Added in API level 21

CameraCharacteristics

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Kotlin |Java

class CameraCharacteristics : CameraMetadata<CameraCharacteristics.Key<*>!>

kotlin.Any
↳	android.hardware.camera2.CameraMetadata<android.hardware.camera2.CameraCharacteristics.Key<*>>
	↳	android.hardware.camera2.CameraCharacteristics

The properties describing a CameraDevice.

These properties are primarily fixed for a given CameraDevice, and can be queried through the CameraManager interface with CameraManager.getCameraCharacteristics. Beginning with API level 32, some properties such as SENSOR_ORIENTATION may change dynamically based on the state of the device. For information on whether a specific value is fixed, see the documentation for its key.

When obtained by a client that does not hold the CAMERA permission, some metadata values are not included. The list of keys that require the permission is given by getKeysNeedingPermission.

CameraCharacteristics objects are immutable.

Summary

Nested classes
	Key A Key is used to do camera characteristics field lookups with CameraCharacteristics.get.

Inherited constants

From class CameraMetadata Int AUTOMOTIVE_LENS_FACING_EXTERIOR_FRONT The camera device faces the front of the vehicle body frame. Int AUTOMOTIVE_LENS_FACING_EXTERIOR_LEFT The camera device faces the left side of the vehicle body frame. Int AUTOMOTIVE_LENS_FACING_EXTERIOR_OTHER The camera device faces the outside of the vehicle body frame but not exactly one of the exterior sides defined by this enum. Applications should determine the exact facing direction from android.lens.poseRotation and android.lens.poseTranslation. Int AUTOMOTIVE_LENS_FACING_EXTERIOR_REAR The camera device faces the rear of the vehicle body frame. Int AUTOMOTIVE_LENS_FACING_EXTERIOR_RIGHT The camera device faces the right side of the vehicle body frame. Int AUTOMOTIVE_LENS_FACING_INTERIOR_OTHER The camera device faces the inside of the vehicle body frame but not exactly one of seats described by this enum. Applications should determine the exact facing direction from android.lens.poseRotation and android.lens.poseTranslation. Int AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_1_CENTER The camera device faces the center seat of the first row. Int AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_1_LEFT The camera device faces the left side seat of the first row. Int AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_1_RIGHT The camera device faces the right seat of the first row. Int AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_2_CENTER The camera device faces the center seat of the second row. Int AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_2_LEFT The camera device faces the left side seat of the second row. Int AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_2_RIGHT The camera device faces the right side seat of the second row. Int AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_3_CENTER The camera device faces the center seat of the third row. Int AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_3_LEFT The camera device faces the left side seat of the third row. Int AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_3_RIGHT The camera device faces the right seat of the third row. Int AUTOMOTIVE_LOCATION_EXTERIOR_FRONT The camera device exists outside of the vehicle body frame and on its front side. Int AUTOMOTIVE_LOCATION_EXTERIOR_LEFT The camera device exists outside and on left side of the vehicle body frame. Int AUTOMOTIVE_LOCATION_EXTERIOR_OTHER The camera exists outside of the vehicle body frame but not exactly on one of the exterior locations this enum defines. The applications should determine the exact location from android.lens.poseTranslation. Int AUTOMOTIVE_LOCATION_EXTERIOR_REAR The camera device exists outside of the vehicle body frame and on its rear side. Int AUTOMOTIVE_LOCATION_EXTERIOR_RIGHT The camera device exists outside and on right side of the vehicle body frame. Int AUTOMOTIVE_LOCATION_EXTRA_FRONT The camera device exists outside of the extra vehicle's body frame and on its front side. Int AUTOMOTIVE_LOCATION_EXTRA_LEFT The camera device exists outside and on left side of the extra vehicle body. Int AUTOMOTIVE_LOCATION_EXTRA_OTHER The camera device exists on an extra vehicle, such as the trailer, but not exactly on one of front, rear, left, or right side. Applications should determine the exact location from android.lens.poseTranslation. Int AUTOMOTIVE_LOCATION_EXTRA_REAR The camera device exists outside of the extra vehicle's body frame and on its rear side. Int AUTOMOTIVE_LOCATION_EXTRA_RIGHT The camera device exists outside and on right side of the extra vehicle body. Int AUTOMOTIVE_LOCATION_INTERIOR The camera device exists inside of the vehicle cabin. Int COLOR_CORRECTION_ABERRATION_MODE_FAST Aberration correction will not slow down capture rate relative to sensor raw output. Int COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY Aberration correction operates at improved quality but the capture rate might be reduced (relative to sensor raw output rate) Int COLOR_CORRECTION_ABERRATION_MODE_OFF No aberration correction is applied. Int COLOR_CORRECTION_MODE_FAST Color correction processing must not slow down capture rate relative to sensor raw output. Advanced white balance adjustments above and beyond the specified white balance pipeline may be applied. If AWB is enabled with android.control.awbMode != OFF, then the camera device uses the last frame's AWB values (or defaults if AWB has never been run). Int COLOR_CORRECTION_MODE_HIGH_QUALITY Color correction processing operates at improved quality but the capture rate might be reduced (relative to sensor raw output rate) Advanced white balance adjustments above and beyond the specified white balance pipeline may be applied. If AWB is enabled with android.control.awbMode != OFF, then the camera device uses the last frame's AWB values (or defaults if AWB has never been run). Int COLOR_CORRECTION_MODE_TRANSFORM_MATRIX Use the android.colorCorrection.transform matrix and android.colorCorrection.gains to do color conversion. All advanced white balance adjustments (not specified by our white balance pipeline) must be disabled. If AWB is enabled with android.control.awbMode != OFF, then TRANSFORM_MATRIX is ignored. The camera device will override this value to either FAST or HIGH_QUALITY. Int CONTROL_AE_ANTIBANDING_MODE_50HZ The camera device will adjust exposure duration to avoid banding problems with 50Hz illumination sources. Int CONTROL_AE_ANTIBANDING_MODE_60HZ The camera device will adjust exposure duration to avoid banding problems with 60Hz illumination sources. Int CONTROL_AE_ANTIBANDING_MODE_AUTO The camera device will automatically adapt its antibanding routine to the current illumination condition. This is the default mode if AUTO is available on given camera device. Int CONTROL_AE_ANTIBANDING_MODE_OFF The camera device will not adjust exposure duration to avoid banding problems. Int CONTROL_AE_MODE_OFF The camera device's autoexposure routine is disabled. The application-selected android.sensor.exposureTime, android.sensor.sensitivity and android.sensor.frameDuration are used by the camera device, along with android.flash.* fields, if there's a flash unit for this camera device. Note that auto-white balance (AWB) and auto-focus (AF) behavior is device dependent when AE is in OFF mode. To have consistent behavior across different devices, it is recommended to either set AWB and AF to OFF mode or lock AWB and AF before setting AE to OFF. See android.control.awbMode, android.control.afMode, android.control.awbLock, and android.control.afTrigger for more details. LEGACY devices do not support the OFF mode and will override attempts to use this value to ON. Int CONTROL_AE_MODE_ON The camera device's autoexposure routine is active, with no flash control. The application's values for android.sensor.exposureTime, android.sensor.sensitivity, and android.sensor.frameDuration are ignored. The application has control over the various android.flash.* fields. If the device supports manual flash strength control, i.e., if android.flash.singleStrengthMaxLevel and android.flash.torchStrengthMaxLevel are greater than 1, then the auto-exposure (AE) precapture metering sequence should be triggered for the configured flash mode and strength to avoid the image being incorrectly exposed at different android.flash.strengthLevel. Int CONTROL_AE_MODE_ON_ALWAYS_FLASH Like ON, except that the camera device also controls the camera's flash unit, always firing it for still captures. The flash may be fired during a precapture sequence (triggered by android.control.aePrecaptureTrigger) and will always be fired for captures for which the android.control.captureIntent field is set to STILL_CAPTURE Int CONTROL_AE_MODE_ON_AUTO_FLASH Like ON, except that the camera device also controls the camera's flash unit, firing it in low-light conditions. The flash may be fired during a precapture sequence (triggered by android.control.aePrecaptureTrigger) and may be fired for captures for which the android.control.captureIntent field is set to STILL_CAPTURE Int CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE Like ON_AUTO_FLASH, but with automatic red eye reduction. If deemed necessary by the camera device, a red eye reduction flash will fire during the precapture sequence. Int CONTROL_AE_MODE_ON_EXTERNAL_FLASH An external flash has been turned on. It informs the camera device that an external flash has been turned on, and that metering (and continuous focus if active) should be quickly recalculated to account for the external flash. Otherwise, this mode acts like ON. When the external flash is turned off, AE mode should be changed to one of the other available AE modes. If the camera device supports AE external flash mode, android.control.aeState must be FLASH_REQUIRED after the camera device finishes AE scan and it's too dark without flash. Int CONTROL_AE_MODE_ON_LOW_LIGHT_BOOST_BRIGHTNESS_PRIORITY Like 'ON' but applies additional brightness boost in low light scenes. When the scene lighting conditions are within the range defined by android.control.lowLightBoostInfoLuminanceRange this mode will apply additional brightness boost. This mode will automatically adjust the intensity of low light boost applied according to the scene lighting conditions. A darker scene will receive more boost while a brighter scene will receive less boost. This mode can ignore the set target frame rate to allow more light to be captured which can result in choppier motion. The frame rate can extend to lower than the android.control.aeAvailableTargetFpsRanges but will not go below 10 FPS. This mode can also increase the sensor sensitivity gain which can result in increased luma and chroma noise. The sensor sensitivity gain can extend to higher values beyond android.sensor.info.sensitivityRange. This mode may also apply additional processing to recover details in dark and bright areas of the image,and noise reduction at high sensitivity gain settings to manage the trade-off between light sensitivity and capture noise. This mode is restricted to two output surfaces. One output surface type can either be SurfaceView or TextureView. Another output surface type can either be MediaCodec or MediaRecorder. This mode cannot be used with a target FPS range higher than 30 FPS. If the session configuration is not supported, the AE mode reported in the CaptureResult will be 'ON' instead of 'ON_LOW_LIGHT_BOOST_BRIGHTNESS_PRIORITY'. When this AE mode is enabled, the CaptureResult field android.control.lowLightBoostState will indicate when low light boost is 'ACTIVE' or 'INACTIVE'. By default android.control.lowLightBoostState will be 'INACTIVE'. The low light boost is 'ACTIVE' once the scene lighting condition is less than the upper bound lux value defined by android.control.lowLightBoostInfoLuminanceRange. This mode will be 'INACTIVE' once the scene lighting condition is greater than the upper bound lux value defined by android.control.lowLightBoostInfoLuminanceRange. Int CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL The camera device will cancel any currently active or completed precapture metering sequence, the auto-exposure routine will return to its initial state. Int CONTROL_AE_PRECAPTURE_TRIGGER_IDLE The trigger is idle. Int CONTROL_AE_PRECAPTURE_TRIGGER_START The precapture metering sequence will be started by the camera device. The exact effect of the precapture trigger depends on the current AE mode and state. Int CONTROL_AE_STATE_CONVERGED AE has a good set of control values for the current scene. Int CONTROL_AE_STATE_FLASH_REQUIRED AE has a good set of control values, but flash needs to be fired for good quality still capture. Int CONTROL_AE_STATE_INACTIVE AE is off or recently reset. When a camera device is opened, it starts in this state. This is a transient state, the camera device may skip reporting this state in capture result. Int CONTROL_AE_STATE_LOCKED AE has been locked. Int CONTROL_AE_STATE_PRECAPTURE AE has been asked to do a precapture sequence and is currently executing it. Precapture can be triggered through setting android.control.aePrecaptureTrigger to START. Currently active and completed (if it causes camera device internal AE lock) precapture metering sequence can be canceled through setting android.control.aePrecaptureTrigger to CANCEL. Once PRECAPTURE completes, AE will transition to CONVERGED or FLASH_REQUIRED as appropriate. This is a transient state, the camera device may skip reporting this state in capture result. Int CONTROL_AE_STATE_SEARCHING AE doesn't yet have a good set of control values for the current scene. This is a transient state, the camera device may skip reporting this state in capture result. Int CONTROL_AF_MODE_AUTO Basic automatic focus mode. In this mode, the lens does not move unless the autofocus trigger action is called. When that trigger is activated, AF will transition to ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or NOT_FOCUSED). Always supported if lens is not fixed focus. Use android.lens.info.minimumFocusDistance to determine if lens is fixed-focus. Triggering AF_CANCEL resets the lens position to default, and sets the AF state to INACTIVE. Int CONTROL_AF_MODE_CONTINUOUS_PICTURE In this mode, the AF algorithm modifies the lens position continually to attempt to provide a constantly-in-focus image stream. The focusing behavior should be suitable for still image capture; typically this means focusing as fast as possible. When the AF trigger is not involved, the AF algorithm should start in INACTIVE state, and then transition into PASSIVE_SCAN and PASSIVE_FOCUSED states as appropriate as it attempts to maintain focus. When the AF trigger is activated, the algorithm should finish its PASSIVE_SCAN if active, and then transition into AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the lens position until a cancel AF trigger is received. When the AF cancel trigger is activated, the algorithm should transition back to INACTIVE and then act as if it has just been started. Int CONTROL_AF_MODE_CONTINUOUS_VIDEO In this mode, the AF algorithm modifies the lens position continually to attempt to provide a constantly-in-focus image stream. The focusing behavior should be suitable for good quality video recording; typically this means slower focus movement and no overshoots. When the AF trigger is not involved, the AF algorithm should start in INACTIVE state, and then transition into PASSIVE_SCAN and PASSIVE_FOCUSED states as appropriate. When the AF trigger is activated, the algorithm should immediately transition into AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the lens position until a cancel AF trigger is received. Once cancel is received, the algorithm should transition back to INACTIVE and resume passive scan. Note that this behavior is not identical to CONTINUOUS_PICTURE, since an ongoing PASSIVE_SCAN must immediately be canceled. Int CONTROL_AF_MODE_EDOF Extended depth of field (digital focus) mode. The camera device will produce images with an extended depth of field automatically; no special focusing operations need to be done before taking a picture. AF triggers are ignored, and the AF state will always be INACTIVE. Int CONTROL_AF_MODE_MACRO Close-up focusing mode. In this mode, the lens does not move unless the autofocus trigger action is called. When that trigger is activated, AF will transition to ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or NOT_FOCUSED). This mode is optimized for focusing on objects very close to the camera. When that trigger is activated, AF will transition to ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or NOT_FOCUSED). Triggering cancel AF resets the lens position to default, and sets the AF state to INACTIVE. Int CONTROL_AF_MODE_OFF The auto-focus routine does not control the lens; android.lens.focusDistance is controlled by the application. Int CONTROL_AF_SCENE_CHANGE_DETECTED Scene change is detected within the AF region(s). Int CONTROL_AF_SCENE_CHANGE_NOT_DETECTED Scene change is not detected within the AF region(s). Int CONTROL_AF_STATE_ACTIVE_SCAN AF is performing an AF scan because it was triggered by AF trigger. Only used by AUTO or MACRO AF modes. This is a transient state, the camera device may skip reporting this state in capture result. Int CONTROL_AF_STATE_FOCUSED_LOCKED AF believes it is focused correctly and has locked focus. This state is reached only after an explicit START AF trigger has been sent (android.control.afTrigger), when good focus has been obtained. The lens will remain stationary until the AF mode (android.control.afMode) is changed or a new AF trigger is sent to the camera device (android.control.afTrigger). Int CONTROL_AF_STATE_INACTIVE AF is off or has not yet tried to scan/been asked to scan. When a camera device is opened, it starts in this state. This is a transient state, the camera device may skip reporting this state in capture result. Int CONTROL_AF_STATE_NOT_FOCUSED_LOCKED AF has failed to focus successfully and has locked focus. This state is reached only after an explicit START AF trigger has been sent (android.control.afTrigger), when good focus cannot be obtained. The lens will remain stationary until the AF mode (android.control.afMode) is changed or a new AF trigger is sent to the camera device (android.control.afTrigger). Int CONTROL_AF_STATE_PASSIVE_FOCUSED AF currently believes it is in focus, but may restart scanning at any time. Only used by CONTINUOUS_* AF modes. This is a transient state, the camera device may skip reporting this state in capture result. Int CONTROL_AF_STATE_PASSIVE_SCAN AF is currently performing an AF scan initiated the camera device in a continuous autofocus mode. Only used by CONTINUOUS_* AF modes. This is a transient state, the camera device may skip reporting this state in capture result. Int CONTROL_AF_STATE_PASSIVE_UNFOCUSED AF finished a passive scan without finding focus, and may restart scanning at any time. Only used by CONTINUOUS_* AF modes. This is a transient state, the camera device may skip reporting this state in capture result. LEGACY camera devices do not support this state. When a passive scan has finished, it will always go to PASSIVE_FOCUSED. Int CONTROL_AF_TRIGGER_CANCEL Autofocus will return to its initial state, and cancel any currently active trigger. Int CONTROL_AF_TRIGGER_IDLE The trigger is idle. Int CONTROL_AF_TRIGGER_START Autofocus will trigger now. Int CONTROL_AUTOFRAMING_OFF Disable autoframing. Int CONTROL_AUTOFRAMING_ON Enable autoframing to keep people in the frame's field of view. Int CONTROL_AUTOFRAMING_STATE_CONVERGED Auto-framing has reached a stable state (frame/fov is not being adjusted). The state may transition back to FRAMING if the scene changes. Int CONTROL_AUTOFRAMING_STATE_FRAMING Auto-framing is in process - either zooming in, zooming out or pan is taking place. Int CONTROL_AUTOFRAMING_STATE_INACTIVE Auto-framing is inactive. Int CONTROL_AWB_MODE_AUTO The camera device's auto-white balance routine is active. The application's values for android.colorCorrection.transform and android.colorCorrection.gains are ignored. For devices that support the MANUAL_POST_PROCESSING capability, the values used by the camera device for the transform and gains will be available in the capture result for this request. Int CONTROL_AWB_MODE_CLOUDY_DAYLIGHT The camera device's auto-white balance routine is disabled; the camera device uses cloudy daylight light as the assumed scene illumination for white balance. The application's values for android.colorCorrection.transform and android.colorCorrection.gains are ignored. For devices that support the MANUAL_POST_PROCESSING capability, the values used by the camera device for the transform and gains will be available in the capture result for this request. Int CONTROL_AWB_MODE_DAYLIGHT The camera device's auto-white balance routine is disabled; the camera device uses daylight light as the assumed scene illumination for white balance. While the exact white balance transforms are up to the camera device, they will approximately match the CIE standard illuminant D65. The application's values for android.colorCorrection.transform and android.colorCorrection.gains are ignored. For devices that support the MANUAL_POST_PROCESSING capability, the values used by the camera device for the transform and gains will be available in the capture result for this request. Int CONTROL_AWB_MODE_FLUORESCENT The camera device's auto-white balance routine is disabled; the camera device uses fluorescent light as the assumed scene illumination for white balance. While the exact white balance transforms are up to the camera device, they will approximately match the CIE standard illuminant F2. The application's values for android.colorCorrection.transform and android.colorCorrection.gains are ignored. For devices that support the MANUAL_POST_PROCESSING capability, the values used by the camera device for the transform and gains will be available in the capture result for this request. Int CONTROL_AWB_MODE_INCANDESCENT The camera device's auto-white balance routine is disabled; the camera device uses incandescent light as the assumed scene illumination for white balance. While the exact white balance transforms are up to the camera device, they will approximately match the CIE standard illuminant A. The application's values for android.colorCorrection.transform and android.colorCorrection.gains are ignored. For devices that support the MANUAL_POST_PROCESSING capability, the values used by the camera device for the transform and gains will be available in the capture result for this request. Int CONTROL_AWB_MODE_OFF The camera device's auto-white balance routine is disabled. The application-selected color transform matrix (android.colorCorrection.transform) and gains (android.colorCorrection.gains) are used by the camera device for manual white balance control. Int CONTROL_AWB_MODE_SHADE The camera device's auto-white balance routine is disabled; the camera device uses shade light as the assumed scene illumination for white balance. The application's values for android.colorCorrection.transform and android.colorCorrection.gains are ignored. For devices that support the MANUAL_POST_PROCESSING capability, the values used by the camera device for the transform and gains will be available in the capture result for this request. Int CONTROL_AWB_MODE_TWILIGHT The camera device's auto-white balance routine is disabled; the camera device uses twilight light as the assumed scene illumination for white balance. The application's values for android.colorCorrection.transform and android.colorCorrection.gains are ignored. For devices that support the MANUAL_POST_PROCESSING capability, the values used by the camera device for the transform and gains will be available in the capture result for this request. Int CONTROL_AWB_MODE_WARM_FLUORESCENT The camera device's auto-white balance routine is disabled; the camera device uses warm fluorescent light as the assumed scene illumination for white balance. While the exact white balance transforms are up to the camera device, they will approximately match the CIE standard illuminant F4. The application's values for android.colorCorrection.transform and android.colorCorrection.gains are ignored. For devices that support the MANUAL_POST_PROCESSING capability, the values used by the camera device for the transform and gains will be available in the capture result for this request. Int CONTROL_AWB_STATE_CONVERGED AWB has a good set of control values for the current scene. Int CONTROL_AWB_STATE_INACTIVE AWB is not in auto mode, or has not yet started metering. When a camera device is opened, it starts in this state. This is a transient state, the camera device may skip reporting this state in capture result. Int CONTROL_AWB_STATE_LOCKED AWB has been locked. Int CONTROL_AWB_STATE_SEARCHING AWB doesn't yet have a good set of control values for the current scene. This is a transient state, the camera device may skip reporting this state in capture result. Int CONTROL_CAPTURE_INTENT_CUSTOM The goal of this request doesn't fall into the other categories. The camera device will default to preview-like behavior. Int CONTROL_CAPTURE_INTENT_MANUAL This request is for manual capture use case where the applications want to directly control the capture parameters. For example, the application may wish to manually control android.sensor.exposureTime, android.sensor.sensitivity, etc. Int CONTROL_CAPTURE_INTENT_MOTION_TRACKING This request is for a motion tracking use case, where the application will use camera and inertial sensor data to locate and track objects in the world. The camera device auto-exposure routine will limit the exposure time of the camera to no more than 20 milliseconds, to minimize motion blur. Int CONTROL_CAPTURE_INTENT_PREVIEW This request is for a preview-like use case. The precapture trigger may be used to start off a metering w/flash sequence. Int CONTROL_CAPTURE_INTENT_STILL_CAPTURE This request is for a still capture-type use case. If the flash unit is under automatic control, it may fire as needed. Int CONTROL_CAPTURE_INTENT_VIDEO_RECORD This request is for a video recording use case. Int CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT This request is for a video snapshot (still image while recording video) use case. The camera device should take the highest-quality image possible (given the other settings) without disrupting the frame rate of video recording. Int CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG This request is for a ZSL usecase; the application will stream full-resolution images and reprocess one or several later for a final capture. Int CONTROL_EFFECT_MODE_AQUA An "aqua" effect where a blue hue is added to the image. Int CONTROL_EFFECT_MODE_BLACKBOARD A "blackboard" effect where the image is typically displayed as regions of black, with white or grey details. Int CONTROL_EFFECT_MODE_MONO A "monocolor" effect where the image is mapped into a single color. This will typically be grayscale. Int CONTROL_EFFECT_MODE_NEGATIVE A "photo-negative" effect where the image's colors are inverted. Int CONTROL_EFFECT_MODE_OFF No color effect will be applied. Int CONTROL_EFFECT_MODE_POSTERIZE A "posterization" effect where the image uses discrete regions of tone rather than a continuous gradient of tones. Int CONTROL_EFFECT_MODE_SEPIA A "sepia" effect where the image is mapped into warm gray, red, and brown tones. Int CONTROL_EFFECT_MODE_SOLARIZE A "solarisation" effect (Sabattier effect) where the image is wholly or partially reversed in tone. Int CONTROL_EFFECT_MODE_WHITEBOARD A "whiteboard" effect where the image is typically displayed as regions of white, with black or grey details. Int CONTROL_EXTENDED_SCENE_MODE_BOKEH_CONTINUOUS Bokeh effect must not slow down capture rate relative to sensor raw output, and the effect is applied to all processed streams no larger than the maximum streaming dimension. This mode should be used if performance and power are a priority, such as video recording. Int CONTROL_EXTENDED_SCENE_MODE_BOKEH_STILL_CAPTURE High quality bokeh mode is enabled for all non-raw streams (including YUV, JPEG, and IMPLEMENTATION_DEFINED) when capture intent is STILL_CAPTURE. Due to the extra image processing, this mode may introduce additional stall to non-raw streams. This mode should be used in high quality still capture use case. Int CONTROL_EXTENDED_SCENE_MODE_DISABLED Extended scene mode is disabled. Int CONTROL_LOW_LIGHT_BOOST_STATE_ACTIVE The AE mode 'ON_LOW_LIGHT_BOOST_BRIGHTNESS_PRIORITY' is enabled and applied. Int CONTROL_LOW_LIGHT_BOOST_STATE_INACTIVE The AE mode 'ON_LOW_LIGHT_BOOST_BRIGHTNESS_PRIORITY' is enabled but not applied. Int CONTROL_MODE_AUTO Use settings for each individual 3A routine. Manual control of capture parameters is disabled. All controls in android.control.* besides sceneMode take effect. Int CONTROL_MODE_OFF Full application control of pipeline. All control by the device's metering and focusing (3A) routines is disabled, and no other settings in android.control.* have any effect, except that android.control.captureIntent may be used by the camera device to select post-processing values for processing blocks that do not allow for manual control, or are not exposed by the camera API. However, the camera device's 3A routines may continue to collect statistics and update their internal state so that when control is switched to AUTO mode, good control values can be immediately applied. Int CONTROL_MODE_OFF_KEEP_STATE Same as OFF mode, except that this capture will not be used by camera device background auto-exposure, auto-white balance and auto-focus algorithms (3A) to update their statistics. Specifically, the 3A routines are locked to the last values set from a request with AUTO, OFF, or USE_SCENE_MODE, and any statistics or state updates collected from manual captures with OFF_KEEP_STATE will be discarded by the camera device. Int CONTROL_MODE_USE_EXTENDED_SCENE_MODE Use a specific extended scene mode. When extended scene mode is on, the camera device may override certain control parameters, such as targetFpsRange, AE, AWB, and AF modes, to achieve best power and quality tradeoffs. Only the mandatory stream combinations of LIMITED hardware level are guaranteed. This setting can only be used if extended scene mode is supported (i.e. android.control.availableExtendedSceneModes contains some modes other than DISABLED). Int CONTROL_MODE_USE_SCENE_MODE Use a specific scene mode. Enabling this disables control.aeMode, control.awbMode and control.afMode controls; the camera device will ignore those settings while USE_SCENE_MODE is active (except for FACE_PRIORITY scene mode). Other control entries are still active. This setting can only be used if scene mode is supported (i.e. android.control.availableSceneModes contain some modes other than DISABLED). For extended scene modes such as BOKEH, please use USE_EXTENDED_SCENE_MODE instead. Int CONTROL_SCENE_MODE_ACTION Optimized for photos of quickly moving objects. Similar to SPORTS. Int CONTROL_SCENE_MODE_BARCODE Optimized for accurately capturing a photo of barcode for use by camera applications that wish to read the barcode value. Int CONTROL_SCENE_MODE_BEACH Optimized for bright, outdoor beach settings. Int CONTROL_SCENE_MODE_CANDLELIGHT Optimized for dim settings where the main light source is a candle. Int CONTROL_SCENE_MODE_DISABLED Indicates that no scene modes are set for a given capture request. Int CONTROL_SCENE_MODE_FACE_PRIORITY If face detection support exists, use face detection data for auto-focus, auto-white balance, and auto-exposure routines. If face detection statistics are disabled (i.e. android.statistics.faceDetectMode is set to OFF), this should still operate correctly (but will not return face detection statistics to the framework). Unlike the other scene modes, android.control.aeMode, android.control.awbMode, and android.control.afMode remain active when FACE_PRIORITY is set. Int CONTROL_SCENE_MODE_FIREWORKS Optimized for nighttime photos of fireworks. Int CONTROL_SCENE_MODE_HDR Turn on a device-specific high dynamic range (HDR) mode. In this scene mode, the camera device captures images that keep a larger range of scene illumination levels visible in the final image. For example, when taking a picture of a object in front of a bright window, both the object and the scene through the window may be visible when using HDR mode, while in normal AUTO mode, one or the other may be poorly exposed. As a tradeoff, HDR mode generally takes much longer to capture a single image, has no user control, and may have other artifacts depending on the HDR method used. Therefore, HDR captures operate at a much slower rate than regular captures. In this mode, on LIMITED or FULL devices, when a request is made with a android.control.captureIntent of STILL_CAPTURE, the camera device will capture an image using a high dynamic range capture technique. On LEGACY devices, captures that target a JPEG-format output will be captured with HDR, and the capture intent is not relevant. The HDR capture may involve the device capturing a burst of images internally and combining them into one, or it may involve the device using specialized high dynamic range capture hardware. In all cases, a single image is produced in response to a capture request submitted while in HDR mode. Since substantial post-processing is generally needed to produce an HDR image, only YUV, PRIVATE, and JPEG outputs are supported for LIMITED/FULL device HDR captures, and only JPEG outputs are supported for LEGACY HDR captures. Using a RAW output for HDR capture is not supported. Some devices may also support always-on HDR, which applies HDR processing at full frame rate. For these devices, intents other than STILL_CAPTURE will also produce an HDR output with no frame rate impact compared to normal operation, though the quality may be lower than for STILL_CAPTURE intents. If SCENE_MODE_HDR is used with unsupported output types or capture intents, the images captured will be as if the SCENE_MODE was not enabled at all. Int CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO This is deprecated, please use android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession and android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList for high speed video recording. Optimized for high speed video recording (frame rate >=60fps) use case. The supported high speed video sizes and fps ranges are specified in android.control.availableHighSpeedVideoConfigurations. To get desired output frame rates, the application is only allowed to select video size and fps range combinations listed in this static metadata. The fps range can be control via android.control.aeTargetFpsRange. In this mode, the camera device will override aeMode, awbMode, and afMode to ON, ON, and CONTINUOUS_VIDEO, respectively. All post-processing block mode controls will be overridden to be FAST. Therefore, no manual control of capture and post-processing parameters is possible. All other controls operate the same as when android.control.mode == AUTO. This means that all other android.control.* fields continue to work, such as android.control.aeTargetFpsRange android.control.aeExposureCompensation android.control.aeLock android.control.awbLock android.control.effectMode android.control.aeRegions android.control.afRegions android.control.awbRegions android.control.afTrigger android.control.aePrecaptureTrigger android.control.zoomRatio Outside of android.control.*, the following controls will work: android.flash.mode (automatic flash for still capture will not work since aeMode is ON) android.lens.opticalStabilizationMode (if it is supported) android.scaler.cropRegion android.statistics.faceDetectMode For high speed recording use case, the actual maximum supported frame rate may be lower than what camera can output, depending on the destination Surfaces for the image data. For example, if the destination surface is from video encoder, the application need check if the video encoder is capable of supporting the high frame rate for a given video size, or it will end up with lower recording frame rate. If the destination surface is from preview window, the preview frame rate will be bounded by the screen refresh rate. The camera device will only support up to 2 output high speed streams (processed non-stalling format defined in android.request.maxNumOutputStreams) in this mode. This control will be effective only if all of below conditions are true: The application created no more than maxNumHighSpeedStreams processed non-stalling format output streams, where maxNumHighSpeedStreams is calculated as min(2, android.request.maxNumOutputStreams[Processed (but not-stalling)]). The stream sizes are selected from the sizes reported by android.control.availableHighSpeedVideoConfigurations. No processed non-stalling or raw streams are configured. When above conditions are NOT satisfied, the controls of this mode and android.control.aeTargetFpsRange will be ignored by the camera device, the camera device will fall back to android.control.mode == AUTO, and the returned capture result metadata will give the fps range chosen by the camera device. Switching into or out of this mode may trigger some camera ISP/sensor reconfigurations, which may introduce extra latency. It is recommended that the application avoids unnecessary scene mode switch as much as possible. Int CONTROL_SCENE_MODE_LANDSCAPE Optimized for photos of distant macroscopic objects. Int CONTROL_SCENE_MODE_NIGHT Optimized for low-light settings. Int CONTROL_SCENE_MODE_NIGHT_PORTRAIT Optimized for still photos of people in low-light settings. Int CONTROL_SCENE_MODE_PARTY Optimized for dim, indoor settings with multiple moving people. Int CONTROL_SCENE_MODE_PORTRAIT Optimized for still photos of people. Int CONTROL_SCENE_MODE_SNOW Optimized for bright, outdoor settings containing snow. Int CONTROL_SCENE_MODE_SPORTS Optimized for photos of quickly moving people. Similar to ACTION. Int CONTROL_SCENE_MODE_STEADYPHOTO Optimized to avoid blurry photos due to small amounts of device motion (for example: due to hand shake). Int CONTROL_SCENE_MODE_SUNSET Optimized for scenes of the setting sun. Int CONTROL_SCENE_MODE_THEATRE Optimized for dim, indoor settings where flash must remain off. Int CONTROL_SETTINGS_OVERRIDE_OFF No keys are applied sooner than the other keys when applying CaptureRequest settings to the camera device. This is the default value. Int CONTROL_SETTINGS_OVERRIDE_ZOOM Zoom related keys are applied sooner than the other keys in the CaptureRequest. The zoom related keys are: android.control.zoomRatio android.scaler.cropRegion android.control.aeRegions android.control.awbRegions android.control.afRegions Even though android.control.aeRegions, android.control.awbRegions, and android.control.afRegions are not directly zoom related, applications typically scale these regions together with android.scaler.cropRegion to have a consistent mapping within the current field of view. In this aspect, they are related to android.scaler.cropRegion and android.control.zoomRatio. Int CONTROL_VIDEO_STABILIZATION_MODE_OFF Video stabilization is disabled. Int CONTROL_VIDEO_STABILIZATION_MODE_ON Video stabilization is enabled. Int CONTROL_VIDEO_STABILIZATION_MODE_PREVIEW_STABILIZATION Preview stabilization, where the preview in addition to all other non-RAW streams are stabilized with the same quality of stabilization, is enabled. This mode aims to give clients a 'what you see is what you get' effect. In this mode, the FoV reduction will be a maximum of 20 % both horizontally and vertically (10% from left, right, top, bottom) for the given zoom ratio / crop region. The resultant FoV will also be the same across all processed streams (that have the same aspect ratio). Int DISTORTION_CORRECTION_MODE_FAST Lens distortion correction is applied without reducing frame rate relative to sensor output. It may be the same as OFF if distortion correction would reduce frame rate relative to sensor. Int DISTORTION_CORRECTION_MODE_HIGH_QUALITY High-quality distortion correction is applied, at the cost of possibly reduced frame rate relative to sensor output. Int DISTORTION_CORRECTION_MODE_OFF No distortion correction is applied. Int EDGE_MODE_FAST Apply edge enhancement at a quality level that does not slow down frame rate relative to sensor output. It may be the same as OFF if edge enhancement will slow down frame rate relative to sensor. Int EDGE_MODE_HIGH_QUALITY Apply high-quality edge enhancement, at a cost of possibly reduced output frame rate. Int EDGE_MODE_OFF No edge enhancement is applied. Int EDGE_MODE_ZERO_SHUTTER_LAG Edge enhancement is applied at different levels for different output streams, based on resolution. Streams at maximum recording resolution (see android.hardware.camera2.CameraDevice#createCaptureSession) or below have edge enhancement applied, while higher-resolution streams have no edge enhancement applied. The level of edge enhancement for low-resolution streams is tuned so that frame rate is not impacted, and the quality is equal to or better than FAST (since it is only applied to lower-resolution outputs, quality may improve from FAST). This mode is intended to be used by applications operating in a zero-shutter-lag mode with YUV or PRIVATE reprocessing, where the application continuously captures high-resolution intermediate buffers into a circular buffer, from which a final image is produced via reprocessing when a user takes a picture. For such a use case, the high-resolution buffers must not have edge enhancement applied to maximize efficiency of preview and to avoid double-applying enhancement when reprocessed, while low-resolution buffers (used for recording or preview, generally) need edge enhancement applied for reasonable preview quality. This mode is guaranteed to be supported by devices that support either the YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities (android.request.availableCapabilities lists either of those capabilities) and it will be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template. Int EXTENSION_NIGHT_MODE_INDICATOR_OFF The camera has detected lighting conditions that are sufficiently bright. Night Mode Camera Extensions is available but may not be able to optimize the camera settings to take a higher quality photo. Int EXTENSION_NIGHT_MODE_INDICATOR_ON The camera has detected low-light conditions. It is recommended to use Night Mode Camera Extension to optimize the camera settings to take a high-quality photo in the dark. Int EXTENSION_NIGHT_MODE_INDICATOR_UNKNOWN The camera can't accurately assess the scene's lighting to determine if a Night Mode Camera Extension capture would improve the photo. This can happen when the current camera configuration doesn't support night mode indicator detection, such as when the auto exposure mode is ON_AUTO_FLASH, ON_ALWAYS_FLASH, ON_AUTO_FLASH_REDEYE, or ON_EXTERNAL_FLASH. Int FLASH_MODE_OFF Do not fire the flash for this capture. Int FLASH_MODE_SINGLE If the flash is available and charged, fire flash for this capture. Int FLASH_MODE_TORCH Transition flash to continuously on. Int FLASH_STATE_CHARGING Flash is charging and cannot be fired. Int FLASH_STATE_FIRED Flash fired for this capture. Int FLASH_STATE_PARTIAL Flash partially illuminated this frame. This is usually due to the next or previous frame having the flash fire, and the flash spilling into this capture due to hardware limitations. Int FLASH_STATE_READY Flash is ready to fire. Int FLASH_STATE_UNAVAILABLE No flash on camera. Int HOT_PIXEL_MODE_FAST Hot pixel correction is applied, without reducing frame rate relative to sensor raw output. The hotpixel map may be returned in android.statistics.hotPixelMap. Int HOT_PIXEL_MODE_HIGH_QUALITY High-quality hot pixel correction is applied, at a cost of possibly reduced frame rate relative to sensor raw output. The hotpixel map may be returned in android.statistics.hotPixelMap. Int HOT_PIXEL_MODE_OFF No hot pixel correction is applied. The frame rate must not be reduced relative to sensor raw output for this option. The hotpixel map may be returned in android.statistics.hotPixelMap. Int INFO_SUPPORTED_HARDWARE_LEVEL_3 This camera device is capable of YUV reprocessing and RAW data capture, in addition to FULL-level capabilities. The stream configurations listed in the LEVEL_3, RAW, FULL, LEGACY and LIMITED tables in the documentation are guaranteed to be supported. The following additional capabilities are guaranteed to be supported: YUV_REPROCESSING capability (android.request.availableCapabilities contains YUV_REPROCESSING) RAW capability (android.request.availableCapabilities contains RAW) Int INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL This camera device is backed by an external camera connected to this Android device. The device has capability identical to a LIMITED level device, with the following exceptions: The device may not report lens/sensor related information such as android.lens.focalLength android.lens.info.hyperfocalDistance android.sensor.info.physicalSize android.sensor.info.whiteLevel android.sensor.blackLevelPattern android.sensor.info.colorFilterArrangement android.sensor.rollingShutterSkew The device will report 0 for android.sensor.orientation The device has less guarantee on stable framerate, as the framerate partly depends on the external camera being used. Int INFO_SUPPORTED_HARDWARE_LEVEL_FULL This camera device is capable of supporting advanced imaging applications. The stream configurations listed in the FULL, LEGACY and LIMITED tables in the documentation are guaranteed to be supported. A FULL device will support below capabilities: BURST_CAPTURE capability (android.request.availableCapabilities contains BURST_CAPTURE) Per frame control (android.sync.maxLatency == PER_FRAME_CONTROL) Manual sensor control (android.request.availableCapabilities contains MANUAL_SENSOR) Manual post-processing control (android.request.availableCapabilities contains MANUAL_POST_PROCESSING) The required exposure time range defined in android.sensor.info.exposureTimeRange The required maxFrameDuration defined in android.sensor.info.maxFrameDuration Note: Pre-API level 23, FULL devices also supported arbitrary cropping region (android.scaler.croppingType == FREEFORM); this requirement was relaxed in API level 23, and FULL devices may only support CENTERED cropping. Int INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY This camera device is running in backward compatibility mode. Only the stream configurations listed in the LEGACY table in the documentation are supported. A LEGACY device does not support per-frame control, manual sensor control, manual post-processing, arbitrary cropping regions, and has relaxed performance constraints. No additional capabilities beyond BACKWARD_COMPATIBLE will ever be listed by a LEGACY device in android.request.availableCapabilities. In addition, the android.control.aePrecaptureTrigger is not functional on LEGACY devices. Instead, every request that includes a JPEG-format output target is treated as triggering a still capture, internally executing a precapture trigger. This may fire the flash for flash power metering during precapture, and then fire the flash for the final capture, if a flash is available on the device and the AE mode is set to enable the flash. Devices that initially shipped with Android version Q or newer will not include any LEGACY-level devices. Int INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED This camera device does not have enough capabilities to qualify as a FULL device or better. Only the stream configurations listed in the LEGACY and LIMITED tables in the documentation are guaranteed to be supported. All LIMITED devices support the BACKWARDS_COMPATIBLE capability, indicating basic support for color image capture. The only exception is that the device may alternatively support only the DEPTH_OUTPUT capability, if it can only output depth measurements and not color images. LIMITED devices and above require the use of android.control.aePrecaptureTrigger to lock exposure metering (and calculate flash power, for cameras with flash) before capturing a high-quality still image. A LIMITED device that only lists the BACKWARDS_COMPATIBLE capability is only required to support full-automatic operation and post-processing (OFF is not supported for android.control.aeMode, android.control.afMode, or android.control.awbMode) Additional capabilities may optionally be supported by a LIMITED-level device, and can be checked for in android.request.availableCapabilities. Int LENS_FACING_BACK The camera device faces the opposite direction as the device's screen. Int LENS_FACING_EXTERNAL The camera device is an external camera, and has no fixed facing relative to the device's screen. Int LENS_FACING_FRONT The camera device faces the same direction as the device's screen. Int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE The lens focus distance is measured in diopters. However, setting the lens to the same focus distance on separate occasions may result in a different real focus distance, depending on factors such as the orientation of the device, the age of the focusing mechanism, and the device temperature. Int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED The lens focus distance is measured in diopters, and is calibrated. The lens mechanism is calibrated so that setting the same focus distance is repeatable on multiple occasions with good accuracy, and the focus distance corresponds to the real physical distance to the plane of best focus. Int LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED The lens focus distance is not accurate, and the units used for android.lens.focusDistance do not correspond to any physical units. Setting the lens to the same focus distance on separate occasions may result in a different real focus distance, depending on factors such as the orientation of the device, the age of the focusing mechanism, and the device temperature. The focus distance value will still be in the range of [0, android.lens.info.minimumFocusDistance], where 0 represents the farthest focus. Int LENS_OPTICAL_STABILIZATION_MODE_OFF Optical stabilization is unavailable. Int LENS_OPTICAL_STABILIZATION_MODE_ON Optical stabilization is enabled. Int LENS_POSE_REFERENCE_AUTOMOTIVE The value of android.lens.poseTranslation is relative to the origin of the automotive sensor coordinate system, which is at the center of the rear axle. Int LENS_POSE_REFERENCE_GYROSCOPE The value of android.lens.poseTranslation is relative to the position of the primary gyroscope of this Android device. Int LENS_POSE_REFERENCE_PRIMARY_CAMERA The value of android.lens.poseTranslation is relative to the optical center of the largest camera device facing the same direction as this camera. This is the default value for API levels before Android P. Int LENS_POSE_REFERENCE_UNDEFINED The camera device cannot represent the values of android.lens.poseTranslation and android.lens.poseRotation accurately enough. One such example is a camera device on the cover of a foldable phone: in order to measure the pose translation and rotation, some kind of hinge position sensor would be needed. The value of android.lens.poseTranslation must be all zeros, and android.lens.poseRotation must be values matching its default facing. Int LENS_STATE_MOVING One or several of the lens parameters (android.lens.focalLength, android.lens.focusDistance, android.lens.filterDensity or android.lens.aperture) is currently changing. Int LENS_STATE_STATIONARY The lens parameters (android.lens.focalLength, android.lens.focusDistance, android.lens.filterDensity and android.lens.aperture) are not changing. Int LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_APPROXIMATE A software mechanism is used to synchronize between the physical cameras. As a result, the timestamp of an image from a physical stream is only an approximation of the image sensor start-of-exposure time. Int LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_CALIBRATED The camera device supports frame timestamp synchronization at the hardware level, and the timestamp of a physical stream image accurately reflects its start-of-exposure time. Int NOISE_REDUCTION_MODE_FAST Noise reduction is applied without reducing frame rate relative to sensor output. It may be the same as OFF if noise reduction will reduce frame rate relative to sensor. Int NOISE_REDUCTION_MODE_HIGH_QUALITY High-quality noise reduction is applied, at the cost of possibly reduced frame rate relative to sensor output. Int NOISE_REDUCTION_MODE_MINIMAL MINIMAL noise reduction is applied without reducing frame rate relative to sensor output. Int NOISE_REDUCTION_MODE_OFF No noise reduction is applied. Int NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG Noise reduction is applied at different levels for different output streams, based on resolution. Streams at maximum recording resolution (see android.hardware.camera2.CameraDevice#createCaptureSession) or below have noise reduction applied, while higher-resolution streams have MINIMAL (if supported) or no noise reduction applied (if MINIMAL is not supported.) The degree of noise reduction for low-resolution streams is tuned so that frame rate is not impacted, and the quality is equal to or better than FAST (since it is only applied to lower-resolution outputs, quality may improve from FAST). This mode is intended to be used by applications operating in a zero-shutter-lag mode with YUV or PRIVATE reprocessing, where the application continuously captures high-resolution intermediate buffers into a circular buffer, from which a final image is produced via reprocessing when a user takes a picture. For such a use case, the high-resolution buffers must not have noise reduction applied to maximize efficiency of preview and to avoid over-applying noise filtering when reprocessing, while low-resolution buffers (used for recording or preview, generally) need noise reduction applied for reasonable preview quality. This mode is guaranteed to be supported by devices that support either the YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities (android.request.availableCapabilities lists either of those capabilities) and it will be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template. Int REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE The minimal set of capabilities that every camera device (regardless of android.info.supportedHardwareLevel) supports. This capability is listed by all normal devices, and indicates that the camera device has a feature set that's comparable to the baseline requirements for the older android.hardware.Camera API. Devices with the DEPTH_OUTPUT capability might not list this capability, indicating that they support only depth measurement, not standard color output. Int REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE The camera device supports capturing high-resolution images at >= 20 frames per second, in at least the uncompressed YUV format, when post-processing settings are set to FAST. Additionally, all image resolutions less than 24 megapixels can be captured at >= 10 frames per second. Here, 'high resolution' means at least 8 megapixels, or the maximum resolution of the device, whichever is smaller. More specifically, this means that a size matching the camera device's active array size is listed as a supported size for the android.graphics.ImageFormat#YUV_420_888 format in either android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes or android.hardware.camera2.params.StreamConfigurationMap#getHighResolutionOutputSizes, with a minimum frame duration for that format and size of either <= 1/20 s, or <= 1/10 s if the image size is less than 24 megapixels, respectively; and the android.control.aeAvailableTargetFpsRanges entry lists at least one FPS range where the minimum FPS is >= 1 / minimumFrameDuration for the maximum-size YUV_420_888 format. If that maximum size is listed in android.hardware.camera2.params.StreamConfigurationMap#getHighResolutionOutputSizes, then the list of resolutions for YUV_420_888 from android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes contains at least one resolution >= 8 megapixels, with a minimum frame duration of <= 1/20 s. If the device supports the android.graphics.ImageFormat#RAW10, android.graphics.ImageFormat#RAW12, android.graphics.ImageFormat#Y8, then those can also be captured at the same rate as the maximum-size YUV_420_888 resolution is. If the device supports the PRIVATE_REPROCESSING capability, then the same guarantees as for the YUV_420_888 format also apply to the android.graphics.ImageFormat#PRIVATE format. In addition, the android.sync.maxLatency field is guaranteed to have a value between 0 and 4, inclusive. android.control.aeLockAvailable and android.control.awbLockAvailable are also guaranteed to be true so burst capture with these two locks ON yields consistent image output. Int REQUEST_AVAILABLE_CAPABILITIES_COLOR_SPACE_PROFILES The device supports querying the possible combinations of color spaces, image formats, and dynamic range profiles supported by the camera and requesting a particular color space for a session via android.hardware.camera2.params.SessionConfiguration#setColorSpace. Cameras that enable this capability may or may not also implement dynamic range profiles. If they don't, android.hardware.camera2.params.ColorSpaceProfiles#getSupportedDynamicRangeProfiles will return only android.hardware.camera2.params.DynamicRangeProfiles#STANDARD and android.hardware.camera2.params.ColorSpaceProfiles#getSupportedColorSpacesForDynamicRange will assume support of the android.hardware.camera2.params.DynamicRangeProfiles#STANDARD profile in all combinations of color spaces and image formats. Int REQUEST_AVAILABLE_CAPABILITIES_CONSTRAINED_HIGH_SPEED_VIDEO The device supports constrained high speed video recording (frame rate >=120fps) use case. The camera device will support high speed capture session created by android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession, which only accepts high speed request lists created by android.hardware.camera2.CameraConstrainedHighSpeedCaptureSession#createHighSpeedRequestList. A camera device can still support high speed video streaming by advertising the high speed FPS ranges in android.control.aeAvailableTargetFpsRanges. For this case, all normal capture request per frame control and synchronization requirements will apply to the high speed fps ranges, the same as all other fps ranges. This capability describes the capability of a specialized operating mode with many limitations (see below), which is only targeted at high speed video recording. The supported high speed video sizes and fps ranges are specified in android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoFpsRanges. To get desired output frame rates, the application is only allowed to select video size and FPS range combinations provided by android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoSizes. The fps range can be controlled via android.control.aeTargetFpsRange. In this capability, the camera device will override aeMode, awbMode, and afMode to ON, AUTO, and CONTINUOUS_VIDEO, respectively. All post-processing block mode controls will be overridden to be FAST. Therefore, no manual control of capture and post-processing parameters is possible. All other controls operate the same as when android.control.mode == AUTO. This means that all other android.control.