

    
List of scene modes for android.control.sceneMode that are supported by this camera device.


This list contains scene modes that can be set for the camera device.
Only scene modes that have been fully implemented for the
camera device may be included here. Implementations are not expected
to be consistent across all devices.


If no scene modes are supported by the camera device, this
will be set to DISABLED. Otherwise DISABLED will not be listed.


FACE_PRIORITY is always listed if face detection is
supported (i.e.android.statistics.info.maxFaceCount > 0).


Range of valid values:
 Any value listed in android.control.sceneMode


This key is available on all devices.


See Also:
/**
     * <p>List of scene modes for {@link CaptureRequest#CONTROL_SCENE_MODE android.control.sceneMode} that are supported by this camera
     * device.</p>
     * <p>This list contains scene modes that can be set for the camera device.
     * Only scene modes that have been fully implemented for the
     * camera device may be included here. Implementations are not expected
     * to be consistent across all devices.</p>
     * <p>If no scene modes are supported by the camera device, this
     * will be set to DISABLED. Otherwise DISABLED will not be listed.</p>
     * <p>FACE_PRIORITY is always listed if face detection is
     * supported (i.e.<code>{@link CameraCharacteristics#STATISTICS_INFO_MAX_FACE_COUNT android.statistics.info.maxFaceCount} &gt;
     * 0</code>).</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#CONTROL_SCENE_MODE android.control.sceneMode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_SCENE_MODE
     * @see CameraCharacteristics#STATISTICS_INFO_MAX_FACE_COUNT
     */
    @PublicKey
    public static final Key<int[]> CONTROL_AVAILABLE_SCENE_MODES =
            new Key<int[]>("android.control.availableSceneModes", int[].class);

    
List of video stabilization modes for android.control.videoStabilizationMode that are supported by this camera device.


OFF will always be listed.


Range of valid values:
 Any value listed in android.control.videoStabilizationMode


This key is available on all devices.


See Also:
/**
     * <p>List of video stabilization modes for {@link CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE android.control.videoStabilizationMode}
     * that are supported by this camera device.</p>
     * <p>OFF will always be listed.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE android.control.videoStabilizationMode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
     */
    @PublicKey
    public static final Key<int[]> CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES =
            new Key<int[]>("android.control.availableVideoStabilizationModes", int[].class);

    
List of auto-white-balance modes for android.control.awbMode that are supported by this camera device.


Not all the auto-white-balance modes may be supported by a given camera device. This entry lists the valid modes for android.control.awbMode for this camera device.


All camera devices will support ON mode.


Camera devices that support the MANUAL_POST_PROCESSING capability will always support OFF mode, which enables application control of white balance, by using android.colorCorrection.transform and android.colorCorrection.gains(android.colorCorrection.mode must be set to TRANSFORM_MATRIX). This includes all FULL mode camera devices.


Range of valid values:
 Any value listed in android.control.awbMode


This key is available on all devices.


See Also:
/**
     * <p>List of auto-white-balance modes for {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} that are supported by this
     * camera device.</p>
     * <p>Not all the auto-white-balance modes may be supported by a
     * given camera device. This entry lists the valid modes for
     * {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} for this camera device.</p>
     * <p>All camera devices will support ON mode.</p>
     * <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always support OFF
     * mode, which enables application control of white balance, by using
     * {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} and {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}({@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} must be set to TRANSFORM_MATRIX). This includes all FULL
     * mode camera devices.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#COLOR_CORRECTION_GAINS
     * @see CaptureRequest#COLOR_CORRECTION_MODE
     * @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
     * @see CaptureRequest#CONTROL_AWB_MODE
     */
    @PublicKey
    public static final Key<int[]> CONTROL_AWB_AVAILABLE_MODES =
            new Key<int[]>("android.control.awbAvailableModes", int[].class);

    
List of the maximum number of regions that can be used for metering in auto-exposure (AE), auto-white balance (AWB), and auto-focus (AF); this corresponds to the the maximum number of elements in android.control.aeRegions, android.control.awbRegions, and android.control.afRegions.


Range of valid values:


Value must be >= 0 for each element. For full-capability devices
this value must be >= 1 for AE and AF. The order of the elements is:
(AE, AWB, AF).


This key is available on all devices.


See Also:
@hide
/**
     * <p>List of the maximum number of regions that can be used for metering in
     * auto-exposure (AE), auto-white balance (AWB), and auto-focus (AF);
     * this corresponds to the the maximum number of elements in
     * {@link CaptureRequest#CONTROL_AE_REGIONS android.control.aeRegions}, {@link CaptureRequest#CONTROL_AWB_REGIONS android.control.awbRegions},
     * and {@link CaptureRequest#CONTROL_AF_REGIONS android.control.afRegions}.</p>
     * <p><b>Range of valid values:</b><br></p>
     * <p>Value must be &gt;= 0 for each element. For full-capability devices
     * this value must be &gt;= 1 for AE and AF. The order of the elements is:
     * <code>(AE, AWB, AF)</code>.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AE_REGIONS
     * @see CaptureRequest#CONTROL_AF_REGIONS
     * @see CaptureRequest#CONTROL_AWB_REGIONS
     * @hide
     */
    public static final Key<int[]> CONTROL_MAX_REGIONS =
            new Key<int[]>("android.control.maxRegions", int[].class);

    
The maximum number of metering regions that can be used by the auto-exposure (AE)
routine.


This corresponds to the the maximum allowed number of elements in android.control.aeRegions.


Range of valid values:

Value will be >= 0. For FULL-capability devices, this
value will be >= 1.


This key is available on all devices.


See Also:
/**
     * <p>The maximum number of metering regions that can be used by the auto-exposure (AE)
     * routine.</p>
     * <p>This corresponds to the the maximum allowed number of elements in
     * {@link CaptureRequest#CONTROL_AE_REGIONS android.control.aeRegions}.</p>
     * <p><b>Range of valid values:</b><br>
     * Value will be &gt;= 0. For FULL-capability devices, this
     * value will be &gt;= 1.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AE_REGIONS
     */
    @PublicKey
    @SyntheticKey
    public static final Key<Integer> CONTROL_MAX_REGIONS_AE =
            new Key<Integer>("android.control.maxRegionsAe", int.class);

    
The maximum number of metering regions that can be used by the auto-white balance (AWB)
routine.


This corresponds to the the maximum allowed number of elements in android.control.awbRegions.


Range of valid values:

Value will be >= 0.


This key is available on all devices.


See Also:
/**
     * <p>The maximum number of metering regions that can be used by the auto-white balance (AWB)
     * routine.</p>
     * <p>This corresponds to the the maximum allowed number of elements in
     * {@link CaptureRequest#CONTROL_AWB_REGIONS android.control.awbRegions}.</p>
     * <p><b>Range of valid values:</b><br>
     * Value will be &gt;= 0.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AWB_REGIONS
     */
    @PublicKey
    @SyntheticKey
    public static final Key<Integer> CONTROL_MAX_REGIONS_AWB =
            new Key<Integer>("android.control.maxRegionsAwb", int.class);

    
The maximum number of metering regions that can be used by the auto-focus (AF) routine.


This corresponds to the the maximum allowed number of elements in android.control.afRegions.


Range of valid values:

Value will be >= 0. For FULL-capability devices, this
value will be >= 1.


This key is available on all devices.


See Also:
/**
     * <p>The maximum number of metering regions that can be used by the auto-focus (AF) routine.</p>
     * <p>This corresponds to the the maximum allowed number of elements in
     * {@link CaptureRequest#CONTROL_AF_REGIONS android.control.afRegions}.</p>
     * <p><b>Range of valid values:</b><br>
     * Value will be &gt;= 0. For FULL-capability devices, this
     * value will be &gt;= 1.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AF_REGIONS
     */
    @PublicKey
    @SyntheticKey
    public static final Key<Integer> CONTROL_MAX_REGIONS_AF =
            new Key<Integer>("android.control.maxRegionsAf", int.class);

    
List of available high speed video size, fps range and max batch size configurations
supported by the camera device, in the format of (width, height, fps_min, fps_max, batch_size_max).


When CONSTRAINED_HIGH_SPEED_VIDEO is supported in android.request.availableCapabilities, this metadata will list the supported high speed video size, fps range and max batch size configurations. All the sizes listed in this configuration will be a subset of the sizes reported by StreamConfigurationMap.getOutputSizes for processed non-stalling formats.


For the high speed video use case, the application must
select the video size and fps range from this metadata to configure the recording and
preview streams and setup the recording requests. For example, if the application intends
to do high speed recording, it can select the maximum size reported by this metadata to
configure output streams. Once the size is selected, application can filter this metadata
by selected size and get the supported fps ranges, and use these fps ranges to setup the
recording requests. Note that for the use case of multiple output streams, application
must select one unique size from this metadata to use (e.g., preview and recording streams
must have the same size). Otherwise, the high speed capture session creation will fail.


The min and max fps will be multiple times of 30fps.


High speed video streaming extends significant performance pressue to camera hardware, to achieve efficient high speed streaming, the camera device may have to aggregate multiple frames together and send to camera device for processing where the request controls are same for all the frames in this batch. Max batch size indicates the max possible number of frames the camera device will group together for this high speed stream configuration. This max batch size will be used to generate a high speed recording request list by CameraConstrainedHighSpeedCaptureSession.createHighSpeedRequestList. The max batch size for each configuration will satisfy below conditions:


    

  • Each max batch size will be a divisor of its corresponding fps_max / 30. For example,
if max_fps is 300, max batch size will only be 1, 2, 5, or 10.
    • 

  • The camera device may choose smaller internal batch size for each configuration, but
the actual batch size will be a divisor of max batch size. For example, if the max batch
size is 8, the actual batch size used by camera device will only be 1, 2, 4, or 8.
    • 

  • The max batch size in each configuration entry must be no larger than 32.
    • 



The camera device doesn't have to support batch mode to achieve high speed video recording,
in such case, batch_size_max will be reported as 1 in each configuration entry.


This fps ranges in this configuration list can only be used to create requests that are submitted to a high speed camera capture session created by CameraDevice.createConstrainedHighSpeedCaptureSession. The fps ranges reported in this metadata must not be used to setup capture requests for normal capture session, or it will cause request error.


Range of valid values:


For each configuration, the fps_max >= 120fps.


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
@hide
/**
     * <p>List of available high speed video size, fps range and max batch size configurations
     * supported by the camera device, in the format of (width, height, fps_min, fps_max, batch_size_max).</p>
     * <p>When CONSTRAINED_HIGH_SPEED_VIDEO is supported in {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities},
     * this metadata will list the supported high speed video size, fps range and max batch size
     * configurations. All the sizes listed in this configuration will be a subset of the sizes
     * reported by {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes }
     * for processed non-stalling formats.</p>
     * <p>For the high speed video use case, the application must
     * select the video size and fps range from this metadata to configure the recording and
     * preview streams and setup the recording requests. For example, if the application intends
     * to do high speed recording, it can select the maximum size reported by this metadata to
     * configure output streams. Once the size is selected, application can filter this metadata
     * by selected size and get the supported fps ranges, and use these fps ranges to setup the
     * recording requests. Note that for the use case of multiple output streams, application
     * must select one unique size from this metadata to use (e.g., preview and recording streams
     * must have the same size). Otherwise, the high speed capture session creation will fail.</p>
     * <p>The min and max fps will be multiple times of 30fps.</p>
     * <p>High speed video streaming extends significant performance pressue to camera hardware,
     * to achieve efficient high speed streaming, the camera device may have to aggregate
     * multiple frames together and send to camera device for processing where the request
     * controls are same for all the frames in this batch. Max batch size indicates
     * the max possible number of frames the camera device will group together for this high
     * speed stream configuration. This max batch size will be used to generate a high speed
     * recording request list by
     * {@link android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList }.
     * The max batch size for each configuration will satisfy below conditions:</p>
     * <ul>
     * <li>Each max batch size will be a divisor of its corresponding fps_max / 30. For example,
     * if max_fps is 300, max batch size will only be 1, 2, 5, or 10.</li>
     * <li>The camera device may choose smaller internal batch size for each configuration, but
     * the actual batch size will be a divisor of max batch size. For example, if the max batch
     * size is 8, the actual batch size used by camera device will only be 1, 2, 4, or 8.</li>
     * <li>The max batch size in each configuration entry must be no larger than 32.</li>
     * </ul>
     * <p>The camera device doesn't have to support batch mode to achieve high speed video recording,
     * in such case, batch_size_max will be reported as 1 in each configuration entry.</p>
     * <p>This fps ranges in this configuration list can only be used to create requests
     * that are submitted to a high speed camera capture session created by
     * {@link android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession }.
     * The fps ranges reported in this metadata must not be used to setup capture requests for
     * normal capture session, or it will cause request error.</p>
     * <p><b>Range of valid values:</b><br></p>
     * <p>For each configuration, the fps_max &gt;= 120fps.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
     * @hide
     */
    public static final Key<android.hardware.camera2.params.HighSpeedVideoConfiguration[]> CONTROL_AVAILABLE_HIGH_SPEED_VIDEO_CONFIGURATIONS =
            new Key<android.hardware.camera2.params.HighSpeedVideoConfiguration[]>("android.control.availableHighSpeedVideoConfigurations", android.hardware.camera2.params.HighSpeedVideoConfiguration[].class);

    
Whether the camera device supports android.control.aeLock


Devices with MANUAL_SENSOR capability or BURST_CAPTURE capability will always
list true. This includes FULL devices.


This key is available on all devices.


See Also:
/**
     * <p>Whether the camera device supports {@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock}</p>
     * <p>Devices with MANUAL_SENSOR capability or BURST_CAPTURE capability will always
     * list <code>true</code>. This includes FULL devices.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AE_LOCK
     */
    @PublicKey
    public static final Key<Boolean> CONTROL_AE_LOCK_AVAILABLE =
            new Key<Boolean>("android.control.aeLockAvailable", boolean.class);

    
Whether the camera device supports android.control.awbLock


Devices with MANUAL_POST_PROCESSING capability or BURST_CAPTURE capability will
always list true. This includes FULL devices.


This key is available on all devices.


See Also:
/**
     * <p>Whether the camera device supports {@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock}</p>
     * <p>Devices with MANUAL_POST_PROCESSING capability or BURST_CAPTURE capability will
     * always list <code>true</code>. This includes FULL devices.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_AWB_LOCK
     */
    @PublicKey
    public static final Key<Boolean> CONTROL_AWB_LOCK_AVAILABLE =
            new Key<Boolean>("android.control.awbLockAvailable", boolean.class);

    
List of control modes for android.control.mode that are supported by this camera device.


This list contains control modes that can be set for the camera device.
LEGACY mode devices will always support AUTO mode. LIMITED and FULL
devices will always support OFF, AUTO modes.


Range of valid values:
 Any value listed in android.control.mode


This key is available on all devices.


See Also:
/**
     * <p>List of control modes for {@link CaptureRequest#CONTROL_MODE android.control.mode} that are supported by this camera
     * device.</p>
     * <p>This list contains control modes that can be set for the camera device.
     * LEGACY mode devices will always support AUTO mode. LIMITED and FULL
     * devices will always support OFF, AUTO modes.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#CONTROL_MODE android.control.mode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#CONTROL_MODE
     */
    @PublicKey
    public static final Key<int[]> CONTROL_AVAILABLE_MODES =
            new Key<int[]>("android.control.availableModes", int[].class);

    
Range of boosts for android.control.postRawSensitivityBoost supported by this camera device.


Devices support post RAW sensitivity boost will advertise android.control.postRawSensitivityBoost key for controling post RAW sensitivity boost.


This key will be null for devices that do not support any RAW format
outputs. For devices that do support RAW format outputs, this key will always
present, and if a device does not support post RAW sensitivity boost, it will
list (100, 100) in this key.


Units: ISO arithmetic units, the same as android.sensor.sensitivity


Optional - This value may be null on some devices.


See Also:
/**
     * <p>Range of boosts for {@link CaptureRequest#CONTROL_POST_RAW_SENSITIVITY_BOOST android.control.postRawSensitivityBoost} supported
     * by this camera device.</p>
     * <p>Devices support post RAW sensitivity boost  will advertise
     * {@link CaptureRequest#CONTROL_POST_RAW_SENSITIVITY_BOOST android.control.postRawSensitivityBoost} key for controling
     * post RAW sensitivity boost.</p>
     * <p>This key will be <code>null</code> for devices that do not support any RAW format
     * outputs. For devices that do support RAW format outputs, this key will always
     * present, and if a device does not support post RAW sensitivity boost, it will
     * list <code>(100, 100)</code> in this key.</p>
     * <p><b>Units</b>: ISO arithmetic units, the same as {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CaptureRequest#CONTROL_POST_RAW_SENSITIVITY_BOOST
     * @see CaptureRequest#SENSOR_SENSITIVITY
     */
    @PublicKey
    public static final Key<android.util.Range<Integer>> CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE =
            new Key<android.util.Range<Integer>>("android.control.postRawSensitivityBoostRange", new TypeReference<android.util.Range<Integer>>() {{ }});

    
List of edge enhancement modes for android.edge.mode that are supported by this camera device.


Full-capability camera devices must always support OFF; camera devices that support
YUV_REPROCESSING or PRIVATE_REPROCESSING will list ZERO_SHUTTER_LAG; all devices will
list FAST.


Range of valid values:
 Any value listed in android.edge.mode


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>List of edge enhancement modes for {@link CaptureRequest#EDGE_MODE android.edge.mode} that are supported by this camera
     * device.</p>
     * <p>Full-capability camera devices must always support OFF; camera devices that support
     * YUV_REPROCESSING or PRIVATE_REPROCESSING will list ZERO_SHUTTER_LAG; all devices will
     * list FAST.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#EDGE_MODE android.edge.mode}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CaptureRequest#EDGE_MODE
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     */
    @PublicKey
    public static final Key<int[]> EDGE_AVAILABLE_EDGE_MODES =
            new Key<int[]>("android.edge.availableEdgeModes", int[].class);

    
Whether this camera device has a
flash unit.


Will be false if no flash is available.


If there is no flash unit, none of the flash controls do
anything.
This key is available on all devices.


/**
     * <p>Whether this camera device has a
     * flash unit.</p>
     * <p>Will be <code>false</code> if no flash is available.</p>
     * <p>If there is no flash unit, none of the flash controls do
     * anything.
     * This key is available on all devices.</p>
     */
    @PublicKey
    public static final Key<Boolean> FLASH_INFO_AVAILABLE =
            new Key<Boolean>("android.flash.info.available", boolean.class);

    
List of hot pixel correction modes for android.hotPixel.mode that are supported by this camera device.


FULL mode camera devices will always support FAST.


Range of valid values:
 Any value listed in android.hotPixel.mode


Optional - This value may be null on some devices.


See Also:
/**
     * <p>List of hot pixel correction modes for {@link CaptureRequest#HOT_PIXEL_MODE android.hotPixel.mode} that are supported by this
     * camera device.</p>
     * <p>FULL mode camera devices will always support FAST.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#HOT_PIXEL_MODE android.hotPixel.mode}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CaptureRequest#HOT_PIXEL_MODE
     */
    @PublicKey
    public static final Key<int[]> HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES =
            new Key<int[]>("android.hotPixel.availableHotPixelModes", int[].class);

    
List of JPEG thumbnail sizes for android.jpeg.thumbnailSize supported by this camera device.


This list will include at least one non-zero resolution, plus (0,0) for indicating no
thumbnail should be generated.


Below condiditions will be satisfied for this size list:


    

  • The sizes will be sorted by increasing pixel area (width x height).
If several resolutions have the same area, they will be sorted by increasing width.
    • 

  • The aspect ratio of the largest thumbnail size will be same as the
aspect ratio of largest JPEG output size in android.scaler.availableStreamConfigurations.
The largest size is defined as the size that has the largest pixel area
in a given size list.
    • 

  • Each output JPEG size in android.scaler.availableStreamConfigurations will have at least
one corresponding size that has the same aspect ratio in availableThumbnailSizes,
and vice versa.
    • 

  • All non-(0, 0) sizes will have non-zero widths and heights.
This key is available on all devices.
    • 



See Also:
/**
     * <p>List of JPEG thumbnail sizes for {@link CaptureRequest#JPEG_THUMBNAIL_SIZE android.jpeg.thumbnailSize} supported by this
     * camera device.</p>
     * <p>This list will include at least one non-zero resolution, plus <code>(0,0)</code> for indicating no
     * thumbnail should be generated.</p>
     * <p>Below condiditions will be satisfied for this size list:</p>
     * <ul>
     * <li>The sizes will be sorted by increasing pixel area (width x height).
     * If several resolutions have the same area, they will be sorted by increasing width.</li>
     * <li>The aspect ratio of the largest thumbnail size will be same as the
     * aspect ratio of largest JPEG output size in android.scaler.availableStreamConfigurations.
     * The largest size is defined as the size that has the largest pixel area
     * in a given size list.</li>
     * <li>Each output JPEG size in android.scaler.availableStreamConfigurations will have at least
     * one corresponding size that has the same aspect ratio in availableThumbnailSizes,
     * and vice versa.</li>
     * <li>All non-<code>(0, 0)</code> sizes will have non-zero widths and heights.
     * This key is available on all devices.</li>
     * </ul>
     *
     * @see CaptureRequest#JPEG_THUMBNAIL_SIZE
     */
    @PublicKey
    public static final Key<android.util.Size[]> JPEG_AVAILABLE_THUMBNAIL_SIZES =
            new Key<android.util.Size[]>("android.jpeg.availableThumbnailSizes", android.util.Size[].class);

    
List of aperture size values for android.lens.aperture that are supported by this camera device.


If the camera device doesn't support a variable lens aperture,
this list will contain only one value, which is the fixed aperture size.


If the camera device supports a variable aperture, the aperture values
in this list will be sorted in ascending order.


Units: The aperture f-number


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>List of aperture size values for {@link CaptureRequest#LENS_APERTURE android.lens.aperture} that are
     * supported by this camera device.</p>
     * <p>If the camera device doesn't support a variable lens aperture,
     * this list will contain only one value, which is the fixed aperture size.</p>
     * <p>If the camera device supports a variable aperture, the aperture values
     * in this list will be sorted in ascending order.</p>
     * <p><b>Units</b>: The aperture f-number</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#LENS_APERTURE
     */
    @PublicKey
    public static final Key<float[]> LENS_INFO_AVAILABLE_APERTURES =
            new Key<float[]>("android.lens.info.availableApertures", float[].class);

    
List of neutral density filter values for android.lens.filterDensity that are supported by this camera device.


If a neutral density filter is not supported by this camera device,
this list will contain only 0. Otherwise, this list will include every
filter density supported by the camera device, in ascending order.


Units: Exposure value (EV)


Range of valid values:


Values are >= 0


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>List of neutral density filter values for
     * {@link CaptureRequest#LENS_FILTER_DENSITY android.lens.filterDensity} that are supported by this camera device.</p>
     * <p>If a neutral density filter is not supported by this camera device,
     * this list will contain only 0. Otherwise, this list will include every
     * filter density supported by the camera device, in ascending order.</p>
     * <p><b>Units</b>: Exposure value (EV)</p>
     * <p><b>Range of valid values:</b><br></p>
     * <p>Values are &gt;= 0</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#LENS_FILTER_DENSITY
     */
    @PublicKey
    public static final Key<float[]> LENS_INFO_AVAILABLE_FILTER_DENSITIES =
            new Key<float[]>("android.lens.info.availableFilterDensities", float[].class);

    
List of focal lengths for android.lens.focalLength that are supported by this camera device.


