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android / platform / frameworks / base / 2813b0f / . / core / java / android / hardware / camera2 / CaptureResult.java
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/*
* Copyright (C) 2012 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.CaptureResultExtras;
import android.hardware.camera2.impl.PublicKey;
import android.hardware.camera2.impl.SyntheticKey;
import android.hardware.camera2.utils.TypeReference;
import android.util.Log;
import android.util.Rational;
import java.util.List;
/**
* <p>The subset of the results of a single image capture from the image sensor.</p>
*
* <p>Contains a subset of the final configuration for the capture hardware (sensor, lens,
* flash), the processing pipeline, the control algorithms, and the output
* buffers.</p>
*
* <p>CaptureResults are produced by a {@link CameraDevice} after processing a
* {@link CaptureRequest}. All properties listed for capture requests can also
* be queried on the capture result, to determine the final values used for
* capture. The result also includes additional metadata about the state of the
* camera device during the capture.</p>
*
* <p>Not all properties returned by {@link CameraCharacteristics#getAvailableCaptureResultKeys()}
* are necessarily available. Some results are {@link CaptureResult partial} and will
* not have every key set. Only {@link TotalCaptureResult total} results are guaranteed to have
* every key available that was enabled by the request.</p>
*
* <p>{@link CaptureResult} objects are immutable.</p>
*
*/
public class CaptureResult extends CameraMetadata<CaptureResult.Key<?>> {
private static final String TAG = "CaptureResult";
private static final boolean VERBOSE = false;
/**
* A {@code Key} is used to do capture result field lookups with
* {@link CaptureResult#get}.
*
* <p>For example, to get the timestamp corresponding to the exposure of the first row:
* <code><pre>
* long timestamp = captureResult.get(CaptureResult.SENSOR_TIMESTAMP);
* </pre></code>
* </p>
*
* <p>To enumerate over all possible keys for {@link CaptureResult}, see
* {@link CameraCharacteristics#getAvailableCaptureResultKeys}.</p>
*
* @see CaptureResult#get
* @see CameraCharacteristics#getAvailableCaptureResultKeys
*/
public final static class Key<T> {
private final CameraMetadataNative.Key<T> mKey;
/**
* 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
*/
public Key(String name, TypeReference<T> typeReference) {
mKey = new CameraMetadataNative.Key<T>(name, typeReference);
}
/**
* 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();
}
/**
* {@inheritDoc}
*/
@Override
public final int hashCode() {
return mKey.hashCode();
}
/**
* {@inheritDoc}
*/
@SuppressWarnings("unchecked")
@Override
public final boolean equals(Object o) {
return o instanceof Key && ((Key<T>)o).mKey.equals(mKey);
}
/**
* Return this {@link Key} as a string representation.
*
* <p>{@code "CaptureResult.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("CaptureResult.Key(%s)", mKey.getName());
}
/**
* 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({ "unchecked" })
/*package*/ Key(CameraMetadataNative.Key<?> nativeKey) {
mKey = (CameraMetadataNative.Key<T>) nativeKey;
}
}
private final CameraMetadataNative mResults;
private final CaptureRequest mRequest;
private final int mSequenceId;
private final long mFrameNumber;
/**
* Takes ownership of the passed-in properties object
*
* <p>For internal use only</p>
* @hide
*/
public CaptureResult(CameraMetadataNative results, CaptureRequest parent,
CaptureResultExtras extras) {
if (results == null) {
throw new IllegalArgumentException("results was null");
}
if (parent == null) {
throw new IllegalArgumentException("parent was null");
}
if (extras == null) {
throw new IllegalArgumentException("extras was null");
}
mResults = CameraMetadataNative.move(results);
if (mResults.isEmpty()) {
throw new AssertionError("Results must not be empty");
}
mRequest = parent;
mSequenceId = extras.getRequestId();
mFrameNumber = extras.getFrameNumber();
}
/**
* Returns a copy of the underlying {@link CameraMetadataNative}.
* @hide
*/
public CameraMetadataNative getNativeCopy() {
return new CameraMetadataNative(mResults);
}
/**
* Creates a request-less result.
*
* <p><strong>For testing only.</strong></p>
* @hide
*/
public CaptureResult(CameraMetadataNative results, int sequenceId) {
if (results == null) {
throw new IllegalArgumentException("results was null");
}
mResults = CameraMetadataNative.move(results);
if (mResults.isEmpty()) {
throw new AssertionError("Results must not be empty");
}
mRequest = null;
mSequenceId = sequenceId;
mFrameNumber = -1;
}
/**
* Get a capture result field value.
*
* <p>The field definitions can be found in {@link CaptureResult}.</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 result 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) {
T value = mResults.get(key);
if (VERBOSE) Log.v(TAG, "#get for Key = " + key.getName() + ", returned value = " + value);
return value;
}
/**
* {@inheritDoc}
* @hide
*/
@SuppressWarnings("unchecked")
@Override
protected <T> T getProtected(Key<?> key) {
return (T) mResults.get(key);
}
/**
* {@inheritDoc}
* @hide
*/
@SuppressWarnings("unchecked")
@Override
protected Class<Key<?>> getKeyClass() {
Object thisClass = Key.class;
return (Class<Key<?>>)thisClass;
}
/**
* Dumps the native metadata contents to logcat.
*
* <p>Visibility for testing/debugging only. The results will not
* include any synthesized keys, as they are invisible to the native layer.</p>
*
* @hide
*/
public void dumpToLog() {
mResults.dumpToLog();
}
/**
* {@inheritDoc}
*/
@Override
@NonNull
public List<Key<?>> getKeys() {
// Force the javadoc for this function to show up on the CaptureResult page
return super.getKeys();
}
/**
* Get the request associated with this result.
*
* <p>Whenever a request has been fully or partially captured, with
* {@link CameraCaptureSession.CaptureCallback#onCaptureCompleted} or
* {@link CameraCaptureSession.CaptureCallback#onCaptureProgressed}, the {@code result}'s
* {@code getRequest()} will return that {@code request}.
* </p>
*
* <p>For example,
* <code><pre>cameraDevice.capture(someRequest, new CaptureCallback() {
* {@literal @}Override
* void onCaptureCompleted(CaptureRequest myRequest, CaptureResult myResult) {
* assert(myResult.getRequest.equals(myRequest) == true);
* }
* }, null);
* </code></pre>
* </p>
*
* @return The request associated with this result. Never {@code null}.
*/
@NonNull
public CaptureRequest getRequest() {
return mRequest;
}
/**
* Get the frame number associated with this result.
*
* <p>Whenever a request has been processed, regardless of failure or success,
* it gets a unique frame number assigned to its future result/failure.</p>
*
* <p>For the same type of request (capturing from the camera device or reprocessing), this
* value monotonically increments, starting with 0, for every new result or failure and the
* scope is the lifetime of the {@link CameraDevice}. Between different types of requests,
* the frame number may not monotonically increment. For example, the frame number of a newer
* reprocess result may be smaller than the frame number of an older result of capturing new
* images from the camera device, but the frame number of a newer reprocess result will never be
* smaller than the frame number of an older reprocess result.</p>
*
* @return The frame number
*
* @see CameraDevice#createCaptureRequest
* @see CameraDevice#createReprocessCaptureRequest
*/
public long getFrameNumber() {
return mFrameNumber;
}
/**
* The sequence ID for this failure that was returned by the
* {@link CameraCaptureSession#capture} family of functions.
*
* <p>The sequence ID is a unique monotonically increasing value starting from 0,
* incremented every time a new group of requests is submitted to the CameraDevice.</p>
*
* @return int The ID for the sequence of requests that this capture result is a part of
*
* @see CameraDevice.CaptureCallback#onCaptureSequenceCompleted
* @see CameraDevice.CaptureCallback#onCaptureSequenceAborted
*/
public int getSequenceId() {
return mSequenceId;
}
/*@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.
*~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~*/
/**
* <p>The mode control selects how the image data is converted from the
* sensor's native color into linear sRGB color.</p>
* <p>When auto-white balance (AWB) is enabled with {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, this
* control is overridden by the AWB routine. When AWB is disabled, the
* application controls how the color mapping is performed.</p>
* <p>We define the expected processing pipeline below. For consistency
* across devices, this is always the case with TRANSFORM_MATRIX.</p>
* <p>When either FULL or HIGH_QUALITY is used, the camera device may
* do additional processing but {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} and
* {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} will still be provided by the
* camera device (in the results) and be roughly correct.</p>
* <p>Switching to TRANSFORM_MATRIX and using the data provided from
* FAST or HIGH_QUALITY will yield a picture with the same white point
* as what was produced by the camera device in the earlier frame.</p>
* <p>The expected processing pipeline is as follows:</p>
* <p><img alt="White balance processing pipeline" src="../../../../images/camera2/metadata/android.colorCorrection.mode/processing_pipeline.png" /></p>
* <p>The white balance is encoded by two values, a 4-channel white-balance
* gain vector (applied in the Bayer domain), and a 3x3 color transform
* matrix (applied after demosaic).</p>
* <p>The 4-channel white-balance gains are defined as:</p>
* <pre><code>{@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} = [ R G_even G_odd B ]
* </code></pre>
* <p>where <code>G_even</code> is the gain for green pixels on even rows of the
* output, and <code>G_odd</code> is the gain for green pixels on the odd rows.
* These may be identical for a given camera device implementation; if
* the camera device does not support a separate gain for even/odd green
* channels, it will use the <code>G_even</code> value, and write <code>G_odd</code> equal to
* <code>G_even</code> in the output result metadata.</p>
* <p>The matrices for color transforms are defined as a 9-entry vector:</p>
* <pre><code>{@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform} = [ I0 I1 I2 I3 I4 I5 I6 I7 I8 ]
* </code></pre>
* <p>which define a transform from input sensor colors, <code>P_in = [ r g b ]</code>,
* to output linear sRGB, <code>P_out = [ r' g' b' ]</code>,</p>
* <p>with colors as follows:</p>
* <pre><code>r' = I0r + I1g + I2b
* g' = I3r + I4g + I5b
* b' = I6r + I7g + I8b
* </code></pre>
* <p>Both the input and output value ranges must match. Overflow/underflow
* values are clipped to fit within the range.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #COLOR_CORRECTION_MODE_TRANSFORM_MATRIX TRANSFORM_MATRIX}</li>
* <li>{@link #COLOR_CORRECTION_MODE_FAST FAST}</li>
* <li>{@link #COLOR_CORRECTION_MODE_HIGH_QUALITY HIGH_QUALITY}</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 CaptureRequest#COLOR_CORRECTION_GAINS
* @see CaptureRequest#COLOR_CORRECTION_TRANSFORM
* @see CaptureRequest#CONTROL_AWB_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see #COLOR_CORRECTION_MODE_TRANSFORM_MATRIX
* @see #COLOR_CORRECTION_MODE_FAST
* @see #COLOR_CORRECTION_MODE_HIGH_QUALITY
*/
@PublicKey
public static final Key<Integer> COLOR_CORRECTION_MODE =
new Key<Integer>("android.colorCorrection.mode", int.class);
/**
* <p>A color transform matrix to use to transform
* from sensor RGB color space to output linear sRGB color space.</p>
* <p>This matrix is either set by the camera device when the request
* {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is not TRANSFORM_MATRIX, or
* directly by the application in the request when the
* {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is TRANSFORM_MATRIX.</p>
* <p>In the latter case, the camera device may round the matrix to account
* for precision issues; the final rounded matrix should be reported back
* in this matrix result metadata. The transform should keep the magnitude
* of the output color values within <code>[0, 1.0]</code> (assuming input color
* values is within the normalized range <code>[0, 1.0]</code>), or clipping may occur.</p>
* <p>The valid range of each matrix element varies on different devices, but
* values within [-1.5, 3.0] are guaranteed not to be clipped.</p>
* <p><b>Units</b>: Unitless scale factors</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#COLOR_CORRECTION_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
*/
@PublicKey
public static final Key<android.hardware.camera2.params.ColorSpaceTransform> COLOR_CORRECTION_TRANSFORM =
new Key<android.hardware.camera2.params.ColorSpaceTransform>("android.colorCorrection.transform", android.hardware.camera2.params.ColorSpaceTransform.class);
/**
* <p>Gains applying to Bayer raw color channels for
* white-balance.</p>
* <p>These per-channel gains are either set by the camera device
* when the request {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is not
* TRANSFORM_MATRIX, or directly by the application in the
* request when the {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} is
* TRANSFORM_MATRIX.</p>
* <p>The gains in the result metadata are the gains actually
* applied by the camera device to the current frame.</p>
* <p>The valid range of gains varies on different devices, but gains
* between [1.0, 3.0] are guaranteed not to be clipped. Even if a given
* device allows gains below 1.0, this is usually not recommended because
* this can create color artifacts.</p>
* <p><b>Units</b>: Unitless gain factors</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#COLOR_CORRECTION_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
*/
@PublicKey
public static final Key<android.hardware.camera2.params.RggbChannelVector> COLOR_CORRECTION_GAINS =
new Key<android.hardware.camera2.params.RggbChannelVector>("android.colorCorrection.gains", android.hardware.camera2.params.RggbChannelVector.class);
/**
* <p>Mode of operation for the chromatic aberration correction algorithm.</p>
* <p>Chromatic (color) aberration is caused by the fact that different wavelengths of light
* can not focus on the same point after exiting from the lens. This metadata defines
* the high level control of chromatic aberration correction algorithm, which aims to
* minimize the chromatic artifacts that may occur along the object boundaries in an
* image.</p>
* <p>FAST/HIGH_QUALITY both mean that camera device determined aberration
* correction will be applied. HIGH_QUALITY mode indicates that the camera device will
* use the highest-quality aberration correction algorithms, even if it slows down
* capture rate. FAST means the camera device will not slow down capture rate when
* applying aberration correction.</p>
* <p>LEGACY devices will always be in FAST mode.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #COLOR_CORRECTION_ABERRATION_MODE_OFF OFF}</li>
* <li>{@link #COLOR_CORRECTION_ABERRATION_MODE_FAST FAST}</li>
* <li>{@link #COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES android.colorCorrection.availableAberrationModes}</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
* @see #COLOR_CORRECTION_ABERRATION_MODE_OFF
* @see #COLOR_CORRECTION_ABERRATION_MODE_FAST
* @see #COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY
*/
@PublicKey
public static final Key<Integer> COLOR_CORRECTION_ABERRATION_MODE =
new Key<Integer>("android.colorCorrection.aberrationMode", int.class);
/**
* <p>The desired setting for the camera device's auto-exposure
* algorithm's antibanding compensation.</p>
* <p>Some kinds of lighting fixtures, such as some fluorescent
* lights, flicker at the rate of the power supply frequency
* (60Hz or 50Hz, depending on country). While this is
* typically not noticeable to a person, it can be visible to
* a camera device. If a camera sets its exposure time to the
* wrong value, the flicker may become visible in the
* viewfinder as flicker or in a final captured image, as a
* set of variable-brightness bands across the image.</p>
* <p>Therefore, the auto-exposure routines of camera devices
* include antibanding routines that ensure that the chosen
* exposure value will not cause such banding. The choice of
* exposure time depends on the rate of flicker, which the
* camera device can detect automatically, or the expected
* rate can be selected by the application using this
* control.</p>
* <p>A given camera device may not support all of the possible
* options for the antibanding mode. The
* {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_ANTIBANDING_MODES android.control.aeAvailableAntibandingModes} key contains
* the available modes for a given camera device.</p>
* <p>AUTO mode is the default if it is available on given
* camera device. When AUTO mode is not available, the
* default will be either 50HZ or 60HZ, and both 50HZ
* and 60HZ will be available.</p>
* <p>If manual exposure control is enabled (by setting
* {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} or {@link CaptureRequest#CONTROL_MODE android.control.mode} to OFF),
* then this setting has no effect, and the application must
* ensure it selects exposure times that do not cause banding
* issues. The {@link CaptureResult#STATISTICS_SCENE_FLICKER android.statistics.sceneFlicker} key can assist
* the application in this.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_AE_ANTIBANDING_MODE_OFF OFF}</li>
* <li>{@link #CONTROL_AE_ANTIBANDING_MODE_50HZ 50HZ}</li>
* <li>{@link #CONTROL_AE_ANTIBANDING_MODE_60HZ 60HZ}</li>
* <li>{@link #CONTROL_AE_ANTIBANDING_MODE_AUTO AUTO}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br></p>
* <p>{@link CameraCharacteristics#CONTROL_AE_AVAILABLE_ANTIBANDING_MODES android.control.aeAvailableAntibandingModes}</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#CONTROL_AE_AVAILABLE_ANTIBANDING_MODES
* @see CaptureRequest#CONTROL_AE_MODE
* @see CaptureRequest#CONTROL_MODE
* @see CaptureResult#STATISTICS_SCENE_FLICKER
* @see #CONTROL_AE_ANTIBANDING_MODE_OFF
* @see #CONTROL_AE_ANTIBANDING_MODE_50HZ
* @see #CONTROL_AE_ANTIBANDING_MODE_60HZ
* @see #CONTROL_AE_ANTIBANDING_MODE_AUTO
*/
@PublicKey
public static final Key<Integer> CONTROL_AE_ANTIBANDING_MODE =
new Key<Integer>("android.control.aeAntibandingMode", int.class);
/**
* <p>Adjustment to auto-exposure (AE) target image
* brightness.</p>
* <p>The adjustment is measured as a count of steps, with the
* step size defined by {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP android.control.aeCompensationStep} and the
* allowed range by {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_RANGE android.control.aeCompensationRange}.</p>
* <p>For example, if the exposure value (EV) step is 0.333, '6'
* will mean an exposure compensation of +2 EV; -3 will mean an
* exposure compensation of -1 EV. One EV represents a doubling
* of image brightness. Note that this control will only be
* effective if {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} <code>!=</code> OFF. This control
* will take effect even when {@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} <code>== true</code>.</p>
* <p>In the event of exposure compensation value being changed, camera device
* may take several frames to reach the newly requested exposure target.
* During that time, {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} field will be in the SEARCHING
* state. Once the new exposure target is reached, {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} will
* change from SEARCHING to either CONVERGED, LOCKED (if AE lock is enabled), or
* FLASH_REQUIRED (if the scene is too dark for still capture).</p>
* <p><b>Units</b>: Compensation steps</p>
* <p><b>Range of valid values:</b><br>
* {@link CameraCharacteristics#CONTROL_AE_COMPENSATION_RANGE android.control.aeCompensationRange}</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#CONTROL_AE_COMPENSATION_RANGE
* @see CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP
* @see CaptureRequest#CONTROL_AE_LOCK
* @see CaptureRequest#CONTROL_AE_MODE
* @see CaptureResult#CONTROL_AE_STATE
*/
@PublicKey
public static final Key<Integer> CONTROL_AE_EXPOSURE_COMPENSATION =
new Key<Integer>("android.control.aeExposureCompensation", int.class);
/**
* <p>Whether auto-exposure (AE) is currently locked to its latest
* calculated values.</p>
* <p>When set to <code>true</code> (ON), the AE algorithm is locked to its latest parameters,
* and will not change exposure settings until the lock is set to <code>false</code> (OFF).</p>
* <p>Note that even when AE is locked, the flash may be fired if
* the {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is ON_AUTO_FLASH /
* ON_ALWAYS_FLASH / ON_AUTO_FLASH_REDEYE.</p>
* <p>When {@link CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION android.control.aeExposureCompensation} is changed, even if the AE lock
* is ON, the camera device will still adjust its exposure value.</p>
* <p>If AE precapture is triggered (see {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger})
* when AE is already locked, the camera device will not change the exposure time
* ({@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime}) and sensitivity ({@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity})
* parameters. The flash may be fired if the {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}
* is ON_AUTO_FLASH/ON_AUTO_FLASH_REDEYE and the scene is too dark. If the
* {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is ON_ALWAYS_FLASH, the scene may become overexposed.