* fields continue to work, such as android.control.aeTargetFpsRange android.control.aeExposureCompensation android.control.aeLock android.control.awbLock android.control.effectMode android.control.aeRegions android.control.afRegions android.control.awbRegions android.control.afTrigger android.control.aePrecaptureTrigger android.control.zoomRatio Outside of android.control.*, the following controls will work: android.flash.mode (TORCH mode only, automatic flash for still capture will not work since aeMode is ON) android.lens.opticalStabilizationMode (if it is supported) android.scaler.cropRegion android.statistics.faceDetectMode (if it is supported) For high speed recording use case, the actual maximum supported frame rate may be lower than what camera can output, depending on the destination Surfaces for the image data. For example, if the destination surface is from video encoder, the application need check if the video encoder is capable of supporting the high frame rate for a given video size, or it will end up with lower recording frame rate. If the destination surface is from preview window, the actual preview frame rate will be bounded by the screen refresh rate. The camera device will only support up to 2 high speed simultaneous output surfaces (preview and recording surfaces) in this mode. Above controls will be effective only if all of below conditions are true: The application creates a camera capture session with no more than 2 surfaces via android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession. The targeted surfaces must be preview surface (either from android.view.SurfaceView or android.graphics.SurfaceTexture) or recording surface(either from android.media.MediaRecorder#getSurface or android.media.MediaCodec#createInputSurface). The stream sizes are selected from the sizes reported by android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoSizes. The FPS ranges are selected from android.hardware.camera2.params.StreamConfigurationMap#getHighSpeedVideoFpsRanges. When above conditions are NOT satisfied, android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession will fail. Switching to a FPS range that has different maximum FPS may trigger some camera device reconfigurations, which may introduce extra latency. It is recommended that the application avoids unnecessary maximum target FPS changes as much as possible during high speed streaming. Int REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT The camera device can produce depth measurements from its field of view. This capability requires the camera device to support the following: android.graphics.ImageFormat#DEPTH16 is supported as an output format. android.graphics.ImageFormat#DEPTH_POINT_CLOUD is optionally supported as an output format. This camera device, and all camera devices with the same android.lens.facing, will list the following calibration metadata entries in both android.hardware.camera2.CameraCharacteristics and android.hardware.camera2.CaptureResult: android.lens.poseTranslation android.lens.poseRotation android.lens.intrinsicCalibration android.lens.distortion The android.depth.depthIsExclusive entry is listed by this device. As of Android P, the android.lens.poseReference entry is listed by this device. A LIMITED camera with only the DEPTH_OUTPUT capability does not have to support normal YUV_420_888, Y8, JPEG, and PRIV-format outputs. It only has to support the DEPTH16 format. Generally, depth output operates at a slower frame rate than standard color capture, so the DEPTH16 and DEPTH_POINT_CLOUD formats will commonly have a stall duration that should be accounted for (see android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration). On a device that supports both depth and color-based output, to enable smooth preview, using a repeating burst is recommended, where a depth-output target is only included once every N frames, where N is the ratio between preview output rate and depth output rate, including depth stall time. Int REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT The device supports one or more 10-bit camera outputs according to the dynamic range profiles specified in android.hardware.camera2.params.DynamicRangeProfiles#getSupportedProfiles. They can be configured as part of the capture session initialization via android.hardware.camera2.params.OutputConfiguration#setDynamicRangeProfile. Cameras that enable this capability must also support the following: Profile android.hardware.camera2.params.DynamicRangeProfiles#HLG10 All mandatory stream combinations for this specific capability as per documentation In case the device is not able to capture some combination of supported standard 8-bit and/or 10-bit dynamic range profiles within the same capture request, then those constraints must be listed in android.hardware.camera2.params.DynamicRangeProfiles#getProfileCaptureRequestConstraints Recommended dynamic range profile listed in android.hardware.camera2.CameraCharacteristics#REQUEST_RECOMMENDED_TEN_BIT_DYNAMIC_RANGE_PROFILE. Int REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA The camera device is a logical camera backed by two or more physical cameras. In API level 28, the physical cameras must also be exposed to the application via android.hardware.camera2.CameraManager#getCameraIdList. Starting from API level 29: Some or all physical cameras may not be independently exposed to the application, in which case the physical camera IDs will not be available in android.hardware.camera2.CameraManager#getCameraIdList. But the application can still query the physical cameras' characteristics by calling android.hardware.camera2.CameraManager#getCameraCharacteristics. If a physical camera is hidden from camera ID list, the mandatory stream combinations for that physical camera must be supported through the logical camera using physical streams. One exception is that in API level 30, a physical camera may become unavailable via CameraManager.AvailabilityCallback.onPhysicalCameraUnavailable callback. Combinations of logical and physical streams, or physical streams from different physical cameras are not guaranteed. However, if the camera device supports CameraDevice.isSessionConfigurationSupported, application must be able to query whether a stream combination involving physical streams is supported by calling CameraDevice.isSessionConfigurationSupported. Camera application shouldn't assume that there are at most 1 rear camera and 1 front camera in the system. For an application that switches between front and back cameras, the recommendation is to switch between the first rear camera and the first front camera in the list of supported camera devices. This capability requires the camera device to support the following: The IDs of underlying physical cameras are returned via android.hardware.camera2.CameraCharacteristics#getPhysicalCameraIds. This camera device must list static metadata android.logicalMultiCamera.sensorSyncType in android.hardware.camera2.CameraCharacteristics. The underlying physical cameras' static metadata must list the following entries, so that the application can correlate pixels from the physical streams: android.lens.poseReference android.lens.poseRotation android.lens.poseTranslation android.lens.intrinsicCalibration android.lens.distortion The SENSOR_INFO_TIMESTAMP_SOURCE of the logical device and physical devices must be the same. The logical camera must be LIMITED or higher device. A logical camera device's dynamic metadata may contain android.logicalMultiCamera.activePhysicalId to notify the application of the current active physical camera Id. An active physical camera is the physical camera from which the logical camera's main image data outputs (YUV or RAW) and metadata come from. In addition, this serves as an indication which physical camera is used to output to a RAW stream, or in case only physical cameras support RAW, which physical RAW stream the application should request. Logical camera's static metadata tags below describe the default active physical camera. An active physical camera is default if it's used when application directly uses requests built from a template. All templates will default to the same active physical camera. android.sensor.info.sensitivityRange android.sensor.info.colorFilterArrangement android.sensor.info.exposureTimeRange android.sensor.info.maxFrameDuration android.sensor.info.physicalSize android.sensor.info.whiteLevel android.sensor.info.lensShadingApplied android.sensor.referenceIlluminant1 android.sensor.referenceIlluminant2 android.sensor.calibrationTransform1 android.sensor.calibrationTransform2 android.sensor.colorTransform1 android.sensor.colorTransform2 android.sensor.forwardMatrix1 android.sensor.forwardMatrix2 android.sensor.blackLevelPattern android.sensor.maxAnalogSensitivity android.sensor.opticalBlackRegions android.sensor.availableTestPatternModes android.lens.info.hyperfocalDistance android.lens.info.minimumFocusDistance android.lens.info.focusDistanceCalibration android.lens.poseRotation android.lens.poseTranslation android.lens.intrinsicCalibration android.lens.poseReference android.lens.distortion The field of view of non-RAW physical streams must not be smaller than that of the non-RAW logical streams, or the maximum field-of-view of the physical camera, whichever is smaller. The application should check the physical capture result metadata for how the physical streams are cropped or zoomed. More specifically, given the physical camera result metadata, the effective horizontal field-of-view of the physical camera is: <code>fov = 2 * atan2(cropW * sensorW / (2 * zoomRatio * activeArrayW), focalLength) </code> where the equation parameters are the physical camera's crop region width, physical sensor width, zoom ratio, active array width, and focal length respectively. Typically the physical stream of active physical camera has the same field-of-view as the logical streams. However, the same may not be true for physical streams from non-active physical cameras. For example, if the logical camera has a wide-ultrawide configuration where the wide lens is the default, when the crop region is set to the logical camera's active array size, (and the zoom ratio set to 1.0 starting from Android 11), a physical stream for the ultrawide camera may prefer outputting images with larger field-of-view than that of the wide camera for better stereo matching margin or more robust motion tracking. At the same time, the physical non-RAW streams' field of view must not be smaller than the requested crop region and zoom ratio, as long as it's within the physical lens' capability. For example, for a logical camera with wide-tele lens configuration where the wide lens is the default, if the logical camera's crop region is set to maximum size, and zoom ratio set to 1.0, the physical stream for the tele lens will be configured to its maximum size crop region (no zoom). Deprecated: Prior to Android 11, the field of view of all non-RAW physical streams cannot be larger than that of non-RAW logical streams. If the logical camera has a wide-ultrawide lens configuration where the wide lens is the default, when the logical camera's crop region is set to maximum size, the FOV of the physical streams for the ultrawide lens will be the same as the logical stream, by making the crop region smaller than its active array size to compensate for the smaller focal length. For a logical camera, typically the underlying physical cameras have different RAW capabilities (such as resolution or CFA pattern). There are two ways for the application to capture RAW images from the logical camera: If the logical camera has RAW capability, the application can create and use RAW streams in the same way as before. In case a RAW stream is configured, to maintain backward compatibility, the camera device makes sure the default active physical camera remains active and does not switch to other physical cameras. (One exception is that, if the logical camera consists of identical image sensors and advertises multiple focalLength due to different lenses, the camera device may generate RAW images from different physical cameras based on the focalLength being set by the application.) This backward-compatible approach usually results in loss of optical zoom, to telephoto lens or to ultrawide lens. Alternatively, if supported by the device, android.hardware.camera2.MultiResolutionImageReader can be used to capture RAW images from one of the underlying physical cameras ( depending on current zoom level). Because different physical cameras may have different RAW characteristics, the application needs to use the characteristics and result metadata of the active physical camera for the relevant RAW metadata. The capture request and result metadata tags required for backward compatible camera functionalities will be solely based on the logical camera capability. On the other hand, the use of manual capture controls (sensor or post-processing) with a logical camera may result in unexpected behavior when the HAL decides to switch between physical cameras with different characteristics under the hood. For example, when the application manually sets exposure time and sensitivity while zooming in, the brightness of the camera images may suddenly change because HAL switches from one physical camera to the other. Int REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING The camera device post-processing stages can be manually controlled. The camera device supports basic manual control of the image post-processing stages. This means the following controls are guaranteed to be supported: Manual tonemap control android.tonemap.curve android.tonemap.mode android.tonemap.maxCurvePoints android.tonemap.gamma android.tonemap.presetCurve Manual white balance control android.colorCorrection.transform android.colorCorrection.gains Manual lens shading map control android.shading.mode android.statistics.lensShadingMapMode android.statistics.lensShadingMap android.lens.info.shadingMapSize Manual aberration correction control (if aberration correction is supported) android.colorCorrection.aberrationMode android.colorCorrection.availableAberrationModes Auto white balance lock android.control.awbLock If auto white balance is enabled, then the camera device will accurately report the values applied by AWB in the result. A given camera device may also support additional post-processing controls, but this capability only covers the above list of controls. For camera devices with LOGICAL_MULTI_CAMERA capability, when underlying active physical camera switches, tonemap, white balance, and shading map may change even if awb is locked. However, the overall post-processing experience for users will be consistent. Refer to LOGICAL_MULTI_CAMERA capability for details. Int REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR The camera device can be manually controlled (3A algorithms such as auto-exposure, and auto-focus can be bypassed). The camera device supports basic manual control of the sensor image acquisition related stages. This means the following controls are guaranteed to be supported: Manual frame duration control android.sensor.frameDuration android.sensor.info.maxFrameDuration Manual exposure control android.sensor.exposureTime android.sensor.info.exposureTimeRange Manual sensitivity control android.sensor.sensitivity android.sensor.info.sensitivityRange Manual lens control (if the lens is adjustable) android.lens.* Manual flash control (if a flash unit is present) android.flash.* Manual black level locking android.blackLevel.lock Auto exposure lock android.control.aeLock If any of the above 3A algorithms are enabled, then the camera device will accurately report the values applied by 3A in the result. A given camera device may also support additional manual sensor controls, but this capability only covers the above list of controls. If this is supported, android.scaler.streamConfigurationMap will additionally return a min frame duration that is greater than zero for each supported size-format combination. For camera devices with LOGICAL_MULTI_CAMERA capability, when the underlying active physical camera switches, exposureTime, sensitivity, and lens properties may change even if AE/AF is locked. However, the overall auto exposure and auto focus experience for users will be consistent. Refer to LOGICAL_MULTI_CAMERA capability for details. Int REQUEST_AVAILABLE_CAPABILITIES_MONOCHROME The camera device is a monochrome camera that doesn't contain a color filter array, and for YUV_420_888 stream, the pixel values on U and V planes are all 128. A MONOCHROME camera must support the guaranteed stream combinations required for its device level and capabilities. Additionally, if the monochrome camera device supports Y8 format, all mandatory stream combination requirements related to YUV_420_888 apply to Y8 as well. There are no mandatory stream combination requirements with regard to Y8 for Bayer camera devices. Starting from Android Q, the SENSOR_INFO_COLOR_FILTER_ARRANGEMENT of a MONOCHROME camera will be either MONO or NIR. Int REQUEST_AVAILABLE_CAPABILITIES_MOTION_TRACKING The camera device supports the MOTION_TRACKING value for android.control.captureIntent, which limits maximum exposure time to 20 ms. This limits the motion blur of capture images, resulting in better image tracking results for use cases such as image stabilization or augmented reality. Int REQUEST_AVAILABLE_CAPABILITIES_OFFLINE_PROCESSING The camera device supports the OFFLINE_PROCESSING use case. With OFFLINE_PROCESSING capability, the application can switch an ongoing capture session to offline mode by calling the CameraCaptureSession#switchToOffline method and specify streams to be kept in offline mode. The camera will then stop currently active repeating requests, prepare for some requests to go into offline mode, and return an offline session object. After the switchToOffline call returns, the original capture session is in closed state as if the CameraCaptureSession#close method has been called. In the offline mode, all inflight requests will continue to be processed in the background, and the application can immediately close the camera or create a new capture session without losing those requests' output images and capture results. While the camera device is processing offline requests, it might not be able to support all stream configurations it can support without offline requests. When that happens, the createCaptureSession method call will fail. The following stream configurations are guaranteed to work without hitting the resource busy exception: One ongoing offline session: target one output surface of YUV or JPEG format, any resolution. The active camera capture session: One preview surface (SurfaceView or SurfaceTexture) up to 1920 width One YUV ImageReader surface up to 1920 width One Jpeg ImageReader, any resolution: the camera device is allowed to slow down JPEG output speed by 50% if there is any ongoing offline session. If the device supports PRIVATE_REPROCESSING, one pair of ImageWriter/ImageReader surfaces of private format, with the same resolution that is larger or equal to the JPEG ImageReader resolution above. Alternatively, the active camera session above can be replaced by an legacy Camera with the following parameter settings: Preview size up to 1920 width Preview callback size up to 1920 width Video size up to 1920 width Picture size, any resolution: the camera device is allowed to slow down JPEG output speed by 50% if there is any ongoing offline session. Int REQUEST_AVAILABLE_CAPABILITIES_PRIVATE_REPROCESSING The camera device supports the Zero Shutter Lag reprocessing use case. One input stream is supported, that is, android.request.maxNumInputStreams == 1. android.graphics.ImageFormat#PRIVATE is supported as an output/input format, that is, android.graphics.ImageFormat#PRIVATE is included in the lists of formats returned by android.hardware.camera2.params.StreamConfigurationMap#getInputFormats and android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats. android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput returns non-empty int[] for each supported input format returned by android.hardware.camera2.params.StreamConfigurationMap#getInputFormats. Each size returned by getInputSizes(ImageFormat.PRIVATE) is also included in android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes Using android.graphics.ImageFormat#PRIVATE does not cause a frame rate drop relative to the sensor's maximum capture rate (at that resolution). android.graphics.ImageFormat#PRIVATE will be reprocessable into both android.graphics.ImageFormat#YUV_420_888 and android.graphics.ImageFormat#JPEG formats. For a MONOCHROME camera supporting Y8 format, android.graphics.ImageFormat#PRIVATE will be reprocessable into android.graphics.ImageFormat#Y8. The maximum available resolution for PRIVATE streams (both input/output) will match the maximum available resolution of JPEG streams. Static metadata android.reprocess.maxCaptureStall. Only below controls are effective for reprocessing requests and will be present in capture results, other controls in reprocess requests will be ignored by the camera device. android.jpeg.* android.noiseReduction.mode android.edge.mode android.noiseReduction.availableNoiseReductionModes and android.edge.availableEdgeModes will both list ZERO_SHUTTER_LAG as a supported mode. Int REQUEST_AVAILABLE_CAPABILITIES_RAW The camera device supports outputting RAW buffers and metadata for interpreting them. Devices supporting the RAW capability allow both for saving DNG files, and for direct application processing of raw sensor images. RAW_SENSOR is supported as an output format. The maximum available resolution for RAW_SENSOR streams will match either the value in android.sensor.info.pixelArraySize or android.sensor.info.preCorrectionActiveArraySize. All DNG-related optional metadata entries are provided by the camera device. Int REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS The camera device supports accurately reporting the sensor settings for many of the sensor controls while the built-in 3A algorithm is running. This allows reporting of sensor settings even when these settings cannot be manually changed. The values reported for the following controls are guaranteed to be available in the CaptureResult, including when 3A is enabled: Exposure control android.sensor.exposureTime Sensitivity control android.sensor.sensitivity Lens controls (if the lens is adjustable) android.lens.focusDistance android.lens.aperture This capability is a subset of the MANUAL_SENSOR control capability, and will always be included if the MANUAL_SENSOR capability is available. Int REQUEST_AVAILABLE_CAPABILITIES_REMOSAIC_REPROCESSING The device supports reprocessing from the RAW_SENSOR format with a bayer pattern given by android.sensor.info.binningFactor (m x n group of pixels with the same color filter) to a remosaiced regular bayer pattern. This capability will only be present for devices with android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR capability. When android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR devices do not advertise this capability, android.graphics.ImageFormat#RAW_SENSOR images will already have a regular bayer pattern. If a RAW_SENSOR stream is requested along with another non-RAW stream in a android.hardware.camera2.CaptureRequest (if multiple streams are supported when android.sensor.pixelMode is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION), the RAW_SENSOR stream will have a regular bayer pattern. This capability requires the camera device to support the following : The android.hardware.camera2.params.StreamConfigurationMap mentioned below refers to the one, described by android.scaler.streamConfigurationMapMaximumResolution. One input stream is supported, that is, android.request.maxNumInputStreams == 1. android.graphics.ImageFormat#RAW_SENSOR is supported as an output/input format, that is, android.graphics.ImageFormat#RAW_SENSOR is included in the lists of formats returned by android.hardware.camera2.params.StreamConfigurationMap#getInputFormats and android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats. android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput returns non-empty int[] for each supported input format returned by android.hardware.camera2.params.StreamConfigurationMap#getInputFormats. Each size returned by getInputSizes(ImageFormat.RAW_SENSOR) is also included in android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes Using android.graphics.ImageFormat#RAW_SENSOR does not cause a frame rate drop relative to the sensor's maximum capture rate (at that resolution). No CaptureRequest controls will be applicable when a request has an input target with android.graphics.ImageFormat#RAW_SENSOR format. Int REQUEST_AVAILABLE_CAPABILITIES_SECURE_IMAGE_DATA The camera device is capable of writing image data into a region of memory inaccessible to Android userspace or the Android kernel, and only accessible to trusted execution environments (TEE). Int REQUEST_AVAILABLE_CAPABILITIES_STREAM_USE_CASE The camera device supports selecting a per-stream use case via android.hardware.camera2.params.OutputConfiguration#setStreamUseCase so that the device can optimize camera pipeline parameters such as tuning, sensor mode, or ISP settings for a specific user scenario. Some sample usages of this capability are: Distinguish high quality YUV captures from a regular YUV stream where the image quality may not be as good as the JPEG stream, or Use one stream to serve multiple purposes: viewfinder, video recording and still capture. This is common with applications that wish to apply edits equally to preview, saved images, and saved videos. This capability requires the camera device to support the following stream use cases: DEFAULT for backward compatibility where the application doesn't set a stream use case PREVIEW for live viewfinder and in-app image analysis STILL_CAPTURE for still photo capture VIDEO_RECORD for recording video clips PREVIEW_VIDEO_STILL for one single stream used for viewfinder, video recording, and still capture. VIDEO_CALL for long running video calls android.hardware.camera2.CameraCharacteristics#SCALER_AVAILABLE_STREAM_USE_CASES lists all of the supported stream use cases. Refer to the guideline for the mandatory stream combinations involving stream use cases, which can also be queried via android.hardware.camera2.params.MandatoryStreamCombination. Int REQUEST_AVAILABLE_CAPABILITIES_SYSTEM_CAMERA The camera device is only accessible by Android's system components and privileged applications. Processes need to have the android.permission.SYSTEM_CAMERA in addition to android.permission.CAMERA in order to connect to this camera device. Int REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR This camera device is capable of producing ultra high resolution images in addition to the image sizes described in the android.scaler.streamConfigurationMap. It can operate in 'default' mode and 'max resolution' mode. It generally does this by binning pixels in 'default' mode and not binning them in 'max resolution' mode. android.scaler.streamConfigurationMap describes the streams supported in 'default' mode. The stream configurations supported in 'max resolution' mode are described by android.scaler.streamConfigurationMapMaximumResolution. The maximum resolution mode pixel array size of a camera device (android.sensor.info.pixelArraySize) with this capability, will be at least 24 megapixels. Int REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING The camera device supports the YUV_420_888 reprocessing use case, similar as PRIVATE_REPROCESSING, This capability requires the camera device to support the following: One input stream is supported, that is, android.request.maxNumInputStreams == 1. android.graphics.ImageFormat#YUV_420_888 is supported as an output/input format, that is, YUV_420_888 is included in the lists of formats returned by android.hardware.camera2.params.StreamConfigurationMap#getInputFormats and android.hardware.camera2.params.StreamConfigurationMap#getOutputFormats. android.hardware.camera2.params.StreamConfigurationMap#getValidOutputFormatsForInput returns non-empty int[] for each supported input format returned by android.hardware.camera2.params.StreamConfigurationMap#getInputFormats. Each size returned by getInputSizes(YUV_420_888) is also included in android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes Using android.graphics.ImageFormat#YUV_420_888 does not cause a frame rate drop relative to the sensor's maximum capture rate (at that resolution). android.graphics.ImageFormat#YUV_420_888 will be reprocessable into both android.graphics.ImageFormat#YUV_420_888 and android.graphics.ImageFormat#JPEG formats. The maximum available resolution for android.graphics.ImageFormat#YUV_420_888 streams (both input/output) will match the maximum available resolution of android.graphics.ImageFormat#JPEG streams. For a MONOCHROME camera with Y8 format support, all the requirements mentioned above for YUV_420_888 apply for Y8 format as well. Static metadata android.reprocess.maxCaptureStall. Only the below controls are effective for reprocessing requests and will be present in capture results. The reprocess requests are from the original capture results that are associated with the intermediate android.graphics.ImageFormat#YUV_420_888 output buffers. All other controls in the reprocess requests will be ignored by the camera device. android.jpeg.* android.noiseReduction.mode android.edge.mode android.reprocess.effectiveExposureFactor android.noiseReduction.availableNoiseReductionModes and android.edge.availableEdgeModes will both list ZERO_SHUTTER_LAG as a supported mode. Int SCALER_AVAILABLE_STREAM_USE_CASES_CROPPED_RAW Cropped RAW stream when the client chooses to crop the field of view. Certain types of image sensors can run in binned modes in order to improve signal to noise ratio while capturing frames. However, at certain zoom levels and / or when other scene conditions are deemed fit, the camera sub-system may choose to un-bin and remosaic the sensor's output. This results in a RAW frame which is cropped in field of view and yet has the same number of pixels as full field of view RAW, thereby improving image detail. The resultant field of view of the RAW stream will be greater than or equal to croppable non-RAW streams. The effective crop region for this RAW stream will be reflected in the CaptureResult key android.scaler.rawCropRegion. If this stream use case is set on a non-RAW stream, i.e. not one of : RAW_SENSOR RAW10 RAW12 session configuration is not guaranteed to succeed. This stream use case may not be supported on some devices. Int SCALER_AVAILABLE_STREAM_USE_CASES_DEFAULT Default stream use case. This use case is the same as when the application doesn't set any use case for the stream. The camera device uses the properties of the output target, such as format, dataSpace, or surface class type, to optimize the image processing pipeline. Int SCALER_AVAILABLE_STREAM_USE_CASES_PREVIEW Live stream shown to the user. Optimized for performance and usability as a viewfinder, but not necessarily for image quality. The output is not meant to be persisted as saved images or video. No stall if android.control.* are set to FAST. There may be stall if they are set to HIGH_QUALITY. This use case has the same behavior as the default SurfaceView and SurfaceTexture targets. Additionally, this use case can be used for in-app image analysis. Int SCALER_AVAILABLE_STREAM_USE_CASES_PREVIEW_VIDEO_STILL One single stream used for combined purposes of preview, video, and still capture. For such multi-purpose streams, the camera device aims to make the best tradeoff between the individual use cases. For example, the STILL_CAPTURE use case by itself may have stalls for achieving best image quality. But if combined with PREVIEW and VIDEO_RECORD, the camera device needs to trade off the additional image processing for speed so that preview and video recording aren't slowed down. Similarly, VIDEO_RECORD may produce frames with a substantial lag, but PREVIEW_VIDEO_STILL must have minimal output delay. This means that to enable video stabilization with this use case, the device must support and the app must select the PREVIEW_STABILIZATION mode for video stabilization. Int SCALER_AVAILABLE_STREAM_USE_CASES_STILL_CAPTURE Still photo capture. Optimized for high-quality high-resolution capture, and not expected to maintain preview-like frame rates. The stream may have stalls regardless of whether android.control.* is HIGH_QUALITY. This use case has the same behavior as the default JPEG and RAW related formats. Int SCALER_AVAILABLE_STREAM_USE_CASES_VIDEO_CALL Long-running video call optimized for both power efficiency and video quality. The camera sensor may run in a lower-resolution mode to reduce power consumption at the cost of some image and digital zoom quality. Unlike VIDEO_RECORD, VIDEO_CALL outputs are expected to work in dark conditions, so are usually accompanied with variable frame rate settings to allow sufficient exposure time in low light. Int SCALER_AVAILABLE_STREAM_USE_CASES_VIDEO_RECORD Recording video clips. Optimized for high-quality video capture, including high-quality image stabilization if supported by the device and enabled by the application. As a result, may produce output frames with a substantial lag from real time, to allow for highest-quality stabilization or other processing. As such, such an output is not suitable for drawing to screen directly, and is expected to be persisted to disk or similar for later playback or processing. Only streams that set the VIDEO_RECORD use case are guaranteed to have video stabilization applied when the video stabilization control is set to ON, as opposed to PREVIEW_STABILIZATION. This use case has the same behavior as the default MediaRecorder and MediaCodec targets. Int SCALER_CROPPING_TYPE_CENTER_ONLY The camera device only supports centered crop regions. Int SCALER_CROPPING_TYPE_FREEFORM The camera device supports arbitrarily chosen crop regions. Int SCALER_ROTATE_AND_CROP_180 Processed images are rotated by 180 degrees. Since the aspect ratio does not change, no cropping is performed. Int SCALER_ROTATE_AND_CROP_270 Processed images are rotated by 270 degrees clockwise, and then cropped to the original aspect ratio. Int SCALER_ROTATE_AND_CROP_90 Processed images are rotated by 90 degrees clockwise, and then cropped to the original aspect ratio. Int SCALER_ROTATE_AND_CROP_AUTO The camera API automatically selects the best concrete value for rotate-and-crop based on the application's support for resizability and the current multi-window mode. If the application does not support resizing but the display mode for its main Activity is not in a typical orientation, the camera API will set ROTATE_AND_CROP_90 or some other supported rotation value, depending on device configuration, to ensure preview and captured images are correctly shown to the user. Otherwise, ROTATE_AND_CROP_NONE will be selected. When a value other than NONE is selected, several metadata fields will also be parsed differently to ensure that coordinates are correctly handled for features like drawing face detection boxes or passing in tap-to-focus coordinates. The camera API will convert positions in the active array coordinate system to/from the cropped-and-rotated coordinate system to make the operation transparent for applications. No coordinate mapping will be done when the application selects a non-AUTO mode. Int SCALER_ROTATE_AND_CROP_NONE No rotate and crop is applied. Processed outputs are in the sensor orientation. Int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR Int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG Int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG Int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_MONO Sensor doesn't have any Bayer color filter. Such sensor captures visible light in monochrome. The exact weighting and wavelengths captured is not specified, but generally only includes the visible frequencies. This value implies a MONOCHROME camera. Int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_NIR Sensor has a near infrared filter capturing light with wavelength between roughly 750nm and 1400nm, and the same filter covers the whole sensor array. This value implies a MONOCHROME camera. Int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB Sensor is not Bayer; output has 3 16-bit values for each pixel, instead of just 1 16-bit value per pixel. Int SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB Int SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME Timestamps from android.sensor.timestamp are in the same timebase as android.os.SystemClock#elapsedRealtimeNanos, and they can be compared to other timestamps using that base. When buffers from a REALTIME device are passed directly to a video encoder from the camera, automatic compensation is done to account for differing timebases of the audio and camera subsystems. If the application is receiving buffers and then later sending them to a video encoder or other application where they are compared with audio subsystem timestamps or similar, this compensation is not present. In those cases, applications need to adjust the timestamps themselves. Since android.os.SystemClock#elapsedRealtimeNanos and android.os.SystemClock#uptimeMillis only diverge while the device is asleep, an offset between the two sources can be measured once per active session and applied to timestamps for sufficient accuracy for A/V sync. Int SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN Timestamps from android.sensor.timestamp are in nanoseconds and monotonic, but can not be compared to timestamps from other subsystems (e.g. accelerometer, gyro etc.), or other instances of the same or different camera devices in the same system with accuracy. However, the timestamps are roughly in the same timebase as android.os.SystemClock#uptimeMillis. The accuracy is sufficient for tasks like A/V synchronization for video recording, at least, and the timestamps can be directly used together with timestamps from the audio subsystem for that task. Timestamps between streams and results for a single camera instance are comparable, and the timestamps for all buffers and the result metadata generated by a single capture are identical. Int SENSOR_PIXEL_MODE_DEFAULT This is the default sensor pixel mode. Int SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION In this mode, sensors typically do not bin pixels, as a result can offer larger image sizes. Int SENSOR_READOUT_TIMESTAMP_HARDWARE This camera device supports the onReadoutStarted callback as well as outputting readout timestamps. The readout timestamp is generated by the camera hardware and it has the same accuracy and timing characteristics of the start-of-exposure time. Int SENSOR_READOUT_TIMESTAMP_NOT_SUPPORTED This camera device doesn't support readout timestamp and onReadoutStarted callback. Int SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER Int SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT W 3900 - 4500K Int SENSOR_REFERENCE_ILLUMINANT1_D50 Int SENSOR_REFERENCE_ILLUMINANT1_D55 Int SENSOR_REFERENCE_ILLUMINANT1_D65 Int SENSOR_REFERENCE_ILLUMINANT1_D75 Int SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT Int SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT D 5700 - 7100K Int SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT N 4600 - 5400K Int SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER Int SENSOR_REFERENCE_ILLUMINANT1_FLASH Int SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT Int SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN Int SENSOR_REFERENCE_ILLUMINANT1_SHADE Int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A Int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B Int SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C Int SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN Incandescent light Int SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT WW 3200 - 3700K Int SENSOR_TEST_PATTERN_MODE_COLOR_BARS All pixel data is replaced with an 8-bar color pattern. The vertical bars (left-to-right) are as follows: 100% white yellow cyan green magenta red blue black In general the image would look like the following: <code>W Y C G M R B K W Y C G M R B K W Y C G M R B K W Y C G M R B K W Y C G M R B K . . . . . . . . . . . . . . . . . . . . . . . . (B = Blue, K = Black) </code> Each bar should take up 1/8 of the sensor pixel array width. When this is not possible, the bar size should be rounded down to the nearest integer and the pattern can repeat on the right side. Each bar's height must always take up the full sensor pixel array height. Each pixel in this test pattern must be set to either 0% intensity or 100% intensity. Int SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY The test pattern is similar to COLOR_BARS, except that each bar should start at its specified color at the top, and fade to gray at the bottom. Furthermore each bar is further subdivided into a left and right half. The left half should have a smooth gradient, and the right half should have a quantized gradient. In particular, the right half's should consist of blocks of the same color for 1/16th active sensor pixel array width. The least significant bits in the quantized gradient should be copied from the most significant bits of the smooth gradient. The height of each bar should always be a multiple of 128. When this is not the case, the pattern should repeat at the bottom of the image. Int SENSOR_TEST_PATTERN_MODE_CUSTOM1 The first custom test pattern. All custom patterns that are available only on this camera device are at least this numeric value. All of the custom test patterns will be static (that is the raw image must not vary from frame to frame). Int SENSOR_TEST_PATTERN_MODE_OFF No test pattern mode is used, and the camera device returns captures from the image sensor. This is the default if the key is not set. Int SENSOR_TEST_PATTERN_MODE_PN9 All pixel data is replaced by a pseudo-random sequence generated from a PN9 512-bit sequence (typically implemented in hardware with a linear feedback shift register). The generator should be reset at the beginning of each frame, and thus each subsequent raw frame with this test pattern should be exactly the same as the last. Int SENSOR_TEST_PATTERN_MODE_SOLID_COLOR Each pixel in [R, G_even, G_odd, B] is replaced by its respective color channel provided in android.sensor.testPatternData. For example: <code><code><a docref="android.hardware.camera2.CaptureRequest$SENSOR_TEST_PATTERN_DATA">android.sensor.testPatternData</a></code> = [0, 0xFFFFFFFF, 0xFFFFFFFF, 0] </code> All green pixels are 100% green. All red/blue pixels are black. <code><code><a docref="android.hardware.camera2.CaptureRequest$SENSOR_TEST_PATTERN_DATA">android.sensor.testPatternData</a></code> = [0xFFFFFFFF, 0, 0xFFFFFFFF, 0] </code> All red pixels are 100% red. Only the odd green pixels are 100% green. All blue pixels are 100% black. Int SHADING_MODE_FAST Apply lens shading corrections, without slowing frame rate relative to sensor raw output Int SHADING_MODE_HIGH_QUALITY Apply high-quality lens shading correction, at the cost of possibly reduced frame rate. Int SHADING_MODE_OFF No lens shading correction is applied. Int STATISTICS_FACE_DETECT_MODE_FULL Return all face metadata. In this mode, face rectangles, scores, landmarks, and face IDs are all valid. Int STATISTICS_FACE_DETECT_MODE_OFF Do not include face detection statistics in capture results. Int STATISTICS_FACE_DETECT_MODE_SIMPLE Return face rectangle and confidence values only. Int STATISTICS_LENS_SHADING_MAP_MODE_OFF Do not include a lens shading map in the capture result. Int STATISTICS_LENS_SHADING_MAP_MODE_ON Include a lens shading map in the capture result. Int STATISTICS_OIS_DATA_MODE_OFF Do not include OIS data in the capture result. Int STATISTICS_OIS_DATA_MODE_ON Include OIS data in the capture result. android.statistics.oisSamples provides OIS sample data in the output result metadata. Int STATISTICS_SCENE_FLICKER_50HZ The camera device detects illumination flickering at 50Hz in the current scene. Int STATISTICS_SCENE_FLICKER_60HZ The camera device detects illumination flickering at 60Hz in the current scene. Int STATISTICS_SCENE_FLICKER_NONE The camera device does not detect any flickering illumination in the current scene. Int SYNC_MAX_LATENCY_PER_FRAME_CONTROL Every frame has the requests immediately applied. Changing controls over multiple requests one after another will produce results that have those controls applied atomically each frame. All FULL capability devices will have this as their maxLatency. Int SYNC_MAX_LATENCY_UNKNOWN Each new frame has some subset (potentially the entire set) of the past requests applied to the camera settings. By submitting a series of identical requests, the camera device will eventually have the camera settings applied, but it is unknown when that exact point will be. All LEGACY capability devices will have this as their maxLatency. Int TONEMAP_MODE_CONTRAST_CURVE Use the tone mapping curve specified in the android.tonemap.curve* entries. All color enhancement and tonemapping must be disabled, except for applying the tonemapping curve specified by android.tonemap.curve. Must not slow down frame rate relative to raw sensor output. Int TONEMAP_MODE_FAST Advanced gamma mapping and color enhancement may be applied, without reducing frame rate compared to raw sensor output. Int TONEMAP_MODE_GAMMA_VALUE Use the gamma value specified in android.tonemap.gamma to perform tonemapping. All color enhancement and tonemapping must be disabled, except for applying the tonemapping curve specified by android.tonemap.gamma. Must not slow down frame rate relative to raw sensor output. Int TONEMAP_MODE_HIGH_QUALITY High-quality gamma mapping and color enhancement will be applied, at the cost of possibly reduced frame rate compared to raw sensor output. Int TONEMAP_MODE_PRESET_CURVE Use the preset tonemapping curve specified in android.tonemap.presetCurve to perform tonemapping. All color enhancement and tonemapping must be disabled, except for applying the tonemapping curve specified by android.tonemap.presetCurve. Must not slow down frame rate relative to raw sensor output. Int TONEMAP_PRESET_CURVE_REC709 Tonemapping curve is defined by ITU-R BT.709 Int TONEMAP_PRESET_CURVE_SRGB Tonemapping curve is defined by sRGB

