/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @addtogroup Camera
* @{
*/
/**
* @file NdkCameraMetadataTags.h
*/
/*
* This file defines an NDK API.
* Do not remove methods.
* Do not change method signatures.
* Do not change the value of constants.
* Do not change the size of any of the classes defined in here.
* Do not reference types that are not part of the NDK.
* Do not #include files that aren't part of the NDK.
*/
#ifndef _NDK_CAMERA_METADATA_TAGS_H
#define _NDK_CAMERA_METADATA_TAGS_H
#include <sys/cdefs.h>
__BEGIN_DECLS
#if __ANDROID_API__ >= 24
typedef enum acamera_metadata_section {
ACAMERA_COLOR_CORRECTION,
ACAMERA_CONTROL,
ACAMERA_DEMOSAIC,
ACAMERA_EDGE,
ACAMERA_FLASH,
ACAMERA_FLASH_INFO,
ACAMERA_HOT_PIXEL,
ACAMERA_JPEG,
ACAMERA_LENS,
ACAMERA_LENS_INFO,
ACAMERA_NOISE_REDUCTION,
ACAMERA_QUIRKS,
ACAMERA_REQUEST,
ACAMERA_SCALER,
ACAMERA_SENSOR,
ACAMERA_SENSOR_INFO,
ACAMERA_SHADING,
ACAMERA_STATISTICS,
ACAMERA_STATISTICS_INFO,
ACAMERA_TONEMAP,
ACAMERA_LED,
ACAMERA_INFO,
ACAMERA_BLACK_LEVEL,
ACAMERA_SYNC,
ACAMERA_REPROCESS,
ACAMERA_DEPTH,
ACAMERA_SECTION_COUNT,
ACAMERA_VENDOR = 0x8000
} acamera_metadata_section_t;
/**
* Hierarchy positions in enum space.
*/
typedef enum acamera_metadata_section_start {
ACAMERA_COLOR_CORRECTION_START = ACAMERA_COLOR_CORRECTION << 16,
ACAMERA_CONTROL_START = ACAMERA_CONTROL << 16,
ACAMERA_DEMOSAIC_START = ACAMERA_DEMOSAIC << 16,
ACAMERA_EDGE_START = ACAMERA_EDGE << 16,
ACAMERA_FLASH_START = ACAMERA_FLASH << 16,
ACAMERA_FLASH_INFO_START = ACAMERA_FLASH_INFO << 16,
ACAMERA_HOT_PIXEL_START = ACAMERA_HOT_PIXEL << 16,
ACAMERA_JPEG_START = ACAMERA_JPEG << 16,
ACAMERA_LENS_START = ACAMERA_LENS << 16,
ACAMERA_LENS_INFO_START = ACAMERA_LENS_INFO << 16,
ACAMERA_NOISE_REDUCTION_START = ACAMERA_NOISE_REDUCTION << 16,
ACAMERA_QUIRKS_START = ACAMERA_QUIRKS << 16,
ACAMERA_REQUEST_START = ACAMERA_REQUEST << 16,
ACAMERA_SCALER_START = ACAMERA_SCALER << 16,
ACAMERA_SENSOR_START = ACAMERA_SENSOR << 16,
ACAMERA_SENSOR_INFO_START = ACAMERA_SENSOR_INFO << 16,
ACAMERA_SHADING_START = ACAMERA_SHADING << 16,
ACAMERA_STATISTICS_START = ACAMERA_STATISTICS << 16,
ACAMERA_STATISTICS_INFO_START = ACAMERA_STATISTICS_INFO << 16,
ACAMERA_TONEMAP_START = ACAMERA_TONEMAP << 16,
ACAMERA_LED_START = ACAMERA_LED << 16,
ACAMERA_INFO_START = ACAMERA_INFO << 16,
ACAMERA_BLACK_LEVEL_START = ACAMERA_BLACK_LEVEL << 16,
ACAMERA_SYNC_START = ACAMERA_SYNC << 16,
ACAMERA_REPROCESS_START = ACAMERA_REPROCESS << 16,
ACAMERA_DEPTH_START = ACAMERA_DEPTH << 16,
ACAMERA_VENDOR_START = ACAMERA_VENDOR << 16
} acamera_metadata_section_start_t;
/**
* Main enum for camera metadata tags.
*/
typedef enum acamera_metadata_tag {
/**
* <p>The mode control selects how the image data is converted from the
* sensor's native color into linear sRGB color.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>When auto-white balance (AWB) is enabled with ACAMERA_CONTROL_AWB_MODE, this
* control is overridden by the AWB routine. When AWB is disabled, the
* application controls how the color mapping is performed.</p>
* <p>We define the expected processing pipeline below. For consistency
* across devices, this is always the case with TRANSFORM_MATRIX.</p>
* <p>When either FULL or HIGH_QUALITY is used, the camera device may
* do additional processing but ACAMERA_COLOR_CORRECTION_GAINS and
* ACAMERA_COLOR_CORRECTION_TRANSFORM will still be provided by the
* camera device (in the results) and be roughly correct.</p>
* <p>Switching to TRANSFORM_MATRIX and using the data provided from
* FAST or HIGH_QUALITY will yield a picture with the same white point
* as what was produced by the camera device in the earlier frame.</p>
* <p>The expected processing pipeline is as follows:</p>
* <p><img alt="White balance processing pipeline" src="../images/camera2/metadata/android.colorCorrection.mode/processing_pipeline.png" /></p>
* <p>The white balance is encoded by two values, a 4-channel white-balance
* gain vector (applied in the Bayer domain), and a 3x3 color transform
* matrix (applied after demosaic).</p>
* <p>The 4-channel white-balance gains are defined as:</p>
* <pre><code>ACAMERA_COLOR_CORRECTION_GAINS = [ R G_even G_odd B ]
* </code></pre>
* <p>where <code>G_even</code> is the gain for green pixels on even rows of the
* output, and <code>G_odd</code> is the gain for green pixels on the odd rows.
* These may be identical for a given camera device implementation; if
* the camera device does not support a separate gain for even/odd green
* channels, it will use the <code>G_even</code> value, and write <code>G_odd</code> equal to
* <code>G_even</code> in the output result metadata.</p>
* <p>The matrices for color transforms are defined as a 9-entry vector:</p>
* <pre><code>ACAMERA_COLOR_CORRECTION_TRANSFORM = [ I0 I1 I2 I3 I4 I5 I6 I7 I8 ]
* </code></pre>
* <p>which define a transform from input sensor colors, <code>P_in = [ r g b ]</code>,
* to output linear sRGB, <code>P_out = [ r' g' b' ]</code>,</p>
* <p>with colors as follows:</p>
* <pre><code>r' = I0r + I1g + I2b
* g' = I3r + I4g + I5b
* b' = I6r + I7g + I8b
* </code></pre>
* <p>Both the input and output value ranges must match. Overflow/underflow
* values are clipped to fit within the range.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
* @see ACAMERA_CONTROL_AWB_MODE
*/
ACAMERA_COLOR_CORRECTION_MODE = // byte (enum)
ACAMERA_COLOR_CORRECTION_START,
/**
* <p>A color transform matrix to use to transform
* from sensor RGB color space to output linear sRGB color space.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This matrix is either set by the camera device when the request
* ACAMERA_COLOR_CORRECTION_MODE is not TRANSFORM_MATRIX, or
* directly by the application in the request when the
* ACAMERA_COLOR_CORRECTION_MODE is TRANSFORM_MATRIX.</p>
* <p>In the latter case, the camera device may round the matrix to account
* for precision issues; the final rounded matrix should be reported back
* in this matrix result metadata. The transform should keep the magnitude
* of the output color values within <code>[0, 1.0]</code> (assuming input color
* values is within the normalized range <code>[0, 1.0]</code>), or clipping may occur.</p>
* <p>The valid range of each matrix element varies on different devices, but
* values within [-1.5, 3.0] are guaranteed not to be clipped.</p>
*
* @see ACAMERA_COLOR_CORRECTION_MODE
*/
ACAMERA_COLOR_CORRECTION_TRANSFORM = // rational[3*3]
ACAMERA_COLOR_CORRECTION_START + 1,
/**
* <p>Gains applying to Bayer raw color channels for
* white-balance.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>These per-channel gains are either set by the camera device
* when the request ACAMERA_COLOR_CORRECTION_MODE is not
* TRANSFORM_MATRIX, or directly by the application in the
* request when the ACAMERA_COLOR_CORRECTION_MODE is
* TRANSFORM_MATRIX.</p>
* <p>The gains in the result metadata are the gains actually
* applied by the camera device to the current frame.</p>
* <p>The valid range of gains varies on different devices, but gains
* between [1.0, 3.0] are guaranteed not to be clipped. Even if a given
* device allows gains below 1.0, this is usually not recommended because
* this can create color artifacts.</p>
*
* @see ACAMERA_COLOR_CORRECTION_MODE
*/
ACAMERA_COLOR_CORRECTION_GAINS = // float[4]
ACAMERA_COLOR_CORRECTION_START + 2,
/**
* <p>Mode of operation for the chromatic aberration correction algorithm.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Chromatic (color) aberration is caused by the fact that different wavelengths of light
* can not focus on the same point after exiting from the lens. This metadata defines
* the high level control of chromatic aberration correction algorithm, which aims to
* minimize the chromatic artifacts that may occur along the object boundaries in an
* image.</p>
* <p>FAST/HIGH_QUALITY both mean that camera device determined aberration
* correction will be applied. HIGH_QUALITY mode indicates that the camera device will
* use the highest-quality aberration correction algorithms, even if it slows down
* capture rate. FAST means the camera device will not slow down capture rate when
* applying aberration correction.</p>
* <p>LEGACY devices will always be in FAST mode.</p>
*/
ACAMERA_COLOR_CORRECTION_ABERRATION_MODE = // byte (enum)
ACAMERA_COLOR_CORRECTION_START + 3,
/**
* <p>List of aberration correction modes for ACAMERA_COLOR_CORRECTION_ABERRATION_MODE that are
* supported by this camera device.</p>
*
* @see ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This key lists the valid modes for ACAMERA_COLOR_CORRECTION_ABERRATION_MODE. If no
* aberration correction modes are available for a device, this list will solely include
* OFF mode. All camera devices will support either OFF or FAST mode.</p>
* <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always list
* OFF mode. This includes all FULL level devices.</p>
* <p>LEGACY devices will always only support FAST mode.</p>
*
* @see ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
*/
ACAMERA_COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES = // byte[n]
ACAMERA_COLOR_CORRECTION_START + 4,
ACAMERA_COLOR_CORRECTION_END,
/**
* <p>The desired setting for the camera device's auto-exposure
* algorithm's antibanding compensation.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Some kinds of lighting fixtures, such as some fluorescent
* lights, flicker at the rate of the power supply frequency
* (60Hz or 50Hz, depending on country). While this is
* typically not noticeable to a person, it can be visible to
* a camera device. If a camera sets its exposure time to the
* wrong value, the flicker may become visible in the
* viewfinder as flicker or in a final captured image, as a
* set of variable-brightness bands across the image.</p>
* <p>Therefore, the auto-exposure routines of camera devices
* include antibanding routines that ensure that the chosen
* exposure value will not cause such banding. The choice of
* exposure time depends on the rate of flicker, which the
* camera device can detect automatically, or the expected
* rate can be selected by the application using this
* control.</p>
* <p>A given camera device may not support all of the possible
* options for the antibanding mode. The
* ACAMERA_CONTROL_AE_AVAILABLE_ANTIBANDING_MODES key contains
* the available modes for a given camera device.</p>
* <p>AUTO mode is the default if it is available on given
* camera device. When AUTO mode is not available, the
* default will be either 50HZ or 60HZ, and both 50HZ
* and 60HZ will be available.</p>
* <p>If manual exposure control is enabled (by setting
* ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE to OFF),
* then this setting has no effect, and the application must
* ensure it selects exposure times that do not cause banding
* issues. The ACAMERA_STATISTICS_SCENE_FLICKER key can assist
* the application in this.</p>
*
* @see ACAMERA_CONTROL_AE_AVAILABLE_ANTIBANDING_MODES
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_MODE
* @see ACAMERA_STATISTICS_SCENE_FLICKER
*/
ACAMERA_CONTROL_AE_ANTIBANDING_MODE = // byte (enum)
ACAMERA_CONTROL_START,
/**
* <p>Adjustment to auto-exposure (AE) target image
* brightness.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>The adjustment is measured as a count of steps, with the
* step size defined by ACAMERA_CONTROL_AE_COMPENSATION_STEP and the
* allowed range by ACAMERA_CONTROL_AE_COMPENSATION_RANGE.</p>
* <p>For example, if the exposure value (EV) step is 0.333, '6'
* will mean an exposure compensation of +2 EV; -3 will mean an
* exposure compensation of -1 EV. One EV represents a doubling
* of image brightness. Note that this control will only be
* effective if ACAMERA_CONTROL_AE_MODE <code>!=</code> OFF. This control
* will take effect even when ACAMERA_CONTROL_AE_LOCK <code>== true</code>.</p>
* <p>In the event of exposure compensation value being changed, camera device
* may take several frames to reach the newly requested exposure target.
* During that time, ACAMERA_CONTROL_AE_STATE field will be in the SEARCHING
* state. Once the new exposure target is reached, ACAMERA_CONTROL_AE_STATE will
* change from SEARCHING to either CONVERGED, LOCKED (if AE lock is enabled), or
* FLASH_REQUIRED (if the scene is too dark for still capture).</p>
*
* @see ACAMERA_CONTROL_AE_COMPENSATION_RANGE
* @see ACAMERA_CONTROL_AE_COMPENSATION_STEP
* @see ACAMERA_CONTROL_AE_LOCK
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_AE_STATE
*/
ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION = // int32
ACAMERA_CONTROL_START + 1,
/**
* <p>Whether auto-exposure (AE) is currently locked to its latest
* calculated values.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>When set to <code>true</code> (ON), the AE algorithm is locked to its latest parameters,
* and will not change exposure settings until the lock is set to <code>false</code> (OFF).</p>
* <p>Note that even when AE is locked, the flash may be fired if
* the ACAMERA_CONTROL_AE_MODE is ON_AUTO_FLASH /
* ON_ALWAYS_FLASH / ON_AUTO_FLASH_REDEYE.</p>
* <p>When ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION is changed, even if the AE lock
* is ON, the camera device will still adjust its exposure value.</p>
* <p>If AE precapture is triggered (see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER)
* when AE is already locked, the camera device will not change the exposure time
* (ACAMERA_SENSOR_EXPOSURE_TIME) and sensitivity (ACAMERA_SENSOR_SENSITIVITY)
* parameters. The flash may be fired if the ACAMERA_CONTROL_AE_MODE
* is ON_AUTO_FLASH/ON_AUTO_FLASH_REDEYE and the scene is too dark. If the
* ACAMERA_CONTROL_AE_MODE is ON_ALWAYS_FLASH, the scene may become overexposed.
* Similarly, AE precapture trigger CANCEL has no effect when AE is already locked.</p>
* <p>When an AE precapture sequence is triggered, AE unlock will not be able to unlock
* the AE if AE is locked by the camera device internally during precapture metering
* sequence In other words, submitting requests with AE unlock has no effect for an
* ongoing precapture metering sequence. Otherwise, the precapture metering sequence
* will never succeed in a sequence of preview requests where AE lock is always set
* to <code>false</code>.</p>
* <p>Since the camera device has a pipeline of in-flight requests, the settings that
* get locked do not necessarily correspond to the settings that were present in the
* latest capture result received from the camera device, since additional captures
* and AE updates may have occurred even before the result was sent out. If an
* application is switching between automatic and manual control and wishes to eliminate
* any flicker during the switch, the following procedure is recommended:</p>
* <ol>
* <li>Starting in auto-AE mode:</li>
* <li>Lock AE</li>
* <li>Wait for the first result to be output that has the AE locked</li>
* <li>Copy exposure settings from that result into a request, set the request to manual AE</li>
* <li>Submit the capture request, proceed to run manual AE as desired.</li>
* </ol>
* <p>See ACAMERA_CONTROL_AE_STATE for AE lock related state transition details.</p>
*
* @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
* @see ACAMERA_CONTROL_AE_STATE
* @see ACAMERA_SENSOR_EXPOSURE_TIME
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_CONTROL_AE_LOCK = // byte (enum)
ACAMERA_CONTROL_START + 2,
/**
* <p>The desired mode for the camera device's
* auto-exposure routine.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This control is only effective if ACAMERA_CONTROL_MODE is
* AUTO.</p>
* <p>When set to any of the ON modes, the camera device's
* auto-exposure routine is enabled, overriding the
* application's selected exposure time, sensor sensitivity,
* and frame duration (ACAMERA_SENSOR_EXPOSURE_TIME,
* ACAMERA_SENSOR_SENSITIVITY, and
* ACAMERA_SENSOR_FRAME_DURATION). If one of the FLASH modes
* is selected, the camera device's flash unit controls are
* also overridden.</p>
* <p>The FLASH modes are only available if the camera device
* has a flash unit (ACAMERA_FLASH_INFO_AVAILABLE is <code>true</code>).</p>
* <p>If flash TORCH mode is desired, this field must be set to
* ON or OFF, and ACAMERA_FLASH_MODE set to TORCH.</p>
* <p>When set to any of the ON modes, the values chosen by the
* camera device auto-exposure routine for the overridden
* fields for a given capture will be available in its
* CaptureResult.</p>
*
* @see ACAMERA_CONTROL_MODE
* @see ACAMERA_FLASH_INFO_AVAILABLE
* @see ACAMERA_FLASH_MODE
* @see ACAMERA_SENSOR_EXPOSURE_TIME
* @see ACAMERA_SENSOR_FRAME_DURATION
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_CONTROL_AE_MODE = // byte (enum)
ACAMERA_CONTROL_START + 3,
/**
* <p>List of metering areas to use for auto-exposure adjustment.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Not available if android.control.maxRegionsAe is 0.
* Otherwise will always be present.</p>
* <p>The maximum number of regions supported by the device is determined by the value
* of android.control.maxRegionsAe.</p>
* <p>The data representation is int[5 * area_count].
* Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight).
* The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and
* ymax.</p>
* <p>The coordinate system is based on the active pixel array,
* with (0,0) being the top-left pixel in the active pixel array, and
* (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.width - 1,
* ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.height - 1) being the
* bottom-right pixel in the active pixel array.</p>
* <p>The weight must be within <code>[0, 1000]</code>, and represents a weight
* for every pixel in the area. This means that a large metering area
* with the same weight as a smaller area will have more effect in
* the metering result. Metering areas can partially overlap and the
* camera device will add the weights in the overlap region.</p>
* <p>The weights are relative to weights of other exposure metering regions, so if only one
* region is used, all non-zero weights will have the same effect. A region with 0
* weight is ignored.</p>
* <p>If all regions have 0 weight, then no specific metering area needs to be used by the
* camera device.</p>
* <p>If the metering region is outside the used ACAMERA_SCALER_CROP_REGION returned in
* capture result metadata, the camera device will ignore the sections outside the crop
* region and output only the intersection rectangle as the metering region in the result
* metadata. If the region is entirely outside the crop region, it will be ignored and
* not reported in the result metadata.</p>
*
* @see ACAMERA_SCALER_CROP_REGION
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
ACAMERA_CONTROL_AE_REGIONS = // int32[5*area_count]
ACAMERA_CONTROL_START + 4,
/**
* <p>Range over which the auto-exposure routine can
* adjust the capture frame rate to maintain good
* exposure.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Only constrains auto-exposure (AE) algorithm, not
* manual control of ACAMERA_SENSOR_EXPOSURE_TIME and
* ACAMERA_SENSOR_FRAME_DURATION.</p>
*
* @see ACAMERA_SENSOR_EXPOSURE_TIME
* @see ACAMERA_SENSOR_FRAME_DURATION
*/
ACAMERA_CONTROL_AE_TARGET_FPS_RANGE = // int32[2]
ACAMERA_CONTROL_START + 5,
/**
* <p>Whether the camera device will trigger a precapture
* metering sequence when it processes this request.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This entry is normally set to IDLE, or is not
* included at all in the request settings. When included and
* set to START, the camera device will trigger the auto-exposure (AE)
* precapture metering sequence.</p>
* <p>When set to CANCEL, the camera device will cancel any active
* precapture metering trigger, and return to its initial AE state.
* If a precapture metering sequence is already completed, and the camera
* device has implicitly locked the AE for subsequent still capture, the
* CANCEL trigger will unlock the AE and return to its initial AE state.</p>
* <p>The precapture sequence should be triggered before starting a
* high-quality still capture for final metering decisions to
* be made, and for firing pre-capture flash pulses to estimate
* scene brightness and required final capture flash power, when
* the flash is enabled.</p>
* <p>Normally, this entry should be set to START for only a
* single request, and the application should wait until the
* sequence completes before starting a new one.</p>
* <p>When a precapture metering sequence is finished, the camera device
* may lock the auto-exposure routine internally to be able to accurately expose the
* subsequent still capture image (<code>ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE</code>).
* For this case, the AE may not resume normal scan if no subsequent still capture is
* submitted. To ensure that the AE routine restarts normal scan, the application should
* submit a request with <code>ACAMERA_CONTROL_AE_LOCK == true</code>, followed by a request
* with <code>ACAMERA_CONTROL_AE_LOCK == false</code>, if the application decides not to submit a
* still capture request after the precapture sequence completes. Alternatively, for
* API level 23 or newer devices, the CANCEL can be used to unlock the camera device
* internally locked AE if the application doesn't submit a still capture request after
* the AE precapture trigger. Note that, the CANCEL was added in API level 23, and must not
* be used in devices that have earlier API levels.</p>
* <p>The exact effect of auto-exposure (AE) precapture trigger
* depends on the current AE mode and state; see
* ACAMERA_CONTROL_AE_STATE for AE precapture state transition
* details.</p>
* <p>On LEGACY-level devices, the precapture trigger is not supported;
* capturing a high-resolution JPEG image will automatically trigger a
* precapture sequence before the high-resolution capture, including
* potentially firing a pre-capture flash.</p>
* <p>Using the precapture trigger and the auto-focus trigger ACAMERA_CONTROL_AF_TRIGGER
* simultaneously is allowed. However, since these triggers often require cooperation between
* the auto-focus and auto-exposure routines (for example, the may need to be enabled for a
* focus sweep), the camera device may delay acting on a later trigger until the previous
* trigger has been fully handled. This may lead to longer intervals between the trigger and
* changes to ACAMERA_CONTROL_AE_STATE indicating the start of the precapture sequence, for
* example.</p>
* <p>If both the precapture and the auto-focus trigger are activated on the same request, then
* the camera device will complete them in the optimal order for that device.</p>
*
* @see ACAMERA_CONTROL_AE_LOCK
* @see ACAMERA_CONTROL_AE_STATE
* @see ACAMERA_CONTROL_AF_TRIGGER
* @see ACAMERA_CONTROL_CAPTURE_INTENT
*/
ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER = // byte (enum)
ACAMERA_CONTROL_START + 6,
/**
* <p>Whether auto-focus (AF) is currently enabled, and what
* mode it is set to.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Only effective if ACAMERA_CONTROL_MODE = AUTO and the lens is not fixed focus
* (i.e. <code>ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE > 0</code>). Also note that
* when ACAMERA_CONTROL_AE_MODE is OFF, the behavior of AF is device
* dependent. It is recommended to lock AF by using ACAMERA_CONTROL_AF_TRIGGER before
* setting ACAMERA_CONTROL_AE_MODE to OFF, or set AF mode to OFF when AE is OFF.</p>
* <p>If the lens is controlled by the camera device auto-focus algorithm,
* the camera device will report the current AF status in ACAMERA_CONTROL_AF_STATE
* in result metadata.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_AF_STATE
* @see ACAMERA_CONTROL_AF_TRIGGER
* @see ACAMERA_CONTROL_MODE
* @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
*/
ACAMERA_CONTROL_AF_MODE = // byte (enum)
ACAMERA_CONTROL_START + 7,
/**
* <p>List of metering areas to use for auto-focus.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Not available if android.control.maxRegionsAf is 0.
* Otherwise will always be present.</p>
* <p>The maximum number of focus areas supported by the device is determined by the value
* of android.control.maxRegionsAf.</p>
* <p>The data representation is int[5 * area_count].
* Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight).
