CameraCharacteristics
public
final
class
CameraCharacteristics
extends CameraMetadata<Key<?>>
java.lang.Object | ||
↳ | 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.
See also:
Summary
Nested classes | |||
---|---|---|---|
class |
CameraCharacteristics.Key<T>
A |
Inherited constants |
---|
Fields | |
---|---|
public
static
final
Key<int[]> |
AUTOMOTIVE_LENS_FACING
The direction of the camera faces relative to the vehicle body frame and the passenger seats. |
public
static
final
Key<Integer> |
AUTOMOTIVE_LOCATION
Location of the cameras on the automotive devices. |
public
static
final
Key<int[]> |
COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
List of aberration correction modes for |
public
static
final
Key<int[]> |
CONTROL_AE_AVAILABLE_ANTIBANDING_MODES
List of auto-exposure antibanding modes for |
public
static
final
Key<int[]> |
CONTROL_AE_AVAILABLE_MODES
List of auto-exposure modes for |
public
static
final
Key<Range[]<Integer>> |
CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
List of frame rate ranges for |
public
static
final
Key<Range<Integer>> |
CONTROL_AE_COMPENSATION_RANGE
Maximum and minimum exposure compensation values for
|
public
static
final
Key<Rational> |
CONTROL_AE_COMPENSATION_STEP
Smallest step by which the exposure compensation can be changed. |
public
static
final
Key<Boolean> |
CONTROL_AE_LOCK_AVAILABLE
Whether the camera device supports Devices with MANUAL_SENSOR capability or BURST_CAPTURE capability will always
list |
public
static
final
Key<int[]> |
CONTROL_AF_AVAILABLE_MODES
List of auto-focus (AF) modes for |
public
static
final
Key<Boolean> |
CONTROL_AUTOFRAMING_AVAILABLE
Whether the camera device supports |
public
static
final
Key<int[]> |
CONTROL_AVAILABLE_EFFECTS
List of color effects for |
public
static
final
Key<Capability[]> |
CONTROL_AVAILABLE_EXTENDED_SCENE_MODE_CAPABILITIES
The list of extended scene modes for |
public
static
final
Key<int[]> |
CONTROL_AVAILABLE_MODES
List of control modes for |
public
static
final
Key<int[]> |
CONTROL_AVAILABLE_SCENE_MODES
List of scene modes for |
public
static
final
Key<int[]> |
CONTROL_AVAILABLE_SETTINGS_OVERRIDES
List of available settings overrides supported by the camera device that can be used to speed up certain controls. |
public
static
final
Key<int[]> |
CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES
List of video stabilization modes for |
public
static
final
Key<int[]> |
CONTROL_AWB_AVAILABLE_MODES
List of auto-white-balance modes for |
public
static
final
Key<Boolean> |
CONTROL_AWB_LOCK_AVAILABLE
Whether the camera device supports Devices with MANUAL_POST_PROCESSING capability or BURST_CAPTURE capability will
always list |
public
static
final
Key<Range<Float>> |
CONTROL_LOW_LIGHT_BOOST_INFO_LUMINANCE_RANGE
The operating luminance range of low light boost measured in lux (lx). |
public
static
final
Key<Integer> |
CONTROL_MAX_REGIONS_AE
The maximum number of metering regions that can be used by the auto-exposure (AE) routine. |
public
static
final
Key<Integer> |
CONTROL_MAX_REGIONS_AF
The maximum number of metering regions that can be used by the auto-focus (AF) routine. |
public
static
final
Key<Integer> |
CONTROL_MAX_REGIONS_AWB
The maximum number of metering regions that can be used by the auto-white balance (AWB) routine. |
public
static
final
Key<Range<Integer>> |
CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE
Range of boosts for |
public
static
final
Key<Range<Float>> |
CONTROL_ZOOM_RATIO_RANGE
Minimum and maximum zoom ratios supported by this camera device. |
public
static
final
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. |
public
static
final
Key<int[]> |
DISTORTION_CORRECTION_AVAILABLE_MODES
List of distortion correction modes for |
public
static
final
Key<int[]> |
EDGE_AVAILABLE_EDGE_MODES
List of edge enhancement modes for |
public
static
final
Key<Boolean> |
FLASH_INFO_AVAILABLE
Whether this camera device has a flash unit. |
public
static
final
Key<Integer> |
FLASH_INFO_STRENGTH_DEFAULT_LEVEL
Default flashlight brightness level to be set via
|
public
static
final
Key<Integer> |
FLASH_INFO_STRENGTH_MAXIMUM_LEVEL
Maximum flashlight brightness level. |
public
static
final
Key<Integer> |
FLASH_SINGLE_STRENGTH_DEFAULT_LEVEL
Default flash brightness level for manual flash control in |
public
static
final
Key<Integer> |
FLASH_SINGLE_STRENGTH_MAX_LEVEL
Maximum flash brightness level for manual flash control in |
public
static
final
Key<Integer> |
FLASH_TORCH_STRENGTH_DEFAULT_LEVEL
Default flash brightness level for manual flash control in If flash unit is available this will be greater than or equal to 1 and less
or equal to |
public
static
final
Key<Integer> |
FLASH_TORCH_STRENGTH_MAX_LEVEL
Maximum flash brightness level for manual flash control in Maximum flash brightness level in camera capture mode and
|
public
static
final
Key<int[]> |
HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES
List of hot pixel correction modes for |
public
static
final
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. |
public
static
final
Key<Integer> |
INFO_SESSION_CONFIGURATION_QUERY_VERSION
The version of the session configuration query
|
public
static
final
Key<Integer> |
INFO_SUPPORTED_HARDWARE_LEVEL
Generally classifies the overall set of the camera device functionality. |
public
static
final
Key<String> |
INFO_VERSION
A short string for manufacturer version information about the camera device, such as ISP hardware, sensors, etc. |
public
static
final
Key<Size[]> |
JPEG_AVAILABLE_THUMBNAIL_SIZES
List of JPEG thumbnail sizes for |
public
static
final
Key<float[]> |
LENS_DISTORTION
The correction coefficients to correct for this camera device's radial and tangential lens distortion. |
public
static
final
Key<float[]> |
LENS_DISTORTION_MAXIMUM_RESOLUTION
The correction coefficients to correct for this camera device's
radial and tangential lens distortion for a
CaptureRequest with |
public
static
final
Key<Integer> |
LENS_FACING
Direction the camera faces relative to device screen. |
public
static
final
Key<float[]> |
LENS_INFO_AVAILABLE_APERTURES
List of aperture size values for |
public
static
final
Key<float[]> |
LENS_INFO_AVAILABLE_FILTER_DENSITIES
List of neutral density filter values for
|
public
static
final
Key<float[]> |
LENS_INFO_AVAILABLE_FOCAL_LENGTHS
List of focal lengths for |
public
static
final
Key<int[]> |
LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
List of optical image stabilization (OIS) modes for
|
public
static
final
Key<Integer> |
LENS_INFO_FOCUS_DISTANCE_CALIBRATION
The lens focus distance calibration quality. |
public
static
final
Key<Float> |
LENS_INFO_HYPERFOCAL_DISTANCE
Hyperfocal distance for this lens. |
public
static
final
Key<Float> |
LENS_INFO_MINIMUM_FOCUS_DISTANCE
Shortest distance from frontmost surface of the lens that can be brought into sharp focus. |
public
static
final
Key<float[]> |
LENS_INTRINSIC_CALIBRATION
The parameters for this camera device's intrinsic calibration. |
public
static
final
Key<float[]> |
LENS_INTRINSIC_CALIBRATION_MAXIMUM_RESOLUTION
The parameters for this camera device's intrinsic
calibration when |
public
static
final
Key<Integer> |
LENS_POSE_REFERENCE
The origin for |
public
static
final
Key<float[]> |
LENS_POSE_ROTATION
The orientation of the camera relative to the sensor coordinate system. |
public
static
final
Key<float[]> |
LENS_POSE_TRANSLATION
Position of the camera optical center. |
public
static
final
Key<float[]> |
LENS_RADIAL_DISTORTION
This field was deprecated
in API level 28.