Public methods
T?	get(key: CameraCharacteristics.Key<T>!) Get a camera characteristics field value.
MutableList<CaptureRequest.Key<*>!>	getAvailableCaptureRequestKeys() Returns the list of keys supported by this CameraDevice for querying with a CaptureRequest.
MutableList<CaptureResult.Key<*>!>	getAvailableCaptureResultKeys() Returns the list of keys supported by this CameraDevice for querying with a CaptureResult.
MutableList<CaptureRequest.Key<*>!>!	getAvailablePhysicalCameraRequestKeys() Returns a subset of getAvailableCaptureRequestKeys keys that can be overridden for physical devices backing a logical multi-camera.
MutableList<CameraCharacteristics.Key<*>!>	getAvailableSessionCharacteristicsKeys() Get the keys in Camera Characteristics whose values are capture session specific.
MutableList<CaptureRequest.Key<*>!>!	getAvailableSessionKeys() Returns a subset of getAvailableCaptureRequestKeys keys that the camera device can pass as part of the capture session initialization.
MutableList<CameraCharacteristics.Key<*>!>	getKeys() Returns a list of the keys contained in this map.
MutableList<CameraCharacteristics.Key<*>!>	getKeysNeedingPermission() Returns a subset of the list returned by getKeys with all keys that require camera clients to obtain the android.Manifest.permission#CAMERA permission.
MutableSet<String!>	getPhysicalCameraIds() Returns the set of physical camera ids that this logical CameraDevice is made up of.
RecommendedStreamConfigurationMap?	getRecommendedStreamConfigurationMap(usecase: Int) Retrieve camera device recommended stream configuration map RecommendedStreamConfigurationMap for a given use case.