* Similarly, AE precapture trigger CANCEL has no effect when AE is already locked.</p>
* <p>When an AE precapture sequence is triggered, AE unlock will not be able to unlock
* the AE if AE is locked by the camera device internally during precapture metering
* sequence In other words, submitting requests with AE unlock has no effect for an
* ongoing precapture metering sequence. Otherwise, the precapture metering sequence
* will never succeed in a sequence of preview requests where AE lock is always set
* to <code>false</code>.</p>
* <p>Since the camera device has a pipeline of in-flight requests, the settings that
* get locked do not necessarily correspond to the settings that were present in the
* latest capture result received from the camera device, since additional captures
* and AE updates may have occurred even before the result was sent out. If an
* application is switching between automatic and manual control and wishes to eliminate
* any flicker during the switch, the following procedure is recommended:</p>
* <ol>
* <li>Starting in auto-AE mode:</li>
* <li>Lock AE</li>
* <li>Wait for the first result to be output that has the AE locked</li>
* <li>Copy exposure settings from that result into a request, set the request to manual AE</li>
* <li>Submit the capture request, proceed to run manual AE as desired.</li>
* </ol>
* <p>See {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} for AE lock related state transition details.</p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION
* @see CaptureRequest#CONTROL_AE_MODE
* @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
* @see CaptureResult#CONTROL_AE_STATE
* @see CaptureRequest#SENSOR_EXPOSURE_TIME
* @see CaptureRequest#SENSOR_SENSITIVITY
*/
@PublicKey
public static final Key<Boolean> CONTROL_AE_LOCK =
new Key<Boolean>("android.control.aeLock", boolean.class);
/**
* <p>The desired mode for the camera device's
* auto-exposure routine.</p>
* <p>This control is only effective if {@link CaptureRequest#CONTROL_MODE android.control.mode} is
* AUTO.</p>
* <p>When set to any of the ON modes, the camera device's
* auto-exposure routine is enabled, overriding the
* application's selected exposure time, sensor sensitivity,
* and frame duration ({@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
* {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, and
* {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}). If one of the FLASH modes
* is selected, the camera device's flash unit controls are
* also overridden.</p>
* <p>The FLASH modes are only available if the camera device
* has a flash unit ({@link CameraCharacteristics#FLASH_INFO_AVAILABLE android.flash.info.available} is <code>true</code>).</p>
* <p>If flash TORCH mode is desired, this field must be set to
* ON or OFF, and {@link CaptureRequest#FLASH_MODE android.flash.mode} set to TORCH.</p>
* <p>When set to any of the ON modes, the values chosen by the
* camera device auto-exposure routine for the overridden
* fields for a given capture will be available in its
* CaptureResult.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_AE_MODE_OFF OFF}</li>
* <li>{@link #CONTROL_AE_MODE_ON ON}</li>
* <li>{@link #CONTROL_AE_MODE_ON_AUTO_FLASH ON_AUTO_FLASH}</li>
* <li>{@link #CONTROL_AE_MODE_ON_ALWAYS_FLASH ON_ALWAYS_FLASH}</li>
* <li>{@link #CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE ON_AUTO_FLASH_REDEYE}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_MODES android.control.aeAvailableModes}</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#CONTROL_AE_AVAILABLE_MODES
* @see CaptureRequest#CONTROL_MODE
* @see CameraCharacteristics#FLASH_INFO_AVAILABLE
* @see CaptureRequest#FLASH_MODE
* @see CaptureRequest#SENSOR_EXPOSURE_TIME
* @see CaptureRequest#SENSOR_FRAME_DURATION
* @see CaptureRequest#SENSOR_SENSITIVITY
* @see #CONTROL_AE_MODE_OFF
* @see #CONTROL_AE_MODE_ON
* @see #CONTROL_AE_MODE_ON_AUTO_FLASH
* @see #CONTROL_AE_MODE_ON_ALWAYS_FLASH
* @see #CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE
*/
@PublicKey
public static final Key<Integer> CONTROL_AE_MODE =
new Key<Integer>("android.control.aeMode", int.class);
/**
* <p>List of metering areas to use for auto-exposure adjustment.</p>
* <p>Not available if {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AE android.control.maxRegionsAe} is 0.
* Otherwise will always be present.</p>
* <p>The maximum number of regions supported by the device is determined by the value
* of {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AE android.control.maxRegionsAe}.</p>
* <p>The coordinate system is based on the active pixel array,
* with (0,0) being the top-left pixel in the active pixel array, and
* ({@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.width - 1,
* {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.height - 1) being the
* bottom-right pixel in the active pixel array.</p>
* <p>The weight must be within <code>[0, 1000]</code>, and represents a weight
* for every pixel in the area. This means that a large metering area
* with the same weight as a smaller area will have more effect in
* the metering result. Metering areas can partially overlap and the
* camera device will add the weights in the overlap region.</p>
* <p>The weights are relative to weights of other exposure metering regions, so if only one
* region is used, all non-zero weights will have the same effect. A region with 0
* weight is ignored.</p>
* <p>If all regions have 0 weight, then no specific metering area needs to be used by the
* camera device.</p>
* <p>If the metering region is outside the used {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion} returned in
* capture result metadata, the camera device will ignore the sections outside the crop
* region and output only the intersection rectangle as the metering region in the result
* metadata. If the region is entirely outside the crop region, it will be ignored and
* not reported in the result metadata.</p>
* <p><b>Units</b>: Pixel coordinates within {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
* <p><b>Range of valid values:</b><br>
* Coordinates must be between <code>[(0,0), (width, height))</code> of
* {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CameraCharacteristics#CONTROL_MAX_REGIONS_AE
* @see CaptureRequest#SCALER_CROP_REGION
* @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
@PublicKey
public static final Key<android.hardware.camera2.params.MeteringRectangle[]> CONTROL_AE_REGIONS =
new Key<android.hardware.camera2.params.MeteringRectangle[]>("android.control.aeRegions", android.hardware.camera2.params.MeteringRectangle[].class);
/**
* <p>Range over which the auto-exposure routine can
* adjust the capture frame rate to maintain good
* exposure.</p>
* <p>Only constrains auto-exposure (AE) algorithm, not
* manual control of {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime} and
* {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}.</p>
* <p><b>Units</b>: Frames per second (FPS)</p>
* <p><b>Range of valid values:</b><br>
* Any of the entries in {@link CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES android.control.aeAvailableTargetFpsRanges}</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
* @see CaptureRequest#SENSOR_EXPOSURE_TIME
* @see CaptureRequest#SENSOR_FRAME_DURATION
*/
@PublicKey
public static final Key<android.util.Range<Integer>> CONTROL_AE_TARGET_FPS_RANGE =
new Key<android.util.Range<Integer>>("android.control.aeTargetFpsRange", new TypeReference<android.util.Range<Integer>>() {{ }});
/**
* <p>Whether the camera device will trigger a precapture
* metering sequence when it processes this request.</p>
* <p>This entry is normally set to IDLE, or is not
* included at all in the request settings. When included and
* set to START, the camera device will trigger the auto-exposure (AE)
* precapture metering sequence.</p>
* <p>When set to CANCEL, the camera device will cancel any active
* precapture metering trigger, and return to its initial AE state.
* If a precapture metering sequence is already completed, and the camera
* device has implicitly locked the AE for subsequent still capture, the
* CANCEL trigger will unlock the AE and return to its initial AE state.</p>
* <p>The precapture sequence should be triggered before starting a
* high-quality still capture for final metering decisions to
* be made, and for firing pre-capture flash pulses to estimate
* scene brightness and required final capture flash power, when
* the flash is enabled.</p>
* <p>Normally, this entry should be set to START for only a
* single request, and the application should wait until the
* sequence completes before starting a new one.</p>
* <p>When a precapture metering sequence is finished, the camera device
* may lock the auto-exposure routine internally to be able to accurately expose the
* subsequent still capture image (<code>{@link CaptureRequest#CONTROL_CAPTURE_INTENT android.control.captureIntent} == STILL_CAPTURE</code>).
* For this case, the AE may not resume normal scan if no subsequent still capture is
* submitted. To ensure that the AE routine restarts normal scan, the application should
* submit a request with <code>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} == true</code>, followed by a request
* with <code>{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} == false</code>, if the application decides not to submit a
* still capture request after the precapture sequence completes. Alternatively, for
* API level 23 or newer devices, the CANCEL can be used to unlock the camera device
* internally locked AE if the application doesn't submit a still capture request after
* the AE precapture trigger. Note that, the CANCEL was added in API level 23, and must not
* be used in devices that have earlier API levels.</p>
* <p>The exact effect of auto-exposure (AE) precapture trigger
* depends on the current AE mode and state; see
* {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} for AE precapture state transition
* details.</p>
* <p>On LEGACY-level devices, the precapture trigger is not supported;
* capturing a high-resolution JPEG image will automatically trigger a
* precapture sequence before the high-resolution capture, including
* potentially firing a pre-capture flash.</p>
* <p>Using the precapture trigger and the auto-focus trigger {@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger}
* simultaneously is allowed. However, since these triggers often require cooperation between
* the auto-focus and auto-exposure routines (for example, the may need to be enabled for a
* focus sweep), the camera device may delay acting on a later trigger until the previous
* trigger has been fully handled. This may lead to longer intervals between the trigger and
* changes to {@link CaptureResult#CONTROL_AE_STATE android.control.aeState} indicating the start of the precapture sequence, for
* example.</p>
* <p>If both the precapture and the auto-focus trigger are activated on the same request, then
* the camera device will complete them in the optimal order for that device.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_AE_PRECAPTURE_TRIGGER_IDLE IDLE}</li>
* <li>{@link #CONTROL_AE_PRECAPTURE_TRIGGER_START START}</li>
* <li>{@link #CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL CANCEL}</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 CaptureRequest#CONTROL_AE_LOCK
* @see CaptureResult#CONTROL_AE_STATE
* @see CaptureRequest#CONTROL_AF_TRIGGER
* @see CaptureRequest#CONTROL_CAPTURE_INTENT
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see #CONTROL_AE_PRECAPTURE_TRIGGER_IDLE
* @see #CONTROL_AE_PRECAPTURE_TRIGGER_START
* @see #CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL
*/
@PublicKey
public static final Key<Integer> CONTROL_AE_PRECAPTURE_TRIGGER =
new Key<Integer>("android.control.aePrecaptureTrigger", int.class);
/**
* <p>Current state of the auto-exposure (AE) algorithm.</p>
* <p>Switching between or enabling AE modes ({@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}) always
* resets the AE state to INACTIVE. Similarly, switching between {@link CaptureRequest#CONTROL_MODE android.control.mode},
* or {@link CaptureRequest#CONTROL_SCENE_MODE android.control.sceneMode} if <code>{@link CaptureRequest#CONTROL_MODE android.control.mode} == USE_SCENE_MODE</code> resets all
* the algorithm states to INACTIVE.</p>
* <p>The camera device can do several state transitions between two results, if it is
* allowed by the state transition table. For example: INACTIVE may never actually be
* seen in a result.</p>
* <p>The state in the result is the state for this image (in sync with this image): if
* AE state becomes CONVERGED, then the image data associated with this result should
* be good to use.</p>
* <p>Below are state transition tables for different AE modes.</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center"></td>
* <td align="center">INACTIVE</td>
* <td align="center">Camera device auto exposure algorithm is disabled</td>
* </tr>
* </tbody>
* </table>
* <p>When {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is AE_MODE_ON_*:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">Camera device initiates AE scan</td>
* <td align="center">SEARCHING</td>
* <td align="center">Values changing</td>
* </tr>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} is ON</td>
* <td align="center">LOCKED</td>
* <td align="center">Values locked</td>
* </tr>
* <tr>
* <td align="center">SEARCHING</td>
* <td align="center">Camera device finishes AE scan</td>
* <td align="center">CONVERGED</td>
* <td align="center">Good values, not changing</td>
* </tr>
* <tr>
* <td align="center">SEARCHING</td>
* <td align="center">Camera device finishes AE scan</td>
* <td align="center">FLASH_REQUIRED</td>
* <td align="center">Converged but too dark w/o flash</td>
* </tr>
* <tr>
* <td align="center">SEARCHING</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} is ON</td>
* <td align="center">LOCKED</td>
* <td align="center">Values locked</td>
* </tr>
* <tr>
* <td align="center">CONVERGED</td>
* <td align="center">Camera device initiates AE scan</td>
* <td align="center">SEARCHING</td>
* <td align="center">Values changing</td>
* </tr>
* <tr>
* <td align="center">CONVERGED</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} is ON</td>
* <td align="center">LOCKED</td>
* <td align="center">Values locked</td>
* </tr>
* <tr>
* <td align="center">FLASH_REQUIRED</td>
* <td align="center">Camera device initiates AE scan</td>
* <td align="center">SEARCHING</td>
* <td align="center">Values changing</td>
* </tr>
* <tr>
* <td align="center">FLASH_REQUIRED</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} is ON</td>
* <td align="center">LOCKED</td>
* <td align="center">Values locked</td>
* </tr>
* <tr>
* <td align="center">LOCKED</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} is OFF</td>
* <td align="center">SEARCHING</td>
* <td align="center">Values not good after unlock</td>
* </tr>
* <tr>
* <td align="center">LOCKED</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} is OFF</td>
* <td align="center">CONVERGED</td>
* <td align="center">Values good after unlock</td>
* </tr>
* <tr>
* <td align="center">LOCKED</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} is OFF</td>
* <td align="center">FLASH_REQUIRED</td>
* <td align="center">Exposure good, but too dark</td>
* </tr>
* <tr>
* <td align="center">PRECAPTURE</td>
* <td align="center">Sequence done. {@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} is OFF</td>
* <td align="center">CONVERGED</td>
* <td align="center">Ready for high-quality capture</td>
* </tr>
* <tr>
* <td align="center">PRECAPTURE</td>
* <td align="center">Sequence done. {@link CaptureRequest#CONTROL_AE_LOCK android.control.aeLock} is ON</td>
* <td align="center">LOCKED</td>
* <td align="center">Ready for high-quality capture</td>
* </tr>
* <tr>
* <td align="center">LOCKED</td>
* <td align="center">aeLock is ON and aePrecaptureTrigger is START</td>
* <td align="center">LOCKED</td>
* <td align="center">Precapture trigger is ignored when AE is already locked</td>
* </tr>
* <tr>
* <td align="center">LOCKED</td>
* <td align="center">aeLock is ON and aePrecaptureTrigger is CANCEL</td>
* <td align="center">LOCKED</td>
* <td align="center">Precapture trigger is ignored when AE is already locked</td>
* </tr>
* <tr>
* <td align="center">Any state (excluding LOCKED)</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} is START</td>
* <td align="center">PRECAPTURE</td>
* <td align="center">Start AE precapture metering sequence</td>
* </tr>
* <tr>
* <td align="center">Any state (excluding LOCKED)</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} is CANCEL</td>
* <td align="center">INACTIVE</td>
* <td align="center">Currently active precapture metering sequence is canceled</td>
* </tr>
* </tbody>
* </table>
* <p>For the above table, the camera device may skip reporting any state changes that happen
* without application intervention (i.e. mode switch, trigger, locking). Any state that
* can be skipped in that manner is called a transient state.</p>
* <p>For example, for above AE modes (AE_MODE_ON_*), in addition to the state transitions
* listed in above table, it is also legal for the camera device to skip one or more
* transient states between two results. See below table for examples:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">Camera device finished AE scan</td>
* <td align="center">CONVERGED</td>
* <td align="center">Values are already good, transient states are skipped by camera device.</td>
* </tr>
* <tr>
* <td align="center">Any state (excluding LOCKED)</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} is START, sequence done</td>
* <td align="center">FLASH_REQUIRED</td>
* <td align="center">Converged but too dark w/o flash after a precapture sequence, transient states are skipped by camera device.</td>
* </tr>
* <tr>
* <td align="center">Any state (excluding LOCKED)</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} is START, sequence done</td>
* <td align="center">CONVERGED</td>
* <td align="center">Converged after a precapture sequence, transient states are skipped by camera device.</td>
* </tr>
* <tr>
* <td align="center">Any state (excluding LOCKED)</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} is CANCEL, converged</td>
* <td align="center">FLASH_REQUIRED</td>
* <td align="center">Converged but too dark w/o flash after a precapture sequence is canceled, transient states are skipped by camera device.</td>
* </tr>
* <tr>
* <td align="center">Any state (excluding LOCKED)</td>
* <td align="center">{@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger} is CANCEL, converged</td>
* <td align="center">CONVERGED</td>
* <td align="center">Converged after a precapture sequenceis canceled, transient states are skipped by camera device.</td>
* </tr>
* <tr>
* <td align="center">CONVERGED</td>
* <td align="center">Camera device finished AE scan</td>
* <td align="center">FLASH_REQUIRED</td>
* <td align="center">Converged but too dark w/o flash after a new scan, transient states are skipped by camera device.</td>
* </tr>
* <tr>
* <td align="center">FLASH_REQUIRED</td>
* <td align="center">Camera device finished AE scan</td>
* <td align="center">CONVERGED</td>
* <td align="center">Converged after a new scan, transient states are skipped by camera device.</td>
* </tr>
* </tbody>
* </table>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_AE_STATE_INACTIVE INACTIVE}</li>
* <li>{@link #CONTROL_AE_STATE_SEARCHING SEARCHING}</li>
* <li>{@link #CONTROL_AE_STATE_CONVERGED CONVERGED}</li>
* <li>{@link #CONTROL_AE_STATE_LOCKED LOCKED}</li>
* <li>{@link #CONTROL_AE_STATE_FLASH_REQUIRED FLASH_REQUIRED}</li>
* <li>{@link #CONTROL_AE_STATE_PRECAPTURE PRECAPTURE}</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 CaptureRequest#CONTROL_AE_LOCK
* @see CaptureRequest#CONTROL_AE_MODE
* @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
* @see CaptureRequest#CONTROL_MODE
* @see CaptureRequest#CONTROL_SCENE_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see #CONTROL_AE_STATE_INACTIVE
* @see #CONTROL_AE_STATE_SEARCHING
* @see #CONTROL_AE_STATE_CONVERGED
* @see #CONTROL_AE_STATE_LOCKED
* @see #CONTROL_AE_STATE_FLASH_REQUIRED
* @see #CONTROL_AE_STATE_PRECAPTURE
*/
@PublicKey
public static final Key<Integer> CONTROL_AE_STATE =
new Key<Integer>("android.control.aeState", int.class);
/**
* <p>Whether auto-focus (AF) is currently enabled, and what
* mode it is set to.</p>
* <p>Only effective if {@link CaptureRequest#CONTROL_MODE android.control.mode} = AUTO and the lens is not fixed focus
* (i.e. <code>{@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance} &gt; 0</code>). Also note that
* when {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is OFF, the behavior of AF is device
* dependent. It is recommended to lock AF by using {@link CaptureRequest#CONTROL_AF_TRIGGER android.control.afTrigger} before
* setting {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} to OFF, or set AF mode to OFF when AE is OFF.</p>
* <p>If the lens is controlled by the camera device auto-focus algorithm,
* the camera device will report the current AF status in {@link CaptureResult#CONTROL_AF_STATE android.control.afState}
* in result metadata.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_AF_MODE_OFF OFF}</li>
* <li>{@link #CONTROL_AF_MODE_AUTO AUTO}</li>
* <li>{@link #CONTROL_AF_MODE_MACRO MACRO}</li>
* <li>{@link #CONTROL_AF_MODE_CONTINUOUS_VIDEO CONTINUOUS_VIDEO}</li>
* <li>{@link #CONTROL_AF_MODE_CONTINUOUS_PICTURE CONTINUOUS_PICTURE}</li>
* <li>{@link #CONTROL_AF_MODE_EDOF EDOF}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#CONTROL_AF_AVAILABLE_MODES android.control.afAvailableModes}</p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#CONTROL_AE_MODE
* @see CameraCharacteristics#CONTROL_AF_AVAILABLE_MODES
* @see CaptureResult#CONTROL_AF_STATE
* @see CaptureRequest#CONTROL_AF_TRIGGER
* @see CaptureRequest#CONTROL_MODE
* @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
* @see #CONTROL_AF_MODE_OFF
* @see #CONTROL_AF_MODE_AUTO
* @see #CONTROL_AF_MODE_MACRO
* @see #CONTROL_AF_MODE_CONTINUOUS_VIDEO
* @see #CONTROL_AF_MODE_CONTINUOUS_PICTURE
* @see #CONTROL_AF_MODE_EDOF
*/
@PublicKey
public static final Key<Integer> CONTROL_AF_MODE =
new Key<Integer>("android.control.afMode", int.class);
/**
* <p>List of metering areas to use for auto-focus.</p>
* <p>Not available if {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AF android.control.maxRegionsAf} is 0.