This field was inconsistently defined in terms of its
normalization. Use |
public
static
final
Key<Integer> |
LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE
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. |
public
static
final
Key<int[]> |
NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
List of noise reduction modes for |
public
static
final
Key<Integer> |
REPROCESS_MAX_CAPTURE_STALL
The maximal camera capture pipeline stall (in unit of frame count) introduced by a reprocess capture request. |
public
static
final
Key<int[]> |
REQUEST_AVAILABLE_CAPABILITIES
List of capabilities that this camera device advertises as fully supporting. |
public
static
final
Key<ColorSpaceProfiles> |
REQUEST_AVAILABLE_COLOR_SPACE_PROFILES
An interface for querying the color space profiles supported by a camera device. |
public
static
final
Key<DynamicRangeProfiles> |
REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES
Devices supporting the 10-bit output capability
|
public
static
final
Key<Integer> |
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. |
public
static
final
Key<Integer> |
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. |
public
static
final
Key<Integer> |
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. |
public
static
final
Key<Integer> |
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 |
public
static
final
Key<Integer> |
REQUEST_PARTIAL_RESULT_COUNT
Defines how many sub-components a result will be composed of. |
public
static
final
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. |
public
static
final
Key<Long> |
REQUEST_RECOMMENDED_TEN_BIT_DYNAMIC_RANGE_PROFILE
Recommended 10-bit dynamic range profile. |
public
static
final
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 |
public
static
final
Key<int[]> |
SCALER_AVAILABLE_ROTATE_AND_CROP_MODES
List of rotate-and-crop modes for |
public
static
final
Key<long[]> |
SCALER_AVAILABLE_STREAM_USE_CASES
The stream use cases supported by this camera device. |
public
static
final
Key<Integer> |
SCALER_CROPPING_TYPE
The crop type that this camera device supports. |
public
static
final
Key<Size> |
SCALER_DEFAULT_SECURE_IMAGE_SIZE
Default YUV/PRIVATE size to use for requesting secure image buffers. |
public
static
final
Key<MandatoryStreamCombination[]> |
SCALER_MANDATORY_CONCURRENT_STREAM_COMBINATIONS
An array of mandatory concurrent stream combinations. |
public
static
final
Key<MandatoryStreamCombination[]> |
SCALER_MANDATORY_MAXIMUM_RESOLUTION_STREAM_COMBINATIONS
An array of mandatory stream combinations which are applicable when
|
public
static
final
Key<MandatoryStreamCombination[]> |
SCALER_MANDATORY_PREVIEW_STABILIZATION_OUTPUT_STREAM_COMBINATIONS
An array of mandatory stream combinations which are applicable when device lists
|
public
static
final
Key<MandatoryStreamCombination[]> |
SCALER_MANDATORY_STREAM_COMBINATIONS
An array of mandatory stream combinations generated according to the camera device
|
public
static
final
Key<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
|
public
static
final
Key<MandatoryStreamCombination[]> |
SCALER_MANDATORY_USE_CASE_STREAM_COMBINATIONS
An array of mandatory stream combinations with stream use cases. |
public
static
final
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. |
public
static
final
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. |
public
static
final
Key<StreamConfigurationMap> |
SCALER_STREAM_CONFIGURATION_MAP_MAXIMUM_RESOLUTION
The available stream configurations that this
camera device supports when given a CaptureRequest with |
public
static
final
Key<int[]> |
SENSOR_AVAILABLE_TEST_PATTERN_MODES
List of sensor test pattern modes for |
public
static
final
Key<BlackLevelPattern> |
SENSOR_BLACK_LEVEL_PATTERN
A fixed black level offset for each of the color filter arrangement (CFA) mosaic channels. |
public
static
final
Key<ColorSpaceTransform> |
SENSOR_CALIBRATION_TRANSFORM1
A per-device calibration transform matrix that maps from the reference sensor colorspace to the actual device sensor colorspace. |
public
static
final
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). |
public
static
final
Key<ColorSpaceTransform> |
SENSOR_COLOR_TRANSFORM1
A matrix that transforms color values from CIE XYZ color space to reference sensor color space. |
public
static
final
Key<ColorSpaceTransform> |
SENSOR_COLOR_TRANSFORM2
A matrix that transforms color values from CIE XYZ color space to reference sensor color space. |
public
static
final
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. |
public
static
final
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. |
public
static
final
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. |
public
static
final
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. |
public
static
final
Key<Size> |
SENSOR_INFO_BINNING_FACTOR
Dimensions of the group of pixels which are under the same color filter. |
public
static
final
Key<Integer> |
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. |
public
static
final
Key<Range<Long>> |
SENSOR_INFO_EXPOSURE_TIME_RANGE
The range of image exposure times for |
public
static
final
Key<Boolean> |
SENSOR_INFO_LENS_SHADING_APPLIED
Whether the RAW images output from this camera device are subject to lens shading correction. |
public
static
final
Key<Long> |
SENSOR_INFO_MAX_FRAME_DURATION
The maximum possible frame duration (minimum frame rate) for
|
public
static
final
Key<SizeF> |
SENSOR_INFO_PHYSICAL_SIZE
The physical dimensions of the full pixel array. |
public
static
final
Key<Size> |
SENSOR_INFO_PIXEL_ARRAY_SIZE
Dimensions of the full pixel array, possibly including black calibration pixels. |
public
static
final
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. |
public
static
final
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. |
public
static
final
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. |
public
static
final
Key<Range<Integer>> |
SENSOR_INFO_SENSITIVITY_RANGE
Range of sensitivities for |
public
static
final
Key<Integer> |
SENSOR_INFO_TIMESTAMP_SOURCE
The time base source for sensor capture start timestamps. |
public
static
final
Key<Integer> |
SENSOR_INFO_WHITE_LEVEL
Maximum raw value output by sensor. |
public
static
final
Key<Integer> |
SENSOR_MAX_ANALOG_SENSITIVITY
Maximum sensitivity that is implemented purely through analog gain. |
public
static
final
Key<Rect[]> |
SENSOR_OPTICAL_BLACK_REGIONS
List of disjoint rectangles indicating the sensor optically shielded black pixel regions. |
public
static
final
Key<Integer> |
SENSOR_ORIENTATION
Clockwise angle through which the output image needs to be rotated to be upright on the device screen in its native orientation. |
public
static
final
Key<Integer> |
SENSOR_READOUT_TIMESTAMP
Whether or not the camera device supports readout timestamp and
|
public
static
final
Key<Integer> |
SENSOR_REFERENCE_ILLUMINANT1
The standard reference illuminant used as the scene light source when
calculating the |
public
static
final
Key<Byte> |
SENSOR_REFERENCE_ILLUMINANT2
The standard reference illuminant used as the scene light source when
calculating the |
public
static
final
Key<int[]> |
SHADING_AVAILABLE_MODES
List of lens shading modes for |
public
static
final
Key<int[]> |
STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
List of face detection modes for |
public
static
final
Key<boolean[]> |
STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES
List of hot pixel map output modes for |
public
static
final
Key<int[]> |
STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES
List of lens shading map output modes for |
public
static
final
Key<int[]> |
STATISTICS_INFO_AVAILABLE_OIS_DATA_MODES
List of OIS data output modes for |
public
static
final
Key<Integer> |
STATISTICS_INFO_MAX_FACE_COUNT
The maximum number of simultaneously detectable faces. |
public
static
final
Key<Integer> |
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. |
public
static
final
Key<int[]> |
TONEMAP_AVAILABLE_TONE_MAP_MODES
List of tonemapping modes for |
public
static
final
Key<Integer> |
TONEMAP_MAX_CURVE_POINTS
Maximum number of supported points in the
tonemap curve that can be used for |
Public methods | |
---|---|
<T>
T
|
get(Key<T> key)
Get a camera characteristics field value. |
List<Key<?>>
|
getAvailableCaptureRequestKeys()
Returns the list of keys supported by this |
List<Key<?>>
|
getAvailableCaptureResultKeys()
Returns the list of keys supported by this |
List<Key<?>>
|
getAvailablePhysicalCameraRequestKeys()
Returns a subset of |
List<Key<?>>
|
getAvailableSessionCharacteristicsKeys()
Get the keys in Camera Characteristics whose values are capture session specific. |
List<Key<?>>
|
getAvailableSessionKeys()
Returns a subset of |
List<Key<?>>
|
getKeys()
Returns a list of the keys contained in this map. |
List<Key<?>>
|
getKeysNeedingPermission()
Returns a subset of the list returned by |