Properties
static CameraCharacteristics.Key<IntArray!>	AUTOMOTIVE_LENS_FACING The direction of the camera faces relative to the vehicle body frame and the passenger seats.
static CameraCharacteristics.Key<Int!>	AUTOMOTIVE_LOCATION Location of the cameras on the automotive devices.
static CameraCharacteristics.Key<IntArray!>	COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES List of aberration correction modes for android.colorCorrection.aberrationMode that are supported by this camera device.
static CameraCharacteristics.Key<IntArray!>	CONTROL_AE_AVAILABLE_ANTIBANDING_MODES List of auto-exposure antibanding modes for android.control.aeAntibandingMode that are supported by this camera device.
static CameraCharacteristics.Key<IntArray!>	CONTROL_AE_AVAILABLE_MODES List of auto-exposure modes for android.control.aeMode that are supported by this camera device.
static CameraCharacteristics.Key<Array<Range<Int!>!>!>	CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES List of frame rate ranges for android.control.aeTargetFpsRange supported by this camera device.
static CameraCharacteristics.Key<Range<Int!>!>	CONTROL_AE_COMPENSATION_RANGE Maximum and minimum exposure compensation values for android.control.aeExposureCompensation, in counts of android.control.aeCompensationStep, that are supported by this camera device.
static CameraCharacteristics.Key<Rational!>	CONTROL_AE_COMPENSATION_STEP Smallest step by which the exposure compensation can be changed.
static CameraCharacteristics.Key<Boolean!>	CONTROL_AE_LOCK_AVAILABLE Whether the camera device supports android.control.aeLock
static CameraCharacteristics.Key<IntArray!>	CONTROL_AF_AVAILABLE_MODES List of auto-focus (AF) modes for android.control.afMode that are supported by this camera device.
static CameraCharacteristics.Key<Boolean!>	CONTROL_AUTOFRAMING_AVAILABLE Whether the camera device supports android.control.autoframing.
static CameraCharacteristics.Key<IntArray!>	CONTROL_AVAILABLE_EFFECTS List of color effects for android.control.effectMode that are supported by this camera device.
static CameraCharacteristics.Key<Array<Capability!>!>	CONTROL_AVAILABLE_EXTENDED_SCENE_MODE_CAPABILITIES The list of extended scene modes for android.control.extendedSceneMode that are supported by this camera device, and each extended scene mode's capabilities such as maximum streaming size, and supported zoom ratio ranges.
static CameraCharacteristics.Key<IntArray!>	CONTROL_AVAILABLE_MODES List of control modes for android.control.mode that are supported by this camera device.
static CameraCharacteristics.Key<IntArray!>	CONTROL_AVAILABLE_SCENE_MODES List of scene modes for android.control.sceneMode that are supported by this camera device.
static CameraCharacteristics.Key<IntArray!>	CONTROL_AVAILABLE_SETTINGS_OVERRIDES List of available settings overrides supported by the camera device that can be used to speed up certain controls.
static CameraCharacteristics.Key<IntArray!>	CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES List of video stabilization modes for android.control.videoStabilizationMode that are supported by this camera device.
static CameraCharacteristics.Key<IntArray!>	CONTROL_AWB_AVAILABLE_MODES List of auto-white-balance modes for android.control.awbMode that are supported by this camera device.
static CameraCharacteristics.Key<Boolean!>	CONTROL_AWB_LOCK_AVAILABLE Whether the camera device supports android.control.awbLock
static CameraCharacteristics.Key<Range<Float!>!>	CONTROL_LOW_LIGHT_BOOST_INFO_LUMINANCE_RANGE The operating luminance range of low light boost measured in lux (lx).
static CameraCharacteristics.Key<Int!>	CONTROL_MAX_REGIONS_AE The maximum number of metering regions that can be used by the auto-exposure (AE) routine.
static CameraCharacteristics.Key<Int!>	CONTROL_MAX_REGIONS_AF The maximum number of metering regions that can be used by the auto-focus (AF) routine.
static CameraCharacteristics.Key<Int!>	CONTROL_MAX_REGIONS_AWB The maximum number of metering regions that can be used by the auto-white balance (AWB) routine.
static CameraCharacteristics.Key<Range<Int!>!>	CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE Range of boosts for android.control.postRawSensitivityBoost supported by this camera device.
static CameraCharacteristics.Key<Range<Float!>!>	CONTROL_ZOOM_RATIO_RANGE Minimum and maximum zoom ratios supported by this camera device.
static CameraCharacteristics.Key<Boolean!>	DEPTH_DEPTH_IS_EXCLUSIVE Indicates whether a capture request may target both a DEPTH16 / DEPTH_POINT_CLOUD output, and normal color outputs (such as YUV_420_888, JPEG, or RAW) simultaneously.
static CameraCharacteristics.Key<IntArray!>	DISTORTION_CORRECTION_AVAILABLE_MODES List of distortion correction modes for android.distortionCorrection.mode that are supported by this camera device.
static CameraCharacteristics.Key<IntArray!>	EDGE_AVAILABLE_EDGE_MODES List of edge enhancement modes for android.edge.mode that are supported by this camera device.
static CameraCharacteristics.Key<Boolean!>	FLASH_INFO_AVAILABLE Whether this camera device has a flash unit.
static CameraCharacteristics.Key<Int!>	FLASH_INFO_STRENGTH_DEFAULT_LEVEL Default flashlight brightness level to be set via android.hardware.camera2.CameraManager#turnOnTorchWithStrengthLevel.
static CameraCharacteristics.Key<Int!>	FLASH_INFO_STRENGTH_MAXIMUM_LEVEL Maximum flashlight brightness level.
static CameraCharacteristics.Key<Int!>	FLASH_SINGLE_STRENGTH_DEFAULT_LEVEL Default flash brightness level for manual flash control in SINGLE mode.
static CameraCharacteristics.Key<Int!>	FLASH_SINGLE_STRENGTH_MAX_LEVEL Maximum flash brightness level for manual flash control in SINGLE mode.
static CameraCharacteristics.Key<Int!>	FLASH_TORCH_STRENGTH_DEFAULT_LEVEL Default flash brightness level for manual flash control in TORCH mode
static CameraCharacteristics.Key<Int!>	FLASH_TORCH_STRENGTH_MAX_LEVEL Maximum flash brightness level for manual flash control in TORCH mode
static CameraCharacteristics.Key<IntArray!>	HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES List of hot pixel correction modes for android.hotPixel.mode that are supported by this camera device.
static CameraCharacteristics.Key<DeviceStateSensorOrientationMap!>	INFO_DEVICE_STATE_SENSOR_ORIENTATION_MAP This lists the mapping between a device folding state and specific camera sensor orientation for logical cameras on a foldable device.
static CameraCharacteristics.Key<Int!>	INFO_SESSION_CONFIGURATION_QUERY_VERSION The version of the session configuration query android.hardware.camera2.CameraDevice.CameraDeviceSetup#isSessionConfigurationSupported and android.hardware.camera2.CameraDevice.CameraDeviceSetup#getSessionCharacteristics APIs.
static CameraCharacteristics.Key<Int!>	INFO_SUPPORTED_HARDWARE_LEVEL Generally classifies the overall set of the camera device functionality.
static CameraCharacteristics.Key<String!>	INFO_VERSION A short string for manufacturer version information about the camera device, such as ISP hardware, sensors, etc.
static CameraCharacteristics.Key<Array<Size!>!>	JPEG_AVAILABLE_THUMBNAIL_SIZES List of JPEG thumbnail sizes for android.jpeg.thumbnailSize supported by this camera device.
static CameraCharacteristics.Key<FloatArray!>	LENS_DISTORTION The correction coefficients to correct for this camera device's radial and tangential lens distortion.
static CameraCharacteristics.Key<FloatArray!>	LENS_DISTORTION_MAXIMUM_RESOLUTION The correction coefficients to correct for this camera device's radial and tangential lens distortion for a CaptureRequest with android.sensor.pixelMode set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.
static CameraCharacteristics.Key<Int!>	LENS_FACING Direction the camera faces relative to device screen.
static CameraCharacteristics.Key<FloatArray!>	LENS_INFO_AVAILABLE_APERTURES List of aperture size values for android.lens.aperture that are supported by this camera device.
static CameraCharacteristics.Key<FloatArray!>	LENS_INFO_AVAILABLE_FILTER_DENSITIES List of neutral density filter values for android.lens.filterDensity that are supported by this camera device.
static CameraCharacteristics.Key<FloatArray!>	LENS_INFO_AVAILABLE_FOCAL_LENGTHS List of focal lengths for android.lens.focalLength that are supported by this camera device.
static CameraCharacteristics.Key<IntArray!>	LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION List of optical image stabilization (OIS) modes for android.lens.opticalStabilizationMode that are supported by this camera device.
static CameraCharacteristics.Key<Int!>	LENS_INFO_FOCUS_DISTANCE_CALIBRATION The lens focus distance calibration quality.
static CameraCharacteristics.Key<Float!>	LENS_INFO_HYPERFOCAL_DISTANCE Hyperfocal distance for this lens.
static CameraCharacteristics.Key<Float!>	LENS_INFO_MINIMUM_FOCUS_DISTANCE Shortest distance from frontmost surface of the lens that can be brought into sharp focus.
static CameraCharacteristics.Key<FloatArray!>	LENS_INTRINSIC_CALIBRATION The parameters for this camera device's intrinsic calibration.
static CameraCharacteristics.Key<FloatArray!>	LENS_INTRINSIC_CALIBRATION_MAXIMUM_RESOLUTION The parameters for this camera device's intrinsic calibration when android.sensor.pixelMode is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.
static CameraCharacteristics.Key<Int!>	LENS_POSE_REFERENCE The origin for android.lens.poseTranslation, and the accuracy of android.lens.poseTranslation and android.lens.poseRotation.
static CameraCharacteristics.Key<FloatArray!>	LENS_POSE_ROTATION The orientation of the camera relative to the sensor coordinate system.
static CameraCharacteristics.Key<FloatArray!>	LENS_POSE_TRANSLATION Position of the camera optical center.
static CameraCharacteristics.Key<FloatArray!>	LENS_RADIAL_DISTORTION The correction coefficients to correct for this camera device's radial and tangential lens distortion.
static CameraCharacteristics.Key<Int!>	LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE The accuracy of frame timestamp synchronization between physical cameras
static CameraCharacteristics.Key<IntArray!>	NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES List of noise reduction modes for android.noiseReduction.mode that are supported by this camera device.
static CameraCharacteristics.Key<Int!>	REPROCESS_MAX_CAPTURE_STALL The maximal camera capture pipeline stall (in unit of frame count) introduced by a reprocess capture request.
static CameraCharacteristics.Key<IntArray!>	REQUEST_AVAILABLE_CAPABILITIES List of capabilities that this camera device advertises as fully supporting.
static CameraCharacteristics.Key<ColorSpaceProfiles!>	REQUEST_AVAILABLE_COLOR_SPACE_PROFILES An interface for querying the color space profiles supported by a camera device.
static CameraCharacteristics.Key<DynamicRangeProfiles!>	REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES Devices supporting the 10-bit output capability android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT must list their supported dynamic range profiles along with capture request constraints for specific profile combinations.
static CameraCharacteristics.Key<Int!>	REQUEST_MAX_NUM_INPUT_STREAMS The maximum numbers of any type of input streams that can be configured and used simultaneously by a camera device.
static CameraCharacteristics.Key<Int!>	REQUEST_MAX_NUM_OUTPUT_PROC The maximum numbers of different types of output streams that can be configured and used simultaneously by a camera device for any processed (but not-stalling) formats.
static CameraCharacteristics.Key<Int!>	REQUEST_MAX_NUM_OUTPUT_PROC_STALLING The maximum numbers of different types of output streams that can be configured and used simultaneously by a camera device for any processed (and stalling) formats.
static CameraCharacteristics.Key<Int!>	REQUEST_MAX_NUM_OUTPUT_RAW The maximum numbers of different types of output streams that can be configured and used simultaneously by a camera device for any RAW formats.
static CameraCharacteristics.Key<Int!>	REQUEST_PARTIAL_RESULT_COUNT Defines how many sub-components a result will be composed of.
static CameraCharacteristics.Key<Byte!>	REQUEST_PIPELINE_MAX_DEPTH Specifies the number of maximum pipeline stages a frame has to go through from when it's exposed to when it's available to the framework.
static CameraCharacteristics.Key<Long!>	REQUEST_RECOMMENDED_TEN_BIT_DYNAMIC_RANGE_PROFILE Recommended 10-bit dynamic range profile.
static CameraCharacteristics.Key<Float!>	SCALER_AVAILABLE_MAX_DIGITAL_ZOOM The maximum ratio between both active area width and crop region width, and active area height and crop region height, for android.scaler.cropRegion.
static CameraCharacteristics.Key<IntArray!>	SCALER_AVAILABLE_ROTATE_AND_CROP_MODES List of rotate-and-crop modes for android.scaler.rotateAndCrop that are supported by this camera device.
static CameraCharacteristics.Key<LongArray!>	SCALER_AVAILABLE_STREAM_USE_CASES The stream use cases supported by this camera device.
static CameraCharacteristics.Key<Int!>	SCALER_CROPPING_TYPE The crop type that this camera device supports.
static CameraCharacteristics.Key<Size!>	SCALER_DEFAULT_SECURE_IMAGE_SIZE Default YUV/PRIVATE size to use for requesting secure image buffers.
static CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>	SCALER_MANDATORY_CONCURRENT_STREAM_COMBINATIONS An array of mandatory concurrent stream combinations.
static CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>	SCALER_MANDATORY_MAXIMUM_RESOLUTION_STREAM_COMBINATIONS An array of mandatory stream combinations which are applicable when android.hardware.camera2.CaptureRequest has android.sensor.pixelMode set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.
static CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>	SCALER_MANDATORY_PREVIEW_STABILIZATION_OUTPUT_STREAM_COMBINATIONS An array of mandatory stream combinations which are applicable when device lists PREVIEW_STABILIZATION in android.control.availableVideoStabilizationModes.
static CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>	SCALER_MANDATORY_STREAM_COMBINATIONS An array of mandatory stream combinations generated according to the camera device android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL and android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES.
static CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>	SCALER_MANDATORY_TEN_BIT_OUTPUT_STREAM_COMBINATIONS An array of mandatory stream combinations which are applicable when device support the 10-bit output capability android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT This is an app-readable conversion of the 10 bit output mandatory stream combination tables.
static CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>	SCALER_MANDATORY_USE_CASE_STREAM_COMBINATIONS An array of mandatory stream combinations with stream use cases.
static CameraCharacteristics.Key<MultiResolutionStreamConfigurationMap!>	SCALER_MULTI_RESOLUTION_STREAM_CONFIGURATION_MAP The multi-resolution stream configurations supported by this logical camera or ultra high resolution sensor camera device.
static CameraCharacteristics.Key<StreamConfigurationMap!>	SCALER_STREAM_CONFIGURATION_MAP The available stream configurations that this camera device supports; also includes the minimum frame durations and the stall durations for each format/size combination.
static CameraCharacteristics.Key<StreamConfigurationMap!>	SCALER_STREAM_CONFIGURATION_MAP_MAXIMUM_RESOLUTION The available stream configurations that this camera device supports when given a CaptureRequest with android.sensor.pixelMode set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION; also includes the minimum frame durations and the stall durations for each format/size combination.
static CameraCharacteristics.Key<IntArray!>	SENSOR_AVAILABLE_TEST_PATTERN_MODES List of sensor test pattern modes for android.sensor.testPatternMode supported by this camera device.
static CameraCharacteristics.Key<BlackLevelPattern!>	SENSOR_BLACK_LEVEL_PATTERN A fixed black level offset for each of the color filter arrangement (CFA) mosaic channels.
static CameraCharacteristics.Key<ColorSpaceTransform!>	SENSOR_CALIBRATION_TRANSFORM1 A per-device calibration transform matrix that maps from the reference sensor colorspace to the actual device sensor colorspace.
static CameraCharacteristics.Key<ColorSpaceTransform!>	SENSOR_CALIBRATION_TRANSFORM2 A per-device calibration transform matrix that maps from the reference sensor colorspace to the actual device sensor colorspace (this is the colorspace of the raw buffer data).
static CameraCharacteristics.Key<ColorSpaceTransform!>	SENSOR_COLOR_TRANSFORM1 A matrix that transforms color values from CIE XYZ color space to reference sensor color space.
static CameraCharacteristics.Key<ColorSpaceTransform!>	SENSOR_COLOR_TRANSFORM2 A matrix that transforms color values from CIE XYZ color space to reference sensor color space.
static CameraCharacteristics.Key<ColorSpaceTransform!>	SENSOR_FORWARD_MATRIX1 A matrix that transforms white balanced camera colors from the reference sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.
static CameraCharacteristics.Key<ColorSpaceTransform!>	SENSOR_FORWARD_MATRIX2 A matrix that transforms white balanced camera colors from the reference sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.
static CameraCharacteristics.Key<Rect!>	SENSOR_INFO_ACTIVE_ARRAY_SIZE The area of the image sensor which corresponds to active pixels after any geometric distortion correction has been applied.
static CameraCharacteristics.Key<Rect!>	SENSOR_INFO_ACTIVE_ARRAY_SIZE_MAXIMUM_RESOLUTION The area of the image sensor which corresponds to active pixels after any geometric distortion correction has been applied, when the sensor runs in maximum resolution mode.
static CameraCharacteristics.Key<Size!>	SENSOR_INFO_BINNING_FACTOR Dimensions of the group of pixels which are under the same color filter.
static CameraCharacteristics.Key<Int!>	SENSOR_INFO_COLOR_FILTER_ARRANGEMENT The arrangement of color filters on sensor; represents the colors in the top-left 2x2 section of the sensor, in reading order, for a Bayer camera, or the light spectrum it captures for MONOCHROME camera.
static CameraCharacteristics.Key<Range<Long!>!>	SENSOR_INFO_EXPOSURE_TIME_RANGE The range of image exposure times for android.sensor.exposureTime supported by this camera device.
static CameraCharacteristics.Key<Boolean!>	SENSOR_INFO_LENS_SHADING_APPLIED Whether the RAW images output from this camera device are subject to lens shading correction.
static CameraCharacteristics.Key<Long!>	SENSOR_INFO_MAX_FRAME_DURATION The maximum possible frame duration (minimum frame rate) for android.sensor.frameDuration that is supported this camera device.
static CameraCharacteristics.Key<SizeF!>	SENSOR_INFO_PHYSICAL_SIZE The physical dimensions of the full pixel array.
static CameraCharacteristics.Key<Size!>	SENSOR_INFO_PIXEL_ARRAY_SIZE Dimensions of the full pixel array, possibly including black calibration pixels.
static CameraCharacteristics.Key<Size!>	SENSOR_INFO_PIXEL_ARRAY_SIZE_MAXIMUM_RESOLUTION Dimensions of the full pixel array, possibly including black calibration pixels, when the sensor runs in maximum resolution mode.
static CameraCharacteristics.Key<Rect!>	SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE The area of the image sensor which corresponds to active pixels prior to the application of any geometric distortion correction.
static CameraCharacteristics.Key<Rect!>	SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE_MAXIMUM_RESOLUTION The area of the image sensor which corresponds to active pixels prior to the application of any geometric distortion correction, when the sensor runs in maximum resolution mode.
static CameraCharacteristics.Key<Range<Int!>!>	SENSOR_INFO_SENSITIVITY_RANGE Range of sensitivities for android.sensor.sensitivity supported by this camera device.
static CameraCharacteristics.Key<Int!>	SENSOR_INFO_TIMESTAMP_SOURCE The time base source for sensor capture start timestamps.
static CameraCharacteristics.Key<Int!>	SENSOR_INFO_WHITE_LEVEL Maximum raw value output by sensor.
static CameraCharacteristics.Key<Int!>	SENSOR_MAX_ANALOG_SENSITIVITY Maximum sensitivity that is implemented purely through analog gain.
static CameraCharacteristics.Key<Array<Rect!>!>	SENSOR_OPTICAL_BLACK_REGIONS List of disjoint rectangles indicating the sensor optically shielded black pixel regions.
static CameraCharacteristics.Key<Int!>	SENSOR_ORIENTATION Clockwise angle through which the output image needs to be rotated to be upright on the device screen in its native orientation.
static CameraCharacteristics.Key<Int!>	SENSOR_READOUT_TIMESTAMP Whether or not the camera device supports readout timestamp and onReadoutStarted callback.
static CameraCharacteristics.Key<Int!>	SENSOR_REFERENCE_ILLUMINANT1 The standard reference illuminant used as the scene light source when calculating the android.sensor.colorTransform1, android.sensor.calibrationTransform1, and android.sensor.forwardMatrix1 matrices.
static CameraCharacteristics.Key<Byte!>	SENSOR_REFERENCE_ILLUMINANT2 The standard reference illuminant used as the scene light source when calculating the android.sensor.colorTransform2, android.sensor.calibrationTransform2, and android.sensor.forwardMatrix2 matrices.
static CameraCharacteristics.Key<IntArray!>	SHADING_AVAILABLE_MODES List of lens shading modes for android.shading.mode that are supported by this camera device.
static CameraCharacteristics.Key<IntArray!>	STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES List of face detection modes for android.statistics.faceDetectMode that are supported by this camera device.
static CameraCharacteristics.Key<BooleanArray!>	STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES List of hot pixel map output modes for android.statistics.hotPixelMapMode that are supported by this camera device.
static CameraCharacteristics.Key<IntArray!>	STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES List of lens shading map output modes for android.statistics.lensShadingMapMode that are supported by this camera device.
static CameraCharacteristics.Key<IntArray!>	STATISTICS_INFO_AVAILABLE_OIS_DATA_MODES List of OIS data output modes for android.statistics.oisDataMode that are supported by this camera device.
static CameraCharacteristics.Key<Int!>	STATISTICS_INFO_MAX_FACE_COUNT The maximum number of simultaneously detectable faces.
static CameraCharacteristics.Key<Int!>	SYNC_MAX_LATENCY The maximum number of frames that can occur after a request (different than the previous) has been submitted, and before the result's state becomes synchronized.
static CameraCharacteristics.Key<IntArray!>	TONEMAP_AVAILABLE_TONE_MAP_MODES List of tonemapping modes for android.tonemap.mode that are supported by this camera device.
static CameraCharacteristics.Key<Int!>	TONEMAP_MAX_CURVE_POINTS Maximum number of supported points in the tonemap curve that can be used for android.tonemap.curve.