* The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and
* ymax.</p>
* <p>The coordinate system is based on the active pixel array,
* with (0,0) being the top-left pixel in the active pixel array, and
* (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.width - 1,
* ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.height - 1) being the
* bottom-right pixel in the active pixel array.</p>
* <p>The weight must be within <code>[0, 1000]</code>, and represents a weight
* for every pixel in the area. This means that a large metering area
* with the same weight as a smaller area will have more effect in
* the metering result. Metering areas can partially overlap and the
* camera device will add the weights in the overlap region.</p>
* <p>The weights are relative to weights of other metering regions, so if only one region
* is used, all non-zero weights will have the same effect. A region with 0 weight is
* ignored.</p>
* <p>If all regions have 0 weight, then no specific metering area needs to be used by the
* camera device.</p>
* <p>If the metering region is outside the used ACAMERA_SCALER_CROP_REGION returned in
* capture result metadata, the camera device will ignore the sections outside the crop
* region and output only the intersection rectangle as the metering region in the result
* metadata. If the region is entirely outside the crop region, it will be ignored and
* not reported in the result metadata.</p>
*
* @see ACAMERA_SCALER_CROP_REGION
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
ACAMERA_CONTROL_AF_REGIONS = // int32[5*area_count]
ACAMERA_CONTROL_START + 8,
/**
* <p>Whether the camera device will trigger autofocus for this request.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This entry is normally set to IDLE, or is not
* included at all in the request settings.</p>
* <p>When included and set to START, the camera device will trigger the
* autofocus algorithm. If autofocus is disabled, this trigger has no effect.</p>
* <p>When set to CANCEL, the camera device will cancel any active trigger,
* and return to its initial AF state.</p>
* <p>Generally, applications should set this entry to START or CANCEL for only a
* single capture, and then return it to IDLE (or not set at all). Specifying
* START for multiple captures in a row means restarting the AF operation over
* and over again.</p>
* <p>See ACAMERA_CONTROL_AF_STATE for what the trigger means for each AF mode.</p>
* <p>Using the autofocus trigger and the precapture trigger ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
* simultaneously is allowed. However, since these triggers often require cooperation between
* the auto-focus and auto-exposure routines (for example, the may need to be enabled for a
* focus sweep), the camera device may delay acting on a later trigger until the previous
* trigger has been fully handled. This may lead to longer intervals between the trigger and
* changes to ACAMERA_CONTROL_AF_STATE, for example.</p>
*
* @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
* @see ACAMERA_CONTROL_AF_STATE
*/
ACAMERA_CONTROL_AF_TRIGGER = // byte (enum)
ACAMERA_CONTROL_START + 9,
/**
* <p>Whether auto-white balance (AWB) is currently locked to its
* latest calculated values.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>When set to <code>true</code> (ON), the AWB algorithm is locked to its latest parameters,
* and will not change color balance settings until the lock is set to <code>false</code> (OFF).</p>
* <p>Since the camera device has a pipeline of in-flight requests, the settings that
* get locked do not necessarily correspond to the settings that were present in the
* latest capture result received from the camera device, since additional captures
* and AWB updates may have occurred even before the result was sent out. If an
* application is switching between automatic and manual control and wishes to eliminate
* any flicker during the switch, the following procedure is recommended:</p>
* <ol>
* <li>Starting in auto-AWB mode:</li>
* <li>Lock AWB</li>
* <li>Wait for the first result to be output that has the AWB locked</li>
* <li>Copy AWB settings from that result into a request, set the request to manual AWB</li>
* <li>Submit the capture request, proceed to run manual AWB as desired.</li>
* </ol>
* <p>Note that AWB lock is only meaningful when
* ACAMERA_CONTROL_AWB_MODE is in the AUTO mode; in other modes,
* AWB is already fixed to a specific setting.</p>
* <p>Some LEGACY devices may not support ON; the value is then overridden to OFF.</p>
*
* @see ACAMERA_CONTROL_AWB_MODE
*/
ACAMERA_CONTROL_AWB_LOCK = // byte (enum)
ACAMERA_CONTROL_START + 10,
/**
* <p>Whether auto-white balance (AWB) is currently setting the color
* transform fields, and what its illumination target
* is.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This control is only effective if ACAMERA_CONTROL_MODE is AUTO.</p>
* <p>When set to the ON mode, the camera device's auto-white balance
* routine is enabled, overriding the application's selected
* ACAMERA_COLOR_CORRECTION_TRANSFORM, ACAMERA_COLOR_CORRECTION_GAINS and
* ACAMERA_COLOR_CORRECTION_MODE. Note that when ACAMERA_CONTROL_AE_MODE
* is OFF, the behavior of AWB is device dependent. It is recommened to
* also set AWB mode to OFF or lock AWB by using ACAMERA_CONTROL_AWB_LOCK before
* setting AE mode to OFF.</p>
* <p>When set to the OFF mode, the camera device's auto-white balance
* routine is disabled. The application manually controls the white
* balance by ACAMERA_COLOR_CORRECTION_TRANSFORM, ACAMERA_COLOR_CORRECTION_GAINS
* and ACAMERA_COLOR_CORRECTION_MODE.</p>
* <p>When set to any other modes, the camera device's auto-white
* balance routine is disabled. The camera device uses each
* particular illumination target for white balance
* adjustment. The application's values for
* ACAMERA_COLOR_CORRECTION_TRANSFORM,
* ACAMERA_COLOR_CORRECTION_GAINS and
* ACAMERA_COLOR_CORRECTION_MODE are ignored.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_MODE
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_AWB_LOCK
* @see ACAMERA_CONTROL_MODE
*/
ACAMERA_CONTROL_AWB_MODE = // byte (enum)
ACAMERA_CONTROL_START + 11,
/**
* <p>List of metering areas to use for auto-white-balance illuminant
* estimation.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Not available if android.control.maxRegionsAwb is 0.
* Otherwise will always be present.</p>
* <p>The maximum number of regions supported by the device is determined by the value
* of android.control.maxRegionsAwb.</p>
* <p>The data representation is int[5 * area_count].
* Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight).
* The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and
* ymax.</p>
* <p>The coordinate system is based on the active pixel array,
* with (0,0) being the top-left pixel in the active pixel array, and
* (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.width - 1,
* ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.height - 1) being the
* bottom-right pixel in the active pixel array.</p>
* <p>The weight must range from 0 to 1000, and represents a weight
* for every pixel in the area. This means that a large metering area
* with the same weight as a smaller area will have more effect in
* the metering result. Metering areas can partially overlap and the
* camera device will add the weights in the overlap region.</p>
* <p>The weights are relative to weights of other white balance metering regions, so if
* only one region is used, all non-zero weights will have the same effect. A region with
* 0 weight is ignored.</p>
* <p>If all regions have 0 weight, then no specific metering area needs to be used by the
* camera device.</p>
* <p>If the metering region is outside the used ACAMERA_SCALER_CROP_REGION returned in
* capture result metadata, the camera device will ignore the sections outside the crop
* region and output only the intersection rectangle as the metering region in the result
* metadata. If the region is entirely outside the crop region, it will be ignored and
* not reported in the result metadata.</p>
*
* @see ACAMERA_SCALER_CROP_REGION
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
ACAMERA_CONTROL_AWB_REGIONS = // int32[5*area_count]
ACAMERA_CONTROL_START + 12,
/**
* <p>Information to the camera device 3A (auto-exposure,
* auto-focus, auto-white balance) routines about the purpose
* of this capture, to help the camera device to decide optimal 3A
* strategy.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This control (except for MANUAL) is only effective if
* <code>ACAMERA_CONTROL_MODE != OFF</code> and any 3A routine is active.</p>
* <p>ZERO_SHUTTER_LAG will be supported if ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
* contains PRIVATE_REPROCESSING or YUV_REPROCESSING. MANUAL will be supported if
* ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains MANUAL_SENSOR. Other intent values are
* always supported.</p>
*
* @see ACAMERA_CONTROL_MODE
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
*/
ACAMERA_CONTROL_CAPTURE_INTENT = // byte (enum)
ACAMERA_CONTROL_START + 13,
/**
* <p>A special color effect to apply.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>When this mode is set, a color effect will be applied
* to images produced by the camera device. The interpretation
* and implementation of these color effects is left to the
* implementor of the camera device, and should not be
* depended on to be consistent (or present) across all
* devices.</p>
*/
ACAMERA_CONTROL_EFFECT_MODE = // byte (enum)
ACAMERA_CONTROL_START + 14,
/**
* <p>Overall mode of 3A (auto-exposure, auto-white-balance, auto-focus) control
* routines.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This is a top-level 3A control switch. When set to OFF, all 3A control
* by the camera device is disabled. The application must set the fields for
* capture parameters itself.</p>
* <p>When set to AUTO, the individual algorithm controls in
* ACAMERA_CONTROL_* are in effect, such as ACAMERA_CONTROL_AF_MODE.</p>
* <p>When set to USE_SCENE_MODE, the individual controls in
* ACAMERA_CONTROL_* are mostly disabled, and the camera device implements
* one of the scene mode settings (such as ACTION, SUNSET, or PARTY)
* as it wishes. The camera device scene mode 3A settings are provided by
* capture results {@link ACameraMetadata} from
* {@link ACameraCaptureSession_captureCallback_result}.</p>
* <p>When set to OFF_KEEP_STATE, it is similar to OFF mode, the only difference
* is that this frame will not be used by camera device background 3A statistics
* update, as if this frame is never captured. This mode can be used in the scenario
* where the application doesn't want a 3A manual control capture to affect
* the subsequent auto 3A capture results.</p>
*
* @see ACAMERA_CONTROL_AF_MODE
*/
ACAMERA_CONTROL_MODE = // byte (enum)
ACAMERA_CONTROL_START + 15,
/**
* <p>Control for which scene mode is currently active.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Scene modes are custom camera modes optimized for a certain set of conditions and
* capture settings.</p>
* <p>This is the mode that that is active when
* <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code>. Aside from FACE_PRIORITY, these modes will
* disable ACAMERA_CONTROL_AE_MODE, ACAMERA_CONTROL_AWB_MODE, and ACAMERA_CONTROL_AF_MODE
* while in use.</p>
* <p>The interpretation and implementation of these scene modes is left
* to the implementor of the camera device. Their behavior will not be
* consistent across all devices, and any given device may only implement
* a subset of these modes.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_AF_MODE
* @see ACAMERA_CONTROL_AWB_MODE
* @see ACAMERA_CONTROL_MODE
*/
ACAMERA_CONTROL_SCENE_MODE = // byte (enum)
ACAMERA_CONTROL_START + 16,
/**
* <p>Whether video stabilization is
* active.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Video stabilization automatically warps images from
* the camera in order to stabilize motion between consecutive frames.</p>
* <p>If enabled, video stabilization can modify the
* ACAMERA_SCALER_CROP_REGION to keep the video stream stabilized.</p>
* <p>Switching between different video stabilization modes may take several
* frames to initialize, the camera device will report the current mode
* in capture result metadata. For example, When "ON" mode is requested,
* the video stabilization modes in the first several capture results may
* still be "OFF", and it will become "ON" when the initialization is
* done.</p>
* <p>In addition, not all recording sizes or frame rates may be supported for
* stabilization by a device that reports stabilization support. It is guaranteed
* that an output targeting a MediaRecorder or MediaCodec will be stabilized if
* the recording resolution is less than or equal to 1920 x 1080 (width less than
* or equal to 1920, height less than or equal to 1080), and the recording
* frame rate is less than or equal to 30fps. At other sizes, the CaptureResult
* ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE field will return
* OFF if the recording output is not stabilized, or if there are no output
* Surface types that can be stabilized.</p>
* <p>If a camera device supports both this mode and OIS
* (ACAMERA_LENS_OPTICAL_STABILIZATION_MODE), turning both modes on may
* produce undesirable interaction, so it is recommended not to enable
* both at the same time.</p>
*
* @see ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
* @see ACAMERA_LENS_OPTICAL_STABILIZATION_MODE
* @see ACAMERA_SCALER_CROP_REGION
*/
ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE = // byte (enum)
ACAMERA_CONTROL_START + 17,
/**
* <p>List of auto-exposure antibanding modes for ACAMERA_CONTROL_AE_ANTIBANDING_MODE that are
* supported by this camera device.</p>
*
* @see ACAMERA_CONTROL_AE_ANTIBANDING_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Not all of the auto-exposure anti-banding modes may be
* supported by a given camera device. This field lists the
* valid anti-banding modes that the application may request
* for this camera device with the
* ACAMERA_CONTROL_AE_ANTIBANDING_MODE control.</p>
*
* @see ACAMERA_CONTROL_AE_ANTIBANDING_MODE
*/
ACAMERA_CONTROL_AE_AVAILABLE_ANTIBANDING_MODES = // byte[n]
ACAMERA_CONTROL_START + 18,
/**
* <p>List of auto-exposure modes for ACAMERA_CONTROL_AE_MODE that are supported by this camera
* device.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Not all the auto-exposure modes may be supported by a
* given camera device, especially if no flash unit is
* available. This entry lists the valid modes for
* ACAMERA_CONTROL_AE_MODE for this camera device.</p>
* <p>All camera devices support ON, and all camera devices with flash
* units support ON_AUTO_FLASH and ON_ALWAYS_FLASH.</p>
* <p>FULL mode camera devices always support OFF mode,
* which enables application control of camera exposure time,
* sensitivity, and frame duration.</p>
* <p>LEGACY mode camera devices never support OFF mode.
* LIMITED mode devices support OFF if they support the MANUAL_SENSOR
* capability.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
*/
ACAMERA_CONTROL_AE_AVAILABLE_MODES = // byte[n]
ACAMERA_CONTROL_START + 19,
/**
* <p>List of frame rate ranges for ACAMERA_CONTROL_AE_TARGET_FPS_RANGE supported by
* this camera device.</p>
*
* @see ACAMERA_CONTROL_AE_TARGET_FPS_RANGE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>For devices at the LEGACY level or above:</p>
* <ul>
* <li>
* <p>For constant-framerate recording, for each normal
* <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a>, that is, a
* <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a> that has
* <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#quality">quality</a>
* in the range [
* <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#QUALITY_LOW">QUALITY_LOW</a>,
* <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#QUALITY_2160P">QUALITY_2160P</a>],
* if the profile is supported by the device and has
* <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#videoFrameRate">videoFrameRate</a>
* <code>x</code>, this list will always include (<code>x</code>,<code>x</code>).</p>
* </li>
* <li>
* <p>Also, a camera device must either not support any
* <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a>,
* or support at least one
* normal <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a>
* that has
* <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#videoFrameRate">videoFrameRate</a> <code>x</code> >= 24.</p>
* </li>
* </ul>
* <p>For devices at the LIMITED level or above:</p>
* <ul>
* <li>For YUV_420_888 burst capture use case, this list will always include (<code>min</code>, <code>max</code>)
* and (<code>max</code>, <code>max</code>) where <code>min</code> <= 15 and <code>max</code> = the maximum output frame rate of the
* maximum YUV_420_888 output size.</li>
* </ul>
*/
ACAMERA_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES = // int32[2*n]
ACAMERA_CONTROL_START + 20,
/**
* <p>Maximum and minimum exposure compensation values for
* ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION, in counts of ACAMERA_CONTROL_AE_COMPENSATION_STEP,
* that are supported by this camera device.</p>
*
* @see ACAMERA_CONTROL_AE_COMPENSATION_STEP
* @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>None</p>
*/
ACAMERA_CONTROL_AE_COMPENSATION_RANGE = // int32[2]
ACAMERA_CONTROL_START + 21,
/**
* <p>Smallest step by which the exposure compensation
* can be changed.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This is the unit for ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION. For example, if this key has
* a value of <code>1/2</code>, then a setting of <code>-2</code> for ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION means
* that the target EV offset for the auto-exposure routine is -1 EV.</p>
* <p>One unit of EV compensation changes the brightness of the captured image by a factor
* of two. +1 EV doubles the image brightness, while -1 EV halves the image brightness.</p>
*
* @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
*/
ACAMERA_CONTROL_AE_COMPENSATION_STEP = // rational
ACAMERA_CONTROL_START + 22,
/**
* <p>List of auto-focus (AF) modes for ACAMERA_CONTROL_AF_MODE that are
* supported by this camera device.</p>
*
* @see ACAMERA_CONTROL_AF_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Not all the auto-focus modes may be supported by a
* given camera device. This entry lists the valid modes for
* ACAMERA_CONTROL_AF_MODE for this camera device.</p>
* <p>All LIMITED and FULL mode camera devices will support OFF mode, and all
* camera devices with adjustable focuser units
* (<code>ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE > 0</code>) will support AUTO mode.</p>
* <p>LEGACY devices will support OFF mode only if they support
* focusing to infinity (by also setting ACAMERA_LENS_FOCUS_DISTANCE to
* <code>0.0f</code>).</p>
*
* @see ACAMERA_CONTROL_AF_MODE
* @see ACAMERA_LENS_FOCUS_DISTANCE
* @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
*/
ACAMERA_CONTROL_AF_AVAILABLE_MODES = // byte[n]
ACAMERA_CONTROL_START + 23,
/**
* <p>List of color effects for ACAMERA_CONTROL_EFFECT_MODE that are supported by this camera
* device.</p>
*
* @see ACAMERA_CONTROL_EFFECT_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This list contains the color effect modes that can be applied to
* images produced by the camera device.
* Implementations are not expected to be consistent across all devices.
* If no color effect modes are available for a device, this will only list
* OFF.</p>
* <p>A color effect will only be applied if
* ACAMERA_CONTROL_MODE != OFF. OFF is always included in this list.</p>
* <p>This control has no effect on the operation of other control routines such
* as auto-exposure, white balance, or focus.</p>
*
* @see ACAMERA_CONTROL_MODE
*/
ACAMERA_CONTROL_AVAILABLE_EFFECTS = // byte[n]
ACAMERA_CONTROL_START + 24,
/**
* <p>List of scene modes for ACAMERA_CONTROL_SCENE_MODE that are supported by this camera
* device.</p>
*
* @see ACAMERA_CONTROL_SCENE_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This list contains scene modes that can be set for the camera device.
* Only scene modes that have been fully implemented for the
* camera device may be included here. Implementations are not expected
* to be consistent across all devices.</p>
* <p>If no scene modes are supported by the camera device, this
* will be set to DISABLED. Otherwise DISABLED will not be listed.</p>
* <p>FACE_PRIORITY is always listed if face detection is
* supported (i.e.<code>ACAMERA_STATISTICS_INFO_MAX_FACE_COUNT >
* 0</code>).</p>
*
* @see ACAMERA_STATISTICS_INFO_MAX_FACE_COUNT
*/
ACAMERA_CONTROL_AVAILABLE_SCENE_MODES = // byte[n]
ACAMERA_CONTROL_START + 25,
/**
* <p>List of video stabilization modes for ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
* that are supported by this camera device.</p>
*
* @see ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>OFF will always be listed.</p>
*/
ACAMERA_CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES = // byte[n]
ACAMERA_CONTROL_START + 26,
/**
* <p>List of auto-white-balance modes for ACAMERA_CONTROL_AWB_MODE that are supported by this
* camera device.</p>
*
* @see ACAMERA_CONTROL_AWB_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Not all the auto-white-balance modes may be supported by a
* given camera device. This entry lists the valid modes for
* ACAMERA_CONTROL_AWB_MODE for this camera device.</p>
* <p>All camera devices will support ON mode.</p>
* <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always support OFF
* mode, which enables application control of white balance, by using
* ACAMERA_COLOR_CORRECTION_TRANSFORM and ACAMERA_COLOR_CORRECTION_GAINS(ACAMERA_COLOR_CORRECTION_MODE must be set to TRANSFORM_MATRIX). This includes all FULL
* mode camera devices.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_MODE
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
* @see ACAMERA_CONTROL_AWB_MODE
*/
ACAMERA_CONTROL_AWB_AVAILABLE_MODES = // byte[n]
ACAMERA_CONTROL_START + 27,
/**
* <p>List of the maximum number of regions that can be used for metering in
* auto-exposure (AE), auto-white balance (AWB), and auto-focus (AF);
* this corresponds to the the maximum number of elements in
* ACAMERA_CONTROL_AE_REGIONS, ACAMERA_CONTROL_AWB_REGIONS,
* and ACAMERA_CONTROL_AF_REGIONS.</p>
*
* @see ACAMERA_CONTROL_AE_REGIONS
* @see ACAMERA_CONTROL_AF_REGIONS
* @see ACAMERA_CONTROL_AWB_REGIONS
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>None</p>
*/
ACAMERA_CONTROL_MAX_REGIONS = // int32[3]
ACAMERA_CONTROL_START + 28,
/**
* <p>Current state of the auto-exposure (AE) algorithm.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>Switching between or enabling AE modes (ACAMERA_CONTROL_AE_MODE) always
* resets the AE state to INACTIVE. Similarly, switching between ACAMERA_CONTROL_MODE,
* or ACAMERA_CONTROL_SCENE_MODE if <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code> resets all
* the algorithm states to INACTIVE.</p>
* <p>The camera device can do several state transitions between two results, if it is
* allowed by the state transition table. For example: INACTIVE may never actually be
* seen in a result.</p>
* <p>The state in the result is the state for this image (in sync with this image): if
* AE state becomes CONVERGED, then the image data associated with this result should
* be good to use.</p>
* <p>Below are state transition tables for different AE modes.</p>
* <p>State | Transition Cause | New State | Notes
* :------------:|:----------------:|:---------:|:-----------------------:
* INACTIVE | | INACTIVE | Camera device auto exposure algorithm is disabled</p>
* <p>When ACAMERA_CONTROL_AE_MODE is AE_MODE_ON_*:</p>
* <p>State | Transition Cause | New State | Notes
* :-------------:|:--------------------------------------------:|:--------------:|:-----------------:
* INACTIVE | Camera device initiates AE scan | SEARCHING | Values changing
* INACTIVE | ACAMERA_CONTROL_AE_LOCK is ON | LOCKED | Values locked
* SEARCHING | Camera device finishes AE scan | CONVERGED | Good values, not changing
* SEARCHING | Camera device finishes AE scan | FLASH_REQUIRED | Converged but too dark w/o flash
* SEARCHING | ACAMERA_CONTROL_AE_LOCK is ON | LOCKED | Values locked
* CONVERGED | Camera device initiates AE scan | SEARCHING | Values changing
* CONVERGED | ACAMERA_CONTROL_AE_LOCK is ON | LOCKED | Values locked
* FLASH_REQUIRED | Camera device initiates AE scan | SEARCHING | Values changing
* FLASH_REQUIRED | ACAMERA_CONTROL_AE_LOCK is ON | LOCKED | Values locked
* LOCKED | ACAMERA_CONTROL_AE_LOCK is OFF | SEARCHING | Values not good after unlock
* LOCKED | ACAMERA_CONTROL_AE_LOCK is OFF | CONVERGED | Values good after unlock
* LOCKED | ACAMERA_CONTROL_AE_LOCK is OFF | FLASH_REQUIRED | Exposure good, but too dark
* PRECAPTURE | Sequence done. ACAMERA_CONTROL_AE_LOCK is OFF | CONVERGED | Ready for high-quality capture
* PRECAPTURE | Sequence done. ACAMERA_CONTROL_AE_LOCK is ON | LOCKED | Ready for high-quality capture
* LOCKED | aeLock is ON and aePrecaptureTrigger is START | LOCKED | Precapture trigger is ignored when AE is already locked
* LOCKED | aeLock is ON and aePrecaptureTrigger is CANCEL| LOCKED | Precapture trigger is ignored when AE is already locked
* Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START | PRECAPTURE | Start AE precapture metering sequence
* Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL| INACTIVE | Currently active precapture metering sequence is canceled</p>
* <p>For the above table, the camera device may skip reporting any state changes that happen
* without application intervention (i.e. mode switch, trigger, locking). Any state that
* can be skipped in that manner is called a transient state.</p>
* <p>For example, for above AE modes (AE_MODE_ON_*), in addition to the state transitions
* listed in above table, it is also legal for the camera device to skip one or more
* transient states between two results. See below table for examples:</p>
* <p>State | Transition Cause | New State | Notes
* :-------------:|:-----------------------------------------------------------:|:--------------:|:-----------------:
* INACTIVE | Camera device finished AE scan | CONVERGED | Values are already good, transient states are skipped by camera device.
* Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START, sequence done | FLASH_REQUIRED | Converged but too dark w/o flash after a precapture sequence, transient states are skipped by camera device.
* Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START, sequence done | CONVERGED | Converged after a precapture sequence, transient states are skipped by camera device.
* Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL, converged | FLASH_REQUIRED | Converged but too dark w/o flash after a precapture sequence is canceled, transient states are skipped by camera device.
* Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL, converged | CONVERGED | Converged after a precapture sequenceis canceled, transient states are skipped by camera device.
* CONVERGED | Camera device finished AE scan | FLASH_REQUIRED | Converged but too dark w/o flash after a new scan, transient states are skipped by camera device.
* FLASH_REQUIRED | Camera device finished AE scan | CONVERGED | Converged after a new scan, transient states are skipped by camera device.</p>
*
* @see ACAMERA_CONTROL_AE_LOCK
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
* @see ACAMERA_CONTROL_MODE
* @see ACAMERA_CONTROL_SCENE_MODE
*/
ACAMERA_CONTROL_AE_STATE = // byte (enum)
ACAMERA_CONTROL_START + 31,
/**
* <p>Current state of auto-focus (AF) algorithm.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>Switching between or enabling AF modes (ACAMERA_CONTROL_AF_MODE) always
* resets the AF state to INACTIVE. Similarly, switching between ACAMERA_CONTROL_MODE,
* or ACAMERA_CONTROL_SCENE_MODE if <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code> resets all
* the algorithm states to INACTIVE.</p>
* <p>The camera device can do several state transitions between two results, if it is
* allowed by the state transition table. For example: INACTIVE may never actually be
* seen in a result.</p>
* <p>The state in the result is the state for this image (in sync with this image): if
* AF state becomes FOCUSED, then the image data associated with this result should
* be sharp.</p>
* <p>Below are state transition tables for different AF modes.</p>
* <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_OFF or AF_MODE_EDOF:</p>
* <p>State | Transition Cause | New State | Notes
* :------------:|:----------------:|:---------:|:-----------:
* INACTIVE | | INACTIVE | Never changes</p>
* <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_AUTO or AF_MODE_MACRO:</p>
* <p>State | Transition Cause | New State | Notes
* :-----------------:|:----------------:|:------------------:|:--------------:
* INACTIVE | AF_TRIGGER | ACTIVE_SCAN | Start AF sweep, Lens now moving
* ACTIVE_SCAN | AF sweep done | FOCUSED_LOCKED | Focused, Lens now locked
* ACTIVE_SCAN | AF sweep done | NOT_FOCUSED_LOCKED | Not focused, Lens now locked
* ACTIVE_SCAN | AF_CANCEL | INACTIVE | Cancel/reset AF, Lens now locked
* FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Cancel/reset AF
* FOCUSED_LOCKED | AF_TRIGGER | ACTIVE_SCAN | Start new sweep, Lens now moving
* NOT_FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Cancel/reset AF
* NOT_FOCUSED_LOCKED | AF_TRIGGER | ACTIVE_SCAN | Start new sweep, Lens now moving
* Any state | Mode change | INACTIVE |</p>
* <p>For the above table, the camera device may skip reporting any state changes that happen
* without application intervention (i.e. mode switch, trigger, locking). Any state that
* can be skipped in that manner is called a transient state.</p>
* <p>For example, for these AF modes (AF_MODE_AUTO and AF_MODE_MACRO), in addition to the
* state transitions listed in above table, it is also legal for the camera device to skip
* one or more transient states between two results. See below table for examples:</p>
* <p>State | Transition Cause | New State | Notes
* :-----------------:|:----------------:|:------------------:|:--------------:
* INACTIVE | AF_TRIGGER | FOCUSED_LOCKED | Focus is already good or good after a scan, lens is now locked.