Set<String>
|
getPhysicalCameraIds()
Returns the set of physical camera ids that this logical |
RecommendedStreamConfigurationMap
|
getRecommendedStreamConfigurationMap(int usecase)
Retrieve camera device recommended stream configuration map
|
Inherited methods | |
---|---|
Fields
AUTOMOTIVE_LENS_FACING
public static final Key<int[]> AUTOMOTIVE_LENS_FACING
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:
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:
AUTOMOTIVE_LOCATION
LENS_POSE_REFERENCE
LENS_POSE_ROTATION
LENS_POSE_TRANSLATION
CameraMetadata.AUTOMOTIVE_LENS_FACING_EXTERIOR_OTHER
CameraMetadata.AUTOMOTIVE_LENS_FACING_EXTERIOR_FRONT
CameraMetadata.AUTOMOTIVE_LENS_FACING_EXTERIOR_REAR
CameraMetadata.AUTOMOTIVE_LENS_FACING_EXTERIOR_LEFT
CameraMetadata.AUTOMOTIVE_LENS_FACING_EXTERIOR_RIGHT
CameraMetadata.AUTOMOTIVE_LENS_FACING_INTERIOR_OTHER
CameraMetadata.AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_1_LEFT
CameraMetadata.AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_1_CENTER
CameraMetadata.AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_1_RIGHT
CameraMetadata.AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_2_LEFT
CameraMetadata.AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_2_CENTER
CameraMetadata.AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_2_RIGHT
CameraMetadata.AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_3_LEFT
CameraMetadata.AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_3_CENTER
CameraMetadata.AUTOMOTIVE_LENS_FACING_INTERIOR_SEAT_ROW_3_RIGHT
AUTOMOTIVE_LOCATION
public static final Key<Integer> AUTOMOTIVE_LOCATION
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:
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:
LENS_POSE_REFERENCE
LENS_POSE_ROTATION
LENS_POSE_TRANSLATION
CameraMetadata.AUTOMOTIVE_LOCATION_INTERIOR
CameraMetadata.AUTOMOTIVE_LOCATION_EXTERIOR_OTHER
CameraMetadata.AUTOMOTIVE_LOCATION_EXTERIOR_FRONT
CameraMetadata.AUTOMOTIVE_LOCATION_EXTERIOR_REAR
CameraMetadata.AUTOMOTIVE_LOCATION_EXTERIOR_LEFT
CameraMetadata.AUTOMOTIVE_LOCATION_EXTERIOR_RIGHT
CameraMetadata.AUTOMOTIVE_LOCATION_EXTRA_OTHER
CameraMetadata.AUTOMOTIVE_LOCATION_EXTRA_FRONT
CameraMetadata.AUTOMOTIVE_LOCATION_EXTRA_REAR
CameraMetadata.AUTOMOTIVE_LOCATION_EXTRA_LEFT
CameraMetadata.AUTOMOTIVE_LOCATION_EXTRA_RIGHT
COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
public static final Key<int[]> COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
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.
CONTROL_AE_AVAILABLE_ANTIBANDING_MODES
public static final Key<int[]> CONTROL_AE_AVAILABLE_ANTIBANDING_MODES
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.
CONTROL_AE_AVAILABLE_MODES
public static final Key<int[]> CONTROL_AE_AVAILABLE_MODES
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:
CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
public static final Key<Range[]<Integer>> CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
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, aCamcorderProfile
that hasquality
in the range [QUALITY_LOW
,QUALITY_2160P
], if the profile is supported by the device and hasvideoFrameRate
x
, this list will always include (x
,x
). -
Also, a camera device must either not support any
CamcorderProfile
, or support at least one normalCamcorderProfile
that hasvideoFrameRate
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
) wheremax
= 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
) wheremin
<= 15 andmax
= 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.
CONTROL_AE_COMPENSATION_RANGE
public static final Key<Range<Integer>> 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.
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.
CONTROL_AE_COMPENSATION_STEP
public static final Key<Rational> CONTROL_AE_COMPENSATION_STEP
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.
CONTROL_AE_LOCK_AVAILABLE
public static final Key<Boolean> CONTROL_AE_LOCK_AVAILABLE
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:
CONTROL_AF_AVAILABLE_MODES
public static final Key<int[]> CONTROL_AF_AVAILABLE_MODES
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
(
) will support AUTO mode.android.lens.info.minimumFocusDistance
> 0
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.
CONTROL_AUTOFRAMING_AVAILABLE
public static final Key<Boolean> CONTROL_AUTOFRAMING_AVAILABLE
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
CONTROL_AVAILABLE_EFFECTS
public static final Key<int[]> CONTROL_AVAILABLE_EFFECTS
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.
CONTROL_AVAILABLE_EXTENDED_SCENE_MODE_CAPABILITIES
public static final Key<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.
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.
CONTROL_AVAILABLE_MODES
public static final Key<int[]> CONTROL_AVAILABLE_MODES
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:
CONTROL_AVAILABLE_SCENE_MODES
public static final Key<int[]> CONTROL_AVAILABLE_SCENE_MODES
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.
CONTROL_AVAILABLE_SETTINGS_OVERRIDES
public static final Key<int[]> CONTROL_AVAILABLE_SETTINGS_OVERRIDES
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
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:
CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES
public static final Key<int[]> CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES
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.
CONTROL_AWB_AVAILABLE_MODES
public static final Key<int[]> CONTROL_AWB_AVAILABLE_MODES
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.
CONTROL_AWB_LOCK_AVAILABLE
public static final Key<Boolean> CONTROL_AWB_LOCK_AVAILABLE
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:
CONTROL_LOW_LIGHT_BOOST_INFO_LUMINANCE_RANGE
public static final Key<Range<Float>> CONTROL_LOW_LIGHT_BOOST_INFO_LUMINANCE_RANGE
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
public static final Key<Integer> CONTROL_MAX_REGIONS_AE
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:
CONTROL_MAX_REGIONS_AF
public static final Key<Integer> CONTROL_MAX_REGIONS_AF
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:
CONTROL_MAX_REGIONS_AWB
public static final Key<Integer> CONTROL_MAX_REGIONS_AWB
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:
CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE
public static final Key<Range<Integer>> CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE
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.
CONTROL_ZOOM_RATIO_RANGE
public static final Key<Range<Float>> CONTROL_ZOOM_RATIO_RANGE
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
DEPTH_DEPTH_IS_EXCLUSIVE
public static final 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.
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:
DISTORTION_CORRECTION_AVAILABLE_MODES
public static final Key<int[]> DISTORTION_CORRECTION_AVAILABLE_MODES
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.
EDGE_AVAILABLE_EDGE_MODES
public static final Key<int[]> EDGE_AVAILABLE_EDGE_MODES
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
FLASH_INFO_AVAILABLE
public static final Key<Boolean> FLASH_INFO_AVAILABLE
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
public static final Key<Integer> FLASH_INFO_STRENGTH_DEFAULT_LEVEL
Default flashlight brightness level to be set via
CameraManager.turnOnTorchWithStrengthLevel(String, int)
.
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.
) 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.android.flash.info.strengthDefaultLevel
Optional - The value for this key may be null
on some devices.
FLASH_INFO_STRENGTH_MAXIMUM_LEVEL
public static final Key<Integer> FLASH_INFO_STRENGTH_MAXIMUM_LEVEL
Maximum flashlight brightness level.
If this value is greater than 1, then the device supports controlling the
flashlight brightness level via
CameraManager.turnOnTorchWithStrengthLevel(String, int)
.
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
public static final Key<Integer> FLASH_SINGLE_STRENGTH_DEFAULT_LEVEL
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:
FLASH_SINGLE_STRENGTH_MAX_LEVEL
public static final Key<Integer> FLASH_SINGLE_STRENGTH_MAX_LEVEL
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:
FLASH_TORCH_STRENGTH_DEFAULT_LEVEL
public static final Key<Integer> FLASH_TORCH_STRENGTH_DEFAULT_LEVEL
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:
FLASH_TORCH_STRENGTH_MAX_LEVEL
public static final Key<Integer> FLASH_TORCH_STRENGTH_MAX_LEVEL
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.
HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES
public static final Key<int[]> HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES
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:
INFO_DEVICE_STATE_SENSOR_ORIENTATION_MAP
public static final 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.