Public methods

get

Added in API level 21

fun <T : Any!> get(key: CameraCharacteristics.Key<T>!): T?

Get a camera characteristics field value.

The field definitions can be found in CameraCharacteristics.

Parameters
key	CameraCharacteristics.Key<T>!: The characteristics field to read.

Return
T?	The value of that key, or null if the field is not set.

Exceptions
java.lang.IllegalArgumentException	if the key was not valid

getAvailableCaptureRequestKeys

Added in API level 21

fun getAvailableCaptureRequestKeys(): MutableList<CaptureRequest.Key<*>!>

Returns the list of keys supported by this CameraDevice for querying with a CaptureRequest.

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

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

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

Return
MutableList<CaptureRequest.Key<*>!>	List of keys supported by this CameraDevice for CaptureRequests. This value cannot be null.

getAvailableCaptureResultKeys

Added in API level 21

fun getAvailableCaptureResultKeys(): MutableList<CaptureResult.Key<*>!>

Returns the list of keys supported by this CameraDevice for querying with a CaptureResult.

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

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

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

Return
MutableList<CaptureResult.Key<*>!>	List of keys supported by this CameraDevice for CaptureResults. This value cannot be null.

getAvailablePhysicalCameraRequestKeys

Added in API level 28

fun getAvailablePhysicalCameraRequestKeys(): MutableList<CaptureRequest.Key<*>!>!

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

This is a subset of android.request.availableRequestKeys which contains a list of keys that can be overridden using CaptureRequest.Builder.setPhysicalCameraKey. The respective value of such request key can be obtained by calling CaptureRequest.Builder.getPhysicalCameraKey. Capture requests that contain individual physical device requests must be built via android.hardware.camera2.CameraDevice#createCaptureRequest(int, Set).

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

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

Return
MutableList<CaptureRequest.Key<*>!>!	List of keys that can be overridden in individual physical device requests. In case the camera device doesn't support such keys the list can be null.

getAvailableSessionCharacteristicsKeys

Added in API level 35

fun getAvailableSessionCharacteristicsKeys(): MutableList<CameraCharacteristics.Key<*>!>

Get the keys in Camera Characteristics whose values are capture session specific. The session specific characteristics can be acquired by calling CameraDevice.getSessionCharacteristics().

Note that getAvailableSessionKeys returns the CaptureRequest keys that are difficult to apply per-frame, whereas this function returns CameraCharacteristics keys that are dependent on a particular SessionConfiguration.

Return
MutableList<CameraCharacteristics.Key<*>!>	List of CameraCharacteristic keys containing characterisitics specific to a session configuration. If INFO_SESSION_CONFIGURATION_QUERY_VERSION is at least Build.VERSION_CODES.VANILLA_ICE_CREAM, then this list will only contain CONTROL_ZOOM_RATIO_RANGE and SCALER_AVAILABLE_MAX_DIGITAL_ZOOM This value cannot be null.

See Also

• #INFO_SESSION_CONFIGURATION_QUERY_VERSION

getAvailableSessionKeys

Added in API level 28

fun getAvailableSessionKeys(): MutableList<CaptureRequest.Key<*>!>!

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

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

• The camera client starts by querying the session parameter key list via android.hardware.camera2.CameraCharacteristics#getAvailableSessionKeys.
• Before triggering the capture session create sequence, a capture request must be built via android.hardware.camera2.CameraDevice#createCaptureRequest using an appropriate template matching the particular use case.
• The client should go over the list of session parameters and check whether some of the keys listed matches with the parameters that they intend to modify as part of the first capture request.
• If there is no such match, the capture request can be passed unmodified to SessionConfiguration.setSessionParameters.
• If matches do exist, the client should update the respective values and pass the request to SessionConfiguration.setSessionParameters.
• After the capture session initialization completes the session parameter key list can continue to serve as reference when posting or updating further requests. As mentioned above further changes to session parameters should ideally be avoided, if updates are necessary however clients could expect a delay/glitch during the parameter switch.

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

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

Return
MutableList<CaptureRequest.Key<*>!>!	List of keys that can be passed during capture session initialization. In case the camera device doesn't support such keys the list can be null.

getKeys

Added in API level 21

fun getKeys(): MutableList<CameraCharacteristics.Key<*>!>

Returns a list of the keys contained in this map.

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

All values retrieved by a key from this list with get are guaranteed to be non-null. Each key is only listed once in the list. The order of the keys is undefined.

Return
MutableList<CameraCharacteristics.Key<*>!>	This value cannot be null.

getKeysNeedingPermission

Added in API level 29

fun getKeysNeedingPermission(): MutableList<CameraCharacteristics.Key<*>!>

Returns a subset of the list returned by getKeys with all keys that require camera clients to obtain the android.Manifest.permission#CAMERA permission.

If an application calls CameraManager.getCameraCharacteristics without holding the android.Manifest.permission#CAMERA permission, all keys in this list will not be available, and calling get will return null for those keys. If the application obtains the android.Manifest.permission#CAMERA permission, then the CameraCharacteristics from a call to a subsequent CameraManager.getCameraCharacteristics will have the keys available.

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

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

Return
MutableList<CameraCharacteristics.Key<*>!>	List of camera characteristic keys that require the android.Manifest.permission#CAMERA permission. The list can be empty in case there are no currently present keys that need additional permission.

getPhysicalCameraIds

Added in API level 28

fun getPhysicalCameraIds(): MutableSet<String!>

Returns the set of physical camera ids that this logical CameraDevice is made up of.

A camera device is a logical camera if it has REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA capability. If the camera device doesn't have the capability, the return value will be an empty set.

Prior to API level 29, all returned IDs are guaranteed to be returned by android.hardware.camera2.CameraManager#getCameraIdList, and can be opened directly by android.hardware.camera2.CameraManager#openCamera. Starting from API level 29, for each of the returned ID, if it's also returned by CameraManager.getCameraIdList, it can be used as a standalone camera by android.hardware.camera2.CameraManager#openCamera. Otherwise, the camera ID can only be used as part of the current logical camera.

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

Return
MutableSet<String!>	Set of physical camera ids for this logical camera device. This value cannot be null.

getRecommendedStreamConfigurationMap

Added in API level 29

fun getRecommendedStreamConfigurationMap(usecase: Int): RecommendedStreamConfigurationMap?

Retrieve camera device recommended stream configuration map RecommendedStreamConfigurationMap for a given use case.

The stream configurations advertised here are efficient in terms of power and performance for common use cases like preview, video, snapshot, etc. The recommended maps are usually only small subsets of the exhaustive list provided in SCALER_STREAM_CONFIGURATION_MAP and suggested for a particular use case by the camera device implementation. For further information about the expected configurations in various scenarios please refer to:

• RecommendedStreamConfigurationMap.USECASE_PREVIEW
• RecommendedStreamConfigurationMap.USECASE_RECORD
• RecommendedStreamConfigurationMap.USECASE_VIDEO_SNAPSHOT
• RecommendedStreamConfigurationMap.USECASE_SNAPSHOT
• RecommendedStreamConfigurationMap.USECASE_RAW
• RecommendedStreamConfigurationMap.USECASE_ZSL
• RecommendedStreamConfigurationMap.USECASE_LOW_LATENCY_SNAPSHOT

For example on how this can be used by camera clients to find out the maximum recommended preview and snapshot resolution, consider the following pseudo-code:

<code>
  public static Size getMaxSize(Size... sizes) {
      if (sizes == null || sizes.length == 0) {
          throw new IllegalArgumentException("sizes was empty");
      }
 
      Size sz = sizes[0];
      for (Size size : sizes) {
          if (size.getWidth() * size.getHeight() &gt; sz.getWidth() * sz.getHeight()) {
              sz = size;
          }
      }
 
      return sz;
  }
 
  CameraCharacteristics characteristics =
          cameraManager.getCameraCharacteristics(cameraId);
  RecommendedStreamConfigurationMap previewConfig =
          characteristics.getRecommendedStreamConfigurationMap(
                   RecommendedStreamConfigurationMap.USECASE_PREVIEW);
  RecommendedStreamConfigurationMap snapshotConfig =
          characteristics.getRecommendedStreamConfigurationMap(
                   RecommendedStreamConfigurationMap.USECASE_SNAPSHOT);
 
  if ((previewConfig != null) &amp;&amp; (snapshotConfig != null)) {
 
       Set
 <size>
   snapshotSizeSet = snapshotConfig.getOutputSizes( ImageFormat.JPEG); Size[] snapshotSizes = new Size[snapshotSizeSet.size()]; snapshotSizes = snapshotSizeSet.toArray(snapshotSizes); Size suggestedMaxJpegSize = getMaxSize(snapshotSizes); Set
  <size>
    previewSizeSet = snapshotConfig.getOutputSizes( ImageFormat.PRIVATE); Size[] previewSizes = new Size[previewSizeSet.size()]; previewSizes = previewSizeSet.toArray(previewSizes); Size suggestedMaxPreviewSize = getMaxSize(previewSizes); } 
  </size>
 </size></code>

Similar logic can be used for other use cases as well.

Support for recommended stream configurations is optional. In case there a no suggested configurations for the particular use case, please refer to SCALER_STREAM_CONFIGURATION_MAP for the exhaustive available list.

Parameters

usecase

Int: Use case id. Value is android.hardware.camera2.params.RecommendedStreamConfigurationMap#USECASE_PREVIEW, android.hardware.camera2.params.RecommendedStreamConfigurationMap#USECASE_RECORD, android.hardware.camera2.params.RecommendedStreamConfigurationMap#USECASE_VIDEO_SNAPSHOT, android.hardware.camera2.params.RecommendedStreamConfigurationMap#USECASE_SNAPSHOT, android.hardware.camera2.params.RecommendedStreamConfigurationMap#USECASE_ZSL, android.hardware.camera2.params.RecommendedStreamConfigurationMap#USECASE_RAW, android.hardware.camera2.params.RecommendedStreamConfigurationMap#USECASE_LOW_LATENCY_SNAPSHOT, or android.hardware.camera2.params.RecommendedStreamConfigurationMap#USECASE_10BIT_OUTPUT

Return
RecommendedStreamConfigurationMap?	Valid RecommendedStreamConfigurationMap or null in case the camera device doesn't have any recommendation for this use case or the recommended configurations are invalid.

Exceptions
java.lang.IllegalArgumentException	In case the use case argument is invalid.

Properties

AUTOMOTIVE_LENS_FACING

Added in API level 33

static val AUTOMOTIVE_LENS_FACING: CameraCharacteristics.Key<IntArray!>

The direction of the camera faces relative to the vehicle body frame and the passenger seats.

This enum defines the lens facing characteristic of the cameras on the automotive devices with locations android.automotive.location defines. If the system has FEATURE_AUTOMOTIVE, the camera will have this entry in its static metadata.

When android.automotive.location is INTERIOR, this has one or more INTERIOR_* values or a single EXTERIOR_* value. When this has more than one INTERIOR_*, the first value must be the one for the seat closest to the optical axis. If this contains INTERIOR_OTHER, all other values will be ineffective.

When android.automotive.location is EXTERIOR_* or EXTRA, this has a single EXTERIOR_* value.

If a camera has INTERIOR_OTHER or EXTERIOR_OTHER, or more than one camera is at the same location and facing the same direction, their static metadata will list the following entries, so that applications can determine their lenses' exact facing directions:

• android.lens.poseReference
• android.lens.poseRotation
• android.lens.poseTranslation

Possible values:

• EXTERIOR_OTHER
• EXTERIOR_FRONT
• EXTERIOR_REAR
• EXTERIOR_LEFT
• EXTERIOR_RIGHT
• INTERIOR_OTHER
• INTERIOR_SEAT_ROW_1_LEFT
• INTERIOR_SEAT_ROW_1_CENTER
• INTERIOR_SEAT_ROW_1_RIGHT
• INTERIOR_SEAT_ROW_2_LEFT
• INTERIOR_SEAT_ROW_2_CENTER
• INTERIOR_SEAT_ROW_2_RIGHT
• INTERIOR_SEAT_ROW_3_LEFT
• INTERIOR_SEAT_ROW_3_CENTER
• INTERIOR_SEAT_ROW_3_RIGHT

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#AUTOMOTIVE_LOCATION
• android.hardware.camera2.CameraCharacteristics#LENS_POSE_REFERENCE
• android.hardware.camera2.CameraCharacteristics#LENS_POSE_ROTATION
• android.hardware.camera2.CameraCharacteristics#LENS_POSE_TRANSLATION
• #AUTOMOTIVE_LENS_FACING_EXTERIOR_OTHER
• #AUTOMOTIVE_LENS_FACING_EXTERIOR_FRONT
• #AUTOMOTIVE_LENS_FACING_EXTERIOR_REAR
• #AUTOMOTIVE_LENS_FACING_EXTERIOR_LEFT
• #AUTOMOTIVE_LENS_FACING_EXTERIOR_RIGHT
• #AUTOMOTIVE_LENS_FACING_INTERIOR_OTHER
• #AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_1_LEFT
• #AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_1_CENTER
• #AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_1_RIGHT
• #AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_2_LEFT
• #AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_2_CENTER
• #AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_2_RIGHT
• #AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_3_LEFT
• #AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_3_CENTER
• #AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_3_RIGHT

AUTOMOTIVE_LOCATION

Added in API level 33

static val AUTOMOTIVE_LOCATION: CameraCharacteristics.Key<Int!>

Location of the cameras on the automotive devices.

This enum defines the locations of the cameras relative to the vehicle body frame on the automotive sensor coordinate system. If the system has FEATURE_AUTOMOTIVE, the camera will have this entry in its static metadata.

• INTERIOR is the inside of the vehicle body frame (or the passenger cabin).
• EXTERIOR is the outside of the vehicle body frame.
• EXTRA is the extra vehicle such as a trailer.

Each side of the vehicle body frame on this coordinate system is defined as below:

• FRONT is where the Y-axis increases toward.
• REAR is where the Y-axis decreases toward.
• LEFT is where the X-axis decreases toward.
• RIGHT is where the X-axis increases toward.

If the camera has either EXTERIOR_OTHER or EXTRA_OTHER, its static metadata will list the following entries, so that applications can determine the camera's exact location:

• android.lens.poseReference
• android.lens.poseRotation
• android.lens.poseTranslation

Possible values:

• INTERIOR
• EXTERIOR_OTHER
• EXTERIOR_FRONT
• EXTERIOR_REAR
• EXTERIOR_LEFT
• EXTERIOR_RIGHT
• EXTRA_OTHER
• EXTRA_FRONT
• EXTRA_REAR
• EXTRA_LEFT
• EXTRA_RIGHT

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#LENS_POSE_REFERENCE
• android.hardware.camera2.CameraCharacteristics#LENS_POSE_ROTATION
• android.hardware.camera2.CameraCharacteristics#LENS_POSE_TRANSLATION
• #AUTOMOTIVE_LOCATION_INTERIOR
• #AUTOMOTIVE_LOCATION_EXTERIOR_OTHER
• #AUTOMOTIVE_LOCATION_EXTERIOR_FRONT
• #AUTOMOTIVE_LOCATION_EXTERIOR_REAR
• #AUTOMOTIVE_LOCATION_EXTERIOR_LEFT
• #AUTOMOTIVE_LOCATION_EXTERIOR_RIGHT
• #AUTOMOTIVE_LOCATION_EXTRA_OTHER
• #AUTOMOTIVE_LOCATION_EXTRA_FRONT
• #AUTOMOTIVE_LOCATION_EXTRA_REAR
• #AUTOMOTIVE_LOCATION_EXTRA_LEFT
• #AUTOMOTIVE_LOCATION_EXTRA_RIGHT

COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES

Added in API level 21

static val COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

LEGACY devices will always only support FAST mode.

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#COLOR_CORRECTION_ABERRATION_MODE

CONTROL_AE_AVAILABLE_ANTIBANDING_MODES

Added in API level 21

static val CONTROL_AE_AVAILABLE_ANTIBANDING_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AE_ANTIBANDING_MODE

CONTROL_AE_AVAILABLE_MODES

Added in API level 21

static val CONTROL_AE_AVAILABLE_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

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

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

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AE_MODE

CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES

Added in API level 21

static val CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES: CameraCharacteristics.Key<Array<Range<Int!>!>!>

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

For devices at the LEGACY level or above:

• For constant-framerate recording, for each normal CamcorderProfile, that is, a CamcorderProfile that has quality in the range [QUALITY_LOW, QUALITY_2160P], if the profile is supported by the device and has videoFrameRate x, this list will always include (x,x).