* INACTIVE | AF_TRIGGER | NOT_FOCUSED_LOCKED | Focus failed after a scan, lens is now locked.
* FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | Focus is already good or good after a scan, lens is now locked.
* NOT_FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | Focus is good after a scan, lens is not locked.</p>
* <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_CONTINUOUS_VIDEO:</p>
* <p>State | Transition Cause | New State | Notes
* :-----------------:|:-----------------------------------:|:------------------:|:--------------:
* INACTIVE | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
* INACTIVE | AF_TRIGGER | NOT_FOCUSED_LOCKED | AF state query, Lens now locked
* PASSIVE_SCAN | Camera device completes current scan| PASSIVE_FOCUSED | End AF scan, Lens now locked
* PASSIVE_SCAN | Camera device fails current scan | PASSIVE_UNFOCUSED | End AF scan, Lens now locked
* PASSIVE_SCAN | AF_TRIGGER | FOCUSED_LOCKED | Immediate transition, if focus is good. Lens now locked
* PASSIVE_SCAN | AF_TRIGGER | NOT_FOCUSED_LOCKED | Immediate transition, if focus is bad. Lens now locked
* PASSIVE_SCAN | AF_CANCEL | INACTIVE | Reset lens position, Lens now locked
* PASSIVE_FOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
* PASSIVE_UNFOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
* PASSIVE_FOCUSED | AF_TRIGGER | FOCUSED_LOCKED | Immediate transition, lens now locked
* PASSIVE_UNFOCUSED | AF_TRIGGER | NOT_FOCUSED_LOCKED | Immediate transition, lens now locked
* FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | No effect
* FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan
* NOT_FOCUSED_LOCKED | AF_TRIGGER | NOT_FOCUSED_LOCKED | No effect
* NOT_FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan</p>
* <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_CONTINUOUS_PICTURE:</p>
* <p>State | Transition Cause | New State | Notes
* :-----------------:|:------------------------------------:|:------------------:|:--------------:
* INACTIVE | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
* INACTIVE | AF_TRIGGER | NOT_FOCUSED_LOCKED | AF state query, Lens now locked
* PASSIVE_SCAN | Camera device completes current scan | PASSIVE_FOCUSED | End AF scan, Lens now locked
* PASSIVE_SCAN | Camera device fails current scan | PASSIVE_UNFOCUSED | End AF scan, Lens now locked
* PASSIVE_SCAN | AF_TRIGGER | FOCUSED_LOCKED | Eventual transition once the focus is good. Lens now locked
* PASSIVE_SCAN | AF_TRIGGER | NOT_FOCUSED_LOCKED | Eventual transition if cannot find focus. Lens now locked
* PASSIVE_SCAN | AF_CANCEL | INACTIVE | Reset lens position, Lens now locked
* PASSIVE_FOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
* PASSIVE_UNFOCUSED | Camera device initiates new scan | PASSIVE_SCAN | Start AF scan, Lens now moving
* PASSIVE_FOCUSED | AF_TRIGGER | FOCUSED_LOCKED | Immediate trans. Lens now locked
* PASSIVE_UNFOCUSED | AF_TRIGGER | NOT_FOCUSED_LOCKED | Immediate trans. Lens now locked
* FOCUSED_LOCKED | AF_TRIGGER | FOCUSED_LOCKED | No effect
* FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan
* NOT_FOCUSED_LOCKED | AF_TRIGGER | NOT_FOCUSED_LOCKED | No effect
* NOT_FOCUSED_LOCKED | AF_CANCEL | INACTIVE | Restart AF scan</p>
* <p>When switch between AF_MODE_CONTINUOUS_* (CAF modes) and AF_MODE_AUTO/AF_MODE_MACRO
* (AUTO modes), the initial INACTIVE or PASSIVE_SCAN states may be skipped by the
* camera device. When a trigger is included in a mode switch request, the trigger
* will be evaluated in the context of the new mode in the request.
* See below table for examples:</p>
* <p>State | Transition Cause | New State | Notes
* :-----------:|:--------------------------------------:|:----------------------------------------:|:--------------:
* any state | CAF-->AUTO mode switch | INACTIVE | Mode switch without trigger, initial state must be INACTIVE
* any state | CAF-->AUTO mode switch with AF_TRIGGER | trigger-reachable states from INACTIVE | Mode switch with trigger, INACTIVE is skipped
* any state | AUTO-->CAF mode switch | passively reachable states from INACTIVE | Mode switch without trigger, passive transient state is skipped</p>
*
* @see ACAMERA_CONTROL_AF_MODE
* @see ACAMERA_CONTROL_MODE
* @see ACAMERA_CONTROL_SCENE_MODE
*/
ACAMERA_CONTROL_AF_STATE = // byte (enum)
ACAMERA_CONTROL_START + 32,
/**
* <p>Current state of auto-white balance (AWB) algorithm.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>Switching between or enabling AWB modes (ACAMERA_CONTROL_AWB_MODE) always
* resets the AWB state to INACTIVE. Similarly, switching between ACAMERA_CONTROL_MODE,
* or ACAMERA_CONTROL_SCENE_MODE if <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code> resets all
* the algorithm states to INACTIVE.</p>
* <p>The camera device can do several state transitions between two results, if it is
* allowed by the state transition table. So INACTIVE may never actually be seen in
* a result.</p>
* <p>The state in the result is the state for this image (in sync with this image): if
* AWB state becomes CONVERGED, then the image data associated with this result should
* be good to use.</p>
* <p>Below are state transition tables for different AWB modes.</p>
* <p>When <code>ACAMERA_CONTROL_AWB_MODE != AWB_MODE_AUTO</code>:</p>
* <p>State | Transition Cause | New State | Notes
* :------------:|:----------------:|:---------:|:-----------------------:
* INACTIVE | |INACTIVE |Camera device auto white balance algorithm is disabled</p>
* <p>When ACAMERA_CONTROL_AWB_MODE is AWB_MODE_AUTO:</p>
* <p>State | Transition Cause | New State | Notes
* :-------------:|:--------------------------------:|:-------------:|:-----------------:
* INACTIVE | Camera device initiates AWB scan | SEARCHING | Values changing
* INACTIVE | ACAMERA_CONTROL_AWB_LOCK is ON | LOCKED | Values locked
* SEARCHING | Camera device finishes AWB scan | CONVERGED | Good values, not changing
* SEARCHING | ACAMERA_CONTROL_AWB_LOCK is ON | LOCKED | Values locked
* CONVERGED | Camera device initiates AWB scan | SEARCHING | Values changing
* CONVERGED | ACAMERA_CONTROL_AWB_LOCK is ON | LOCKED | Values locked
* LOCKED | ACAMERA_CONTROL_AWB_LOCK is OFF | SEARCHING | Values not good after unlock</p>
* <p>For the above table, the camera device may skip reporting any state changes that happen
* without application intervention (i.e. mode switch, trigger, locking). Any state that
* can be skipped in that manner is called a transient state.</p>
* <p>For example, for this AWB mode (AWB_MODE_AUTO), in addition to the state transitions
* listed in above table, it is also legal for the camera device to skip one or more
* transient states between two results. See below table for examples:</p>
* <p>State | Transition Cause | New State | Notes
* :-------------:|:--------------------------------:|:-------------:|:-----------------:
* INACTIVE | Camera device finished AWB scan | CONVERGED | Values are already good, transient states are skipped by camera device.
* LOCKED | ACAMERA_CONTROL_AWB_LOCK is OFF | CONVERGED | Values good after unlock, transient states are skipped by camera device.</p>
*
* @see ACAMERA_CONTROL_AWB_LOCK
* @see ACAMERA_CONTROL_AWB_MODE
* @see ACAMERA_CONTROL_MODE
* @see ACAMERA_CONTROL_SCENE_MODE
*/
ACAMERA_CONTROL_AWB_STATE = // byte (enum)
ACAMERA_CONTROL_START + 34,
/**
* <p>Whether the camera device supports ACAMERA_CONTROL_AE_LOCK</p>
*
* @see ACAMERA_CONTROL_AE_LOCK
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Devices with MANUAL_SENSOR capability or BURST_CAPTURE capability will always
* list <code>true</code>. This includes FULL devices.</p>
*/
ACAMERA_CONTROL_AE_LOCK_AVAILABLE = // byte (enum)
ACAMERA_CONTROL_START + 36,
/**
* <p>Whether the camera device supports ACAMERA_CONTROL_AWB_LOCK</p>
*
* @see ACAMERA_CONTROL_AWB_LOCK
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Devices with MANUAL_POST_PROCESSING capability or BURST_CAPTURE capability will
* always list <code>true</code>. This includes FULL devices.</p>
*/
ACAMERA_CONTROL_AWB_LOCK_AVAILABLE = // byte (enum)
ACAMERA_CONTROL_START + 37,
/**
* <p>List of control modes for ACAMERA_CONTROL_MODE that are supported by this camera
* device.</p>
*
* @see ACAMERA_CONTROL_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This list contains control modes that can be set for the camera device.
* LEGACY mode devices will always support AUTO mode. LIMITED and FULL
* devices will always support OFF, AUTO modes.</p>
*/
ACAMERA_CONTROL_AVAILABLE_MODES = // byte[n]
ACAMERA_CONTROL_START + 38,
/**
* <p>Range of boosts for ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST supported
* by this camera device.</p>
*
* @see ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Devices support post RAW sensitivity boost will advertise
* ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST key for controling
* post RAW sensitivity boost.</p>
* <p>This key will be <code>null</code> for devices that do not support any RAW format
* outputs. For devices that do support RAW format outputs, this key will always
* present, and if a device does not support post RAW sensitivity boost, it will
* list <code>(100, 100)</code> in this key.</p>
*
* @see ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST
*/
ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE = // int32[2]
ACAMERA_CONTROL_START + 39,
/**
* <p>The amount of additional sensitivity boost applied to output images
* after RAW sensor data is captured.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Some camera devices support additional digital sensitivity boosting in the
* camera processing pipeline after sensor RAW image is captured.
* Such a boost will be applied to YUV/JPEG format output images but will not
* have effect on RAW output formats like RAW_SENSOR, RAW10, RAW12 or RAW_OPAQUE.</p>
* <p>This key will be <code>null</code> for devices that do not support any RAW format
* outputs. For devices that do support RAW format outputs, this key will always
* present, and if a device does not support post RAW sensitivity boost, it will
* list <code>100</code> in this key.</p>
* <p>If the camera device cannot apply the exact boost requested, it will reduce the
* boost to the nearest supported value.
* The final boost value used will be available in the output capture result.</p>
* <p>For devices that support post RAW sensitivity boost, the YUV/JPEG output images
* of such device will have the total sensitivity of
* <code>ACAMERA_SENSOR_SENSITIVITY * ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST / 100</code>
* The sensitivity of RAW format images will always be <code>ACAMERA_SENSOR_SENSITIVITY</code></p>
* <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
* OFF; otherwise the auto-exposure algorithm will override this value.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_MODE
* @see ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST = // int32
ACAMERA_CONTROL_START + 40,
/**
* <p>Allow camera device to enable zero-shutter-lag mode for requests with
* ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE.</p>
*
* @see ACAMERA_CONTROL_CAPTURE_INTENT
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>If enableZsl is <code>true</code>, the camera device may enable zero-shutter-lag mode for requests with
* STILL_CAPTURE capture intent. The camera device may use images captured in the past to
* produce output images for a zero-shutter-lag request. The result metadata including the
* ACAMERA_SENSOR_TIMESTAMP reflects the source frames used to produce output images.
* Therefore, the contents of the output images and the result metadata may be out of order
* compared to previous regular requests. enableZsl does not affect requests with other
* capture intents.</p>
* <p>For example, when requests are submitted in the following order:
* Request A: enableZsl is <code>true</code>, ACAMERA_CONTROL_CAPTURE_INTENT is PREVIEW
* Request B: enableZsl is <code>true</code>, ACAMERA_CONTROL_CAPTURE_INTENT is STILL_CAPTURE</p>
* <p>The output images for request B may have contents captured before the output images for
* request A, and the result metadata for request B may be older than the result metadata for
* request A.</p>
* <p>Note that when enableZsl is <code>true</code>, it is not guaranteed to get output images captured in the
* past for requests with STILL_CAPTURE capture intent.</p>
* <p>For applications targeting SDK versions O and newer, the value of enableZsl in
* TEMPLATE_STILL_CAPTURE template may be <code>true</code>. The value in other templates is always
* <code>false</code> if present.</p>
* <p>For applications targeting SDK versions older than O, the value of enableZsl in all
* capture templates is always <code>false</code> if present.</p>
* <p>For application-operated ZSL, use CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
*
* @see ACAMERA_CONTROL_CAPTURE_INTENT
* @see ACAMERA_SENSOR_TIMESTAMP
*/
ACAMERA_CONTROL_ENABLE_ZSL = // byte (enum)
ACAMERA_CONTROL_START + 41,
ACAMERA_CONTROL_END,
/**
* <p>Operation mode for edge
* enhancement.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Edge enhancement improves sharpness and details in the captured image. OFF means
* no enhancement will be applied by the camera device.</p>
* <p>FAST/HIGH_QUALITY both mean camera device determined enhancement
* will be applied. HIGH_QUALITY mode indicates that the
* camera device will use the highest-quality enhancement algorithms,
* even if it slows down capture rate. FAST means the camera device will
* not slow down capture rate when applying edge enhancement. FAST may be the same as OFF if
* edge enhancement will slow down capture rate. Every output stream will have a similar
* amount of enhancement applied.</p>
* <p>ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular
* buffer of high-resolution images during preview and reprocess image(s) from that buffer
* into a final capture when triggered by the user. In this mode, the camera device applies
* edge enhancement to low-resolution streams (below maximum recording resolution) to
* maximize preview quality, but does not apply edge enhancement to high-resolution streams,
* since those will be reprocessed later if necessary.</p>
* <p>For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera
* device will apply FAST/HIGH_QUALITY YUV-domain edge enhancement, respectively.
* The camera device may adjust its internal edge enhancement parameters for best
* image quality based on the android.reprocess.effectiveExposureFactor, if it is set.</p>
*/
ACAMERA_EDGE_MODE = // byte (enum)
ACAMERA_EDGE_START,
/**
* <p>List of edge enhancement modes for ACAMERA_EDGE_MODE that are supported by this camera
* device.</p>
*
* @see ACAMERA_EDGE_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Full-capability camera devices must always support OFF; camera devices that support
* YUV_REPROCESSING or PRIVATE_REPROCESSING will list ZERO_SHUTTER_LAG; all devices will
* list FAST.</p>
*/
ACAMERA_EDGE_AVAILABLE_EDGE_MODES = // byte[n]
ACAMERA_EDGE_START + 2,
ACAMERA_EDGE_END,
/**
* <p>The desired mode for for the camera device's flash control.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This control is only effective when flash unit is available
* (<code>ACAMERA_FLASH_INFO_AVAILABLE == true</code>).</p>
* <p>When this control is used, the ACAMERA_CONTROL_AE_MODE must be set to ON or OFF.
* Otherwise, the camera device auto-exposure related flash control (ON_AUTO_FLASH,
* ON_ALWAYS_FLASH, or ON_AUTO_FLASH_REDEYE) will override this control.</p>
* <p>When set to OFF, the camera device will not fire flash for this capture.</p>
* <p>When set to SINGLE, the camera device will fire flash regardless of the camera
* device's auto-exposure routine's result. When used in still capture case, this
* control should be used along with auto-exposure (AE) precapture metering sequence
* (ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER), otherwise, the image may be incorrectly exposed.</p>
* <p>When set to TORCH, the flash will be on continuously. This mode can be used
* for use cases such as preview, auto-focus assist, still capture, or video recording.</p>
* <p>The flash status will be reported by ACAMERA_FLASH_STATE in the capture result metadata.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
* @see ACAMERA_FLASH_INFO_AVAILABLE
* @see ACAMERA_FLASH_STATE
*/
ACAMERA_FLASH_MODE = // byte (enum)
ACAMERA_FLASH_START + 2,
/**
* <p>Current state of the flash
* unit.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>When the camera device doesn't have flash unit
* (i.e. <code>ACAMERA_FLASH_INFO_AVAILABLE == false</code>), this state will always be UNAVAILABLE.
* Other states indicate the current flash status.</p>
* <p>In certain conditions, this will be available on LEGACY devices:</p>
* <ul>
* <li>Flash-less cameras always return UNAVAILABLE.</li>
* <li>Using ACAMERA_CONTROL_AE_MODE <code>==</code> ON_ALWAYS_FLASH
* will always return FIRED.</li>
* <li>Using ACAMERA_FLASH_MODE <code>==</code> TORCH
* will always return FIRED.</li>
* </ul>
* <p>In all other conditions the state will not be available on
* LEGACY devices (i.e. it will be <code>null</code>).</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_FLASH_INFO_AVAILABLE
* @see ACAMERA_FLASH_MODE
*/
ACAMERA_FLASH_STATE = // byte (enum)
ACAMERA_FLASH_START + 5,
ACAMERA_FLASH_END,
/**
* <p>Whether this camera device has a
* flash unit.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Will be <code>false</code> if no flash is available.</p>
* <p>If there is no flash unit, none of the flash controls do
* anything.</p>
*/
ACAMERA_FLASH_INFO_AVAILABLE = // byte (enum)
ACAMERA_FLASH_INFO_START,
ACAMERA_FLASH_INFO_END,
/**
* <p>Operational mode for hot pixel correction.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Hotpixel correction interpolates out, or otherwise removes, pixels
* that do not accurately measure the incoming light (i.e. pixels that
* are stuck at an arbitrary value or are oversensitive).</p>
*/
ACAMERA_HOT_PIXEL_MODE = // byte (enum)
ACAMERA_HOT_PIXEL_START,
/**
* <p>List of hot pixel correction modes for ACAMERA_HOT_PIXEL_MODE that are supported by this
* camera device.</p>
*
* @see ACAMERA_HOT_PIXEL_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>FULL mode camera devices will always support FAST.</p>
*/
ACAMERA_HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES = // byte[n]
ACAMERA_HOT_PIXEL_START + 1,
ACAMERA_HOT_PIXEL_END,
/**
* <p>GPS coordinates to include in output JPEG
* EXIF.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>None</p>
*/
ACAMERA_JPEG_GPS_COORDINATES = // double[3]
ACAMERA_JPEG_START,
/**
* <p>32 characters describing GPS algorithm to
* include in EXIF.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>None</p>
*/
ACAMERA_JPEG_GPS_PROCESSING_METHOD = // byte
ACAMERA_JPEG_START + 1,
/**
* <p>Time GPS fix was made to include in
* EXIF.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>None</p>
*/
ACAMERA_JPEG_GPS_TIMESTAMP = // int64
ACAMERA_JPEG_START + 2,
/**
* <p>The orientation for a JPEG image.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>The clockwise rotation angle in degrees, relative to the orientation
* to the camera, that the JPEG picture needs to be rotated by, to be viewed
* upright.</p>
* <p>Camera devices may either encode this value into the JPEG EXIF header, or
* rotate the image data to match this orientation. When the image data is rotated,
* the thumbnail data will also be rotated.</p>
* <p>Note that this orientation is relative to the orientation of the camera sensor, given
* by ACAMERA_SENSOR_ORIENTATION.</p>
* <p>To translate from the device orientation given by the Android sensor APIs, the following
* sample code may be used:</p>
* <pre><code>private int getJpegOrientation(CameraCharacteristics c, int deviceOrientation) {
* if (deviceOrientation == android.view.OrientationEventListener.ORIENTATION_UNKNOWN) return 0;
* int sensorOrientation = c.get(CameraCharacteristics.SENSOR_ORIENTATION);
*
* // Round device orientation to a multiple of 90
* deviceOrientation = (deviceOrientation + 45) / 90 * 90;
*
* // Reverse device orientation for front-facing cameras
* boolean facingFront = c.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_FRONT;
* if (facingFront) deviceOrientation = -deviceOrientation;
*
* // Calculate desired JPEG orientation relative to camera orientation to make
* // the image upright relative to the device orientation
* int jpegOrientation = (sensorOrientation + deviceOrientation + 360) % 360;
*
* return jpegOrientation;
* }
* </code></pre>
*
* @see ACAMERA_SENSOR_ORIENTATION
*/
ACAMERA_JPEG_ORIENTATION = // int32
ACAMERA_JPEG_START + 3,
/**
* <p>Compression quality of the final JPEG
* image.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>85-95 is typical usage range.</p>
*/
ACAMERA_JPEG_QUALITY = // byte
ACAMERA_JPEG_START + 4,
/**
* <p>Compression quality of JPEG
* thumbnail.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>None</p>
*/
ACAMERA_JPEG_THUMBNAIL_QUALITY = // byte
ACAMERA_JPEG_START + 5,
/**
* <p>Resolution of embedded JPEG thumbnail.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>When set to (0, 0) value, the JPEG EXIF will not contain thumbnail,
* but the captured JPEG will still be a valid image.</p>
* <p>For best results, when issuing a request for a JPEG image, the thumbnail size selected
* should have the same aspect ratio as the main JPEG output.</p>
* <p>If the thumbnail image aspect ratio differs from the JPEG primary image aspect
* ratio, the camera device creates the thumbnail by cropping it from the primary image.
* For example, if the primary image has 4:3 aspect ratio, the thumbnail image has
* 16:9 aspect ratio, the primary image will be cropped vertically (letterbox) to
* generate the thumbnail image. The thumbnail image will always have a smaller Field
* Of View (FOV) than the primary image when aspect ratios differ.</p>
* <p>When an ACAMERA_JPEG_ORIENTATION of non-zero degree is requested,
* the camera device will handle thumbnail rotation in one of the following ways:</p>
* <ul>
* <li>Set the
* <a href="https://developer.android.com/reference/android/media/ExifInterface.html#TAG_ORIENTATION">EXIF orientation flag</a>
* and keep jpeg and thumbnail image data unrotated.</li>
* <li>Rotate the jpeg and thumbnail image data and not set
* <a href="https://developer.android.com/reference/android/media/ExifInterface.html#TAG_ORIENTATION">EXIF orientation flag</a>.
* In this case, LIMITED or FULL hardware level devices will report rotated thumnail size
* in capture result, so the width and height will be interchanged if 90 or 270 degree
* orientation is requested. LEGACY device will always report unrotated thumbnail size.</li>
* </ul>
*
* @see ACAMERA_JPEG_ORIENTATION
*/
ACAMERA_JPEG_THUMBNAIL_SIZE = // int32[2]
ACAMERA_JPEG_START + 6,
/**
* <p>List of JPEG thumbnail sizes for ACAMERA_JPEG_THUMBNAIL_SIZE supported by this
* camera device.</p>
*
* @see ACAMERA_JPEG_THUMBNAIL_SIZE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This list will include at least one non-zero resolution, plus <code>(0,0)</code> for indicating no
* thumbnail should be generated.</p>
* <p>Below condiditions will be satisfied for this size list:</p>
* <ul>
* <li>The sizes will be sorted by increasing pixel area (width x height).
* If several resolutions have the same area, they will be sorted by increasing width.</li>
* <li>The aspect ratio of the largest thumbnail size will be same as the
* aspect ratio of largest JPEG output size in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS.
* The largest size is defined as the size that has the largest pixel area
* in a given size list.</li>
* <li>Each output JPEG size in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS will have at least
* one corresponding size that has the same aspect ratio in availableThumbnailSizes,
* and vice versa.</li>
* <li>All non-<code>(0, 0)</code> sizes will have non-zero widths and heights.</li>
* </ul>
*
* @see ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
*/
ACAMERA_JPEG_AVAILABLE_THUMBNAIL_SIZES = // int32[2*n]
ACAMERA_JPEG_START + 7,
ACAMERA_JPEG_END,
/**
* <p>The desired lens aperture size, as a ratio of lens focal length to the
* effective aperture diameter.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Setting this value is only supported on the camera devices that have a variable
* aperture lens.</p>
* <p>When this is supported and ACAMERA_CONTROL_AE_MODE is OFF,
* this can be set along with ACAMERA_SENSOR_EXPOSURE_TIME,
* ACAMERA_SENSOR_SENSITIVITY, and ACAMERA_SENSOR_FRAME_DURATION
* to achieve manual exposure control.</p>
* <p>The requested aperture value may take several frames to reach the
* requested value; the camera device will report the current (intermediate)
* aperture size in capture result metadata while the aperture is changing.
* While the aperture is still changing, ACAMERA_LENS_STATE will be set to MOVING.</p>
* <p>When this is supported and ACAMERA_CONTROL_AE_MODE is one of
* the ON modes, this will be overridden by the camera device
* auto-exposure algorithm, the overridden values are then provided
* back to the user in the corresponding result.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_LENS_STATE
* @see ACAMERA_SENSOR_EXPOSURE_TIME
* @see ACAMERA_SENSOR_FRAME_DURATION
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_LENS_APERTURE = // float
ACAMERA_LENS_START,
/**
* <p>The desired setting for the lens neutral density filter(s).</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This control will not be supported on most camera devices.</p>
* <p>Lens filters are typically used to lower the amount of light the
* sensor is exposed to (measured in steps of EV). As used here, an EV
* step is the standard logarithmic representation, which are
* non-negative, and inversely proportional to the amount of light
* hitting the sensor. For example, setting this to 0 would result
* in no reduction of the incoming light, and setting this to 2 would
* mean that the filter is set to reduce incoming light by two stops
* (allowing 1/4 of the prior amount of light to the sensor).</p>
* <p>It may take several frames before the lens filter density changes
* to the requested value. While the filter density is still changing,
* ACAMERA_LENS_STATE will be set to MOVING.</p>
*
* @see ACAMERA_LENS_STATE
*/
ACAMERA_LENS_FILTER_DENSITY = // float
ACAMERA_LENS_START + 1,
/**
* <p>The desired lens focal length; used for optical zoom.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This setting controls the physical focal length of the camera
* device's lens. Changing the focal length changes the field of
* view of the camera device, and is usually used for optical zoom.</p>
* <p>Like ACAMERA_LENS_FOCUS_DISTANCE and ACAMERA_LENS_APERTURE, this
* setting won't be applied instantaneously, and it may take several
* frames before the lens can change to the requested focal length.