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
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
INFO_SESSION_CONFIGURATION_QUERY_VERSION
public static final Key<Integer> INFO_SESSION_CONFIGURATION_QUERY_VERSION
The version of the session configuration query
CameraDevice.CameraDeviceSetup.isSessionConfigurationSupported(SessionConfiguration)
and CameraDevice.CameraDeviceSetup.getSessionCharacteristics(SessionConfiguration)
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
CameraDevice.CameraDeviceSetup.isSessionConfigurationSupported(SessionConfiguration)
.
It also defines the set of session specific keys in CameraCharacteristics when returned from
CameraDevice.CameraDeviceSetup.getSessionCharacteristics(SessionConfiguration)
.
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
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
CameraDevice.CameraDeviceSetup.isSessionConfigurationSupported(SessionConfiguration)
and CameraDevice.CameraDeviceSetup.getSessionCharacteristics(SessionConfiguration)
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 fromStreamConfigurationMap#getOutputSizes
.MAXIMUM_16_9
is the maximum output resolution with 16:9 aspect ratio.S1440P
refers to2560x1440 (16:9)
.S1080P
refers to1920x1080 (16:9)
.S720P
refers to1280x720 (16:9)
.UHD
refers to3840x2160 (16:9)
.XVGA
refers to1024x768 (4:3)
.S1080P_43
refers to1440x1080 (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.
This key is available on all devices.
INFO_SUPPORTED_HARDWARE_LEVEL
public static final Key<Integer> INFO_SUPPORTED_HARDWARE_LEVEL
Generally classifies the overall set of the camera device functionality.
The supported hardware level is a high-level description of the camera device's
capabilities, summarizing several capabilities into one field. Each level adds additional
features to the previous one, and is always a strict superset of the previous level.
The ordering is LEGACY < LIMITED < FULL < LEVEL_3
.
Starting from LEVEL_3
, the level enumerations are guaranteed to be in increasing
numerical value as well. To check if a given device is at least at a given hardware level,
the following code snippet can be used:
// Returns true if the device supports the required hardware level, or better.
boolean isHardwareLevelSupported(CameraCharacteristics c, int requiredLevel) {
final int[] sortedHwLevels = {
CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY,
CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL,
CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED,
CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_FULL,
CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_3
};
int deviceLevel = c.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);
if (requiredLevel == deviceLevel) {
return true;
}
for (int sortedlevel : sortedHwLevels) {
if (sortedlevel == requiredLevel) {
return true;
} else if (sortedlevel == deviceLevel) {
return false;
}
}
return false; // Should never reach here
}
At a high level, the levels are:
LEGACY
devices operate in a backwards-compatibility mode for older Android devices, and have very limited capabilities.LIMITED
devices represent the baseline feature set, and may also include additional capabilities that are subsets ofFULL
.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 toLIMITED
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 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:
This key is available on all devices.
See also:
CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES
LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
LENS_INFO_FOCUS_DISTANCE_CALIBRATION
REQUEST_AVAILABLE_CAPABILITIES
SENSOR_INFO_TIMESTAMP_SOURCE
STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
CameraMetadata.INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED
CameraMetadata.INFO_SUPPORTED_HARDWARE_LEVEL_FULL
CameraMetadata.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY
CameraMetadata.INFO_SUPPORTED_HARDWARE_LEVEL_3
CameraMetadata.INFO_SUPPORTED_HARDWARE_LEVEL_EXTERNAL
INFO_VERSION
public static final Key<String> INFO_VERSION
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
public static final Key<Size[]> JPEG_AVAILABLE_THUMBNAIL_SIZES
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:
LENS_DISTORTION
public static final Key<float[]> LENS_DISTORTION
The correction coefficients to correct for this camera device's radial and tangential lens distortion.
Replaces the deprecated android.lens.radialDistortion
field, which was
inconsistently defined.
Three radial distortion coefficients [kappa_1, kappa_2,
kappa_3]
and two tangential distortion coefficients
[kappa_4, kappa_5]
that can be used to correct the
lens's geometric distortion with the mapping equations:
x_c = x_i * ( 1 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
kappa_4 * (2 * x_i * y_i) + kappa_5 * ( r^2 + 2 * x_i^2 )
y_c = y_i * ( 1 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
kappa_5 * (2 * x_i * y_i) + kappa_4 * ( r^2 + 2 * y_i^2 )
Here, [x_c, y_c]
are the coordinates to sample in the
input image that correspond to the pixel values in the
corrected image at the coordinate [x_i, y_i]
:
correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)
The pixel coordinates are defined in a coordinate system
related to the android.lens.intrinsicCalibration
calibration fields; see that entry for details of the mapping stages.
Both [x_i, y_i]
and [x_c, y_c]
have (0,0)
at the lens optical center [c_x, c_y]
, and
the range of the coordinates depends on the focal length
terms of the intrinsic calibration.
Finally, r
represents the radial distance from the
optical center, r^2 = x_i^2 + y_i^2
.
The distortion model used is the Brown-Conrady model.
Units: Unitless coefficients.
Optional - The value for this key may be null
on some devices.
Permission Manifest.permission.CAMERA
is needed to access this property
LENS_DISTORTION_MAXIMUM_RESOLUTION
public static final Key<float[]> 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
CameraMetadata.SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION
.
Analogous to android.lens.distortion
, when android.sensor.pixelMode
is set to
CameraMetadata.SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION
.
Units: Unitless coefficients.
Optional - The value for this key may be null
on some devices.
Permission Manifest.permission.CAMERA
is needed to access this property
LENS_FACING
public static final Key<Integer> LENS_FACING
Direction the camera faces relative to device screen.
Possible values:
This key is available on all devices.
LENS_INFO_AVAILABLE_APERTURES
public static final Key<float[]> LENS_INFO_AVAILABLE_APERTURES
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
LENS_INFO_AVAILABLE_FILTER_DENSITIES
public static final Key<float[]> LENS_INFO_AVAILABLE_FILTER_DENSITIES
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
LENS_INFO_AVAILABLE_FOCAL_LENGTHS
public static final Key<float[]> LENS_INFO_AVAILABLE_FOCAL_LENGTHS
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:
LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
public static final Key<int[]> LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
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
LENS_INFO_FOCUS_DISTANCE_CALIBRATION
public static final Key<Integer> LENS_INFO_FOCUS_DISTANCE_CALIBRATION
The lens focus distance calibration quality.
The lens focus distance calibration quality determines the reliability of
focus related metadata entries, i.e. android.lens.focusDistance
,
android.lens.focusRange
, android.lens.info.hyperfocalDistance
, and
android.lens.info.minimumFocusDistance
.
APPROXIMATE and CALIBRATED devices report the focus metadata in
units of diopters (1/meter), so 0.0f
represents focusing at infinity,
and increasing positive numbers represent focusing closer and closer
to the camera device. The focus distance control also uses diopters
on these devices.
UNCALIBRATED devices do not use units that are directly comparable
to any real physical measurement, but 0.0f
still represents farthest
focus, and android.lens.info.minimumFocusDistance
represents the
nearest focus the device can achieve.
Possible values:
Optional - 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:
INFO_SUPPORTED_HARDWARE_LEVEL
CaptureRequest.LENS_FOCUS_DISTANCE
CaptureResult.LENS_FOCUS_RANGE
LENS_INFO_HYPERFOCAL_DISTANCE
LENS_INFO_MINIMUM_FOCUS_DISTANCE
CameraMetadata.LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED
CameraMetadata.LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE
CameraMetadata.LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED
LENS_INFO_HYPERFOCAL_DISTANCE
public static final Key<Float> LENS_INFO_HYPERFOCAL_DISTANCE
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 Manifest.permission.CAMERA
is needed to access this property
LENS_INFO_MINIMUM_FOCUS_DISTANCE
public static final Key<Float> LENS_INFO_MINIMUM_FOCUS_DISTANCE
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 Manifest.permission.CAMERA
is needed to access this property
LENS_INTRINSIC_CALIBRATION
public static final Key<float[]> LENS_INTRINSIC_CALIBRATION
The parameters for this camera device's intrinsic calibration.