• Also, a camera device must either not support any CamcorderProfile, or support at least one normal CamcorderProfile that has videoFrameRate x >= 24.

For devices at the LIMITED level or above:

• For devices that advertise NIR color filter arrangement in android.sensor.info.colorFilterArrangement, this list will always include (max, max) where max = the maximum output frame rate of the maximum YUV_420_888 output size.
• For devices advertising any color filter arrangement other than NIR, or devices not advertising color filter arrangement, this list will always include (min, max) and (max, max) where min <= 15 and max = the maximum output frame rate of the maximum YUV_420_888 output size.

Units: Frames per second (FPS)

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AE_TARGET_FPS_RANGE
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT

CONTROL_AE_COMPENSATION_RANGE

Added in API level 21

static val CONTROL_AE_COMPENSATION_RANGE: CameraCharacteristics.Key<Range<Int!>!>

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

Range of valid values:

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

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

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

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

LEGACY devices may support a smaller range than this.

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#CONTROL_AE_COMPENSATION_STEP
• android.hardware.camera2.CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION

CONTROL_AE_COMPENSATION_STEP

Added in API level 21

static val CONTROL_AE_COMPENSATION_STEP: CameraCharacteristics.Key<Rational!>

Smallest step by which the exposure compensation can be changed.

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

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

Units: Exposure Value (EV)

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AE_EXPOSURE_COMPENSATION

CONTROL_AE_LOCK_AVAILABLE

Added in API level 23

static val CONTROL_AE_LOCK_AVAILABLE: CameraCharacteristics.Key<Boolean!>

Whether the camera device supports android.control.aeLock

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AE_LOCK

CONTROL_AF_AVAILABLE_MODES

Added in API level 21

static val CONTROL_AF_AVAILABLE_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

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

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AF_MODE
• android.hardware.camera2.CaptureRequest#LENS_FOCUS_DISTANCE
• android.hardware.camera2.CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE

CONTROL_AUTOFRAMING_AVAILABLE

Added in API level 34

static val CONTROL_AUTOFRAMING_AVAILABLE: CameraCharacteristics.Key<Boolean!>

Whether the camera device supports android.control.autoframing.

Will be false if auto-framing is not available.

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AUTOFRAMING
• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL

CONTROL_AVAILABLE_EFFECTS

Added in API level 21

static val CONTROL_AVAILABLE_EFFECTS: CameraCharacteristics.Key<IntArray!>

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

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

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

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

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_EFFECT_MODE
• android.hardware.camera2.CaptureRequest#CONTROL_MODE

CONTROL_AVAILABLE_EXTENDED_SCENE_MODE_CAPABILITIES

Added in API level 30

static val CONTROL_AVAILABLE_EXTENDED_SCENE_MODE_CAPABILITIES: CameraCharacteristics.Key<Array<Capability!>!>

The list of extended scene modes for android.control.extendedSceneMode that are supported by this camera device, and each extended scene mode's capabilities such as maximum streaming size, and supported zoom ratio ranges.

For DISABLED mode, the camera behaves normally with no extended scene mode enabled.

For BOKEH_STILL_CAPTURE mode, the maximum streaming dimension specifies the limit under which bokeh is effective when capture intent is PREVIEW. Note that when capture intent is PREVIEW, the bokeh effect may not be as high quality compared to STILL_CAPTURE intent in order to maintain reasonable frame rate. The maximum streaming dimension must be one of the YUV_420_888 or PRIVATE resolutions in availableStreamConfigurations, or (0, 0) if preview bokeh is not supported. If the application configures a stream larger than the maximum streaming dimension, bokeh effect may not be applied for this stream for PREVIEW intent.

For BOKEH_CONTINUOUS mode, the maximum streaming dimension specifies the limit under which bokeh is effective. This dimension must be one of the YUV_420_888 or PRIVATE resolutions in availableStreamConfigurations, and if the sensor maximum resolution is larger than or equal to 1080p, the maximum streaming dimension must be at least 1080p. If the application configures a stream with larger dimension, the stream may not have bokeh effect applied.

When extended scene mode is set, the camera device may have limited range of zoom ratios compared to when the mode is DISABLED. availableExtendedSceneModeCapabilities lists the zoom ranges for all supported extended modes. A range of (1.0, 1.0) means that no zoom (optical or digital) is supported.

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_EXTENDED_SCENE_MODE

CONTROL_AVAILABLE_MODES

Added in API level 23

static val CONTROL_AVAILABLE_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_MODE

CONTROL_AVAILABLE_SCENE_MODES

Added in API level 21

static val CONTROL_AVAILABLE_SCENE_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

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

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_SCENE_MODE
• android.hardware.camera2.CameraCharacteristics#STATISTICS_INFO_MAX_FACE_COUNT

CONTROL_AVAILABLE_SETTINGS_OVERRIDES

Added in API level 34

static val CONTROL_AVAILABLE_SETTINGS_OVERRIDES: CameraCharacteristics.Key<IntArray!>

List of available settings overrides supported by the camera device that can be used to speed up certain controls.

When not all controls within a CaptureRequest are required to take effect at the same time on the outputs, the camera device may apply certain request keys sooner to improve latency. This list contains such supported settings overrides. Each settings override corresponds to a set of CaptureRequest keys that can be sped up when applying.

A supported settings override can be passed in via android.hardware.camera2.CaptureRequest#CONTROL_SETTINGS_OVERRIDE, and the CaptureRequest keys corresponding to the override are applied as soon as possible, not bound by per-frame synchronization. See android.control.settingsOverride for the CaptureRequest keys for each override.

OFF is always included in this list.

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

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_SETTINGS_OVERRIDE

CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES

Added in API level 21

static val CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES: CameraCharacteristics.Key<IntArray!>

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

OFF will always be listed.

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_VIDEO_STABILIZATION_MODE

CONTROL_AWB_AVAILABLE_MODES

Added in API level 21

static val CONTROL_AWB_AVAILABLE_MODES: CameraCharacteristics.Key<IntArray!>

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

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

All camera devices will support ON mode.

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

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#COLOR_CORRECTION_GAINS
• android.hardware.camera2.CaptureRequest#COLOR_CORRECTION_MODE
• android.hardware.camera2.CaptureRequest#COLOR_CORRECTION_TRANSFORM
• android.hardware.camera2.CaptureRequest#CONTROL_AWB_MODE

CONTROL_AWB_LOCK_AVAILABLE

Added in API level 23

static val CONTROL_AWB_LOCK_AVAILABLE: CameraCharacteristics.Key<Boolean!>

Whether the camera device supports android.control.awbLock

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AWB_LOCK

CONTROL_LOW_LIGHT_BOOST_INFO_LUMINANCE_RANGE

Added in API level 35

static val CONTROL_LOW_LIGHT_BOOST_INFO_LUMINANCE_RANGE: CameraCharacteristics.Key<Range<Float!>!>

The operating luminance range of low light boost measured in lux (lx).

Range of valid values:

The lower bound indicates the lowest scene luminance value the AE mode 'ON_LOW_LIGHT_BOOST_BRIGHTNESS_PRIORITY' can operate within. Scenes of lower luminance than this may receive less brightening, increased noise, or artifacts.

The upper bound indicates the luminance threshold at the point when the mode is enabled. For example, 'Range[0.3, 30.0]' defines 0.3 lux being the lowest scene luminance the mode can reliably support. 30.0 lux represents the threshold when this mode is activated. Scenes measured at less than or equal to 30 lux will activate low light boost.

If this key is defined, then the AE mode 'ON_LOW_LIGHT_BOOST_BRIGHTNESS_PRIORITY' will also be present.

Optional - The value for this key may be null on some devices.

CONTROL_MAX_REGIONS_AE

Added in API level 21

static val CONTROL_MAX_REGIONS_AE: CameraCharacteristics.Key<Int!>

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

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

Range of valid values:
Value will be >= 0. For FULL-capability devices, this value will be >= 1.

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AE_REGIONS

CONTROL_MAX_REGIONS_AF

Added in API level 21

static val CONTROL_MAX_REGIONS_AF: CameraCharacteristics.Key<Int!>

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

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

Range of valid values:
Value will be >= 0. For FULL-capability devices, this value will be >= 1.

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AF_REGIONS

CONTROL_MAX_REGIONS_AWB

Added in API level 21

static val CONTROL_MAX_REGIONS_AWB: CameraCharacteristics.Key<Int!>

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

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

Range of valid values:
Value will be >= 0.

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_AWB_REGIONS

CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE

Added in API level 24

static val CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE: CameraCharacteristics.Key<Range<Int!>!>

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

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

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

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

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_POST_RAW_SENSITIVITY_BOOST
• android.hardware.camera2.CaptureRequest#SENSOR_SENSITIVITY

CONTROL_ZOOM_RATIO_RANGE

Added in API level 30

static val CONTROL_ZOOM_RATIO_RANGE: CameraCharacteristics.Key<Range<Float!>!>

Minimum and maximum zoom ratios supported by this camera device.

If the camera device supports zoom-out from 1x zoom, minZoom will be less than 1.0, and setting android.control.zoomRatio to values less than 1.0 increases the camera's field of view.

Units: A pair of zoom ratio in floating-points: (minZoom, maxZoom)

Range of valid values:

maxZoom >= 1.0 >= minZoom

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_ZOOM_RATIO
• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL

DEPTH_DEPTH_IS_EXCLUSIVE

Added in API level 23

static val DEPTH_DEPTH_IS_EXCLUSIVE: CameraCharacteristics.Key<Boolean!>

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

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

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

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL

DISTORTION_CORRECTION_AVAILABLE_MODES

Added in API level 28

static val DISTORTION_CORRECTION_AVAILABLE_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#DISTORTION_CORRECTION_MODE

EDGE_AVAILABLE_EDGE_MODES

Added in API level 21

static val EDGE_AVAILABLE_EDGE_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CaptureRequest#EDGE_MODE
• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL

FLASH_INFO_AVAILABLE

Added in API level 21

static val FLASH_INFO_AVAILABLE: CameraCharacteristics.Key<Boolean!>

Whether this camera device has a flash unit.

Will be false if no flash is available.

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

FLASH_INFO_STRENGTH_DEFAULT_LEVEL

Added in API level 33

static val FLASH_INFO_STRENGTH_DEFAULT_LEVEL: CameraCharacteristics.Key<Int!>

Default flashlight brightness level to be set via android.hardware.camera2.CameraManager#turnOnTorchWithStrengthLevel.

If flash unit is available this will be greater than or equal to 1 and less or equal to android.flash.info.strengthMaximumLevel.

Setting flashlight brightness above the default level (i.e.android.flash.info.strengthDefaultLevel) may make the device more likely to reach thermal throttling conditions and slow down, or drain the battery quicker than normal. To minimize such issues, it is recommended to start the flashlight at this default brightness until a user explicitly requests a brighter level. Note that the value for this key will be null for devices with no flash unit. The default level should always be > 0.

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#FLASH_INFO_STRENGTH_DEFAULT_LEVEL
• android.hardware.camera2.CameraCharacteristics#FLASH_INFO_STRENGTH_MAXIMUM_LEVEL

FLASH_INFO_STRENGTH_MAXIMUM_LEVEL

Added in API level 33

static val FLASH_INFO_STRENGTH_MAXIMUM_LEVEL: CameraCharacteristics.Key<Int!>

Maximum flashlight brightness level.

If this value is greater than 1, then the device supports controlling the flashlight brightness level via android.hardware.camera2.CameraManager#turnOnTorchWithStrengthLevel. If this value is equal to 1, flashlight brightness control is not supported. The value for this key will be null for devices with no flash unit.

The maximum value is guaranteed to be safe to use for an indefinite duration in terms of device flashlight lifespan, but may be too bright for comfort for many use cases. Use the default torch brightness value to avoid problems with an over-bright flashlight.

Optional - The value for this key may be null on some devices.

FLASH_SINGLE_STRENGTH_DEFAULT_LEVEL

Added in API level 35

static val FLASH_SINGLE_STRENGTH_DEFAULT_LEVEL: CameraCharacteristics.Key<Int!>

Default flash brightness level for manual flash control in SINGLE mode.

If flash unit is available this will be greater than or equal to 1 and less or equal to android.flash.singleStrengthMaxLevel. Note for devices that do not support the manual flash strength control feature, this level will always be equal to 1.

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#FLASH_SINGLE_STRENGTH_MAX_LEVEL

FLASH_SINGLE_STRENGTH_MAX_LEVEL

Added in API level 35

static val FLASH_SINGLE_STRENGTH_MAX_LEVEL: CameraCharacteristics.Key<Int!>

Maximum flash brightness level for manual flash control in SINGLE mode.

Maximum flash brightness level in camera capture mode and android.flash.mode set to SINGLE. Value will be > 1 if the manual flash strength control feature is supported, otherwise the value will be equal to 1. Note that this level is just a number of supported levels (the granularity of control). There is no actual physical power units tied to this level.

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#FLASH_MODE

FLASH_TORCH_STRENGTH_DEFAULT_LEVEL

Added in API level 35

static val FLASH_TORCH_STRENGTH_DEFAULT_LEVEL: CameraCharacteristics.Key<Int!>

Default flash brightness level for manual flash control in TORCH mode

If flash unit is available this will be greater than or equal to 1 and less or equal to android.flash.torchStrengthMaxLevel. Note for the devices that do not support the manual flash strength control feature, this level will always be equal to 1.

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#FLASH_TORCH_STRENGTH_MAX_LEVEL

FLASH_TORCH_STRENGTH_MAX_LEVEL

Added in API level 35

static val FLASH_TORCH_STRENGTH_MAX_LEVEL: CameraCharacteristics.Key<Int!>

Maximum flash brightness level for manual flash control in TORCH mode

Maximum flash brightness level in camera capture mode and android.flash.mode set to TORCH. Value will be > 1 if the manual flash strength control feature is supported, otherwise the value will be equal to 1.

Note that this level is just a number of supported levels(the granularity of control). There is no actual physical power units tied to this level. There is no relation between android.flash.torchStrengthMaxLevel and android.flash.singleStrengthMaxLevel i.e. the ratio of android.flash.torchStrengthMaxLevel:android.flash.singleStrengthMaxLevel is not guaranteed to be the ratio of actual brightness.

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#FLASH_MODE
• android.hardware.camera2.CameraCharacteristics#FLASH_SINGLE_STRENGTH_MAX_LEVEL
• android.hardware.camera2.CameraCharacteristics#FLASH_TORCH_STRENGTH_MAX_LEVEL

HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES

Added in API level 21

static val HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES: CameraCharacteristics.Key<IntArray!>

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

FULL mode camera devices will always support FAST.

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

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#HOT_PIXEL_MODE

INFO_DEVICE_STATE_SENSOR_ORIENTATION_MAP

Added in API level 32

static val INFO_DEVICE_STATE_SENSOR_ORIENTATION_MAP: CameraCharacteristics.Key<DeviceStateSensorOrientationMap!>

This lists the mapping between a device folding state and specific camera sensor orientation for logical cameras on a foldable device.

Logical cameras on foldable devices can support sensors with different orientation values. The orientation value may need to change depending on the specific folding state. Information about the mapping between the device folding state and the sensor orientation can be obtained in android.hardware.camera2.params.DeviceStateSensorOrientationMap. Device state orientation maps are optional and maybe present on devices that support android.scaler.rotateAndCrop.

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#SCALER_ROTATE_AND_CROP

INFO_SESSION_CONFIGURATION_QUERY_VERSION

Added in API level 35

static val INFO_SESSION_CONFIGURATION_QUERY_VERSION: CameraCharacteristics.Key<Int!>

The version of the session configuration query android.hardware.camera2.CameraDevice.CameraDeviceSetup#isSessionConfigurationSupported and android.hardware.camera2.CameraDevice.CameraDeviceSetup#getSessionCharacteristics APIs.

The possible values in this key correspond to the values defined in android.os.Build.VERSION_CODES. Each version defines a set of feature combinations the camera device must reliably report whether they are supported via android.hardware.camera2.CameraDevice.CameraDeviceSetup#isSessionConfigurationSupported. It also defines the set of session specific keys in CameraCharacteristics when returned from android.hardware.camera2.CameraDevice.CameraDeviceSetup#getSessionCharacteristics. The version is always less or equal to android.os.Build.VERSION.SDK_INT.

If set to UPSIDE_DOWN_CAKE, this camera device doesn't support the android.hardware.camera2.CameraDevice.CameraDeviceSetup API. Trying to create a CameraDeviceSetup instance throws an UnsupportedOperationException.

From VANILLA_ICE_CREAM onwards, the camera compliance tests verify a set of commonly used SessionConfigurations to ensure that the outputs of android.hardware.camera2.CameraDevice.CameraDeviceSetup#isSessionConfigurationSupported and android.hardware.camera2.CameraDevice.CameraDeviceSetup#getSessionCharacteristics are accurate. The application is encouraged to use these SessionConfigurations when turning on multiple features at the same time.

When set to VANILLA_ICE_CREAM, the combinations of the following configurations are verified by the compliance tests:

• A set of commonly used stream combinations:

  Target 1	Size	Target 2	Size
  PRIV	S1080P
  PRIV	S720P
  PRIV	S1080P	JPEG/JPEG_R	MAXIMUM_16_9
  PRIV	S1080P	JPEG/JPEG_R	UHD
  PRIV	S1080P	JPEG/JPEG_R	S1440P
  PRIV	S1080P	JPEG/JPEG_R	S1080P
  PRIV	S1080P	PRIV	UHD
  PRIV	S720P	JPEG/JPEG_R	MAXIMUM_16_9
  PRIV	S720P	JPEG/JPEG_R	UHD
  PRIV	S720P	JPEG/JPEG_R	S1080P
  PRIV	XVGA	JPEG/JPEG_R	MAXIMUM_4_3
  PRIV	S1080P_4_3	JPEG/JPEG_R	MAXIMUM_4_3

  • MAXIMUM_4_3 refers to the camera device's maximum output resolution with 4:3 aspect ratio for that format from StreamConfigurationMap#getOutputSizes.
  • MAXIMUM_16_9 is the maximum output resolution with 16:9 aspect ratio.
  • S1440P refers to 2560x1440 (16:9).
  • S1080P refers to 1920x1080 (16:9).
  • S720P refers to 1280x720 (16:9).
  • UHD refers to 3840x2160 (16:9).
  • XVGA refers to 1024x768 (4:3).
  • S1080P_43 refers to 1440x1080 (4:3).

• VIDEO_STABILIZATION_MODE: {OFF, PREVIEW}

• AE_TARGET_FPS_RANGE: { {*, 30}, {*, 60} }

• DYNAMIC_RANGE_PROFILE: {STANDARD, HLG10}

All of the above configurations can be set up with a SessionConfiguration. The list of OutputConfiguration contains the stream configurations and DYNAMIC_RANGE_PROFILE, and the AE_TARGET_FPS_RANGE and VIDEO_STABILIZATION_MODE are set as session parameters.

When set to BAKLAVA, the additional stream combinations below are verified by the compliance tests:

Target 1	Size	Target 2	Size
PRIV	S1080P	PRIV	S1080P
PRIV	S1080P	PRIV	S1440P

This key is available on all devices.

INFO_SUPPORTED_HARDWARE_LEVEL

Added in API level 21

static val INFO_SUPPORTED_HARDWARE_LEVEL: CameraCharacteristics.Key<Int!>

Generally classifies the overall set of the camera device functionality.

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

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

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

At a high level, the levels are:

• LEGACY devices operate in a backwards-compatibility mode for older Android devices, and have very limited capabilities.
• LIMITED devices represent the baseline feature set, and may also include additional capabilities that are subsets of FULL.
• FULL devices additionally support per-frame manual control of sensor, flash, lens and post-processing settings, and image capture at a high rate.
• LEVEL_3 devices additionally support YUV reprocessing and RAW image capture, along with additional output stream configurations.
• EXTERNAL devices are similar to LIMITED devices with exceptions like some sensor or lens information not reported or less stable framerates.

See the individual level enums for full descriptions of the supported capabilities. The android.request.availableCapabilities entry describes the device's capabilities at a finer-grain level, if needed. In addition, many controls have their available settings or ranges defined in individual entries from android.hardware.camera2.CameraCharacteristics.

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

• Calibrated timestamps (android.sensor.info.timestampSource == REALTIME)
• Precision lens control (android.lens.info.focusDistanceCalibration == CALIBRATED)
• Face detection (android.statistics.info.availableFaceDetectModes)
• Optical or electrical image stabilization (android.lens.info.availableOpticalStabilization, android.control.availableVideoStabilizationModes)

Possible values:

• LIMITED
• FULL
• LEGACY
• 3
• EXTERNAL

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES
• android.hardware.camera2.CameraCharacteristics#LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
• android.hardware.camera2.CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
• android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_TIMESTAMP_SOURCE
• android.hardware.camera2.CameraCharacteristics#STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
• #INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED
• #INFO_SUPPORTED_HARDWARE_LEVEL_FULL
• #INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY
• #INFO_SUPPORTED_HARDWARE_LEVEL_3
• #INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL

INFO_VERSION

Added in API level 28

static val INFO_VERSION: CameraCharacteristics.Key<String!>

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

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

Optional - The value for this key may be null on some devices.

JPEG_AVAILABLE_THUMBNAIL_SIZES

Added in API level 21

static val JPEG_AVAILABLE_THUMBNAIL_SIZES: CameraCharacteristics.Key<Array<Size!>!>

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

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

Below conditions will be satisfied for this size list:

• The sizes will be sorted by increasing pixel area (width x height). If several resolutions have the same area, they will be sorted by increasing width.
• The aspect ratio of the largest thumbnail size will be same as the aspect ratio of largest JPEG output size in android.scaler.availableStreamConfigurations. The largest size is defined as the size that has the largest pixel area in a given size list.
• Each output JPEG size in android.scaler.availableStreamConfigurations will have at least one corresponding size that has the same aspect ratio in availableThumbnailSizes, and vice versa.
• All non-(0, 0) sizes will have non-zero widths and heights.

This list is also used as supported thumbnail sizes for HEIC image format capture.

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#JPEG_THUMBNAIL_SIZE

LENS_DISTORTION

Added in API level 28

static val LENS_DISTORTION: CameraCharacteristics.Key<FloatArray!>

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

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

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

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

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

<code> correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)
  </code>

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

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

The distortion model used is the Brown-Conrady model.

Units: Unitless coefficients.

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
• android.hardware.camera2.CameraCharacteristics#LENS_RADIAL_DISTORTION

LENS_DISTORTION_MAXIMUM_RESOLUTION

Added in API level 31

static val LENS_DISTORTION_MAXIMUM_RESOLUTION: CameraCharacteristics.Key<FloatArray!>

The correction coefficients to correct for this camera device's radial and tangential lens distortion for a CaptureRequest with android.sensor.pixelMode set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.

Analogous to android.lens.distortion, when android.sensor.pixelMode is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.

Units: Unitless coefficients.

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#LENS_DISTORTION
• android.hardware.camera2.CaptureRequest#SENSOR_PIXEL_MODE

LENS_FACING

Added in API level 21

static val LENS_FACING: CameraCharacteristics.Key<Int!>

Direction the camera faces relative to device screen.

Possible values:

• FRONT
• BACK
• EXTERNAL

This key is available on all devices.

See Also

• #LENS_FACING_FRONT
• #LENS_FACING_BACK
• #LENS_FACING_EXTERNAL

LENS_INFO_AVAILABLE_APERTURES

Added in API level 21

static val LENS_INFO_AVAILABLE_APERTURES: CameraCharacteristics.Key<FloatArray!>

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

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

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

Units: The aperture f-number

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#LENS_APERTURE

LENS_INFO_AVAILABLE_FILTER_DENSITIES

Added in API level 21

static val LENS_INFO_AVAILABLE_FILTER_DENSITIES: CameraCharacteristics.Key<FloatArray!>

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

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

Units: Exposure value (EV)

Range of valid values:

Values are >= 0

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#LENS_FILTER_DENSITY

LENS_INFO_AVAILABLE_FOCAL_LENGTHS

Added in API level 21

static val LENS_INFO_AVAILABLE_FOCAL_LENGTHS: CameraCharacteristics.Key<FloatArray!>

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

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

Units: Millimeters

Range of valid values:

Values are > 0

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#LENS_FOCAL_LENGTH

LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION

Added in API level 21

static val LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION: CameraCharacteristics.Key<IntArray!>

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

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

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

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#LENS_OPTICAL_STABILIZATION_MODE

LENS_INFO_FOCUS_DISTANCE_CALIBRATION

Added in API level 21

static val LENS_INFO_FOCUS_DISTANCE_CALIBRATION: CameraCharacteristics.Key<Int!>

The lens focus distance calibration quality.

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

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

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

Possible values:

• UNCALIBRATED
• APPROXIMATE
• CALIBRATED

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#LENS_FOCUS_DISTANCE
• android.hardware.camera2.CaptureResult#LENS_FOCUS_RANGE
• android.hardware.camera2.CameraCharacteristics#LENS_INFO_HYPERFOCAL_DISTANCE
• android.hardware.camera2.CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE
• #LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED
• #LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE
• #LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED

LENS_INFO_HYPERFOCAL_DISTANCE

Added in API level 21

static val LENS_INFO_HYPERFOCAL_DISTANCE: CameraCharacteristics.Key<Float!>

Hyperfocal distance for this lens.

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

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

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

Optional - The value for this key may be null on some devices.