* While the focal length is still changing, ACAMERA_LENS_STATE will
* be set to MOVING.</p>
* <p>Optical zoom will not be supported on most devices.</p>
*
* @see ACAMERA_LENS_APERTURE
* @see ACAMERA_LENS_FOCUS_DISTANCE
* @see ACAMERA_LENS_STATE
*/
ACAMERA_LENS_FOCAL_LENGTH = // float
ACAMERA_LENS_START + 2,
/**
* <p>Desired distance to plane of sharpest focus,
* measured from frontmost surface of the lens.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Should be zero for fixed-focus cameras</p>
*/
ACAMERA_LENS_FOCUS_DISTANCE = // float
ACAMERA_LENS_START + 3,
/**
* <p>Sets whether the camera device uses optical image stabilization (OIS)
* when capturing images.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>OIS is used to compensate for motion blur due to small
* movements of the camera during capture. Unlike digital image
* stabilization (ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE), OIS
* makes use of mechanical elements to stabilize the camera
* sensor, and thus allows for longer exposure times before
* camera shake becomes apparent.</p>
* <p>Switching between different optical stabilization modes may take several
* frames to initialize, the camera device will report the current mode in
* capture result metadata. For example, When "ON" mode is requested, the
* optical stabilization modes in the first several capture results may still
* be "OFF", and it will become "ON" when the initialization is done.</p>
* <p>If a camera device supports both OIS and digital image stabilization
* (ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE), turning both modes on may produce undesirable
* interaction, so it is recommended not to enable both at the same time.</p>
* <p>Not all devices will support OIS; see
* ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION for
* available controls.</p>
*
* @see ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
* @see ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
*/
ACAMERA_LENS_OPTICAL_STABILIZATION_MODE = // byte (enum)
ACAMERA_LENS_START + 4,
/**
* <p>Direction the camera faces relative to
* device screen.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>None</p>
*/
ACAMERA_LENS_FACING = // byte (enum)
ACAMERA_LENS_START + 5,
/**
* <p>The orientation of the camera relative to the sensor
* coordinate system.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>The four coefficients that describe the quaternion
* rotation from the Android sensor coordinate system to a
* camera-aligned coordinate system where the X-axis is
* aligned with the long side of the image sensor, the Y-axis
* is aligned with the short side of the image sensor, and
* the Z-axis is aligned with the optical axis of the sensor.</p>
* <p>To convert from the quaternion coefficients <code>(x,y,z,w)</code>
* to the axis of rotation <code>(a_x, a_y, a_z)</code> and rotation
* amount <code>theta</code>, the following formulas can be used:</p>
* <pre><code> theta = 2 * acos(w)
* a_x = x / sin(theta/2)
* a_y = y / sin(theta/2)
* a_z = z / sin(theta/2)
* </code></pre>
* <p>To create a 3x3 rotation matrix that applies the rotation
* defined by this quaternion, the following matrix can be
* used:</p>
* <pre><code>R = [ 1 - 2y^2 - 2z^2, 2xy - 2zw, 2xz + 2yw,
* 2xy + 2zw, 1 - 2x^2 - 2z^2, 2yz - 2xw,
* 2xz - 2yw, 2yz + 2xw, 1 - 2x^2 - 2y^2 ]
* </code></pre>
* <p>This matrix can then be used to apply the rotation to a
* column vector point with</p>
* <p><code>p' = Rp</code></p>
* <p>where <code>p</code> is in the device sensor coordinate system, and
* <code>p'</code> is in the camera-oriented coordinate system.</p>
*/
ACAMERA_LENS_POSE_ROTATION = // float[4]
ACAMERA_LENS_START + 6,
/**
* <p>Position of the camera optical center.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>The position of the camera device's lens optical center,
* as a three-dimensional vector <code>(x,y,z)</code>, relative to the
* optical center of the largest camera device facing in the
* same direction as this camera, in the
* <a href="https://developer.android.com/reference/android/hardware/SensorEvent.html">Android sensor coordinate axes</a>.
* Note that only the axis definitions are shared with
* the sensor coordinate system, but not the origin.</p>
* <p>If this device is the largest or only camera device with a
* given facing, then this position will be <code>(0, 0, 0)</code>; a
* camera device with a lens optical center located 3 cm from
* the main sensor along the +X axis (to the right from the
* user's perspective) will report <code>(0.03, 0, 0)</code>.</p>
* <p>To transform a pixel coordinates between two cameras
* facing the same direction, first the source camera
* ACAMERA_LENS_RADIAL_DISTORTION must be corrected for. Then
* the source camera ACAMERA_LENS_INTRINSIC_CALIBRATION needs
* to be applied, followed by the ACAMERA_LENS_POSE_ROTATION
* of the source camera, the translation of the source camera
* relative to the destination camera, the
* ACAMERA_LENS_POSE_ROTATION of the destination camera, and
* finally the inverse of ACAMERA_LENS_INTRINSIC_CALIBRATION
* of the destination camera. This obtains a
* radial-distortion-free coordinate in the destination
* camera pixel coordinates.</p>
* <p>To compare this against a real image from the destination
* camera, the destination camera image then needs to be
* corrected for radial distortion before comparison or
* sampling.</p>
*
* @see ACAMERA_LENS_INTRINSIC_CALIBRATION
* @see ACAMERA_LENS_POSE_ROTATION
* @see ACAMERA_LENS_RADIAL_DISTORTION
*/
ACAMERA_LENS_POSE_TRANSLATION = // float[3]
ACAMERA_LENS_START + 7,
/**
* <p>The range of scene distances that are in
* sharp focus (depth of field).</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>If variable focus not supported, can still report
* fixed depth of field range</p>
*/
ACAMERA_LENS_FOCUS_RANGE = // float[2]
ACAMERA_LENS_START + 8,
/**
* <p>Current lens status.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>For lens parameters ACAMERA_LENS_FOCAL_LENGTH, ACAMERA_LENS_FOCUS_DISTANCE,
* ACAMERA_LENS_FILTER_DENSITY and ACAMERA_LENS_APERTURE, when changes are requested,
* they may take several frames to reach the requested values. This state indicates
* the current status of the lens parameters.</p>
* <p>When the state is STATIONARY, the lens parameters are not changing. This could be
* either because the parameters are all fixed, or because the lens has had enough
* time to reach the most recently-requested values.
* If all these lens parameters are not changable for a camera device, as listed below:</p>
* <ul>
* <li>Fixed focus (<code>ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE == 0</code>), which means
* ACAMERA_LENS_FOCUS_DISTANCE parameter will always be 0.</li>
* <li>Fixed focal length (ACAMERA_LENS_INFO_AVAILABLE_FOCAL_LENGTHS contains single value),
* which means the optical zoom is not supported.</li>
* <li>No ND filter (ACAMERA_LENS_INFO_AVAILABLE_FILTER_DENSITIES contains only 0).</li>
* <li>Fixed aperture (ACAMERA_LENS_INFO_AVAILABLE_APERTURES contains single value).</li>
* </ul>
* <p>Then this state will always be STATIONARY.</p>
* <p>When the state is MOVING, it indicates that at least one of the lens parameters
* is changing.</p>
*
* @see ACAMERA_LENS_APERTURE
* @see ACAMERA_LENS_FILTER_DENSITY
* @see ACAMERA_LENS_FOCAL_LENGTH
* @see ACAMERA_LENS_FOCUS_DISTANCE
* @see ACAMERA_LENS_INFO_AVAILABLE_APERTURES
* @see ACAMERA_LENS_INFO_AVAILABLE_FILTER_DENSITIES
* @see ACAMERA_LENS_INFO_AVAILABLE_FOCAL_LENGTHS
* @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
*/
ACAMERA_LENS_STATE = // byte (enum)
ACAMERA_LENS_START + 9,
/**
* <p>The parameters for this camera device's intrinsic
* calibration.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>The five calibration parameters that describe the
* transform from camera-centric 3D coordinates to sensor
* pixel coordinates:</p>
* <pre><code>[f_x, f_y, c_x, c_y, s]
* </code></pre>
* <p>Where <code>f_x</code> and <code>f_y</code> are the horizontal and vertical
* focal lengths, <code>[c_x, c_y]</code> is the position of the optical
* axis, and <code>s</code> is a skew parameter for the sensor plane not
* being aligned with the lens plane.</p>
* <p>These are typically used within a transformation matrix K:</p>
* <pre><code>K = [ f_x, s, c_x,
* 0, f_y, c_y,
* 0 0, 1 ]
* </code></pre>
* <p>which can then be combined with the camera pose rotation
* <code>R</code> and translation <code>t</code> (ACAMERA_LENS_POSE_ROTATION and
* ACAMERA_LENS_POSE_TRANSLATION, respective) to calculate the
* complete transform from world coordinates to pixel
* coordinates:</p>
* <pre><code>P = [ K 0 * [ R t
* 0 1 ] 0 1 ]
* </code></pre>
* <p>and with <code>p_w</code> being a point in the world coordinate system
* and <code>p_s</code> being a point in the camera active pixel array
* coordinate system, and with the mapping including the
* homogeneous division by z:</p>
* <pre><code> p_h = (x_h, y_h, z_h) = P p_w
* p_s = p_h / z_h
* </code></pre>
* <p>so <code>[x_s, y_s]</code> is the pixel coordinates of the world
* point, <code>z_s = 1</code>, and <code>w_s</code> is a measurement of disparity
* (depth) in pixel coordinates.</p>
* <p>Note that the coordinate system for this transform is the
* ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE system,
* where <code>(0,0)</code> is the top-left of the
* preCorrectionActiveArraySize rectangle. Once the pose and
* intrinsic calibration transforms have been applied to a
* world point, then the ACAMERA_LENS_RADIAL_DISTORTION
* transform needs to be applied, and the result adjusted to
* be in the ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE coordinate
* system (where <code>(0, 0)</code> is the top-left of the
* activeArraySize rectangle), to determine the final pixel
* coordinate of the world point for processed (non-RAW)
* output buffers.</p>
*
* @see ACAMERA_LENS_POSE_ROTATION
* @see ACAMERA_LENS_POSE_TRANSLATION
* @see ACAMERA_LENS_RADIAL_DISTORTION
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
* @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
*/
ACAMERA_LENS_INTRINSIC_CALIBRATION = // float[5]
ACAMERA_LENS_START + 10,
/**
* <p>The correction coefficients to correct for this camera device's
* radial and tangential lens distortion.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>Four radial distortion coefficients <code>[kappa_0, kappa_1, kappa_2,
* kappa_3]</code> and two tangential distortion coefficients
* <code>[kappa_4, kappa_5]</code> that can be used to correct the
* lens's geometric distortion with the mapping equations:</p>
* <pre><code> x_c = x_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
* kappa_4 * (2 * x_i * y_i) + kappa_5 * ( r^2 + 2 * x_i^2 )
* y_c = y_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
* kappa_5 * (2 * x_i * y_i) + kappa_4 * ( r^2 + 2 * y_i^2 )
* </code></pre>
* <p>Here, <code>[x_c, y_c]</code> are the coordinates to sample in the
* input image that correspond to the pixel values in the
* corrected image at the coordinate <code>[x_i, y_i]</code>:</p>
* <pre><code> correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)
* </code></pre>
* <p>The pixel coordinates are defined in a normalized
* coordinate system related to the
* ACAMERA_LENS_INTRINSIC_CALIBRATION calibration fields.
* Both <code>[x_i, y_i]</code> and <code>[x_c, y_c]</code> have <code>(0,0)</code> at the
* lens optical center <code>[c_x, c_y]</code>. The maximum magnitudes
* of both x and y coordinates are normalized to be 1 at the
* edge further from the optical center, so the range
* for both dimensions is <code>-1 <= x <= 1</code>.</p>
* <p>Finally, <code>r</code> represents the radial distance from the
* optical center, <code>r^2 = x_i^2 + y_i^2</code>, and its magnitude
* is therefore no larger than <code>|r| <= sqrt(2)</code>.</p>
* <p>The distortion model used is the Brown-Conrady model.</p>
*
* @see ACAMERA_LENS_INTRINSIC_CALIBRATION
*/
ACAMERA_LENS_RADIAL_DISTORTION = // float[6]
ACAMERA_LENS_START + 11,
ACAMERA_LENS_END,
/**
* <p>List of aperture size values for ACAMERA_LENS_APERTURE that are
* supported by this camera device.</p>
*
* @see ACAMERA_LENS_APERTURE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If the camera device doesn't support a variable lens aperture,
* this list will contain only one value, which is the fixed aperture size.</p>
* <p>If the camera device supports a variable aperture, the aperture values
* in this list will be sorted in ascending order.</p>
*/
ACAMERA_LENS_INFO_AVAILABLE_APERTURES = // float[n]
ACAMERA_LENS_INFO_START,
/**
* <p>List of neutral density filter values for
* ACAMERA_LENS_FILTER_DENSITY that are supported by this camera device.</p>
*
* @see ACAMERA_LENS_FILTER_DENSITY
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If a neutral density filter is not supported by this camera device,
* this list will contain only 0. Otherwise, this list will include every
* filter density supported by the camera device, in ascending order.</p>
*/
ACAMERA_LENS_INFO_AVAILABLE_FILTER_DENSITIES = // float[n]
ACAMERA_LENS_INFO_START + 1,
/**
* <p>List of focal lengths for ACAMERA_LENS_FOCAL_LENGTH that are supported by this camera
* device.</p>
*
* @see ACAMERA_LENS_FOCAL_LENGTH
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If optical zoom is not supported, this list will only contain
* a single value corresponding to the fixed focal length of the
* device. Otherwise, this list will include every focal length supported
* by the camera device, in ascending order.</p>
*/
ACAMERA_LENS_INFO_AVAILABLE_FOCAL_LENGTHS = // float[n]
ACAMERA_LENS_INFO_START + 2,
/**
* <p>List of optical image stabilization (OIS) modes for
* ACAMERA_LENS_OPTICAL_STABILIZATION_MODE that are supported by this camera device.</p>
*
* @see ACAMERA_LENS_OPTICAL_STABILIZATION_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If OIS is not supported by a given camera device, this list will
* contain only OFF.</p>
*/
ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION = // byte[n]
ACAMERA_LENS_INFO_START + 3,
/**
* <p>Hyperfocal distance for this lens.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If the lens is not fixed focus, the camera device will report this
* field when ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION is APPROXIMATE or CALIBRATED.</p>
*
* @see ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION
*/
ACAMERA_LENS_INFO_HYPERFOCAL_DISTANCE = // float
ACAMERA_LENS_INFO_START + 4,
/**
* <p>Shortest distance from frontmost surface
* of the lens that can be brought into sharp focus.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If the lens is fixed-focus, this will be
* 0.</p>
*/
ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE = // float
ACAMERA_LENS_INFO_START + 5,
/**
* <p>Dimensions of lens shading map.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>The map should be on the order of 30-40 rows and columns, and
* must be smaller than 64x64.</p>
*/
ACAMERA_LENS_INFO_SHADING_MAP_SIZE = // int32[2]
ACAMERA_LENS_INFO_START + 6,
/**
* <p>The lens focus distance calibration quality.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>The lens focus distance calibration quality determines the reliability of
* focus related metadata entries, i.e. ACAMERA_LENS_FOCUS_DISTANCE,
* ACAMERA_LENS_FOCUS_RANGE, ACAMERA_LENS_INFO_HYPERFOCAL_DISTANCE, and
* ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE.</p>
* <p>APPROXIMATE and CALIBRATED devices report the focus metadata in
* units of diopters (1/meter), so <code>0.0f</code> represents focusing at infinity,
* and increasing positive numbers represent focusing closer and closer
* to the camera device. The focus distance control also uses diopters
* on these devices.</p>
* <p>UNCALIBRATED devices do not use units that are directly comparable
* to any real physical measurement, but <code>0.0f</code> still represents farthest
* focus, and ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE represents the
* nearest focus the device can achieve.</p>
*
* @see ACAMERA_LENS_FOCUS_DISTANCE
* @see ACAMERA_LENS_FOCUS_RANGE
* @see ACAMERA_LENS_INFO_HYPERFOCAL_DISTANCE
* @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
*/
ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION = // byte (enum)
ACAMERA_LENS_INFO_START + 7,
ACAMERA_LENS_INFO_END,
/**
* <p>Mode of operation for the noise reduction algorithm.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>The noise reduction algorithm attempts to improve image quality by removing
* excessive noise added by the capture process, especially in dark conditions.</p>
* <p>OFF means no noise reduction will be applied by the camera device, for both raw and
* YUV domain.</p>
* <p>MINIMAL means that only sensor raw domain basic noise reduction is enabled ,to remove
* demosaicing or other processing artifacts. For YUV_REPROCESSING, MINIMAL is same as OFF.
* This mode is optional, may not be support by all devices. The application should check
* ACAMERA_NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES before using it.</p>
* <p>FAST/HIGH_QUALITY both mean camera device determined noise filtering
* will be applied. HIGH_QUALITY mode indicates that the camera device
* will use the highest-quality noise filtering algorithms,
* even if it slows down capture rate. FAST means the camera device will not
* slow down capture rate when applying noise filtering. FAST may be the same as MINIMAL if
* MINIMAL is listed, or the same as OFF if any noise filtering will slow down capture rate.
* Every output stream will have a similar amount of enhancement applied.</p>
* <p>ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular
* buffer of high-resolution images during preview and reprocess image(s) from that buffer
* into a final capture when triggered by the user. In this mode, the camera device applies
* noise reduction to low-resolution streams (below maximum recording resolution) to maximize
* preview quality, but does not apply noise reduction to high-resolution streams, since
* those will be reprocessed later if necessary.</p>
* <p>For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera device
* will apply FAST/HIGH_QUALITY YUV domain noise reduction, respectively. The camera device
* may adjust the noise reduction parameters for best image quality based on the
* android.reprocess.effectiveExposureFactor if it is set.</p>
*
* @see ACAMERA_NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
*/
ACAMERA_NOISE_REDUCTION_MODE = // byte (enum)
ACAMERA_NOISE_REDUCTION_START,
/**
* <p>List of noise reduction modes for ACAMERA_NOISE_REDUCTION_MODE that are supported
* by this camera device.</p>
*
* @see ACAMERA_NOISE_REDUCTION_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Full-capability camera devices will always support OFF and FAST.</p>
* <p>Camera devices that support YUV_REPROCESSING or PRIVATE_REPROCESSING will support
* ZERO_SHUTTER_LAG.</p>
* <p>Legacy-capability camera devices will only support FAST mode.</p>
*/
ACAMERA_NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES = // byte[n]
ACAMERA_NOISE_REDUCTION_START + 2,
ACAMERA_NOISE_REDUCTION_END,
/**
* <p>The maximum numbers of different types of output streams
* that can be configured and used simultaneously by a camera device.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This is a 3 element tuple that contains the max number of output simultaneous
* streams for raw sensor, processed (but not stalling), and processed (and stalling)
* formats respectively. For example, assuming that JPEG is typically a processed and
* stalling stream, if max raw sensor format output stream number is 1, max YUV streams
* number is 3, and max JPEG stream number is 2, then this tuple should be <code>(1, 3, 2)</code>.</p>
* <p>This lists the upper bound of the number of output streams supported by
* the camera device. Using more streams simultaneously may require more hardware and
* CPU resources that will consume more power. The image format for an output stream can
* be any supported format provided by ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS.
* The formats defined in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS can be catergorized
* into the 3 stream types as below:</p>
* <ul>
* <li>Processed (but stalling): any non-RAW format with a stallDurations > 0.
* Typically {@link AIMAGE_FORMAT_JPEG} format.</li>
* <li>Raw formats: {@link AIMAGE_FORMAT_RAW16}, {@link AIMAGE_FORMAT_RAW10}, or
* {@link AIMAGE_FORMAT_RAW12}.</li>
* <li>Processed (but not-stalling): any non-RAW format without a stall duration.