The five calibration parameters that describe the transform from camera-centric 3D coordinates to sensor pixel coordinates:
[f_x, f_y, c_x, c_y, s]
Where f_x
and f_y
are the horizontal and vertical
focal lengths, [c_x, c_y]
is the position of the optical
axis, and s
is a skew parameter for the sensor plane not
being aligned with the lens plane.
These are typically used within a transformation matrix K:
K = [ f_x, s, c_x,
0, f_y, c_y,
0 0, 1 ]
which can then be combined with the camera pose rotation
R
and translation t
(android.lens.poseRotation
and
android.lens.poseTranslation
, respectively) to calculate the
complete transform from world coordinates to pixel
coordinates:
P = [ K 0 * [ R -Rt
0 1 ] 0 1 ]
(Note the negation of poseTranslation when mapping from camera to world coordinates, and multiplication by the rotation).
With p_w
being a point in the world coordinate system
and p_s
being a point in the camera active pixel array
coordinate system, and with the mapping including the
homogeneous division by z:
p_h = (x_h, y_h, z_h) = P p_w
p_s = p_h / z_h
so [x_s, y_s]
is the pixel coordinates of the world
point, z_s = 1
, and w_s
is a measurement of disparity
(depth) in pixel coordinates.
Note that the coordinate system for this transform is the
android.sensor.info.preCorrectionActiveArraySize
system,
where (0,0)
is the top-left of the
preCorrectionActiveArraySize rectangle. Once the pose and
intrinsic calibration transforms have been applied to a
world point, then the android.lens.distortion
transform needs to be applied, and the result adjusted to
be in the android.sensor.info.activeArraySize
coordinate
system (where (0, 0)
is the top-left of the
activeArraySize rectangle), to determine the final pixel
coordinate of the world point for processed (non-RAW)
output buffers.
For camera devices, the center of pixel (x,y)
is located at
coordinate (x + 0.5, y + 0.5)
. So on a device with a
precorrection active array of size (10,10)
, the valid pixel
indices go from (0,0)-(9,9)
, and an perfectly-built camera would
have an optical center at the exact center of the pixel grid, at
coordinates (5.0, 5.0)
, which is the top-left corner of pixel
(5,5)
.
Units:
Pixels in the
android.sensor.info.preCorrectionActiveArraySize
coordinate system.
Optional - The value for this key may be null
on some devices.
Permission Manifest.permission.CAMERA
is needed to access this property
LENS_INTRINSIC_CALIBRATION_MAXIMUM_RESOLUTION
public static final Key<float[]> LENS_INTRINSIC_CALIBRATION_MAXIMUM_RESOLUTION
The parameters for this camera device's intrinsic
calibration when android.sensor.pixelMode
is set to
CameraMetadata.SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION
.
Analogous to android.lens.intrinsicCalibration
, when android.sensor.pixelMode
is set to
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 Manifest.permission.CAMERA
is needed to access this property
LENS_POSE_REFERENCE
public static final Key<Integer> LENS_POSE_REFERENCE
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:
Optional - The value for this key may be null
on some devices.
Permission Manifest.permission.CAMERA
is needed to access this property
LENS_POSE_ROTATION
public static final Key<float[]> LENS_POSE_ROTATION
The orientation of the camera relative to the sensor coordinate system.
The four coefficients that describe the quaternion rotation from the Android sensor coordinate system to a camera-aligned coordinate system where the X-axis is aligned with the long side of the image sensor, the Y-axis is aligned with the short side of the image sensor, and the Z-axis is aligned with the optical axis of the sensor.
To convert from the quaternion coefficients (x,y,z,w)
to the axis of rotation (a_x, a_y, a_z)
and rotation
amount theta
, the following formulas can be used:
theta = 2 * acos(w)
a_x = x / sin(theta/2)
a_y = y / sin(theta/2)
a_z = z / sin(theta/2)
To create a 3x3 rotation matrix that applies the rotation defined by this quaternion, the following matrix can be used:
R = [ 1 - 2y^2 - 2z^2, 2xy - 2zw, 2xz + 2yw,
2xy + 2zw, 1 - 2x^2 - 2z^2, 2yz - 2xw,
2xz - 2yw, 2yz + 2xw, 1 - 2x^2 - 2y^2 ]
This matrix can then be used to apply the rotation to a column vector point with
p' = Rp
where p
is in the device sensor coordinate system, and
p'
is in the camera-oriented coordinate system.
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 Manifest.permission.CAMERA
is needed to access this property
See also:
LENS_POSE_TRANSLATION
public static final Key<float[]> LENS_POSE_TRANSLATION
Position of the camera optical center.
The position of the camera device's lens optical center,
as a three-dimensional vector (x,y,z)
.
Prior to Android P, or when android.lens.poseReference
is PRIMARY_CAMERA, this position
is relative to the optical center of the largest camera device facing in the same
direction as this camera, in the Android sensor
coordinate axes
. Note that only the axis definitions are shared with the sensor
coordinate system, but not the origin.
If this device is the largest or only camera device with a given facing, then this
position will be (0, 0, 0)
; a camera device with a lens optical center located 3 cm
from the main sensor along the +X axis (to the right from the user's perspective) will
report (0.03, 0, 0)
. Note that this means that, for many computer vision
applications, the position needs to be negated to convert it to a translation from the
camera to the origin.
To transform a pixel coordinates between two cameras facing the same direction, first
the source camera android.lens.distortion
must be corrected for. Then the source
camera android.lens.intrinsicCalibration
needs to be applied, followed by the
android.lens.poseRotation
of the source camera, the translation of the source camera
relative to the destination camera, the android.lens.poseRotation
of the destination
camera, and finally the inverse of android.lens.intrinsicCalibration
of the destination
camera. This obtains a radial-distortion-free coordinate in the destination camera pixel
coordinates.
To compare this against a real image from the destination camera, the destination camera image then needs to be corrected for radial distortion before comparison or sampling.
When android.lens.poseReference
is GYROSCOPE, then this position is relative to
the center of the primary gyroscope on the device. The axis definitions are the same as
with PRIMARY_CAMERA.
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 Manifest.permission.CAMERA
is needed to access this property
LENS_RADIAL_DISTORTION
public static final Key<float[]> LENS_RADIAL_DISTORTION
This field was deprecated
in API level 28.
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:
x_c = x_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
kappa_4 * (2 * x_i * y_i) + kappa_5 * ( r^2 + 2 * x_i^2 )
y_c = y_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
kappa_5 * (2 * x_i * y_i) + kappa_4 * ( r^2 + 2 * y_i^2 )
Here, [x_c, y_c]
are the coordinates to sample in the
input image that correspond to the pixel values in the
corrected image at the coordinate [x_i, y_i]
:
correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)
The pixel coordinates are defined in a normalized
coordinate system related to the
android.lens.intrinsicCalibration
calibration fields.
Both [x_i, y_i]
and [x_c, y_c]
have (0,0)
at the
lens optical center [c_x, c_y]
. The maximum magnitudes
of both x and y coordinates are normalized to be 1 at the
edge further from the optical center, so the range
for both dimensions is -1 <= x <= 1
.
Finally, r
represents the radial distance from the
optical center, r^2 = x_i^2 + y_i^2
, and its magnitude
is therefore no larger than |r| <= sqrt(2)
.
The distortion model used is the Brown-Conrady model.
Units: Unitless coefficients.
Optional - The value for this key may be null
on some devices.
Permission Manifest.permission.CAMERA
is needed to access this property
LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE
public static final Key<Integer> LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE
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:
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
NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
public static final Key<int[]> NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
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
REPROCESS_MAX_CAPTURE_STALL
public static final Key<Integer> REPROCESS_MAX_CAPTURE_STALL
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
REQUEST_AVAILABLE_CAPABILITIES
public static final Key<int[]> REQUEST_AVAILABLE_CAPABILITIES
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:
INFO_SUPPORTED_HARDWARE_LEVEL
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_RAW
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_PRIVATE_REPROCESSING
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_YUV_REPROCESSING
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_CONSTRAINED_HIGH_SPEED_VIDEO
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_MOTION_TRACKING
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_MONOCHROME
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_SECURE_IMAGE_DATA
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_SYSTEM_CAMERA
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_OFFLINE_PROCESSING
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_REMOSAIC_REPROCESSING
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_STREAM_USE_CASE
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_COLOR_SPACE_PROFILES
REQUEST_AVAILABLE_COLOR_SPACE_PROFILES
public static final Key<ColorSpaceProfiles> REQUEST_AVAILABLE_COLOR_SPACE_PROFILES
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
ColorSpaceProfiles.getSupportedColorSpaces(int)
or
ColorSpaceProfiles.getSupportedColorSpacesForDynamicRange(int, long)
.