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

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION
• android.hardware.camera2.CameraCharacteristics#LENS_INFO_MINIMUM_FOCUS_DISTANCE

LENS_INFO_MINIMUM_FOCUS_DISTANCE

Added in API level 21

static val LENS_INFO_MINIMUM_FOCUS_DISTANCE: CameraCharacteristics.Key<Float!>

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

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

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

Range of valid values:
>= 0

Optional - The value for this key may be null on some devices.

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

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CameraCharacteristics#LENS_INFO_FOCUS_DISTANCE_CALIBRATION

LENS_INTRINSIC_CALIBRATION

Added in API level 23

static val LENS_INTRINSIC_CALIBRATION: CameraCharacteristics.Key<FloatArray!>

The parameters for this camera device's intrinsic calibration.

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

<code>[f_x, f_y, c_x, c_y, s]
  </code>

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

These are typically used within a transformation matrix K:

<code>K = [ f_x,   s, c_x,
         0, f_y, c_y,
         0    0,   1 ]
  </code>

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

<code>P = [ K 0   * [ R -Rt
       0 1 ]      0 1 ]
  </code>

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

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

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

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

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

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

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

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#LENS_DISTORTION
• android.hardware.camera2.CameraCharacteristics#LENS_POSE_ROTATION
• android.hardware.camera2.CameraCharacteristics#LENS_POSE_TRANSLATION
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE

LENS_INTRINSIC_CALIBRATION_MAXIMUM_RESOLUTION

Added in API level 31

static val LENS_INTRINSIC_CALIBRATION_MAXIMUM_RESOLUTION: CameraCharacteristics.Key<FloatArray!>

The parameters for this camera device's intrinsic calibration when android.sensor.pixelMode is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.

Analogous to android.lens.intrinsicCalibration, when android.sensor.pixelMode is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.

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

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE_MAXIMUM_RESOLUTION
• android.hardware.camera2.CaptureRequest#SENSOR_PIXEL_MODE

LENS_POSE_REFERENCE

Added in API level 28

static val LENS_POSE_REFERENCE: CameraCharacteristics.Key<Int!>

The origin for android.lens.poseTranslation, and the accuracy of android.lens.poseTranslation and android.lens.poseRotation.

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

Possible values:

• PRIMARY_CAMERA
• GYROSCOPE
• UNDEFINED
• AUTOMOTIVE

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#LENS_POSE_ROTATION
• android.hardware.camera2.CameraCharacteristics#LENS_POSE_TRANSLATION
• #LENS_POSE_REFERENCE_PRIMARY_CAMERA
• #LENS_POSE_REFERENCE_GYROSCOPE
• #LENS_POSE_REFERENCE_UNDEFINED
• #LENS_POSE_REFERENCE_AUTOMOTIVE

LENS_POSE_ROTATION

Added in API level 23

static val LENS_POSE_ROTATION: CameraCharacteristics.Key<FloatArray!>

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

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

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

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

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

<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>

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

p' = Rp

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

If android.lens.poseReference is UNDEFINED, the quaternion rotation cannot be accurately represented by the camera device, and will be represented by default values matching its default facing.

Units: Quaternion coefficients

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#LENS_POSE_REFERENCE

LENS_POSE_TRANSLATION

Added in API level 23

static val LENS_POSE_TRANSLATION: CameraCharacteristics.Key<FloatArray!>

Position of the camera optical center.

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

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

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

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

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

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

When android.lens.poseReference is UNDEFINED, this position cannot be accurately represented by the camera device, and will be represented as (0, 0, 0).

When android.lens.poseReference is AUTOMOTIVE, then this position is relative to the origin of the automotive sensor coordinate system, which is at the center of the rear axle.

Units: Meters

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#LENS_DISTORTION
• android.hardware.camera2.CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
• android.hardware.camera2.CameraCharacteristics#LENS_POSE_REFERENCE
• android.hardware.camera2.CameraCharacteristics#LENS_POSE_ROTATION

LENS_RADIAL_DISTORTION

Added in API level 23
Deprecated in API level 28

static val LENS_RADIAL_DISTORTION: CameraCharacteristics.Key<FloatArray!>

Deprecated:

This field was inconsistently defined in terms of its normalization. Use android.lens.distortion instead.

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

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

<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>

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

<code> correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)
  </code>

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

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

The distortion model used is the Brown-Conrady model.

Units: Unitless coefficients.

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#LENS_INTRINSIC_CALIBRATION
• android.hardware.camera2.CameraCharacteristics#LENS_DISTORTION

LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE

Added in API level 28

static val LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE: CameraCharacteristics.Key<Int!>

The accuracy of frame timestamp synchronization between physical cameras

The accuracy of the frame timestamp synchronization determines the physical cameras' ability to start exposure at the same time. If the sensorSyncType is CALIBRATED, the physical camera sensors usually run in leader/follower mode where one sensor generates a timing signal for the other, so that their shutter time is synchronized. For APPROXIMATE sensorSyncType, the camera sensors usually run in leader/leader mode, where both sensors use their own timing generator, and there could be offset between their start of exposure.

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

This tag is only applicable if the logical camera device supports concurrent physical streams from different physical cameras.

Possible values:

• APPROXIMATE
• CALIBRATED

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• #LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_APPROXIMATE
• #LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_CALIBRATED

NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES

Added in API level 21

static val NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES: CameraCharacteristics.Key<IntArray!>

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

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

Camera devices that support YUV_REPROCESSING or PRIVATE_REPROCESSING will support ZERO_SHUTTER_LAG.

Legacy-capability camera devices will only support FAST mode.

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

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#NOISE_REDUCTION_MODE

REPROCESS_MAX_CAPTURE_STALL

Added in API level 23

static val REPROCESS_MAX_CAPTURE_STALL: CameraCharacteristics.Key<Int!>

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

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

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

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

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

Units: Number of frames.

Range of valid values:
<= 4

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES

REQUEST_AVAILABLE_CAPABILITIES

Added in API level 21

static val REQUEST_AVAILABLE_CAPABILITIES: CameraCharacteristics.Key<IntArray!>

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

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

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

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

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

• MANUAL_SENSOR
• MANUAL_POST_PROCESSING

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

Possible values:

• BACKWARD_COMPATIBLE
• MANUAL_SENSOR
• MANUAL_POST_PROCESSING
• RAW
• PRIVATE_REPROCESSING
• READ_SENSOR_SETTINGS
• BURST_CAPTURE
• YUV_REPROCESSING
• DEPTH_OUTPUT
• CONSTRAINED_HIGH_SPEED_VIDEO
• MOTION_TRACKING
• LOGICAL_MULTI_CAMERA
• MONOCHROME
• SECURE_IMAGE_DATA
• SYSTEM_CAMERA
• OFFLINE_PROCESSING
• ULTRA_HIGH_RESOLUTION_SENSOR
• REMOSAIC_REPROCESSING
• DYNAMIC_RANGE_TEN_BIT
• STREAM_USE_CASE
• COLOR_SPACE_PROFILES

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• #REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE
• #REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR
• #REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING
• #REQUEST_AVAILABLE_CAPABILITIES_RAW
• #REQUEST_AVAILABLE_CAPABILITIES_PRIVATE_REPROCESSING
• #REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS
• #REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE
• #REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING
• #REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT
• #REQUEST_AVAILABLE_CAPABILITIES_CONSTRAINED_HIGH_SPEED_VIDEO
• #REQUEST_AVAILABLE_CAPABILITIES_MOTION_TRACKING
• #REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA
• #REQUEST_AVAILABLE_CAPABILITIES_MONOCHROME
• #REQUEST_AVAILABLE_CAPABILITIES_SECURE_IMAGE_DATA
• #REQUEST_AVAILABLE_CAPABILITIES_SYSTEM_CAMERA
• #REQUEST_AVAILABLE_CAPABILITIES_OFFLINE_PROCESSING
• #REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR
• #REQUEST_AVAILABLE_CAPABILITIES_REMOSAIC_REPROCESSING
• #REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT
• #REQUEST_AVAILABLE_CAPABILITIES_STREAM_USE_CASE
• #REQUEST_AVAILABLE_CAPABILITIES_COLOR_SPACE_PROFILES

REQUEST_AVAILABLE_COLOR_SPACE_PROFILES

Added in API level 34

static val REQUEST_AVAILABLE_COLOR_SPACE_PROFILES: CameraCharacteristics.Key<ColorSpaceProfiles!>

An interface for querying the color space profiles supported by a camera device.

A color space profile is a combination of a color space, an image format, and a dynamic range profile. Camera clients can retrieve the list of supported color spaces by calling android.hardware.camera2.params.ColorSpaceProfiles#getSupportedColorSpaces or android.hardware.camera2.params.ColorSpaceProfiles#getSupportedColorSpacesForDynamicRange. If a camera does not support the android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT capability, the dynamic range profile will always be android.hardware.camera2.params.DynamicRangeProfiles#STANDARD. Color space capabilities are queried in combination with an android.graphics.ImageFormat. If a camera client wants to know the general color space capabilities of a camera device regardless of image format, it can specify android.graphics.ImageFormat#UNKNOWN. The color space for a session can be configured by setting the SessionConfiguration color space via android.hardware.camera2.params.SessionConfiguration#setColorSpace.

Optional - The value for this key may be null on some devices.

REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES

Added in API level 33

static val REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES: CameraCharacteristics.Key<DynamicRangeProfiles!>

Devices supporting the 10-bit output capability android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT must list their supported dynamic range profiles along with capture request constraints for specific profile combinations.

Camera clients can retrieve the list of supported 10-bit dynamic range profiles by calling android.hardware.camera2.params.DynamicRangeProfiles#getSupportedProfiles. Any of them can be configured by setting OutputConfiguration dynamic range profile in android.hardware.camera2.params.OutputConfiguration#setDynamicRangeProfile. Clients can also check if there are any constraints that limit the combination of supported profiles that can be referenced within a single capture request by calling android.hardware.camera2.params.DynamicRangeProfiles#getProfileCaptureRequestConstraints.

Optional - The value for this key may be null on some devices.

REQUEST_MAX_NUM_INPUT_STREAMS

Added in API level 23

static val REQUEST_MAX_NUM_INPUT_STREAMS: CameraCharacteristics.Key<Int!>

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

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

The image format for a input stream can be any supported format returned by android.hardware.camera2.params.StreamConfigurationMap#getInputFormats. When using an input stream, there must be at least one output stream configured to to receive the reprocessed images.

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

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

Range of valid values:

0 or 1.

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL

REQUEST_MAX_NUM_OUTPUT_PROC

Added in API level 21

static val REQUEST_MAX_NUM_OUTPUT_PROC: CameraCharacteristics.Key<Int!>

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

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

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

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

• YUV_420_888
• NV21
• YV12
• Implementation-defined formats, i.e. android.hardware.camera2.params.StreamConfigurationMap#isOutputSupportedFor(Class)
• Y8

For full guarantees, query android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration with a processed format -- it will return 0 for a non-stalling stream.

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

Range of valid values:

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

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP

REQUEST_MAX_NUM_OUTPUT_PROC_STALLING

Added in API level 21

static val REQUEST_MAX_NUM_OUTPUT_PROC_STALLING: CameraCharacteristics.Key<Int!>

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

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

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

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

For full guarantees, query android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration with a processed format -- it will return a non-0 value for a stalling stream.

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

Range of valid values:

>= 1

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP

REQUEST_MAX_NUM_OUTPUT_RAW

Added in API level 21

static val REQUEST_MAX_NUM_OUTPUT_RAW: CameraCharacteristics.Key<Int!>

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

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

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

In particular, a RAW format is typically one of:

• RAW_SENSOR
• RAW10
• RAW12

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

Range of valid values:

>= 0

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP

REQUEST_PARTIAL_RESULT_COUNT

Added in API level 21

static val REQUEST_PARTIAL_RESULT_COUNT: CameraCharacteristics.Key<Int!>

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

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

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

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

Range of valid values:
>= 1

Optional - The value for this key may be null on some devices.

REQUEST_PIPELINE_MAX_DEPTH

Added in API level 21

static val REQUEST_PIPELINE_MAX_DEPTH: CameraCharacteristics.Key<Byte!>

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

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

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

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

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureResult#REQUEST_PIPELINE_DEPTH

REQUEST_RECOMMENDED_TEN_BIT_DYNAMIC_RANGE_PROFILE

Added in API level 33

static val REQUEST_RECOMMENDED_TEN_BIT_DYNAMIC_RANGE_PROFILE: CameraCharacteristics.Key<Long!>

Recommended 10-bit dynamic range profile.

Devices supporting the 10-bit output capability android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT must list a 10-bit supported dynamic range profile that is expected to perform optimally in terms of image quality, power and performance. The value advertised can be used as a hint by camera clients when configuring the dynamic range profile when calling android.hardware.camera2.params.OutputConfiguration#setDynamicRangeProfile.

Optional - The value for this key may be null on some devices.

SCALER_AVAILABLE_MAX_DIGITAL_ZOOM

Added in API level 21

static val SCALER_AVAILABLE_MAX_DIGITAL_ZOOM: CameraCharacteristics.Key<Float!>

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

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

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

Starting from API level 30, when using android.control.zoomRatio to zoom in or out, the application must use android.control.zoomRatioRange to query both the minimum and maximum zoom ratio.

Units: Zoom scale factor

Range of valid values:
>=1

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_ZOOM_RATIO
• android.hardware.camera2.CameraCharacteristics#CONTROL_ZOOM_RATIO_RANGE
• android.hardware.camera2.CaptureRequest#SCALER_CROP_REGION

SCALER_AVAILABLE_ROTATE_AND_CROP_MODES

Added in API level 31

static val SCALER_AVAILABLE_ROTATE_AND_CROP_MODES: CameraCharacteristics.Key<IntArray!>

List of rotate-and-crop modes for android.scaler.rotateAndCrop that are supported by this camera device.

This entry lists the valid modes for android.scaler.rotateAndCrop for this camera device.

Starting with API level 30, all devices will list at least ROTATE_AND_CROP_NONE. Devices with support for rotate-and-crop will additionally list at least ROTATE_AND_CROP_AUTO and ROTATE_AND_CROP_90.

Range of valid values:
Any value listed in android.scaler.rotateAndCrop

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#SCALER_ROTATE_AND_CROP

SCALER_AVAILABLE_STREAM_USE_CASES

Added in API level 33

static val SCALER_AVAILABLE_STREAM_USE_CASES: CameraCharacteristics.Key<LongArray!>

The stream use cases supported by this camera device.

The stream use case indicates the purpose of a particular camera stream from the end-user perspective. Some examples of camera use cases are: preview stream for live viewfinder shown to the user, still capture for generating high quality photo capture, video record for encoding the camera output for the purpose of future playback, and video call for live realtime video conferencing.

With this flag, the camera device can optimize the image processing pipeline parameters, such as tuning, sensor mode, and ISP settings, independent of the properties of the immediate camera output surface. For example, if the output surface is a SurfaceTexture, the stream use case flag can be used to indicate whether the camera frames eventually go to display, video encoder, still image capture, or all of them combined.

The application sets the use case of a camera stream by calling android.hardware.camera2.params.OutputConfiguration#setStreamUseCase.

A camera device with android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_STREAM_USE_CASE capability must support the following stream use cases:

• DEFAULT
• PREVIEW
• STILL_CAPTURE
• VIDEO_RECORD
• PREVIEW_VIDEO_STILL
• VIDEO_CALL

The guaranteed stream combinations related to stream use case for a camera device with android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_STREAM_USE_CASE capability is documented in the camera device guideline. The application is strongly recommended to use one of the guaranteed stream combinations. If the application creates a session with a stream combination not in the guaranteed list, or with mixed DEFAULT and non-DEFAULT use cases within the same session, the camera device may ignore some stream use cases due to hardware constraints and implementation details.

For stream combinations not covered by the stream use case mandatory lists, such as reprocessable session, constrained high speed session, or RAW stream combinations, the application should leave stream use cases within the session as DEFAULT.

Possible values:

• DEFAULT
• PREVIEW
• STILL_CAPTURE
• VIDEO_RECORD
• PREVIEW_VIDEO_STILL
• VIDEO_CALL
• CROPPED_RAW

Optional - The value for this key may be null on some devices.

See Also

• #SCALER_AVAILABLE_STREAM_USE_CASES_DEFAULT
• #SCALER_AVAILABLE_STREAM_USE_CASES_PREVIEW
• #SCALER_AVAILABLE_STREAM_USE_CASES_STILL_CAPTURE
• #SCALER_AVAILABLE_STREAM_USE_CASES_VIDEO_RECORD
• #SCALER_AVAILABLE_STREAM_USE_CASES_PREVIEW_VIDEO_STILL
• #SCALER_AVAILABLE_STREAM_USE_CASES_VIDEO_CALL
• #SCALER_AVAILABLE_STREAM_USE_CASES_CROPPED_RAW

SCALER_CROPPING_TYPE

Added in API level 21

static val SCALER_CROPPING_TYPE: CameraCharacteristics.Key<Int!>

The crop type that this camera device supports.

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

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

Starting from API level 30,

• If the camera device supports FREEFORM cropping, in order to do FREEFORM cropping, the application must set android.control.zoomRatio to 1.0, and use android.scaler.cropRegion for zoom.
• To do CENTER_ONLY zoom, the application has below 2 options:
  1. Set android.control.zoomRatio to 1.0; adjust zoom by android.scaler.cropRegion.
  2. Adjust zoom by android.control.zoomRatio; use android.scaler.cropRegion to crop the field of view vertically (letterboxing) or horizontally (pillarboxing), but not windowboxing.
• Setting android.control.zoomRatio to values different than 1.0 and android.scaler.cropRegion to be windowboxing at the same time are not supported. In this case, the camera framework will override the android.scaler.cropRegion to be the active array.

LEGACY capability devices will only support CENTER_ONLY cropping.

Possible values:

• CENTER_ONLY
• FREEFORM

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#CONTROL_ZOOM_RATIO
• android.hardware.camera2.CaptureRequest#SCALER_CROP_REGION
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
• #SCALER_CROPPING_TYPE_CENTER_ONLY
• #SCALER_CROPPING_TYPE_FREEFORM

SCALER_DEFAULT_SECURE_IMAGE_SIZE

Added in API level 31

static val SCALER_DEFAULT_SECURE_IMAGE_SIZE: CameraCharacteristics.Key<Size!>

Default YUV/PRIVATE size to use for requesting secure image buffers.

This entry lists the default size supported in the secure camera mode. This entry is optional on devices support the SECURE_IMAGE_DATA capability. This entry will be null if the camera device does not list SECURE_IMAGE_DATA capability.

When the key is present, only a PRIVATE/YUV output of the specified size is guaranteed to be supported by the camera HAL in the secure camera mode. Any other format or resolutions might not be supported. Use CameraDevice.isSessionConfigurationSupported API to query if a secure session configuration is supported if the device supports this API.

If this key returns null on a device with SECURE_IMAGE_DATA capability, the application can assume all output sizes listed in the android.hardware.camera2.params.StreamConfigurationMap are supported.

Units: Pixels

Optional - The value for this key may be null on some devices.

SCALER_MANDATORY_CONCURRENT_STREAM_COMBINATIONS

Added in API level 30

static val SCALER_MANDATORY_CONCURRENT_STREAM_COMBINATIONS: CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>

An array of mandatory concurrent stream combinations. This is an app-readable conversion of the concurrent mandatory stream combination tables.

The array of combinations is generated according to the documented guideline for each device which has its Id present in the set returned by android.hardware.camera2.CameraManager#getConcurrentCameraIds. Clients can use the array as a quick reference to find an appropriate camera stream combination. The mandatory stream combination array will be null in case the device is not a part of at least one set of combinations returned by android.hardware.camera2.CameraManager#getConcurrentCameraIds.

Optional - The value for this key may be null on some devices.

SCALER_MANDATORY_MAXIMUM_RESOLUTION_STREAM_COMBINATIONS

Added in API level 31

static val SCALER_MANDATORY_MAXIMUM_RESOLUTION_STREAM_COMBINATIONS: CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>

An array of mandatory stream combinations which are applicable when android.hardware.camera2.CaptureRequest has android.sensor.pixelMode set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION. This is an app-readable conversion of the maximum resolution mandatory stream combination tables.

The array of combinations is generated according to the documented guideline for each device which has the android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR capability. Clients can use the array as a quick reference to find an appropriate camera stream combination. The mandatory stream combination array will be null in case the device is not an android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR device.

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#SENSOR_PIXEL_MODE

SCALER_MANDATORY_PREVIEW_STABILIZATION_OUTPUT_STREAM_COMBINATIONS

Added in API level 33

static val SCALER_MANDATORY_PREVIEW_STABILIZATION_OUTPUT_STREAM_COMBINATIONS: CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>

An array of mandatory stream combinations which are applicable when device lists PREVIEW_STABILIZATION in android.control.availableVideoStabilizationModes. This is an app-readable conversion of the preview stabilization mandatory stream combination tables.

The array of combinations is generated according to the documented guideline for each device which supports PREVIEW_STABILIZATION Clients can use the array as a quick reference to find an appropriate camera stream combination. The mandatory stream combination array will be null in case the device does not list PREVIEW_STABILIZATION in android.control.availableVideoStabilizationModes.

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES

SCALER_MANDATORY_STREAM_COMBINATIONS

Added in API level 29

static val SCALER_MANDATORY_STREAM_COMBINATIONS: CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>

An array of mandatory stream combinations generated according to the camera device android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL and android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES. This is an app-readable conversion of the mandatory stream combination tables.

The array of combinations is generated according to the documented guideline. based on specific device level and capabilities. Clients can use the array as a quick reference to find an appropriate camera stream combination. As per documentation, the stream combinations with given PREVIEW, RECORD and MAXIMUM resolutions and anything smaller from the list given by android.hardware.camera2.params.StreamConfigurationMap#getOutputSizes are guaranteed to work. For a physical camera not independently exposed in android.hardware.camera2.CameraManager#getCameraIdList, the mandatory stream combinations for that physical camera Id are also generated, so that the application can configure them as physical streams via the logical camera. The mandatory stream combination array will be null in case the device is not backward compatible.

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL

SCALER_MANDATORY_TEN_BIT_OUTPUT_STREAM_COMBINATIONS

Added in API level 33

static val SCALER_MANDATORY_TEN_BIT_OUTPUT_STREAM_COMBINATIONS: CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>

An array of mandatory stream combinations which are applicable when device support the 10-bit output capability android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT This is an app-readable conversion of the 10 bit output mandatory stream combination tables.

The array of combinations is generated according to the documented guideline for each device which has the android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT capability. Clients can use the array as a quick reference to find an appropriate camera stream combination. The mandatory stream combination array will be null in case the device is not an android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT device.

Optional - The value for this key may be null on some devices.

SCALER_MANDATORY_USE_CASE_STREAM_COMBINATIONS

Added in API level 33

static val SCALER_MANDATORY_USE_CASE_STREAM_COMBINATIONS: CameraCharacteristics.Key<Array<MandatoryStreamCombination!>!>

An array of mandatory stream combinations with stream use cases. This is an app-readable conversion of the mandatory stream combination tables with each stream's use case being set.

The array of combinations is generated according to the documented guildeline for a camera device with android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_STREAM_USE_CASE capability. The mandatory stream combination array will be null in case the device doesn't have android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES_STREAM_USE_CASE capability.

Optional - The value for this key may be null on some devices.

SCALER_MULTI_RESOLUTION_STREAM_CONFIGURATION_MAP

Added in API level 31

static val SCALER_MULTI_RESOLUTION_STREAM_CONFIGURATION_MAP: CameraCharacteristics.Key<MultiResolutionStreamConfigurationMap!>

The multi-resolution stream configurations supported by this logical camera or ultra high resolution sensor camera device.

Multi-resolution streams can be used by a LOGICAL_MULTI_CAMERA or an ULTRA_HIGH_RESOLUTION_SENSOR camera where the images sent or received can vary in resolution per frame. This is useful in cases where the camera device's effective full resolution changes depending on factors such as the current zoom level, lighting condition, focus distance, or pixel mode.

• For a logical multi-camera implementing optical zoom, at different zoom level, a different physical camera may be active, resulting in different full-resolution image sizes.
• For an ultra high resolution camera, depending on whether the camera operates in default mode, or maximum resolution mode, the output full-size images may be of either binned resolution or maximum resolution.

To use multi-resolution output streams, the supported formats can be queried by android.hardware.camera2.params.MultiResolutionStreamConfigurationMap#getOutputFormats. A android.hardware.camera2.MultiResolutionImageReader can then be created for a supported format with the MultiResolutionStreamInfo group queried by android.hardware.camera2.params.MultiResolutionStreamConfigurationMap#getOutputInfo.

If a camera device supports multi-resolution output streams for a particular format, for each of its mandatory stream combinations, the camera device will support using a MultiResolutionImageReader for the MAXIMUM stream of supported formats. Refer to the table for additional details.

To use multi-resolution input streams, the supported formats can be queried by android.hardware.camera2.params.MultiResolutionStreamConfigurationMap#getInputFormats. A reprocessable CameraCaptureSession can then be created using an InputConfiguration constructed with the input MultiResolutionStreamInfo group, queried by android.hardware.camera2.params.MultiResolutionStreamConfigurationMap#getInputInfo.

If a camera device supports multi-resolution YUV input and multi-resolution YUV output, or multi-resolution PRIVATE input and multi-resolution PRIVATE output, JPEG and YUV are guaranteed to be supported multi-resolution output stream formats. Refer to the table for details about the additional mandatory stream combinations in this case.

Optional - The value for this key may be null on some devices.