* Typically {@link AIMAGE_FORMAT_YUV_420_888}.</li>
* </ul>
*
* @see ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
*/
ACAMERA_REQUEST_MAX_NUM_OUTPUT_STREAMS = // int32[3]
ACAMERA_REQUEST_START + 6,
/**
* <p>Specifies the number of pipeline stages the frame went
* through from when it was exposed to when the final completed result
* was available to the framework.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>Depending on what settings are used in the request, and
* what streams are configured, the data may undergo less processing,
* and some pipeline stages skipped.</p>
* <p>See ACAMERA_REQUEST_PIPELINE_MAX_DEPTH for more details.</p>
*
* @see ACAMERA_REQUEST_PIPELINE_MAX_DEPTH
*/
ACAMERA_REQUEST_PIPELINE_DEPTH = // byte
ACAMERA_REQUEST_START + 9,
/**
* <p>Specifies the number of maximum pipeline stages a frame
* has to go through from when it's exposed to when it's available
* to the framework.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>A typical minimum value for this is 2 (one stage to expose,
* one stage to readout) from the sensor. The ISP then usually adds
* its own stages to do custom HW processing. Further stages may be
* added by SW processing.</p>
* <p>Depending on what settings are used (e.g. YUV, JPEG) and what
* processing is enabled (e.g. face detection), the actual pipeline
* depth (specified by ACAMERA_REQUEST_PIPELINE_DEPTH) may be less than
* the max pipeline depth.</p>
* <p>A pipeline depth of X stages is equivalent to a pipeline latency of
* X frame intervals.</p>
* <p>This value will normally be 8 or less, however, for high speed capture session,
* the max pipeline depth will be up to 8 x size of high speed capture request list.</p>
*
* @see ACAMERA_REQUEST_PIPELINE_DEPTH
*/
ACAMERA_REQUEST_PIPELINE_MAX_DEPTH = // byte
ACAMERA_REQUEST_START + 10,
/**
* <p>Defines how many sub-components
* a result will be composed of.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>In order to combat the pipeline latency, partial results
* may be delivered to the application layer from the camera device as
* soon as they are available.</p>
* <p>Optional; defaults to 1. A value of 1 means that partial
* results are not supported, and only the final TotalCaptureResult will
* be produced by the camera device.</p>
* <p>A typical use case for this might be: after requesting an
* auto-focus (AF) lock the new AF state might be available 50%
* of the way through the pipeline. The camera device could
* then immediately dispatch this state via a partial result to
* the application, and the rest of the metadata via later
* partial results.</p>
*/
ACAMERA_REQUEST_PARTIAL_RESULT_COUNT = // int32
ACAMERA_REQUEST_START + 11,
/**
* <p>List of capabilities that this camera device
* advertises as fully supporting.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>A capability is a contract that the camera device makes in order
* to be able to satisfy one or more use cases.</p>
* <p>Listing a capability guarantees that the whole set of features
* required to support a common use will all be available.</p>
* <p>Using a subset of the functionality provided by an unsupported
* capability may be possible on a specific camera device implementation;
* to do this query each of ACAMERA_REQUEST_AVAILABLE_REQUEST_KEYS,
* ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS,
* ACAMERA_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS.</p>
* <p>The following capabilities are guaranteed to be available on
* ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL <code>==</code> FULL devices:</p>
* <ul>
* <li>MANUAL_SENSOR</li>
* <li>MANUAL_POST_PROCESSING</li>
* </ul>
* <p>Other capabilities may be available on either FULL or LIMITED
* devices, but the application should query this key to be sure.</p>
*
* @see ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
* @see ACAMERA_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS
* @see ACAMERA_REQUEST_AVAILABLE_REQUEST_KEYS
* @see ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS
*/
ACAMERA_REQUEST_AVAILABLE_CAPABILITIES = // byte[n] (enum)
ACAMERA_REQUEST_START + 12,
/**
* <p>A list of all keys that the camera device has available
* to use with {@link ACaptureRequest}.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Attempting to set a key into a CaptureRequest that is not
* listed here will result in an invalid request and will be rejected
* by the camera device.</p>
* <p>This field can be used to query the feature set of a camera device
* at a more granular level than capabilities. This is especially
* important for optional keys that are not listed under any capability
* in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
*
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
*/
ACAMERA_REQUEST_AVAILABLE_REQUEST_KEYS = // int32[n]
ACAMERA_REQUEST_START + 13,
/**
* <p>A list of all keys that the camera device has available
* to query with {@link ACameraMetadata} from
* {@link ACameraCaptureSession_captureCallback_result}.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Attempting to get a key from a CaptureResult that is not
* listed here will always return a <code>null</code> value. Getting a key from
* a CaptureResult that is listed here will generally never return a <code>null</code>
* value.</p>
* <p>The following keys may return <code>null</code> unless they are enabled:</p>
* <ul>
* <li>ACAMERA_STATISTICS_LENS_SHADING_MAP (non-null iff ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE == ON)</li>
* </ul>
* <p>(Those sometimes-null keys will nevertheless be listed here
* if they are available.)</p>
* <p>This field can be used to query the feature set of a camera device
* at a more granular level than capabilities. This is especially
* important for optional keys that are not listed under any capability
* in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
*
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
* @see ACAMERA_STATISTICS_LENS_SHADING_MAP
* @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
*/
ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS = // int32[n]
ACAMERA_REQUEST_START + 14,
/**
* <p>A list of all keys that the camera device has available
* to query with {@link ACameraMetadata} from
* {@link ACameraManager_getCameraCharacteristics}.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This entry follows the same rules as
* ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS (except that it applies for
* CameraCharacteristics instead of CaptureResult). See above for more
* details.</p>
*
* @see ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS
*/
ACAMERA_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS = // int32[n]
ACAMERA_REQUEST_START + 15,
ACAMERA_REQUEST_END,
/**
* <p>The desired region of the sensor to read out for this capture.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>This control can be used to implement digital zoom.</p>
* <p>The data representation is int[4], which maps to (left, top, width, height).</p>
* <p>The crop region coordinate system is based off
* ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, with <code>(0, 0)</code> being the
* top-left corner of the sensor active array.</p>
* <p>Output streams use this rectangle to produce their output,
* cropping to a smaller region if necessary to maintain the
* stream's aspect ratio, then scaling the sensor input to
* match the output's configured resolution.</p>
* <p>The crop region is applied after the RAW to other color
* space (e.g. YUV) conversion. Since raw streams
* (e.g. RAW16) don't have the conversion stage, they are not
* croppable. The crop region will be ignored by raw streams.</p>
* <p>For non-raw streams, any additional per-stream cropping will
* be done to maximize the final pixel area of the stream.</p>
* <p>For example, if the crop region is set to a 4:3 aspect
* ratio, then 4:3 streams will use the exact crop
* region. 16:9 streams will further crop vertically
* (letterbox).</p>
* <p>Conversely, if the crop region is set to a 16:9, then 4:3
* outputs will crop horizontally (pillarbox), and 16:9
* streams will match exactly. These additional crops will
* be centered within the crop region.</p>
* <p>The width and height of the crop region cannot
* be set to be smaller than
* <code>floor( activeArraySize.width / ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM )</code> and
* <code>floor( activeArraySize.height / ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM )</code>, respectively.</p>
* <p>The camera device may adjust the crop region to account
* for rounding and other hardware requirements; the final
* crop region used will be included in the output capture
* result.</p>
*
* @see ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
ACAMERA_SCALER_CROP_REGION = // int32[4]
ACAMERA_SCALER_START,
/**
* <p>The maximum ratio between both active area width
* and crop region width, and active area height and
* crop region height, for ACAMERA_SCALER_CROP_REGION.</p>
*
* @see ACAMERA_SCALER_CROP_REGION
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This represents the maximum amount of zooming possible by
* the camera device, or equivalently, the minimum cropping
* window size.</p>
* <p>Crop regions that have a width or height that is smaller
* than this ratio allows will be rounded up to the minimum
* allowed size by the camera device.</p>
*/
ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM = // float
ACAMERA_SCALER_START + 4,
/**
* <p>The available stream configurations that this
* camera device supports
* (i.e. format, width, height, output/input stream).</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>The configurations are listed as <code>(format, width, height, input?)</code>
* tuples.</p>
* <p>For a given use case, the actual maximum supported resolution
* may be lower than what is listed here, depending on the destination
* Surface for the image data. For example, for recording video,
* the video encoder chosen may have a maximum size limit (e.g. 1080p)
* smaller than what the camera (e.g. maximum resolution is 3264x2448)
* can provide.</p>
* <p>Please reference the documentation for the image data destination to
* check if it limits the maximum size for image data.</p>
* <p>Not all output formats may be supported in a configuration with
* an input stream of a particular format. For more details, see
* android.scaler.availableInputOutputFormatsMap.</p>
* <p>The following table describes the minimum required output stream
* configurations based on the hardware level
* (ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL):</p>
* <p>Format | Size | Hardware Level | Notes
* :-------------:|:--------------------------------------------:|:--------------:|:--------------:
* JPEG | ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE | Any |
* JPEG | 1920x1080 (1080p) | Any | if 1080p <= activeArraySize
* JPEG | 1280x720 (720) | Any | if 720p <= activeArraySize
* JPEG | 640x480 (480p) | Any | if 480p <= activeArraySize
* JPEG | 320x240 (240p) | Any | if 240p <= activeArraySize
* YUV_420_888 | all output sizes available for JPEG | FULL |
* YUV_420_888 | all output sizes available for JPEG, up to the maximum video size | LIMITED |
* IMPLEMENTATION_DEFINED | same as YUV_420_888 | Any |</p>
* <p>Refer to ACAMERA_REQUEST_AVAILABLE_CAPABILITIES for additional
* mandatory stream configurations on a per-capability basis.</p>
*
* @see ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS = // int32[n*4] (enum)
ACAMERA_SCALER_START + 10,
/**
* <p>This lists the minimum frame duration for each
* format/size combination.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This should correspond to the frame duration when only that
* stream is active, with all processing (typically in android.*.mode)
* set to either OFF or FAST.</p>
* <p>When multiple streams are used in a request, the minimum frame
* duration will be max(individual stream min durations).</p>
* <p>The minimum frame duration of a stream (of a particular format, size)
* is the same regardless of whether the stream is input or output.</p>
* <p>See ACAMERA_SENSOR_FRAME_DURATION and
* ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS for more details about
* calculating the max frame rate.</p>
*
* @see ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS
* @see ACAMERA_SENSOR_FRAME_DURATION
*/
ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS = // int64[4*n]
ACAMERA_SCALER_START + 11,
/**
* <p>This lists the maximum stall duration for each
* output format/size combination.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>A stall duration is how much extra time would get added
* to the normal minimum frame duration for a repeating request
* that has streams with non-zero stall.</p>
* <p>For example, consider JPEG captures which have the following
* characteristics:</p>
* <ul>
* <li>JPEG streams act like processed YUV streams in requests for which
* they are not included; in requests in which they are directly
* referenced, they act as JPEG streams. This is because supporting a
* JPEG stream requires the underlying YUV data to always be ready for
* use by a JPEG encoder, but the encoder will only be used (and impact
* frame duration) on requests that actually reference a JPEG stream.</li>
* <li>The JPEG processor can run concurrently to the rest of the camera
* pipeline, but cannot process more than 1 capture at a time.</li>
* </ul>
* <p>In other words, using a repeating YUV request would result
* in a steady frame rate (let's say it's 30 FPS). If a single
* JPEG request is submitted periodically, the frame rate will stay
* at 30 FPS (as long as we wait for the previous JPEG to return each
* time). If we try to submit a repeating YUV + JPEG request, then
* the frame rate will drop from 30 FPS.</p>
* <p>In general, submitting a new request with a non-0 stall time
* stream will <em>not</em> cause a frame rate drop unless there are still
* outstanding buffers for that stream from previous requests.</p>
* <p>Submitting a repeating request with streams (call this <code>S</code>)
* is the same as setting the minimum frame duration from
* the normal minimum frame duration corresponding to <code>S</code>, added with
* the maximum stall duration for <code>S</code>.</p>
* <p>If interleaving requests with and without a stall duration,
* a request will stall by the maximum of the remaining times
* for each can-stall stream with outstanding buffers.</p>
* <p>This means that a stalling request will not have an exposure start
* until the stall has completed.</p>
* <p>This should correspond to the stall duration when only that stream is
* active, with all processing (typically in android.*.mode) set to FAST
* or OFF. Setting any of the processing modes to HIGH_QUALITY
* effectively results in an indeterminate stall duration for all
* streams in a request (the regular stall calculation rules are
* ignored).</p>
* <p>The following formats may always have a stall duration:</p>
* <ul>
* <li>{@link AIMAGE_FORMAT_JPEG}</li>
* <li>{@link AIMAGE_FORMAT_RAW16}</li>
* </ul>
* <p>The following formats will never have a stall duration:</p>
* <ul>
* <li>{@link AIMAGE_FORMAT_YUV_420_888}</li>
* <li>{@link AIMAGE_FORMAT_RAW10}</li>
* </ul>
* <p>All other formats may or may not have an allowed stall duration on
* a per-capability basis; refer to ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
* for more details.</p>
* <p>See ACAMERA_SENSOR_FRAME_DURATION for more information about
* calculating the max frame rate (absent stalls).</p>
*
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
* @see ACAMERA_SENSOR_FRAME_DURATION
*/
ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS = // int64[4*n]
ACAMERA_SCALER_START + 12,
/**
* <p>The crop type that this camera device supports.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>When passing a non-centered crop region (ACAMERA_SCALER_CROP_REGION) 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 (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE)
* and keep the crop region width and height unchanged. The camera device will return the
* final used crop region in metadata result ACAMERA_SCALER_CROP_REGION.</p>
* <p>Camera devices that support FREEFORM cropping will support any crop region that
* is inside of the active array. The camera device will apply the same crop region and
* return the final used crop region in capture result metadata ACAMERA_SCALER_CROP_REGION.</p>
* <p>LEGACY capability devices will only support CENTER_ONLY cropping.</p>
*
* @see ACAMERA_SCALER_CROP_REGION
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
ACAMERA_SCALER_CROPPING_TYPE = // byte (enum)
ACAMERA_SCALER_START + 13,
ACAMERA_SCALER_END,
/**
* <p>Duration each pixel is exposed to
* light.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>If the sensor can't expose this exact duration, it will shorten the
* duration exposed to the nearest possible value (rather than expose longer).
* The final exposure time used will be available in the output capture result.</p>
* <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
* OFF; otherwise the auto-exposure algorithm will override this value.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_MODE
*/
ACAMERA_SENSOR_EXPOSURE_TIME = // int64
ACAMERA_SENSOR_START,
/**
* <p>Duration from start of frame exposure to
* start of next frame exposure.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>The maximum frame rate that can be supported by a camera subsystem is
* a function of many factors:</p>
* <ul>
* <li>Requested resolutions of output image streams</li>
* <li>Availability of binning / skipping modes on the imager</li>
* <li>The bandwidth of the imager interface</li>
* <li>The bandwidth of the various ISP processing blocks</li>
* </ul>
* <p>Since these factors can vary greatly between different ISPs and
* sensors, the camera abstraction tries to represent the bandwidth
* restrictions with as simple a model as possible.</p>
* <p>The model presented has the following characteristics:</p>
* <ul>
* <li>The image sensor is always configured to output the smallest
* resolution possible given the application's requested output stream
* sizes. The smallest resolution is defined as being at least as large
* as the largest requested output stream size; the camera pipeline must
* never digitally upsample sensor data when the crop region covers the
* whole sensor. In general, this means that if only small output stream
* resolutions are configured, the sensor can provide a higher frame
* rate.</li>
* <li>Since any request may use any or all the currently configured
* output streams, the sensor and ISP must be configured to support
* scaling a single capture to all the streams at the same time. This
* means the camera pipeline must be ready to produce the largest
* requested output size without any delay. Therefore, the overall
* frame rate of a given configured stream set is governed only by the
* largest requested stream resolution.</li>
* <li>Using more than one output stream in a request does not affect the
* frame duration.</li>
* <li>Certain format-streams may need to do additional background processing
* before data is consumed/produced by that stream. These processors
* can run concurrently to the rest of the camera pipeline, but
* cannot process more than 1 capture at a time.</li>
* </ul>
* <p>The necessary information for the application, given the model above,
* is provided via
* {@link ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}.
* These are used to determine the maximum frame rate / minimum frame
* duration that is possible for a given stream configuration.</p>
* <p>Specifically, the application can use the following rules to
* determine the minimum frame duration it can request from the camera
* device:</p>
* <ol>
* <li>Let the set of currently configured input/output streams
* be called <code>S</code>.</li>
* <li>Find the minimum frame durations for each stream in <code>S</code>, by looking
* it up in {@link ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}
* (with its respective size/format). Let this set of frame durations be
* called <code>F</code>.</li>
* <li>For any given request <code>R</code>, the minimum frame duration allowed
* for <code>R</code> is the maximum out of all values in <code>F</code>. Let the streams
* used in <code>R</code> be called <code>S_r</code>.</li>
* </ol>
* <p>If none of the streams in <code>S_r</code> have a stall time (listed in {@link
* ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS}
* using its respective size/format), then the frame duration in <code>F</code>
* determines the steady state frame rate that the application will get
* if it uses <code>R</code> as a repeating request. Let this special kind of
* request be called <code>Rsimple</code>.</p>
* <p>A repeating request <code>Rsimple</code> can be <em>occasionally</em> interleaved
* by a single capture of a new request <code>Rstall</code> (which has at least
* one in-use stream with a non-0 stall time) and if <code>Rstall</code> has the
* same minimum frame duration this will not cause a frame rate loss
* if all buffers from the previous <code>Rstall</code> have already been
* delivered.</p>
* <p>For more details about stalling, see
* {@link ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS}.</p>
* <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
* OFF; otherwise the auto-exposure algorithm will override this value.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_MODE
*/
ACAMERA_SENSOR_FRAME_DURATION = // int64
ACAMERA_SENSOR_START + 1,
/**
* <p>The amount of gain applied to sensor data
* before processing.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>The sensitivity is the standard ISO sensitivity value,
* as defined in ISO 12232:2006.</p>
* <p>The sensitivity must be within ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE, and
* if if it less than ACAMERA_SENSOR_MAX_ANALOG_SENSITIVITY, the camera device
* is guaranteed to use only analog amplification for applying the gain.</p>
* <p>If the camera device cannot apply the exact sensitivity
* requested, it will reduce the gain to the nearest supported
* value. The final sensitivity used will be available in the
* output capture result.</p>
* <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
* OFF; otherwise the auto-exposure algorithm will override this value.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_MODE
* @see ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE
* @see ACAMERA_SENSOR_MAX_ANALOG_SENSITIVITY
*/
ACAMERA_SENSOR_SENSITIVITY = // int32
ACAMERA_SENSOR_START + 2,
/**
* <p>The standard reference illuminant used as the scene light source when
* calculating the ACAMERA_SENSOR_COLOR_TRANSFORM1,
* ACAMERA_SENSOR_CALIBRATION_TRANSFORM1, and
* ACAMERA_SENSOR_FORWARD_MATRIX1 matrices.</p>
*
* @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM1
* @see ACAMERA_SENSOR_COLOR_TRANSFORM1
* @see ACAMERA_SENSOR_FORWARD_MATRIX1
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>The values in this key correspond to the values defined for the
* EXIF LightSource tag. These illuminants are standard light sources
* that are often used calibrating camera devices.</p>
* <p>If this key is present, then ACAMERA_SENSOR_COLOR_TRANSFORM1,
* ACAMERA_SENSOR_CALIBRATION_TRANSFORM1, and
* ACAMERA_SENSOR_FORWARD_MATRIX1 will also be present.</p>
* <p>Some devices may choose to provide a second set of calibration
* information for improved quality, including
* ACAMERA_SENSOR_REFERENCE_ILLUMINANT2 and its corresponding matrices.</p>
*
* @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM1
* @see ACAMERA_SENSOR_COLOR_TRANSFORM1
* @see ACAMERA_SENSOR_FORWARD_MATRIX1
* @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
*/
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1 = // byte (enum)
ACAMERA_SENSOR_START + 3,
/**
* <p>The standard reference illuminant used as the scene light source when
* calculating the ACAMERA_SENSOR_COLOR_TRANSFORM2,
* ACAMERA_SENSOR_CALIBRATION_TRANSFORM2, and
* ACAMERA_SENSOR_FORWARD_MATRIX2 matrices.</p>
*
* @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM2
* @see ACAMERA_SENSOR_COLOR_TRANSFORM2
* @see ACAMERA_SENSOR_FORWARD_MATRIX2
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>See ACAMERA_SENSOR_REFERENCE_ILLUMINANT1 for more details.</p>
* <p>If this key is present, then ACAMERA_SENSOR_COLOR_TRANSFORM2,
* ACAMERA_SENSOR_CALIBRATION_TRANSFORM2, and
* ACAMERA_SENSOR_FORWARD_MATRIX2 will also be present.</p>
*
* @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM2
* @see ACAMERA_SENSOR_COLOR_TRANSFORM2
* @see ACAMERA_SENSOR_FORWARD_MATRIX2
* @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
*/
ACAMERA_SENSOR_REFERENCE_ILLUMINANT2 = // byte
ACAMERA_SENSOR_START + 4,
/**
* <p>A per-device calibration transform matrix that maps from the
* reference sensor colorspace to the actual device sensor colorspace.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This matrix is used to correct for per-device variations in the
* sensor colorspace, and is used for processing raw buffer data.</p>
* <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
* contains a per-device calibration transform that maps colors
* from reference sensor color space (i.e. the "golden module"
* colorspace) into this camera device's native sensor color
* space under the first reference illuminant
* (ACAMERA_SENSOR_REFERENCE_ILLUMINANT1).</p>
*
* @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
*/
ACAMERA_SENSOR_CALIBRATION_TRANSFORM1 = // rational[3*3]
ACAMERA_SENSOR_START + 5,
/**
* <p>A per-device calibration transform matrix that maps from the
* reference sensor colorspace to the actual device sensor colorspace
* (this is the colorspace of the raw buffer data).</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This matrix is used to correct for per-device variations in the
* sensor colorspace, and is used for processing raw buffer data.</p>
* <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
* contains a per-device calibration transform that maps colors
* from reference sensor color space (i.e. the "golden module"
* colorspace) into this camera device's native sensor color
* space under the second reference illuminant
* (ACAMERA_SENSOR_REFERENCE_ILLUMINANT2).</p>
* <p>This matrix will only be present if the second reference
* illuminant is present.</p>
*
* @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
*/
ACAMERA_SENSOR_CALIBRATION_TRANSFORM2 = // rational[3*3]
ACAMERA_SENSOR_START + 6,
/**
* <p>A matrix that transforms color values from CIE XYZ color space to
* reference sensor color space.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This matrix is used to convert from the standard CIE XYZ color
* space to the reference sensor colorspace, and is used when processing
* raw buffer data.</p>
* <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
* contains a color transform matrix that maps colors from the CIE
* XYZ color space to the reference sensor color space (i.e. the
* "golden module" colorspace) under the first reference illuminant
* (ACAMERA_SENSOR_REFERENCE_ILLUMINANT1).</p>
* <p>The white points chosen in both the reference sensor color space
* and the CIE XYZ colorspace when calculating this transform will
* match the standard white point for the first reference illuminant
* (i.e. no chromatic adaptation will be applied by this transform).</p>
*
* @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
*/
ACAMERA_SENSOR_COLOR_TRANSFORM1 = // rational[3*3]
ACAMERA_SENSOR_START + 7,
/**
* <p>A matrix that transforms color values from CIE XYZ color space to
* reference sensor color space.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This matrix is used to convert from the standard CIE XYZ color
* space to the reference sensor colorspace, and is used when processing
* raw buffer data.</p>
* <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
* contains a color transform matrix that maps colors from the CIE
* XYZ color space to the reference sensor color space (i.e. the
* "golden module" colorspace) under the second reference illuminant
* (ACAMERA_SENSOR_REFERENCE_ILLUMINANT2).</p>
* <p>The white points chosen in both the reference sensor color space
* and the CIE XYZ colorspace when calculating this transform will
* match the standard white point for the second reference illuminant
* (i.e. no chromatic adaptation will be applied by this transform).</p>
* <p>This matrix will only be present if the second reference
* illuminant is present.</p>
*
* @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
*/
ACAMERA_SENSOR_COLOR_TRANSFORM2 = // rational[3*3]
ACAMERA_SENSOR_START + 8,
/**
* <p>A matrix that transforms white balanced camera colors from the reference
* sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This matrix is used to convert to the standard CIE XYZ colorspace, and
* is used when processing raw buffer data.</p>
* <p>This matrix is expressed as a 3x3 matrix in row-major-order, and contains
* a color transform matrix that maps white balanced colors from the
* reference sensor color space to the CIE XYZ color space with a D50 white
* point.</p>
* <p>Under the first reference illuminant (ACAMERA_SENSOR_REFERENCE_ILLUMINANT1)
* this matrix is chosen so that the standard white point for this reference
* illuminant in the reference sensor colorspace is mapped to D50 in the
* CIE XYZ colorspace.</p>
*
* @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
*/
ACAMERA_SENSOR_FORWARD_MATRIX1 = // rational[3*3]
ACAMERA_SENSOR_START + 9,
/**
* <p>A matrix that transforms white balanced camera colors from the reference
* sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This matrix is used to convert to the standard CIE XYZ colorspace, and
* is used when processing raw buffer data.</p>
* <p>This matrix is expressed as a 3x3 matrix in row-major-order, and contains
* a color transform matrix that maps white balanced colors from the
* reference sensor color space to the CIE XYZ color space with a D50 white
* point.</p>
* <p>Under the second reference illuminant (ACAMERA_SENSOR_REFERENCE_ILLUMINANT2)
* this matrix is chosen so that the standard white point for this reference
* illuminant in the reference sensor colorspace is mapped to D50 in the
* CIE XYZ colorspace.</p>
* <p>This matrix will only be present if the second reference
* illuminant is present.</p>
*
* @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
*/
ACAMERA_SENSOR_FORWARD_MATRIX2 = // rational[3*3]
ACAMERA_SENSOR_START + 10,
/**
* <p>A fixed black level offset for each of the color filter arrangement
* (CFA) mosaic channels.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This key specifies the zero light value for each of the CFA mosaic
* channels in the camera sensor. The maximal value output by the
* sensor is represented by the value in ACAMERA_SENSOR_INFO_WHITE_LEVEL.</p>
* <p>The values are given in the same order as channels listed for the CFA
* layout key (see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT), i.e. the
* nth value given corresponds to the black level offset for the nth
* color channel listed in the CFA.</p>
* <p>The black level values of captured images may vary for different
* capture settings (e.g., ACAMERA_SENSOR_SENSITIVITY). This key
* represents a coarse approximation for such case. It is recommended to
* use ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL or use pixels from
* ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS 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 ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS to calculate black
* level values for each frame.</p>
*
* @see ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL
* @see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
* @see ACAMERA_SENSOR_INFO_WHITE_LEVEL
* @see ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_SENSOR_BLACK_LEVEL_PATTERN = // int32[4]
ACAMERA_SENSOR_START + 12,
/**
* <p>Maximum sensitivity that is implemented
* purely through analog gain.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>For ACAMERA_SENSOR_SENSITIVITY values less than or
* equal to this, all applied gain must be analog. For
* values above this, the gain applied can be a mix of analog and
* digital.</p>
*
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_SENSOR_MAX_ANALOG_SENSITIVITY = // int32
ACAMERA_SENSOR_START + 13,
/**
* <p>Clockwise angle through which the output image needs to be rotated to be
* upright on the device screen in its native orientation.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Also defines the direction of rolling shutter readout, which is from top to bottom in
* the sensor's coordinate system.</p>
*/
ACAMERA_SENSOR_ORIENTATION = // int32
ACAMERA_SENSOR_START + 14,
/**
* <p>Time at start of exposure of first
* row of the image sensor active array, in nanoseconds.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>The timestamps are also included in all image
* buffers produced for the same capture, and will be identical
* on all the outputs.</p>
* <p>When ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE <code>==</code> UNKNOWN,
* the timestamps measure time since an unspecified starting point,
* and are monotonically increasing. They can be compared with the
* timestamps for other captures from the same camera device, but are
* not guaranteed to be comparable to any other time source.</p>
* <p>When ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE <code>==</code> REALTIME, the
* timestamps measure time in the same timebase as
* <a href="https://developer.android.com/reference/android/os/SystemClock.html#elapsedRealtimeNanos">elapsedRealtimeNanos</a>
* (or CLOCK_BOOTTIME), and they can
* be compared to other timestamps from other subsystems that
* are using that base.</p>
* <p>For reprocessing, the timestamp will match the start of exposure of
* the input image, i.e. {@link CaptureResult#SENSOR_TIMESTAMP the
* timestamp} in the TotalCaptureResult that was used to create the
* reprocess capture request.</p>
*
* @see ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE
*/
ACAMERA_SENSOR_TIMESTAMP = // int64
ACAMERA_SENSOR_START + 16,
/**
* <p>The estimated camera neutral color in the native sensor colorspace at
* the time of capture.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>This value gives the neutral color point encoded as an RGB value in the
* native sensor color space. The neutral color point indicates the
* currently estimated white point of the scene illumination. It can be
* used to interpolate between the provided color transforms when
* processing raw sensor data.</p>
* <p>The order of the values is R, G, B; where R is in the lowest index.</p>
*/
ACAMERA_SENSOR_NEUTRAL_COLOR_POINT = // rational[3]
ACAMERA_SENSOR_START + 18,
/**
* <p>Noise model coefficients for each CFA mosaic channel.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>This key contains two noise model coefficients for each CFA channel
* corresponding to the sensor amplification (S) and sensor readout
* noise (O). These are given as pairs of coefficients for each channel
* in the same order as channels listed for the CFA layout key
* (see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT). This is
* represented as an array of Pair<Double, Double>, where
* the first member of the Pair at index n is the S coefficient and the
* second member is the O coefficient for the nth color channel in the CFA.</p>
* <p>These coefficients are used in a two parameter noise model to describe
* the amount of noise present in the image for each CFA channel. The
* noise model used here is:</p>
* <p>N(x) = sqrt(Sx + O)</p>
* <p>Where x represents the recorded signal of a CFA channel normalized to
* the range [0, 1], and S and O are the noise model coeffiecients for
* that channel.</p>
* <p>A more detailed description of the noise model can be found in the
* Adobe DNG specification for the NoiseProfile tag.</p>
*
* @see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
*/
ACAMERA_SENSOR_NOISE_PROFILE = // double[2*CFA Channels]
ACAMERA_SENSOR_START + 19,
/**
* <p>The worst-case divergence between Bayer green channels.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>This value is an estimate of the worst case split between the
* Bayer green channels in the red and blue rows in the sensor color
* filter array.</p>
* <p>The green split is calculated as follows:</p>
* <ol>
* <li>A 5x5 pixel (or larger) window W within the active sensor array is
* chosen. The term 'pixel' here is taken to mean a group of 4 Bayer
* mosaic channels (R, Gr, Gb, B). The location and size of the window
* chosen is implementation defined, and should be chosen to provide a
* green split estimate that is both representative of the entire image
* for this camera sensor, and can be calculated quickly.</li>
* <li>The arithmetic mean of the green channels from the red
* rows (mean_Gr) within W is computed.</li>
* <li>The arithmetic mean of the green channels from the blue
* rows (mean_Gb) within W is computed.</li>
* <li>The maximum ratio R of the two means is computed as follows:
* <code>R = max((mean_Gr + 1)/(mean_Gb + 1), (mean_Gb + 1)/(mean_Gr + 1))</code></li>
* </ol>
* <p>The ratio R is the green split divergence reported for this property,
* which represents how much the green channels differ in the mosaic
* pattern. This value is typically used to determine the treatment of
* the green mosaic channels when demosaicing.</p>
* <p>The green split value can be roughly interpreted as follows:</p>
* <ul>
* <li>R < 1.03 is a negligible split (<3% divergence).</li>
* <li>1.20 <= R >= 1.03 will require some software
* correction to avoid demosaic errors (3-20% divergence).</li>
* <li>R > 1.20 will require strong software correction to produce
* a usuable image (>20% divergence).</li>
* </ul>
*/
ACAMERA_SENSOR_GREEN_SPLIT = // float
ACAMERA_SENSOR_START + 22,
/**
* <p>A pixel <code>[R, G_even, G_odd, B]</code> that supplies the test pattern
* when ACAMERA_SENSOR_TEST_PATTERN_MODE is SOLID_COLOR.</p>
*
* @see ACAMERA_SENSOR_TEST_PATTERN_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Each color channel is treated as an unsigned 32-bit integer.