If optical zoom is not supported, this list will only contain
a single value corresponding to the fixed focal length of the
device. Otherwise, this list will include every focal length supported
by the camera device, in ascending order.


Units: Millimeters


Range of valid values:


Values are > 0


This key is available on all devices.


See Also:
/**
     * <p>List of focal lengths for {@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength} that are supported by this camera
     * device.</p>
     * <p>If optical zoom is not supported, this list will only contain
     * a single value corresponding to the fixed focal length of the
     * device. Otherwise, this list will include every focal length supported
     * by the camera device, in ascending order.</p>
     * <p><b>Units</b>: Millimeters</p>
     * <p><b>Range of valid values:</b><br></p>
     * <p>Values are &gt; 0</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#LENS_FOCAL_LENGTH
     */
    @PublicKey
    public static final Key<float[]> LENS_INFO_AVAILABLE_FOCAL_LENGTHS =
            new Key<float[]>("android.lens.info.availableFocalLengths", float[].class);

    
List of optical image stabilization (OIS) modes for android.lens.opticalStabilizationMode that are supported by this camera device.


If OIS is not supported by a given camera device, this list will
contain only OFF.


Range of valid values:
 Any value listed in android.lens.opticalStabilizationMode


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>List of optical image stabilization (OIS) modes for
     * {@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode} that are supported by this camera device.</p>
     * <p>If OIS is not supported by a given camera device, this list will
     * contain only OFF.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
     */
    @PublicKey
    public static final Key<int[]> LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION =
            new Key<int[]>("android.lens.info.availableOpticalStabilization", int[].class);

    
Hyperfocal distance for this lens.


If the lens is not fixed focus, the camera device will report this field when android.lens.info.focusDistanceCalibration is APPROXIMATE or CALIBRATED.


Units: See android.lens.info.focusDistanceCalibration for details


Range of valid values:

If lens is fixed focus, >= 0. If lens has focuser unit, the value is
within (0.0f, android.lens.info.minimumFocusDistance]


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>Hyperfocal distance for this lens.</p>
     * <p>If the lens is not fixed focus, the camera device will report this
     * field when {@link CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION android.lens.info.focusDistanceCalibration} is APPROXIMATE or CALIBRATED.</p>
     * <p><b>Units</b>: See {@link CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION android.lens.info.focusDistanceCalibration} for details</p>
     * <p><b>Range of valid values:</b><br>
     * If lens is fixed focus, &gt;= 0. If lens has focuser unit, the value is
     * within <code>(0.0f, {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance}]</code></p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
     * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
     */
    @PublicKey
    public static final Key<Float> LENS_INFO_HYPERFOCAL_DISTANCE =
            new Key<Float>("android.lens.info.hyperfocalDistance", float.class);

    
Shortest distance from frontmost surface
of the lens that can be brought into sharp focus.


If the lens is fixed-focus, this will be
0.


Units: See android.lens.info.focusDistanceCalibration for details


Range of valid values:

>= 0


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>Shortest distance from frontmost surface
     * of the lens that can be brought into sharp focus.</p>
     * <p>If the lens is fixed-focus, this will be
     * 0.</p>
     * <p><b>Units</b>: See {@link CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION android.lens.info.focusDistanceCalibration} for details</p>
     * <p><b>Range of valid values:</b><br>
     * &gt;= 0</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
     */
    @PublicKey
    public static final Key<Float> LENS_INFO_MINIMUM_FOCUS_DISTANCE =
            new Key<Float>("android.lens.info.minimumFocusDistance", float.class);

    
Dimensions of lens shading map.


The map should be on the order of 30-40 rows and columns, and
must be smaller than 64x64.


Range of valid values:

Both values >= 1


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
@hide
/**
     * <p>Dimensions of lens shading map.</p>
     * <p>The map should be on the order of 30-40 rows and columns, and
     * must be smaller than 64x64.</p>
     * <p><b>Range of valid values:</b><br>
     * Both values &gt;= 1</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @hide
     */
    public static final Key<android.util.Size> LENS_INFO_SHADING_MAP_SIZE =
            new Key<android.util.Size>("android.lens.info.shadingMapSize", android.util.Size.class);

    
The lens focus distance calibration quality.


The lens focus distance calibration quality determines the reliability of focus related metadata entries, i.e. android.lens.focusDistance, android.lens.focusRange, android.lens.info.hyperfocalDistance, and android.lens.info.minimumFocusDistance.


APPROXIMATE and CALIBRATED devices report the focus metadata in
units of diopters (1/meter), so 0.0f represents focusing at infinity,
and increasing positive numbers represent focusing closer and closer
to the camera device. The focus distance control also uses diopters
on these devices.


UNCALIBRATED devices do not use units that are directly comparable
to any real physical measurement, but 0.0f still represents farthest focus, and android.lens.info.minimumFocusDistance represents the nearest focus the device can achieve.


Possible values:



Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>The lens focus distance calibration quality.</p>
     * <p>The lens focus distance calibration quality determines the reliability of
     * focus related metadata entries, i.e. {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance},
     * {@link CaptureResult#LENS_FOCUS_RANGE android.lens.focusRange}, {@link CameraCharacteristics#LENS_INFO_HYPERFOCAL_DISTANCE android.lens.info.hyperfocalDistance}, and
     * {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance}.</p>
     * <p>APPROXIMATE and CALIBRATED devices report the focus metadata in
     * units of diopters (1/meter), so <code>0.0f</code> represents focusing at infinity,
     * and increasing positive numbers represent focusing closer and closer
     * to the camera device. The focus distance control also uses diopters
     * on these devices.</p>
     * <p>UNCALIBRATED devices do not use units that are directly comparable
     * to any real physical measurement, but <code>0.0f</code> still represents farthest
     * focus, and {@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance} represents the
     * nearest focus the device can achieve.</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED UNCALIBRATED}</li>
     *   <li>{@link #LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE APPROXIMATE}</li>
     *   <li>{@link #LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED CALIBRATED}</li>
     * </ul></p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#LENS_FOCUS_DISTANCE
     * @see CaptureResult#LENS_FOCUS_RANGE
     * @see CameraCharacteristics#LENS_INFO_HYPERFOCAL_DISTANCE
     * @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
     * @see #LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED
     * @see #LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE
     * @see #LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED
     */
    @PublicKey
    public static final Key<Integer> LENS_INFO_FOCUS_DISTANCE_CALIBRATION =
            new Key<Integer>("android.lens.info.focusDistanceCalibration", int.class);

    
Direction the camera faces relative to
device screen.


Possible values:



This key is available on all devices.


See Also:
/**
     * <p>Direction the camera faces relative to
     * device screen.</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #LENS_FACING_FRONT FRONT}</li>
     *   <li>{@link #LENS_FACING_BACK BACK}</li>
     *   <li>{@link #LENS_FACING_EXTERNAL EXTERNAL}</li>
     * </ul></p>
     * <p>This key is available on all devices.</p>
     * @see #LENS_FACING_FRONT
     * @see #LENS_FACING_BACK
     * @see #LENS_FACING_EXTERNAL
     */
    @PublicKey
    public static final Key<Integer> LENS_FACING =
            new Key<Integer>("android.lens.facing", int.class);

    
The orientation of the camera relative to the sensor
coordinate system.


The four coefficients that describe the quaternion
rotation from the Android sensor coordinate system to a
camera-aligned coordinate system where the X-axis is
aligned with the long side of the image sensor, the Y-axis
is aligned with the short side of the image sensor, and
the Z-axis is aligned with the optical axis of the sensor.


To convert from the quaternion coefficients (x,y,z,w)
to the axis of rotation (a_x, a_y, a_z) and rotation
amount theta, the following formulas can be used:


 theta = 2 * acos(w)
a_x = x / sin(theta/2)
a_y = y / sin(theta/2)
a_z = z / sin(theta/2)



To create a 3x3 rotation matrix that applies the rotation
defined by this quaternion, the following matrix can be
used:


R = [ 1 - 2y^2 - 2z^2,       2xy - 2zw,       2xz + 2yw,
           2xy + 2zw, 1 - 2x^2 - 2z^2,       2yz - 2xw,
           2xz - 2yw,       2yz + 2xw, 1 - 2x^2 - 2y^2 ]



This matrix can then be used to apply the rotation to a
 column vector point with


p' = Rp


where p is in the device sensor coordinate system, and
 p' is in the camera-oriented coordinate system.


Units:
Quaternion coefficients


Optional - This value may be null on some devices.


/**
     * <p>The orientation of the camera relative to the sensor
     * coordinate system.</p>
     * <p>The four coefficients that describe the quaternion
     * rotation from the Android sensor coordinate system to a
     * camera-aligned coordinate system where the X-axis is
     * aligned with the long side of the image sensor, the Y-axis
     * is aligned with the short side of the image sensor, and
     * the Z-axis is aligned with the optical axis of the sensor.</p>
     * <p>To convert from the quaternion coefficients <code>(x,y,z,w)</code>
     * to the axis of rotation <code>(a_x, a_y, a_z)</code> and rotation
     * amount <code>theta</code>, the following formulas can be used:</p>
     * <pre><code> theta = 2 * acos(w)
     * a_x = x / sin(theta/2)
     * a_y = y / sin(theta/2)
     * a_z = z / sin(theta/2)
     * </code></pre>
     * <p>To create a 3x3 rotation matrix that applies the rotation
     * defined by this quaternion, the following matrix can be
     * used:</p>
     * <pre><code>R = [ 1 - 2y^2 - 2z^2,       2xy - 2zw,       2xz + 2yw,
     *            2xy + 2zw, 1 - 2x^2 - 2z^2,       2yz - 2xw,
     *            2xz - 2yw,       2yz + 2xw, 1 - 2x^2 - 2y^2 ]
     * </code></pre>
     * <p>This matrix can then be used to apply the rotation to a
     *  column vector point with</p>
     * <p><code>p' = Rp</code></p>
     * <p>where <code>p</code> is in the device sensor coordinate system, and
     *  <code>p'</code> is in the camera-oriented coordinate system.</p>
     * <p><b>Units</b>:
     * Quaternion coefficients</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     */
    @PublicKey
    public static final Key<float[]> LENS_POSE_ROTATION =
            new Key<float[]>("android.lens.poseRotation", float[].class);

    
Position of the camera optical center.


The position of the camera device's lens optical center,
as a three-dimensional vector (x,y,z).


Prior to Android P, or when android.lens.poseReference is PRIMARY_CAMERA, this position is relative to the optical center of the largest camera device facing in the same direction as this camera, in the Android sensor
coordinate axes. Note that only the axis definitions are shared with the sensor coordinate system, but not the origin.


If this device is the largest or only camera device with a given facing, then this
position will be (0, 0, 0); a camera device with a lens optical center located 3 cm
from the main sensor along the +X axis (to the right from the user's perspective) will
report (0.03, 0, 0).  Note that this means that, for many computer vision
applications, the position needs to be negated to convert it to a translation from the
camera to the origin.


To transform a pixel coordinates between two cameras facing the same direction, first the source camera android.lens.distortion must be corrected for. Then the source camera android.lens.intrinsicCalibration needs to be applied, followed by the android.lens.poseRotation of the source camera, the translation of the source camera relative to the destination camera, the android.lens.poseRotation of the destination camera, and finally the inverse of android.lens.intrinsicCalibration of the destination camera. This obtains a radial-distortion-free coordinate in the destination camera pixel coordinates.


To compare this against a real image from the destination camera, the destination camera
image then needs to be corrected for radial distortion before comparison or sampling.


When android.lens.poseReference is GYROSCOPE, then this position is relative to the center of the primary gyroscope on the device. The axis definitions are the same as with PRIMARY_CAMERA.


Units: Meters


Optional - This value may be null on some devices.


See Also:
/**
     * <p>Position of the camera optical center.</p>
     * <p>The position of the camera device's lens optical center,
     * as a three-dimensional vector <code>(x,y,z)</code>.</p>
     * <p>Prior to Android P, or when {@link CameraCharacteristics#LENS_POSE_REFERENCE android.lens.poseReference} is PRIMARY_CAMERA, this position
     * is relative to the optical center of the largest camera device facing in the same
     * direction as this camera, in the {@link android.hardware.SensorEvent Android sensor
     * coordinate axes}. Note that only the axis definitions are shared with the sensor
     * coordinate system, but not the origin.</p>
     * <p>If this device is the largest or only camera device with a given facing, then this
     * position will be <code>(0, 0, 0)</code>; a camera device with a lens optical center located 3 cm
     * from the main sensor along the +X axis (to the right from the user's perspective) will
     * report <code>(0.03, 0, 0)</code>.  Note that this means that, for many computer vision
     * applications, the position needs to be negated to convert it to a translation from the
     * camera to the origin.</p>
     * <p>To transform a pixel coordinates between two cameras facing the same direction, first
     * the source camera {@link CameraCharacteristics#LENS_DISTORTION android.lens.distortion} must be corrected for.  Then the source
     * camera {@link CameraCharacteristics#LENS_INTRINSIC_CALIBRATION android.lens.intrinsicCalibration} needs to be applied, followed by the
     * {@link CameraCharacteristics#LENS_POSE_ROTATION android.lens.poseRotation} of the source camera, the translation of the source camera
     * relative to the destination camera, the {@link CameraCharacteristics#LENS_POSE_ROTATION android.lens.poseRotation} of the destination
     * camera, and finally the inverse of {@link CameraCharacteristics#LENS_INTRINSIC_CALIBRATION android.lens.intrinsicCalibration} of the destination
     * camera. This obtains a radial-distortion-free coordinate in the destination camera pixel
     * coordinates.</p>
     * <p>To compare this against a real image from the destination camera, the destination camera
     * image then needs to be corrected for radial distortion before comparison or sampling.</p>
     * <p>When {@link CameraCharacteristics#LENS_POSE_REFERENCE android.lens.poseReference} is GYROSCOPE, then this position is relative to
     * the center of the primary gyroscope on the device. The axis definitions are the same as
     * with PRIMARY_CAMERA.</p>
     * <p><b>Units</b>: Meters</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#LENS_DISTORTION
     * @see CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
     * @see CameraCharacteristics#LENS_POSE_REFERENCE
     * @see CameraCharacteristics#LENS_POSE_ROTATION
     */
    @PublicKey
    public static final Key<float[]> LENS_POSE_TRANSLATION =
            new Key<float[]>("android.lens.poseTranslation", float[].class);

    
The parameters for this camera device's intrinsic
calibration.


The five calibration parameters that describe the
transform from camera-centric 3D coordinates to sensor
pixel coordinates:


[f_x, f_y, c_x, c_y, s]



Where f_x and f_y are the horizontal and vertical
focal lengths, [c_x, c_y] is the position of the optical
axis, and s is a skew parameter for the sensor plane not
being aligned with the lens plane.


These are typically used within a transformation matrix K:


K = [ f_x,   s, c_x,
       0, f_y, c_y,
       0    0,   1 ]



which can then be combined with the camera pose rotation
R and translation t (android.lens.poseRotation and android.lens.poseTranslation, respectively) to calculate the complete transform from world coordinates to pixel coordinates:


P = [ K 0   * [ R -Rt
     0 1 ]      0 1 ]



(Note the negation of poseTranslation when mapping from camera
to world coordinates, and multiplication by the rotation).


With p_w being a point in the world coordinate system
and p_s being a point in the camera active pixel array
coordinate system, and with the mapping including the
homogeneous division by z:


 p_h = (x_h, y_h, z_h) = P p_w
p_s = p_h / z_h



so [x_s, y_s] is the pixel coordinates of the world
point, z_s = 1, and w_s is a measurement of disparity
(depth) in pixel coordinates.


Note that the coordinate system for this transform is the android.sensor.info.preCorrectionActiveArraySize system, where (0,0) is the top-left of the preCorrectionActiveArraySize rectangle. Once the pose and intrinsic calibration transforms have been applied to a world point, then the android.lens.distortion transform needs to be applied, and the result adjusted to be in the android.sensor.info.activeArraySize coordinate system (where (0, 0) is the top-left of the
activeArraySize rectangle), to determine the final pixel
coordinate of the world point for processed (non-RAW)
output buffers.


For camera devices, the center of pixel (x,y) is located at
coordinate (x + 0.5, y + 0.5).  So on a device with a
precorrection active array of size (10,10), the valid pixel
indices go from (0,0)-(9,9), and an perfectly-built camera would
have an optical center at the exact center of the pixel grid, at
coordinates (5.0, 5.0), which is the top-left corner of pixel
(5,5).


Units: Pixels in the android.sensor.info.preCorrectionActiveArraySize coordinate system.


Optional - This value may be null on some devices.


See Also:
/**
     * <p>The parameters for this camera device's intrinsic
     * calibration.</p>
     * <p>The five calibration parameters that describe the
     * transform from camera-centric 3D coordinates to sensor
     * pixel coordinates:</p>
     * <pre><code>[f_x, f_y, c_x, c_y, s]
     * </code></pre>
     * <p>Where <code>f_x</code> and <code>f_y</code> are the horizontal and vertical
     * focal lengths, <code>[c_x, c_y]</code> is the position of the optical
     * axis, and <code>s</code> is a skew parameter for the sensor plane not
     * being aligned with the lens plane.</p>
     * <p>These are typically used within a transformation matrix K:</p>
     * <pre><code>K = [ f_x,   s, c_x,
     *        0, f_y, c_y,
     *        0    0,   1 ]
     * </code></pre>
     * <p>which can then be combined with the camera pose rotation
     * <code>R</code> and translation <code>t</code> ({@link CameraCharacteristics#LENS_POSE_ROTATION android.lens.poseRotation} and
     * {@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation}, respectively) to calculate the
     * complete transform from world coordinates to pixel
     * coordinates:</p>
     * <pre><code>P = [ K 0   * [ R -Rt
     *      0 1 ]      0 1 ]
     * </code></pre>
     * <p>(Note the negation of poseTranslation when mapping from camera
     * to world coordinates, and multiplication by the rotation).</p>
     * <p>With <code>p_w</code> being a point in the world coordinate system
     * and <code>p_s</code> being a point in the camera active pixel array
     * coordinate system, and with the mapping including the
     * homogeneous division by z:</p>
     * <pre><code> p_h = (x_h, y_h, z_h) = P p_w
     * p_s = p_h / z_h
     * </code></pre>
     * <p>so <code>[x_s, y_s]</code> is the pixel coordinates of the world
     * point, <code>z_s = 1</code>, and <code>w_s</code> is a measurement of disparity
     * (depth) in pixel coordinates.</p>
     * <p>Note that the coordinate system for this transform is the
     * {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize} system,
     * where <code>(0,0)</code> is the top-left of the
     * preCorrectionActiveArraySize rectangle. Once the pose and
     * intrinsic calibration transforms have been applied to a
     * world point, then the {@link CameraCharacteristics#LENS_DISTORTION android.lens.distortion}
     * transform needs to be applied, and the result adjusted to
     * be in the {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize} coordinate
     * system (where <code>(0, 0)</code> is the top-left of the
     * activeArraySize rectangle), to determine the final pixel
     * coordinate of the world point for processed (non-RAW)
     * output buffers.</p>
     * <p>For camera devices, the center of pixel <code>(x,y)</code> is located at
     * coordinate <code>(x + 0.5, y + 0.5)</code>.  So on a device with a
     * precorrection active array of size <code>(10,10)</code>, the valid pixel
     * indices go from <code>(0,0)-(9,9)</code>, and an perfectly-built camera would
     * have an optical center at the exact center of the pixel grid, at
     * coordinates <code>(5.0, 5.0)</code>, which is the top-left corner of pixel
     * <code>(5,5)</code>.</p>
     * <p><b>Units</b>:
     * Pixels in the
     * {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize}
     * coordinate system.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#LENS_DISTORTION
     * @see CameraCharacteristics#LENS_POSE_ROTATION
     * @see CameraCharacteristics#LENS_POSE_TRANSLATION
     * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
     * @see CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
     */
    @PublicKey
    public static final Key<float[]> LENS_INTRINSIC_CALIBRATION =
            new Key<float[]>("android.lens.intrinsicCalibration", float[].class);

    
The correction coefficients to correct for this camera device's
radial and tangential lens distortion.


Four radial distortion coefficients [kappa_0, kappa_1, kappa_2,
kappa_3] and two tangential distortion coefficients
[kappa_4, kappa_5] that can be used to correct the
lens's geometric distortion with the mapping equations:


 x_c = x_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
       kappa_4 * (2 * x_i * y_i) + kappa_5 * ( r^2 + 2 * x_i^2 )
 y_c = y_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
       kappa_5 * (2 * x_i * y_i) + kappa_4 * ( r^2 + 2 * y_i^2 )



Here, [x_c, y_c] are the coordinates to sample in the
input image that correspond to the pixel values in the
corrected image at the coordinate [x_i, y_i]:


 correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)



The pixel coordinates are defined in a normalized coordinate system related to the android.lens.intrinsicCalibration calibration fields. Both [x_i, y_i] and [x_c, y_c] have (0,0) at the
lens optical center [c_x, c_y]. The maximum magnitudes
of both x and y coordinates are normalized to be 1 at the
edge further from the optical center, so the range
for both dimensions is -1 <= x <= 1.


Finally, r represents the radial distance from the
optical center, r^2 = x_i^2 + y_i^2, and its magnitude
is therefore no larger than |r| <= sqrt(2).


The distortion model used is the Brown-Conrady model.


Units:
Unitless coefficients.


Optional - This value may be null on some devices.


See Also:
Deprecated:

This field was inconsistently defined in terms of its normalization. Use android.lens.distortion instead.
/**
     * <p>The correction coefficients to correct for this camera device's
     * radial and tangential lens distortion.</p>
     * <p>Four radial distortion coefficients <code>[kappa_0, kappa_1, kappa_2,
     * kappa_3]</code> and two tangential distortion coefficients
     * <code>[kappa_4, kappa_5]</code> that can be used to correct the
     * lens's geometric distortion with the mapping equations:</p>
     * <pre><code> x_c = x_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
     *        kappa_4 * (2 * x_i * y_i) + kappa_5 * ( r^2 + 2 * x_i^2 )
     *  y_c = y_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
     *        kappa_5 * (2 * x_i * y_i) + kappa_4 * ( r^2 + 2 * y_i^2 )
     * </code></pre>
     * <p>Here, <code>[x_c, y_c]</code> are the coordinates to sample in the
     * input image that correspond to the pixel values in the
     * corrected image at the coordinate <code>[x_i, y_i]</code>:</p>
     * <pre><code> correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)
     * </code></pre>
     * <p>The pixel coordinates are defined in a normalized
     * coordinate system related to the
     * {@link CameraCharacteristics#LENS_INTRINSIC_CALIBRATION android.lens.intrinsicCalibration} calibration fields.
     * Both <code>[x_i, y_i]</code> and <code>[x_c, y_c]</code> have <code>(0,0)</code> at the
     * lens optical center <code>[c_x, c_y]</code>. The maximum magnitudes
     * of both x and y coordinates are normalized to be 1 at the
     * edge further from the optical center, so the range
     * for both dimensions is <code>-1 &lt;= x &lt;= 1</code>.</p>
     * <p>Finally, <code>r</code> represents the radial distance from the
     * optical center, <code>r^2 = x_i^2 + y_i^2</code>, and its magnitude
     * is therefore no larger than <code>|r| &lt;= sqrt(2)</code>.</p>
     * <p>The distortion model used is the Brown-Conrady model.</p>
     * <p><b>Units</b>:
     * Unitless coefficients.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
     * @deprecated
     * <p>This field was inconsistently defined in terms of its
     * normalization. Use {@link CameraCharacteristics#LENS_DISTORTION android.lens.distortion} instead.</p>
     *
     * @see CameraCharacteristics#LENS_DISTORTION

     */
    @Deprecated
    @PublicKey
    public static final Key<float[]> LENS_RADIAL_DISTORTION =
            new Key<float[]>("android.lens.radialDistortion", float[].class);

    
The origin for android.lens.poseTranslation.