If a camera does not support the
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT
capability, the dynamic range profile will always be
DynamicRangeProfiles.STANDARD
. Color space
capabilities are queried in combination with an ImageFormat
.
If a camera client wants to know the general color space capabilities of a camera device
regardless of image format, it can specify ImageFormat.UNKNOWN
.
The color space for a session can be configured by setting the SessionConfiguration
color space via SessionConfiguration.setColorSpace(Named)
.
Optional - The value for this key may be null
on some devices.
REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES
public static final Key<DynamicRangeProfiles> REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES
Devices supporting the 10-bit output capability
CameraMetadata.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
DynamicRangeProfiles.getSupportedProfiles()
.
Any of them can be configured by setting OutputConfiguration dynamic range profile in
OutputConfiguration.setDynamicRangeProfile(long)
.
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
DynamicRangeProfiles.getProfileCaptureRequestConstraints(long)
.
Optional - The value for this key may be null
on some devices.
REQUEST_MAX_NUM_INPUT_STREAMS
public static final Key<Integer> 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.
When set to 0, it means no input stream is supported.
The image format for a input stream can be any supported format returned by StreamConfigurationMap.getInputFormats()
. When using an
input stream, there must be at least one output stream configured to to receive the
reprocessed images.
When an input stream and some output streams are used in a reprocessing request, only the input buffer will be used to produce these output stream buffers, and a new sensor image will not be captured.
For example, for Zero Shutter Lag (ZSL) still capture use case, the input stream image format will be PRIVATE, the associated output stream image format should be JPEG.
Range of valid values:
0 or 1.
Optional - 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:
REQUEST_MAX_NUM_OUTPUT_PROC
public static final Key<Integer> 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.
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.
StreamConfigurationMap.isOutputSupportedFor(Class)
Y8
For full guarantees, query StreamConfigurationMap.getOutputStallDuration(int, Size)
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 (
);
>= 2 for LIMITED mode devices (android.info.supportedHardwareLevel
== FULL
).android.info.supportedHardwareLevel
== LIMITED
This key is available on all devices.
REQUEST_MAX_NUM_OUTPUT_PROC_STALLING
public static final Key<Integer> 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.
This value contains the max number of output simultaneous streams for any processed (but not-stalling) formats.
This lists the upper bound of the number of output streams supported by
the camera device. Using more streams simultaneously may require more hardware and
CPU resources that will consume more power. The image format for this kind of an output stream can
be any non-RAW
and supported format provided by android.scaler.streamConfigurationMap
.
A processed and stalling format is defined as any non-RAW format with a stallDurations
> 0. Typically only the JPEG format
is a stalling format.
For full guarantees, query StreamConfigurationMap.getOutputStallDuration(int, Size)
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:
REQUEST_MAX_NUM_OUTPUT_RAW
public static final Key<Integer> 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.
This value contains the max number of output simultaneous streams from the raw sensor.
This lists the upper bound of the number of output streams supported by
the camera device. Using more streams simultaneously may require more hardware and
CPU resources that will consume more power. The image format for this kind of an output stream can
be any RAW
and supported format provided by android.scaler.streamConfigurationMap
.
In particular, a RAW
format is typically one of:
LEGACY mode devices (android.info.supportedHardwareLevel
==
LEGACY)
never support raw streams.
Range of valid values:
>= 0
This key is available on all devices.
REQUEST_PARTIAL_RESULT_COUNT
public static final Key<Integer> REQUEST_PARTIAL_RESULT_COUNT
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
public static final 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.
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:
REQUEST_RECOMMENDED_TEN_BIT_DYNAMIC_RANGE_PROFILE
public static final Key<Long> REQUEST_RECOMMENDED_TEN_BIT_DYNAMIC_RANGE_PROFILE
Recommended 10-bit dynamic range profile.
Devices supporting the 10-bit output capability
CameraMetadata.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
OutputConfiguration.setDynamicRangeProfile(long)
.
Optional - The value for this key may be null
on some devices.
SCALER_AVAILABLE_MAX_DIGITAL_ZOOM
public static final 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
.
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.
SCALER_AVAILABLE_ROTATE_AND_CROP_MODES
public static final Key<int[]> SCALER_AVAILABLE_ROTATE_AND_CROP_MODES
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:
SCALER_AVAILABLE_STREAM_USE_CASES
public static final Key<long[]> SCALER_AVAILABLE_STREAM_USE_CASES
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
OutputConfiguration.setStreamUseCase(long)
.
A camera device with
CameraMetadata.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
CameraMetadata.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:
Optional - The value for this key may be null
on some devices.
See also:
CameraMetadata.SCALER_AVAILABLE_STREAM_USE_CASES_DEFAULT
CameraMetadata.SCALER_AVAILABLE_STREAM_USE_CASES_PREVIEW
CameraMetadata.SCALER_AVAILABLE_STREAM_USE_CASES_STILL_CAPTURE
CameraMetadata.SCALER_AVAILABLE_STREAM_USE_CASES_VIDEO_RECORD
CameraMetadata.SCALER_AVAILABLE_STREAM_USE_CASES_PREVIEW_VIDEO_STILL
CameraMetadata.SCALER_AVAILABLE_STREAM_USE_CASES_VIDEO_CALL
CameraMetadata.SCALER_AVAILABLE_STREAM_USE_CASES_CROPPED_RAW
SCALER_CROPPING_TYPE
public static final Key<Integer> SCALER_CROPPING_TYPE
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 useandroid.scaler.cropRegion
for zoom. - To do CENTER_ONLY zoom, the application has below 2 options:
- Set
android.control.zoomRatio
to 1.0; adjust zoom byandroid.scaler.cropRegion
. - Adjust zoom by
android.control.zoomRatio
; useandroid.scaler.cropRegion
to crop the field of view vertically (letterboxing) or horizontally (pillarboxing), but not windowboxing.
- Set
- Setting
android.control.zoomRatio
to values different than 1.0 andandroid.scaler.cropRegion
to be windowboxing at the same time are not supported. In this case, the camera framework will override theandroid.scaler.cropRegion
to be the active array.
LEGACY capability devices will only support CENTER_ONLY cropping.
Possible values:
This key is available on all devices.
SCALER_DEFAULT_SECURE_IMAGE_SIZE
public static final Key<Size> SCALER_DEFAULT_SECURE_IMAGE_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
StreamConfigurationMap
are supported.
Units: Pixels
Optional - The value for this key may be null
on some devices.
SCALER_MANDATORY_CONCURRENT_STREAM_COMBINATIONS
public static final Key<MandatoryStreamCombination[]> SCALER_MANDATORY_CONCURRENT_STREAM_COMBINATIONS
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
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
CameraManager.getConcurrentCameraIds()
.
Optional - The value for this key may be null
on some devices.
SCALER_MANDATORY_MAXIMUM_RESOLUTION_STREAM_COMBINATIONS
public static final Key<MandatoryStreamCombination[]> SCALER_MANDATORY_MAXIMUM_RESOLUTION_STREAM_COMBINATIONS
An array of mandatory stream combinations which are applicable when
CaptureRequest
has android.sensor.pixelMode
set
to 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
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
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR
device.
Optional - The value for this key may be null
on some devices.
See also:
SCALER_MANDATORY_PREVIEW_STABILIZATION_OUTPUT_STREAM_COMBINATIONS
public static final Key<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
.
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.
SCALER_MANDATORY_STREAM_COMBINATIONS
public static final Key<MandatoryStreamCombination[]> SCALER_MANDATORY_STREAM_COMBINATIONS
An array of mandatory stream combinations generated according to the camera device
INFO_SUPPORTED_HARDWARE_LEVEL
and 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
StreamConfigurationMap.getOutputSizes(int)
are
guaranteed to work.
For a physical camera not independently exposed in
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:
SCALER_MANDATORY_TEN_BIT_OUTPUT_STREAM_COMBINATIONS
public static final Key<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
CameraMetadata.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
CameraMetadata.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
CameraMetadata.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
public static final Key<MandatoryStreamCombination[]> SCALER_MANDATORY_USE_CASE_STREAM_COMBINATIONS
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
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_STREAM_USE_CASE
capability.