* The camera device then uses the most significant X bits
* that correspond to how many bits are in its Bayer raw sensor
* output.</p>
* <p>For example, a sensor with RAW10 Bayer output would use the
* 10 most significant bits from each color channel.</p>
*/
ACAMERA_SENSOR_TEST_PATTERN_DATA = // int32[4]
ACAMERA_SENSOR_START + 23,
/**
* <p>When enabled, the sensor sends a test pattern instead of
* doing a real exposure from the camera.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>When a test pattern is enabled, all manual sensor controls specified
* by ACAMERA_SENSOR_* will be ignored. All other controls should
* work as normal.</p>
* <p>For example, if manual flash is enabled, flash firing should still
* occur (and that the test pattern remain unmodified, since the flash
* would not actually affect it).</p>
* <p>Defaults to OFF.</p>
*/
ACAMERA_SENSOR_TEST_PATTERN_MODE = // int32 (enum)
ACAMERA_SENSOR_START + 24,
/**
* <p>List of sensor test pattern modes for ACAMERA_SENSOR_TEST_PATTERN_MODE
* supported by this camera device.</p>
*
* @see ACAMERA_SENSOR_TEST_PATTERN_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Defaults to OFF, and always includes OFF if defined.</p>
*/
ACAMERA_SENSOR_AVAILABLE_TEST_PATTERN_MODES = // int32[n]
ACAMERA_SENSOR_START + 25,
/**
* <p>Duration between the start of first row exposure
* and the start of last row exposure.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>This is the exposure time skew between the first and last
* row exposure start times. The first row and the last row are
* the first and last rows inside of the
* ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
* <p>For typical camera sensors that use rolling shutters, this is also equivalent
* to the frame readout time.</p>
*
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
*/
ACAMERA_SENSOR_ROLLING_SHUTTER_SKEW = // int64
ACAMERA_SENSOR_START + 26,
/**
* <p>List of disjoint rectangles indicating the sensor
* optically shielded black pixel regions.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>In most camera sensors, the active array is surrounded by some
* optically shielded pixel areas. By blocking light, these pixels
* provides a reliable black reference for black level compensation
* in active array region.</p>
* <p>The data representation is int[4], which maps to (left, top, width, height).</p>
* <p>This key provides a list of disjoint rectangles specifying the
* regions of optically shielded (with metal shield) black pixel
* regions if the camera device is capable of reading out these black
* pixels in the output raw images. In comparison to the fixed black
* level values reported by ACAMERA_SENSOR_BLACK_LEVEL_PATTERN, this key
* may provide a more accurate way for the application to calculate
* black level of each captured raw images.</p>
* <p>When this key is reported, the ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL and
* ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL will also be reported.</p>
*
* @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
* @see ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL
* @see ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL
*/
ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS = // int32[4*num_regions]
ACAMERA_SENSOR_START + 27,
/**
* <p>A per-frame dynamic black level offset for each of the color filter
* arrangement (CFA) mosaic channels.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>Camera sensor black levels may vary dramatically for different
* capture settings (e.g. ACAMERA_SENSOR_SENSITIVITY). The fixed black
* level reported by ACAMERA_SENSOR_BLACK_LEVEL_PATTERN may be too
* inaccurate to represent the actual value on a per-frame basis. The
* camera device internal pipeline relies on reliable black level values
* to process the raw images appropriately. To get the best image
* quality, the camera device may choose to estimate the per frame black
* level values either based on optically shielded black regions
* (ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS) or its internal model.</p>
* <p>This key reports the camera device estimated per-frame zero light
* value for each of the CFA mosaic channels in the camera sensor. The
* ACAMERA_SENSOR_BLACK_LEVEL_PATTERN may only represent a coarse
* approximation of the actual black level values. This value is the
* black level used in camera device internal image processing pipeline
* and generally more accurate than the fixed black level values.
* However, since they are estimated values by the camera device, they
* may not be as accurate as the black level values calculated from the
* optical black pixels reported by ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS.</p>
* <p>The values are given in the same order as channels listed for the CFA
* layout key (see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT), i.e. the
* nth value given corresponds to the black level offset for the nth
* color channel listed in the CFA.</p>
* <p>This key will be available if ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS is
* available or the camera device advertises this key via
* {@link ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS}.</p>
*
* @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
* @see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
* @see ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL = // float[4]
ACAMERA_SENSOR_START + 28,
/**
* <p>Maximum raw value output by sensor for this frame.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>Since the ACAMERA_SENSOR_BLACK_LEVEL_PATTERN may change for different
* capture settings (e.g., ACAMERA_SENSOR_SENSITIVITY), the white
* level will change accordingly. This key is similar to
* ACAMERA_SENSOR_INFO_WHITE_LEVEL, but specifies the camera device
* estimated white level for each frame.</p>
* <p>This key will be available if ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS is
* available or the camera device advertises this key via
* {@link ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS}.</p>
*
* @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
* @see ACAMERA_SENSOR_INFO_WHITE_LEVEL
* @see ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL = // int32
ACAMERA_SENSOR_START + 29,
ACAMERA_SENSOR_END,
/**
* <p>The area of the image sensor which corresponds to active pixels after any geometric
* distortion correction has been applied.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This is the rectangle representing the size of the active region of the sensor (i.e.
* the region that actually receives light from the scene) after any geometric correction
* has been applied, and should be treated as the maximum size in pixels of any of the
* image output formats aside from the raw formats.</p>
* <p>This rectangle is defined relative to the full pixel array; (0,0) is the top-left of
* the full pixel array, and the size of the full pixel array is given by
* ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.</p>
* <p>The data representation is int[4], which maps to (left, top, width, height).</p>
* <p>The coordinate system for most other keys that list pixel coordinates, including
* ACAMERA_SCALER_CROP_REGION, is defined relative to the active array rectangle given in
* this field, with <code>(0, 0)</code> being the top-left of this rectangle.</p>
* <p>The active array may be smaller than the full pixel array, since the full array may
* include black calibration pixels or other inactive regions, and geometric correction
* resulting in scaling or cropping may have been applied.</p>
*
* @see ACAMERA_SCALER_CROP_REGION
* @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
*/
ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE = // int32[4]
ACAMERA_SENSOR_INFO_START,
/**
* <p>Range of sensitivities for ACAMERA_SENSOR_SENSITIVITY supported by this
* camera device.</p>
*
* @see ACAMERA_SENSOR_SENSITIVITY
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>The values are the standard ISO sensitivity values,
* as defined in ISO 12232:2006.</p>
*/
ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE = // int32[2]
ACAMERA_SENSOR_INFO_START + 1,
/**
* <p>The arrangement of color filters on sensor;
* represents the colors in the top-left 2x2 section of
* the sensor, in reading order.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>None</p>
*/
ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT = // byte (enum)
ACAMERA_SENSOR_INFO_START + 2,
/**
* <p>The range of image exposure times for ACAMERA_SENSOR_EXPOSURE_TIME supported
* by this camera device.</p>
*
* @see ACAMERA_SENSOR_EXPOSURE_TIME
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>None</p>
*/
ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE = // int64[2]
ACAMERA_SENSOR_INFO_START + 3,
/**
* <p>The maximum possible frame duration (minimum frame rate) for
* ACAMERA_SENSOR_FRAME_DURATION that is supported this camera device.</p>
*
* @see ACAMERA_SENSOR_FRAME_DURATION
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Attempting to use frame durations beyond the maximum will result in the frame
* duration being clipped to the maximum. See that control for a full definition of frame
* durations.</p>
* <p>Refer to {@link
* ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}
* for the minimum frame duration values.</p>
*/
ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION = // int64
ACAMERA_SENSOR_INFO_START + 4,
/**
* <p>The physical dimensions of the full pixel
* array.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This is the physical size of the sensor pixel
* array defined by ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.</p>
*
* @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
*/
ACAMERA_SENSOR_INFO_PHYSICAL_SIZE = // float[2]
ACAMERA_SENSOR_INFO_START + 5,
/**
* <p>Dimensions of the full pixel array, possibly
* including black calibration pixels.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>The pixel count of the full pixel array of the image sensor, which covers
* ACAMERA_SENSOR_INFO_PHYSICAL_SIZE area. This represents the full pixel dimensions of
* the raw buffers produced by this sensor.</p>
* <p>If a camera device supports raw sensor formats, either this or
* ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE is the maximum dimensions for the raw
* output formats listed in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS (this depends on
* whether or not the image sensor returns buffers containing pixels that are not
* part of the active array region for blacklevel calibration or other purposes).</p>
* <p>Some parts of the full pixel array may not receive light from the scene,
* or be otherwise inactive. The ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE key
* defines the rectangle of active pixels that will be included in processed image
* formats.</p>
*
* @see ACAMERA_SENSOR_INFO_PHYSICAL_SIZE
* @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
*/
ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE = // int32[2]
ACAMERA_SENSOR_INFO_START + 6,
/**
* <p>Maximum raw value output by sensor.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This specifies the fully-saturated encoding level for the raw
* sample values from the sensor. This is typically caused by the
* sensor becoming highly non-linear or clipping. The minimum for
* each channel is specified by the offset in the
* ACAMERA_SENSOR_BLACK_LEVEL_PATTERN key.</p>
* <p>The white level is typically determined either by sensor bit depth
* (8-14 bits is expected), or by the point where the sensor response
* becomes too non-linear to be useful. The default value for this is
* maximum representable value for a 16-bit raw sample (2^16 - 1).</p>
* <p>The white level values of captured images may vary for different
* capture settings (e.g., ACAMERA_SENSOR_SENSITIVITY). This key
* represents a coarse approximation for such case. It is recommended
* to use ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL for captures when supported
* by the camera device, which provides more accurate white level values.</p>
*
* @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
* @see ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_SENSOR_INFO_WHITE_LEVEL = // int32
ACAMERA_SENSOR_INFO_START + 7,
/**
* <p>The time base source for sensor capture start timestamps.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>The timestamps provided for captures are always in nanoseconds and monotonic, but
* may not based on a time source that can be compared to other system time sources.</p>
* <p>This characteristic defines the source for the timestamps, and therefore whether they
* can be compared against other system time sources/timestamps.</p>
*/
ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE = // byte (enum)
ACAMERA_SENSOR_INFO_START + 8,
/**
* <p>Whether the RAW images output from this camera device are subject to
* lens shading correction.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If TRUE, all images produced by the camera device in the RAW image formats will
* have lens shading correction already applied to it. If FALSE, the images will
* not be adjusted for lens shading correction.
* See android.request.maxNumOutputRaw for a list of RAW image formats.</p>
* <p>This key will be <code>null</code> for all devices do not report this information.
* Devices with RAW capability will always report this information in this key.</p>
*/
ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED = // byte (enum)
ACAMERA_SENSOR_INFO_START + 9,
/**
* <p>The area of the image sensor which corresponds to active pixels prior to the
* application of any geometric distortion correction.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>The data representation is int[4], which maps to (left, top, width, height).</p>
* <p>This is the rectangle representing the size of the active region of the sensor (i.e.
* the region that actually receives light from the scene) before any geometric correction
* has been applied, and should be treated as the active region rectangle for any of the
* raw formats. All metadata associated with raw processing (e.g. the lens shading
* correction map, and radial distortion fields) treats the top, left of this rectangle as
* the origin, (0,0).</p>
* <p>The size of this region determines the maximum field of view and the maximum number of
* pixels that an image from this sensor can contain, prior to the application of
* geometric distortion correction. The effective maximum pixel dimensions of a
* post-distortion-corrected image is given by the ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
* 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 ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
* <p>E.g. to calculate position of a pixel, (x,y), in a processed YUV output image with the
* dimensions in ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE given the position of a pixel,
* (x', y'), in the raw pixel array with dimensions give in
* ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE:</p>
* <ol>
* <li>Choose a pixel (x', y') within the active array region of the raw buffer given in
* ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE, otherwise this pixel is considered
* to be outside of the FOV, and will not be shown in the processed output image.</li>
* <li>Apply geometric distortion correction to get the post-distortion pixel coordinate,
* (x_i, y_i). When applying geometric correction metadata, note that metadata for raw
* buffers is defined relative to the top, left of the
* ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE rectangle.</li>
* <li>If the resulting corrected pixel coordinate is within the region given in
* ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, then the position of this pixel in the
* processed output image buffer is <code>(x_i - activeArray.left, y_i - activeArray.top)</code>,
* when the top, left coordinate of that buffer is treated as (0, 0).</li>
* </ol>
* <p>Thus, for pixel x',y' = (25, 25) on a sensor where ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
* is (100,100), ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE is (10, 10, 100, 100),
* ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE 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 ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE, and would be (5, 5)
* relative to the top,left of post-processed YUV output buffer with dimensions given in
* ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
* <p>The currently supported fields that correct for geometric distortion are:</p>
* <ol>
* <li>ACAMERA_LENS_RADIAL_DISTORTION.</li>
* </ol>
* <p>If all of the geometric distortion fields are no-ops, this rectangle will be the same
* as the post-distortion-corrected rectangle given in
* ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
* <p>This rectangle is defined relative to the full pixel array; (0,0) is the top-left of
* the full pixel array, and the size of the full pixel array is given by
* ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.</p>
* <p>The pre-correction active array may be smaller than the full pixel array, since the
* full array may include black calibration pixels or other inactive regions.</p>
*
* @see ACAMERA_LENS_RADIAL_DISTORTION
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
* @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
* @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
*/
ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE = // int32[4]
ACAMERA_SENSOR_INFO_START + 10,
ACAMERA_SENSOR_INFO_END,
/**
* <p>Quality of lens shading correction applied
* to the image data.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>When set to OFF mode, no lens shading correction will be applied by the
* camera device, and an identity lens shading map data will be provided
* if <code>ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE == ON</code>. For example, for lens
* shading map with size of <code>[ 4, 3 ]</code>,
* the output android.statistics.lensShadingCorrectionMap for this case will be an identity
* map shown below:</p>
* <pre><code>[ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 ]
* </code></pre>
* <p>When set to other modes, lens shading correction will be applied by the camera
* device. Applications can request lens shading map data by setting
* ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE to ON, and then the camera device will provide lens
* shading map data in android.statistics.lensShadingCorrectionMap; the returned shading map
* data will be the one applied by the camera device for this capture request.</p>
* <p>The shading map data may depend on the auto-exposure (AE) and AWB statistics, therefore
* the reliability of the map data may be affected by the AE and AWB algorithms. When AE and
* AWB are in AUTO modes(ACAMERA_CONTROL_AE_MODE <code>!=</code> OFF and ACAMERA_CONTROL_AWB_MODE <code>!=</code>
* OFF), to get best results, it is recommended that the applications wait for the AE and AWB
* to be converged before using the returned shading map data.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_AWB_MODE
* @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
*/
ACAMERA_SHADING_MODE = // byte (enum)
ACAMERA_SHADING_START,
/**
* <p>List of lens shading modes for ACAMERA_SHADING_MODE that are supported by this camera device.</p>
*
* @see ACAMERA_SHADING_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This list contains lens shading modes that can be set for the camera device.
* Camera devices that support the MANUAL_POST_PROCESSING capability will always
* list OFF and FAST mode. This includes all FULL level devices.
* LEGACY devices will always only support FAST mode.</p>
*/
ACAMERA_SHADING_AVAILABLE_MODES = // byte[n]
ACAMERA_SHADING_START + 2,
ACAMERA_SHADING_END,
/**
* <p>Operating mode for the face detector
* unit.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Whether face detection is enabled, and whether it
* should output just the basic fields or the full set of
* fields.</p>
*/
ACAMERA_STATISTICS_FACE_DETECT_MODE = // byte (enum)
ACAMERA_STATISTICS_START,
/**
* <p>Operating mode for hot pixel map generation.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>If set to <code>true</code>, a hot pixel map is returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.
* If set to <code>false</code>, no hot pixel map will be returned.</p>
*
* @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
*/
ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE = // byte (enum)
ACAMERA_STATISTICS_START + 3,
/**
* <p>List of unique IDs for detected faces.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>Each detected face is given a unique ID that is valid for as long as the face is visible
* to the camera device. A face that leaves the field of view and later returns may be
* assigned a new ID.</p>
* <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE == FULL</p>
*
* @see ACAMERA_STATISTICS_FACE_DETECT_MODE
*/
ACAMERA_STATISTICS_FACE_IDS = // int32[n]
ACAMERA_STATISTICS_START + 4,
/**
* <p>List of landmarks for detected
* faces.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>The coordinate system is that of ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, with
* <code>(0, 0)</code> being the top-left pixel of the active array.</p>
* <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE == FULL</p>
*
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
* @see ACAMERA_STATISTICS_FACE_DETECT_MODE
*/
ACAMERA_STATISTICS_FACE_LANDMARKS = // int32[n*6]
ACAMERA_STATISTICS_START + 5,
/**
* <p>List of the bounding rectangles for detected
* faces.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>The data representation is int[4], which maps to (left, top, width, height).</p>
* <p>The coordinate system is that of ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, with
* <code>(0, 0)</code> being the top-left pixel of the active array.</p>
* <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE != OFF</p>
*
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
* @see ACAMERA_STATISTICS_FACE_DETECT_MODE
*/
ACAMERA_STATISTICS_FACE_RECTANGLES = // int32[n*4]
ACAMERA_STATISTICS_START + 6,
/**
* <p>List of the face confidence scores for
* detected faces</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE != OFF.</p>
*
* @see ACAMERA_STATISTICS_FACE_DETECT_MODE
*/
ACAMERA_STATISTICS_FACE_SCORES = // byte[n]
ACAMERA_STATISTICS_START + 7,
/**
* <p>The shading map is a low-resolution floating-point map
* that lists the coefficients used to correct for vignetting and color shading,
* for each Bayer color channel of RAW image data.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>The map provided here is the same map that is used by the camera device to
* correct both color shading and vignetting for output non-RAW images.</p>
* <p>When there is no lens shading correction applied to RAW
* output images (ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED <code>==</code>
* false), this map is the complete lens shading correction
* map; when there is some lens shading correction applied to
* the RAW output image (ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED<code>==</code> true), this map reports the remaining lens shading
* correction map that needs to be applied to get shading
* corrected images that match the camera device's output for
* non-RAW formats.</p>
* <p>For a complete shading correction map, the least shaded
* section of the image will have a gain factor of 1; all
* other sections will have gains above 1.</p>
* <p>When ACAMERA_COLOR_CORRECTION_MODE = TRANSFORM_MATRIX, the map
* will take into account the colorCorrection settings.</p>
* <p>The shading map is for the entire active pixel array, and is not
* affected by the crop region specified in the request. Each shading map
* entry is the value of the shading compensation map over a specific
* pixel on the sensor. Specifically, with a (N x M) resolution shading
* map, and an active pixel array size (W x H), shading map entry
* (x,y) ϵ (0 ... N-1, 0 ... M-1) is the value of the shading map at
* pixel ( ((W-1)/(N-1)) * x, ((H-1)/(M-1)) * y) for the four color channels.
* The map is assumed to be bilinearly interpolated between the sample points.</p>
* <p>The channel order is [R, Geven, Godd, B], where Geven is the green
* channel for the even rows of a Bayer pattern, and Godd is the odd rows.
* The shading map is stored in a fully interleaved format, and its size
* is provided in the camera static metadata by ACAMERA_LENS_INFO_SHADING_MAP_SIZE.</p>
* <p>The shading map will generally have on the order of 30-40 rows and columns,
* and will be smaller than 64x64.</p>
* <p>As an example, given a very small map defined as:</p>
* <pre><code>ACAMERA_LENS_INFO_SHADING_MAP_SIZE = [ 4, 3 ]
* ACAMERA_STATISTICS_LENS_SHADING_MAP =
* [ 1.3, 1.2, 1.15, 1.2, 1.2, 1.2, 1.15, 1.2,
* 1.1, 1.2, 1.2, 1.2, 1.3, 1.2, 1.3, 1.3,
* 1.2, 1.2, 1.25, 1.1, 1.1, 1.1, 1.1, 1.0,
* 1.0, 1.0, 1.0, 1.0, 1.2, 1.3, 1.25, 1.2,
* 1.3, 1.2, 1.2, 1.3, 1.2, 1.15, 1.1, 1.2,
* 1.2, 1.1, 1.0, 1.2, 1.3, 1.15, 1.2, 1.3 ]
* </code></pre>
* <p>The low-resolution scaling map images for each channel are
* (displayed using nearest-neighbor interpolation):</p>
* <p><img alt="Red lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/red_shading.png" />
* <img alt="Green (even rows) lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/green_e_shading.png" />
* <img alt="Green (odd rows) lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/green_o_shading.png" />
* <img alt="Blue lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/blue_shading.png" /></p>
* <p>As a visualization only, inverting the full-color map to recover an
* image of a gray wall (using bicubic interpolation for visual quality)
* as captured by the sensor gives:</p>
* <p><img alt="Image of a uniform white wall (inverse shading map)" src="../images/camera2/metadata/android.statistics.lensShadingMap/inv_shading.png" /></p>
* <p>Note that the RAW image data might be subject to lens shading
* correction not reported on this map. Query
* ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED to see if RAW image data has subject
* to lens shading correction. If ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED
* is TRUE, the RAW image data is subject to partial or full lens shading
* correction. In the case full lens shading correction is applied to RAW
* images, the gain factor map reported in this key will contain all 1.0 gains.
* In other words, the map reported in this key is the remaining lens shading
* that needs to be applied on the RAW image to get images without lens shading
* artifacts. See android.request.maxNumOutputRaw for a list of RAW image
* formats.</p>
*
* @see ACAMERA_COLOR_CORRECTION_MODE
* @see ACAMERA_LENS_INFO_SHADING_MAP_SIZE
* @see ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED
* @see ACAMERA_STATISTICS_LENS_SHADING_MAP
*/
ACAMERA_STATISTICS_LENS_SHADING_MAP = // float[4*n*m]
ACAMERA_STATISTICS_START + 11,
/**
* <p>The camera device estimated scene illumination lighting
* frequency.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>Many light sources, such as most fluorescent lights, flicker at a rate
* that depends on the local utility power standards. This flicker must be
* accounted for by auto-exposure routines to avoid artifacts in captured images.
* The camera device uses this entry to tell the application what the scene
* illuminant frequency is.</p>
* <p>When manual exposure control is enabled
* (<code>ACAMERA_CONTROL_AE_MODE == OFF</code> or <code>ACAMERA_CONTROL_MODE ==
* OFF</code>), the ACAMERA_CONTROL_AE_ANTIBANDING_MODE doesn't perform
* antibanding, and the application can ensure it selects
* exposure times that do not cause banding issues by looking
* into this metadata field. See
* ACAMERA_CONTROL_AE_ANTIBANDING_MODE for more details.</p>
* <p>Reports NONE if there doesn't appear to be flickering illumination.</p>
*
* @see ACAMERA_CONTROL_AE_ANTIBANDING_MODE
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_MODE
*/
ACAMERA_STATISTICS_SCENE_FLICKER = // byte (enum)
ACAMERA_STATISTICS_START + 14,
/**
* <p>List of <code>(x, y)</code> coordinates of hot/defective pixels on the sensor.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>A coordinate <code>(x, y)</code> must lie between <code>(0, 0)</code>, and
* <code>(width - 1, height - 1)</code> (inclusive), which are the top-left and
* bottom-right of the pixel array, respectively. The width and
* height dimensions are given in ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.
* This may include hot pixels that lie outside of the active array
* bounds given by ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
*
* @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
* @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
*/
ACAMERA_STATISTICS_HOT_PIXEL_MAP = // int32[2*n]
ACAMERA_STATISTICS_START + 15,
/**
* <p>Whether the camera device will output the lens
* shading map in output result metadata.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>When set to ON,
* ACAMERA_STATISTICS_LENS_SHADING_MAP will be provided in
* the output result metadata.</p>
* <p>ON is always supported on devices with the RAW capability.</p>
*
* @see ACAMERA_STATISTICS_LENS_SHADING_MAP
*/
ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE = // byte (enum)
ACAMERA_STATISTICS_START + 16,
ACAMERA_STATISTICS_END,
/**
* <p>List of face detection modes for ACAMERA_STATISTICS_FACE_DETECT_MODE that are
* supported by this camera device.</p>
*
* @see ACAMERA_STATISTICS_FACE_DETECT_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>OFF is always supported.</p>
*/
ACAMERA_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES = // byte[n]
ACAMERA_STATISTICS_INFO_START,
/**
* <p>The maximum number of simultaneously detectable
* faces.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>None</p>
*/
ACAMERA_STATISTICS_INFO_MAX_FACE_COUNT = // int32
ACAMERA_STATISTICS_INFO_START + 2,
/**
* <p>List of hot pixel map output modes for ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE that are
* supported by this camera device.</p>
*
* @see ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If no hotpixel map output is available for this camera device, this will contain only
* <code>false</code>.</p>
* <p>ON is always supported on devices with the RAW capability.</p>
*/
ACAMERA_STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES = // byte[n]
ACAMERA_STATISTICS_INFO_START + 6,
/**
* <p>List of lens shading map output modes for ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE that
* are supported by this camera device.</p>
*
* @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If no lens shading map output is available for this camera device, this key will
* contain only OFF.</p>
* <p>ON is always supported on devices with the RAW capability.