Different calibration methods and use cases can produce better or worse results
depending on the selected coordinate origin.


Possible values:



Optional - This value may be null on some devices.


See Also:
/**
     * <p>The origin for {@link CameraCharacteristics#LENS_POSE_TRANSLATION android.lens.poseTranslation}.</p>
     * <p>Different calibration methods and use cases can produce better or worse results
     * depending on the selected coordinate origin.</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #LENS_POSE_REFERENCE_PRIMARY_CAMERA PRIMARY_CAMERA}</li>
     *   <li>{@link #LENS_POSE_REFERENCE_GYROSCOPE GYROSCOPE}</li>
     * </ul></p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#LENS_POSE_TRANSLATION
     * @see #LENS_POSE_REFERENCE_PRIMARY_CAMERA
     * @see #LENS_POSE_REFERENCE_GYROSCOPE
     */
    @PublicKey
    public static final Key<Integer> LENS_POSE_REFERENCE =
            new Key<Integer>("android.lens.poseReference", int.class);

    
The correction coefficients to correct for this camera device's
radial and tangential lens distortion.


Replaces the deprecated android.lens.radialDistortion field, which was inconsistently defined.


Three radial distortion coefficients [kappa_1, kappa_2,
kappa_3] and two tangential distortion coefficients
[kappa_4, kappa_5] that can be used to correct the
lens's geometric distortion with the mapping equations:


 x_c = x_i * ( 1 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
       kappa_4 * (2 * x_i * y_i) + kappa_5 * ( r^2 + 2 * x_i^2 )
 y_c = y_i * ( 1 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
       kappa_5 * (2 * x_i * y_i) + kappa_4 * ( r^2 + 2 * y_i^2 )



Here, [x_c, y_c] are the coordinates to sample in the
input image that correspond to the pixel values in the
corrected image at the coordinate [x_i, y_i]:


 correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)



The pixel coordinates are defined in a coordinate system related to the android.lens.intrinsicCalibration calibration fields; see that entry for details of the mapping stages. Both [x_i, y_i] and [x_c, y_c]
have (0,0) at the lens optical center [c_x, c_y], and
the range of the coordinates depends on the focal length
terms of the intrinsic calibration.


Finally, r represents the radial distance from the
optical center, r^2 = x_i^2 + y_i^2.


The distortion model used is the Brown-Conrady model.


Units:
Unitless coefficients.


Optional - This value may be null on some devices.


See Also:
/**
     * <p>The correction coefficients to correct for this camera device's
     * radial and tangential lens distortion.</p>
     * <p>Replaces the deprecated {@link CameraCharacteristics#LENS_RADIAL_DISTORTION android.lens.radialDistortion} field, which was
     * inconsistently defined.</p>
     * <p>Three radial distortion coefficients <code>[kappa_1, kappa_2,
     * kappa_3]</code> and two tangential distortion coefficients
     * <code>[kappa_4, kappa_5]</code> that can be used to correct the
     * lens's geometric distortion with the mapping equations:</p>
     * <pre><code> x_c = x_i * ( 1 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
     *        kappa_4 * (2 * x_i * y_i) + kappa_5 * ( r^2 + 2 * x_i^2 )
     *  y_c = y_i * ( 1 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
     *        kappa_5 * (2 * x_i * y_i) + kappa_4 * ( r^2 + 2 * y_i^2 )
     * </code></pre>
     * <p>Here, <code>[x_c, y_c]</code> are the coordinates to sample in the
     * input image that correspond to the pixel values in the
     * corrected image at the coordinate <code>[x_i, y_i]</code>:</p>
     * <pre><code> correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)
     * </code></pre>
     * <p>The pixel coordinates are defined in a coordinate system
     * related to the {@link CameraCharacteristics#LENS_INTRINSIC_CALIBRATION android.lens.intrinsicCalibration}
     * calibration fields; see that entry for details of the mapping stages.
     * Both <code>[x_i, y_i]</code> and <code>[x_c, y_c]</code>
     * have <code>(0,0)</code> at the lens optical center <code>[c_x, c_y]</code>, and
     * the range of the coordinates depends on the focal length
     * terms of the intrinsic calibration.</p>
     * <p>Finally, <code>r</code> represents the radial distance from the
     * optical center, <code>r^2 = x_i^2 + y_i^2</code>.</p>
     * <p>The distortion model used is the Brown-Conrady model.</p>
     * <p><b>Units</b>:
     * Unitless coefficients.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
     * @see CameraCharacteristics#LENS_RADIAL_DISTORTION
     */
    @PublicKey
    public static final Key<float[]> LENS_DISTORTION =
            new Key<float[]>("android.lens.distortion", float[].class);

    
List of noise reduction modes for android.noiseReduction.mode that are supported by this camera device.


Full-capability camera devices will always support OFF and FAST.


Camera devices that support YUV_REPROCESSING or PRIVATE_REPROCESSING will support
ZERO_SHUTTER_LAG.


Legacy-capability camera devices will only support FAST mode.


Range of valid values:
 Any value listed in android.noiseReduction.mode


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>List of noise reduction modes for {@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode} that are supported
     * by this camera device.</p>
     * <p>Full-capability camera devices will always support OFF and FAST.</p>
     * <p>Camera devices that support YUV_REPROCESSING or PRIVATE_REPROCESSING will support
     * ZERO_SHUTTER_LAG.</p>
     * <p>Legacy-capability camera devices will only support FAST mode.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#NOISE_REDUCTION_MODE
     */
    @PublicKey
    public static final Key<int[]> NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES =
            new Key<int[]>("android.noiseReduction.availableNoiseReductionModes", int[].class);

    
If set to 1, the HAL will always split result
metadata for a single capture into multiple buffers,
returned using multiple process_capture_result calls.


Does not need to be listed in static
metadata. Support for partial results will be reworked in
future versions of camera service. This quirk will stop
working at that point; DO NOT USE without careful
consideration of future support.


Optional - This value may be null on some devices.


Deprecated:

Not used in HALv3 or newer; replaced by better partials mechanism
@hide
/**
     * <p>If set to 1, the HAL will always split result
     * metadata for a single capture into multiple buffers,
     * returned using multiple process_capture_result calls.</p>
     * <p>Does not need to be listed in static
     * metadata. Support for partial results will be reworked in
     * future versions of camera service. This quirk will stop
     * working at that point; DO NOT USE without careful
     * consideration of future support.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * @deprecated
     * <p>Not used in HALv3 or newer; replaced by better partials mechanism</p>

     * @hide
     */
    @Deprecated
    public static final Key<Byte> QUIRKS_USE_PARTIAL_RESULT =
            new Key<Byte>("android.quirks.usePartialResult", byte.class);

    
The maximum numbers of different types of output streams
that can be configured and used simultaneously by a camera device.


This is a 3 element tuple that contains the max number of output simultaneous
streams for raw sensor, processed (but not stalling), and processed (and stalling)
formats respectively. For example, assuming that JPEG is typically a processed and
stalling stream, if max raw sensor format output stream number is 1, max YUV streams
number is 3, and max JPEG stream number is 2, then this tuple should be (1, 3, 2).


This lists the upper bound of the number of output streams supported by
the camera device. Using more streams simultaneously may require more hardware and
CPU resources that will consume more power. The image format for an output stream can
be any supported format provided by android.scaler.availableStreamConfigurations.
The formats defined in android.scaler.availableStreamConfigurations can be catergorized
into the 3 stream types as below:


    

  • Processed (but stalling): any non-RAW format with a stallDurations > 0. Typically JPEG format.
    • 

  • Raw formats: RAW_SENSOR, RAW10, or RAW12.
    • 

  • Processed (but not-stalling): any non-RAW format without a stall duration. Typically YUV_420_888, NV21, or YV12.
    • 



Range of valid values:


For processed (and stalling) format streams, >= 1.


For Raw format (either stalling or non-stalling) streams, >= 0.


For processed (but not stalling) format streams, >= 3
for FULL mode devices (android.info.supportedHardwareLevel == FULL);
>= 2 for LIMITED mode devices (android.info.supportedHardwareLevel == LIMITED).


This key is available on all devices.


See Also:
@hide
/**
     * <p>The maximum numbers of different types of output streams
     * that can be configured and used simultaneously by a camera device.</p>
     * <p>This is a 3 element tuple that contains the max number of output simultaneous
     * streams for raw sensor, processed (but not stalling), and processed (and stalling)
     * formats respectively. For example, assuming that JPEG is typically a processed and
     * stalling stream, if max raw sensor format output stream number is 1, max YUV streams
     * number is 3, and max JPEG stream number is 2, then this tuple should be <code>(1, 3, 2)</code>.</p>
     * <p>This lists the upper bound of the number of output streams supported by
     * the camera device. Using more streams simultaneously may require more hardware and
     * CPU resources that will consume more power. The image format for an output stream can
     * be any supported format provided by android.scaler.availableStreamConfigurations.
     * The formats defined in android.scaler.availableStreamConfigurations can be catergorized
     * into the 3 stream types as below:</p>
     * <ul>
     * <li>Processed (but stalling): any non-RAW format with a stallDurations &gt; 0.
     *   Typically {@link android.graphics.ImageFormat#JPEG JPEG format}.</li>
     * <li>Raw formats: {@link android.graphics.ImageFormat#RAW_SENSOR RAW_SENSOR}, {@link android.graphics.ImageFormat#RAW10 RAW10}, or
     *   {@link android.graphics.ImageFormat#RAW12 RAW12}.</li>
     * <li>Processed (but not-stalling): any non-RAW format without a stall duration.  Typically
     *   {@link android.graphics.ImageFormat#YUV_420_888 YUV_420_888},
     *   {@link android.graphics.ImageFormat#NV21 NV21}, or {@link android.graphics.ImageFormat#YV12 YV12}.</li>
     * </ul>
     * <p><b>Range of valid values:</b><br></p>
     * <p>For processed (and stalling) format streams, &gt;= 1.</p>
     * <p>For Raw format (either stalling or non-stalling) streams, &gt;= 0.</p>
     * <p>For processed (but not stalling) format streams, &gt;= 3
     * for FULL mode devices (<code>{@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} == FULL</code>);
     * &gt;= 2 for LIMITED mode devices (<code>{@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} == LIMITED</code>).</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @hide
     */
    public static final Key<int[]> REQUEST_MAX_NUM_OUTPUT_STREAMS =
            new Key<int[]>("android.request.maxNumOutputStreams", int[].class);

    
The maximum numbers of different types of output streams
that can be configured and used simultaneously by a camera device
for any RAW formats.


This value contains the max number of output simultaneous
streams from the raw sensor.


This lists the upper bound of the number of output streams supported by
the camera device. Using more streams simultaneously may require more hardware and
CPU resources that will consume more power. The image format for this kind of an output stream can
be any RAW and supported format provided by android.scaler.streamConfigurationMap.


In particular, a RAW format is typically one of:



LEGACY mode devices (android.info.supportedHardwareLevel == LEGACY)
never support raw streams.


Range of valid values:


>= 0


This key is available on all devices.


See Also:
/**
     * <p>The maximum numbers of different types of output streams
     * that can be configured and used simultaneously by a camera device
     * for any <code>RAW</code> formats.</p>
     * <p>This value contains the max number of output simultaneous
     * streams from the raw sensor.</p>
     * <p>This lists the upper bound of the number of output streams supported by
     * the camera device. Using more streams simultaneously may require more hardware and
     * CPU resources that will consume more power. The image format for this kind of an output stream can
     * be any <code>RAW</code> and supported format provided by {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap}.</p>
     * <p>In particular, a <code>RAW</code> format is typically one of:</p>
     * <ul>
     * <li>{@link android.graphics.ImageFormat#RAW_SENSOR RAW_SENSOR}</li>
     * <li>{@link android.graphics.ImageFormat#RAW10 RAW10}</li>
     * <li>{@link android.graphics.ImageFormat#RAW12 RAW12}</li>
     * </ul>
     * <p>LEGACY mode devices ({@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} <code>==</code> LEGACY)
     * never support raw streams.</p>
     * <p><b>Range of valid values:</b><br></p>
     * <p>&gt;= 0</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
     */
    @PublicKey
    @SyntheticKey
    public static final Key<Integer> REQUEST_MAX_NUM_OUTPUT_RAW =
            new Key<Integer>("android.request.maxNumOutputRaw", int.class);

    
The maximum numbers of different types of output streams
that can be configured and used simultaneously by a camera device
for any processed (but not-stalling) formats.


This value contains the max number of output simultaneous
streams for any processed (but not-stalling) formats.


This lists the upper bound of the number of output streams supported by
the camera device. Using more streams simultaneously may require more hardware and
CPU resources that will consume more power. The image format for this kind of an output stream can
be any non-RAW and supported format provided by android.scaler.streamConfigurationMap.


Processed (but not-stalling) is defined as any non-RAW format without a stall duration.
Typically:



For full guarantees, query StreamConfigurationMap.getOutputStallDuration with a processed format -- it will return 0 for a non-stalling stream.


LEGACY devices will support at least 2 processing/non-stalling streams.


Range of valid values:


>= 3
for FULL mode devices (android.info.supportedHardwareLevel == FULL);
>= 2 for LIMITED mode devices (android.info.supportedHardwareLevel == LIMITED).


This key is available on all devices.


See Also:
/**
     * <p>The maximum numbers of different types of output streams
     * that can be configured and used simultaneously by a camera device
     * for any processed (but not-stalling) formats.</p>
     * <p>This value contains the max number of output simultaneous
     * streams for any processed (but not-stalling) formats.</p>
     * <p>This lists the upper bound of the number of output streams supported by
     * the camera device. Using more streams simultaneously may require more hardware and
     * CPU resources that will consume more power. The image format for this kind of an output stream can
     * be any non-<code>RAW</code> and supported format provided by {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap}.</p>
     * <p>Processed (but not-stalling) is defined as any non-RAW format without a stall duration.
     * Typically:</p>
     * <ul>
     * <li>{@link android.graphics.ImageFormat#YUV_420_888 YUV_420_888}</li>
     * <li>{@link android.graphics.ImageFormat#NV21 NV21}</li>
     * <li>{@link android.graphics.ImageFormat#YV12 YV12}</li>
     * <li>Implementation-defined formats, i.e. {@link android.hardware.camera2.params.StreamConfigurationMap#isOutputSupportedFor(Class) }</li>
     * </ul>
     * <p>For full guarantees, query {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration } with a
     * processed format -- it will return 0 for a non-stalling stream.</p>
     * <p>LEGACY devices will support at least 2 processing/non-stalling streams.</p>
     * <p><b>Range of valid values:</b><br></p>
     * <p>&gt;= 3
     * for FULL mode devices (<code>{@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} == FULL</code>);
     * &gt;= 2 for LIMITED mode devices (<code>{@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} == LIMITED</code>).</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
     */
    @PublicKey
    @SyntheticKey
    public static final Key<Integer> REQUEST_MAX_NUM_OUTPUT_PROC =
            new Key<Integer>("android.request.maxNumOutputProc", int.class);

    
The maximum numbers of different types of output streams
that can be configured and used simultaneously by a camera device
for any processed (and stalling) formats.


This value contains the max number of output simultaneous
streams for any processed (but not-stalling) formats.


This lists the upper bound of the number of output streams supported by
the camera device. Using more streams simultaneously may require more hardware and
CPU resources that will consume more power. The image format for this kind of an output stream can
be any non-RAW and supported format provided by android.scaler.streamConfigurationMap.


A processed and stalling format is defined as any non-RAW format with a stallDurations > 0. Typically only the JPEG format is a stalling format.


For full guarantees, query StreamConfigurationMap.getOutputStallDuration with a processed format -- it will return a non-0 value for a stalling stream.


LEGACY devices will support up to 1 processing/stalling stream.


Range of valid values:


>= 1


This key is available on all devices.


See Also:
/**
     * <p>The maximum numbers of different types of output streams
     * that can be configured and used simultaneously by a camera device
     * for any processed (and stalling) formats.</p>
     * <p>This value contains the max number of output simultaneous
     * streams for any processed (but not-stalling) formats.</p>
     * <p>This lists the upper bound of the number of output streams supported by
     * the camera device. Using more streams simultaneously may require more hardware and
     * CPU resources that will consume more power. The image format for this kind of an output stream can
     * be any non-<code>RAW</code> and supported format provided by {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap}.</p>
     * <p>A processed and stalling format is defined as any non-RAW format with a stallDurations
     * &gt; 0.  Typically only the {@link android.graphics.ImageFormat#JPEG JPEG format} is a stalling format.</p>
     * <p>For full guarantees, query {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration } with a
     * processed format -- it will return a non-0 value for a stalling stream.</p>
     * <p>LEGACY devices will support up to 1 processing/stalling stream.</p>
     * <p><b>Range of valid values:</b><br></p>
     * <p>&gt;= 1</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
     */
    @PublicKey
    @SyntheticKey
    public static final Key<Integer> REQUEST_MAX_NUM_OUTPUT_PROC_STALLING =
            new Key<Integer>("android.request.maxNumOutputProcStalling", int.class);

    
The maximum numbers of any type of input streams
that can be configured and used simultaneously by a camera device.


When set to 0, it means no input stream is supported.


The image format for a input stream can be any supported format returned by StreamConfigurationMap.getInputFormats. When using an input stream, there must be at least one output stream configured to to receive the reprocessed images.


When an input stream and some output streams are used in a reprocessing request,
only the input buffer will be used to produce these output stream buffers, and a
new sensor image will not be captured.


For example, for Zero Shutter Lag (ZSL) still capture use case, the input
stream image format will be PRIVATE, the associated output stream image format
should be JPEG.


Range of valid values:


0 or 1.


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>The maximum numbers of any type of input streams
     * that can be configured and used simultaneously by a camera device.</p>
     * <p>When set to 0, it means no input stream is supported.</p>
     * <p>The image format for a input stream can be any supported format returned by {@link android.hardware.camera2.params.StreamConfigurationMap#getInputFormats }. When using an
     * input stream, there must be at least one output stream configured to to receive the
     * reprocessed images.</p>
     * <p>When an input stream and some output streams are used in a reprocessing request,
     * only the input buffer will be used to produce these output stream buffers, and a
     * new sensor image will not be captured.</p>
     * <p>For example, for Zero Shutter Lag (ZSL) still capture use case, the input
     * stream image format will be PRIVATE, the associated output stream image format
     * should be JPEG.</p>
     * <p><b>Range of valid values:</b><br></p>
     * <p>0 or 1.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     */
    @PublicKey
    public static final Key<Integer> REQUEST_MAX_NUM_INPUT_STREAMS =
            new Key<Integer>("android.request.maxNumInputStreams", int.class);

    
Specifies the number of maximum pipeline stages a frame
has to go through from when it's exposed to when it's available
to the framework.


A typical minimum value for this is 2 (one stage to expose,
one stage to readout) from the sensor. The ISP then usually adds
its own stages to do custom HW processing. Further stages may be
added by SW processing.


Depending on what settings are used (e.g. YUV, JPEG) and what processing is enabled (e.g. face detection), the actual pipeline depth (specified by android.request.pipelineDepth) may be less than the max pipeline depth.


A pipeline depth of X stages is equivalent to a pipeline latency of
X frame intervals.


This value will normally be 8 or less, however, for high speed capture session,
the max pipeline depth will be up to 8 x size of high speed capture request list.


This key is available on all devices.


See Also:
/**
     * <p>Specifies the number of maximum pipeline stages a frame
     * has to go through from when it's exposed to when it's available
     * to the framework.</p>
     * <p>A typical minimum value for this is 2 (one stage to expose,
     * one stage to readout) from the sensor. The ISP then usually adds
     * its own stages to do custom HW processing. Further stages may be
     * added by SW processing.</p>
     * <p>Depending on what settings are used (e.g. YUV, JPEG) and what
     * processing is enabled (e.g. face detection), the actual pipeline
     * depth (specified by {@link CaptureResult#REQUEST_PIPELINE_DEPTH android.request.pipelineDepth}) may be less than
     * the max pipeline depth.</p>
     * <p>A pipeline depth of X stages is equivalent to a pipeline latency of
     * X frame intervals.</p>
     * <p>This value will normally be 8 or less, however, for high speed capture session,
     * the max pipeline depth will be up to 8 x size of high speed capture request list.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureResult#REQUEST_PIPELINE_DEPTH
     */
    @PublicKey
    public static final Key<Byte> REQUEST_PIPELINE_MAX_DEPTH =
            new Key<Byte>("android.request.pipelineMaxDepth", byte.class);

    
Defines how many sub-components
a result will be composed of.


In order to combat the pipeline latency, partial results
may be delivered to the application layer from the camera device as
soon as they are available.


Optional; defaults to 1. A value of 1 means that partial
results are not supported, and only the final TotalCaptureResult will
be produced by the camera device.


A typical use case for this might be: after requesting an
auto-focus (AF) lock the new AF state might be available 50%
of the way through the pipeline.  The camera device could
then immediately dispatch this state via a partial result to
the application, and the rest of the metadata via later
partial results.


Range of valid values:

>= 1


Optional - This value may be null on some devices.


/**
     * <p>Defines how many sub-components
     * a result will be composed of.</p>
     * <p>In order to combat the pipeline latency, partial results
     * may be delivered to the application layer from the camera device as
     * soon as they are available.</p>
     * <p>Optional; defaults to 1. A value of 1 means that partial
     * results are not supported, and only the final TotalCaptureResult will
     * be produced by the camera device.</p>
     * <p>A typical use case for this might be: after requesting an
     * auto-focus (AF) lock the new AF state might be available 50%
     * of the way through the pipeline.  The camera device could
     * then immediately dispatch this state via a partial result to
     * the application, and the rest of the metadata via later
     * partial results.</p>
     * <p><b>Range of valid values:</b><br>
     * &gt;= 1</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     */
    @PublicKey
    public static final Key<Integer> REQUEST_PARTIAL_RESULT_COUNT =
            new Key<Integer>("android.request.partialResultCount", int.class);

    
List of capabilities that this camera device
advertises as fully supporting.


A capability is a contract that the camera device makes in order
to be able to satisfy one or more use cases.


Listing a capability guarantees that the whole set of features
required to support a common use will all be available.


Using a subset of the functionality provided by an unsupported
capability may be possible on a specific camera device implementation;
to do this query each of android.request.availableRequestKeys,
android.request.availableResultKeys,
android.request.availableCharacteristicsKeys.