* Otherwise will always be present.</p>
* <p>The maximum number of focus areas supported by the device is determined by the value
* of {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AF android.control.maxRegionsAf}.</p>
* <p>The coordinate system is based on the active pixel array,
* with (0,0) being the top-left pixel in the active pixel array, and
* ({@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.width - 1,
* {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.height - 1) being the
* bottom-right pixel in the active pixel array.</p>
* <p>The weight must be within <code>[0, 1000]</code>, and represents a weight
* for every pixel in the area. This means that a large metering area
* with the same weight as a smaller area will have more effect in
* the metering result. Metering areas can partially overlap and the
* camera device will add the weights in the overlap region.</p>
* <p>The weights are relative to weights of other metering regions, so if only one region
* is used, all non-zero weights will have the same effect. A region with 0 weight is
* ignored.</p>
* <p>If all regions have 0 weight, then no specific metering area needs to be used by the
* camera device.</p>
* <p>If the metering region is outside the used {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion} returned in
* capture result metadata, the camera device will ignore the sections outside the crop
* region and output only the intersection rectangle as the metering region in the result
* metadata. If the region is entirely outside the crop region, it will be ignored and
* not reported in the result metadata.</p>
* <p><b>Units</b>: Pixel coordinates within {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
* <p><b>Range of valid values:</b><br>
* Coordinates must be between <code>[(0,0), (width, height))</code> of
* {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CameraCharacteristics#CONTROL_MAX_REGIONS_AF
* @see CaptureRequest#SCALER_CROP_REGION
* @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
@PublicKey
public static final Key<android.hardware.camera2.params.MeteringRectangle[]> CONTROL_AF_REGIONS =
new Key<android.hardware.camera2.params.MeteringRectangle[]>("android.control.afRegions", android.hardware.camera2.params.MeteringRectangle[].class);
/**
* <p>Whether the camera device will trigger autofocus for this request.</p>
* <p>This entry is normally set to IDLE, or is not
* included at all in the request settings.</p>
* <p>When included and set to START, the camera device will trigger the
* autofocus algorithm. If autofocus is disabled, this trigger has no effect.</p>
* <p>When set to CANCEL, the camera device will cancel any active trigger,
* and return to its initial AF state.</p>
* <p>Generally, applications should set this entry to START or CANCEL for only a
* single capture, and then return it to IDLE (or not set at all). Specifying
* START for multiple captures in a row means restarting the AF operation over
* and over again.</p>
* <p>See {@link CaptureResult#CONTROL_AF_STATE android.control.afState} for what the trigger means for each AF mode.</p>
* <p>Using the autofocus trigger and the precapture trigger {@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}
* simultaneously is allowed. However, since these triggers often require cooperation between
* the auto-focus and auto-exposure routines (for example, the may need to be enabled for a
* focus sweep), the camera device may delay acting on a later trigger until the previous
* trigger has been fully handled. This may lead to longer intervals between the trigger and
* changes to {@link CaptureResult#CONTROL_AF_STATE android.control.afState}, for example.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_AF_TRIGGER_IDLE IDLE}</li>
* <li>{@link #CONTROL_AF_TRIGGER_START START}</li>
* <li>{@link #CONTROL_AF_TRIGGER_CANCEL CANCEL}</li>
* </ul></p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
* @see CaptureResult#CONTROL_AF_STATE
* @see #CONTROL_AF_TRIGGER_IDLE
* @see #CONTROL_AF_TRIGGER_START
* @see #CONTROL_AF_TRIGGER_CANCEL
*/
@PublicKey
public static final Key<Integer> CONTROL_AF_TRIGGER =
new Key<Integer>("android.control.afTrigger", int.class);
/**
* <p>Current state of auto-focus (AF) algorithm.</p>
* <p>Switching between or enabling AF modes ({@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}) always
* resets the AF state to INACTIVE. Similarly, switching between {@link CaptureRequest#CONTROL_MODE android.control.mode},
* or {@link CaptureRequest#CONTROL_SCENE_MODE android.control.sceneMode} if <code>{@link CaptureRequest#CONTROL_MODE android.control.mode} == USE_SCENE_MODE</code> resets all
* the algorithm states to INACTIVE.</p>
* <p>The camera device can do several state transitions between two results, if it is
* allowed by the state transition table. For example: INACTIVE may never actually be
* seen in a result.</p>
* <p>The state in the result is the state for this image (in sync with this image): if
* AF state becomes FOCUSED, then the image data associated with this result should
* be sharp.</p>
* <p>Below are state transition tables for different AF modes.</p>
* <p>When {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode} is AF_MODE_OFF or AF_MODE_EDOF:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center"></td>
* <td align="center">INACTIVE</td>
* <td align="center">Never changes</td>
* </tr>
* </tbody>
* </table>
* <p>When {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode} is AF_MODE_AUTO or AF_MODE_MACRO:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">ACTIVE_SCAN</td>
* <td align="center">Start AF sweep, Lens now moving</td>
* </tr>
* <tr>
* <td align="center">ACTIVE_SCAN</td>
* <td align="center">AF sweep done</td>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">Focused, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">ACTIVE_SCAN</td>
* <td align="center">AF sweep done</td>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">Not focused, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">ACTIVE_SCAN</td>
* <td align="center">AF_CANCEL</td>
* <td align="center">INACTIVE</td>
* <td align="center">Cancel/reset AF, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">AF_CANCEL</td>
* <td align="center">INACTIVE</td>
* <td align="center">Cancel/reset AF</td>
* </tr>
* <tr>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">ACTIVE_SCAN</td>
* <td align="center">Start new sweep, Lens now moving</td>
* </tr>
* <tr>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">AF_CANCEL</td>
* <td align="center">INACTIVE</td>
* <td align="center">Cancel/reset AF</td>
* </tr>
* <tr>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">ACTIVE_SCAN</td>
* <td align="center">Start new sweep, Lens now moving</td>
* </tr>
* <tr>
* <td align="center">Any state</td>
* <td align="center">Mode change</td>
* <td align="center">INACTIVE</td>
* <td align="center"></td>
* </tr>
* </tbody>
* </table>
* <p>For the above table, the camera device may skip reporting any state changes that happen
* without application intervention (i.e. mode switch, trigger, locking). Any state that
* can be skipped in that manner is called a transient state.</p>
* <p>For example, for these AF modes (AF_MODE_AUTO and AF_MODE_MACRO), in addition to the
* state transitions listed in above table, it is also legal for the camera device to skip
* one or more transient states between two results. See below table for examples:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">Focus is already good or good after a scan, lens is now locked.</td>
* </tr>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">Focus failed after a scan, lens is now locked.</td>
* </tr>
* <tr>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">Focus is already good or good after a scan, lens is now locked.</td>
* </tr>
* <tr>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">Focus is good after a scan, lens is not locked.</td>
* </tr>
* </tbody>
* </table>
* <p>When {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode} is AF_MODE_CONTINUOUS_VIDEO:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">Camera device initiates new scan</td>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">Start AF scan, Lens now moving</td>
* </tr>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">AF state query, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">Camera device completes current scan</td>
* <td align="center">PASSIVE_FOCUSED</td>
* <td align="center">End AF scan, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">Camera device fails current scan</td>
* <td align="center">PASSIVE_UNFOCUSED</td>
* <td align="center">End AF scan, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">Immediate transition, if focus is good. Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">Immediate transition, if focus is bad. Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">AF_CANCEL</td>
* <td align="center">INACTIVE</td>
* <td align="center">Reset lens position, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_FOCUSED</td>
* <td align="center">Camera device initiates new scan</td>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">Start AF scan, Lens now moving</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_UNFOCUSED</td>
* <td align="center">Camera device initiates new scan</td>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">Start AF scan, Lens now moving</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_FOCUSED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">Immediate transition, lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_UNFOCUSED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">Immediate transition, lens now locked</td>
* </tr>
* <tr>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">No effect</td>
* </tr>
* <tr>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">AF_CANCEL</td>
* <td align="center">INACTIVE</td>
* <td align="center">Restart AF scan</td>
* </tr>
* <tr>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">No effect</td>
* </tr>
* <tr>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">AF_CANCEL</td>
* <td align="center">INACTIVE</td>
* <td align="center">Restart AF scan</td>
* </tr>
* </tbody>
* </table>
* <p>When {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode} is AF_MODE_CONTINUOUS_PICTURE:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">Camera device initiates new scan</td>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">Start AF scan, Lens now moving</td>
* </tr>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">AF state query, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">Camera device completes current scan</td>
* <td align="center">PASSIVE_FOCUSED</td>
* <td align="center">End AF scan, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">Camera device fails current scan</td>
* <td align="center">PASSIVE_UNFOCUSED</td>
* <td align="center">End AF scan, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">Eventual transition once the focus is good. Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">Eventual transition if cannot find focus. Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">AF_CANCEL</td>
* <td align="center">INACTIVE</td>
* <td align="center">Reset lens position, Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_FOCUSED</td>
* <td align="center">Camera device initiates new scan</td>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">Start AF scan, Lens now moving</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_UNFOCUSED</td>
* <td align="center">Camera device initiates new scan</td>
* <td align="center">PASSIVE_SCAN</td>
* <td align="center">Start AF scan, Lens now moving</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_FOCUSED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">Immediate trans. Lens now locked</td>
* </tr>
* <tr>
* <td align="center">PASSIVE_UNFOCUSED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">Immediate trans. Lens now locked</td>
* </tr>
* <tr>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">No effect</td>
* </tr>
* <tr>
* <td align="center">FOCUSED_LOCKED</td>
* <td align="center">AF_CANCEL</td>
* <td align="center">INACTIVE</td>
* <td align="center">Restart AF scan</td>
* </tr>
* <tr>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">AF_TRIGGER</td>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">No effect</td>
* </tr>
* <tr>
* <td align="center">NOT_FOCUSED_LOCKED</td>
* <td align="center">AF_CANCEL</td>
* <td align="center">INACTIVE</td>
* <td align="center">Restart AF scan</td>
* </tr>
* </tbody>
* </table>
* <p>When switch between AF_MODE_CONTINUOUS_* (CAF modes) and AF_MODE_AUTO/AF_MODE_MACRO
* (AUTO modes), the initial INACTIVE or PASSIVE_SCAN states may be skipped by the
* camera device. When a trigger is included in a mode switch request, the trigger
* will be evaluated in the context of the new mode in the request.
* See below table for examples:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">any state</td>
* <td align="center">CAF--&gt;AUTO mode switch</td>
* <td align="center">INACTIVE</td>
* <td align="center">Mode switch without trigger, initial state must be INACTIVE</td>
* </tr>
* <tr>
* <td align="center">any state</td>
* <td align="center">CAF--&gt;AUTO mode switch with AF_TRIGGER</td>
* <td align="center">trigger-reachable states from INACTIVE</td>
* <td align="center">Mode switch with trigger, INACTIVE is skipped</td>
* </tr>
* <tr>
* <td align="center">any state</td>
* <td align="center">AUTO--&gt;CAF mode switch</td>
* <td align="center">passively reachable states from INACTIVE</td>
* <td align="center">Mode switch without trigger, passive transient state is skipped</td>
* </tr>
* </tbody>
* </table>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_AF_STATE_INACTIVE INACTIVE}</li>
* <li>{@link #CONTROL_AF_STATE_PASSIVE_SCAN PASSIVE_SCAN}</li>
* <li>{@link #CONTROL_AF_STATE_PASSIVE_FOCUSED PASSIVE_FOCUSED}</li>
* <li>{@link #CONTROL_AF_STATE_ACTIVE_SCAN ACTIVE_SCAN}</li>
* <li>{@link #CONTROL_AF_STATE_FOCUSED_LOCKED FOCUSED_LOCKED}</li>
* <li>{@link #CONTROL_AF_STATE_NOT_FOCUSED_LOCKED NOT_FOCUSED_LOCKED}</li>
* <li>{@link #CONTROL_AF_STATE_PASSIVE_UNFOCUSED PASSIVE_UNFOCUSED}</li>
* </ul></p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#CONTROL_AF_MODE
* @see CaptureRequest#CONTROL_MODE
* @see CaptureRequest#CONTROL_SCENE_MODE
* @see #CONTROL_AF_STATE_INACTIVE
* @see #CONTROL_AF_STATE_PASSIVE_SCAN
* @see #CONTROL_AF_STATE_PASSIVE_FOCUSED
* @see #CONTROL_AF_STATE_ACTIVE_SCAN
* @see #CONTROL_AF_STATE_FOCUSED_LOCKED
* @see #CONTROL_AF_STATE_NOT_FOCUSED_LOCKED
* @see #CONTROL_AF_STATE_PASSIVE_UNFOCUSED
*/
@PublicKey
public static final Key<Integer> CONTROL_AF_STATE =
new Key<Integer>("android.control.afState", int.class);
/**
* <p>Whether auto-white balance (AWB) is currently locked to its
* latest calculated values.</p>
* <p>When set to <code>true</code> (ON), the AWB algorithm is locked to its latest parameters,
* and will not change color balance settings until the lock is set to <code>false</code> (OFF).</p>
* <p>Since the camera device has a pipeline of in-flight requests, the settings that
* get locked do not necessarily correspond to the settings that were present in the
* latest capture result received from the camera device, since additional captures
* and AWB updates may have occurred even before the result was sent out. If an
* application is switching between automatic and manual control and wishes to eliminate
* any flicker during the switch, the following procedure is recommended:</p>
* <ol>
* <li>Starting in auto-AWB mode:</li>
* <li>Lock AWB</li>
* <li>Wait for the first result to be output that has the AWB locked</li>
* <li>Copy AWB settings from that result into a request, set the request to manual AWB</li>
* <li>Submit the capture request, proceed to run manual AWB as desired.</li>
* </ol>
* <p>Note that AWB lock is only meaningful when
* {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} is in the AUTO mode; in other modes,
* AWB is already fixed to a specific setting.</p>
* <p>Some LEGACY devices may not support ON; the value is then overridden to OFF.</p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#CONTROL_AWB_MODE
*/
@PublicKey
public static final Key<Boolean> CONTROL_AWB_LOCK =
new Key<Boolean>("android.control.awbLock", boolean.class);
/**
* <p>Whether auto-white balance (AWB) is currently setting the color
* transform fields, and what its illumination target
* is.</p>
* <p>This control is only effective if {@link CaptureRequest#CONTROL_MODE android.control.mode} is AUTO.</p>
* <p>When set to the ON mode, the camera device's auto-white balance
* routine is enabled, overriding the application's selected
* {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}, {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} and
* {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode}. Note that when {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}
* is OFF, the behavior of AWB is device dependent. It is recommened to
* also set AWB mode to OFF or lock AWB by using {@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock} before
* setting AE mode to OFF.</p>
* <p>When set to the OFF mode, the camera device's auto-white balance
* routine is disabled. The application manually controls the white
* balance by {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform}, {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains}
* and {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode}.</p>
* <p>When set to any other modes, the camera device's auto-white
* balance routine is disabled. The camera device uses each
* particular illumination target for white balance
* adjustment. The application's values for
* {@link CaptureRequest#COLOR_CORRECTION_TRANSFORM android.colorCorrection.transform},
* {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} and
* {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} are ignored.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_AWB_MODE_OFF OFF}</li>
* <li>{@link #CONTROL_AWB_MODE_AUTO AUTO}</li>
* <li>{@link #CONTROL_AWB_MODE_INCANDESCENT INCANDESCENT}</li>
* <li>{@link #CONTROL_AWB_MODE_FLUORESCENT FLUORESCENT}</li>
* <li>{@link #CONTROL_AWB_MODE_WARM_FLUORESCENT WARM_FLUORESCENT}</li>
* <li>{@link #CONTROL_AWB_MODE_DAYLIGHT DAYLIGHT}</li>
* <li>{@link #CONTROL_AWB_MODE_CLOUDY_DAYLIGHT CLOUDY_DAYLIGHT}</li>
* <li>{@link #CONTROL_AWB_MODE_TWILIGHT TWILIGHT}</li>
* <li>{@link #CONTROL_AWB_MODE_SHADE SHADE}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#CONTROL_AWB_AVAILABLE_MODES android.control.awbAvailableModes}</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_AE_MODE
* @see CameraCharacteristics#CONTROL_AWB_AVAILABLE_MODES
* @see CaptureRequest#CONTROL_AWB_LOCK
* @see CaptureRequest#CONTROL_MODE
* @see #CONTROL_AWB_MODE_OFF
* @see #CONTROL_AWB_MODE_AUTO
* @see #CONTROL_AWB_MODE_INCANDESCENT
* @see #CONTROL_AWB_MODE_FLUORESCENT
* @see #CONTROL_AWB_MODE_WARM_FLUORESCENT
* @see #CONTROL_AWB_MODE_DAYLIGHT
* @see #CONTROL_AWB_MODE_CLOUDY_DAYLIGHT
* @see #CONTROL_AWB_MODE_TWILIGHT
* @see #CONTROL_AWB_MODE_SHADE
*/
@PublicKey
public static final Key<Integer> CONTROL_AWB_MODE =
new Key<Integer>("android.control.awbMode", int.class);
/**
* <p>List of metering areas to use for auto-white-balance illuminant
* estimation.</p>
* <p>Not available if {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AWB android.control.maxRegionsAwb} is 0.