The mandatory stream combination array will be null
in case the device doesn't
have CameraMetadata.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
public static final 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.
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 MultiResolutionStreamConfigurationMap.getOutputFormats()
.
A MultiResolutionImageReader
can then be created for a
supported format with the MultiResolutionStreamInfo group queried by MultiResolutionStreamConfigurationMap.getOutputInfo(int)
.
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 MultiResolutionStreamConfigurationMap.getInputFormats()
.
A reprocessable CameraCaptureSession can then be created using an InputConfiguration
constructed with
the input MultiResolutionStreamInfo group, queried by MultiResolutionStreamConfigurationMap.getInputInfo(int)
.
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
public static final 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.
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 |
---|---|---|---|
ImageFormat.JPEG |
android.sensor.info.activeArraySize (*1) |
Any | |
ImageFormat.JPEG |
1920x1080 (1080p) | Any | if 1080p <= activeArraySize |
ImageFormat.JPEG |
1280x720 (720p) | Any | if 720p <= activeArraySize |
ImageFormat.JPEG |
640x480 (480p) | Any | if 480p <= activeArraySize |
ImageFormat.JPEG |
320x240 (240p) | Any | if 240p <= activeArraySize |
ImageFormat.YUV_420_888 |
all output sizes available for JPEG | FULL | |
ImageFormat.YUV_420_888 |
all output sizes available for JPEG, up to the maximum video size | LIMITED | |
ImageFormat.PRIVATE |
same as YUV_420_888 | Any |
For applications targeting SDK version 31 or newer, if the mobile device declares to be
media performance class 12 or higher by setting
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 |
---|---|---|---|
ImageFormat.JPEG |
android.sensor.info.activeArraySize (*1) |
Any | |
ImageFormat.JPEG |
1920x1080 (1080p) | Any | if 1080p <= activeArraySize |
ImageFormat.YUV_420_888 |
android.sensor.info.activeArraySize |
FULL | |
ImageFormat.YUV_420_888 |
1920x1080 (1080p) | FULL | if 1080p <= activeArraySize |
ImageFormat.YUV_420_888 |
1280x720 (720) | FULL | if 720p <= activeArraySize |
ImageFormat.YUV_420_888 |
640x480 (480p) | FULL | if 480p <= activeArraySize |
ImageFormat.YUV_420_888 |
320x240 (240p) | FULL | if 240p <= activeArraySize |
ImageFormat.YUV_420_888 |
all output sizes available for FULL hardware level, up to the maximum video size | LIMITED | |
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
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.
SCALER_STREAM_CONFIGURATION_MAP_MAXIMUM_RESOLUTION
public static final 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
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
CameraMetadata.SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION
.
Optional - The value for this key may be null
on some devices.
SENSOR_AVAILABLE_TEST_PATTERN_MODES
public static final Key<int[]> SENSOR_AVAILABLE_TEST_PATTERN_MODES
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:
SENSOR_BLACK_LEVEL_PATTERN
public static final Key<BlackLevelPattern> SENSOR_BLACK_LEVEL_PATTERN
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.
SENSOR_CALIBRATION_TRANSFORM1
public static final Key<ColorSpaceTransform> SENSOR_CALIBRATION_TRANSFORM1
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 Manifest.permission.CAMERA
is needed to access this property
See also:
SENSOR_CALIBRATION_TRANSFORM2
public static final 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).
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 Manifest.permission.CAMERA
is needed to access this property
See also:
SENSOR_COLOR_TRANSFORM1
public static final Key<ColorSpaceTransform> SENSOR_COLOR_TRANSFORM1
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 Manifest.permission.CAMERA
is needed to access this property
See also:
SENSOR_COLOR_TRANSFORM2
public static final Key<ColorSpaceTransform> SENSOR_COLOR_TRANSFORM2
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 Manifest.permission.CAMERA
is needed to access this property
See also:
SENSOR_FORWARD_MATRIX1
public static final 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.
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 Manifest.permission.CAMERA
is needed to access this property
See also:
SENSOR_FORWARD_MATRIX2
public static final 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.
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 Manifest.permission.CAMERA
is needed to access this property
See also:
SENSOR_INFO_ACTIVE_ARRAY_SIZE
public static final 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.
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.
SENSOR_INFO_ACTIVE_ARRAY_SIZE_MAXIMUM_RESOLUTION
public static final 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.
Analogous to android.sensor.info.activeArraySize
, when android.sensor.pixelMode
is set to
CameraMetadata.SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION
.
Refer to android.sensor.info.activeArraySize
for details, with sensor array related keys
replaced with their
CameraMetadata.SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION
counterparts.
This key will only be present for devices which advertise the
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR
capability or devices where CameraCharacteristics#getAvailableCaptureRequestKeys
lists CaptureRequest.SENSOR_PIXEL_MODE
}
Units: Pixel coordinates on the image sensor
Optional - The value for this key may be null
on some devices.
SENSOR_INFO_BINNING_FACTOR
public static final Key<Size> SENSOR_INFO_BINNING_FACTOR
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
listsCaptureRequest.SENSOR_PIXEL_MODE
}, since RAW images may not necessarily have a regular bayer pattern whenCaptureRequest.SENSOR_PIXEL_MODE
} is set toCameraMetadata.SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION
.
Units: Pixels
Optional - The value for this key may be null
on some devices.
See also:
SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
public static final Key<Integer> 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.
Possible values:
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:
INFO_SUPPORTED_HARDWARE_LEVEL
CameraMetadata.SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB
CameraMetadata.SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG
CameraMetadata.SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG
CameraMetadata.SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR
CameraMetadata.SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB
CameraMetadata.SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_MONO
CameraMetadata.SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_NIR
SENSOR_INFO_EXPOSURE_TIME_RANGE
public static final Key<Range<Long>> SENSOR_INFO_EXPOSURE_TIME_RANGE
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
SENSOR_INFO_LENS_SHADING_APPLIED
public static final Key<Boolean> SENSOR_INFO_LENS_SHADING_APPLIED
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:
SENSOR_INFO_MAX_FRAME_DURATION
public static final 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.
Attempting to use frame durations beyond the maximum will result in the frame duration being clipped to the maximum. See that control for a full definition of frame durations.
Refer to StreamConfigurationMap.getOutputMinFrameDuration(int, Size)
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
SENSOR_INFO_PHYSICAL_SIZE
public static final Key<SizeF> SENSOR_INFO_PHYSICAL_SIZE
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:
SENSOR_INFO_PIXEL_ARRAY_SIZE
public static final Key<Size> SENSOR_INFO_PIXEL_ARRAY_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 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.
SENSOR_INFO_PIXEL_ARRAY_SIZE_MAXIMUM_RESOLUTION
public static final 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.
Analogous to android.sensor.info.pixelArraySize
, when android.sensor.pixelMode
is
set to
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
CameraMetadata.SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION
.
This key will only be present for devices which advertise the
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR
capability or devices where CameraCharacteristics#getAvailableCaptureRequestKeys
lists CaptureRequest.SENSOR_PIXEL_MODE
}
Units: Pixels
Optional - The value for this key may be null
on some devices.
SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
public static final 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.
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
:
- 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. - 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. - 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:
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.
SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE_MAXIMUM_RESOLUTION
public static final 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. This key must be used for crop / metering regions, only when
android.sensor.pixelMode
is set to
CameraMetadata.SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION
.
Analogous to android.sensor.info.preCorrectionActiveArraySize
,
when android.sensor.pixelMode
is set to
CameraMetadata.SENSOR_PIXEL_MODE_MAXIMUM_RESOLUTION
.
This key will only be present for devices which advertise the
CameraMetadata.REQUEST_AVAILABLE_CAPABILITIES_ULTRA_HIGH_RESOLUTION_SENSOR
capability or devices where CameraCharacteristics#getAvailableCaptureRequestKeys
lists CaptureRequest.SENSOR_PIXEL_MODE
}
Units: Pixel coordinates on the image sensor
Optional - The value for this key may be null
on some devices.