The following capabilities are guaranteed to be available on android.info.supportedHardwareLevel == FULL devices:


    

  • MANUAL_SENSOR
    • 

  • MANUAL_POST_PROCESSING
    • 



Other capabilities may be available on either FULL or LIMITED
devices, but the application should query this key to be sure.


Possible values:



This key is available on all devices.


See Also:
/**
     * <p>List of capabilities that this camera device
     * advertises as fully supporting.</p>
     * <p>A capability is a contract that the camera device makes in order
     * to be able to satisfy one or more use cases.</p>
     * <p>Listing a capability guarantees that the whole set of features
     * required to support a common use will all be available.</p>
     * <p>Using a subset of the functionality provided by an unsupported
     * capability may be possible on a specific camera device implementation;
     * to do this query each of android.request.availableRequestKeys,
     * android.request.availableResultKeys,
     * android.request.availableCharacteristicsKeys.</p>
     * <p>The following capabilities are guaranteed to be available on
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} <code>==</code> FULL devices:</p>
     * <ul>
     * <li>MANUAL_SENSOR</li>
     * <li>MANUAL_POST_PROCESSING</li>
     * </ul>
     * <p>Other capabilities may be available on either FULL or LIMITED
     * devices, but the application should query this key to be sure.</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE BACKWARD_COMPATIBLE}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR MANUAL_SENSOR}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING MANUAL_POST_PROCESSING}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_RAW RAW}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_PRIVATE_REPROCESSING PRIVATE_REPROCESSING}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS READ_SENSOR_SETTINGS}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE BURST_CAPTURE}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING YUV_REPROCESSING}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT DEPTH_OUTPUT}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_CONSTRAINED_HIGH_SPEED_VIDEO CONSTRAINED_HIGH_SPEED_VIDEO}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_MOTION_TRACKING MOTION_TRACKING}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA LOGICAL_MULTI_CAMERA}</li>
     *   <li>{@link #REQUEST_AVAILABLE_CAPABILITIES_MONOCHROME MONOCHROME}</li>
     * </ul></p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see #REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE
     * @see #REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR
     * @see #REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING
     * @see #REQUEST_AVAILABLE_CAPABILITIES_RAW
     * @see #REQUEST_AVAILABLE_CAPABILITIES_PRIVATE_REPROCESSING
     * @see #REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS
     * @see #REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE
     * @see #REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING
     * @see #REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT
     * @see #REQUEST_AVAILABLE_CAPABILITIES_CONSTRAINED_HIGH_SPEED_VIDEO
     * @see #REQUEST_AVAILABLE_CAPABILITIES_MOTION_TRACKING
     * @see #REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA
     * @see #REQUEST_AVAILABLE_CAPABILITIES_MONOCHROME
     */
    @PublicKey
    public static final Key<int[]> REQUEST_AVAILABLE_CAPABILITIES =
            new Key<int[]>("android.request.availableCapabilities", int[].class);

    
A list of all keys that the camera device has available to use with CaptureRequest.


Attempting to set a key into a CaptureRequest that is not
listed here will result in an invalid request and will be rejected
by the camera device.


This field can be used to query the feature set of a camera device at a more granular level than capabilities. This is especially important for optional keys that are not listed under any capability in android.request.availableCapabilities.


This key is available on all devices.


See Also:
@hide
/**
     * <p>A list of all keys that the camera device has available
     * to use with {@link android.hardware.camera2.CaptureRequest }.</p>
     * <p>Attempting to set a key into a CaptureRequest that is not
     * listed here will result in an invalid request and will be rejected
     * by the camera device.</p>
     * <p>This field can be used to query the feature set of a camera device
     * at a more granular level than capabilities. This is especially
     * important for optional keys that are not listed under any capability
     * in {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
     * @hide
     */
    public static final Key<int[]> REQUEST_AVAILABLE_REQUEST_KEYS =
            new Key<int[]>("android.request.availableRequestKeys", int[].class);

    
A list of all keys that the camera device has available to use with CaptureResult.


Attempting to get a key from a CaptureResult that is not
listed here will always return a null value. Getting a key from
a CaptureResult that is listed here will generally never return a null
value.


The following keys may return null unless they are enabled:



(Those sometimes-null keys will nevertheless be listed here
if they are available.)


This field can be used to query the feature set of a camera device at a more granular level than capabilities. This is especially important for optional keys that are not listed under any capability in android.request.availableCapabilities.


This key is available on all devices.


See Also:
@hide
/**
     * <p>A list of all keys that the camera device has available to use with {@link android.hardware.camera2.CaptureResult }.</p>
     * <p>Attempting to get a key from a CaptureResult that is not
     * listed here will always return a <code>null</code> value. Getting a key from
     * a CaptureResult that is listed here will generally never return a <code>null</code>
     * value.</p>
     * <p>The following keys may return <code>null</code> unless they are enabled:</p>
     * <ul>
     * <li>android.statistics.lensShadingMap (non-null iff {@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode} == ON)</li>
     * </ul>
     * <p>(Those sometimes-null keys will nevertheless be listed here
     * if they are available.)</p>
     * <p>This field can be used to query the feature set of a camera device
     * at a more granular level than capabilities. This is especially
     * important for optional keys that are not listed under any capability
     * in {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
     * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
     * @hide
     */
    public static final Key<int[]> REQUEST_AVAILABLE_RESULT_KEYS =
            new Key<int[]>("android.request.availableResultKeys", int[].class);

    
A list of all keys that the camera device has available to use with CameraCharacteristics.


This entry follows the same rules as
android.request.availableResultKeys (except that it applies for
CameraCharacteristics instead of CaptureResult). See above for more
details.


This key is available on all devices.


@hide
/**
     * <p>A list of all keys that the camera device has available to use with {@link android.hardware.camera2.CameraCharacteristics }.</p>
     * <p>This entry follows the same rules as
     * android.request.availableResultKeys (except that it applies for
     * CameraCharacteristics instead of CaptureResult). See above for more
     * details.</p>
     * <p>This key is available on all devices.</p>
     * @hide
     */
    public static final Key<int[]> REQUEST_AVAILABLE_CHARACTERISTICS_KEYS =
            new Key<int[]>("android.request.availableCharacteristicsKeys", int[].class);

    
A subset of the available request keys that the camera device
can pass as part of the capture session initialization.


This is a subset of android.request.availableRequestKeys which contains a list of keys that are difficult to apply per-frame and can result in unexpected delays when modified during the capture session lifetime. Typical examples include parameters that require a time-consuming hardware re-configuration or internal camera pipeline change. For performance reasons we advise clients to pass their initial values as part of SessionConfiguration.setSessionParameters. Once the camera capture session is enabled it is also recommended to avoid changing them from their initial values set in SessionConfiguration.setSessionParameters. Control over session parameters can still be exerted in capture requests but clients should be aware and expect delays during their application. An example usage scenario could look like this:


    

  • The camera client starts by quering the session parameter key list via getAvailableSessionKeys.
    • 

  • Before triggering the capture session create sequence, a capture request must be built via CameraDevice.createCaptureRequest using an appropriate template matching the particular use case.
    • 

  • The client should go over the list of session parameters and check
  whether some of the keys listed matches with the parameters that
  they intend to modify as part of the first capture request.
    • 

  • If there is no such match, the capture request can be passed unmodified to SessionConfiguration.setSessionParameters.
    • 

  • If matches do exist, the client should update the respective values and pass the request to SessionConfiguration.setSessionParameters.
    • 

  • After the capture session initialization completes the session parameter
  key list can continue to serve as reference when posting or updating
  further requests. As mentioned above further changes to session
  parameters should ideally be avoided, if updates are necessary
  however clients could expect a delay/glitch during the
  parameter switch.
    • 



This key is available on all devices.


@hide
/**
     * <p>A subset of the available request keys that the camera device
     * can pass as part of the capture session initialization.</p>
     * <p>This is a subset of android.request.availableRequestKeys which
     * contains a list of keys that are difficult to apply per-frame and
     * can result in unexpected delays when modified during the capture session
     * lifetime. Typical examples include parameters that require a
     * time-consuming hardware re-configuration or internal camera pipeline
     * change. For performance reasons we advise clients to pass their initial
     * values as part of
     * {@link SessionConfiguration#setSessionParameters }.
     * Once the camera capture session is enabled it is also recommended to avoid
     * changing them from their initial values set in
     * {@link SessionConfiguration#setSessionParameters }.
     * Control over session parameters can still be exerted in capture requests
     * but clients should be aware and expect delays during their application.
     * An example usage scenario could look like this:</p>
     * <ul>
     * <li>The camera client starts by quering the session parameter key list via
     *   {@link android.hardware.camera2.CameraCharacteristics#getAvailableSessionKeys }.</li>
     * <li>Before triggering the capture session create sequence, a capture request
     *   must be built via
     *   {@link CameraDevice#createCaptureRequest }
     *   using an appropriate template matching the particular use case.</li>
     * <li>The client should go over the list of session parameters and check
     *   whether some of the keys listed matches with the parameters that
     *   they intend to modify as part of the first capture request.</li>
     * <li>If there is no such match, the capture request can be  passed
     *   unmodified to
     *   {@link SessionConfiguration#setSessionParameters }.</li>
     * <li>If matches do exist, the client should update the respective values
     *   and pass the request to
     *   {@link SessionConfiguration#setSessionParameters }.</li>
     * <li>After the capture session initialization completes the session parameter
     *   key list can continue to serve as reference when posting or updating
     *   further requests. As mentioned above further changes to session
     *   parameters should ideally be avoided, if updates are necessary
     *   however clients could expect a delay/glitch during the
     *   parameter switch.</li>
     * </ul>
     * <p>This key is available on all devices.</p>
     * @hide
     */
    public static final Key<int[]> REQUEST_AVAILABLE_SESSION_KEYS =
            new Key<int[]>("android.request.availableSessionKeys", int[].class);

    
A subset of the available request keys that can be overridden for
physical devices backing a logical multi-camera.


This is a subset of android.request.availableRequestKeys which contains a list of keys that can be overridden using Builder.setPhysicalCameraKey. The respective value of such request key can be obtained by calling Builder.getPhysicalCameraKey. Capture requests that contain individual physical device requests must be built via CameraDevice.createCaptureRequest(int, Set<String>).


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
@hide
/**
     * <p>A subset of the available request keys that can be overridden for
     * physical devices backing a logical multi-camera.</p>
     * <p>This is a subset of android.request.availableRequestKeys which contains a list
     * of keys that can be overridden using {@link CaptureRequest.Builder#setPhysicalCameraKey }.
     * The respective value of such request key can be obtained by calling
     * {@link CaptureRequest.Builder#getPhysicalCameraKey }. Capture requests that contain
     * individual physical device requests must be built via
     * {@link android.hardware.camera2.CameraDevice#createCaptureRequest(int, Set)}.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @hide
     */
    public static final Key<int[]> REQUEST_AVAILABLE_PHYSICAL_CAMERA_REQUEST_KEYS =
            new Key<int[]>("android.request.availablePhysicalCameraRequestKeys", int[].class);

    
The list of image formats that are supported by this
camera device for output streams.


All camera devices will support JPEG and YUV_420_888 formats.


When set to YUV_420_888, application can access the YUV420 data directly.


Optional - This value may be null on some devices.


Deprecated:

Not used in HALv3 or newer
@hide
/**
     * <p>The list of image formats that are supported by this
     * camera device for output streams.</p>
     * <p>All camera devices will support JPEG and YUV_420_888 formats.</p>
     * <p>When set to YUV_420_888, application can access the YUV420 data directly.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * @deprecated
     * <p>Not used in HALv3 or newer</p>

     * @hide
     */
    @Deprecated
    public static final Key<int[]> SCALER_AVAILABLE_FORMATS =
            new Key<int[]>("android.scaler.availableFormats", int[].class);

    
The minimum frame duration that is supported
for each resolution in android.scaler.availableJpegSizes.


This corresponds to the minimum steady-state frame duration when only
that JPEG stream is active and captured in a burst, with all
processing (typically in android.*.mode) set to FAST.


When multiple streams are configured, the minimum
frame duration will be >= max(individual stream min
durations)


Units: Nanoseconds


Range of valid values:

TODO: Remove property.


Optional - This value may be null on some devices.


Deprecated:

Not used in HALv3 or newer
@hide
/**
     * <p>The minimum frame duration that is supported
     * for each resolution in android.scaler.availableJpegSizes.</p>
     * <p>This corresponds to the minimum steady-state frame duration when only
     * that JPEG stream is active and captured in a burst, with all
     * processing (typically in android.*.mode) set to FAST.</p>
     * <p>When multiple streams are configured, the minimum
     * frame duration will be &gt;= max(individual stream min
     * durations)</p>
     * <p><b>Units</b>: Nanoseconds</p>
     * <p><b>Range of valid values:</b><br>
     * TODO: Remove property.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * @deprecated
     * <p>Not used in HALv3 or newer</p>

     * @hide
     */
    @Deprecated
    public static final Key<long[]> SCALER_AVAILABLE_JPEG_MIN_DURATIONS =
            new Key<long[]>("android.scaler.availableJpegMinDurations", long[].class);

    
The JPEG resolutions that are supported by this camera device.


The resolutions are listed as (width, height) pairs. All camera devices will support sensor maximum resolution (defined by android.sensor.info.activeArraySize).


Range of valid values:

TODO: Remove property.


Optional - This value may be null on some devices.


See Also:
Deprecated:

Not used in HALv3 or newer
@hide
/**
     * <p>The JPEG resolutions that are supported by this camera device.</p>
     * <p>The resolutions are listed as <code>(width, height)</code> pairs. All camera devices will support
     * sensor maximum resolution (defined by {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}).</p>
     * <p><b>Range of valid values:</b><br>
     * TODO: Remove property.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
     * @deprecated
     * <p>Not used in HALv3 or newer</p>

     * @hide
     */
    @Deprecated
    public static final Key<android.util.Size[]> SCALER_AVAILABLE_JPEG_SIZES =
            new Key<android.util.Size[]>("android.scaler.availableJpegSizes", android.util.Size[].class);

    
The maximum ratio between both active area width and crop region width, and active area height and crop region height, for android.scaler.cropRegion.


This represents the maximum amount of zooming possible by
the camera device, or equivalently, the minimum cropping
window size.


Crop regions that have a width or height that is smaller
than this ratio allows will be rounded up to the minimum
allowed size by the camera device.


Units: Zoom scale factor


Range of valid values:

>=1


This key is available on all devices.


See Also:
/**
     * <p>The maximum ratio between both active area width
     * and crop region width, and active area height and
     * crop region height, for {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}.</p>
     * <p>This represents the maximum amount of zooming possible by
     * the camera device, or equivalently, the minimum cropping
     * window size.</p>
     * <p>Crop regions that have a width or height that is smaller
     * than this ratio allows will be rounded up to the minimum
     * allowed size by the camera device.</p>
     * <p><b>Units</b>: Zoom scale factor</p>
     * <p><b>Range of valid values:</b><br>
     * &gt;=1</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#SCALER_CROP_REGION
     */
    @PublicKey
    public static final Key<Float> SCALER_AVAILABLE_MAX_DIGITAL_ZOOM =
            new Key<Float>("android.scaler.availableMaxDigitalZoom", float.class);

    
For each available processed output size (defined in
android.scaler.availableProcessedSizes), this property lists the
minimum supportable frame duration for that size.


This should correspond to the frame duration when only that processed
stream is active, with all processing (typically in android.*.mode)
set to FAST.


When multiple streams are configured, the minimum frame duration will
be >= max(individual stream min durations).


Units: Nanoseconds


Optional - This value may be null on some devices.


Deprecated:

Not used in HALv3 or newer
@hide
/**
     * <p>For each available processed output size (defined in
     * android.scaler.availableProcessedSizes), this property lists the
     * minimum supportable frame duration for that size.</p>
     * <p>This should correspond to the frame duration when only that processed
     * stream is active, with all processing (typically in android.*.mode)
     * set to FAST.</p>
     * <p>When multiple streams are configured, the minimum frame duration will
     * be &gt;= max(individual stream min durations).</p>
     * <p><b>Units</b>: Nanoseconds</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * @deprecated
     * <p>Not used in HALv3 or newer</p>

     * @hide
     */
    @Deprecated
    public static final Key<long[]> SCALER_AVAILABLE_PROCESSED_MIN_DURATIONS =
            new Key<long[]>("android.scaler.availableProcessedMinDurations", long[].class);

    
The resolutions available for use with
processed output streams, such as YV12, NV12, and
platform opaque YUV/RGB streams to the GPU or video
encoders.


The resolutions are listed as (width, height) pairs.


For a given use case, the actual maximum supported resolution
may be lower than what is listed here, depending on the destination
Surface for the image data. For example, for recording video,
the video encoder chosen may have a maximum size limit (e.g. 1080p)
smaller than what the camera (e.g. maximum resolution is 3264x2448)
can provide.


Please reference the documentation for the image data destination to
check if it limits the maximum size for image data.


Optional - This value may be null on some devices.


Deprecated:

Not used in HALv3 or newer
@hide
/**
     * <p>The resolutions available for use with
     * processed output streams, such as YV12, NV12, and
     * platform opaque YUV/RGB streams to the GPU or video
     * encoders.</p>
     * <p>The resolutions are listed as <code>(width, height)</code> pairs.</p>
     * <p>For a given use case, the actual maximum supported resolution
     * may be lower than what is listed here, depending on the destination
     * Surface for the image data. For example, for recording video,
     * the video encoder chosen may have a maximum size limit (e.g. 1080p)
     * smaller than what the camera (e.g. maximum resolution is 3264x2448)
     * can provide.</p>
     * <p>Please reference the documentation for the image data destination to
     * check if it limits the maximum size for image data.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * @deprecated
     * <p>Not used in HALv3 or newer</p>

     * @hide
     */
    @Deprecated
    public static final Key<android.util.Size[]> SCALER_AVAILABLE_PROCESSED_SIZES =
            new Key<android.util.Size[]>("android.scaler.availableProcessedSizes", android.util.Size[].class);

    
The mapping of image formats that are supported by this
camera device for input streams, to their corresponding output formats.


All camera devices with at least 1 android.request.maxNumInputStreams will have at least one available input format.


The camera device will support the following map of formats, if its dependent capability (android.request.availableCapabilities) is supported:






Input Format
Output Format
Capability






ImageFormat.PRIVATE
ImageFormat.JPEG
PRIVATE_REPROCESSING




ImageFormat.PRIVATE
ImageFormat.YUV_420_888
PRIVATE_REPROCESSING




ImageFormat.YUV_420_888
ImageFormat.JPEG
YUV_REPROCESSING




ImageFormat.YUV_420_888
ImageFormat.YUV_420_888
YUV_REPROCESSING






PRIVATE refers to a device-internal format that is not directly application-visible. A PRIVATE input surface can be acquired by ImageReader.newInstance with ImageFormat.PRIVATE as the format.


For a PRIVATE_REPROCESSING-capable camera device, using the PRIVATE format as either input or output will never hurt maximum frame rate (i.e. getOutputStallDuration(ImageFormat.PRIVATE, size) is always 0),


Attempting to configure an input stream with output streams not
listed as available in this map is not valid.


Optional - This value may be null on some devices.


See Also:
@hide
/**
     * <p>The mapping of image formats that are supported by this
     * camera device for input streams, to their corresponding output formats.</p>
     * <p>All camera devices with at least 1
     * {@link CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS android.request.maxNumInputStreams} will have at least one
     * available input format.</p>
     * <p>The camera device will support the following map of formats,
     * if its dependent capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}) is supported:</p>
     * <table>
     * <thead>
     * <tr>
     * <th align="left">Input Format</th>
     * <th align="left">Output Format</th>
     * <th align="left">Capability</th>
     * </tr>
     * </thead>
     * <tbody>
     * <tr>
     * <td align="left">{@link android.graphics.ImageFormat#PRIVATE }</td>
     * <td align="left">{@link android.graphics.ImageFormat#JPEG }</td>
     * <td align="left">PRIVATE_REPROCESSING</td>
     * </tr>
     * <tr>
     * <td align="left">{@link android.graphics.ImageFormat#PRIVATE }</td>
     * <td align="left">{@link android.graphics.ImageFormat#YUV_420_888 }</td>
     * <td align="left">PRIVATE_REPROCESSING</td>
     * </tr>
     * <tr>
     * <td align="left">{@link android.graphics.ImageFormat#YUV_420_888 }</td>
     * <td align="left">{@link android.graphics.ImageFormat#JPEG }</td>
     * <td align="left">YUV_REPROCESSING</td>
     * </tr>
     * <tr>
     * <td align="left">{@link android.graphics.ImageFormat#YUV_420_888 }</td>
     * <td align="left">{@link android.graphics.ImageFormat#YUV_420_888 }</td>
     * <td align="left">YUV_REPROCESSING</td>
     * </tr>
     * </tbody>
     * </table>
     * <p>PRIVATE refers to a device-internal format that is not directly application-visible.  A
     * PRIVATE input surface can be acquired by {@link android.media.ImageReader#newInstance }
     * with {@link android.graphics.ImageFormat#PRIVATE } as the format.</p>
     * <p>For a PRIVATE_REPROCESSING-capable camera device, using the PRIVATE format as either input
     * or output will never hurt maximum frame rate (i.e.  {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration getOutputStallDuration(ImageFormat.PRIVATE, size)} is always 0),</p>
     * <p>Attempting to configure an input stream with output streams not
     * listed as available in this map is not valid.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
     * @see CameraCharacteristics#REQUEST_MAX_NUM_INPUT_STREAMS
     * @hide
     */
    public static final Key<android.hardware.camera2.params.ReprocessFormatsMap> SCALER_AVAILABLE_INPUT_OUTPUT_FORMATS_MAP =
            new Key<android.hardware.camera2.params.ReprocessFormatsMap>("android.scaler.availableInputOutputFormatsMap", android.hardware.camera2.params.ReprocessFormatsMap.class);

    
The available stream configurations that this
camera device supports
(i.e. format, width, height, output/input stream).


The configurations are listed as (format, width, height, input?)
tuples.


For a given use case, the actual maximum supported resolution
may be lower than what is listed here, depending on the destination
Surface for the image data. For example, for recording video,
the video encoder chosen may have a maximum size limit (e.g. 1080p)
smaller than what the camera (e.g. maximum resolution is 3264x2448)
can provide.


Please reference the documentation for the image data destination to
check if it limits the maximum size for image data.


Not all output formats may be supported in a configuration with
an input stream of a particular format. For more details, see
android.scaler.availableInputOutputFormatsMap.


The following table describes the minimum required output stream configurations based on the hardware level (android.info.supportedHardwareLevel):






Format
Size
Hardware Level
Notes






JPEG
android.sensor.info.activeArraySize
Any





JPEG
1920x1080 (1080p)
Any
if 1080p <= activeArraySize




JPEG
1280x720 (720)
Any
if 720p <= activeArraySize




JPEG
640x480 (480p)
Any
if 480p <= activeArraySize




JPEG
320x240 (240p)
Any
if 240p <= activeArraySize




YUV_420_888
all output sizes available for JPEG
FULL





YUV_420_888
all output sizes available for JPEG, up to the maximum video size
LIMITED





IMPLEMENTATION_DEFINED
same as YUV_420_888
Any







Refer to android.request.availableCapabilities for additional mandatory stream configurations on a per-capability basis.


This key is available on all devices.