* Otherwise will always be present.</p>
* <p>The maximum number of regions supported by the device is determined by the value
* of {@link CameraCharacteristics#CONTROL_MAX_REGIONS_AWB android.control.maxRegionsAwb}.</p>
* <p>The coordinate system is based on the active pixel array,
* with (0,0) being the top-left pixel in the active pixel array, and
* ({@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.width - 1,
* {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.height - 1) being the
* bottom-right pixel in the active pixel array.</p>
* <p>The weight must range from 0 to 1000, and represents a weight
* for every pixel in the area. This means that a large metering area
* with the same weight as a smaller area will have more effect in
* the metering result. Metering areas can partially overlap and the
* camera device will add the weights in the overlap region.</p>
* <p>The weights are relative to weights of other white balance metering regions, so if
* only one region is used, all non-zero weights will have the same effect. A region with
* 0 weight is ignored.</p>
* <p>If all regions have 0 weight, then no specific metering area needs to be used by the
* camera device.</p>
* <p>If the metering region is outside the used {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion} returned in
* capture result metadata, the camera device will ignore the sections outside the crop
* region and output only the intersection rectangle as the metering region in the result
* metadata. If the region is entirely outside the crop region, it will be ignored and
* not reported in the result metadata.</p>
* <p><b>Units</b>: Pixel coordinates within {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
* <p><b>Range of valid values:</b><br>
* Coordinates must be between <code>[(0,0), (width, height))</code> of
* {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CameraCharacteristics#CONTROL_MAX_REGIONS_AWB
* @see CaptureRequest#SCALER_CROP_REGION
* @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
@PublicKey
public static final Key<android.hardware.camera2.params.MeteringRectangle[]> CONTROL_AWB_REGIONS =
new Key<android.hardware.camera2.params.MeteringRectangle[]>("android.control.awbRegions", android.hardware.camera2.params.MeteringRectangle[].class);
/**
* <p>Information to the camera device 3A (auto-exposure,
* auto-focus, auto-white balance) routines about the purpose
* of this capture, to help the camera device to decide optimal 3A
* strategy.</p>
* <p>This control (except for MANUAL) is only effective if
* <code>{@link CaptureRequest#CONTROL_MODE android.control.mode} != OFF</code> and any 3A routine is active.</p>
* <p>ZERO_SHUTTER_LAG will be supported if {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities}
* contains PRIVATE_REPROCESSING or YUV_REPROCESSING. MANUAL will be supported if
* {@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains MANUAL_SENSOR. Other intent values are
* always supported.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_CAPTURE_INTENT_CUSTOM CUSTOM}</li>
* <li>{@link #CONTROL_CAPTURE_INTENT_PREVIEW PREVIEW}</li>
* <li>{@link #CONTROL_CAPTURE_INTENT_STILL_CAPTURE STILL_CAPTURE}</li>
* <li>{@link #CONTROL_CAPTURE_INTENT_VIDEO_RECORD VIDEO_RECORD}</li>
* <li>{@link #CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT VIDEO_SNAPSHOT}</li>
* <li>{@link #CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG ZERO_SHUTTER_LAG}</li>
* <li>{@link #CONTROL_CAPTURE_INTENT_MANUAL MANUAL}</li>
* </ul></p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#CONTROL_MODE
* @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
* @see #CONTROL_CAPTURE_INTENT_CUSTOM
* @see #CONTROL_CAPTURE_INTENT_PREVIEW
* @see #CONTROL_CAPTURE_INTENT_STILL_CAPTURE
* @see #CONTROL_CAPTURE_INTENT_VIDEO_RECORD
* @see #CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT
* @see #CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG
* @see #CONTROL_CAPTURE_INTENT_MANUAL
*/
@PublicKey
public static final Key<Integer> CONTROL_CAPTURE_INTENT =
new Key<Integer>("android.control.captureIntent", int.class);
/**
* <p>Current state of auto-white balance (AWB) algorithm.</p>
* <p>Switching between or enabling AWB modes ({@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}) always
* resets the AWB state to INACTIVE. Similarly, switching between {@link CaptureRequest#CONTROL_MODE android.control.mode},
* or {@link CaptureRequest#CONTROL_SCENE_MODE android.control.sceneMode} if <code>{@link CaptureRequest#CONTROL_MODE android.control.mode} == USE_SCENE_MODE</code> resets all
* the algorithm states to INACTIVE.</p>
* <p>The camera device can do several state transitions between two results, if it is
* allowed by the state transition table. So INACTIVE may never actually be seen in
* a result.</p>
* <p>The state in the result is the state for this image (in sync with this image): if
* AWB state becomes CONVERGED, then the image data associated with this result should
* be good to use.</p>
* <p>Below are state transition tables for different AWB modes.</p>
* <p>When <code>{@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} != AWB_MODE_AUTO</code>:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center"></td>
* <td align="center">INACTIVE</td>
* <td align="center">Camera device auto white balance algorithm is disabled</td>
* </tr>
* </tbody>
* </table>
* <p>When {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} is AWB_MODE_AUTO:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">Camera device initiates AWB scan</td>
* <td align="center">SEARCHING</td>
* <td align="center">Values changing</td>
* </tr>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock} is ON</td>
* <td align="center">LOCKED</td>
* <td align="center">Values locked</td>
* </tr>
* <tr>
* <td align="center">SEARCHING</td>
* <td align="center">Camera device finishes AWB scan</td>
* <td align="center">CONVERGED</td>
* <td align="center">Good values, not changing</td>
* </tr>
* <tr>
* <td align="center">SEARCHING</td>
* <td align="center">{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock} is ON</td>
* <td align="center">LOCKED</td>
* <td align="center">Values locked</td>
* </tr>
* <tr>
* <td align="center">CONVERGED</td>
* <td align="center">Camera device initiates AWB scan</td>
* <td align="center">SEARCHING</td>
* <td align="center">Values changing</td>
* </tr>
* <tr>
* <td align="center">CONVERGED</td>
* <td align="center">{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock} is ON</td>
* <td align="center">LOCKED</td>
* <td align="center">Values locked</td>
* </tr>
* <tr>
* <td align="center">LOCKED</td>
* <td align="center">{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock} is OFF</td>
* <td align="center">SEARCHING</td>
* <td align="center">Values not good after unlock</td>
* </tr>
* </tbody>
* </table>
* <p>For the above table, the camera device may skip reporting any state changes that happen
* without application intervention (i.e. mode switch, trigger, locking). Any state that
* can be skipped in that manner is called a transient state.</p>
* <p>For example, for this AWB mode (AWB_MODE_AUTO), in addition to the state transitions
* listed in above table, it is also legal for the camera device to skip one or more
* transient states between two results. See below table for examples:</p>
* <table>
* <thead>
* <tr>
* <th align="center">State</th>
* <th align="center">Transition Cause</th>
* <th align="center">New State</th>
* <th align="center">Notes</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <td align="center">INACTIVE</td>
* <td align="center">Camera device finished AWB scan</td>
* <td align="center">CONVERGED</td>
* <td align="center">Values are already good, transient states are skipped by camera device.</td>
* </tr>
* <tr>
* <td align="center">LOCKED</td>
* <td align="center">{@link CaptureRequest#CONTROL_AWB_LOCK android.control.awbLock} is OFF</td>
* <td align="center">CONVERGED</td>
* <td align="center">Values good after unlock, transient states are skipped by camera device.</td>
* </tr>
* </tbody>
* </table>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_AWB_STATE_INACTIVE INACTIVE}</li>
* <li>{@link #CONTROL_AWB_STATE_SEARCHING SEARCHING}</li>
* <li>{@link #CONTROL_AWB_STATE_CONVERGED CONVERGED}</li>
* <li>{@link #CONTROL_AWB_STATE_LOCKED LOCKED}</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 CaptureRequest#CONTROL_AWB_LOCK
* @see CaptureRequest#CONTROL_AWB_MODE
* @see CaptureRequest#CONTROL_MODE
* @see CaptureRequest#CONTROL_SCENE_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see #CONTROL_AWB_STATE_INACTIVE
* @see #CONTROL_AWB_STATE_SEARCHING
* @see #CONTROL_AWB_STATE_CONVERGED
* @see #CONTROL_AWB_STATE_LOCKED
*/
@PublicKey
public static final Key<Integer> CONTROL_AWB_STATE =
new Key<Integer>("android.control.awbState", int.class);
/**
* <p>A special color effect to apply.</p>
* <p>When this mode is set, a color effect will be applied
* to images produced by the camera device. The interpretation
* and implementation of these color effects is left to the
* implementor of the camera device, and should not be
* depended on to be consistent (or present) across all
* devices.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_EFFECT_MODE_OFF OFF}</li>
* <li>{@link #CONTROL_EFFECT_MODE_MONO MONO}</li>
* <li>{@link #CONTROL_EFFECT_MODE_NEGATIVE NEGATIVE}</li>
* <li>{@link #CONTROL_EFFECT_MODE_SOLARIZE SOLARIZE}</li>
* <li>{@link #CONTROL_EFFECT_MODE_SEPIA SEPIA}</li>
* <li>{@link #CONTROL_EFFECT_MODE_POSTERIZE POSTERIZE}</li>
* <li>{@link #CONTROL_EFFECT_MODE_WHITEBOARD WHITEBOARD}</li>
* <li>{@link #CONTROL_EFFECT_MODE_BLACKBOARD BLACKBOARD}</li>
* <li>{@link #CONTROL_EFFECT_MODE_AQUA AQUA}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#CONTROL_AVAILABLE_EFFECTS android.control.availableEffects}</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#CONTROL_AVAILABLE_EFFECTS
* @see #CONTROL_EFFECT_MODE_OFF
* @see #CONTROL_EFFECT_MODE_MONO
* @see #CONTROL_EFFECT_MODE_NEGATIVE
* @see #CONTROL_EFFECT_MODE_SOLARIZE
* @see #CONTROL_EFFECT_MODE_SEPIA
* @see #CONTROL_EFFECT_MODE_POSTERIZE
* @see #CONTROL_EFFECT_MODE_WHITEBOARD
* @see #CONTROL_EFFECT_MODE_BLACKBOARD
* @see #CONTROL_EFFECT_MODE_AQUA
*/
@PublicKey
public static final Key<Integer> CONTROL_EFFECT_MODE =
new Key<Integer>("android.control.effectMode", int.class);
/**
* <p>Overall mode of 3A (auto-exposure, auto-white-balance, auto-focus) control
* routines.</p>
* <p>This is a top-level 3A control switch. When set to OFF, all 3A control
* by the camera device is disabled. The application must set the fields for
* capture parameters itself.</p>
* <p>When set to AUTO, the individual algorithm controls in
* android.control.* are in effect, such as {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}.</p>
* <p>When set to USE_SCENE_MODE, the individual controls in
* android.control.* are mostly disabled, and the camera device implements
* one of the scene mode settings (such as ACTION, SUNSET, or PARTY)
* as it wishes. The camera device scene mode 3A settings are provided by
* {@link android.hardware.camera2.CaptureResult capture results}.</p>
* <p>When set to OFF_KEEP_STATE, it is similar to OFF mode, the only difference
* is that this frame will not be used by camera device background 3A statistics
* update, as if this frame is never captured. This mode can be used in the scenario
* where the application doesn't want a 3A manual control capture to affect
* the subsequent auto 3A capture results.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_MODE_OFF OFF}</li>
* <li>{@link #CONTROL_MODE_AUTO AUTO}</li>
* <li>{@link #CONTROL_MODE_USE_SCENE_MODE USE_SCENE_MODE}</li>
* <li>{@link #CONTROL_MODE_OFF_KEEP_STATE OFF_KEEP_STATE}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#CONTROL_AVAILABLE_MODES android.control.availableModes}</p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#CONTROL_AF_MODE
* @see CameraCharacteristics#CONTROL_AVAILABLE_MODES
* @see #CONTROL_MODE_OFF
* @see #CONTROL_MODE_AUTO
* @see #CONTROL_MODE_USE_SCENE_MODE
* @see #CONTROL_MODE_OFF_KEEP_STATE
*/
@PublicKey
public static final Key<Integer> CONTROL_MODE =
new Key<Integer>("android.control.mode", int.class);
/**
* <p>Control for which scene mode is currently active.</p>
* <p>Scene modes are custom camera modes optimized for a certain set of conditions and
* capture settings.</p>
* <p>This is the mode that that is active when
* <code>{@link CaptureRequest#CONTROL_MODE android.control.mode} == USE_SCENE_MODE</code>. Aside from FACE_PRIORITY, these modes will
* disable {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode}, {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode}, and {@link CaptureRequest#CONTROL_AF_MODE android.control.afMode}
* while in use.</p>
* <p>The interpretation and implementation of these scene modes is left
* to the implementor of the camera device. Their behavior will not be
* consistent across all devices, and any given device may only implement
* a subset of these modes.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_SCENE_MODE_DISABLED DISABLED}</li>
* <li>{@link #CONTROL_SCENE_MODE_FACE_PRIORITY FACE_PRIORITY}</li>
* <li>{@link #CONTROL_SCENE_MODE_ACTION ACTION}</li>
* <li>{@link #CONTROL_SCENE_MODE_PORTRAIT PORTRAIT}</li>
* <li>{@link #CONTROL_SCENE_MODE_LANDSCAPE LANDSCAPE}</li>
* <li>{@link #CONTROL_SCENE_MODE_NIGHT NIGHT}</li>
* <li>{@link #CONTROL_SCENE_MODE_NIGHT_PORTRAIT NIGHT_PORTRAIT}</li>
* <li>{@link #CONTROL_SCENE_MODE_THEATRE THEATRE}</li>
* <li>{@link #CONTROL_SCENE_MODE_BEACH BEACH}</li>
* <li>{@link #CONTROL_SCENE_MODE_SNOW SNOW}</li>
* <li>{@link #CONTROL_SCENE_MODE_SUNSET SUNSET}</li>
* <li>{@link #CONTROL_SCENE_MODE_STEADYPHOTO STEADYPHOTO}</li>
* <li>{@link #CONTROL_SCENE_MODE_FIREWORKS FIREWORKS}</li>
* <li>{@link #CONTROL_SCENE_MODE_SPORTS SPORTS}</li>
* <li>{@link #CONTROL_SCENE_MODE_PARTY PARTY}</li>
* <li>{@link #CONTROL_SCENE_MODE_CANDLELIGHT CANDLELIGHT}</li>
* <li>{@link #CONTROL_SCENE_MODE_BARCODE BARCODE}</li>
* <li>{@link #CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO HIGH_SPEED_VIDEO}</li>
* <li>{@link #CONTROL_SCENE_MODE_HDR HDR}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES android.control.availableSceneModes}</p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#CONTROL_AE_MODE
* @see CaptureRequest#CONTROL_AF_MODE
* @see CameraCharacteristics#CONTROL_AVAILABLE_SCENE_MODES
* @see CaptureRequest#CONTROL_AWB_MODE
* @see CaptureRequest#CONTROL_MODE
* @see #CONTROL_SCENE_MODE_DISABLED
* @see #CONTROL_SCENE_MODE_FACE_PRIORITY
* @see #CONTROL_SCENE_MODE_ACTION
* @see #CONTROL_SCENE_MODE_PORTRAIT
* @see #CONTROL_SCENE_MODE_LANDSCAPE
* @see #CONTROL_SCENE_MODE_NIGHT
* @see #CONTROL_SCENE_MODE_NIGHT_PORTRAIT
* @see #CONTROL_SCENE_MODE_THEATRE
* @see #CONTROL_SCENE_MODE_BEACH
* @see #CONTROL_SCENE_MODE_SNOW
* @see #CONTROL_SCENE_MODE_SUNSET
* @see #CONTROL_SCENE_MODE_STEADYPHOTO
* @see #CONTROL_SCENE_MODE_FIREWORKS
* @see #CONTROL_SCENE_MODE_SPORTS
* @see #CONTROL_SCENE_MODE_PARTY
* @see #CONTROL_SCENE_MODE_CANDLELIGHT
* @see #CONTROL_SCENE_MODE_BARCODE
* @see #CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO
* @see #CONTROL_SCENE_MODE_HDR
*/
@PublicKey
public static final Key<Integer> CONTROL_SCENE_MODE =
new Key<Integer>("android.control.sceneMode", int.class);
/**
* <p>Whether video stabilization is
* active.</p>
* <p>Video stabilization automatically warps images from
* the camera in order to stabilize motion between consecutive frames.</p>
* <p>If enabled, video stabilization can modify the
* {@link CaptureRequest#SCALER_CROP_REGION android.scaler.cropRegion} to keep the video stream stabilized.</p>
* <p>Switching between different video stabilization modes may take several
* frames to initialize, the camera device will report the current mode
* in capture result metadata. For example, When "ON" mode is requested,
* the video stabilization modes in the first several capture results may
* still be "OFF", and it will become "ON" when the initialization is
* done.</p>
* <p>In addition, not all recording sizes or frame rates may be supported for
* stabilization by a device that reports stabilization support. It is guaranteed
* that an output targeting a MediaRecorder or MediaCodec will be stabilized if
* the recording resolution is less than or equal to 1920 x 1080 (width less than
* or equal to 1920, height less than or equal to 1080), and the recording
* frame rate is less than or equal to 30fps. At other sizes, the CaptureResult
* {@link CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE android.control.videoStabilizationMode} field will return
* OFF if the recording output is not stabilized, or if there are no output
* Surface types that can be stabilized.</p>
* <p>If a camera device supports both this mode and OIS
* ({@link CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE android.lens.opticalStabilizationMode}), turning both modes on may
* produce undesirable interaction, so it is recommended not to enable
* both at the same time.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #CONTROL_VIDEO_STABILIZATION_MODE_OFF OFF}</li>
* <li>{@link #CONTROL_VIDEO_STABILIZATION_MODE_ON ON}</li>
* </ul></p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
* @see CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE
* @see CaptureRequest#SCALER_CROP_REGION
* @see #CONTROL_VIDEO_STABILIZATION_MODE_OFF
* @see #CONTROL_VIDEO_STABILIZATION_MODE_ON
*/
@PublicKey
public static final Key<Integer> CONTROL_VIDEO_STABILIZATION_MODE =
new Key<Integer>("android.control.videoStabilizationMode", int.class);
/**
* <p>Operation mode for edge
* enhancement.</p>
* <p>Edge enhancement improves sharpness and details in the captured image. OFF means
* no enhancement will be applied by the camera device.</p>
* <p>FAST/HIGH_QUALITY both mean camera device determined enhancement
* will be applied. HIGH_QUALITY mode indicates that the
* camera device will use the highest-quality enhancement algorithms,
* even if it slows down capture rate. FAST means the camera device will
* not slow down capture rate when applying edge enhancement. FAST may be the same as OFF if
* edge enhancement will slow down capture rate. Every output stream will have a similar
* amount of enhancement applied.</p>
* <p>ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular
* buffer of high-resolution images during preview and reprocess image(s) from that buffer
* into a final capture when triggered by the user. In this mode, the camera device applies
* edge enhancement to low-resolution streams (below maximum recording resolution) to
* maximize preview quality, but does not apply edge enhancement to high-resolution streams,
* since those will be reprocessed later if necessary.</p>
* <p>For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera
* device will apply FAST/HIGH_QUALITY YUV-domain edge enhancement, respectively.
* The camera device may adjust its internal edge enhancement parameters for best
* image quality based on the {@link CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR android.reprocess.effectiveExposureFactor}, if it is set.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #EDGE_MODE_OFF OFF}</li>
* <li>{@link #EDGE_MODE_FAST FAST}</li>
* <li>{@link #EDGE_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
* <li>{@link #EDGE_MODE_ZERO_SHUTTER_LAG ZERO_SHUTTER_LAG}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#EDGE_AVAILABLE_EDGE_MODES android.edge.availableEdgeModes}</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#EDGE_AVAILABLE_EDGE_MODES
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR
* @see #EDGE_MODE_OFF
* @see #EDGE_MODE_FAST
* @see #EDGE_MODE_HIGH_QUALITY
* @see #EDGE_MODE_ZERO_SHUTTER_LAG
*/
@PublicKey
public static final Key<Integer> EDGE_MODE =
new Key<Integer>("android.edge.mode", int.class);
/**
* <p>The desired mode for for the camera device's flash control.</p>
* <p>This control is only effective when flash unit is available
* (<code>{@link CameraCharacteristics#FLASH_INFO_AVAILABLE android.flash.info.available} == true</code>).</p>
* <p>When this control is used, the {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} must be set to ON or OFF.