SENSOR_INFO_SENSITIVITY_RANGE
public static final Key<Range<Integer>> SENSOR_INFO_SENSITIVITY_RANGE
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
SENSOR_INFO_TIMESTAMP_SOURCE
public static final Key<Integer> SENSOR_INFO_TIMESTAMP_SOURCE
The time base source for sensor capture start timestamps.
The timestamps provided for captures are always in nanoseconds and monotonic, but may not based on a time source that can be compared to other system time sources.
This characteristic defines the source for the timestamps, and therefore whether they can be compared against other system time sources/timestamps.
Possible values:
This key is available on all devices.
SENSOR_INFO_WHITE_LEVEL
public static final Key<Integer> SENSOR_INFO_WHITE_LEVEL
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.
SENSOR_MAX_ANALOG_SENSITIVITY
public static final Key<Integer> SENSOR_MAX_ANALOG_SENSITIVITY
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
SENSOR_OPTICAL_BLACK_REGIONS
public static final Key<Rect[]> SENSOR_OPTICAL_BLACK_REGIONS
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.
SENSOR_ORIENTATION
public static final Key<Integer> SENSOR_ORIENTATION
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
get(Key)
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
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.
SENSOR_READOUT_TIMESTAMP
public static final Key<Integer> SENSOR_READOUT_TIMESTAMP
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
OutputConfiguration.setReadoutTimestampEnabled(boolean)
.
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:
This key is available on all devices.
SENSOR_REFERENCE_ILLUMINANT1
public static final Key<Integer> 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.
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 Manifest.permission.CAMERA
is needed to access this property
See also:
SENSOR_CALIBRATION_TRANSFORM1
SENSOR_COLOR_TRANSFORM1
SENSOR_FORWARD_MATRIX1
SENSOR_REFERENCE_ILLUMINANT2
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_FLASH
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_SHADE
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_D55
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_D65
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_D75
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_D50
CameraMetadata.SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN
SENSOR_REFERENCE_ILLUMINANT2
public static final 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.
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 Manifest.permission.CAMERA
is needed to access this property
SHADING_AVAILABLE_MODES
public static final Key<int[]> SHADING_AVAILABLE_MODES
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:
STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
public static final Key<int[]> STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
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.
STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES
public static final Key<boolean[]> 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.
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.
STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES
public static final Key<int[]> 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.
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.
STATISTICS_INFO_AVAILABLE_OIS_DATA_MODES
public static final Key<int[]> STATISTICS_INFO_AVAILABLE_OIS_DATA_MODES
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:
STATISTICS_INFO_MAX_FACE_COUNT
public static final Key<Integer> STATISTICS_INFO_MAX_FACE_COUNT
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
public static final Key<Integer> 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.
This defines the maximum distance (in number of metadata results), between the frame number of the request that has new controls to apply and the frame number of the result that has all the controls applied.
In other words this acts as an upper boundary for how many frames must occur before the camera device knows for a fact that the new submitted camera settings have been applied in outgoing frames.
Units: Frame counts
Possible values:
Available values for this device:
A positive value, PER_FRAME_CONTROL, or UNKNOWN.
This key is available on all devices.
TONEMAP_AVAILABLE_TONE_MAP_MODES
public static final Key<int[]> TONEMAP_AVAILABLE_TONE_MAP_MODES
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
TONEMAP_MAX_CURVE_POINTS
public static final Key<Integer> TONEMAP_MAX_CURVE_POINTS
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
Public methods
get
public T get (Key<T> key)
Get a camera characteristics field value.
The field definitions can be
found in CameraCharacteristics
.
Parameters | |
---|---|
key |
Key : The characteristics field to read. |
Returns | |
---|---|
T |
The value of that key, or null if the field is not set. |
Throws | |
---|---|
IllegalArgumentException |
if the key was not valid |
getAvailableCaptureRequestKeys
public List<Key<?>> getAvailableCaptureRequestKeys ()
Returns the list of keys supported by this CameraDevice
for querying
with a CaptureRequest
.
The list returned is not modifiable, so any attempts to modify it will throw
a UnsupportedOperationException
.
Each key is only listed once in the list. The order of the keys is undefined.
Note that there is no getAvailableCameraCharacteristicsKeys()
-- use
getKeys()
instead.
Returns | |
---|---|
List<Key<?>> |
List of keys supported by this CameraDevice for CaptureRequests.
This value cannot be null . |
getAvailableCaptureResultKeys
public List<Key<?>> getAvailableCaptureResultKeys ()
Returns the list of keys supported by this CameraDevice
for querying
with a CaptureResult
.
The list returned is not modifiable, so any attempts to modify it will throw
a UnsupportedOperationException
.
Each key is only listed once in the list. The order of the keys is undefined.
Note that there is no getAvailableCameraCharacteristicsKeys()
-- use
getKeys()
instead.
Returns | |
---|---|
List<Key<?>> |
List of keys supported by this CameraDevice for CaptureResults.
This value cannot be null . |
getAvailablePhysicalCameraRequestKeys
public List<Key<?>> getAvailablePhysicalCameraRequestKeys ()
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
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.
Returns | |
---|---|
List<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
public List<Key<?>> getAvailableSessionCharacteristicsKeys ()
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.
Returns | |
---|---|
List<Key<?>> |
List of CameraCharacteristic keys containing characterisitics specific to a session
configuration. If INFO_SESSION_CONFIGURATION_QUERY_VERSION is
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:
getAvailableSessionKeys
public List<Key<?>> getAvailableSessionKeys ()
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
getAvailableSessionKeys()
. - Before triggering the capture session create sequence, a capture request
must be built via
CameraDevice#createCaptureRequest
using an appropriate template matching the particular use case. - The client should go over the list of session parameters and check whether some of the keys listed matches with the parameters that they intend to modify as part of the first capture request.
- If there is no such match, the capture request can be passed
unmodified to
SessionConfiguration#setSessionParameters
. - If matches do exist, the client should update the respective values
and pass the request to
SessionConfiguration#setSessionParameters
. - After the capture session initialization completes the session parameter key list can continue to serve as reference when posting or updating further requests. As mentioned above further changes to session parameters should ideally be avoided, if updates are necessary however clients could expect a delay/glitch during the parameter switch.
The list returned is not modifiable, so any attempts to modify it will throw
a UnsupportedOperationException
.
Each key is only listed once in the list. The order of the keys is undefined.
Returns | |
---|---|
List<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
public List<Key<?>> getKeys ()
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.
Returns | |
---|---|
List<Key<?>> |
This value cannot be null . |
getKeysNeedingPermission
public List<Key<?>> getKeysNeedingPermission ()
Returns a subset of the list returned by getKeys()
with all keys that
require camera clients to obtain the Manifest.permission.CAMERA
permission.
If an application calls CameraManager#getCameraCharacteristics
without holding the
Manifest.permission.CAMERA
permission,
all keys in this list will not be available, and calling get(Key)
will
return null for those keys. If the application obtains the
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.
Returns | |
---|---|
List<Key<?>> |
List of camera characteristic keys that require the
Manifest.permission.CAMERA permission. The list can be empty in case
there are no currently present keys that need additional permission. |
getPhysicalCameraIds
public Set<String> getPhysicalCameraIds ()
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 CameraManager.getCameraIdList()
, and can be opened directly by
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 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
.
Returns | |
---|---|
Set<String> |
Set of physical camera ids for this logical camera device.
This value cannot be null . |
getRecommendedStreamConfigurationMap
public RecommendedStreamConfigurationMap getRecommendedStreamConfigurationMap (int usecase)
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:
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() > 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) && (snapshotConfig != null)) {
Set snapshotSizeSet = snapshotConfig.getOutputSizes(
ImageFormat.JPEG);
Size[] snapshotSizes = new Size[snapshotSizeSet.size()];
snapshotSizes = snapshotSizeSet.toArray(snapshotSizes);
Size suggestedMaxJpegSize = getMaxSize(snapshotSizes);
Set previewSizeSet = snapshotConfig.getOutputSizes(
ImageFormat.PRIVATE);
Size[] previewSizes = new Size[previewSizeSet.size()];
previewSizes = previewSizeSet.toArray(previewSizes);
Size suggestedMaxPreviewSize = getMaxSize(previewSizes);
}
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.
Returns | |
---|---|
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. |
Throws | |
---|---|
IllegalArgumentException |
In case the use case argument is invalid. |
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Last updated 2024-07-18 UTC.