See Also:
@hide
/**
     * <p>The available stream configurations that this
     * camera device supports
     * (i.e. format, width, height, output/input stream).</p>
     * <p>The configurations are listed as <code>(format, width, height, input?)</code>
     * tuples.</p>
     * <p>For a given use case, the actual maximum supported resolution
     * may be lower than what is listed here, depending on the destination
     * Surface for the image data. For example, for recording video,
     * the video encoder chosen may have a maximum size limit (e.g. 1080p)
     * smaller than what the camera (e.g. maximum resolution is 3264x2448)
     * can provide.</p>
     * <p>Please reference the documentation for the image data destination to
     * check if it limits the maximum size for image data.</p>
     * <p>Not all output formats may be supported in a configuration with
     * an input stream of a particular format. For more details, see
     * android.scaler.availableInputOutputFormatsMap.</p>
     * <p>The following table describes the minimum required output stream
     * configurations based on the hardware level
     * ({@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel}):</p>
     * <table>
     * <thead>
     * <tr>
     * <th align="center">Format</th>
     * <th align="center">Size</th>
     * <th align="center">Hardware Level</th>
     * <th align="center">Notes</th>
     * </tr>
     * </thead>
     * <tbody>
     * <tr>
     * <td align="center">JPEG</td>
     * <td align="center">{@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</td>
     * <td align="center">Any</td>
     * <td align="center"></td>
     * </tr>
     * <tr>
     * <td align="center">JPEG</td>
     * <td align="center">1920x1080 (1080p)</td>
     * <td align="center">Any</td>
     * <td align="center">if 1080p &lt;= activeArraySize</td>
     * </tr>
     * <tr>
     * <td align="center">JPEG</td>
     * <td align="center">1280x720 (720)</td>
     * <td align="center">Any</td>
     * <td align="center">if 720p &lt;= activeArraySize</td>
     * </tr>
     * <tr>
     * <td align="center">JPEG</td>
     * <td align="center">640x480 (480p)</td>
     * <td align="center">Any</td>
     * <td align="center">if 480p &lt;= activeArraySize</td>
     * </tr>
     * <tr>
     * <td align="center">JPEG</td>
     * <td align="center">320x240 (240p)</td>
     * <td align="center">Any</td>
     * <td align="center">if 240p &lt;= activeArraySize</td>
     * </tr>
     * <tr>
     * <td align="center">YUV_420_888</td>
     * <td align="center">all output sizes available for JPEG</td>
     * <td align="center">FULL</td>
     * <td align="center"></td>
     * </tr>
     * <tr>
     * <td align="center">YUV_420_888</td>
     * <td align="center">all output sizes available for JPEG, up to the maximum video size</td>
     * <td align="center">LIMITED</td>
     * <td align="center"></td>
     * </tr>
     * <tr>
     * <td align="center">IMPLEMENTATION_DEFINED</td>
     * <td align="center">same as YUV_420_888</td>
     * <td align="center">Any</td>
     * <td align="center"></td>
     * </tr>
     * </tbody>
     * </table>
     * <p>Refer to {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} for additional
     * mandatory stream configurations on a per-capability basis.</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
     * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
     * @hide
     */
    public static final Key<android.hardware.camera2.params.StreamConfiguration[]> SCALER_AVAILABLE_STREAM_CONFIGURATIONS =
            new Key<android.hardware.camera2.params.StreamConfiguration[]>("android.scaler.availableStreamConfigurations", android.hardware.camera2.params.StreamConfiguration[].class);

    
This lists the minimum frame duration for each
format/size combination.


This should correspond to the frame duration when only that
stream is active, with all processing (typically in android.*.mode)
set to either OFF or FAST.


When multiple streams are used in a request, the minimum frame
duration will be max(individual stream min durations).


The minimum frame duration of a stream (of a particular format, size)
is the same regardless of whether the stream is input or output.


See android.sensor.frameDuration and android.scaler.availableStallDurations for more details about calculating the max frame rate.


Units: (format, width, height, ns) x n


This key is available on all devices.


See Also:
@hide
/**
     * <p>This lists the minimum frame duration for each
     * format/size combination.</p>
     * <p>This should correspond to the frame duration when only that
     * stream is active, with all processing (typically in android.*.mode)
     * set to either OFF or FAST.</p>
     * <p>When multiple streams are used in a request, the minimum frame
     * duration will be max(individual stream min durations).</p>
     * <p>The minimum frame duration of a stream (of a particular format, size)
     * is the same regardless of whether the stream is input or output.</p>
     * <p>See {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} and
     * android.scaler.availableStallDurations for more details about
     * calculating the max frame rate.</p>
     * <p><b>Units</b>: (format, width, height, ns) x n</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#SENSOR_FRAME_DURATION
     * @hide
     */
    public static final Key<android.hardware.camera2.params.StreamConfigurationDuration[]> SCALER_AVAILABLE_MIN_FRAME_DURATIONS =
            new Key<android.hardware.camera2.params.StreamConfigurationDuration[]>("android.scaler.availableMinFrameDurations", android.hardware.camera2.params.StreamConfigurationDuration[].class);

    
This lists the maximum stall duration for each
output format/size combination.


A stall duration is how much extra time would get added
to the normal minimum frame duration for a repeating request
that has streams with non-zero stall.


For example, consider JPEG captures which have the following
characteristics:


    

  • JPEG streams act like processed YUV streams in requests for which
they are not included; in requests in which they are directly
referenced, they act as JPEG streams. This is because supporting a
JPEG stream requires the underlying YUV data to always be ready for
use by a JPEG encoder, but the encoder will only be used (and impact
frame duration) on requests that actually reference a JPEG stream.
    • 

  • The JPEG processor can run concurrently to the rest of the camera
pipeline, but cannot process more than 1 capture at a time.
    • 



In other words, using a repeating YUV request would result
in a steady frame rate (let's say it's 30 FPS). If a single
JPEG request is submitted periodically, the frame rate will stay
at 30 FPS (as long as we wait for the previous JPEG to return each
time). If we try to submit a repeating YUV + JPEG request, then
the frame rate will drop from 30 FPS.


In general, submitting a new request with a non-0 stall time
stream will not cause a frame rate drop unless there are still
outstanding buffers for that stream from previous requests.


Submitting a repeating request with streams (call this S)
is the same as setting the minimum frame duration from
the normal minimum frame duration corresponding to S, added with
the maximum stall duration for S.


If interleaving requests with and without a stall duration,
a request will stall by the maximum of the remaining times
for each can-stall stream with outstanding buffers.


This means that a stalling request will not have an exposure start
until the stall has completed.


This should correspond to the stall duration when only that stream is
active, with all processing (typically in android.*.mode) set to FAST
or OFF. Setting any of the processing modes to HIGH_QUALITY
effectively results in an indeterminate stall duration for all
streams in a request (the regular stall calculation rules are
ignored).


The following formats may always have a stall duration:



The following formats will never have a stall duration:



All other formats may or may not have an allowed stall duration on a per-capability basis; refer to android.request.availableCapabilities for more details.


See android.sensor.frameDuration for more information about calculating the max frame rate (absent stalls).


Units: (format, width, height, ns) x n


This key is available on all devices.


See Also:
@hide
/**
     * <p>This lists the maximum stall duration for each
     * output format/size combination.</p>
     * <p>A stall duration is how much extra time would get added
     * to the normal minimum frame duration for a repeating request
     * that has streams with non-zero stall.</p>
     * <p>For example, consider JPEG captures which have the following
     * characteristics:</p>
     * <ul>
     * <li>JPEG streams act like processed YUV streams in requests for which
     * they are not included; in requests in which they are directly
     * referenced, they act as JPEG streams. This is because supporting a
     * JPEG stream requires the underlying YUV data to always be ready for
     * use by a JPEG encoder, but the encoder will only be used (and impact
     * frame duration) on requests that actually reference a JPEG stream.</li>
     * <li>The JPEG processor can run concurrently to the rest of the camera
     * pipeline, but cannot process more than 1 capture at a time.</li>
     * </ul>
     * <p>In other words, using a repeating YUV request would result
     * in a steady frame rate (let's say it's 30 FPS). If a single
     * JPEG request is submitted periodically, the frame rate will stay
     * at 30 FPS (as long as we wait for the previous JPEG to return each
     * time). If we try to submit a repeating YUV + JPEG request, then
     * the frame rate will drop from 30 FPS.</p>
     * <p>In general, submitting a new request with a non-0 stall time
     * stream will <em>not</em> cause a frame rate drop unless there are still
     * outstanding buffers for that stream from previous requests.</p>
     * <p>Submitting a repeating request with streams (call this <code>S</code>)
     * is the same as setting the minimum frame duration from
     * the normal minimum frame duration corresponding to <code>S</code>, added with
     * the maximum stall duration for <code>S</code>.</p>
     * <p>If interleaving requests with and without a stall duration,
     * a request will stall by the maximum of the remaining times
     * for each can-stall stream with outstanding buffers.</p>
     * <p>This means that a stalling request will not have an exposure start
     * until the stall has completed.</p>
     * <p>This should correspond to the stall duration when only that stream is
     * active, with all processing (typically in android.*.mode) set to FAST
     * or OFF. Setting any of the processing modes to HIGH_QUALITY
     * effectively results in an indeterminate stall duration for all
     * streams in a request (the regular stall calculation rules are
     * ignored).</p>
     * <p>The following formats may always have a stall duration:</p>
     * <ul>
     * <li>{@link android.graphics.ImageFormat#JPEG }</li>
     * <li>{@link android.graphics.ImageFormat#RAW_SENSOR }</li>
     * </ul>
     * <p>The following formats will never have a stall duration:</p>
     * <ul>
     * <li>{@link android.graphics.ImageFormat#YUV_420_888 }</li>
     * <li>{@link android.graphics.ImageFormat#RAW10 }</li>
     * <li>{@link android.graphics.ImageFormat#RAW12 }</li>
     * </ul>
     * <p>All other formats may or may not have an allowed stall duration on
     * a per-capability basis; refer to {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}
     * for more details.</p>
     * <p>See {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} for more information about
     * calculating the max frame rate (absent stalls).</p>
     * <p><b>Units</b>: (format, width, height, ns) x n</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
     * @see CaptureRequest#SENSOR_FRAME_DURATION
     * @hide
     */
    public static final Key<android.hardware.camera2.params.StreamConfigurationDuration[]> SCALER_AVAILABLE_STALL_DURATIONS =
            new Key<android.hardware.camera2.params.StreamConfigurationDuration[]>("android.scaler.availableStallDurations", android.hardware.camera2.params.StreamConfigurationDuration[].class);

    
The available stream configurations that this
camera device supports; also includes the minimum frame durations
and the stall durations for each format/size combination.


All camera devices will support sensor maximum resolution (defined by android.sensor.info.activeArraySize) for the JPEG format.


For a given use case, the actual maximum supported resolution
may be lower than what is listed here, depending on the destination
Surface for the image data. For example, for recording video,
the video encoder chosen may have a maximum size limit (e.g. 1080p)
smaller than what the camera (e.g. maximum resolution is 3264x2448)
can provide.


Please reference the documentation for the image data destination to
check if it limits the maximum size for image data.


The following table describes the minimum required output stream configurations based on the hardware level (android.info.supportedHardwareLevel):






Format
Size
Hardware Level
Notes






ImageFormat.JPEG
android.sensor.info.activeArraySize (*1)
Any





ImageFormat.JPEG
1920x1080 (1080p)
Any
if 1080p <= activeArraySize




ImageFormat.JPEG
1280x720 (720p)
Any
if 720p <= activeArraySize




ImageFormat.JPEG
640x480 (480p)
Any
if 480p <= activeArraySize




ImageFormat.JPEG
320x240 (240p)
Any
if 240p <= activeArraySize




ImageFormat.YUV_420_888
all output sizes available for JPEG
FULL





ImageFormat.YUV_420_888
all output sizes available for JPEG, up to the maximum video size
LIMITED





ImageFormat.PRIVATE
same as YUV_420_888
Any







Refer to android.request.availableCapabilities and CameraDevice.createCaptureSession for additional mandatory stream configurations on a per-capability basis.


*1: For JPEG format, the sizes may be restricted by below conditions:


    

  • The HAL may choose the aspect ratio of each Jpeg size to be one of well known ones (e.g. 4:3, 16:9, 3:2 etc.). If the sensor maximum resolution (defined by android.sensor.info.activeArraySize) has an aspect ratio other than these, it does not have to be included in the supported JPEG sizes.
    • 

  • Some hardware JPEG encoders may have pixel boundary alignment requirements, such as
the dimensions being a multiple of 16.
Therefore, the maximum JPEG size may be smaller than sensor maximum resolution.
However, the largest JPEG size will be as close as possible to the sensor maximum
resolution given above constraints. It is required that after aspect ratio adjustments,
additional size reduction due to other issues must be less than 3% in area. For example,
if the sensor maximum resolution is 3280x2464, if the maximum JPEG size has aspect
ratio 4:3, and the JPEG encoder alignment requirement is 16, the maximum JPEG size will be
3264x2448.
    • 



This key is available on all devices.


See Also:
/**
     * <p>The available stream configurations that this
     * camera device supports; also includes the minimum frame durations
     * and the stall durations for each format/size combination.</p>
     * <p>All camera devices will support sensor maximum resolution (defined by
     * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}) for the JPEG format.</p>
     * <p>For a given use case, the actual maximum supported resolution
     * may be lower than what is listed here, depending on the destination
     * Surface for the image data. For example, for recording video,
     * the video encoder chosen may have a maximum size limit (e.g. 1080p)
     * smaller than what the camera (e.g. maximum resolution is 3264x2448)
     * can provide.</p>
     * <p>Please reference the documentation for the image data destination to
     * check if it limits the maximum size for image data.</p>
     * <p>The following table describes the minimum required output stream
     * configurations based on the hardware level
     * ({@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel}):</p>
     * <table>
     * <thead>
     * <tr>
     * <th align="center">Format</th>
     * <th align="center">Size</th>
     * <th align="center">Hardware Level</th>
     * <th align="center">Notes</th>
     * </tr>
     * </thead>
     * <tbody>
     * <tr>
     * <td align="center">{@link android.graphics.ImageFormat#JPEG }</td>
     * <td align="center">{@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize} (*1)</td>
     * <td align="center">Any</td>
     * <td align="center"></td>
     * </tr>
     * <tr>
     * <td align="center">{@link android.graphics.ImageFormat#JPEG }</td>
     * <td align="center">1920x1080 (1080p)</td>
     * <td align="center">Any</td>
     * <td align="center">if 1080p &lt;= activeArraySize</td>
     * </tr>
     * <tr>
     * <td align="center">{@link android.graphics.ImageFormat#JPEG }</td>
     * <td align="center">1280x720 (720p)</td>
     * <td align="center">Any</td>
     * <td align="center">if 720p &lt;= activeArraySize</td>
     * </tr>
     * <tr>
     * <td align="center">{@link android.graphics.ImageFormat#JPEG }</td>
     * <td align="center">640x480 (480p)</td>
     * <td align="center">Any</td>
     * <td align="center">if 480p &lt;= activeArraySize</td>
     * </tr>
     * <tr>
     * <td align="center">{@link android.graphics.ImageFormat#JPEG }</td>
     * <td align="center">320x240 (240p)</td>
     * <td align="center">Any</td>
     * <td align="center">if 240p &lt;= activeArraySize</td>
     * </tr>
     * <tr>
     * <td align="center">{@link android.graphics.ImageFormat#YUV_420_888 }</td>
     * <td align="center">all output sizes available for JPEG</td>
     * <td align="center">FULL</td>
     * <td align="center"></td>
     * </tr>
     * <tr>
     * <td align="center">{@link android.graphics.ImageFormat#YUV_420_888 }</td>
     * <td align="center">all output sizes available for JPEG, up to the maximum video size</td>
     * <td align="center">LIMITED</td>
     * <td align="center"></td>
     * </tr>
     * <tr>
     * <td align="center">{@link android.graphics.ImageFormat#PRIVATE }</td>
     * <td align="center">same as YUV_420_888</td>
     * <td align="center">Any</td>
     * <td align="center"></td>
     * </tr>
     * </tbody>
     * </table>
     * <p>Refer to {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} and {@link android.hardware.camera2.CameraDevice#createCaptureSession } for additional mandatory
     * stream configurations on a per-capability basis.</p>
     * <p>*1: For JPEG format, the sizes may be restricted by below conditions:</p>
     * <ul>
     * <li>The HAL may choose the aspect ratio of each Jpeg size to be one of well known ones
     * (e.g. 4:3, 16:9, 3:2 etc.). If the sensor maximum resolution
     * (defined by {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}) has an aspect ratio other than these,
     * it does not have to be included in the supported JPEG sizes.</li>
     * <li>Some hardware JPEG encoders may have pixel boundary alignment requirements, such as
     * the dimensions being a multiple of 16.
     * Therefore, the maximum JPEG size may be smaller than sensor maximum resolution.
     * However, the largest JPEG size will be as close as possible to the sensor maximum
     * resolution given above constraints. It is required that after aspect ratio adjustments,
     * additional size reduction due to other issues must be less than 3% in area. For example,
     * if the sensor maximum resolution is 3280x2464, if the maximum JPEG size has aspect
     * ratio 4:3, and the JPEG encoder alignment requirement is 16, the maximum JPEG size will be
     * 3264x2448.</li>
     * </ul>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
     * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
     */
    @PublicKey
    @SyntheticKey
    public static final Key<android.hardware.camera2.params.StreamConfigurationMap> SCALER_STREAM_CONFIGURATION_MAP =
            new Key<android.hardware.camera2.params.StreamConfigurationMap>("android.scaler.streamConfigurationMap", android.hardware.camera2.params.StreamConfigurationMap.class);

    
The crop type that this camera device supports.


When passing a non-centered crop region (android.scaler.cropRegion) to a camera device that only supports CENTER_ONLY cropping, the camera device will move the crop region to the center of the sensor active array (android.sensor.info.activeArraySize) and keep the crop region width and height unchanged. The camera device will return the final used crop region in metadata result android.scaler.cropRegion.


Camera devices that support FREEFORM cropping will support any crop region that is inside of the active array. The camera device will apply the same crop region and return the final used crop region in capture result metadata android.scaler.cropRegion.


LEGACY capability devices will only support CENTER_ONLY cropping.


Possible values:



This key is available on all devices.


See Also:
/**
     * <p>The crop type that this camera device supports.</p>
     * <p>When passing a non-centered crop region ({@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}) to a camera
     * device that only supports CENTER_ONLY cropping, the camera device will move the
     * crop region to the center of the sensor active array ({@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize})
     * and keep the crop region width and height unchanged. The camera device will return the
     * final used crop region in metadata result {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}.</p>
     * <p>Camera devices that support FREEFORM cropping will support any crop region that
     * is inside of the active array. The camera device will apply the same crop region and
     * return the final used crop region in capture result metadata {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}.</p>
     * <p>LEGACY capability devices will only support CENTER_ONLY cropping.</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #SCALER_CROPPING_TYPE_CENTER_ONLY CENTER_ONLY}</li>
     *   <li>{@link #SCALER_CROPPING_TYPE_FREEFORM FREEFORM}</li>
     * </ul></p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#SCALER_CROP_REGION
     * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
     * @see #SCALER_CROPPING_TYPE_CENTER_ONLY
     * @see #SCALER_CROPPING_TYPE_FREEFORM
     */
    @PublicKey
    public static final Key<Integer> SCALER_CROPPING_TYPE =
            new Key<Integer>("android.scaler.croppingType", int.class);

    
The area of the image sensor which corresponds to active pixels after any geometric
distortion correction has been applied.


This is the rectangle representing the size of the active region of the sensor (i.e.
the region that actually receives light from the scene) after any geometric correction
has been applied, and should be treated as the maximum size in pixels of any of the
image output formats aside from the raw formats.


This rectangle is defined relative to the full pixel array; (0,0) is the top-left of the full pixel array, and the size of the full pixel array is given by android.sensor.info.pixelArraySize.


The coordinate system for most other keys that list pixel coordinates, including android.scaler.cropRegion, is defined relative to the active array rectangle given in this field, with (0, 0) being the top-left of this rectangle.


The active array may be smaller than the full pixel array, since the full array may
include black calibration pixels or other inactive regions.


For devices that do not support android.distortionCorrection.mode control, the active array must be the same as android.sensor.info.preCorrectionActiveArraySize.


For devices that support android.distortionCorrection.mode control, the active array must be enclosed by android.sensor.info.preCorrectionActiveArraySize. The difference between pre-correction active array and active array accounts for scaling or cropping caused by lens geometric distortion correction.


In general, application should always refer to active array size for controls like metering regions or crop region. Two exceptions are when the application is dealing with RAW image buffers (RAW_SENSOR, RAW10, RAW12 etc), or when application explicitly set android.distortionCorrection.mode to OFF. In these cases, application should refer to android.sensor.info.preCorrectionActiveArraySize.


Units: Pixel coordinates on the image sensor


This key is available on all devices.


See Also:
/**
     * <p>The area of the image sensor which corresponds to active pixels after any geometric
     * distortion correction has been applied.</p>
     * <p>This is the rectangle representing the size of the active region of the sensor (i.e.
     * the region that actually receives light from the scene) after any geometric correction
     * has been applied, and should be treated as the maximum size in pixels of any of the
     * image output formats aside from the raw formats.</p>
     * <p>This rectangle is defined relative to the full pixel array; (0,0) is the top-left of
     * the full pixel array, and the size of the full pixel array is given by
     * {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize}.</p>
     * <p>The coordinate system for most other keys that list pixel coordinates, including
     * {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion}, is defined relative to the active array rectangle given in
     * this field, with <code>(0, 0)</code> being the top-left of this rectangle.</p>
     * <p>The active array may be smaller than the full pixel array, since the full array may
     * include black calibration pixels or other inactive regions.</p>
     * <p>For devices that do not support {@link CaptureRequest#DISTORTION_CORRECTION_MODE android.distortionCorrection.mode} control, the active
     * array must be the same as {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize}.</p>
     * <p>For devices that support {@link CaptureRequest#DISTORTION_CORRECTION_MODE android.distortionCorrection.mode} control, the active array must
     * be enclosed by {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize}. The difference between
     * pre-correction active array and active array accounts for scaling or cropping caused
     * by lens geometric distortion correction.</p>
     * <p>In general, application should always refer to active array size for controls like
     * metering regions or crop region. Two exceptions are when the application is dealing with
     * RAW image buffers (RAW_SENSOR, RAW10, RAW12 etc), or when application explicitly set
     * {@link CaptureRequest#DISTORTION_CORRECTION_MODE android.distortionCorrection.mode} to OFF. In these cases, application should refer
     * to {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize}.</p>
     * <p><b>Units</b>: Pixel coordinates on the image sensor</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#DISTORTION_CORRECTION_MODE
     * @see CaptureRequest#SCALER_CROP_REGION
     * @see CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
     * @see CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
     */
    @PublicKey
    public static final Key<android.graphics.Rect> SENSOR_INFO_ACTIVE_ARRAY_SIZE =
            new Key<android.graphics.Rect>("android.sensor.info.activeArraySize", android.graphics.Rect.class);

    
Range of sensitivities for android.sensor.sensitivity supported by this camera device.


The values are the standard ISO sensitivity values,
as defined in ISO 12232:2006.