* Otherwise, the camera device auto-exposure related flash control (ON_AUTO_FLASH,
* ON_ALWAYS_FLASH, or ON_AUTO_FLASH_REDEYE) will override this control.</p>
* <p>When set to OFF, the camera device will not fire flash for this capture.</p>
* <p>When set to SINGLE, the camera device will fire flash regardless of the camera
* device's auto-exposure routine's result. When used in still capture case, this
* control should be used along with auto-exposure (AE) precapture metering sequence
* ({@link CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER android.control.aePrecaptureTrigger}), otherwise, the image may be incorrectly exposed.</p>
* <p>When set to TORCH, the flash will be on continuously. This mode can be used
* for use cases such as preview, auto-focus assist, still capture, or video recording.</p>
* <p>The flash status will be reported by {@link CaptureResult#FLASH_STATE android.flash.state} in the capture result metadata.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #FLASH_MODE_OFF OFF}</li>
* <li>{@link #FLASH_MODE_SINGLE SINGLE}</li>
* <li>{@link #FLASH_MODE_TORCH TORCH}</li>
* </ul></p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#CONTROL_AE_MODE
* @see CaptureRequest#CONTROL_AE_PRECAPTURE_TRIGGER
* @see CameraCharacteristics#FLASH_INFO_AVAILABLE
* @see CaptureResult#FLASH_STATE
* @see #FLASH_MODE_OFF
* @see #FLASH_MODE_SINGLE
* @see #FLASH_MODE_TORCH
*/
@PublicKey
public static final Key<Integer> FLASH_MODE =
new Key<Integer>("android.flash.mode", int.class);
/**
* <p>Current state of the flash
* unit.</p>
* <p>When the camera device doesn't have flash unit
* (i.e. <code>{@link CameraCharacteristics#FLASH_INFO_AVAILABLE android.flash.info.available} == false</code>), this state will always be UNAVAILABLE.
* Other states indicate the current flash status.</p>
* <p>In certain conditions, this will be available on LEGACY devices:</p>
* <ul>
* <li>Flash-less cameras always return UNAVAILABLE.</li>
* <li>Using {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} <code>==</code> ON_ALWAYS_FLASH
* will always return FIRED.</li>
* <li>Using {@link CaptureRequest#FLASH_MODE android.flash.mode} <code>==</code> TORCH
* will always return FIRED.</li>
* </ul>
* <p>In all other conditions the state will not be available on
* LEGACY devices (i.e. it will be <code>null</code>).</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #FLASH_STATE_UNAVAILABLE UNAVAILABLE}</li>
* <li>{@link #FLASH_STATE_CHARGING CHARGING}</li>
* <li>{@link #FLASH_STATE_READY READY}</li>
* <li>{@link #FLASH_STATE_FIRED FIRED}</li>
* <li>{@link #FLASH_STATE_PARTIAL PARTIAL}</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 CaptureRequest#CONTROL_AE_MODE
* @see CameraCharacteristics#FLASH_INFO_AVAILABLE
* @see CaptureRequest#FLASH_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see #FLASH_STATE_UNAVAILABLE
* @see #FLASH_STATE_CHARGING
* @see #FLASH_STATE_READY
* @see #FLASH_STATE_FIRED
* @see #FLASH_STATE_PARTIAL
*/
@PublicKey
public static final Key<Integer> FLASH_STATE =
new Key<Integer>("android.flash.state", int.class);
/**
* <p>Operational mode for hot pixel correction.</p>
* <p>Hotpixel correction interpolates out, or otherwise removes, pixels
* that do not accurately measure the incoming light (i.e. pixels that
* are stuck at an arbitrary value or are oversensitive).</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #HOT_PIXEL_MODE_OFF OFF}</li>
* <li>{@link #HOT_PIXEL_MODE_FAST FAST}</li>
* <li>{@link #HOT_PIXEL_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES android.hotPixel.availableHotPixelModes}</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CameraCharacteristics#HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES
* @see #HOT_PIXEL_MODE_OFF
* @see #HOT_PIXEL_MODE_FAST
* @see #HOT_PIXEL_MODE_HIGH_QUALITY
*/
@PublicKey
public static final Key<Integer> HOT_PIXEL_MODE =
new Key<Integer>("android.hotPixel.mode", int.class);
/**
* <p>A location object to use when generating image GPS metadata.</p>
* <p>Setting a location object in a request will include the GPS coordinates of the location
* into any JPEG images captured based on the request. These coordinates can then be
* viewed by anyone who receives the JPEG image.</p>
* <p>This key is available on all devices.</p>
*/
@PublicKey
@SyntheticKey
public static final Key<android.location.Location> JPEG_GPS_LOCATION =
new Key<android.location.Location>("android.jpeg.gpsLocation", android.location.Location.class);
/**
* <p>GPS coordinates to include in output JPEG
* EXIF.</p>
* <p><b>Range of valid values:</b><br>
* (-180 - 180], [-90,90], [-inf, inf]</p>
* <p>This key is available on all devices.</p>
* @hide
*/
public static final Key<double[]> JPEG_GPS_COORDINATES =
new Key<double[]>("android.jpeg.gpsCoordinates", double[].class);
/**
* <p>32 characters describing GPS algorithm to
* include in EXIF.</p>
* <p><b>Units</b>: UTF-8 null-terminated string</p>
* <p>This key is available on all devices.</p>
* @hide
*/
public static final Key<String> JPEG_GPS_PROCESSING_METHOD =
new Key<String>("android.jpeg.gpsProcessingMethod", String.class);
/**
* <p>Time GPS fix was made to include in
* EXIF.</p>
* <p><b>Units</b>: UTC in seconds since January 1, 1970</p>
* <p>This key is available on all devices.</p>
* @hide
*/
public static final Key<Long> JPEG_GPS_TIMESTAMP =
new Key<Long>("android.jpeg.gpsTimestamp", long.class);
/**
* <p>The orientation for a JPEG image.</p>
* <p>The clockwise rotation angle in degrees, relative to the orientation
* to the camera, that the JPEG picture needs to be rotated by, to be viewed
* upright.</p>
* <p>Camera devices may either encode this value into the JPEG EXIF header, or
* rotate the image data to match this orientation. When the image data is rotated,
* the thumbnail data will also be rotated.</p>
* <p>Note that this orientation is relative to the orientation of the camera sensor, given
* by {@link CameraCharacteristics#SENSOR_ORIENTATION android.sensor.orientation}.</p>
* <p>To translate from the device orientation given by the Android sensor APIs, the following
* sample code may be used:</p>
* <pre><code>private int getJpegOrientation(CameraCharacteristics c, int deviceOrientation) {
* if (deviceOrientation == android.view.OrientationEventListener.ORIENTATION_UNKNOWN) return 0;
* int sensorOrientation = c.get(CameraCharacteristics.SENSOR_ORIENTATION);
*
* // Round device orientation to a multiple of 90
* deviceOrientation = (deviceOrientation + 45) / 90 * 90;
*
* // Reverse device orientation for front-facing cameras
* boolean facingFront = c.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_FRONT;
* if (facingFront) deviceOrientation = -deviceOrientation;
*
* // Calculate desired JPEG orientation relative to camera orientation to make
* // the image upright relative to the device orientation
* int jpegOrientation = (sensorOrientation + deviceOrientation + 360) % 360;
*
* return jpegOrientation;
* }
* </code></pre>
* <p><b>Units</b>: Degrees in multiples 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>
*
* @see CameraCharacteristics#SENSOR_ORIENTATION
*/
@PublicKey
public static final Key<Integer> JPEG_ORIENTATION =
new Key<Integer>("android.jpeg.orientation", int.class);
/**
* <p>Compression quality of the final JPEG
* image.</p>
* <p>85-95 is typical usage range.</p>
* <p><b>Range of valid values:</b><br>
* 1-100; larger is higher quality</p>
* <p>This key is available on all devices.</p>
*/
@PublicKey
public static final Key<Byte> JPEG_QUALITY =
new Key<Byte>("android.jpeg.quality", byte.class);
/**
* <p>Compression quality of JPEG
* thumbnail.</p>
* <p><b>Range of valid values:</b><br>
* 1-100; larger is higher quality</p>
* <p>This key is available on all devices.</p>
*/
@PublicKey
public static final Key<Byte> JPEG_THUMBNAIL_QUALITY =
new Key<Byte>("android.jpeg.thumbnailQuality", byte.class);
/**
* <p>Resolution of embedded JPEG thumbnail.</p>
* <p>When set to (0, 0) value, the JPEG EXIF will not contain thumbnail,
* but the captured JPEG will still be a valid image.</p>
* <p>For best results, when issuing a request for a JPEG image, the thumbnail size selected
* should have the same aspect ratio as the main JPEG output.</p>
* <p>If the thumbnail image aspect ratio differs from the JPEG primary image aspect
* ratio, the camera device creates the thumbnail by cropping it from the primary image.
* For example, if the primary image has 4:3 aspect ratio, the thumbnail image has
* 16:9 aspect ratio, the primary image will be cropped vertically (letterbox) to
* generate the thumbnail image. The thumbnail image will always have a smaller Field
* Of View (FOV) than the primary image when aspect ratios differ.</p>
* <p>When an {@link CaptureRequest#JPEG_ORIENTATION android.jpeg.orientation} of non-zero degree is requested,
* the camera device will handle thumbnail rotation in one of the following ways:</p>
* <ul>
* <li>Set the {@link android.media.ExifInterface#TAG_ORIENTATION EXIF orientation flag}
* and keep jpeg and thumbnail image data unrotated.</li>
* <li>Rotate the jpeg and thumbnail image data and not set
* {@link android.media.ExifInterface#TAG_ORIENTATION EXIF orientation flag}. In this
* case, LIMITED or FULL hardware level devices will report rotated thumnail size in
* capture result, so the width and height will be interchanged if 90 or 270 degree
* orientation is requested. LEGACY device will always report unrotated thumbnail
* size.</li>
* </ul>
* <p><b>Range of valid values:</b><br>
* {@link CameraCharacteristics#JPEG_AVAILABLE_THUMBNAIL_SIZES android.jpeg.availableThumbnailSizes}</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#JPEG_AVAILABLE_THUMBNAIL_SIZES
* @see CaptureRequest#JPEG_ORIENTATION
*/
@PublicKey
public static final Key<android.util.Size> JPEG_THUMBNAIL_SIZE =
new Key<android.util.Size>("android.jpeg.thumbnailSize", android.util.Size.class);
/**
* <p>The desired lens aperture size, as a ratio of lens focal length to the
* effective aperture diameter.</p>
* <p>Setting this value is only supported on the camera devices that have a variable
* aperture lens.</p>
* <p>When this is supported and {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is OFF,
* this can be set along with {@link CaptureRequest#SENSOR_EXPOSURE_TIME android.sensor.exposureTime},
* {@link CaptureRequest#SENSOR_SENSITIVITY android.sensor.sensitivity}, and {@link CaptureRequest#SENSOR_FRAME_DURATION android.sensor.frameDuration}
* to achieve manual exposure control.</p>
* <p>The requested aperture value may take several frames to reach the
* requested value; the camera device will report the current (intermediate)
* aperture size in capture result metadata while the aperture is changing.
* While the aperture is still changing, {@link CaptureResult#LENS_STATE android.lens.state} will be set to MOVING.</p>
* <p>When this is supported and {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} is one of
* the ON modes, this will be overridden by the camera device
* auto-exposure algorithm, the overridden values are then provided
* back to the user in the corresponding result.</p>
* <p><b>Units</b>: The f-number (f/N)</p>
* <p><b>Range of valid values:</b><br>
* {@link CameraCharacteristics#LENS_INFO_AVAILABLE_APERTURES android.lens.info.availableApertures}</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#CONTROL_AE_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see CameraCharacteristics#LENS_INFO_AVAILABLE_APERTURES
* @see CaptureResult#LENS_STATE
* @see CaptureRequest#SENSOR_EXPOSURE_TIME
* @see CaptureRequest#SENSOR_FRAME_DURATION
* @see CaptureRequest#SENSOR_SENSITIVITY
*/
@PublicKey
public static final Key<Float> LENS_APERTURE =
new Key<Float>("android.lens.aperture", float.class);
/**
* <p>The desired setting for the lens neutral density filter(s).</p>
* <p>This control will not be supported on most camera devices.</p>
* <p>Lens filters are typically used to lower the amount of light the
* sensor is exposed to (measured in steps of EV). As used here, an EV
* step is the standard logarithmic representation, which are
* non-negative, and inversely proportional to the amount of light
* hitting the sensor. For example, setting this to 0 would result
* in no reduction of the incoming light, and setting this to 2 would
* mean that the filter is set to reduce incoming light by two stops
* (allowing 1/4 of the prior amount of light to the sensor).</p>
* <p>It may take several frames before the lens filter density changes
* to the requested value. While the filter density is still changing,
* {@link CaptureResult#LENS_STATE android.lens.state} will be set to MOVING.</p>
* <p><b>Units</b>: Exposure Value (EV)</p>
* <p><b>Range of valid values:</b><br>
* {@link CameraCharacteristics#LENS_INFO_AVAILABLE_FILTER_DENSITIES android.lens.info.availableFilterDensities}</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 CameraCharacteristics#LENS_INFO_AVAILABLE_FILTER_DENSITIES
* @see CaptureResult#LENS_STATE
*/
@PublicKey
public static final Key<Float> LENS_FILTER_DENSITY =
new Key<Float>("android.lens.filterDensity", float.class);
/**
* <p>The desired lens focal length; used for optical zoom.</p>
* <p>This setting controls the physical focal length of the camera
* device's lens. Changing the focal length changes the field of
* view of the camera device, and is usually used for optical zoom.</p>
* <p>Like {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} and {@link CaptureRequest#LENS_APERTURE android.lens.aperture}, this
* setting won't be applied instantaneously, and it may take several
* frames before the lens can change to the requested focal length.
* While the focal length is still changing, {@link CaptureResult#LENS_STATE android.lens.state} will
* be set to MOVING.</p>
* <p>Optical zoom will not be supported on most devices.</p>
* <p><b>Units</b>: Millimeters</p>
* <p><b>Range of valid values:</b><br>
* {@link CameraCharacteristics#LENS_INFO_AVAILABLE_FOCAL_LENGTHS android.lens.info.availableFocalLengths}</p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#LENS_APERTURE
* @see CaptureRequest#LENS_FOCUS_DISTANCE
* @see CameraCharacteristics#LENS_INFO_AVAILABLE_FOCAL_LENGTHS
* @see CaptureResult#LENS_STATE
*/
@PublicKey
public static final Key<Float> LENS_FOCAL_LENGTH =
new Key<Float>("android.lens.focalLength", float.class);
/**
* <p>Desired distance to plane of sharpest focus,
* measured from frontmost surface of the lens.</p>
* <p>Should be zero for fixed-focus cameras</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>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 CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
*/
@PublicKey
public static final Key<Float> LENS_FOCUS_DISTANCE =
new Key<Float>("android.lens.focusDistance", float.class);
/**
* <p>The range of scene distances that are in
* sharp focus (depth of field).</p>
* <p>If variable focus not supported, can still report
* fixed depth of field range</p>
* <p><b>Units</b>: A pair of focus distances in diopters: (near,
* far); 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<android.util.Pair<Float,Float>> LENS_FOCUS_RANGE =
new Key<android.util.Pair<Float,Float>>("android.lens.focusRange", new TypeReference<android.util.Pair<Float,Float>>() {{ }});
/**
* <p>Sets whether the camera device uses optical image stabilization (OIS)
* when capturing images.</p>
* <p>OIS is used to compensate for motion blur due to small
* movements of the camera during capture. Unlike digital image
* stabilization ({@link CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE android.control.videoStabilizationMode}), OIS
* makes use of mechanical elements to stabilize the camera
* sensor, and thus allows for longer exposure times before
* camera shake becomes apparent.</p>
* <p>Switching between different optical stabilization modes may take several
* frames to initialize, the camera device will report the current mode in
* capture result metadata. For example, When "ON" mode is requested, the
* optical stabilization modes in the first several capture results may still
* be "OFF", and it will become "ON" when the initialization is done.</p>
* <p>If a camera device supports both OIS and digital image stabilization
* ({@link CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE android.control.videoStabilizationMode}), turning both modes on may produce undesirable
* interaction, so it is recommended not to enable both at the same time.</p>
* <p>Not all devices will support OIS; see
* {@link CameraCharacteristics#LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION android.lens.info.availableOpticalStabilization} for
* available controls.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #LENS_OPTICAL_STABILIZATION_MODE_OFF OFF}</li>
* <li>{@link #LENS_OPTICAL_STABILIZATION_MODE_ON ON}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION android.lens.info.availableOpticalStabilization}</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 CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see CameraCharacteristics#LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
* @see #LENS_OPTICAL_STABILIZATION_MODE_OFF
* @see #LENS_OPTICAL_STABILIZATION_MODE_ON
*/
@PublicKey
public static final Key<Integer> LENS_OPTICAL_STABILIZATION_MODE =
new Key<Integer>("android.lens.opticalStabilizationMode", int.class);
/**
* <p>Current lens status.</p>
* <p>For lens parameters {@link CaptureRequest#LENS_FOCAL_LENGTH android.lens.focalLength}, {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance},
* {@link CaptureRequest#LENS_FILTER_DENSITY android.lens.filterDensity} and {@link CaptureRequest#LENS_APERTURE android.lens.aperture}, when changes are requested,
* they may take several frames to reach the requested values. This state indicates
* the current status of the lens parameters.</p>
* <p>When the state is STATIONARY, the lens parameters are not changing. This could be
* either because the parameters are all fixed, or because the lens has had enough
* time to reach the most recently-requested values.
* If all these lens parameters are not changable for a camera device, as listed below:</p>
* <ul>
* <li>Fixed focus (<code>{@link CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE android.lens.info.minimumFocusDistance} == 0</code>), which means
* {@link CaptureRequest#LENS_FOCUS_DISTANCE android.lens.focusDistance} parameter will always be 0.</li>
* <li>Fixed focal length ({@link CameraCharacteristics#LENS_INFO_AVAILABLE_FOCAL_LENGTHS android.lens.info.availableFocalLengths} contains single value),
* which means the optical zoom is not supported.</li>
* <li>No ND filter ({@link CameraCharacteristics#LENS_INFO_AVAILABLE_FILTER_DENSITIES android.lens.info.availableFilterDensities} contains only 0).</li>
* <li>Fixed aperture ({@link CameraCharacteristics#LENS_INFO_AVAILABLE_APERTURES android.lens.info.availableApertures} contains single value).</li>
* </ul>
* <p>Then this state will always be STATIONARY.</p>
* <p>When the state is MOVING, it indicates that at least one of the lens parameters
* is changing.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #LENS_STATE_STATIONARY STATIONARY}</li>
* <li>{@link #LENS_STATE_MOVING MOVING}</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_APERTURE
* @see CaptureRequest#LENS_FILTER_DENSITY
* @see CaptureRequest#LENS_FOCAL_LENGTH
* @see CaptureRequest#LENS_FOCUS_DISTANCE
* @see CameraCharacteristics#LENS_INFO_AVAILABLE_APERTURES
* @see CameraCharacteristics#LENS_INFO_AVAILABLE_FILTER_DENSITIES
* @see CameraCharacteristics#LENS_INFO_AVAILABLE_FOCAL_LENGTHS
* @see CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
* @see #LENS_STATE_STATIONARY
* @see #LENS_STATE_MOVING
*/
@PublicKey
public static final Key<Integer> LENS_STATE =
new Key<Integer>("android.lens.state", int.class);
/**
* <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);
/**
* <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>, 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>.</p>
* <p>To transform a pixel coordinates between two cameras
* facing the same direction, first the source camera
* {@link CameraCharacteristics#LENS_RADIAL_DISTORTION android.lens.radialDistortion} 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><b>Units</b>: Meters</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
* @see CameraCharacteristics#LENS_POSE_ROTATION
* @see CameraCharacteristics#LENS_RADIAL_DISTORTION
*/
@PublicKey
public static final Key<float[]> LENS_POSE_TRANSLATION =
new Key<float[]>("android.lens.poseTranslation", float[].class);
/**
* <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}, respective) to calculate the
* complete transform from world coordinates to pixel
* coordinates:</p>
* <pre><code>P = [ K 0 * [ R t
* 0 1 ] 0 1 ]
* </code></pre>
* <p>and 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_RADIAL_DISTORTION android.lens.radialDistortion}
* 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><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_POSE_ROTATION
* @see CameraCharacteristics#LENS_POSE_TRANSLATION
* @see CameraCharacteristics#LENS_RADIAL_DISTORTION
* @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);
/**
* <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
*/
@PublicKey
public static final Key<float[]> LENS_RADIAL_DISTORTION =
new Key<float[]>("android.lens.radialDistortion", float[].class);
/**
* <p>Mode of operation for the noise reduction algorithm.</p>
* <p>The noise reduction algorithm attempts to improve image quality by removing
* excessive noise added by the capture process, especially in dark conditions.</p>
* <p>OFF means no noise reduction will be applied by the camera device, for both raw and
* YUV domain.</p>
* <p>MINIMAL means that only sensor raw domain basic noise reduction is enabled ,to remove
* demosaicing or other processing artifacts. For YUV_REPROCESSING, MINIMAL is same as OFF.