SCALER_STREAM_CONFIGURATION_MAP

Added in API level 21

static val SCALER_STREAM_CONFIGURATION_MAP: CameraCharacteristics.Key<StreamConfigurationMap!>

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

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

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

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

For applications targeting SDK version older than 31, the following table describes the minimum required output stream configurations based on the hardware level (android.info.supportedHardwareLevel):

Format	Size	Hardware Level	Notes
android.graphics.ImageFormat#JPEG	android.sensor.info.activeArraySize (*1)	Any
android.graphics.ImageFormat#JPEG	1920x1080 (1080p)	Any	if 1080p <= activeArraySize
android.graphics.ImageFormat#JPEG	1280x720 (720p)	Any	if 720p <= activeArraySize
android.graphics.ImageFormat#JPEG	640x480 (480p)	Any	if 480p <= activeArraySize
android.graphics.ImageFormat#JPEG	320x240 (240p)	Any	if 240p <= activeArraySize
android.graphics.ImageFormat#YUV_420_888	all output sizes available for JPEG	FULL
android.graphics.ImageFormat#YUV_420_888	all output sizes available for JPEG, up to the maximum video size	LIMITED
android.graphics.ImageFormat#PRIVATE	same as YUV_420_888	Any

For applications targeting SDK version 31 or newer, if the mobile device declares to be media performance class 12 or higher by setting android.os.Build.VERSION#MEDIA_PERFORMANCE_CLASS to be 31 or larger, the primary camera devices (first rear/front camera in the camera ID list) will not support JPEG sizes smaller than 1080p. If the application configures a JPEG stream smaller than 1080p, the camera device will round up the JPEG image size to at least 1080p. The requirements for IMPLEMENTATION_DEFINED and YUV_420_888 stay the same. This new minimum required output stream configurations are illustrated by the table below:

Format	Size	Hardware Level	Notes
android.graphics.ImageFormat#JPEG	android.sensor.info.activeArraySize (*1)	Any
android.graphics.ImageFormat#JPEG	1920x1080 (1080p)	Any	if 1080p <= activeArraySize
android.graphics.ImageFormat#YUV_420_888	android.sensor.info.activeArraySize	FULL
android.graphics.ImageFormat#YUV_420_888	1920x1080 (1080p)	FULL	if 1080p <= activeArraySize
android.graphics.ImageFormat#YUV_420_888	1280x720 (720)	FULL	if 720p <= activeArraySize
android.graphics.ImageFormat#YUV_420_888	640x480 (480p)	FULL	if 480p <= activeArraySize
android.graphics.ImageFormat#YUV_420_888	320x240 (240p)	FULL	if 240p <= activeArraySize
android.graphics.ImageFormat#YUV_420_888	all output sizes available for FULL hardware level, up to the maximum video size	LIMITED
android.graphics.ImageFormat#PRIVATE	same as YUV_420_888	Any

For applications targeting SDK version 31 or newer, if the mobile device doesn't declare to be media performance class 12 or better by setting android.os.Build.VERSION#MEDIA_PERFORMANCE_CLASS to be 31 or larger, or if the camera device isn't a primary rear/front camera, the minimum required output stream configurations are the same as for applications targeting SDK version older than 31.

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

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

• The HAL may choose the aspect ratio of each Jpeg size to be one of well known ones (e.g. 4:3, 16:9, 3:2 etc.). If the sensor maximum resolution (defined by android.sensor.info.activeArraySize) has an aspect ratio other than these, it does not have to be included in the supported JPEG sizes.
• Some hardware JPEG encoders may have pixel boundary alignment requirements, such as the dimensions being a multiple of 16. Therefore, the maximum JPEG size may be smaller than sensor maximum resolution. However, the largest JPEG size will be as close as possible to the sensor maximum resolution given above constraints. It is required that after aspect ratio adjustments, additional size reduction due to other issues must be less than 3% in area. For example, if the sensor maximum resolution is 3280x2464, if the maximum JPEG size has aspect ratio 4:3, and the JPEG encoder alignment requirement is 16, the maximum JPEG size will be 3264x2448.

Exception on 176x144 (QCIF) resolution: camera devices usually have a fixed capability on downscaling from larger resolution to smaller ones, and the QCIF resolution can sometimes not be fully supported due to this limitation on devices with high-resolution image sensors. Therefore, trying to configure a QCIF resolution stream together with any other stream larger than 1920x1080 resolution (either width or height) might not be supported, and capture session creation will fail if it is not.

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CameraCharacteristics#REQUEST_AVAILABLE_CAPABILITIES
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE

SCALER_STREAM_CONFIGURATION_MAP_MAXIMUM_RESOLUTION

Added in API level 31

static val SCALER_STREAM_CONFIGURATION_MAP_MAXIMUM_RESOLUTION: CameraCharacteristics.Key<StreamConfigurationMap!>

The available stream configurations that this camera device supports when given a CaptureRequest with android.sensor.pixelMode set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION; also includes the minimum frame durations and the stall durations for each format/size combination.

Analogous to android.scaler.streamConfigurationMap for CaptureRequests where android.sensor.pixelMode is android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#SCALER_STREAM_CONFIGURATION_MAP
• android.hardware.camera2.CaptureRequest#SENSOR_PIXEL_MODE

SENSOR_AVAILABLE_TEST_PATTERN_MODES

Added in API level 21

static val SENSOR_AVAILABLE_TEST_PATTERN_MODES: CameraCharacteristics.Key<IntArray!>

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

Defaults to OFF, and always includes OFF if defined.

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

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#SENSOR_TEST_PATTERN_MODE

SENSOR_BLACK_LEVEL_PATTERN

Added in API level 21

static val SENSOR_BLACK_LEVEL_PATTERN: CameraCharacteristics.Key<BlackLevelPattern!>

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

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

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

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

For a MONOCHROME camera device, all of the 2x2 channels must have the same values.

Range of valid values:
>= 0 for each.

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureResult#SENSOR_DYNAMIC_BLACK_LEVEL
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_WHITE_LEVEL
• android.hardware.camera2.CameraCharacteristics#SENSOR_OPTICAL_BLACK_REGIONS
• android.hardware.camera2.CaptureRequest#SENSOR_SENSITIVITY

SENSOR_CALIBRATION_TRANSFORM1

Added in API level 21

static val SENSOR_CALIBRATION_TRANSFORM1: CameraCharacteristics.Key<ColorSpaceTransform!>

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

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

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

Starting from Android Q, this key will not be present for a MONOCHROME camera, even if the camera device has RAW capability.

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1

SENSOR_CALIBRATION_TRANSFORM2

Added in API level 21

static val SENSOR_CALIBRATION_TRANSFORM2: CameraCharacteristics.Key<ColorSpaceTransform!>

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

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

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

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

Starting from Android Q, this key will not be present for a MONOCHROME camera, even if the camera device has RAW capability.

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2

SENSOR_COLOR_TRANSFORM1

Added in API level 21

static val SENSOR_COLOR_TRANSFORM1: CameraCharacteristics.Key<ColorSpaceTransform!>

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

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

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

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

Starting from Android Q, this key will not be present for a MONOCHROME camera, even if the camera device has RAW capability.

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1

SENSOR_COLOR_TRANSFORM2

Added in API level 21

static val SENSOR_COLOR_TRANSFORM2: CameraCharacteristics.Key<ColorSpaceTransform!>

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

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

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

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

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

Starting from Android Q, this key will not be present for a MONOCHROME camera, even if the camera device has RAW capability.

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2

SENSOR_FORWARD_MATRIX1

Added in API level 21

static val SENSOR_FORWARD_MATRIX1: CameraCharacteristics.Key<ColorSpaceTransform!>

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

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

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

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

Starting from Android Q, this key will not be present for a MONOCHROME camera, even if the camera device has RAW capability.

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1

SENSOR_FORWARD_MATRIX2

Added in API level 21

static val SENSOR_FORWARD_MATRIX2: CameraCharacteristics.Key<ColorSpaceTransform!>

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

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

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

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

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

Starting from Android Q, this key will not be present for a MONOCHROME camera, even if the camera device has RAW capability.

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2

SENSOR_INFO_ACTIVE_ARRAY_SIZE

Added in API level 21

static val SENSOR_INFO_ACTIVE_ARRAY_SIZE: CameraCharacteristics.Key<Rect!>

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

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

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

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

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

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

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

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

Units: Pixel coordinates on the image sensor

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#DISTORTION_CORRECTION_MODE
• android.hardware.camera2.CaptureRequest#SCALER_CROP_REGION
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE

SENSOR_INFO_ACTIVE_ARRAY_SIZE_MAXIMUM_RESOLUTION

Added in API level 31

static val SENSOR_INFO_ACTIVE_ARRAY_SIZE_MAXIMUM_RESOLUTION: CameraCharacteristics.Key<Rect!>

The area of the image sensor which corresponds to active pixels after any geometric distortion correction has been applied, when the sensor runs in maximum resolution mode.

Analogous to android.sensor.info.activeArraySize, when android.sensor.pixelMode is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION. Refer to android.sensor.info.activeArraySize for details, with sensor array related keys replaced with their android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION counterparts. This key will only be present for devices which advertise the android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR capability or devices where CameraCharacteristics.getAvailableCaptureRequestKeys lists android.sensor.pixelMode.

Units: Pixel coordinates on the image sensor

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
• android.hardware.camera2.CaptureRequest#SENSOR_PIXEL_MODE

SENSOR_INFO_BINNING_FACTOR

Added in API level 31

static val SENSOR_INFO_BINNING_FACTOR: CameraCharacteristics.Key<Size!>

Dimensions of the group of pixels which are under the same color filter. This specifies the width and height (pair of integers) of the group of pixels which fall under the same color filter for ULTRA_HIGH_RESOLUTION sensors.

Sensors can have pixels grouped together under the same color filter in order to improve various aspects of imaging such as noise reduction, low light performance etc. These groups can be of various sizes such as 2X2 (quad bayer), 3X3 (nona-bayer). This key specifies the length and width of the pixels grouped under the same color filter. In case the device has the CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR capability :

• This key will not be present if REMOSAIC_REPROCESSING is not supported, since RAW images will have a regular bayer pattern.

In case the device does not have the CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR capability :

• This key will be present if CameraCharacteristics.getAvailableCaptureRequestKeys lists android.sensor.pixelMode, since RAW images may not necessarily have a regular bayer pattern when android.hardware.camera2.CaptureRequest#SENSOR_PIXEL_MODE} is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.

Units: Pixels

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#SENSOR_PIXEL_MODE

SENSOR_INFO_COLOR_FILTER_ARRANGEMENT

Added in API level 21

static val SENSOR_INFO_COLOR_FILTER_ARRANGEMENT: CameraCharacteristics.Key<Int!>

The arrangement of color filters on sensor; represents the colors in the top-left 2x2 section of the sensor, in reading order, for a Bayer camera, or the light spectrum it captures for MONOCHROME camera.

Possible values:

• RGGB
• GRBG
• GBRG
• BGGR
• RGB
• MONO
• NIR

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB
• #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG
• #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG
• #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR
• #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB
• #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_MONO
• #SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_NIR

SENSOR_INFO_EXPOSURE_TIME_RANGE

Added in API level 21

static val SENSOR_INFO_EXPOSURE_TIME_RANGE: CameraCharacteristics.Key<Range<Long!>!>

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

Units: Nanoseconds

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

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#SENSOR_EXPOSURE_TIME

SENSOR_INFO_LENS_SHADING_APPLIED

Added in API level 23

static val SENSOR_INFO_LENS_SHADING_APPLIED: CameraCharacteristics.Key<Boolean!>

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

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

When true, the lensShadingCorrectionMap key may still have values greater than 1.0, and those will need to be applied to any captured RAW frames for them to match the shading correction of processed buffers such as YUV or JPEG images. This may occur, for example, when some basic fixed lens shading correction is applied by hardware to RAW data, and additional correction is done dynamically in the camera processing pipeline after demosaicing.

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

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#REQUEST_MAX_NUM_OUTPUT_RAW

SENSOR_INFO_MAX_FRAME_DURATION

Added in API level 21

static val SENSOR_INFO_MAX_FRAME_DURATION: CameraCharacteristics.Key<Long!>

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

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

Refer to android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration for the minimum frame duration values.

Units: Nanoseconds

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

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#SENSOR_FRAME_DURATION

SENSOR_INFO_PHYSICAL_SIZE

Added in API level 21

static val SENSOR_INFO_PHYSICAL_SIZE: CameraCharacteristics.Key<SizeF!>

The physical dimensions of the full pixel array.

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

Units: Millimeters

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE

SENSOR_INFO_PIXEL_ARRAY_SIZE

Added in API level 21

static val SENSOR_INFO_PIXEL_ARRAY_SIZE: CameraCharacteristics.Key<Size!>

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

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

If a camera device supports raw sensor formats, either this or android.sensor.info.preCorrectionActiveArraySize is the maximum dimensions for the raw output formats listed in android.hardware.camera2.params.StreamConfigurationMap (this depends on whether or not the image sensor returns buffers containing pixels that are not part of the active array region for blacklevel calibration or other purposes).

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

Units: Pixels

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PHYSICAL_SIZE
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE

SENSOR_INFO_PIXEL_ARRAY_SIZE_MAXIMUM_RESOLUTION

Added in API level 31

static val SENSOR_INFO_PIXEL_ARRAY_SIZE_MAXIMUM_RESOLUTION: CameraCharacteristics.Key<Size!>

Dimensions of the full pixel array, possibly including black calibration pixels, when the sensor runs in maximum resolution mode. Analogous to android.sensor.info.pixelArraySize, when android.sensor.pixelMode is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.

The pixel count of the full pixel array of the image sensor, which covers android.sensor.info.physicalSize area. This represents the full pixel dimensions of the raw buffers produced by this sensor, when it runs in maximum resolution mode. That is, when android.sensor.pixelMode is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION. This key will only be present for devices which advertise the android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR capability or devices where CameraCharacteristics.getAvailableCaptureRequestKeys lists android.sensor.pixelMode.

Units: Pixels

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PHYSICAL_SIZE
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
• android.hardware.camera2.CaptureRequest#SENSOR_PIXEL_MODE

SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE

Added in API level 23

static val SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE: CameraCharacteristics.Key<Rect!>

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

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

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

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

1. Choose a pixel (x', y') within the active array region of the raw buffer given in android.sensor.info.preCorrectionActiveArraySize, otherwise this pixel is considered to be outside of the FOV, and will not be shown in the processed output image.
2. Apply geometric distortion correction to get the post-distortion pixel coordinate, (x_i, y_i). When applying geometric correction metadata, note that metadata for raw buffers is defined relative to the top, left of the android.sensor.info.preCorrectionActiveArraySize rectangle.
3. If the resulting corrected pixel coordinate is within the region given in android.sensor.info.activeArraySize, then the position of this pixel in the processed output image buffer is (x_i - activeArray.left, y_i - activeArray.top), when the top, left coordinate of that buffer is treated as (0, 0).

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

The currently supported fields that correct for geometric distortion are:

1. android.lens.distortion.

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

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

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

Units: Pixel coordinates on the image sensor

This key is available on all devices.

See Also

• android.hardware.camera2.CameraCharacteristics#LENS_DISTORTION
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_ACTIVE_ARRAY_SIZE
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PIXEL_ARRAY_SIZE
• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE

SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE_MAXIMUM_RESOLUTION

Added in API level 31

static val SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE_MAXIMUM_RESOLUTION: CameraCharacteristics.Key<Rect!>

The area of the image sensor which corresponds to active pixels prior to the application of any geometric distortion correction, when the sensor runs in maximum resolution mode. This key must be used for crop / metering regions, only when android.sensor.pixelMode is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION.

Analogous to android.sensor.info.preCorrectionActiveArraySize, when android.sensor.pixelMode is set to android.hardware.camera2.CameraMetadata#SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION. This key will only be present for devices which advertise the android.hardware.camera2.CameraMetadata#REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR capability or devices where CameraCharacteristics.getAvailableCaptureRequestKeys lists android.sensor.pixelMode.

Units: Pixel coordinates on the image sensor

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
• android.hardware.camera2.CaptureRequest#SENSOR_PIXEL_MODE

SENSOR_INFO_SENSITIVITY_RANGE

Added in API level 21

static val SENSOR_INFO_SENSITIVITY_RANGE: CameraCharacteristics.Key<Range<Int!>!>

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

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

Range of valid values:
Min <= 100, Max >= 800

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#SENSOR_SENSITIVITY

SENSOR_INFO_TIMESTAMP_SOURCE

Added in API level 21

static val SENSOR_INFO_TIMESTAMP_SOURCE: CameraCharacteristics.Key<Int!>

The time base source for sensor capture start timestamps.

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

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

Possible values:

• UNKNOWN
• REALTIME

This key is available on all devices.

See Also

• #SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN
• #SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME

SENSOR_INFO_WHITE_LEVEL

Added in API level 21

static val SENSOR_INFO_WHITE_LEVEL: CameraCharacteristics.Key<Int!>

Maximum raw value output by sensor.

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

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

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

Range of valid values:
> 255 (8-bit output)

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_BLACK_LEVEL_PATTERN
• android.hardware.camera2.CaptureResult#SENSOR_DYNAMIC_WHITE_LEVEL
• android.hardware.camera2.CaptureRequest#SENSOR_SENSITIVITY

SENSOR_MAX_ANALOG_SENSITIVITY

Added in API level 21

static val SENSOR_MAX_ANALOG_SENSITIVITY: CameraCharacteristics.Key<Int!>

Maximum sensitivity that is implemented purely through analog gain.

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

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#SENSOR_SENSITIVITY

SENSOR_OPTICAL_BLACK_REGIONS

Added in API level 24

static val SENSOR_OPTICAL_BLACK_REGIONS: CameraCharacteristics.Key<Array<Rect!>!>

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

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

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

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

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_BLACK_LEVEL_PATTERN
• android.hardware.camera2.CaptureResult#SENSOR_DYNAMIC_BLACK_LEVEL
• android.hardware.camera2.CaptureResult#SENSOR_DYNAMIC_WHITE_LEVEL

SENSOR_ORIENTATION

Added in API level 21

static val SENSOR_ORIENTATION: CameraCharacteristics.Key<Int!>

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

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

Starting with Android API level 32, camera clients that query the orientation via android.hardware.camera2.CameraCharacteristics#get on foldable devices which include logical cameras can receive a value that can dynamically change depending on the device/fold state. Clients are advised to not cache or store the orientation value of such logical sensors. In case repeated queries to CameraCharacteristics are not preferred, then clients can also access the entire mapping from device state to sensor orientation in android.hardware.camera2.params.DeviceStateSensorOrientationMap. Do note that a dynamically changing sensor orientation value in camera characteristics will not be the best way to establish the orientation per frame. Clients that want to know the sensor orientation of a particular captured frame should query the android.logicalMultiCamera.activePhysicalId from the corresponding capture result and check the respective physical camera orientation.

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

Range of valid values:
0, 90, 180, 270

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureResult#LOGICAL_MULTI_CAMERA_ACTIVE_PHYSICAL_ID

SENSOR_READOUT_TIMESTAMP

Added in API level 34

static val SENSOR_READOUT_TIMESTAMP: CameraCharacteristics.Key<Int!>

Whether or not the camera device supports readout timestamp and onReadoutStarted callback.

If this tag is HARDWARE, the camera device calls CameraCaptureSession.CaptureCallback.onReadoutStarted in addition to the CameraCaptureSession.CaptureCallback.onCaptureStarted callback for each capture. The timestamp passed into the callback is the start of camera image readout rather than the start of the exposure. The timestamp source of CameraCaptureSession.CaptureCallback.onReadoutStarted is the same as that of CameraCaptureSession.CaptureCallback.onCaptureStarted.

In addition, the application can switch an output surface's timestamp from start of exposure to start of readout by calling android.hardware.camera2.params.OutputConfiguration#setReadoutTimestampEnabled.

The readout timestamp is beneficial for video recording, because the encoder favors uniform timestamps, and the readout timestamps better reflect the cadence camera sensors output data.

Note that the camera device produces the start-of-exposure and start-of-readout callbacks together. As a result, the CameraCaptureSession.CaptureCallback.onReadoutStarted is called right after CameraCaptureSession.CaptureCallback.onCaptureStarted. The difference in start-of-readout and start-of-exposure is the sensor exposure time, plus certain constant offset. The offset is usually due to camera sensor level crop, and it is generally constant over time for the same set of output resolutions and capture settings.

Possible values:

• NOT_SUPPORTED
• HARDWARE

This key is available on all devices.

See Also

• #SENSOR_READOUT_TIMESTAMP_NOT_SUPPORTED
• #SENSOR_READOUT_TIMESTAMP_HARDWARE

SENSOR_REFERENCE_ILLUMINANT1

Added in API level 21

static val SENSOR_REFERENCE_ILLUMINANT1: CameraCharacteristics.Key<Int!>

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

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

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

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

Starting from Android Q, this key will not be present for a MONOCHROME camera, even if the camera device has RAW capability.

Possible values:

• DAYLIGHT
• FLUORESCENT
• TUNGSTEN
• FLASH
• FINE_WEATHER
• CLOUDY_WEATHER
• SHADE
• DAYLIGHT_FLUORESCENT
• DAY_WHITE_FLUORESCENT
• COOL_WHITE_FLUORESCENT
• WHITE_FLUORESCENT
• STANDARD_A
• STANDARD_B
• STANDARD_C
• D55
• D65
• D75
• D50
• ISO_STUDIO_TUNGSTEN

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM1
• android.hardware.camera2.CameraCharacteristics#SENSOR_COLOR_TRANSFORM1
• android.hardware.camera2.CameraCharacteristics#SENSOR_FORWARD_MATRIX1
• android.hardware.camera2.CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT2
• #SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT
• #SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT
• #SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN
• #SENSOR_REFERENCE_ILLUMINANT1_FLASH
• #SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER
• #SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER
• #SENSOR_REFERENCE_ILLUMINANT1_SHADE
• #SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT
• #SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT
• #SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT
• #SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT
• #SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A
• #SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B
• #SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C
• #SENSOR_REFERENCE_ILLUMINANT1_D55
• #SENSOR_REFERENCE_ILLUMINANT1_D65
• #SENSOR_REFERENCE_ILLUMINANT1_D75
• #SENSOR_REFERENCE_ILLUMINANT1_D50
• #SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN

SENSOR_REFERENCE_ILLUMINANT2

Added in API level 21

static val SENSOR_REFERENCE_ILLUMINANT2: CameraCharacteristics.Key<Byte!>

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

See android.sensor.referenceIlluminant1 for more details.

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

Starting from Android Q, this key will not be present for a MONOCHROME camera, even if the camera device has RAW capability.

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

Optional - The value for this key may be null on some devices.

Permission android.Manifest.permission#CAMERA is needed to access this property

See Also

• android.hardware.camera2.CameraCharacteristics#SENSOR_CALIBRATION_TRANSFORM2
• android.hardware.camera2.CameraCharacteristics#SENSOR_COLOR_TRANSFORM2
• android.hardware.camera2.CameraCharacteristics#SENSOR_FORWARD_MATRIX2
• android.hardware.camera2.CameraCharacteristics#SENSOR_REFERENCE_ILLUMINANT1

SHADING_AVAILABLE_MODES

Added in API level 23

static val SHADING_AVAILABLE_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#SHADING_MODE

STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES

Added in API level 21

static val STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES: CameraCharacteristics.Key<IntArray!>

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

OFF is always supported.

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

This key is available on all devices.

See Also

• android.hardware.camera2.CaptureRequest#STATISTICS_FACE_DETECT_MODE

STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES

Added in API level 21

static val STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES: CameraCharacteristics.Key<BooleanArray!>

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

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

ON is always supported on devices with the RAW capability.

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

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#STATISTICS_HOT_PIXEL_MAP_MODE

STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES

Added in API level 23

static val STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

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

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#STATISTICS_LENS_SHADING_MAP_MODE

STATISTICS_INFO_AVAILABLE_OIS_DATA_MODES

Added in API level 28

static val STATISTICS_INFO_AVAILABLE_OIS_DATA_MODES: CameraCharacteristics.Key<IntArray!>

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

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

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

Optional - The value for this key may be null on some devices.

See Also

• android.hardware.camera2.CaptureRequest#STATISTICS_OIS_DATA_MODE

STATISTICS_INFO_MAX_FACE_COUNT

Added in API level 21

static val STATISTICS_INFO_MAX_FACE_COUNT: CameraCharacteristics.Key<Int!>

The maximum number of simultaneously detectable faces.

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

This key is available on all devices.

SYNC_MAX_LATENCY

Added in API level 21

static val SYNC_MAX_LATENCY: CameraCharacteristics.Key<Int!>

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

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

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

Units: Frame counts

Possible values:

• PER_FRAME_CONTROL
• UNKNOWN

Available values for this device:
A positive value, PER_FRAME_CONTROL, or UNKNOWN.

This key is available on all devices.

See Also

• #SYNC_MAX_LATENCY_PER_FRAME_CONTROL
• #SYNC_MAX_LATENCY_UNKNOWN

TONEMAP_AVAILABLE_TONE_MAP_MODES

Added in API level 21

static val TONEMAP_AVAILABLE_TONE_MAP_MODES: CameraCharacteristics.Key<IntArray!>

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

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

• CONTRAST_CURVE, FAST and HIGH_QUALITY
• GAMMA_VALUE, PRESET_CURVE, FAST and HIGH_QUALITY

This includes all FULL level devices.

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

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#TONEMAP_MODE

TONEMAP_MAX_CURVE_POINTS

Added in API level 21

static val TONEMAP_MAX_CURVE_POINTS: CameraCharacteristics.Key<Int!>

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

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

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

Optional - The value for this key may be null on some devices.

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

See Also

• android.hardware.camera2.CameraCharacteristics#INFO_SUPPORTED_HARDWARE_LEVEL
• android.hardware.camera2.CaptureRequest#TONEMAP_CURVE