Range of valid values:

Min <= 100, Max >= 800


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>Range of sensitivities for {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity} supported by this
     * camera device.</p>
     * <p>The values are the standard ISO sensitivity values,
     * as defined in ISO 12232:2006.</p>
     * <p><b>Range of valid values:</b><br>
     * Min &lt;= 100, Max &gt;= 800</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#SENSOR_SENSITIVITY
     */
    @PublicKey
    public static final Key<android.util.Range<Integer>> SENSOR_INFO_SENSITIVITY_RANGE =
            new Key<android.util.Range<Integer>>("android.sensor.info.sensitivityRange", new TypeReference<android.util.Range<Integer>>() {{ }});

    
The arrangement of color filters on sensor;
represents the colors in the top-left 2x2 section of
the sensor, in reading order.


Possible values:



Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>The arrangement of color filters on sensor;
     * represents the colors in the top-left 2x2 section of
     * the sensor, in reading order.</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB RGGB}</li>
     *   <li>{@link #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG GRBG}</li>
     *   <li>{@link #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG GBRG}</li>
     *   <li>{@link #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR BGGR}</li>
     *   <li>{@link #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB RGB}</li>
     * </ul></p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB
     * @see #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG
     * @see #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG
     * @see #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR
     * @see #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB
     */
    @PublicKey
    public static final Key<Integer> SENSOR_INFO_COLOR_FILTER_ARRANGEMENT =
            new Key<Integer>("android.sensor.info.colorFilterArrangement", int.class);

    
The range of image exposure times for android.sensor.exposureTime supported by this camera device.


Units: Nanoseconds


Range of valid values:
 The minimum exposure time will be less than 100 us. For FULL capability devices (android.info.supportedHardwareLevel == FULL), the maximum exposure time will be greater than 100ms.


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>The range of image exposure times for {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime} supported
     * by this camera device.</p>
     * <p><b>Units</b>: Nanoseconds</p>
     * <p><b>Range of valid values:</b><br>
     * The minimum exposure time will be less than 100 us. For FULL
     * capability devices ({@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} == FULL),
     * the maximum exposure time will be greater than 100ms.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#SENSOR_EXPOSURE_TIME
     */
    @PublicKey
    public static final Key<android.util.Range<Long>> SENSOR_INFO_EXPOSURE_TIME_RANGE =
            new Key<android.util.Range<Long>>("android.sensor.info.exposureTimeRange", new TypeReference<android.util.Range<Long>>() {{ }});

    
The maximum possible frame duration (minimum frame rate) for android.sensor.frameDuration that is supported this camera device.


Attempting to use frame durations beyond the maximum will result in the frame
duration being clipped to the maximum. See that control for a full definition of frame
durations.


Refer to StreamConfigurationMap.getOutputMinFrameDuration for the minimum frame duration values.


Units: Nanoseconds


Range of valid values:
 For FULL capability devices (android.info.supportedHardwareLevel == FULL), at least 100ms.


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>The maximum possible frame duration (minimum frame rate) for
     * {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} that is supported this camera device.</p>
     * <p>Attempting to use frame durations beyond the maximum will result in the frame
     * duration being clipped to the maximum. See that control for a full definition of frame
     * durations.</p>
     * <p>Refer to {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration }
     * for the minimum frame duration values.</p>
     * <p><b>Units</b>: Nanoseconds</p>
     * <p><b>Range of valid values:</b><br>
     * For FULL capability devices
     * ({@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} == FULL), at least 100ms.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#SENSOR_FRAME_DURATION
     */
    @PublicKey
    public static final Key<Long> SENSOR_INFO_MAX_FRAME_DURATION =
            new Key<Long>("android.sensor.info.maxFrameDuration", long.class);

    
The physical dimensions of the full pixel
array.


This is the physical size of the sensor pixel array defined by android.sensor.info.pixelArraySize.


Units: Millimeters


This key is available on all devices.


See Also:
/**
     * <p>The physical dimensions of the full pixel
     * array.</p>
     * <p>This is the physical size of the sensor pixel
     * array defined by {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize}.</p>
     * <p><b>Units</b>: Millimeters</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
     */
    @PublicKey
    public static final Key<android.util.SizeF> SENSOR_INFO_PHYSICAL_SIZE =
            new Key<android.util.SizeF>("android.sensor.info.physicalSize", android.util.SizeF.class);

    
Dimensions of the full pixel array, possibly
including black calibration pixels.


The pixel count of the full pixel array of the image sensor, which covers android.sensor.info.physicalSize area. This represents the full pixel dimensions of the raw buffers produced by this sensor.


If a camera device supports raw sensor formats, either this or android.sensor.info.preCorrectionActiveArraySize is the maximum dimensions for the raw output formats listed in StreamConfigurationMap (this depends on whether or not the image sensor returns buffers containing pixels that are not part of the active array region for blacklevel calibration or other purposes).


Some parts of the full pixel array may not receive light from the scene, or be otherwise inactive. The android.sensor.info.preCorrectionActiveArraySize key defines the rectangle of active pixels that will be included in processed image formats.


Units: Pixels


This key is available on all devices.


See Also:
/**
     * <p>Dimensions of the full pixel array, possibly
     * including black calibration pixels.</p>
     * <p>The pixel count of the full pixel array of the image sensor, which covers
     * {@link CameraCharacteristics#SENSOR_INFO_PHYSICAL_SIZE android.sensor.info.physicalSize} area.  This represents the full pixel dimensions of
     * the raw buffers produced by this sensor.</p>
     * <p>If a camera device supports raw sensor formats, either this or
     * {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize} is the maximum dimensions for the raw
     * output formats listed in {@link android.hardware.camera2.params.StreamConfigurationMap }
     * (this depends on whether or not the image sensor returns buffers containing pixels that
     * are not part of the active array region for blacklevel calibration or other purposes).</p>
     * <p>Some parts of the full pixel array may not receive light from the scene,
     * or be otherwise inactive.  The {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize} key
     * defines the rectangle of active pixels that will be included in processed image
     * formats.</p>
     * <p><b>Units</b>: Pixels</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_INFO_PHYSICAL_SIZE
     * @see CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
     */
    @PublicKey
    public static final Key<android.util.Size> SENSOR_INFO_PIXEL_ARRAY_SIZE =
            new Key<android.util.Size>("android.sensor.info.pixelArraySize", android.util.Size.class);

    
Maximum raw value output by sensor.


This specifies the fully-saturated encoding level for the raw sample values from the sensor. This is typically caused by the sensor becoming highly non-linear or clipping. The minimum for each channel is specified by the offset in the android.sensor.blackLevelPattern key.


The white level is typically determined either by sensor bit depth
(8-14 bits is expected), or by the point where the sensor response
becomes too non-linear to be useful.  The default value for this is
maximum representable value for a 16-bit raw sample (2^16 - 1).


The white level values of captured images may vary for different capture settings (e.g., android.sensor.sensitivity). This key represents a coarse approximation for such case. It is recommended to use android.sensor.dynamicWhiteLevel for captures when supported by the camera device, which provides more accurate white level values.


Range of valid values:

> 255 (8-bit output)


Optional - This value may be null on some devices.


See Also:
/**
     * <p>Maximum raw value output by sensor.</p>
     * <p>This specifies the fully-saturated encoding level for the raw
     * sample values from the sensor.  This is typically caused by the
     * sensor becoming highly non-linear or clipping. The minimum for
     * each channel is specified by the offset in the
     * {@link CameraCharacteristics#SENSOR_BLACK_LEVEL_PATTERN android.sensor.blackLevelPattern} key.</p>
     * <p>The white level is typically determined either by sensor bit depth
     * (8-14 bits is expected), or by the point where the sensor response
     * becomes too non-linear to be useful.  The default value for this is
     * maximum representable value for a 16-bit raw sample (2^16 - 1).</p>
     * <p>The white level values of captured images may vary for different
     * capture settings (e.g., {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}). This key
     * represents a coarse approximation for such case. It is recommended
     * to use {@link CaptureResult#SENSOR_DYNAMIC_WHITE_LEVEL android.sensor.dynamicWhiteLevel} for captures when supported
     * by the camera device, which provides more accurate white level values.</p>
     * <p><b>Range of valid values:</b><br>
     * &gt; 255 (8-bit output)</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_BLACK_LEVEL_PATTERN
     * @see CaptureResult#SENSOR_DYNAMIC_WHITE_LEVEL
     * @see CaptureRequest#SENSOR_SENSITIVITY
     */
    @PublicKey
    public static final Key<Integer> SENSOR_INFO_WHITE_LEVEL =
            new Key<Integer>("android.sensor.info.whiteLevel", int.class);

    
The time base source for sensor capture start timestamps.


The timestamps provided for captures are always in nanoseconds and monotonic, but
may not based on a time source that can be compared to other system time sources.


This characteristic defines the source for the timestamps, and therefore whether they
can be compared against other system time sources/timestamps.


Possible values:



This key is available on all devices.


See Also:
/**
     * <p>The time base source for sensor capture start timestamps.</p>
     * <p>The timestamps provided for captures are always in nanoseconds and monotonic, but
     * may not based on a time source that can be compared to other system time sources.</p>
     * <p>This characteristic defines the source for the timestamps, and therefore whether they
     * can be compared against other system time sources/timestamps.</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN UNKNOWN}</li>
     *   <li>{@link #SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME REALTIME}</li>
     * </ul></p>
     * <p>This key is available on all devices.</p>
     * @see #SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN
     * @see #SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME
     */
    @PublicKey
    public static final Key<Integer> SENSOR_INFO_TIMESTAMP_SOURCE =
            new Key<Integer>("android.sensor.info.timestampSource", int.class);

    
Whether the RAW images output from this camera device are subject to
lens shading correction.


If TRUE, all images produced by the camera device in the RAW image formats will have lens shading correction already applied to it. If FALSE, the images will not be adjusted for lens shading correction. See android.request.maxNumOutputRaw for a list of RAW image formats.


This key will be null for all devices do not report this information.
Devices with RAW capability will always report this information in this key.


Optional - This value may be null on some devices.


See Also:
/**
     * <p>Whether the RAW images output from this camera device are subject to
     * lens shading correction.</p>
     * <p>If TRUE, all images produced by the camera device in the RAW image formats will
     * have lens shading correction already applied to it. If FALSE, the images will
     * not be adjusted for lens shading correction.
     * See {@link CameraCharacteristics#REQUEST_MAX_NUM_OUTPUT_RAW android.request.maxNumOutputRaw} for a list of RAW image formats.</p>
     * <p>This key will be <code>null</code> for all devices do not report this information.
     * Devices with RAW capability will always report this information in this key.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#REQUEST_MAX_NUM_OUTPUT_RAW
     */
    @PublicKey
    public static final Key<Boolean> SENSOR_INFO_LENS_SHADING_APPLIED =
            new Key<Boolean>("android.sensor.info.lensShadingApplied", boolean.class);

    
The area of the image sensor which corresponds to active pixels prior to the
application of any geometric distortion correction.


This is the rectangle representing the size of the active region of the sensor (i.e.
the region that actually receives light from the scene) before any geometric correction
has been applied, and should be treated as the active region rectangle for any of the
raw formats.  All metadata associated with raw processing (e.g. the lens shading
correction map, and radial distortion fields) treats the top, left of this rectangle as
the origin, (0,0).


The size of this region determines the maximum field of view and the maximum number of pixels that an image from this sensor can contain, prior to the application of geometric distortion correction. The effective maximum pixel dimensions of a post-distortion-corrected image is given by the android.sensor.info.activeArraySize field, and the effective maximum field of view for a post-distortion-corrected image can be calculated by applying the geometric distortion correction fields to this rectangle, and cropping to the rectangle given in android.sensor.info.activeArraySize.


E.g. to calculate position of a pixel, (x,y), in a processed YUV output image with the dimensions in android.sensor.info.activeArraySize given the position of a pixel, (x', y'), in the raw pixel array with dimensions give in android.sensor.info.pixelArraySize:


    

  1. Choose a pixel (x', y') within the active array region of the raw buffer given in android.sensor.info.preCorrectionActiveArraySize, otherwise this pixel is considered to be outside of the FOV, and will not be shown in the processed output image.
    2. 

  2. Apply geometric distortion correction to get the post-distortion pixel coordinate, (x_i, y_i). When applying geometric correction metadata, note that metadata for raw buffers is defined relative to the top, left of the android.sensor.info.preCorrectionActiveArraySize rectangle.
    3. 

  3. If the resulting corrected pixel coordinate is within the region given in android.sensor.info.activeArraySize, then the position of this pixel in the processed output image buffer is (x_i - activeArray.left, y_i - activeArray.top),
when the top, left coordinate of that buffer is treated as (0, 0).
    4. 



Thus, for pixel x',y' = (25, 25) on a sensor where android.sensor.info.pixelArraySize is (100,100), android.sensor.info.preCorrectionActiveArraySize is (10, 10, 100, 100), android.sensor.info.activeArraySize is (20, 20, 80, 80), and the geometric distortion correction doesn't change the pixel coordinate, the resulting pixel selected in pixel coordinates would be x,y = (25, 25) relative to the top,left of the raw buffer with dimensions given in android.sensor.info.pixelArraySize, and would be (5, 5) relative to the top,left of post-processed YUV output buffer with dimensions given in android.sensor.info.activeArraySize.


The currently supported fields that correct for geometric distortion are:


    

  1. android.lens.distortion.
    2. 



If the camera device doesn't support geometric distortion correction, or all of the geometric distortion fields are no-ops, this rectangle will be the same as the post-distortion-corrected rectangle given in android.sensor.info.activeArraySize.


This rectangle is defined relative to the full pixel array; (0,0) is the top-left of the full pixel array, and the size of the full pixel array is given by android.sensor.info.pixelArraySize.


The pre-correction active array may be smaller than the full pixel array, since the
full array may include black calibration pixels or other inactive regions.


Units: Pixel coordinates on the image sensor


This key is available on all devices.


See Also:
/**
     * <p>The area of the image sensor which corresponds to active pixels prior to the
     * application of any geometric distortion correction.</p>
     * <p>This is the rectangle representing the size of the active region of the sensor (i.e.
     * the region that actually receives light from the scene) before any geometric correction
     * has been applied, and should be treated as the active region rectangle for any of the
     * raw formats.  All metadata associated with raw processing (e.g. the lens shading
     * correction map, and radial distortion fields) treats the top, left of this rectangle as
     * the origin, (0,0).</p>
     * <p>The size of this region determines the maximum field of view and the maximum number of
     * pixels that an image from this sensor can contain, prior to the application of
     * geometric distortion correction. The effective maximum pixel dimensions of a
     * post-distortion-corrected image is given by the {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}
     * field, and the effective maximum field of view for a post-distortion-corrected image
     * can be calculated by applying the geometric distortion correction fields to this
     * rectangle, and cropping to the rectangle given in {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.</p>
     * <p>E.g. to calculate position of a pixel, (x,y), in a processed YUV output image with the
     * dimensions in {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize} given the position of a pixel,
     * (x', y'), in the raw pixel array with dimensions give in
     * {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize}:</p>
     * <ol>
     * <li>Choose a pixel (x', y') within the active array region of the raw buffer given in
     * {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize}, otherwise this pixel is considered
     * to be outside of the FOV, and will not be shown in the processed output image.</li>
     * <li>Apply geometric distortion correction to get the post-distortion pixel coordinate,
     * (x_i, y_i). When applying geometric correction metadata, note that metadata for raw
     * buffers is defined relative to the top, left of the
     * {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize} rectangle.</li>
     * <li>If the resulting corrected pixel coordinate is within the region given in
     * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}, then the position of this pixel in the
     * processed output image buffer is <code>(x_i - activeArray.left, y_i - activeArray.top)</code>,
     * when the top, left coordinate of that buffer is treated as (0, 0).</li>
     * </ol>
     * <p>Thus, for pixel x',y' = (25, 25) on a sensor where {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize}
     * is (100,100), {@link CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE android.sensor.info.preCorrectionActiveArraySize} is (10, 10, 100, 100),
     * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize} is (20, 20, 80, 80), and the geometric distortion
     * correction doesn't change the pixel coordinate, the resulting pixel selected in
     * pixel coordinates would be x,y = (25, 25) relative to the top,left of the raw buffer
     * with dimensions given in {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize}, and would be (5, 5)
     * relative to the top,left of post-processed YUV output buffer with dimensions given in
     * {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.</p>
     * <p>The currently supported fields that correct for geometric distortion are:</p>
     * <ol>
     * <li>{@link CameraCharacteristics#LENS_DISTORTION android.lens.distortion}.</li>
     * </ol>
     * <p>If the camera device doesn't support geometric distortion correction, or all of the
     * geometric distortion fields are no-ops, this rectangle will be the same as the
     * post-distortion-corrected rectangle given in {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.</p>
     * <p>This rectangle is defined relative to the full pixel array; (0,0) is the top-left of
     * the full pixel array, and the size of the full pixel array is given by
     * {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize}.</p>
     * <p>The pre-correction active array may be smaller than the full pixel array, since the
     * full array may include black calibration pixels or other inactive regions.</p>
     * <p><b>Units</b>: Pixel coordinates on the image sensor</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#LENS_DISTORTION
     * @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
     * @see CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
     * @see CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
     */
    @PublicKey
    public static final Key<android.graphics.Rect> SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE =
            new Key<android.graphics.Rect>("android.sensor.info.preCorrectionActiveArraySize", android.graphics.Rect.class);

    
The standard reference illuminant used as the scene light source when calculating the android.sensor.colorTransform1, android.sensor.calibrationTransform1, and android.sensor.forwardMatrix1 matrices.


The values in this key correspond to the values defined for the
EXIF LightSource tag. These illuminants are standard light sources
that are often used calibrating camera devices.


If this key is present, then android.sensor.colorTransform1, android.sensor.calibrationTransform1, and android.sensor.forwardMatrix1 will also be present.


Some devices may choose to provide a second set of calibration information for improved quality, including android.sensor.referenceIlluminant2 and its corresponding matrices.


Possible values:



Optional - This value may be null on some devices.


See Also:
/**
     * <p>The standard reference illuminant used as the scene light source when
     * calculating the {@link CameraCharacteristics#SENSOR_COLOR_TRANSFORM1 android.sensor.colorTransform1},
     * {@link CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM1 android.sensor.calibrationTransform1}, and
     * {@link CameraCharacteristics#SENSOR_FORWARD_MATRIX1 android.sensor.forwardMatrix1} matrices.</p>
     * <p>The values in this key correspond to the values defined for the
     * EXIF LightSource tag. These illuminants are standard light sources
     * that are often used calibrating camera devices.</p>
     * <p>If this key is present, then {@link CameraCharacteristics#SENSOR_COLOR_TRANSFORM1 android.sensor.colorTransform1},
     * {@link CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM1 android.sensor.calibrationTransform1}, and
     * {@link CameraCharacteristics#SENSOR_FORWARD_MATRIX1 android.sensor.forwardMatrix1} will also be present.</p>
     * <p>Some devices may choose to provide a second set of calibration
     * information for improved quality, including
     * {@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2 android.sensor.referenceIlluminant2} and its corresponding matrices.</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT DAYLIGHT}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT FLUORESCENT}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN TUNGSTEN}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_FLASH FLASH}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER FINE_WEATHER}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER CLOUDY_WEATHER}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_SHADE SHADE}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT DAYLIGHT_FLUORESCENT}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT DAY_WHITE_FLUORESCENT}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT COOL_WHITE_FLUORESCENT}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT WHITE_FLUORESCENT}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A STANDARD_A}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B STANDARD_B}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C STANDARD_C}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_D55 D55}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_D65 D65}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_D75 D75}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_D50 D50}</li>
     *   <li>{@link #SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN ISO_STUDIO_TUNGSTEN}</li>
     * </ul></p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM1
     * @see CameraCharacteristics#SENSOR_COLOR_TRANSFORM1
     * @see CameraCharacteristics#SENSOR_FORWARD_MATRIX1
     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2
     * @see #SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT
     * @see #SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT
     * @see #SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN
     * @see #SENSOR_REFERENCE_ILLUMINANT1_FLASH
     * @see #SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER
     * @see #SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER
     * @see #SENSOR_REFERENCE_ILLUMINANT1_SHADE
     * @see #SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT
     * @see #SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT
     * @see #SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT
     * @see #SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT
     * @see #SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A
     * @see #SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B
     * @see #SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C
     * @see #SENSOR_REFERENCE_ILLUMINANT1_D55
     * @see #SENSOR_REFERENCE_ILLUMINANT1_D65
     * @see #SENSOR_REFERENCE_ILLUMINANT1_D75
     * @see #SENSOR_REFERENCE_ILLUMINANT1_D50
     * @see #SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN
     */
    @PublicKey
    public static final Key<Integer> SENSOR_REFERENCE_ILLUMINANT1 =
            new Key<Integer>("android.sensor.referenceIlluminant1", int.class);

    
The standard reference illuminant used as the scene light source when calculating the android.sensor.colorTransform2, android.sensor.calibrationTransform2, and android.sensor.forwardMatrix2 matrices.


See android.sensor.referenceIlluminant1 for more details.


If this key is present, then android.sensor.colorTransform2, android.sensor.calibrationTransform2, and android.sensor.forwardMatrix2 will also be present.


Range of valid values:
 Any value listed in android.sensor.referenceIlluminant1


Optional - This value may be null on some devices.


See Also:
/**
     * <p>The standard reference illuminant used as the scene light source when
     * calculating the {@link CameraCharacteristics#SENSOR_COLOR_TRANSFORM2 android.sensor.colorTransform2},
     * {@link CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM2 android.sensor.calibrationTransform2}, and
     * {@link CameraCharacteristics#SENSOR_FORWARD_MATRIX2 android.sensor.forwardMatrix2} matrices.</p>
     * <p>See {@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1 android.sensor.referenceIlluminant1} for more details.</p>
     * <p>If this key is present, then {@link CameraCharacteristics#SENSOR_COLOR_TRANSFORM2 android.sensor.colorTransform2},
     * {@link CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM2 android.sensor.calibrationTransform2}, and
     * {@link CameraCharacteristics#SENSOR_FORWARD_MATRIX2 android.sensor.forwardMatrix2} will also be present.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1 android.sensor.referenceIlluminant1}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM2
     * @see CameraCharacteristics#SENSOR_COLOR_TRANSFORM2
     * @see CameraCharacteristics#SENSOR_FORWARD_MATRIX2
     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
     */
    @PublicKey
    public static final Key<Byte> SENSOR_REFERENCE_ILLUMINANT2 =
            new Key<Byte>("android.sensor.referenceIlluminant2", byte.class);

    
A per-device calibration transform matrix that maps from the
reference sensor colorspace to the actual device sensor colorspace.


This matrix is used to correct for per-device variations in the
sensor colorspace, and is used for processing raw buffer data.


The matrix is expressed as a 3x3 matrix in row-major-order, and contains a per-device calibration transform that maps colors from reference sensor color space (i.e. the "golden module" colorspace) into this camera device's native sensor color space under the first reference illuminant (android.sensor.referenceIlluminant1).


Optional - This value may be null on some devices.