* This mode is optional, may not be support by all devices. The application should check
* {@link CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES android.noiseReduction.availableNoiseReductionModes} before using it.</p>
* <p>FAST/HIGH_QUALITY both mean camera device determined noise filtering
* will be applied. HIGH_QUALITY mode indicates that the camera device
* will use the highest-quality noise filtering algorithms,
* even if it slows down capture rate. FAST means the camera device will not
* slow down capture rate when applying noise filtering. FAST may be the same as MINIMAL if
* MINIMAL is listed, or the same as OFF if any noise filtering will slow down capture rate.
* Every output stream will have a similar amount of enhancement applied.</p>
* <p>ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular
* buffer of high-resolution images during preview and reprocess image(s) from that buffer
* into a final capture when triggered by the user. In this mode, the camera device applies
* noise reduction to low-resolution streams (below maximum recording resolution) to maximize
* preview quality, but does not apply noise reduction to high-resolution streams, since
* those will be reprocessed later if necessary.</p>
* <p>For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera device
* will apply FAST/HIGH_QUALITY YUV domain noise reduction, respectively. The camera device
* may adjust the noise reduction parameters for best image quality based on the
* {@link CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR android.reprocess.effectiveExposureFactor} if it is set.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #NOISE_REDUCTION_MODE_OFF OFF}</li>
* <li>{@link #NOISE_REDUCTION_MODE_FAST FAST}</li>
* <li>{@link #NOISE_REDUCTION_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
* <li>{@link #NOISE_REDUCTION_MODE_MINIMAL MINIMAL}</li>
* <li>{@link #NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG ZERO_SHUTTER_LAG}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES android.noiseReduction.availableNoiseReductionModes}</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 CameraCharacteristics#NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
* @see CaptureRequest#REPROCESS_EFFECTIVE_EXPOSURE_FACTOR
* @see #NOISE_REDUCTION_MODE_OFF
* @see #NOISE_REDUCTION_MODE_FAST
* @see #NOISE_REDUCTION_MODE_HIGH_QUALITY
* @see #NOISE_REDUCTION_MODE_MINIMAL
* @see #NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG
*/
@PublicKey
public static final Key<Integer> NOISE_REDUCTION_MODE =
new Key<Integer>("android.noiseReduction.mode", int.class);
/**
* <p>Whether a result given to the framework is the
* final one for the capture, or only a partial that contains a
* subset of the full set of dynamic metadata
* values.</p>
* <p>The entries in the result metadata buffers for a
* single capture may not overlap, except for this entry. The
* FINAL buffers must retain FIFO ordering relative to the
* requests that generate them, so the FINAL buffer for frame 3 must
* always be sent to the framework after the FINAL buffer for frame 2, and
* before the FINAL buffer for frame 4. PARTIAL buffers may be returned
* in any order relative to other frames, but all PARTIAL buffers for a given
* capture must arrive before the FINAL buffer for that capture. This entry may
* only be used by the camera device if quirks.usePartialResult is set to 1.</p>
* <p><b>Range of valid values:</b><br>
* Optional. Default value is FINAL.</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
* @deprecated
* @hide
*/
@Deprecated
public static final Key<Boolean> QUIRKS_PARTIAL_RESULT =
new Key<Boolean>("android.quirks.partialResult", boolean.class);
/**
* <p>A frame counter set by the framework. This value monotonically
* increases with every new result (that is, each new result has a unique
* frameCount value).</p>
* <p>Reset on release()</p>
* <p><b>Units</b>: count of frames</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>
* @deprecated
* @hide
*/
@Deprecated
public static final Key<Integer> REQUEST_FRAME_COUNT =
new Key<Integer>("android.request.frameCount", int.class);
/**
* <p>An application-specified ID for the current
* request. Must be maintained unchanged in output
* frame</p>
* <p><b>Units</b>: arbitrary integer assigned by application</p>
* <p><b>Range of valid values:</b><br>
* Any int</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
* @hide
*/
public static final Key<Integer> REQUEST_ID =
new Key<Integer>("android.request.id", int.class);
/**
* <p>Specifies the number of pipeline stages the frame went
* through from when it was exposed to when the final completed result
* was available to the framework.</p>
* <p>Depending on what settings are used in the request, and
* what streams are configured, the data may undergo less processing,
* and some pipeline stages skipped.</p>
* <p>See {@link CameraCharacteristics#REQUEST_PIPELINE_MAX_DEPTH android.request.pipelineMaxDepth} for more details.</p>
* <p><b>Range of valid values:</b><br>
* &lt;= {@link CameraCharacteristics#REQUEST_PIPELINE_MAX_DEPTH android.request.pipelineMaxDepth}</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#REQUEST_PIPELINE_MAX_DEPTH
*/
@PublicKey
public static final Key<Byte> REQUEST_PIPELINE_DEPTH =
new Key<Byte>("android.request.pipelineDepth", byte.class);
/**
* <p>The desired region of the sensor to read out for this capture.</p>
* <p>This control can be used to implement digital zoom.</p>
* <p>The crop region coordinate system is based off
* {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}, with <code>(0, 0)</code> being the
* top-left corner of the sensor active array.</p>
* <p>Output streams use this rectangle to produce their output,
* cropping to a smaller region if necessary to maintain the
* stream's aspect ratio, then scaling the sensor input to
* match the output's configured resolution.</p>
* <p>The crop region is applied after the RAW to other color
* space (e.g. YUV) conversion. Since raw streams
* (e.g. RAW16) don't have the conversion stage, they are not
* croppable. The crop region will be ignored by raw streams.</p>
* <p>For non-raw streams, any additional per-stream cropping will
* be done to maximize the final pixel area of the stream.</p>
* <p>For example, if the crop region is set to a 4:3 aspect
* ratio, then 4:3 streams will use the exact crop
* region. 16:9 streams will further crop vertically
* (letterbox).</p>
* <p>Conversely, if the crop region is set to a 16:9, then 4:3
* outputs will crop horizontally (pillarbox), and 16:9
* streams will match exactly. These additional crops will
* be centered within the crop region.</p>
* <p>The width and height of the crop region cannot
* be set to be smaller than
* <code>floor( activeArraySize.width / {@link CameraCharacteristics#SCALER_AVAILABLE_MAX_DIGITAL_ZOOM android.scaler.availableMaxDigitalZoom} )</code> and
* <code>floor( activeArraySize.height / {@link CameraCharacteristics#SCALER_AVAILABLE_MAX_DIGITAL_ZOOM android.scaler.availableMaxDigitalZoom} )</code>, respectively.</p>
* <p>The camera device may adjust the crop region to account
* for rounding and other hardware requirements; the final
* crop region used will be included in the output capture
* result.</p>
* <p><b>Units</b>: Pixel coordinates relative to
* {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#SCALER_AVAILABLE_MAX_DIGITAL_ZOOM
* @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
@PublicKey
public static final Key<android.graphics.Rect> SCALER_CROP_REGION =
new Key<android.graphics.Rect>("android.scaler.cropRegion", android.graphics.Rect.class);
/**
* <p>Duration each pixel is exposed to
* light.</p>
* <p>If the sensor can't expose this exact duration, it will shorten the
* duration exposed to the nearest possible value (rather than expose longer).
* The final exposure time used will be available in the output capture result.</p>
* <p>This control is only effective if {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} or {@link CaptureRequest#CONTROL_MODE android.control.mode} is set to
* OFF; otherwise the auto-exposure algorithm will override this value.</p>
* <p><b>Units</b>: Nanoseconds</p>
* <p><b>Range of valid values:</b><br>
* {@link CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE android.sensor.info.exposureTimeRange}</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#CONTROL_AE_MODE
* @see CaptureRequest#CONTROL_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see CameraCharacteristics#SENSOR_INFO_EXPOSURE_TIME_RANGE
*/
@PublicKey
public static final Key<Long> SENSOR_EXPOSURE_TIME =
new Key<Long>("android.sensor.exposureTime", long.class);
/**
* <p>Duration from start of frame exposure to
* start of next frame exposure.</p>
* <p>The maximum frame rate that can be supported by a camera subsystem is
* a function of many factors:</p>
* <ul>
* <li>Requested resolutions of output image streams</li>
* <li>Availability of binning / skipping modes on the imager</li>
* <li>The bandwidth of the imager interface</li>
* <li>The bandwidth of the various ISP processing blocks</li>
* </ul>
* <p>Since these factors can vary greatly between different ISPs and
* sensors, the camera abstraction tries to represent the bandwidth
* restrictions with as simple a model as possible.</p>
* <p>The model presented has the following characteristics:</p>
* <ul>
* <li>The image sensor is always configured to output the smallest
* resolution possible given the application's requested output stream
* sizes. The smallest resolution is defined as being at least as large
* as the largest requested output stream size; the camera pipeline must
* never digitally upsample sensor data when the crop region covers the
* whole sensor. In general, this means that if only small output stream
* resolutions are configured, the sensor can provide a higher frame
* rate.</li>
* <li>Since any request may use any or all the currently configured
* output streams, the sensor and ISP must be configured to support
* scaling a single capture to all the streams at the same time. This
* means the camera pipeline must be ready to produce the largest
* requested output size without any delay. Therefore, the overall
* frame rate of a given configured stream set is governed only by the
* largest requested stream resolution.</li>
* <li>Using more than one output stream in a request does not affect the
* frame duration.</li>
* <li>Certain format-streams may need to do additional background processing
* before data is consumed/produced by that stream. These processors
* can run concurrently to the rest of the camera pipeline, but
* cannot process more than 1 capture at a time.</li>
* </ul>
* <p>The necessary information for the application, given the model above,
* is provided via the {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap} field using
* {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration }.
* These are used to determine the maximum frame rate / minimum frame
* duration that is possible for a given stream configuration.</p>
* <p>Specifically, the application can use the following rules to
* determine the minimum frame duration it can request from the camera
* device:</p>
* <ol>
* <li>Let the set of currently configured input/output streams
* be called <code>S</code>.</li>
* <li>Find the minimum frame durations for each stream in <code>S</code>, by looking
* it up in {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap} using {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration }
* (with its respective size/format). Let this set of frame durations be
* called <code>F</code>.</li>
* <li>For any given request <code>R</code>, the minimum frame duration allowed
* for <code>R</code> is the maximum out of all values in <code>F</code>. Let the streams
* used in <code>R</code> be called <code>S_r</code>.</li>
* </ol>
* <p>If none of the streams in <code>S_r</code> have a stall time (listed in {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration }
* using its respective size/format), then the frame duration in <code>F</code>
* determines the steady state frame rate that the application will get
* if it uses <code>R</code> as a repeating request. Let this special kind of
* request be called <code>Rsimple</code>.</p>
* <p>A repeating request <code>Rsimple</code> can be <em>occasionally</em> interleaved
* by a single capture of a new request <code>Rstall</code> (which has at least
* one in-use stream with a non-0 stall time) and if <code>Rstall</code> has the
* same minimum frame duration this will not cause a frame rate loss
* if all buffers from the previous <code>Rstall</code> have already been
* delivered.</p>
* <p>For more details about stalling, see
* {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration }.</p>
* <p>This control is only effective if {@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} or {@link CaptureRequest#CONTROL_MODE android.control.mode} is set to
* OFF; otherwise the auto-exposure algorithm will override this value.</p>
* <p><b>Units</b>: Nanoseconds</p>
* <p><b>Range of valid values:</b><br>
* See {@link CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION android.sensor.info.maxFrameDuration},
* {@link CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP android.scaler.streamConfigurationMap}. The duration
* is capped to <code>max(duration, exposureTime + overhead)</code>.</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#CONTROL_AE_MODE
* @see CaptureRequest#CONTROL_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
* @see CameraCharacteristics#SENSOR_INFO_MAX_FRAME_DURATION
*/
@PublicKey
public static final Key<Long> SENSOR_FRAME_DURATION =
new Key<Long>("android.sensor.frameDuration", long.class);
/**
* <p>The amount of gain applied to sensor data
* before processing.</p>
* <p>The sensitivity is the standard ISO sensitivity value,
* as defined in ISO 12232:2006.</p>
* <p>The sensitivity must be within {@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange}, and
* if if it less than {@link CameraCharacteristics#SENSOR_MAX_ANALOG_SENSITIVITY android.sensor.maxAnalogSensitivity}, the camera device
* is guaranteed to use only analog amplification for applying the gain.</p>
* <p>If the camera device cannot apply the exact sensitivity
* requested, it will reduce the gain to the nearest supported
* value. The final sensitivity used will be available in the
* output capture result.</p>
* <p><b>Units</b>: ISO arithmetic units</p>
* <p><b>Range of valid values:</b><br>
* {@link CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE android.sensor.info.sensitivityRange}</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 CameraCharacteristics#SENSOR_INFO_SENSITIVITY_RANGE
* @see CameraCharacteristics#SENSOR_MAX_ANALOG_SENSITIVITY
*/
@PublicKey
public static final Key<Integer> SENSOR_SENSITIVITY =
new Key<Integer>("android.sensor.sensitivity", int.class);
/**
* <p>Time at start of exposure of first
* row of the image sensor active array, in nanoseconds.</p>
* <p>The timestamps are also included in all image
* buffers produced for the same capture, and will be identical
* on all the outputs.</p>
* <p>When {@link CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE android.sensor.info.timestampSource} <code>==</code> UNKNOWN,
* the timestamps measure time since an unspecified starting point,
* and are monotonically increasing. They can be compared with the
* timestamps for other captures from the same camera device, but are
* not guaranteed to be comparable to any other time source.</p>
* <p>When {@link CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE android.sensor.info.timestampSource} <code>==</code> REALTIME, the
* timestamps measure time in the same timebase as {@link android.os.SystemClock#elapsedRealtimeNanos }, and they can
* be compared to other timestamps from other subsystems that
* are using that base.</p>
* <p>For reprocessing, the timestamp will match the start of exposure of
* the input image, i.e. {@link CaptureResult#SENSOR_TIMESTAMP the
* timestamp} in the TotalCaptureResult that was used to create the
* reprocess capture request.</p>
* <p><b>Units</b>: Nanoseconds</p>
* <p><b>Range of valid values:</b><br>
* &gt; 0</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
*/
@PublicKey
public static final Key<Long> SENSOR_TIMESTAMP =
new Key<Long>("android.sensor.timestamp", long.class);
/**
* <p>The estimated camera neutral color in the native sensor colorspace at
* the time of capture.</p>
* <p>This value gives the neutral color point encoded as an RGB value in the
* native sensor color space. The neutral color point indicates the
* currently estimated white point of the scene illumination. It can be
* used to interpolate between the provided color transforms when
* processing raw sensor data.</p>
* <p>The order of the values is R, G, B; where R is in the lowest index.</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*/
@PublicKey
public static final Key<Rational[]> SENSOR_NEUTRAL_COLOR_POINT =
new Key<Rational[]>("android.sensor.neutralColorPoint", Rational[].class);
/**
* <p>Noise model coefficients for each CFA mosaic channel.</p>
* <p>This key contains two noise model coefficients for each CFA channel
* corresponding to the sensor amplification (S) and sensor readout
* noise (O). These are given as pairs of coefficients for each channel
* in the same order as channels listed for the CFA layout key
* (see {@link CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT android.sensor.info.colorFilterArrangement}). This is
* represented as an array of Pair&lt;Double, Double&gt;, where
* the first member of the Pair at index n is the S coefficient and the
* second member is the O coefficient for the nth color channel in the CFA.</p>
* <p>These coefficients are used in a two parameter noise model to describe
* the amount of noise present in the image for each CFA channel. The
* noise model used here is:</p>
* <p>N(x) = sqrt(Sx + O)</p>
* <p>Where x represents the recorded signal of a CFA channel normalized to
* the range [0, 1], and S and O are the noise model coeffiecients for
* that channel.</p>
* <p>A more detailed description of the noise model can be found in the
* Adobe DNG specification for the NoiseProfile tag.</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
*/
@PublicKey
public static final Key<android.util.Pair<Double,Double>[]> SENSOR_NOISE_PROFILE =
new Key<android.util.Pair<Double,Double>[]>("android.sensor.noiseProfile", new TypeReference<android.util.Pair<Double,Double>[]>() {{ }});
/**
* <p>The worst-case divergence between Bayer green channels.</p>
* <p>This value is an estimate of the worst case split between the
* Bayer green channels in the red and blue rows in the sensor color
* filter array.</p>
* <p>The green split is calculated as follows:</p>
* <ol>
* <li>A 5x5 pixel (or larger) window W within the active sensor array is
* chosen. The term 'pixel' here is taken to mean a group of 4 Bayer
* mosaic channels (R, Gr, Gb, B). The location and size of the window
* chosen is implementation defined, and should be chosen to provide a
* green split estimate that is both representative of the entire image
* for this camera sensor, and can be calculated quickly.</li>
* <li>The arithmetic mean of the green channels from the red
* rows (mean_Gr) within W is computed.</li>
* <li>The arithmetic mean of the green channels from the blue
* rows (mean_Gb) within W is computed.</li>
* <li>The maximum ratio R of the two means is computed as follows:
* <code>R = max((mean_Gr + 1)/(mean_Gb + 1), (mean_Gb + 1)/(mean_Gr + 1))</code></li>
* </ol>
* <p>The ratio R is the green split divergence reported for this property,
* which represents how much the green channels differ in the mosaic
* pattern. This value is typically used to determine the treatment of
* the green mosaic channels when demosaicing.</p>
* <p>The green split value can be roughly interpreted as follows:</p>
* <ul>
* <li>R &lt; 1.03 is a negligible split (&lt;3% divergence).</li>
* <li>1.20 &lt;= R &gt;= 1.03 will require some software
* correction to avoid demosaic errors (3-20% divergence).</li>
* <li>R &gt; 1.20 will require strong software correction to produce
* a usuable image (&gt;20% divergence).</li>
* </ul>
* <p><b>Range of valid values:</b><br></p>
* <p>&gt;= 0</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*/
@PublicKey
public static final Key<Float> SENSOR_GREEN_SPLIT =
new Key<Float>("android.sensor.greenSplit", float.class);
/**
* <p>A pixel <code>[R, G_even, G_odd, B]</code> that supplies the test pattern
* when {@link CaptureRequest#SENSOR_TEST_PATTERN_MODE android.sensor.testPatternMode} is SOLID_COLOR.</p>
* <p>Each color channel is treated as an unsigned 32-bit integer.