* LEGACY mode devices will always only support OFF.</p>
*/
ACAMERA_STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES = // byte[n]
ACAMERA_STATISTICS_INFO_START + 7,
ACAMERA_STATISTICS_INFO_END,
/**
* <p>Tonemapping / contrast / gamma curve for the blue
* channel, to use when ACAMERA_TONEMAP_MODE is
* CONTRAST_CURVE.</p>
*
* @see ACAMERA_TONEMAP_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>See ACAMERA_TONEMAP_CURVE_RED for more details.</p>
*
* @see ACAMERA_TONEMAP_CURVE_RED
*/
ACAMERA_TONEMAP_CURVE_BLUE = // float[n*2]
ACAMERA_TONEMAP_START,
/**
* <p>Tonemapping / contrast / gamma curve for the green
* channel, to use when ACAMERA_TONEMAP_MODE is
* CONTRAST_CURVE.</p>
*
* @see ACAMERA_TONEMAP_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>See ACAMERA_TONEMAP_CURVE_RED for more details.</p>
*
* @see ACAMERA_TONEMAP_CURVE_RED
*/
ACAMERA_TONEMAP_CURVE_GREEN = // float[n*2]
ACAMERA_TONEMAP_START + 1,
/**
* <p>Tonemapping / contrast / gamma curve for the red
* channel, to use when ACAMERA_TONEMAP_MODE is
* CONTRAST_CURVE.</p>
*
* @see ACAMERA_TONEMAP_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Each channel's curve is defined by an array of control points:</p>
* <pre><code>ACAMERA_TONEMAP_CURVE_RED =
* [ P0in, P0out, P1in, P1out, P2in, P2out, P3in, P3out, ..., PNin, PNout ]
* 2 <= N <= ACAMERA_TONEMAP_MAX_CURVE_POINTS</code></pre>
* <p>These are sorted in order of increasing <code>Pin</code>; it is
* required that input values 0.0 and 1.0 are included in the list to
* define a complete mapping. For input values between control points,
* the camera device must linearly interpolate between the control
* points.</p>
* <p>Each curve can have an independent number of points, and the number
* of points can be less than max (that is, the request doesn't have to
* always provide a curve with number of points equivalent to
* ACAMERA_TONEMAP_MAX_CURVE_POINTS).</p>
* <p>A few examples, and their corresponding graphical mappings; these
* only specify the red channel and the precision is limited to 4
* digits, for conciseness.</p>
* <p>Linear mapping:</p>
* <pre><code>ACAMERA_TONEMAP_CURVE_RED = [ 0, 0, 1.0, 1.0 ]
* </code></pre>
* <p><img alt="Linear mapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/linear_tonemap.png" /></p>
* <p>Invert mapping:</p>
* <pre><code>ACAMERA_TONEMAP_CURVE_RED = [ 0, 1.0, 1.0, 0 ]
* </code></pre>
* <p><img alt="Inverting mapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/inverse_tonemap.png" /></p>
* <p>Gamma 1/2.2 mapping, with 16 control points:</p>
* <pre><code>ACAMERA_TONEMAP_CURVE_RED = [
* 0.0000, 0.0000, 0.0667, 0.2920, 0.1333, 0.4002, 0.2000, 0.4812,
* 0.2667, 0.5484, 0.3333, 0.6069, 0.4000, 0.6594, 0.4667, 0.7072,
* 0.5333, 0.7515, 0.6000, 0.7928, 0.6667, 0.8317, 0.7333, 0.8685,
* 0.8000, 0.9035, 0.8667, 0.9370, 0.9333, 0.9691, 1.0000, 1.0000 ]
* </code></pre>
* <p><img alt="Gamma = 1/2.2 tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/gamma_tonemap.png" /></p>
* <p>Standard sRGB gamma mapping, per IEC 61966-2-1:1999, with 16 control points:</p>
* <pre><code>ACAMERA_TONEMAP_CURVE_RED = [
* 0.0000, 0.0000, 0.0667, 0.2864, 0.1333, 0.4007, 0.2000, 0.4845,
* 0.2667, 0.5532, 0.3333, 0.6125, 0.4000, 0.6652, 0.4667, 0.7130,
* 0.5333, 0.7569, 0.6000, 0.7977, 0.6667, 0.8360, 0.7333, 0.8721,
* 0.8000, 0.9063, 0.8667, 0.9389, 0.9333, 0.9701, 1.0000, 1.0000 ]
* </code></pre>
* <p><img alt="sRGB tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
*
* @see ACAMERA_TONEMAP_CURVE_RED
* @see ACAMERA_TONEMAP_MAX_CURVE_POINTS
*/
ACAMERA_TONEMAP_CURVE_RED = // float[n*2]
ACAMERA_TONEMAP_START + 2,
/**
* <p>High-level global contrast/gamma/tonemapping control.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>When switching to an application-defined contrast curve by setting
* ACAMERA_TONEMAP_MODE to CONTRAST_CURVE, the curve is defined
* per-channel with a set of <code>(in, out)</code> points that specify the
* mapping from input high-bit-depth pixel value to the output
* low-bit-depth value. Since the actual pixel ranges of both input
* and output may change depending on the camera pipeline, the values
* are specified by normalized floating-point numbers.</p>
* <p>More-complex color mapping operations such as 3D color look-up
* tables, selective chroma enhancement, or other non-linear color
* transforms will be disabled when ACAMERA_TONEMAP_MODE is
* CONTRAST_CURVE.</p>
* <p>When using either FAST or HIGH_QUALITY, the camera device will
* emit its own tonemap curve in android.tonemap.curve.
* These values are always available, and as close as possible to the
* actually used nonlinear/nonglobal transforms.</p>
* <p>If a request is sent with CONTRAST_CURVE with the camera device's
* provided curve in FAST or HIGH_QUALITY, the image's tonemap will be
* roughly the same.</p>
*
* @see ACAMERA_TONEMAP_MODE
*/
ACAMERA_TONEMAP_MODE = // byte (enum)
ACAMERA_TONEMAP_START + 3,
/**
* <p>Maximum number of supported points in the
* tonemap curve that can be used for android.tonemap.curve.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If the actual number of points provided by the application (in ACAMERA_TONEMAPCURVE_*) is
* less than this maximum, the camera device will resample the curve to its internal
* representation, using linear interpolation.</p>
* <p>The output curves in the result metadata may have a different number
* of points than the input curves, and will represent the actual
* hardware curves used as closely as possible when linearly interpolated.</p>
*/
ACAMERA_TONEMAP_MAX_CURVE_POINTS = // int32
ACAMERA_TONEMAP_START + 4,
/**
* <p>List of tonemapping modes for ACAMERA_TONEMAP_MODE that are supported by this camera
* device.</p>
*
* @see ACAMERA_TONEMAP_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always contain
* at least one of below mode combinations:</p>
* <ul>
* <li>CONTRAST_CURVE, FAST and HIGH_QUALITY</li>
* <li>GAMMA_VALUE, PRESET_CURVE, FAST and HIGH_QUALITY</li>
* </ul>
* <p>This includes all FULL level devices.</p>
*/
ACAMERA_TONEMAP_AVAILABLE_TONE_MAP_MODES = // byte[n]
ACAMERA_TONEMAP_START + 5,
/**
* <p>Tonemapping curve to use when ACAMERA_TONEMAP_MODE is
* GAMMA_VALUE</p>
*
* @see ACAMERA_TONEMAP_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>The tonemap curve will be defined the following formula:
* * OUT = pow(IN, 1.0 / gamma)
* where IN and OUT is the input pixel value scaled to range [0.0, 1.0],
* pow is the power function and gamma is the gamma value specified by this
* key.</p>
* <p>The same curve will be applied to all color channels. The camera device
* may clip the input gamma value to its supported range. The actual applied
* value will be returned in capture result.</p>
* <p>The valid range of gamma value varies on different devices, but values
* within [1.0, 5.0] are guaranteed not to be clipped.</p>
*/
ACAMERA_TONEMAP_GAMMA = // float
ACAMERA_TONEMAP_START + 6,
/**
* <p>Tonemapping curve to use when ACAMERA_TONEMAP_MODE is
* PRESET_CURVE</p>
*
* @see ACAMERA_TONEMAP_MODE
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>The tonemap curve will be defined by specified standard.</p>
* <p>sRGB (approximated by 16 control points):</p>
* <p><img alt="sRGB tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
* <p>Rec. 709 (approximated by 16 control points):</p>
* <p><img alt="Rec. 709 tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/rec709_tonemap.png" /></p>
* <p>Note that above figures show a 16 control points approximation of preset
* curves. Camera devices may apply a different approximation to the curve.</p>
*/
ACAMERA_TONEMAP_PRESET_CURVE = // byte (enum)
ACAMERA_TONEMAP_START + 7,
ACAMERA_TONEMAP_END,
/**
* <p>Generally classifies the overall set of the camera device functionality.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>The supported hardware level is a high-level description of the camera device's
* capabilities, summarizing several capabilities into one field. Each level adds additional
* features to the previous one, and is always a strict superset of the previous level.
* The ordering is <code>LEGACY < LIMITED < FULL < LEVEL_3</code>.</p>
* <p>Starting from <code>LEVEL_3</code>, the level enumerations are guaranteed to be in increasing
* numerical value as well. To check if a given device is at least at a given hardware level,
* the following code snippet can be used:</p>
* <pre><code>// Returns true if the device supports the required hardware level, or better.
* boolean isHardwareLevelSupported(CameraCharacteristics c, int requiredLevel) {
* int deviceLevel = c.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);
* if (deviceLevel == CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY) {
* return requiredLevel == deviceLevel;
* }
* // deviceLevel is not LEGACY, can use numerical sort
* return requiredLevel <= deviceLevel;
* }
* </code></pre>
* <p>At a high level, the levels are:</p>
* <ul>
* <li><code>LEGACY</code> devices operate in a backwards-compatibility mode for older
* Android devices, and have very limited capabilities.</li>
* <li><code>LIMITED</code> devices represent the
* baseline feature set, and may also include additional capabilities that are
* subsets of <code>FULL</code>.</li>
* <li><code>FULL</code> devices additionally support per-frame manual control of sensor, flash, lens and
* post-processing settings, and image capture at a high rate.</li>
* <li><code>LEVEL_3</code> devices additionally support YUV reprocessing and RAW image capture, along
* with additional output stream configurations.</li>
* </ul>
* <p>See the individual level enums for full descriptions of the supported capabilities. The
* ACAMERA_REQUEST_AVAILABLE_CAPABILITIES 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 metadata tag entries in this document.</p>
* <p>Some features are not part of any particular hardware level or capability and must be
* queried separately. These include:</p>
* <ul>
* <li>Calibrated timestamps (ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE <code>==</code> REALTIME)</li>
* <li>Precision lens control (ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION <code>==</code> CALIBRATED)</li>
* <li>Face detection (ACAMERA_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES)</li>
* <li>Optical or electrical image stabilization
* (ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION,
* ACAMERA_CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES)</li>
* </ul>
*
* @see ACAMERA_CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES
* @see ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
* @see ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
* @see ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE
* @see ACAMERA_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
*/
ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL = // byte (enum)
ACAMERA_INFO_START,
ACAMERA_INFO_END,
/**
* <p>Whether black-level compensation is locked
* to its current values, or is free to vary.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* <li>ACaptureRequest</li>
* </ul>
*
* <p>Whether the black level offset was locked for this frame. Should be
* ON if ACAMERA_BLACK_LEVEL_LOCK was ON in the capture request, unless
* a change in other capture settings forced the camera device to
* perform a black level reset.</p>
*
* @see ACAMERA_BLACK_LEVEL_LOCK
*/
ACAMERA_BLACK_LEVEL_LOCK = // byte (enum)
ACAMERA_BLACK_LEVEL_START,
ACAMERA_BLACK_LEVEL_END,
/**
* <p>The frame number corresponding to the last request
* with which the output result (metadata + buffers) has been fully
* synchronized.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
* </ul>
*
* <p>When a request is submitted to the camera device, there is usually a
* delay of several frames before the controls get applied. A camera
* device may either choose to account for this delay by implementing a
* pipeline and carefully submit well-timed atomic control updates, or
* it may start streaming control changes that span over several frame
* boundaries.</p>
* <p>In the latter case, whenever a request's settings change relative to
* the previous submitted request, the full set of changes may take
* multiple frame durations to fully take effect. Some settings may
* take effect sooner (in less frame durations) than others.</p>
* <p>While a set of control changes are being propagated, this value
* will be CONVERGING.</p>
* <p>Once it is fully known that a set of control changes have been
* finished propagating, and the resulting updated control settings
* have been read back by the camera device, this value will be set
* to a non-negative frame number (corresponding to the request to
* which the results have synchronized to).</p>
* <p>Older camera device implementations may not have a way to detect
* when all camera controls have been applied, and will always set this
* value to UNKNOWN.</p>
* <p>FULL capability devices will always have this value set to the
* frame number of the request corresponding to this result.</p>
* <p><em>Further details</em>:</p>
* <ul>
* <li>Whenever a request differs from the last request, any future
* results not yet returned may have this value set to CONVERGING (this
* could include any in-progress captures not yet returned by the camera
* device, for more details see pipeline considerations below).</li>
* <li>Submitting a series of multiple requests that differ from the
* previous request (e.g. r1, r2, r3 s.t. r1 != r2 != r3)
* moves the new synchronization frame to the last non-repeating
* request (using the smallest frame number from the contiguous list of
* repeating requests).</li>
* <li>Submitting the same request repeatedly will not change this value
* to CONVERGING, if it was already a non-negative value.</li>
* <li>When this value changes to non-negative, that means that all of the
* metadata controls from the request have been applied, all of the
* metadata controls from the camera device have been read to the
* updated values (into the result), and all of the graphics buffers
* corresponding to this result are also synchronized to the request.</li>
* </ul>
* <p><em>Pipeline considerations</em>:</p>
* <p>Submitting a request with updated controls relative to the previously
* submitted requests may also invalidate the synchronization state
* of all the results corresponding to currently in-flight requests.</p>
* <p>In other words, results for this current request and up to
* ACAMERA_REQUEST_PIPELINE_MAX_DEPTH prior requests may have their
* ACAMERA_SYNC_FRAME_NUMBER change to CONVERGING.</p>
*
* @see ACAMERA_REQUEST_PIPELINE_MAX_DEPTH
* @see ACAMERA_SYNC_FRAME_NUMBER
*/
ACAMERA_SYNC_FRAME_NUMBER = // int64 (enum)
ACAMERA_SYNC_START,
/**
* <p>The maximum number of frames that can occur after a request
* (different than the previous) has been submitted, and before the
* result's state becomes synchronized.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This defines the maximum distance (in number of metadata results),
* between the frame number of the request that has new controls to apply
* and the frame number of the result that has all the controls applied.</p>
* <p>In other words this acts as an upper boundary for how many frames
* must occur before the camera device knows for a fact that the new
* submitted camera settings have been applied in outgoing frames.</p>
*/
ACAMERA_SYNC_MAX_LATENCY = // int32 (enum)
ACAMERA_SYNC_START + 1,
ACAMERA_SYNC_END,
/**
* <p>The available depth dataspace stream
* configurations that this camera device supports
* (i.e. format, width, height, output/input stream).</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>These are output stream configurations for use with
* dataSpace HAL_DATASPACE_DEPTH. The configurations are
* listed as <code>(format, width, height, input?)</code> tuples.</p>
* <p>Only devices that support depth output for at least
* the HAL_PIXEL_FORMAT_Y16 dense depth map may include
* this entry.</p>
* <p>A device that also supports the HAL_PIXEL_FORMAT_BLOB
* sparse depth point cloud must report a single entry for
* the format in this list as <code>(HAL_PIXEL_FORMAT_BLOB,
* android.depth.maxDepthSamples, 1, OUTPUT)</code> in addition to
* the entries for HAL_PIXEL_FORMAT_Y16.</p>
*/
ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS = // int32[n*4] (enum)
ACAMERA_DEPTH_START + 1,
/**
* <p>This lists the minimum frame duration for each
* format/size combination for depth output formats.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>This should correspond to the frame duration when only that
* stream is active, with all processing (typically in android.*.mode)
* set to either OFF or FAST.</p>
* <p>When multiple streams are used in a request, the minimum frame
* duration will be max(individual stream min durations).</p>
* <p>The minimum frame duration of a stream (of a particular format, size)
* is the same regardless of whether the stream is input or output.</p>
* <p>See ACAMERA_SENSOR_FRAME_DURATION and
* ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS for more details about
* calculating the max frame rate.</p>
*
* @see ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS
* @see ACAMERA_SENSOR_FRAME_DURATION
*/
ACAMERA_DEPTH_AVAILABLE_DEPTH_MIN_FRAME_DURATIONS = // int64[4*n]
ACAMERA_DEPTH_START + 2,
/**
* <p>This lists the maximum stall duration for each
* output format/size combination for depth streams.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>A stall duration is how much extra time would get added
* to the normal minimum frame duration for a repeating request
* that has streams with non-zero stall.</p>
* <p>This functions similarly to
* ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS for depth
* streams.</p>
* <p>All depth output stream formats may have a nonzero stall
* duration.</p>
*
* @see ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS
*/
ACAMERA_DEPTH_AVAILABLE_DEPTH_STALL_DURATIONS = // int64[4*n]
ACAMERA_DEPTH_START + 3,
/**
* <p>Indicates whether a capture request may target both a
* DEPTH16 / DEPTH_POINT_CLOUD output, and normal color outputs (such as
* YUV_420_888, JPEG, or RAW) simultaneously.</p>
*
* <p>This tag may appear in:</p>
* <ul>
* <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
* </ul>
*
* <p>If TRUE, including both depth and color outputs in a single
* capture request is not supported. An application must interleave color
* and depth requests. If FALSE, a single request can target both types
* of output.</p>
* <p>Typically, this restriction exists on camera devices that
* need to emit a specific pattern or wavelength of light to
* measure depth values, which causes the color image to be
* corrupted during depth measurement.</p>
*/
ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE = // byte (enum)
ACAMERA_DEPTH_START + 4,
ACAMERA_DEPTH_END,
} acamera_metadata_tag_t;
/**
* Enumeration definitions for the various entries that need them
*/
// ACAMERA_COLOR_CORRECTION_MODE
typedef enum acamera_metadata_enum_acamera_color_correction_mode {
/**
* <p>Use the ACAMERA_COLOR_CORRECTION_TRANSFORM matrix
* and ACAMERA_COLOR_CORRECTION_GAINS to do color conversion.</p>
* <p>All advanced white balance adjustments (not specified
* by our white balance pipeline) must be disabled.</p>
* <p>If AWB is enabled with <code>ACAMERA_CONTROL_AWB_MODE != OFF</code>, then
* TRANSFORM_MATRIX is ignored. The camera device will override
* this value to either FAST or HIGH_QUALITY.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
* @see ACAMERA_CONTROL_AWB_MODE
*/
ACAMERA_COLOR_CORRECTION_MODE_TRANSFORM_MATRIX = 0,
/**
* <p>Color correction processing must not slow down
* capture rate relative to sensor raw output.</p>
* <p>Advanced white balance adjustments above and beyond
* the specified white balance pipeline may be applied.</p>
* <p>If AWB is enabled with <code>ACAMERA_CONTROL_AWB_MODE != OFF</code>, then
* the camera device uses the last frame's AWB values
* (or defaults if AWB has never been run).</p>
*
* @see ACAMERA_CONTROL_AWB_MODE
*/
ACAMERA_COLOR_CORRECTION_MODE_FAST = 1,
/**
* <p>Color correction processing operates at improved
* quality but the capture rate might be reduced (relative to sensor
* raw output rate)</p>
* <p>Advanced white balance adjustments above and beyond
* the specified white balance pipeline may be applied.</p>
* <p>If AWB is enabled with <code>ACAMERA_CONTROL_AWB_MODE != OFF</code>, then
* the camera device uses the last frame's AWB values
* (or defaults if AWB has never been run).</p>
*
* @see ACAMERA_CONTROL_AWB_MODE
*/
ACAMERA_COLOR_CORRECTION_MODE_HIGH_QUALITY = 2,
} acamera_metadata_enum_android_color_correction_mode_t;
// ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
typedef enum acamera_metadata_enum_acamera_color_correction_aberration_mode {
/**
* <p>No aberration correction is applied.</p>
*/
ACAMERA_COLOR_CORRECTION_ABERRATION_MODE_OFF = 0,
/**
* <p>Aberration correction will not slow down capture rate
* relative to sensor raw output.</p>
*/
ACAMERA_COLOR_CORRECTION_ABERRATION_MODE_FAST = 1,
/**
* <p>Aberration correction operates at improved quality but the capture rate might be
* reduced (relative to sensor raw output rate)</p>
*/
ACAMERA_COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY = 2,
} acamera_metadata_enum_android_color_correction_aberration_mode_t;
// ACAMERA_CONTROL_AE_ANTIBANDING_MODE
typedef enum acamera_metadata_enum_acamera_control_ae_antibanding_mode {
/**
* <p>The camera device will not adjust exposure duration to
* avoid banding problems.</p>
*/
ACAMERA_CONTROL_AE_ANTIBANDING_MODE_OFF = 0,
/**
* <p>The camera device will adjust exposure duration to
* avoid banding problems with 50Hz illumination sources.</p>
*/
ACAMERA_CONTROL_AE_ANTIBANDING_MODE_50HZ = 1,
/**
* <p>The camera device will adjust exposure duration to
* avoid banding problems with 60Hz illumination
* sources.</p>
*/
ACAMERA_CONTROL_AE_ANTIBANDING_MODE_60HZ = 2,
/**
* <p>The camera device will automatically adapt its
* antibanding routine to the current illumination
* condition. This is the default mode if AUTO is
* available on given camera device.</p>
*/
ACAMERA_CONTROL_AE_ANTIBANDING_MODE_AUTO = 3,
} acamera_metadata_enum_android_control_ae_antibanding_mode_t;
// ACAMERA_CONTROL_AE_LOCK
typedef enum acamera_metadata_enum_acamera_control_ae_lock {
/**
* <p>Auto-exposure lock is disabled; the AE algorithm
* is free to update its parameters.</p>
*/
ACAMERA_CONTROL_AE_LOCK_OFF = 0,
/**
* <p>Auto-exposure lock is enabled; the AE algorithm
* must not update the exposure and sensitivity parameters
* while the lock is active.</p>
* <p>ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION setting changes
* will still take effect while auto-exposure is locked.</p>
* <p>Some rare LEGACY devices may not support
* this, in which case the value will always be overridden to OFF.</p>
*
* @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
*/
ACAMERA_CONTROL_AE_LOCK_ON = 1,
} acamera_metadata_enum_android_control_ae_lock_t;
// ACAMERA_CONTROL_AE_MODE
typedef enum acamera_metadata_enum_acamera_control_ae_mode {
/**
* <p>The camera device's autoexposure routine is disabled.</p>
* <p>The application-selected ACAMERA_SENSOR_EXPOSURE_TIME,
* ACAMERA_SENSOR_SENSITIVITY and
* ACAMERA_SENSOR_FRAME_DURATION are used by the camera
* device, along with ACAMERA_FLASH_* fields, if there's
* a flash unit for this camera device.</p>
* <p>Note that auto-white balance (AWB) and auto-focus (AF)
* behavior is device dependent when AE is in OFF mode.
* To have consistent behavior across different devices,
* it is recommended to either set AWB and AF to OFF mode
* or lock AWB and AF before setting AE to OFF.