See Also:
/**
     * <p>A per-device calibration transform matrix that maps from the
     * reference sensor colorspace to the actual device sensor colorspace.</p>
     * <p>This matrix is used to correct for per-device variations in the
     * sensor colorspace, and is used for processing raw buffer data.</p>
     * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
     * contains a per-device calibration transform that maps colors
     * from reference sensor color space (i.e. the "golden module"
     * colorspace) into this camera device's native sensor color
     * space under the first reference illuminant
     * ({@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1 android.sensor.referenceIlluminant1}).</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
     */
    @PublicKey
    public static final Key<android.hardware.camera2.params.ColorSpaceTransform> SENSOR_CALIBRATION_TRANSFORM1 =
            new Key<android.hardware.camera2.params.ColorSpaceTransform>("android.sensor.calibrationTransform1", android.hardware.camera2.params.ColorSpaceTransform.class);

    
A per-device calibration transform matrix that maps from the
reference sensor colorspace to the actual device sensor colorspace
(this is the colorspace of the raw buffer data).


This matrix is used to correct for per-device variations in the
sensor colorspace, and is used for processing raw buffer data.


The matrix is expressed as a 3x3 matrix in row-major-order, and contains a per-device calibration transform that maps colors from reference sensor color space (i.e. the "golden module" colorspace) into this camera device's native sensor color space under the second reference illuminant (android.sensor.referenceIlluminant2).


This matrix will only be present if the second reference
illuminant is present.


Optional - This value may be null on some devices.


See Also:
/**
     * <p>A per-device calibration transform matrix that maps from the
     * reference sensor colorspace to the actual device sensor colorspace
     * (this is the colorspace of the raw buffer data).</p>
     * <p>This matrix is used to correct for per-device variations in the
     * sensor colorspace, and is used for processing raw buffer data.</p>
     * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
     * contains a per-device calibration transform that maps colors
     * from reference sensor color space (i.e. the "golden module"
     * colorspace) into this camera device's native sensor color
     * space under the second reference illuminant
     * ({@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2 android.sensor.referenceIlluminant2}).</p>
     * <p>This matrix will only be present if the second reference
     * illuminant is present.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2
     */
    @PublicKey
    public static final Key<android.hardware.camera2.params.ColorSpaceTransform> SENSOR_CALIBRATION_TRANSFORM2 =
            new Key<android.hardware.camera2.params.ColorSpaceTransform>("android.sensor.calibrationTransform2", android.hardware.camera2.params.ColorSpaceTransform.class);

    
A matrix that transforms color values from CIE XYZ color space to
reference sensor color space.


This matrix is used to convert from the standard CIE XYZ color
space to the reference sensor colorspace, and is used when processing
raw buffer data.


The matrix is expressed as a 3x3 matrix in row-major-order, and contains a color transform matrix that maps colors from the CIE XYZ color space to the reference sensor color space (i.e. the "golden module" colorspace) under the first reference illuminant (android.sensor.referenceIlluminant1).


The white points chosen in both the reference sensor color space
and the CIE XYZ colorspace when calculating this transform will
match the standard white point for the first reference illuminant
(i.e. no chromatic adaptation will be applied by this transform).


Optional - This value may be null on some devices.


See Also:
/**
     * <p>A matrix that transforms color values from CIE XYZ color space to
     * reference sensor color space.</p>
     * <p>This matrix is used to convert from the standard CIE XYZ color
     * space to the reference sensor colorspace, and is used when processing
     * raw buffer data.</p>
     * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
     * contains a color transform matrix that maps colors from the CIE
     * XYZ color space to the reference sensor color space (i.e. the
     * "golden module" colorspace) under the first reference illuminant
     * ({@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1 android.sensor.referenceIlluminant1}).</p>
     * <p>The white points chosen in both the reference sensor color space
     * and the CIE XYZ colorspace when calculating this transform will
     * match the standard white point for the first reference illuminant
     * (i.e. no chromatic adaptation will be applied by this transform).</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
     */
    @PublicKey
    public static final Key<android.hardware.camera2.params.ColorSpaceTransform> SENSOR_COLOR_TRANSFORM1 =
            new Key<android.hardware.camera2.params.ColorSpaceTransform>("android.sensor.colorTransform1", android.hardware.camera2.params.ColorSpaceTransform.class);

    
A matrix that transforms color values from CIE XYZ color space to
reference sensor color space.


This matrix is used to convert from the standard CIE XYZ color
space to the reference sensor colorspace, and is used when processing
raw buffer data.


The matrix is expressed as a 3x3 matrix in row-major-order, and contains a color transform matrix that maps colors from the CIE XYZ color space to the reference sensor color space (i.e. the "golden module" colorspace) under the second reference illuminant (android.sensor.referenceIlluminant2).


The white points chosen in both the reference sensor color space
and the CIE XYZ colorspace when calculating this transform will
match the standard white point for the second reference illuminant
(i.e. no chromatic adaptation will be applied by this transform).


This matrix will only be present if the second reference
illuminant is present.


Optional - This value may be null on some devices.


See Also:
/**
     * <p>A matrix that transforms color values from CIE XYZ color space to
     * reference sensor color space.</p>
     * <p>This matrix is used to convert from the standard CIE XYZ color
     * space to the reference sensor colorspace, and is used when processing
     * raw buffer data.</p>
     * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
     * contains a color transform matrix that maps colors from the CIE
     * XYZ color space to the reference sensor color space (i.e. the
     * "golden module" colorspace) under the second reference illuminant
     * ({@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2 android.sensor.referenceIlluminant2}).</p>
     * <p>The white points chosen in both the reference sensor color space
     * and the CIE XYZ colorspace when calculating this transform will
     * match the standard white point for the second reference illuminant
     * (i.e. no chromatic adaptation will be applied by this transform).</p>
     * <p>This matrix will only be present if the second reference
     * illuminant is present.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2
     */
    @PublicKey
    public static final Key<android.hardware.camera2.params.ColorSpaceTransform> SENSOR_COLOR_TRANSFORM2 =
            new Key<android.hardware.camera2.params.ColorSpaceTransform>("android.sensor.colorTransform2", android.hardware.camera2.params.ColorSpaceTransform.class);

    
A matrix that transforms white balanced camera colors from the reference
sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.


This matrix is used to convert to the standard CIE XYZ colorspace, and
is used when processing raw buffer data.


This matrix is expressed as a 3x3 matrix in row-major-order, and contains
a color transform matrix that maps white balanced colors from the
reference sensor color space to the CIE XYZ color space with a D50 white
point.


Under the first reference illuminant (android.sensor.referenceIlluminant1) this matrix is chosen so that the standard white point for this reference illuminant in the reference sensor colorspace is mapped to D50 in the CIE XYZ colorspace.


Optional - This value may be null on some devices.


See Also:
/**
     * <p>A matrix that transforms white balanced camera colors from the reference
     * sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.</p>
     * <p>This matrix is used to convert to the standard CIE XYZ colorspace, and
     * is used when processing raw buffer data.</p>
     * <p>This matrix is expressed as a 3x3 matrix in row-major-order, and contains
     * a color transform matrix that maps white balanced colors from the
     * reference sensor color space to the CIE XYZ color space with a D50 white
     * point.</p>
     * <p>Under the first reference illuminant ({@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1 android.sensor.referenceIlluminant1})
     * this matrix is chosen so that the standard white point for this reference
     * illuminant in the reference sensor colorspace is mapped to D50 in the
     * CIE XYZ colorspace.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1
     */
    @PublicKey
    public static final Key<android.hardware.camera2.params.ColorSpaceTransform> SENSOR_FORWARD_MATRIX1 =
            new Key<android.hardware.camera2.params.ColorSpaceTransform>("android.sensor.forwardMatrix1", android.hardware.camera2.params.ColorSpaceTransform.class);

    
A matrix that transforms white balanced camera colors from the reference
sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.


This matrix is used to convert to the standard CIE XYZ colorspace, and
is used when processing raw buffer data.


This matrix is expressed as a 3x3 matrix in row-major-order, and contains
a color transform matrix that maps white balanced colors from the
reference sensor color space to the CIE XYZ color space with a D50 white
point.


Under the second reference illuminant (android.sensor.referenceIlluminant2) this matrix is chosen so that the standard white point for this reference illuminant in the reference sensor colorspace is mapped to D50 in the CIE XYZ colorspace.


This matrix will only be present if the second reference
illuminant is present.


Optional - This value may be null on some devices.


See Also:
/**
     * <p>A matrix that transforms white balanced camera colors from the reference
     * sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.</p>
     * <p>This matrix is used to convert to the standard CIE XYZ colorspace, and
     * is used when processing raw buffer data.</p>
     * <p>This matrix is expressed as a 3x3 matrix in row-major-order, and contains
     * a color transform matrix that maps white balanced colors from the
     * reference sensor color space to the CIE XYZ color space with a D50 white
     * point.</p>
     * <p>Under the second reference illuminant ({@link CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2 android.sensor.referenceIlluminant2})
     * this matrix is chosen so that the standard white point for this reference
     * illuminant in the reference sensor colorspace is mapped to D50 in the
     * CIE XYZ colorspace.</p>
     * <p>This matrix will only be present if the second reference
     * illuminant is present.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2
     */
    @PublicKey
    public static final Key<android.hardware.camera2.params.ColorSpaceTransform> SENSOR_FORWARD_MATRIX2 =
            new Key<android.hardware.camera2.params.ColorSpaceTransform>("android.sensor.forwardMatrix2", android.hardware.camera2.params.ColorSpaceTransform.class);

    
A fixed black level offset for each of the color filter arrangement
(CFA) mosaic channels.


This key specifies the zero light value for each of the CFA mosaic channels in the camera sensor. The maximal value output by the sensor is represented by the value in android.sensor.info.whiteLevel.


The values are given in the same order as channels listed for the CFA layout key (see android.sensor.info.colorFilterArrangement), i.e. the nth value given corresponds to the black level offset for the nth color channel listed in the CFA.


The black level values of captured images may vary for different capture settings (e.g., android.sensor.sensitivity). This key represents a coarse approximation for such case. It is recommended to use android.sensor.dynamicBlackLevel or use pixels from android.sensor.opticalBlackRegions directly for captures when supported by the camera device, which provides more accurate black level values. For raw capture in particular, it is recommended to use pixels from android.sensor.opticalBlackRegions to calculate black level values for each frame.


Range of valid values:

>= 0 for each.


Optional - This value may be null on some devices.


See Also:
/**
     * <p>A fixed black level offset for each of the color filter arrangement
     * (CFA) mosaic channels.</p>
     * <p>This key specifies the zero light value for each of the CFA mosaic
     * channels in the camera sensor.  The maximal value output by the
     * sensor is represented by the value in {@link CameraCharacteristics#SENSOR_INFO_WHITE_LEVEL android.sensor.info.whiteLevel}.</p>
     * <p>The values are given in the same order as channels listed for the CFA
     * layout key (see {@link CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT android.sensor.info.colorFilterArrangement}), i.e. the
     * nth value given corresponds to the black level offset for the nth
     * color channel listed in the CFA.</p>
     * <p>The black level values of captured images may vary for different
     * capture settings (e.g., {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}). This key
     * represents a coarse approximation for such case. It is recommended to
     * use {@link CaptureResult#SENSOR_DYNAMIC_BLACK_LEVEL android.sensor.dynamicBlackLevel} or use pixels from
     * {@link CameraCharacteristics#SENSOR_OPTICAL_BLACK_REGIONS android.sensor.opticalBlackRegions} directly for captures when
     * supported by the camera device, which provides more accurate black
     * level values. For raw capture in particular, it is recommended to use
     * pixels from {@link CameraCharacteristics#SENSOR_OPTICAL_BLACK_REGIONS android.sensor.opticalBlackRegions} to calculate black
     * level values for each frame.</p>
     * <p><b>Range of valid values:</b><br>
     * &gt;= 0 for each.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CaptureResult#SENSOR_DYNAMIC_BLACK_LEVEL
     * @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
     * @see CameraCharacteristics#SENSOR_INFO_WHITE_LEVEL
     * @see CameraCharacteristics#SENSOR_OPTICAL_BLACK_REGIONS
     * @see CaptureRequest#SENSOR_SENSITIVITY
     */
    @PublicKey
    public static final Key<android.hardware.camera2.params.BlackLevelPattern> SENSOR_BLACK_LEVEL_PATTERN =
            new Key<android.hardware.camera2.params.BlackLevelPattern>("android.sensor.blackLevelPattern", android.hardware.camera2.params.BlackLevelPattern.class);

    
Maximum sensitivity that is implemented
purely through analog gain.


For android.sensor.sensitivity values less than or equal to this, all applied gain must be analog. For values above this, the gain applied can be a mix of analog and digital.


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>Maximum sensitivity that is implemented
     * purely through analog gain.</p>
     * <p>For {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity} values less than or
     * equal to this, all applied gain must be analog. For
     * values above this, the gain applied can be a mix of analog and
     * digital.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#SENSOR_SENSITIVITY
     */
    @PublicKey
    public static final Key<Integer> SENSOR_MAX_ANALOG_SENSITIVITY =
            new Key<Integer>("android.sensor.maxAnalogSensitivity", int.class);

    
Clockwise angle through which the output image needs to be rotated to be
upright on the device screen in its native orientation.


Also defines the direction of rolling shutter readout, which is from top to bottom in
the sensor's coordinate system.


Units: Degrees of clockwise rotation; always a multiple of
90


Range of valid values:

0, 90, 180, 270


This key is available on all devices.


/**
     * <p>Clockwise angle through which the output image needs to be rotated to be
     * upright on the device screen in its native orientation.</p>
     * <p>Also defines the direction of rolling shutter readout, which is from top to bottom in
     * the sensor's coordinate system.</p>
     * <p><b>Units</b>: Degrees of clockwise rotation; always a multiple of
     * 90</p>
     * <p><b>Range of valid values:</b><br>
     * 0, 90, 180, 270</p>
     * <p>This key is available on all devices.</p>
     */
    @PublicKey
    public static final Key<Integer> SENSOR_ORIENTATION =
            new Key<Integer>("android.sensor.orientation", int.class);

    
List of sensor test pattern modes for android.sensor.testPatternMode supported by this camera device.


Defaults to OFF, and always includes OFF if defined.


Range of valid values:
 Any value listed in android.sensor.testPatternMode


Optional - This value may be null on some devices.


See Also:
/**
     * <p>List of sensor test pattern modes for {@link CaptureRequest#SENSOR_TEST_PATTERN_MODE android.sensor.testPatternMode}
     * supported by this camera device.</p>
     * <p>Defaults to OFF, and always includes OFF if defined.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#SENSOR_TEST_PATTERN_MODE android.sensor.testPatternMode}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CaptureRequest#SENSOR_TEST_PATTERN_MODE
     */
    @PublicKey
    public static final Key<int[]> SENSOR_AVAILABLE_TEST_PATTERN_MODES =
            new Key<int[]>("android.sensor.availableTestPatternModes", int[].class);

    
List of disjoint rectangles indicating the sensor
optically shielded black pixel regions.


In most camera sensors, the active array is surrounded by some
optically shielded pixel areas. By blocking light, these pixels
provides a reliable black reference for black level compensation
in active array region.


This key provides a list of disjoint rectangles specifying the regions of optically shielded (with metal shield) black pixel regions if the camera device is capable of reading out these black pixels in the output raw images. In comparison to the fixed black level values reported by android.sensor.blackLevelPattern, this key may provide a more accurate way for the application to calculate black level of each captured raw images.


When this key is reported, the android.sensor.dynamicBlackLevel and android.sensor.dynamicWhiteLevel will also be reported.


Optional - This value may be null on some devices.


See Also:
/**
     * <p>List of disjoint rectangles indicating the sensor
     * optically shielded black pixel regions.</p>
     * <p>In most camera sensors, the active array is surrounded by some
     * optically shielded pixel areas. By blocking light, these pixels
     * provides a reliable black reference for black level compensation
     * in active array region.</p>
     * <p>This key provides a list of disjoint rectangles specifying the
     * regions of optically shielded (with metal shield) black pixel
     * regions if the camera device is capable of reading out these black
     * pixels in the output raw images. In comparison to the fixed black
     * level values reported by {@link CameraCharacteristics#SENSOR_BLACK_LEVEL_PATTERN android.sensor.blackLevelPattern}, this key
     * may provide a more accurate way for the application to calculate
     * black level of each captured raw images.</p>
     * <p>When this key is reported, the {@link CaptureResult#SENSOR_DYNAMIC_BLACK_LEVEL android.sensor.dynamicBlackLevel} and
     * {@link CaptureResult#SENSOR_DYNAMIC_WHITE_LEVEL android.sensor.dynamicWhiteLevel} will also be reported.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CameraCharacteristics#SENSOR_BLACK_LEVEL_PATTERN
     * @see CaptureResult#SENSOR_DYNAMIC_BLACK_LEVEL
     * @see CaptureResult#SENSOR_DYNAMIC_WHITE_LEVEL
     */
    @PublicKey
    public static final Key<android.graphics.Rect[]> SENSOR_OPTICAL_BLACK_REGIONS =
            new Key<android.graphics.Rect[]>("android.sensor.opticalBlackRegions", android.graphics.Rect[].class);

    
List of lens shading modes for android.shading.mode that are supported by this camera device.


This list contains lens shading modes that can be set for the camera device.
Camera devices that support the MANUAL_POST_PROCESSING capability will always
list OFF and FAST mode. This includes all FULL level devices.
LEGACY devices will always only support FAST mode.


Range of valid values:
 Any value listed in android.shading.mode


This key is available on all devices.


See Also:
/**
     * <p>List of lens shading modes for {@link CaptureRequest#SHADING_MODE android.shading.mode} that are supported by this camera device.</p>
     * <p>This list contains lens shading modes that can be set for the camera device.
     * Camera devices that support the MANUAL_POST_PROCESSING capability will always
     * list OFF and FAST mode. This includes all FULL level devices.
     * LEGACY devices will always only support FAST mode.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#SHADING_MODE android.shading.mode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#SHADING_MODE
     */
    @PublicKey
    public static final Key<int[]> SHADING_AVAILABLE_MODES =
            new Key<int[]>("android.shading.availableModes", int[].class);

    
List of face detection modes for android.statistics.faceDetectMode that are supported by this camera device.


OFF is always supported.


Range of valid values:
 Any value listed in android.statistics.faceDetectMode


This key is available on all devices.


See Also:
/**
     * <p>List of face detection modes for {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} that are
     * supported by this camera device.</p>
     * <p>OFF is always supported.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode}</p>
     * <p>This key is available on all devices.</p>
     *
     * @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
     */
    @PublicKey
    public static final Key<int[]> STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES =
            new Key<int[]>("android.statistics.info.availableFaceDetectModes", int[].class);

    
The maximum number of simultaneously detectable
faces.


Range of valid values:

0 for cameras without available face detection; otherwise:
>=4 for LIMITED or FULL hwlevel devices or
>0 for LEGACY devices.


This key is available on all devices.


/**
     * <p>The maximum number of simultaneously detectable
     * faces.</p>
     * <p><b>Range of valid values:</b><br>
     * 0 for cameras without available face detection; otherwise:
     * <code>&gt;=4</code> for LIMITED or FULL hwlevel devices or
     * <code>&gt;0</code> for LEGACY devices.</p>
     * <p>This key is available on all devices.</p>
     */
    @PublicKey
    public static final Key<Integer> STATISTICS_INFO_MAX_FACE_COUNT =
            new Key<Integer>("android.statistics.info.maxFaceCount", int.class);

    
List of hot pixel map output modes for android.statistics.hotPixelMapMode that are supported by this camera device.


If no hotpixel map output is available for this camera device, this will contain only
false.


ON is always supported on devices with the RAW capability.


Range of valid values:
 Any value listed in android.statistics.hotPixelMapMode


Optional - This value may be null on some devices.


See Also:
/**
     * <p>List of hot pixel map output modes for {@link CaptureRequest#STATISTICS_HOT_PIXEL_MAP_MODE android.statistics.hotPixelMapMode} that are
     * supported by this camera device.</p>
     * <p>If no hotpixel map output is available for this camera device, this will contain only
     * <code>false</code>.</p>
     * <p>ON is always supported on devices with the RAW capability.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#STATISTICS_HOT_PIXEL_MAP_MODE android.statistics.hotPixelMapMode}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CaptureRequest#STATISTICS_HOT_PIXEL_MAP_MODE
     */
    @PublicKey
    public static final Key<boolean[]> STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES =
            new Key<boolean[]>("android.statistics.info.availableHotPixelMapModes", boolean[].class);

    
List of lens shading map output modes for android.statistics.lensShadingMapMode that are supported by this camera device.


If no lens shading map output is available for this camera device, this key will
contain only OFF.


ON is always supported on devices with the RAW capability.
LEGACY mode devices will always only support OFF.


Range of valid values:
 Any value listed in android.statistics.lensShadingMapMode


Optional - This value may be null on some devices.


See Also:
/**
     * <p>List of lens shading map output modes for {@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode} that
     * are supported by this camera device.</p>
     * <p>If no lens shading map output is available for this camera device, this key will
     * contain only OFF.</p>
     * <p>ON is always supported on devices with the RAW capability.
     * LEGACY mode devices will always only support OFF.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
     */
    @PublicKey
    public static final Key<int[]> STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES =
            new Key<int[]>("android.statistics.info.availableLensShadingMapModes", int[].class);

    
List of OIS data output modes for android.statistics.oisDataMode that are supported by this camera device.


If no OIS data output is available for this camera device, this key will
contain only OFF.


Range of valid values:
 Any value listed in android.statistics.oisDataMode


Optional - This value may be null on some devices.


See Also:
/**
     * <p>List of OIS data output modes for {@link CaptureRequest#STATISTICS_OIS_DATA_MODE android.statistics.oisDataMode} that
     * are supported by this camera device.</p>
     * <p>If no OIS data output is available for this camera device, this key will
     * contain only OFF.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#STATISTICS_OIS_DATA_MODE android.statistics.oisDataMode}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CaptureRequest#STATISTICS_OIS_DATA_MODE
     */
    @PublicKey
    public static final Key<int[]> STATISTICS_INFO_AVAILABLE_OIS_DATA_MODES =
            new Key<int[]>("android.statistics.info.availableOisDataModes", int[].class);

    
Maximum number of supported points in the tonemap curve that can be used for android.tonemap.curve.


If the actual number of points provided by the application (in android.tonemap.curve*) is less than this maximum, the camera device will resample the curve to its internal representation, using linear interpolation.


The output curves in the result metadata may have a different number
of points than the input curves, and will represent the actual
hardware curves used as closely as possible when linearly interpolated.


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>Maximum number of supported points in the
     * tonemap curve that can be used for {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}.</p>
     * <p>If the actual number of points provided by the application (in {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}*) is
     * less than this maximum, the camera device will resample the curve to its internal
     * representation, using linear interpolation.</p>
     * <p>The output curves in the result metadata may have a different number
     * of points than the input curves, and will represent the actual
     * hardware curves used as closely as possible when linearly interpolated.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#TONEMAP_CURVE
     */
    @PublicKey
    public static final Key<Integer> TONEMAP_MAX_CURVE_POINTS =
            new Key<Integer>("android.tonemap.maxCurvePoints", int.class);

    
List of tonemapping modes for android.tonemap.mode that are supported by this camera device.


Camera devices that support the MANUAL_POST_PROCESSING capability will always contain
at least one of below mode combinations:


    

  • CONTRAST_CURVE, FAST and HIGH_QUALITY
    • 

  • GAMMA_VALUE, PRESET_CURVE, FAST and HIGH_QUALITY
    • 



This includes all FULL level devices.