* The camera device then uses the most significant X bits
* that correspond to how many bits are in its Bayer raw sensor
* output.</p>
* <p>For example, a sensor with RAW10 Bayer output would use the
* 10 most significant bits from each color channel.</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_TEST_PATTERN_DATA =
new Key<int[]>("android.sensor.testPatternData", int[].class);
/**
* <p>When enabled, the sensor sends a test pattern instead of
* doing a real exposure from the camera.</p>
* <p>When a test pattern is enabled, all manual sensor controls specified
* by android.sensor.* will be ignored. All other controls should
* work as normal.</p>
* <p>For example, if manual flash is enabled, flash firing should still
* occur (and that the test pattern remain unmodified, since the flash
* would not actually affect it).</p>
* <p>Defaults to OFF.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #SENSOR_TEST_PATTERN_MODE_OFF OFF}</li>
* <li>{@link #SENSOR_TEST_PATTERN_MODE_SOLID_COLOR SOLID_COLOR}</li>
* <li>{@link #SENSOR_TEST_PATTERN_MODE_COLOR_BARS COLOR_BARS}</li>
* <li>{@link #SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY COLOR_BARS_FADE_TO_GRAY}</li>
* <li>{@link #SENSOR_TEST_PATTERN_MODE_PN9 PN9}</li>
* <li>{@link #SENSOR_TEST_PATTERN_MODE_CUSTOM1 CUSTOM1}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#SENSOR_AVAILABLE_TEST_PATTERN_MODES android.sensor.availableTestPatternModes}</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CameraCharacteristics#SENSOR_AVAILABLE_TEST_PATTERN_MODES
* @see #SENSOR_TEST_PATTERN_MODE_OFF
* @see #SENSOR_TEST_PATTERN_MODE_SOLID_COLOR
* @see #SENSOR_TEST_PATTERN_MODE_COLOR_BARS
* @see #SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY
* @see #SENSOR_TEST_PATTERN_MODE_PN9
* @see #SENSOR_TEST_PATTERN_MODE_CUSTOM1
*/
@PublicKey
public static final Key<Integer> SENSOR_TEST_PATTERN_MODE =
new Key<Integer>("android.sensor.testPatternMode", int.class);
/**
* <p>Duration between the start of first row exposure
* and the start of last row exposure.</p>
* <p>This is the exposure time skew between the first and last
* row exposure start times. The first row and the last row are
* the first and last rows inside of the
* {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.</p>
* <p>For typical camera sensors that use rolling shutters, this is also equivalent
* to the frame readout time.</p>
* <p><b>Units</b>: Nanoseconds</p>
* <p><b>Range of valid values:</b><br>
* &gt;= 0 and &lt;
* {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration }.</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#SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
@PublicKey
public static final Key<Long> SENSOR_ROLLING_SHUTTER_SKEW =
new Key<Long>("android.sensor.rollingShutterSkew", long.class);
/**
* <p>Quality of lens shading correction applied
* to the image data.</p>
* <p>When set to OFF mode, no lens shading correction will be applied by the
* camera device, and an identity lens shading map data will be provided
* if <code>{@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode} == ON</code>. For example, for lens
* shading map with size of <code>[ 4, 3 ]</code>,
* the output {@link CaptureResult#STATISTICS_LENS_SHADING_CORRECTION_MAP android.statistics.lensShadingCorrectionMap} for this case will be an identity
* map shown below:</p>
* <pre><code>[ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 ]
* </code></pre>
* <p>When set to other modes, lens shading correction will be applied by the camera
* device. Applications can request lens shading map data by setting
* {@link CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE android.statistics.lensShadingMapMode} to ON, and then the camera device will provide lens
* shading map data in {@link CaptureResult#STATISTICS_LENS_SHADING_CORRECTION_MAP android.statistics.lensShadingCorrectionMap}; the returned shading map
* data will be the one applied by the camera device for this capture request.</p>
* <p>The shading map data may depend on the auto-exposure (AE) and AWB statistics, therefore
* the reliability of the map data may be affected by the AE and AWB algorithms. When AE and
* AWB are in AUTO modes({@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} <code>!=</code> OFF and {@link CaptureRequest#CONTROL_AWB_MODE android.control.awbMode} <code>!=</code>
* OFF), to get best results, it is recommended that the applications wait for the AE and AWB
* to be converged before using the returned shading map data.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #SHADING_MODE_OFF OFF}</li>
* <li>{@link #SHADING_MODE_FAST FAST}</li>
* <li>{@link #SHADING_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#SHADING_AVAILABLE_MODES android.shading.availableModes}</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#CONTROL_AE_MODE
* @see CaptureRequest#CONTROL_AWB_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see CameraCharacteristics#SHADING_AVAILABLE_MODES
* @see CaptureResult#STATISTICS_LENS_SHADING_CORRECTION_MAP
* @see CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE
* @see #SHADING_MODE_OFF
* @see #SHADING_MODE_FAST
* @see #SHADING_MODE_HIGH_QUALITY
*/
@PublicKey
public static final Key<Integer> SHADING_MODE =
new Key<Integer>("android.shading.mode", int.class);
/**
* <p>Operating mode for the face detector
* unit.</p>
* <p>Whether face detection is enabled, and whether it
* should output just the basic fields or the full set of
* fields.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #STATISTICS_FACE_DETECT_MODE_OFF OFF}</li>
* <li>{@link #STATISTICS_FACE_DETECT_MODE_SIMPLE SIMPLE}</li>
* <li>{@link #STATISTICS_FACE_DETECT_MODE_FULL FULL}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES android.statistics.info.availableFaceDetectModes}</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
* @see #STATISTICS_FACE_DETECT_MODE_OFF
* @see #STATISTICS_FACE_DETECT_MODE_SIMPLE
* @see #STATISTICS_FACE_DETECT_MODE_FULL
*/
@PublicKey
public static final Key<Integer> STATISTICS_FACE_DETECT_MODE =
new Key<Integer>("android.statistics.faceDetectMode", int.class);
/**
* <p>List of unique IDs for detected faces.</p>
* <p>Each detected face is given a unique ID that is valid for as long as the face is visible
* to the camera device. A face that leaves the field of view and later returns may be
* assigned a new ID.</p>
* <p>Only available if {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} == FULL
* This key is available on all devices.</p>
*
* @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
* @hide
*/
public static final Key<int[]> STATISTICS_FACE_IDS =
new Key<int[]>("android.statistics.faceIds", int[].class);
/**
* <p>List of landmarks for detected
* faces.</p>
* <p>The coordinate system is that of {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}, with
* <code>(0, 0)</code> being the top-left pixel of the active array.</p>
* <p>Only available if {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} == FULL
* This key is available on all devices.</p>
*
* @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
* @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
* @hide
*/
public static final Key<int[]> STATISTICS_FACE_LANDMARKS =
new Key<int[]>("android.statistics.faceLandmarks", int[].class);
/**
* <p>List of the bounding rectangles for detected
* faces.</p>
* <p>The coordinate system is that of {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}, with
* <code>(0, 0)</code> being the top-left pixel of the active array.</p>
* <p>Only available if {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} != OFF
* This key is available on all devices.</p>
*
* @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
* @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
* @hide
*/
public static final Key<android.graphics.Rect[]> STATISTICS_FACE_RECTANGLES =
new Key<android.graphics.Rect[]>("android.statistics.faceRectangles", android.graphics.Rect[].class);
/**
* <p>List of the face confidence scores for
* detected faces</p>
* <p>Only available if {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} != OFF.</p>
* <p><b>Range of valid values:</b><br>
* 1-100</p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
* @hide
*/
public static final Key<byte[]> STATISTICS_FACE_SCORES =
new Key<byte[]>("android.statistics.faceScores", byte[].class);
/**
* <p>List of the faces detected through camera face detection
* in this capture.</p>
* <p>Only available if {@link CaptureRequest#STATISTICS_FACE_DETECT_MODE android.statistics.faceDetectMode} <code>!=</code> OFF.</p>
* <p>This key is available on all devices.</p>
*
* @see CaptureRequest#STATISTICS_FACE_DETECT_MODE
*/
@PublicKey
@SyntheticKey
public static final Key<android.hardware.camera2.params.Face[]> STATISTICS_FACES =
new Key<android.hardware.camera2.params.Face[]>("android.statistics.faces", android.hardware.camera2.params.Face[].class);
/**
* <p>The shading map is a low-resolution floating-point map
* that lists the coefficients used to correct for vignetting, for each
* Bayer color channel.</p>
* <p>The least shaded section of the image should have a gain factor
* of 1; all other sections should have gains above 1.</p>
* <p>When {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} = TRANSFORM_MATRIX, the map
* must take into account the colorCorrection settings.</p>
* <p>The shading map is for the entire active pixel array, and is not
* affected by the crop region specified in the request. Each shading map
* entry is the value of the shading compensation map over a specific
* pixel on the sensor. Specifically, with a (N x M) resolution shading
* map, and an active pixel array size (W x H), shading map entry
* (x,y) ϵ (0 ... N-1, 0 ... M-1) is the value of the shading map at
* pixel ( ((W-1)/(N-1)) * x, ((H-1)/(M-1)) * y) for the four color channels.
* The map is assumed to be bilinearly interpolated between the sample points.</p>
* <p>The channel order is [R, Geven, Godd, B], where Geven is the green
* channel for the even rows of a Bayer pattern, and Godd is the odd rows.
* The shading map is stored in a fully interleaved format.</p>
* <p>The shading map should have on the order of 30-40 rows and columns,
* and must be smaller than 64x64.</p>
* <p>As an example, given a very small map defined as:</p>
* <pre><code>width,height = [ 4, 3 ]
* values =
* [ 1.3, 1.2, 1.15, 1.2, 1.2, 1.2, 1.15, 1.2,
* 1.1, 1.2, 1.2, 1.2, 1.3, 1.2, 1.3, 1.3,
* 1.2, 1.2, 1.25, 1.1, 1.1, 1.1, 1.1, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.2, 1.3, 1.25, 1.2,
* 1.3, 1.2, 1.2, 1.3, 1.2, 1.15, 1.1, 1.2,
* 1.2, 1.1, 1.0, 1.2, 1.3, 1.15, 1.2, 1.3 ]
* </code></pre>
* <p>The low-resolution scaling map images for each channel are
* (displayed using nearest-neighbor interpolation):</p>
* <p><img alt="Red lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/red_shading.png" />
* <img alt="Green (even rows) lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/green_e_shading.png" />
* <img alt="Green (odd rows) lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/green_o_shading.png" />
* <img alt="Blue lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/blue_shading.png" /></p>
* <p>As a visualization only, inverting the full-color map to recover an
* image of a gray wall (using bicubic interpolation for visual quality) as captured by the sensor gives:</p>
* <p><img alt="Image of a uniform white wall (inverse shading map)" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/inv_shading.png" /></p>
* <p><b>Range of valid values:</b><br>
* Each gain factor is &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 CaptureRequest#COLOR_CORRECTION_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
*/
@PublicKey
public static final Key<android.hardware.camera2.params.LensShadingMap> STATISTICS_LENS_SHADING_CORRECTION_MAP =
new Key<android.hardware.camera2.params.LensShadingMap>("android.statistics.lensShadingCorrectionMap", android.hardware.camera2.params.LensShadingMap.class);
/**
* <p>The shading map is a low-resolution floating-point map
* that lists the coefficients used to correct for vignetting, for each
* Bayer color channel of RAW image data.</p>
* <p>The least shaded section of the image should have a gain factor
* of 1; all other sections should have gains above 1.</p>
* <p>When {@link CaptureRequest#COLOR_CORRECTION_MODE android.colorCorrection.mode} = TRANSFORM_MATRIX, the map
* must take into account the colorCorrection settings.</p>
* <p>The shading map is for the entire active pixel array, and is not
* affected by the crop region specified in the request. Each shading map
* entry is the value of the shading compensation map over a specific
* pixel on the sensor. Specifically, with a (N x M) resolution shading
* map, and an active pixel array size (W x H), shading map entry
* (x,y) ϵ (0 ... N-1, 0 ... M-1) is the value of the shading map at
* pixel ( ((W-1)/(N-1)) * x, ((H-1)/(M-1)) * y) for the four color channels.
* The map is assumed to be bilinearly interpolated between the sample points.</p>
* <p>The channel order is [R, Geven, Godd, B], where Geven is the green
* channel for the even rows of a Bayer pattern, and Godd is the odd rows.
* The shading map is stored in a fully interleaved format, and its size
* is provided in the camera static metadata by android.lens.info.shadingMapSize.</p>
* <p>The shading map should have on the order of 30-40 rows and columns,
* and must be smaller than 64x64.</p>
* <p>As an example, given a very small map defined as:</p>
* <pre><code>android.lens.info.shadingMapSize = [ 4, 3 ]
* android.statistics.lensShadingMap =
* [ 1.3, 1.2, 1.15, 1.2, 1.2, 1.2, 1.15, 1.2,
* 1.1, 1.2, 1.2, 1.2, 1.3, 1.2, 1.3, 1.3,
* 1.2, 1.2, 1.25, 1.1, 1.1, 1.1, 1.1, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.2, 1.3, 1.25, 1.2,
* 1.3, 1.2, 1.2, 1.3, 1.2, 1.15, 1.1, 1.2,
* 1.2, 1.1, 1.0, 1.2, 1.3, 1.15, 1.2, 1.3 ]
* </code></pre>
* <p>The low-resolution scaling map images for each channel are
* (displayed using nearest-neighbor interpolation):</p>
* <p><img alt="Red lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/red_shading.png" />
* <img alt="Green (even rows) lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/green_e_shading.png" />
* <img alt="Green (odd rows) lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/green_o_shading.png" />
* <img alt="Blue lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/blue_shading.png" /></p>
* <p>As a visualization only, inverting the full-color map to recover an
* image of a gray wall (using bicubic interpolation for visual quality)
* as captured by the sensor gives:</p>
* <p><img alt="Image of a uniform white wall (inverse shading map)" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/inv_shading.png" /></p>
* <p>Note that the RAW image data might be subject to lens shading
* correction not reported on this map. Query
* {@link CameraCharacteristics#SENSOR_INFO_LENS_SHADING_APPLIED android.sensor.info.lensShadingApplied} to see if RAW image data has subject
* to lens shading correction. If {@link CameraCharacteristics#SENSOR_INFO_LENS_SHADING_APPLIED android.sensor.info.lensShadingApplied}
* is TRUE, the RAW image data is subject to partial or full lens shading
* correction. In the case full lens shading correction is applied to RAW
* images, the gain factor map reported in this key will contain all 1.0 gains.
* In other words, the map reported in this key is the remaining lens shading
* that needs to be applied on the RAW image to get images without lens shading
* artifacts. See {@link CameraCharacteristics#REQUEST_MAX_NUM_OUTPUT_RAW android.request.maxNumOutputRaw} for a list of RAW image
* formats.</p>
* <p><b>Range of valid values:</b><br>
* Each gain factor is &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 CaptureRequest#COLOR_CORRECTION_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see CameraCharacteristics#REQUEST_MAX_NUM_OUTPUT_RAW
* @see CameraCharacteristics#SENSOR_INFO_LENS_SHADING_APPLIED
* @hide
*/
public static final Key<float[]> STATISTICS_LENS_SHADING_MAP =
new Key<float[]>("android.statistics.lensShadingMap", float[].class);
/**
* <p>The best-fit color channel gains calculated
* by the camera device's statistics units for the current output frame.</p>
* <p>This may be different than the gains used for this frame,
* since statistics processing on data from a new frame
* typically completes after the transform has already been
* applied to that frame.</p>
* <p>The 4 channel gains are defined in Bayer domain,
* see {@link CaptureRequest#COLOR_CORRECTION_GAINS android.colorCorrection.gains} for details.</p>
* <p>This value should always be calculated by the auto-white balance (AWB) block,
* regardless of the android.control.* current values.</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CaptureRequest#COLOR_CORRECTION_GAINS
* @deprecated
* @hide
*/
@Deprecated
public static final Key<float[]> STATISTICS_PREDICTED_COLOR_GAINS =
new Key<float[]>("android.statistics.predictedColorGains", float[].class);
/**
* <p>The best-fit color transform matrix estimate
* calculated by the camera device's statistics units for the current
* output frame.</p>
* <p>The camera device will provide the estimate from its
* statistics unit on the white balance transforms to use
* for the next frame. These are the values the camera device believes
* are the best fit for the current output frame. This may
* be different than the transform used for this frame, since
* statistics processing on data from a new frame typically
* completes after the transform has already been applied to
* that frame.</p>
* <p>These estimates must be provided for all frames, even if
* capture settings and color transforms are set by the application.</p>
* <p>This value should always be calculated by the auto-white balance (AWB) block,
* regardless of the android.control.* current values.</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
* @deprecated
* @hide
*/
@Deprecated
public static final Key<Rational[]> STATISTICS_PREDICTED_COLOR_TRANSFORM =
new Key<Rational[]>("android.statistics.predictedColorTransform", Rational[].class);
/**
* <p>The camera device estimated scene illumination lighting
* frequency.</p>
* <p>Many light sources, such as most fluorescent lights, flicker at a rate
* that depends on the local utility power standards. This flicker must be
* accounted for by auto-exposure routines to avoid artifacts in captured images.
* The camera device uses this entry to tell the application what the scene
* illuminant frequency is.</p>
* <p>When manual exposure control is enabled
* (<code>{@link CaptureRequest#CONTROL_AE_MODE android.control.aeMode} == OFF</code> or <code>{@link CaptureRequest#CONTROL_MODE android.control.mode} ==
* OFF</code>), the {@link CaptureRequest#CONTROL_AE_ANTIBANDING_MODE android.control.aeAntibandingMode} doesn't perform
* antibanding, and the application can ensure it selects
* exposure times that do not cause banding issues by looking
* into this metadata field. See
* {@link CaptureRequest#CONTROL_AE_ANTIBANDING_MODE android.control.aeAntibandingMode} for more details.</p>
* <p>Reports NONE if there doesn't appear to be flickering illumination.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #STATISTICS_SCENE_FLICKER_NONE NONE}</li>
* <li>{@link #STATISTICS_SCENE_FLICKER_50HZ 50HZ}</li>
* <li>{@link #STATISTICS_SCENE_FLICKER_60HZ 60HZ}</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 CaptureRequest#CONTROL_AE_ANTIBANDING_MODE
* @see CaptureRequest#CONTROL_AE_MODE
* @see CaptureRequest#CONTROL_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see #STATISTICS_SCENE_FLICKER_NONE
* @see #STATISTICS_SCENE_FLICKER_50HZ
* @see #STATISTICS_SCENE_FLICKER_60HZ
*/
@PublicKey
public static final Key<Integer> STATISTICS_SCENE_FLICKER =
new Key<Integer>("android.statistics.sceneFlicker", int.class);
/**
* <p>Operating mode for hot pixel map generation.</p>
* <p>If set to <code>true</code>, a hot pixel map is returned in {@link CaptureResult#STATISTICS_HOT_PIXEL_MAP android.statistics.hotPixelMap}.
* If set to <code>false</code>, no hot pixel map will be returned.</p>
* <p><b>Range of valid values:</b><br>
* {@link CameraCharacteristics#STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES android.statistics.info.availableHotPixelMapModes}</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CaptureResult#STATISTICS_HOT_PIXEL_MAP
* @see CameraCharacteristics#STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES
*/
@PublicKey
public static final Key<Boolean> STATISTICS_HOT_PIXEL_MAP_MODE =
new Key<Boolean>("android.statistics.hotPixelMapMode", boolean.class);
/**
* <p>List of <code>(x, y)</code> coordinates of hot/defective pixels on the sensor.</p>
* <p>A coordinate <code>(x, y)</code> must lie between <code>(0, 0)</code>, and
* <code>(width - 1, height - 1)</code> (inclusive), which are the top-left and
* bottom-right of the pixel array, respectively. The width and
* height dimensions are given in {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize}.
* This may include hot pixels that lie outside of the active array
* bounds given by {@link CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE android.sensor.info.activeArraySize}.</p>
* <p><b>Range of valid values:</b><br></p>
* <p>n &lt;= number of pixels on the sensor.