Range of valid values:
 Any value listed in android.tonemap.mode


Optional - This value may be null on some devices.


Full capability - Present on all camera devices that report being HARDWARE_LEVEL_FULL devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>List of tonemapping modes for {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} that are supported by this camera
     * device.</p>
     * <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always contain
     * at least one of below mode combinations:</p>
     * <ul>
     * <li>CONTRAST_CURVE, FAST and HIGH_QUALITY</li>
     * <li>GAMMA_VALUE, PRESET_CURVE, FAST and HIGH_QUALITY</li>
     * </ul>
     * <p>This includes all FULL level devices.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Full capability</b> -
     * Present on all camera devices that report being {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_FULL HARDWARE_LEVEL_FULL} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#TONEMAP_MODE
     */
    @PublicKey
    public static final Key<int[]> TONEMAP_AVAILABLE_TONE_MAP_MODES =
            new Key<int[]>("android.tonemap.availableToneMapModes", int[].class);

    
A list of camera LEDs that are available on this system.


Possible values:



Optional - This value may be null on some devices.


See Also:
@hide
/**
     * <p>A list of camera LEDs that are available on this system.</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #LED_AVAILABLE_LEDS_TRANSMIT TRANSMIT}</li>
     * </ul></p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * @see #LED_AVAILABLE_LEDS_TRANSMIT
     * @hide
     */
    public static final Key<int[]> LED_AVAILABLE_LEDS =
            new Key<int[]>("android.led.availableLeds", int[].class);

    
Generally classifies the overall set of the camera device functionality.


The supported hardware level is a high-level description of the camera device's
capabilities, summarizing several capabilities into one field.  Each level adds additional
features to the previous one, and is always a strict superset of the previous level.
The ordering is LEGACY < LIMITED < FULL < LEVEL_3.


Starting from LEVEL_3, the level enumerations are guaranteed to be in increasing
numerical value as well. To check if a given device is at least at a given hardware level,
the following code snippet can be used:


// Returns true if the device supports the required hardware level, or better.
boolean isHardwareLevelSupported(CameraCharacteristics c, int requiredLevel) {
    final int[] sortedHwLevels = {
        CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY,
        CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL,
        CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED,
        CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_FULL,
        CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_3
    };
    int deviceLevel = c.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);
    if (requiredLevel == deviceLevel) {
        return true;
    }
    for (int sortedlevel : sortedHwLevels) {
        if (sortedlevel == requiredLevel) {
            return true;
        } else if (sortedlevel == deviceLevel) {
            return false;
        }
    }
    return false; // Should never reach here
}



At a high level, the levels are:


    

  • LEGACY devices operate in a backwards-compatibility mode for older
  Android devices, and have very limited capabilities.
    • 

  • LIMITED devices represent the
  baseline feature set, and may also include additional capabilities that are
  subsets of FULL.
    • 

  • FULL devices additionally support per-frame manual control of sensor, flash, lens and
  post-processing settings, and image capture at a high rate.
    • 

  • LEVEL_3 devices additionally support YUV reprocessing and RAW image capture, along
  with additional output stream configurations.
    • 

  • EXTERNAL devices are similar to LIMITED devices with exceptions like some sensor or
  lens information not reorted or less stable framerates.
    • 



See the individual level enums for full descriptions of the supported capabilities. The android.request.availableCapabilities entry describes the device's capabilities at a finer-grain level, if needed. In addition, many controls have their available settings or ranges defined in individual entries from CameraCharacteristics.


Some features are not part of any particular hardware level or capability and must be
queried separately. These include:



Possible values:



This key is available on all devices.


See Also:
/**
     * <p>Generally classifies the overall set of the camera device functionality.</p>
     * <p>The supported hardware level is a high-level description of the camera device's
     * capabilities, summarizing several capabilities into one field.  Each level adds additional
     * features to the previous one, and is always a strict superset of the previous level.
     * The ordering is <code>LEGACY &lt; LIMITED &lt; FULL &lt; LEVEL_3</code>.</p>
     * <p>Starting from <code>LEVEL_3</code>, the level enumerations are guaranteed to be in increasing
     * numerical value as well. To check if a given device is at least at a given hardware level,
     * the following code snippet can be used:</p>
     * <pre><code>// Returns true if the device supports the required hardware level, or better.
     * boolean isHardwareLevelSupported(CameraCharacteristics c, int requiredLevel) {
     *     final int[] sortedHwLevels = {
     *         CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY,
     *         CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL,
     *         CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED,
     *         CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_FULL,
     *         CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_3
     *     };
     *     int deviceLevel = c.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);
     *     if (requiredLevel == deviceLevel) {
     *         return true;
     *     }
     *
     *     for (int sortedlevel : sortedHwLevels) {
     *         if (sortedlevel == requiredLevel) {
     *             return true;
     *         } else if (sortedlevel == deviceLevel) {
     *             return false;
     *         }
     *     }
     *     return false; // Should never reach here
     * }
     * </code></pre>
     * <p>At a high level, the levels are:</p>
     * <ul>
     * <li><code>LEGACY</code> devices operate in a backwards-compatibility mode for older
     *   Android devices, and have very limited capabilities.</li>
     * <li><code>LIMITED</code> devices represent the
     *   baseline feature set, and may also include additional capabilities that are
     *   subsets of <code>FULL</code>.</li>
     * <li><code>FULL</code> devices additionally support per-frame manual control of sensor, flash, lens and
     *   post-processing settings, and image capture at a high rate.</li>
     * <li><code>LEVEL_3</code> devices additionally support YUV reprocessing and RAW image capture, along
     *   with additional output stream configurations.</li>
     * <li><code>EXTERNAL</code> devices are similar to <code>LIMITED</code> devices with exceptions like some sensor or
     *   lens information not reorted or less stable framerates.</li>
     * </ul>
     * <p>See the individual level enums for full descriptions of the supported capabilities.  The
     * {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} entry describes the device's capabilities at a
     * finer-grain level, if needed. In addition, many controls have their available settings or
     * ranges defined in individual entries from {@link android.hardware.camera2.CameraCharacteristics }.</p>
     * <p>Some features are not part of any particular hardware level or capability and must be
     * queried separately. These include:</p>
     * <ul>
     * <li>Calibrated timestamps ({@link CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE android.sensor.info.timestampSource} <code>==</code> REALTIME)</li>
     * <li>Precision lens control ({@link CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION android.lens.info.focusDistanceCalibration} <code>==</code> CALIBRATED)</li>
     * <li>Face detection ({@link CameraCharacteristics#STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES android.statistics.info.availableFaceDetectModes})</li>
     * <li>Optical or electrical image stabilization
     *   ({@link CameraCharacteristics#LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION android.lens.info.availableOpticalStabilization},
     *    {@link CameraCharacteristics#CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES android.control.availableVideoStabilizationModes})</li>
     * </ul>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED}</li>
     *   <li>{@link #INFO_SUPPORTED_HARDWARE_LEVEL_FULL FULL}</li>
     *   <li>{@link #INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY LEGACY}</li>
     *   <li>{@link #INFO_SUPPORTED_HARDWARE_LEVEL_3 3}</li>
     *   <li>{@link #INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL EXTERNAL}</li>
     * </ul></p>
     * <p>This key is available on all devices.</p>
     *
     * @see CameraCharacteristics#CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES
     * @see CameraCharacteristics#LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
     * @see CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
     * @see CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
     * @see CameraCharacteristics#STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
     * @see #INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED
     * @see #INFO_SUPPORTED_HARDWARE_LEVEL_FULL
     * @see #INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY
     * @see #INFO_SUPPORTED_HARDWARE_LEVEL_3
     * @see #INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL
     */
    @PublicKey
    public static final Key<Integer> INFO_SUPPORTED_HARDWARE_LEVEL =
            new Key<Integer>("android.info.supportedHardwareLevel", int.class);

    
A short string for manufacturer version information about the camera device, such as
ISP hardware, sensors, etc.


This can be used in TAG_IMAGE_DESCRIPTION in jpeg EXIF. This key may be absent if no version information is available on the device.


Optional - This value may be null on some devices.


/**
     * <p>A short string for manufacturer version information about the camera device, such as
     * ISP hardware, sensors, etc.</p>
     * <p>This can be used in {@link android.media.ExifInterface#TAG_IMAGE_DESCRIPTION TAG_IMAGE_DESCRIPTION}
     * in jpeg EXIF. This key may be absent if no version information is available on the
     * device.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     */
    @PublicKey
    public static final Key<String> INFO_VERSION =
            new Key<String>("android.info.version", String.class);

    
The maximum number of frames that can occur after a request
(different than the previous) has been submitted, and before the
result's state becomes synchronized.


This defines the maximum distance (in number of metadata results),
between the frame number of the request that has new controls to apply
and the frame number of the result that has all the controls applied.


In other words this acts as an upper boundary for how many frames
must occur before the camera device knows for a fact that the new
submitted camera settings have been applied in outgoing frames.


Units: Frame counts


Possible values:



Available values for this device:

A positive value, PER_FRAME_CONTROL, or UNKNOWN.


This key is available on all devices.


See Also:
/**
     * <p>The maximum number of frames that can occur after a request
     * (different than the previous) has been submitted, and before the
     * result's state becomes synchronized.</p>
     * <p>This defines the maximum distance (in number of metadata results),
     * between the frame number of the request that has new controls to apply
     * and the frame number of the result that has all the controls applied.</p>
     * <p>In other words this acts as an upper boundary for how many frames
     * must occur before the camera device knows for a fact that the new
     * submitted camera settings have been applied in outgoing frames.</p>
     * <p><b>Units</b>: Frame counts</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #SYNC_MAX_LATENCY_PER_FRAME_CONTROL PER_FRAME_CONTROL}</li>
     *   <li>{@link #SYNC_MAX_LATENCY_UNKNOWN UNKNOWN}</li>
     * </ul></p>
     * <p><b>Available values for this device:</b><br>
     * A positive value, PER_FRAME_CONTROL, or UNKNOWN.</p>
     * <p>This key is available on all devices.</p>
     * @see #SYNC_MAX_LATENCY_PER_FRAME_CONTROL
     * @see #SYNC_MAX_LATENCY_UNKNOWN
     */
    @PublicKey
    public static final Key<Integer> SYNC_MAX_LATENCY =
            new Key<Integer>("android.sync.maxLatency", int.class);

    
The maximal camera capture pipeline stall (in unit of frame count) introduced by a
reprocess capture request.


The key describes the maximal interference that one reprocess (input) request
can introduce to the camera simultaneous streaming of regular (output) capture
requests, including repeating requests.


When a reprocessing capture request is submitted while a camera output repeating request
(e.g. preview) is being served by the camera device, it may preempt the camera capture
pipeline for at least one frame duration so that the camera device is unable to process
the following capture request in time for the next sensor start of exposure boundary.
When this happens, the application may observe a capture time gap (longer than one frame
duration) between adjacent capture output frames, which usually exhibits as preview
glitch if the repeating request output targets include a preview surface. This key gives
the worst-case number of frame stall introduced by one reprocess request with any kind of
formats/sizes combination.


If this key reports 0, it means a reprocess request doesn't introduce any glitch to the
ongoing camera repeating request outputs, as if this reprocess request is never issued.


This key is supported if the camera device supports PRIVATE or YUV reprocessing ( i.e. android.request.availableCapabilities contains PRIVATE_REPROCESSING or YUV_REPROCESSING).


Units: Number of frames.


Range of valid values:

<= 4


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>The maximal camera capture pipeline stall (in unit of frame count) introduced by a
     * reprocess capture request.</p>
     * <p>The key describes the maximal interference that one reprocess (input) request
     * can introduce to the camera simultaneous streaming of regular (output) capture
     * requests, including repeating requests.</p>
     * <p>When a reprocessing capture request is submitted while a camera output repeating request
     * (e.g. preview) is being served by the camera device, it may preempt the camera capture
     * pipeline for at least one frame duration so that the camera device is unable to process
     * the following capture request in time for the next sensor start of exposure boundary.
     * When this happens, the application may observe a capture time gap (longer than one frame
     * duration) between adjacent capture output frames, which usually exhibits as preview
     * glitch if the repeating request output targets include a preview surface. This key gives
     * the worst-case number of frame stall introduced by one reprocess request with any kind of
     * formats/sizes combination.</p>
     * <p>If this key reports 0, it means a reprocess request doesn't introduce any glitch to the
     * ongoing camera repeating request outputs, as if this reprocess request is never issued.</p>
     * <p>This key is supported if the camera device supports PRIVATE or YUV reprocessing (
     * i.e. {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains PRIVATE_REPROCESSING or
     * YUV_REPROCESSING).</p>
     * <p><b>Units</b>: Number of frames.</p>
     * <p><b>Range of valid values:</b><br>
     * &lt;= 4</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
     */
    @PublicKey
    public static final Key<Integer> REPROCESS_MAX_CAPTURE_STALL =
            new Key<Integer>("android.reprocess.maxCaptureStall", int.class);

    
The available depth dataspace stream
configurations that this camera device supports
(i.e. format, width, height, output/input stream).


These are output stream configurations for use with
dataSpace HAL_DATASPACE_DEPTH. The configurations are
listed as (format, width, height, input?) tuples.


Only devices that support depth output for at least
the HAL_PIXEL_FORMAT_Y16 dense depth map may include
this entry.


A device that also supports the HAL_PIXEL_FORMAT_BLOB
sparse depth point cloud must report a single entry for
the format in this list as (HAL_PIXEL_FORMAT_BLOB,
android.depth.maxDepthSamples, 1, OUTPUT) in addition to
the entries for HAL_PIXEL_FORMAT_Y16.


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
@hide
/**
     * <p>The available depth dataspace stream
     * configurations that this camera device supports
     * (i.e. format, width, height, output/input stream).</p>
     * <p>These are output stream configurations for use with
     * dataSpace HAL_DATASPACE_DEPTH. The configurations are
     * listed as <code>(format, width, height, input?)</code> tuples.</p>
     * <p>Only devices that support depth output for at least
     * the HAL_PIXEL_FORMAT_Y16 dense depth map may include
     * this entry.</p>
     * <p>A device that also supports the HAL_PIXEL_FORMAT_BLOB
     * sparse depth point cloud must report a single entry for
     * the format in this list as <code>(HAL_PIXEL_FORMAT_BLOB,
     * android.depth.maxDepthSamples, 1, OUTPUT)</code> in addition to
     * the entries for HAL_PIXEL_FORMAT_Y16.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @hide
     */
    public static final Key<android.hardware.camera2.params.StreamConfiguration[]> DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS =
            new Key<android.hardware.camera2.params.StreamConfiguration[]>("android.depth.availableDepthStreamConfigurations", android.hardware.camera2.params.StreamConfiguration[].class);

    
This lists the minimum frame duration for each
format/size combination for depth output formats.


This should correspond to the frame duration when only that
stream is active, with all processing (typically in android.*.mode)
set to either OFF or FAST.


When multiple streams are used in a request, the minimum frame
duration will be max(individual stream min durations).


The minimum frame duration of a stream (of a particular format, size)
is the same regardless of whether the stream is input or output.


See android.sensor.frameDuration and android.scaler.availableStallDurations for more details about calculating the max frame rate.


Units: (format, width, height, ns) x n


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
@hide
/**
     * <p>This lists the minimum frame duration for each
     * format/size combination for depth output formats.</p>
     * <p>This should correspond to the frame duration when only that
     * stream is active, with all processing (typically in android.*.mode)
     * set to either OFF or FAST.</p>
     * <p>When multiple streams are used in a request, the minimum frame
     * duration will be max(individual stream min durations).</p>
     * <p>The minimum frame duration of a stream (of a particular format, size)
     * is the same regardless of whether the stream is input or output.</p>
     * <p>See {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration} and
     * android.scaler.availableStallDurations for more details about
     * calculating the max frame rate.</p>
     * <p><b>Units</b>: (format, width, height, ns) x n</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see CaptureRequest#SENSOR_FRAME_DURATION
     * @hide
     */
    public static final Key<android.hardware.camera2.params.StreamConfigurationDuration[]> DEPTH_AVAILABLE_DEPTH_MIN_FRAME_DURATIONS =
            new Key<android.hardware.camera2.params.StreamConfigurationDuration[]>("android.depth.availableDepthMinFrameDurations", android.hardware.camera2.params.StreamConfigurationDuration[].class);

    
This lists the maximum stall duration for each
output format/size combination for depth streams.


A stall duration is how much extra time would get added
to the normal minimum frame duration for a repeating request
that has streams with non-zero stall.


This functions similarly to
android.scaler.availableStallDurations for depth
streams.


All depth output stream formats may have a nonzero stall
duration.


Units: (format, width, height, ns) x n


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
@hide
/**
     * <p>This lists the maximum stall duration for each
     * output format/size combination for depth streams.</p>
     * <p>A stall duration is how much extra time would get added
     * to the normal minimum frame duration for a repeating request
     * that has streams with non-zero stall.</p>
     * <p>This functions similarly to
     * android.scaler.availableStallDurations for depth
     * streams.</p>
     * <p>All depth output stream formats may have a nonzero stall
     * duration.</p>
     * <p><b>Units</b>: (format, width, height, ns) x n</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @hide
     */
    public static final Key<android.hardware.camera2.params.StreamConfigurationDuration[]> DEPTH_AVAILABLE_DEPTH_STALL_DURATIONS =
            new Key<android.hardware.camera2.params.StreamConfigurationDuration[]>("android.depth.availableDepthStallDurations", android.hardware.camera2.params.StreamConfigurationDuration[].class);

    
Indicates whether a capture request may target both a
DEPTH16 / DEPTH_POINT_CLOUD output, and normal color outputs (such as
YUV_420_888, JPEG, or RAW) simultaneously.


If TRUE, including both depth and color outputs in a single
capture request is not supported. An application must interleave color
and depth requests.  If FALSE, a single request can target both types
of output.


Typically, this restriction exists on camera devices that
need to emit a specific pattern or wavelength of light to
measure depth values, which causes the color image to be
corrupted during depth measurement.


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>Indicates whether a capture request may target both a
     * DEPTH16 / DEPTH_POINT_CLOUD output, and normal color outputs (such as
     * YUV_420_888, JPEG, or RAW) simultaneously.</p>
     * <p>If TRUE, including both depth and color outputs in a single
     * capture request is not supported. An application must interleave color
     * and depth requests.  If FALSE, a single request can target both types
     * of output.</p>
     * <p>Typically, this restriction exists on camera devices that
     * need to emit a specific pattern or wavelength of light to
     * measure depth values, which causes the color image to be
     * corrupted during depth measurement.</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     */
    @PublicKey
    public static final Key<Boolean> DEPTH_DEPTH_IS_EXCLUSIVE =
            new Key<Boolean>("android.depth.depthIsExclusive", boolean.class);

    
String containing the ids of the underlying physical cameras.


For a logical camera, this is concatenation of all underlying physical camera ids.
The null terminator for physical camera id must be preserved so that the whole string
can be tokenized using '\0' to generate list of physical camera ids.


For example, if the physical camera ids of the logical camera are "2" and "3", the
value of this tag will be ['2', '\0', '3', '\0'].


The number of physical camera ids must be no less than 2.


Units: UTF-8 null-terminated string


Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
@hide
/**
     * <p>String containing the ids of the underlying physical cameras.</p>
     * <p>For a logical camera, this is concatenation of all underlying physical camera ids.
     * The null terminator for physical camera id must be preserved so that the whole string
     * can be tokenized using '\0' to generate list of physical camera ids.</p>
     * <p>For example, if the physical camera ids of the logical camera are "2" and "3", the
     * value of this tag will be ['2', '\0', '3', '\0'].</p>
     * <p>The number of physical camera ids must be no less than 2.</p>
     * <p><b>Units</b>: UTF-8 null-terminated string</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @hide
     */
    public static final Key<byte[]> LOGICAL_MULTI_CAMERA_PHYSICAL_IDS =
            new Key<byte[]>("android.logicalMultiCamera.physicalIds", byte[].class);

    
The accuracy of frame timestamp synchronization between physical cameras


The accuracy of the frame timestamp synchronization determines the physical cameras'
ability to start exposure at the same time. If the sensorSyncType is CALIBRATED,
the physical camera sensors usually run in master-slave mode so that their shutter
time is synchronized. For APPROXIMATE sensorSyncType, the camera sensors usually run in
master-master mode, and there could be offset between their start of exposure.


In both cases, all images generated for a particular capture request still carry the same
timestamps, so that they can be used to look up the matching frame number and
onCaptureStarted callback.


Possible values:



Optional - This value may be null on some devices.


Limited capability - Present on all camera devices that report being at least HARDWARE_LEVEL_LIMITED devices in the android.info.supportedHardwareLevel key


See Also:
/**
     * <p>The accuracy of frame timestamp synchronization between physical cameras</p>
     * <p>The accuracy of the frame timestamp synchronization determines the physical cameras'
     * ability to start exposure at the same time. If the sensorSyncType is CALIBRATED,
     * the physical camera sensors usually run in master-slave mode so that their shutter
     * time is synchronized. For APPROXIMATE sensorSyncType, the camera sensors usually run in
     * master-master mode, and there could be offset between their start of exposure.</p>
     * <p>In both cases, all images generated for a particular capture request still carry the same
     * timestamps, so that they can be used to look up the matching frame number and
     * onCaptureStarted callback.</p>
     * <p><b>Possible values:</b>
     * <ul>
     *   <li>{@link #LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_APPROXIMATE APPROXIMATE}</li>
     *   <li>{@link #LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_CALIBRATED CALIBRATED}</li>
     * </ul></p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     * <p><b>Limited capability</b> -
     * Present on all camera devices that report being at least {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED HARDWARE_LEVEL_LIMITED} devices in the
     * {@link CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL android.info.supportedHardwareLevel} key</p>
     *
     * @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
     * @see #LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_APPROXIMATE
     * @see #LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_CALIBRATED
     */
    @PublicKey
    public static final Key<Integer> LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE =
            new Key<Integer>("android.logicalMultiCamera.sensorSyncType", int.class);

    
List of distortion correction modes for android.distortionCorrection.mode that are supported by this camera device.


No device is required to support this API; such devices will always list only 'OFF'.
All devices that support this API will list both FAST and HIGH_QUALITY.


Range of valid values:
 Any value listed in android.distortionCorrection.mode


Optional - This value may be null on some devices.


See Also:
/**
     * <p>List of distortion correction modes for {@link CaptureRequest#DISTORTION_CORRECTION_MODE android.distortionCorrection.mode} that are
     * supported by this camera device.</p>
     * <p>No device is required to support this API; such devices will always list only 'OFF'.
     * All devices that support this API will list both FAST and HIGH_QUALITY.</p>
     * <p><b>Range of valid values:</b><br>
     * Any value listed in {@link CaptureRequest#DISTORTION_CORRECTION_MODE android.distortionCorrection.mode}</p>
     * <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
     *
     * @see CaptureRequest#DISTORTION_CORRECTION_MODE
     */
    @PublicKey
    public static final Key<int[]> DISTORTION_CORRECTION_AVAILABLE_MODES =
            new Key<int[]>("android.distortionCorrection.availableModes", int[].class);

    /*~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
     * End generated code
     *~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~O@*/



}