* The <code>(x, y)</code> coordinates must be bounded by
* {@link CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE android.sensor.info.pixelArraySize}.</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
* @see CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
*/
@PublicKey
public static final Key<android.graphics.Point[]> STATISTICS_HOT_PIXEL_MAP =
new Key<android.graphics.Point[]>("android.statistics.hotPixelMap", android.graphics.Point[].class);
/**
* <p>Whether the camera device will output the lens
* shading map in output result metadata.</p>
* <p>When set to ON,
* android.statistics.lensShadingMap will be provided in
* the output result metadata.</p>
* <p>ON is always supported on devices with the RAW capability.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #STATISTICS_LENS_SHADING_MAP_MODE_OFF OFF}</li>
* <li>{@link #STATISTICS_LENS_SHADING_MAP_MODE_ON ON}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES android.statistics.info.availableLensShadingMapModes}</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 CameraCharacteristics#STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES
* @see #STATISTICS_LENS_SHADING_MAP_MODE_OFF
* @see #STATISTICS_LENS_SHADING_MAP_MODE_ON
*/
@PublicKey
public static final Key<Integer> STATISTICS_LENS_SHADING_MAP_MODE =
new Key<Integer>("android.statistics.lensShadingMapMode", int.class);
/**
* <p>Tonemapping / contrast / gamma curve for the blue
* channel, to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
* CONTRAST_CURVE.</p>
* <p>See android.tonemap.curveRed for more details.</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
* @hide
*/
public static final Key<float[]> TONEMAP_CURVE_BLUE =
new Key<float[]>("android.tonemap.curveBlue", float[].class);
/**
* <p>Tonemapping / contrast / gamma curve for the green
* channel, to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
* CONTRAST_CURVE.</p>
* <p>See android.tonemap.curveRed for more details.</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
* @hide
*/
public static final Key<float[]> TONEMAP_CURVE_GREEN =
new Key<float[]>("android.tonemap.curveGreen", float[].class);
/**
* <p>Tonemapping / contrast / gamma curve for the red
* channel, to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
* CONTRAST_CURVE.</p>
* <p>Each channel's curve is defined by an array of control points:</p>
* <pre><code>android.tonemap.curveRed =
* [ P0in, P0out, P1in, P1out, P2in, P2out, P3in, P3out, ..., PNin, PNout ]
* 2 &lt;= N &lt;= {@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}</code></pre>
* <p>These are sorted in order of increasing <code>Pin</code>; it is
* required that input values 0.0 and 1.0 are included in the list to
* define a complete mapping. For input values between control points,
* the camera device must linearly interpolate between the control
* points.</p>
* <p>Each curve can have an independent number of points, and the number
* of points can be less than max (that is, the request doesn't have to
* always provide a curve with number of points equivalent to
* {@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}).</p>
* <p>A few examples, and their corresponding graphical mappings; these
* only specify the red channel and the precision is limited to 4
* digits, for conciseness.</p>
* <p>Linear mapping:</p>
* <pre><code>android.tonemap.curveRed = [ 0, 0, 1.0, 1.0 ]
* </code></pre>
* <p><img alt="Linear mapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/linear_tonemap.png" /></p>
* <p>Invert mapping:</p>
* <pre><code>android.tonemap.curveRed = [ 0, 1.0, 1.0, 0 ]
* </code></pre>
* <p><img alt="Inverting mapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/inverse_tonemap.png" /></p>
* <p>Gamma 1/2.2 mapping, with 16 control points:</p>
* <pre><code>android.tonemap.curveRed = [
* 0.0000, 0.0000, 0.0667, 0.2920, 0.1333, 0.4002, 0.2000, 0.4812,
* 0.2667, 0.5484, 0.3333, 0.6069, 0.4000, 0.6594, 0.4667, 0.7072,
* 0.5333, 0.7515, 0.6000, 0.7928, 0.6667, 0.8317, 0.7333, 0.8685,
* 0.8000, 0.9035, 0.8667, 0.9370, 0.9333, 0.9691, 1.0000, 1.0000 ]
* </code></pre>
* <p><img alt="Gamma = 1/2.2 tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/gamma_tonemap.png" /></p>
* <p>Standard sRGB gamma mapping, per IEC 61966-2-1:1999, with 16 control points:</p>
* <pre><code>android.tonemap.curveRed = [
* 0.0000, 0.0000, 0.0667, 0.2864, 0.1333, 0.4007, 0.2000, 0.4845,
* 0.2667, 0.5532, 0.3333, 0.6125, 0.4000, 0.6652, 0.4667, 0.7130,
* 0.5333, 0.7569, 0.6000, 0.7977, 0.6667, 0.8360, 0.7333, 0.8721,
* 0.8000, 0.9063, 0.8667, 0.9389, 0.9333, 0.9701, 1.0000, 1.0000 ]
* </code></pre>
* <p><img alt="sRGB tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
* <p><b>Range of valid values:</b><br>
* 0-1 on both input and output coordinates, normalized
* as a floating-point value such that 0 == black and 1 == white.</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 CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS
* @see CaptureRequest#TONEMAP_MODE
* @hide
*/
public static final Key<float[]> TONEMAP_CURVE_RED =
new Key<float[]>("android.tonemap.curveRed", float[].class);
/**
* <p>Tonemapping / contrast / gamma curve to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode}
* is CONTRAST_CURVE.</p>
* <p>The tonemapCurve consist of three curves for each of red, green, and blue
* channels respectively. The following example uses the red channel as an
* example. The same logic applies to green and blue channel.
* Each channel's curve is defined by an array of control points:</p>
* <pre><code>curveRed =
* [ P0(in, out), P1(in, out), P2(in, out), P3(in, out), ..., PN(in, out) ]
* 2 &lt;= N &lt;= {@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}</code></pre>
* <p>These are sorted in order of increasing <code>Pin</code>; it is always
* guaranteed that input values 0.0 and 1.0 are included in the list to
* define a complete mapping. For input values between control points,
* the camera device must linearly interpolate between the control
* points.</p>
* <p>Each curve can have an independent number of points, and the number
* of points can be less than max (that is, the request doesn't have to
* always provide a curve with number of points equivalent to
* {@link CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS android.tonemap.maxCurvePoints}).</p>
* <p>A few examples, and their corresponding graphical mappings; these
* only specify the red channel and the precision is limited to 4
* digits, for conciseness.</p>
* <p>Linear mapping:</p>
* <pre><code>curveRed = [ (0, 0), (1.0, 1.0) ]
* </code></pre>
* <p><img alt="Linear mapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/linear_tonemap.png" /></p>
* <p>Invert mapping:</p>
* <pre><code>curveRed = [ (0, 1.0), (1.0, 0) ]
* </code></pre>
* <p><img alt="Inverting mapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/inverse_tonemap.png" /></p>
* <p>Gamma 1/2.2 mapping, with 16 control points:</p>
* <pre><code>curveRed = [
* (0.0000, 0.0000), (0.0667, 0.2920), (0.1333, 0.4002), (0.2000, 0.4812),
* (0.2667, 0.5484), (0.3333, 0.6069), (0.4000, 0.6594), (0.4667, 0.7072),
* (0.5333, 0.7515), (0.6000, 0.7928), (0.6667, 0.8317), (0.7333, 0.8685),
* (0.8000, 0.9035), (0.8667, 0.9370), (0.9333, 0.9691), (1.0000, 1.0000) ]
* </code></pre>
* <p><img alt="Gamma = 1/2.2 tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/gamma_tonemap.png" /></p>
* <p>Standard sRGB gamma mapping, per IEC 61966-2-1:1999, with 16 control points:</p>
* <pre><code>curveRed = [
* (0.0000, 0.0000), (0.0667, 0.2864), (0.1333, 0.4007), (0.2000, 0.4845),
* (0.2667, 0.5532), (0.3333, 0.6125), (0.4000, 0.6652), (0.4667, 0.7130),
* (0.5333, 0.7569), (0.6000, 0.7977), (0.6667, 0.8360), (0.7333, 0.8721),
* (0.8000, 0.9063), (0.8667, 0.9389), (0.9333, 0.9701), (1.0000, 1.0000) ]
* </code></pre>
* <p><img alt="sRGB tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></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 CameraCharacteristics#TONEMAP_MAX_CURVE_POINTS
* @see CaptureRequest#TONEMAP_MODE
*/
@PublicKey
@SyntheticKey
public static final Key<android.hardware.camera2.params.TonemapCurve> TONEMAP_CURVE =
new Key<android.hardware.camera2.params.TonemapCurve>("android.tonemap.curve", android.hardware.camera2.params.TonemapCurve.class);
/**
* <p>High-level global contrast/gamma/tonemapping control.</p>
* <p>When switching to an application-defined contrast curve by setting
* {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} to CONTRAST_CURVE, the curve is defined
* per-channel with a set of <code>(in, out)</code> points that specify the
* mapping from input high-bit-depth pixel value to the output
* low-bit-depth value. Since the actual pixel ranges of both input
* and output may change depending on the camera pipeline, the values
* are specified by normalized floating-point numbers.</p>
* <p>More-complex color mapping operations such as 3D color look-up
* tables, selective chroma enhancement, or other non-linear color
* transforms will be disabled when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
* CONTRAST_CURVE.</p>
* <p>When using either FAST or HIGH_QUALITY, the camera device will
* emit its own tonemap curve in {@link CaptureRequest#TONEMAP_CURVE android.tonemap.curve}.
* These values are always available, and as close as possible to the
* actually used nonlinear/nonglobal transforms.</p>
* <p>If a request is sent with CONTRAST_CURVE with the camera device's
* provided curve in FAST or HIGH_QUALITY, the image's tonemap will be
* roughly the same.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #TONEMAP_MODE_CONTRAST_CURVE CONTRAST_CURVE}</li>
* <li>{@link #TONEMAP_MODE_FAST FAST}</li>
* <li>{@link #TONEMAP_MODE_HIGH_QUALITY HIGH_QUALITY}</li>
* <li>{@link #TONEMAP_MODE_GAMMA_VALUE GAMMA_VALUE}</li>
* <li>{@link #TONEMAP_MODE_PRESET_CURVE PRESET_CURVE}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* {@link CameraCharacteristics#TONEMAP_AVAILABLE_TONE_MAP_MODES android.tonemap.availableToneMapModes}</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 CameraCharacteristics#TONEMAP_AVAILABLE_TONE_MAP_MODES
* @see CaptureRequest#TONEMAP_CURVE
* @see CaptureRequest#TONEMAP_MODE
* @see #TONEMAP_MODE_CONTRAST_CURVE
* @see #TONEMAP_MODE_FAST
* @see #TONEMAP_MODE_HIGH_QUALITY
* @see #TONEMAP_MODE_GAMMA_VALUE
* @see #TONEMAP_MODE_PRESET_CURVE
*/
@PublicKey
public static final Key<Integer> TONEMAP_MODE =
new Key<Integer>("android.tonemap.mode", int.class);
/**
* <p>Tonemapping curve to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
* GAMMA_VALUE</p>
* <p>The tonemap curve will be defined the following formula:
* * OUT = pow(IN, 1.0 / gamma)
* where IN and OUT is the input pixel value scaled to range [0.0, 1.0],
* pow is the power function and gamma is the gamma value specified by this
* key.</p>
* <p>The same curve will be applied to all color channels. The camera device
* may clip the input gamma value to its supported range. The actual applied
* value will be returned in capture result.</p>
* <p>The valid range of gamma value varies on different devices, but values
* within [1.0, 5.0] are guaranteed not to be clipped.</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CaptureRequest#TONEMAP_MODE
*/
@PublicKey
public static final Key<Float> TONEMAP_GAMMA =
new Key<Float>("android.tonemap.gamma", float.class);
/**
* <p>Tonemapping curve to use when {@link CaptureRequest#TONEMAP_MODE android.tonemap.mode} is
* PRESET_CURVE</p>
* <p>The tonemap curve will be defined by specified standard.</p>
* <p>sRGB (approximated by 16 control points):</p>
* <p><img alt="sRGB tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
* <p>Rec. 709 (approximated by 16 control points):</p>
* <p><img alt="Rec. 709 tonemapping curve" src="../../../../images/camera2/metadata/android.tonemap.curveRed/rec709_tonemap.png" /></p>
* <p>Note that above figures show a 16 control points approximation of preset
* curves. Camera devices may apply a different approximation to the curve.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #TONEMAP_PRESET_CURVE_SRGB SRGB}</li>
* <li>{@link #TONEMAP_PRESET_CURVE_REC709 REC709}</li>
* </ul></p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
*
* @see CaptureRequest#TONEMAP_MODE
* @see #TONEMAP_PRESET_CURVE_SRGB
* @see #TONEMAP_PRESET_CURVE_REC709
*/
@PublicKey
public static final Key<Integer> TONEMAP_PRESET_CURVE =
new Key<Integer>("android.tonemap.presetCurve", int.class);
/**
* <p>This LED is nominally used to indicate to the user
* that the camera is powered on and may be streaming images back to the
* Application Processor. In certain rare circumstances, the OS may
* disable this when video is processed locally and not transmitted to
* any untrusted applications.</p>
* <p>In particular, the LED <em>must</em> always be on when the data could be
* transmitted off the device. The LED <em>should</em> always be on whenever
* data is stored locally on the device.</p>
* <p>The LED <em>may</em> be off if a trusted application is using the data that
* doesn't violate the above rules.</p>
* <p><b>Optional</b> - This value may be {@code null} on some devices.</p>
* @hide
*/
public static final Key<Boolean> LED_TRANSMIT =
new Key<Boolean>("android.led.transmit", boolean.class);
/**
* <p>Whether black-level compensation is locked
* to its current values, or is free to vary.</p>
* <p>Whether the black level offset was locked for this frame. Should be
* ON if {@link CaptureRequest#BLACK_LEVEL_LOCK android.blackLevel.lock} was ON in the capture request, unless
* a change in other capture settings forced the camera device to
* perform a black level reset.</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#BLACK_LEVEL_LOCK
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
*/
@PublicKey
public static final Key<Boolean> BLACK_LEVEL_LOCK =
new Key<Boolean>("android.blackLevel.lock", boolean.class);
/**
* <p>The frame number corresponding to the last request
* with which the output result (metadata + buffers) has been fully
* synchronized.</p>
* <p>When a request is submitted to the camera device, there is usually a
* delay of several frames before the controls get applied. A camera
* device may either choose to account for this delay by implementing a
* pipeline and carefully submit well-timed atomic control updates, or
* it may start streaming control changes that span over several frame
* boundaries.</p>
* <p>In the latter case, whenever a request's settings change relative to
* the previous submitted request, the full set of changes may take
* multiple frame durations to fully take effect. Some settings may
* take effect sooner (in less frame durations) than others.</p>
* <p>While a set of control changes are being propagated, this value
* will be CONVERGING.</p>
* <p>Once it is fully known that a set of control changes have been
* finished propagating, and the resulting updated control settings
* have been read back by the camera device, this value will be set
* to a non-negative frame number (corresponding to the request to
* which the results have synchronized to).</p>
* <p>Older camera device implementations may not have a way to detect
* when all camera controls have been applied, and will always set this
* value to UNKNOWN.</p>
* <p>FULL capability devices will always have this value set to the
* frame number of the request corresponding to this result.</p>
* <p><em>Further details</em>:</p>
* <ul>
* <li>Whenever a request differs from the last request, any future
* results not yet returned may have this value set to CONVERGING (this
* could include any in-progress captures not yet returned by the camera
* device, for more details see pipeline considerations below).</li>
* <li>Submitting a series of multiple requests that differ from the
* previous request (e.g. r1, r2, r3 s.t. r1 != r2 != r3)
* moves the new synchronization frame to the last non-repeating
* request (using the smallest frame number from the contiguous list of
* repeating requests).</li>
* <li>Submitting the same request repeatedly will not change this value
* to CONVERGING, if it was already a non-negative value.</li>
* <li>When this value changes to non-negative, that means that all of the
* metadata controls from the request have been applied, all of the
* metadata controls from the camera device have been read to the
* updated values (into the result), and all of the graphics buffers
* corresponding to this result are also synchronized to the request.</li>
* </ul>
* <p><em>Pipeline considerations</em>:</p>
* <p>Submitting a request with updated controls relative to the previously
* submitted requests may also invalidate the synchronization state
* of all the results corresponding to currently in-flight requests.</p>
* <p>In other words, results for this current request and up to
* {@link CameraCharacteristics#REQUEST_PIPELINE_MAX_DEPTH android.request.pipelineMaxDepth} prior requests may have their
* android.sync.frameNumber change to CONVERGING.</p>
* <p><b>Possible values:</b>
* <ul>
* <li>{@link #SYNC_FRAME_NUMBER_CONVERGING CONVERGING}</li>
* <li>{@link #SYNC_FRAME_NUMBER_UNKNOWN UNKNOWN}</li>
* </ul></p>
* <p><b>Available values for this device:</b><br>
* Either a non-negative value corresponding to a
* <code>frame_number</code>, or one of the two enums (CONVERGING / UNKNOWN).</p>
* <p>This key is available on all devices.</p>
*
* @see CameraCharacteristics#REQUEST_PIPELINE_MAX_DEPTH
* @see #SYNC_FRAME_NUMBER_CONVERGING
* @see #SYNC_FRAME_NUMBER_UNKNOWN
* @hide
*/
public static final Key<Long> SYNC_FRAME_NUMBER =
new Key<Long>("android.sync.frameNumber", long.class);
/**
* <p>The amount of exposure time increase factor applied to the original output
* frame by the application processing before sending for reprocessing.</p>
* <p>This is optional, and will be supported if the camera device supports YUV_REPROCESSING
* capability ({@link CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES android.request.availableCapabilities} contains YUV_REPROCESSING).</p>
* <p>For some YUV reprocessing use cases, the application may choose to filter the original
* output frames to effectively reduce the noise to the same level as a frame that was
* captured with longer exposure time. To be more specific, assuming the original captured
* images were captured with a sensitivity of S and an exposure time of T, the model in
* the camera device is that the amount of noise in the image would be approximately what
* would be expected if the original capture parameters had been a sensitivity of
* S/effectiveExposureFactor and an exposure time of T*effectiveExposureFactor, rather
* than S and T respectively. If the captured images were processed by the application
* before being sent for reprocessing, then the application may have used image processing
* algorithms and/or multi-frame image fusion to reduce the noise in the
* application-processed images (input images). By using the effectiveExposureFactor
* control, the application can communicate to the camera device the actual noise level
* improvement in the application-processed image. With this information, the camera
* device can select appropriate noise reduction and edge enhancement parameters to avoid
* excessive noise reduction ({@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode}) and insufficient edge
* enhancement ({@link CaptureRequest#EDGE_MODE android.edge.mode}) being applied to the reprocessed frames.</p>
* <p>For example, for multi-frame image fusion use case, the application may fuse
* multiple output frames together to a final frame for reprocessing. When N image are
* fused into 1 image for reprocessing, the exposure time increase factor could be up to
* square root of N (based on a simple photon shot noise model). The camera device will
* adjust the reprocessing noise reduction and edge enhancement parameters accordingly to
* produce the best quality images.</p>
* <p>This is relative factor, 1.0 indicates the application hasn't processed the input
* buffer in a way that affects its effective exposure time.</p>
* <p>This control is only effective for YUV reprocessing capture request. For noise
* reduction reprocessing, it is only effective when <code>{@link CaptureRequest#NOISE_REDUCTION_MODE android.noiseReduction.mode} != OFF</code>.
* Similarly, for edge enhancement reprocessing, it is only effective when
* <code>{@link CaptureRequest#EDGE_MODE android.edge.mode} != OFF</code>.</p>
* <p><b>Units</b>: Relative exposure time increase factor.</p>
* <p><b>Range of valid values:</b><br>
* &gt;= 1.0</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 CaptureRequest#EDGE_MODE
* @see CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
* @see CaptureRequest#NOISE_REDUCTION_MODE
* @see CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
*/
@PublicKey
public static final Key<Float> REPROCESS_EFFECTIVE_EXPOSURE_FACTOR =
new Key<Float>("android.reprocess.effectiveExposureFactor", float.class);
/*~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~
* End generated code
*~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~@~O@*/
}