* See ACAMERA_CONTROL_AWB_MODE, ACAMERA_CONTROL_AF_MODE,
* ACAMERA_CONTROL_AWB_LOCK, and ACAMERA_CONTROL_AF_TRIGGER
* for more details.</p>
* <p>LEGACY devices do not support the OFF mode and will
* override attempts to use this value to ON.</p>
*
* @see ACAMERA_CONTROL_AF_MODE
* @see ACAMERA_CONTROL_AF_TRIGGER
* @see ACAMERA_CONTROL_AWB_LOCK
* @see ACAMERA_CONTROL_AWB_MODE
* @see ACAMERA_SENSOR_EXPOSURE_TIME
* @see ACAMERA_SENSOR_FRAME_DURATION
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_CONTROL_AE_MODE_OFF = 0,
/**
* <p>The camera device's autoexposure routine is active,
* with no flash control.</p>
* <p>The application's values for
* ACAMERA_SENSOR_EXPOSURE_TIME,
* ACAMERA_SENSOR_SENSITIVITY, and
* ACAMERA_SENSOR_FRAME_DURATION are ignored. The
* application has control over the various
* ACAMERA_FLASH_* fields.</p>
*
* @see ACAMERA_SENSOR_EXPOSURE_TIME
* @see ACAMERA_SENSOR_FRAME_DURATION
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_CONTROL_AE_MODE_ON = 1,
/**
* <p>Like ON, except that the camera device also controls
* the camera's flash unit, firing it in low-light
* conditions.</p>
* <p>The flash may be fired during a precapture sequence
* (triggered by ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER) and
* may be fired for captures for which the
* ACAMERA_CONTROL_CAPTURE_INTENT field is set to
* STILL_CAPTURE</p>
*
* @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
* @see ACAMERA_CONTROL_CAPTURE_INTENT
*/
ACAMERA_CONTROL_AE_MODE_ON_AUTO_FLASH = 2,
/**
* <p>Like ON, except that the camera device also controls
* the camera's flash unit, always firing it for still
* captures.</p>
* <p>The flash may be fired during a precapture sequence
* (triggered by ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER) and
* will always be fired for captures for which the
* ACAMERA_CONTROL_CAPTURE_INTENT field is set to
* STILL_CAPTURE</p>
*
* @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
* @see ACAMERA_CONTROL_CAPTURE_INTENT
*/
ACAMERA_CONTROL_AE_MODE_ON_ALWAYS_FLASH = 3,
/**
* <p>Like ON_AUTO_FLASH, but with automatic red eye
* reduction.</p>
* <p>If deemed necessary by the camera device, a red eye
* reduction flash will fire during the precapture
* sequence.</p>
*/
ACAMERA_CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE = 4,
} acamera_metadata_enum_android_control_ae_mode_t;
// ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
typedef enum acamera_metadata_enum_acamera_control_ae_precapture_trigger {
/**
* <p>The trigger is idle.</p>
*/
ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER_IDLE = 0,
/**
* <p>The precapture metering sequence will be started
* by the camera device.</p>
* <p>The exact effect of the precapture trigger depends on
* the current AE mode and state.</p>
*/
ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER_START = 1,
/**
* <p>The camera device will cancel any currently active or completed
* precapture metering sequence, the auto-exposure routine will return to its
* initial state.</p>
*/
ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL = 2,
} acamera_metadata_enum_android_control_ae_precapture_trigger_t;
// ACAMERA_CONTROL_AF_MODE
typedef enum acamera_metadata_enum_acamera_control_af_mode {
/**
* <p>The auto-focus routine does not control the lens;
* ACAMERA_LENS_FOCUS_DISTANCE is controlled by the
* application.</p>
*
* @see ACAMERA_LENS_FOCUS_DISTANCE
*/
ACAMERA_CONTROL_AF_MODE_OFF = 0,
/**
* <p>Basic automatic focus mode.</p>
* <p>In this mode, the lens does not move unless
* the autofocus trigger action is called. When that trigger
* is activated, AF will transition to ACTIVE_SCAN, then to
* the outcome of the scan (FOCUSED or NOT_FOCUSED).</p>
* <p>Always supported if lens is not fixed focus.</p>
* <p>Use ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE to determine if lens
* is fixed-focus.</p>
* <p>Triggering AF_CANCEL resets the lens position to default,
* and sets the AF state to INACTIVE.</p>
*
* @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
*/
ACAMERA_CONTROL_AF_MODE_AUTO = 1,
/**
* <p>Close-up focusing mode.</p>
* <p>In this mode, the lens does not move unless the
* autofocus trigger action is called. When that trigger is
* activated, AF will transition to ACTIVE_SCAN, then to
* the outcome of the scan (FOCUSED or NOT_FOCUSED). This
* mode is optimized for focusing on objects very close to
* the camera.</p>
* <p>When that trigger is activated, AF will transition to
* ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or
* NOT_FOCUSED). Triggering cancel AF resets the lens
* position to default, and sets the AF state to
* INACTIVE.</p>
*/
ACAMERA_CONTROL_AF_MODE_MACRO = 2,
/**
* <p>In this mode, the AF algorithm modifies the lens
* position continually to attempt to provide a
* constantly-in-focus image stream.</p>
* <p>The focusing behavior should be suitable for good quality
* video recording; typically this means slower focus
* movement and no overshoots. When the AF trigger is not
* involved, the AF algorithm should start in INACTIVE state,
* and then transition into PASSIVE_SCAN and PASSIVE_FOCUSED
* states as appropriate. When the AF trigger is activated,
* the algorithm should immediately transition into
* AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
* lens position until a cancel AF trigger is received.</p>
* <p>Once cancel is received, the algorithm should transition
* back to INACTIVE and resume passive scan. Note that this
* behavior is not identical to CONTINUOUS_PICTURE, since an
* ongoing PASSIVE_SCAN must immediately be
* canceled.</p>
*/
ACAMERA_CONTROL_AF_MODE_CONTINUOUS_VIDEO = 3,
/**
* <p>In this mode, the AF algorithm modifies the lens
* position continually to attempt to provide a
* constantly-in-focus image stream.</p>
* <p>The focusing behavior should be suitable for still image
* capture; typically this means focusing as fast as
* possible. When the AF trigger is not involved, the AF
* algorithm should start in INACTIVE state, and then
* transition into PASSIVE_SCAN and PASSIVE_FOCUSED states as
* appropriate as it attempts to maintain focus. When the AF
* trigger is activated, the algorithm should finish its
* PASSIVE_SCAN if active, and then transition into
* AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
* lens position until a cancel AF trigger is received.</p>
* <p>When the AF cancel trigger is activated, the algorithm
* should transition back to INACTIVE and then act as if it
* has just been started.</p>
*/
ACAMERA_CONTROL_AF_MODE_CONTINUOUS_PICTURE = 4,
/**
* <p>Extended depth of field (digital focus) mode.</p>
* <p>The camera device will produce images with an extended
* depth of field automatically; no special focusing
* operations need to be done before taking a picture.</p>
* <p>AF triggers are ignored, and the AF state will always be
* INACTIVE.</p>
*/
ACAMERA_CONTROL_AF_MODE_EDOF = 5,
} acamera_metadata_enum_android_control_af_mode_t;
// ACAMERA_CONTROL_AF_TRIGGER
typedef enum acamera_metadata_enum_acamera_control_af_trigger {
/**
* <p>The trigger is idle.</p>
*/
ACAMERA_CONTROL_AF_TRIGGER_IDLE = 0,
/**
* <p>Autofocus will trigger now.</p>
*/
ACAMERA_CONTROL_AF_TRIGGER_START = 1,
/**
* <p>Autofocus will return to its initial
* state, and cancel any currently active trigger.</p>
*/
ACAMERA_CONTROL_AF_TRIGGER_CANCEL = 2,
} acamera_metadata_enum_android_control_af_trigger_t;
// ACAMERA_CONTROL_AWB_LOCK
typedef enum acamera_metadata_enum_acamera_control_awb_lock {
/**
* <p>Auto-white balance lock is disabled; the AWB
* algorithm is free to update its parameters if in AUTO
* mode.</p>
*/
ACAMERA_CONTROL_AWB_LOCK_OFF = 0,
/**
* <p>Auto-white balance lock is enabled; the AWB
* algorithm will not update its parameters while the lock
* is active.</p>
*/
ACAMERA_CONTROL_AWB_LOCK_ON = 1,
} acamera_metadata_enum_android_control_awb_lock_t;
// ACAMERA_CONTROL_AWB_MODE
typedef enum acamera_metadata_enum_acamera_control_awb_mode {
/**
* <p>The camera device's auto-white balance routine is disabled.</p>
* <p>The application-selected color transform matrix
* (ACAMERA_COLOR_CORRECTION_TRANSFORM) and gains
* (ACAMERA_COLOR_CORRECTION_GAINS) are used by the camera
* device for manual white balance control.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
*/
ACAMERA_CONTROL_AWB_MODE_OFF = 0,
/**
* <p>The camera device's auto-white balance routine is active.</p>
* <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
* and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
* For devices that support the MANUAL_POST_PROCESSING capability, the
* values used by the camera device for the transform and gains
* will be available in the capture result for this request.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
*/
ACAMERA_CONTROL_AWB_MODE_AUTO = 1,
/**
* <p>The camera device's auto-white balance routine is disabled;
* the camera device uses incandescent light as the assumed scene
* illumination for white balance.</p>
* <p>While the exact white balance transforms are up to the
* camera device, they will approximately match the CIE
* standard illuminant A.</p>
* <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
* and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
* For devices that support the MANUAL_POST_PROCESSING capability, the
* values used by the camera device for the transform and gains
* will be available in the capture result for this request.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
*/
ACAMERA_CONTROL_AWB_MODE_INCANDESCENT = 2,
/**
* <p>The camera device's auto-white balance routine is disabled;
* the camera device uses fluorescent light as the assumed scene
* illumination for white balance.</p>
* <p>While the exact white balance transforms are up to the
* camera device, they will approximately match the CIE
* standard illuminant F2.</p>
* <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
* and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
* For devices that support the MANUAL_POST_PROCESSING capability, the
* values used by the camera device for the transform and gains
* will be available in the capture result for this request.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
*/
ACAMERA_CONTROL_AWB_MODE_FLUORESCENT = 3,
/**
* <p>The camera device's auto-white balance routine is disabled;
* the camera device uses warm fluorescent light as the assumed scene
* illumination for white balance.</p>
* <p>While the exact white balance transforms are up to the
* camera device, they will approximately match the CIE
* standard illuminant F4.</p>
* <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
* and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
* For devices that support the MANUAL_POST_PROCESSING capability, the
* values used by the camera device for the transform and gains
* will be available in the capture result for this request.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
*/
ACAMERA_CONTROL_AWB_MODE_WARM_FLUORESCENT = 4,
/**
* <p>The camera device's auto-white balance routine is disabled;
* the camera device uses daylight light as the assumed scene
* illumination for white balance.</p>
* <p>While the exact white balance transforms are up to the
* camera device, they will approximately match the CIE
* standard illuminant D65.</p>
* <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
* and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
* For devices that support the MANUAL_POST_PROCESSING capability, the
* values used by the camera device for the transform and gains
* will be available in the capture result for this request.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
*/
ACAMERA_CONTROL_AWB_MODE_DAYLIGHT = 5,
/**
* <p>The camera device's auto-white balance routine is disabled;
* the camera device uses cloudy daylight light as the assumed scene
* illumination for white balance.</p>
* <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
* and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
* For devices that support the MANUAL_POST_PROCESSING capability, the
* values used by the camera device for the transform and gains
* will be available in the capture result for this request.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
*/
ACAMERA_CONTROL_AWB_MODE_CLOUDY_DAYLIGHT = 6,
/**
* <p>The camera device's auto-white balance routine is disabled;
* the camera device uses twilight light as the assumed scene
* illumination for white balance.</p>
* <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
* and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
* For devices that support the MANUAL_POST_PROCESSING capability, the
* values used by the camera device for the transform and gains
* will be available in the capture result for this request.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
*/
ACAMERA_CONTROL_AWB_MODE_TWILIGHT = 7,
/**
* <p>The camera device's auto-white balance routine is disabled;
* the camera device uses shade light as the assumed scene
* illumination for white balance.</p>
* <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
* and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
* For devices that support the MANUAL_POST_PROCESSING capability, the
* values used by the camera device for the transform and gains
* will be available in the capture result for this request.</p>
*
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
*/
ACAMERA_CONTROL_AWB_MODE_SHADE = 8,
} acamera_metadata_enum_android_control_awb_mode_t;
// ACAMERA_CONTROL_CAPTURE_INTENT
typedef enum acamera_metadata_enum_acamera_control_capture_intent {
/**
* <p>The goal of this request doesn't fall into the other
* categories. The camera device will default to preview-like
* behavior.</p>
*/
ACAMERA_CONTROL_CAPTURE_INTENT_CUSTOM = 0,
/**
* <p>This request is for a preview-like use case.</p>
* <p>The precapture trigger may be used to start off a metering
* w/flash sequence.</p>
*/
ACAMERA_CONTROL_CAPTURE_INTENT_PREVIEW = 1,
/**
* <p>This request is for a still capture-type
* use case.</p>
* <p>If the flash unit is under automatic control, it may fire as needed.</p>
*/
ACAMERA_CONTROL_CAPTURE_INTENT_STILL_CAPTURE = 2,
/**
* <p>This request is for a video recording
* use case.</p>
*/
ACAMERA_CONTROL_CAPTURE_INTENT_VIDEO_RECORD = 3,
/**
* <p>This request is for a video snapshot (still
* image while recording video) use case.</p>
* <p>The camera device should take the highest-quality image
* possible (given the other settings) without disrupting the
* frame rate of video recording. </p>
*/
ACAMERA_CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT = 4,
/**
* <p>This request is for a ZSL usecase; the
* application will stream full-resolution images and
* reprocess one or several later for a final
* capture.</p>
*/
ACAMERA_CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG = 5,
/**
* <p>This request is for manual capture use case where
* the applications want to directly control the capture parameters.</p>
* <p>For example, the application may wish to manually control
* ACAMERA_SENSOR_EXPOSURE_TIME, ACAMERA_SENSOR_SENSITIVITY, etc.</p>
*
* @see ACAMERA_SENSOR_EXPOSURE_TIME
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_CONTROL_CAPTURE_INTENT_MANUAL = 6,
} acamera_metadata_enum_android_control_capture_intent_t;
// ACAMERA_CONTROL_EFFECT_MODE
typedef enum acamera_metadata_enum_acamera_control_effect_mode {
/**
* <p>No color effect will be applied.</p>
*/
ACAMERA_CONTROL_EFFECT_MODE_OFF = 0,
/**
* <p>A "monocolor" effect where the image is mapped into
* a single color.</p>
* <p>This will typically be grayscale.</p>
*/
ACAMERA_CONTROL_EFFECT_MODE_MONO = 1,
/**
* <p>A "photo-negative" effect where the image's colors
* are inverted.</p>
*/
ACAMERA_CONTROL_EFFECT_MODE_NEGATIVE = 2,
/**
* <p>A "solarisation" effect (Sabattier effect) where the
* image is wholly or partially reversed in
* tone.</p>
*/
ACAMERA_CONTROL_EFFECT_MODE_SOLARIZE = 3,
/**
* <p>A "sepia" effect where the image is mapped into warm
* gray, red, and brown tones.</p>
*/
ACAMERA_CONTROL_EFFECT_MODE_SEPIA = 4,
/**
* <p>A "posterization" effect where the image uses
* discrete regions of tone rather than a continuous
* gradient of tones.</p>
*/
ACAMERA_CONTROL_EFFECT_MODE_POSTERIZE = 5,
/**
* <p>A "whiteboard" effect where the image is typically displayed
* as regions of white, with black or grey details.</p>
*/
ACAMERA_CONTROL_EFFECT_MODE_WHITEBOARD = 6,
/**
* <p>A "blackboard" effect where the image is typically displayed
* as regions of black, with white or grey details.</p>
*/
ACAMERA_CONTROL_EFFECT_MODE_BLACKBOARD = 7,
/**
* <p>An "aqua" effect where a blue hue is added to the image.</p>
*/
ACAMERA_CONTROL_EFFECT_MODE_AQUA = 8,
} acamera_metadata_enum_android_control_effect_mode_t;
// ACAMERA_CONTROL_MODE
typedef enum acamera_metadata_enum_acamera_control_mode {
/**
* <p>Full application control of pipeline.</p>
* <p>All control by the device's metering and focusing (3A)
* routines is disabled, and no other settings in
* ACAMERA_CONTROL_* have any effect, except that
* ACAMERA_CONTROL_CAPTURE_INTENT may be used by the camera
* device to select post-processing values for processing
* blocks that do not allow for manual control, or are not
* exposed by the camera API.</p>
* <p>However, the camera device's 3A routines may continue to
* collect statistics and update their internal state so that
* when control is switched to AUTO mode, good control values
* can be immediately applied.</p>
*
* @see ACAMERA_CONTROL_CAPTURE_INTENT
*/
ACAMERA_CONTROL_MODE_OFF = 0,
/**
* <p>Use settings for each individual 3A routine.</p>
* <p>Manual control of capture parameters is disabled. All
* controls in ACAMERA_CONTROL_* besides sceneMode take
* effect.</p>
*/
ACAMERA_CONTROL_MODE_AUTO = 1,
/**
* <p>Use a specific scene mode.</p>
* <p>Enabling this disables control.aeMode, control.awbMode and
* control.afMode controls; the camera device will ignore
* those settings while USE_SCENE_MODE is active (except for
* FACE_PRIORITY scene mode). Other control entries are still active.
* This setting can only be used if scene mode is supported (i.e.
* ACAMERA_CONTROL_AVAILABLE_SCENE_MODES
* contain some modes other than DISABLED).</p>
*
* @see ACAMERA_CONTROL_AVAILABLE_SCENE_MODES
*/
ACAMERA_CONTROL_MODE_USE_SCENE_MODE = 2,
/**
* <p>Same as OFF mode, except that this capture will not be
* used by camera device background auto-exposure, auto-white balance and
* auto-focus algorithms (3A) to update their statistics.</p>
* <p>Specifically, the 3A routines are locked to the last
* values set from a request with AUTO, OFF, or
* USE_SCENE_MODE, and any statistics or state updates
* collected from manual captures with OFF_KEEP_STATE will be
* discarded by the camera device.</p>
*/
ACAMERA_CONTROL_MODE_OFF_KEEP_STATE = 3,
} acamera_metadata_enum_android_control_mode_t;
// ACAMERA_CONTROL_SCENE_MODE
typedef enum acamera_metadata_enum_acamera_control_scene_mode {
/**
* <p>Indicates that no scene modes are set for a given capture request.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_DISABLED = 0,
/**
* <p>If face detection support exists, use face
* detection data for auto-focus, auto-white balance, and
* auto-exposure routines.</p>
* <p>If face detection statistics are disabled
* (i.e. ACAMERA_STATISTICS_FACE_DETECT_MODE is set to OFF),
* this should still operate correctly (but will not return
* face detection statistics to the framework).</p>
* <p>Unlike the other scene modes, ACAMERA_CONTROL_AE_MODE,
* ACAMERA_CONTROL_AWB_MODE, and ACAMERA_CONTROL_AF_MODE
* remain active when FACE_PRIORITY is set.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_AF_MODE
* @see ACAMERA_CONTROL_AWB_MODE
* @see ACAMERA_STATISTICS_FACE_DETECT_MODE
*/
ACAMERA_CONTROL_SCENE_MODE_FACE_PRIORITY = 1,
/**
* <p>Optimized for photos of quickly moving objects.</p>
* <p>Similar to SPORTS.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_ACTION = 2,
/**
* <p>Optimized for still photos of people.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_PORTRAIT = 3,
/**
* <p>Optimized for photos of distant macroscopic objects.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_LANDSCAPE = 4,
/**
* <p>Optimized for low-light settings.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_NIGHT = 5,
/**
* <p>Optimized for still photos of people in low-light
* settings.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_NIGHT_PORTRAIT = 6,
/**
* <p>Optimized for dim, indoor settings where flash must
* remain off.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_THEATRE = 7,
/**
* <p>Optimized for bright, outdoor beach settings.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_BEACH = 8,
/**
* <p>Optimized for bright, outdoor settings containing snow.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_SNOW = 9,
/**
* <p>Optimized for scenes of the setting sun.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_SUNSET = 10,
/**
* <p>Optimized to avoid blurry photos due to small amounts of
* device motion (for example: due to hand shake).</p>
*/
ACAMERA_CONTROL_SCENE_MODE_STEADYPHOTO = 11,
/**
* <p>Optimized for nighttime photos of fireworks.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_FIREWORKS = 12,
/**
* <p>Optimized for photos of quickly moving people.</p>
* <p>Similar to ACTION.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_SPORTS = 13,
/**
* <p>Optimized for dim, indoor settings with multiple moving
* people.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_PARTY = 14,
/**
* <p>Optimized for dim settings where the main light source
* is a flame.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_CANDLELIGHT = 15,
/**
* <p>Optimized for accurately capturing a photo of barcode
* for use by camera applications that wish to read the
* barcode value.</p>
*/
ACAMERA_CONTROL_SCENE_MODE_BARCODE = 16,
/**
* <p>Turn on a device-specific high dynamic range (HDR) mode.</p>
* <p>In this scene mode, the camera device captures images
* that keep a larger range of scene illumination levels
* visible in the final image. For example, when taking a
* picture of a object in front of a bright window, both
* the object and the scene through the window may be
* visible when using HDR mode, while in normal AUTO mode,
* one or the other may be poorly exposed. As a tradeoff,
* HDR mode generally takes much longer to capture a single
* image, has no user control, and may have other artifacts
* depending on the HDR method used.</p>
* <p>Therefore, HDR captures operate at a much slower rate
* than regular captures.</p>
* <p>In this mode, on LIMITED or FULL devices, when a request
* is made with a ACAMERA_CONTROL_CAPTURE_INTENT of
* STILL_CAPTURE, the camera device will capture an image
* using a high dynamic range capture technique. On LEGACY
* devices, captures that target a JPEG-format output will
* be captured with HDR, and the capture intent is not
* relevant.</p>
* <p>The HDR capture may involve the device capturing a burst
* of images internally and combining them into one, or it
* may involve the device using specialized high dynamic
* range capture hardware. In all cases, a single image is
* produced in response to a capture request submitted
* while in HDR mode.</p>
* <p>Since substantial post-processing is generally needed to
* produce an HDR image, only YUV, PRIVATE, and JPEG
* outputs are supported for LIMITED/FULL device HDR
* captures, and only JPEG outputs are supported for LEGACY
* HDR captures. Using a RAW output for HDR capture is not
* supported.</p>
* <p>Some devices may also support always-on HDR, which
* applies HDR processing at full frame rate. For these
* devices, intents other than STILL_CAPTURE will also
* produce an HDR output with no frame rate impact compared
* to normal operation, though the quality may be lower
* than for STILL_CAPTURE intents.</p>
* <p>If SCENE_MODE_HDR is used with unsupported output types
* or capture intents, the images captured will be as if
* the SCENE_MODE was not enabled at all.</p>
*
* @see ACAMERA_CONTROL_CAPTURE_INTENT
*/
ACAMERA_CONTROL_SCENE_MODE_HDR = 18,
} acamera_metadata_enum_android_control_scene_mode_t;
// ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
typedef enum acamera_metadata_enum_acamera_control_video_stabilization_mode {
/**
* <p>Video stabilization is disabled.</p>
*/
ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE_OFF = 0,
/**
* <p>Video stabilization is enabled.</p>
*/
ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE_ON = 1,
} acamera_metadata_enum_android_control_video_stabilization_mode_t;
// ACAMERA_CONTROL_AE_STATE
typedef enum acamera_metadata_enum_acamera_control_ae_state {
/**
* <p>AE is off or recently reset.</p>
* <p>When a camera device is opened, it starts in
* this state. This is a transient state, the camera device may skip reporting
* this state in capture result.</p>
*/
ACAMERA_CONTROL_AE_STATE_INACTIVE = 0,
/**
* <p>AE doesn't yet have a good set of control values
* for the current scene.</p>
* <p>This is a transient state, the camera device may skip
* reporting this state in capture result.</p>
*/
ACAMERA_CONTROL_AE_STATE_SEARCHING = 1,
/**
* <p>AE has a good set of control values for the
* current scene.</p>
*/
ACAMERA_CONTROL_AE_STATE_CONVERGED = 2,
/**
* <p>AE has been locked.</p>
*/
ACAMERA_CONTROL_AE_STATE_LOCKED = 3,
/**
* <p>AE has a good set of control values, but flash
* needs to be fired for good quality still
* capture.</p>
*/
ACAMERA_CONTROL_AE_STATE_FLASH_REQUIRED = 4,
/**
* <p>AE has been asked to do a precapture sequence
* and is currently executing it.</p>
* <p>Precapture can be triggered through setting
* ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER to START. Currently
* active and completed (if it causes camera device internal AE lock) precapture
* metering sequence can be canceled through setting
* ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER to CANCEL.</p>
* <p>Once PRECAPTURE completes, AE will transition to CONVERGED
* or FLASH_REQUIRED as appropriate. This is a transient
* state, the camera device may skip reporting this state in
* capture result.</p>
*
* @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
*/
ACAMERA_CONTROL_AE_STATE_PRECAPTURE = 5,
} acamera_metadata_enum_android_control_ae_state_t;
// ACAMERA_CONTROL_AF_STATE
typedef enum acamera_metadata_enum_acamera_control_af_state {
/**
* <p>AF is off or has not yet tried to scan/been asked
* to scan.</p>
* <p>When a camera device is opened, it starts in this
* state. This is a transient state, the camera device may
* skip reporting this state in capture
* result.</p>
*/
ACAMERA_CONTROL_AF_STATE_INACTIVE = 0,
/**
* <p>AF is currently performing an AF scan initiated the
* camera device in a continuous autofocus mode.</p>
* <p>Only used by CONTINUOUS_* AF modes. This is a transient
* state, the camera device may skip reporting this state in
* capture result.</p>
*/
ACAMERA_CONTROL_AF_STATE_PASSIVE_SCAN = 1,
/**
* <p>AF currently believes it is in focus, but may
* restart scanning at any time.</p>
* <p>Only used by CONTINUOUS_* AF modes. This is a transient
* state, the camera device may skip reporting this state in
* capture result.</p>
*/
ACAMERA_CONTROL_AF_STATE_PASSIVE_FOCUSED = 2,
/**
* <p>AF is performing an AF scan because it was
* triggered by AF trigger.</p>
* <p>Only used by AUTO or MACRO AF modes. This is a transient
* state, the camera device may skip reporting this state in
* capture result.</p>
*/
ACAMERA_CONTROL_AF_STATE_ACTIVE_SCAN = 3,
/**
* <p>AF believes it is focused correctly and has locked
* focus.</p>
* <p>This state is reached only after an explicit START AF trigger has been
* sent (ACAMERA_CONTROL_AF_TRIGGER), when good focus has been obtained.</p>
* <p>The lens will remain stationary until the AF mode (ACAMERA_CONTROL_AF_MODE) is changed or
* a new AF trigger is sent to the camera device (ACAMERA_CONTROL_AF_TRIGGER).</p>
*
* @see ACAMERA_CONTROL_AF_MODE
* @see ACAMERA_CONTROL_AF_TRIGGER
*/
ACAMERA_CONTROL_AF_STATE_FOCUSED_LOCKED = 4,
/**
* <p>AF has failed to focus successfully and has locked
* focus.</p>
* <p>This state is reached only after an explicit START AF trigger has been
* sent (ACAMERA_CONTROL_AF_TRIGGER), when good focus cannot be obtained.</p>
* <p>The lens will remain stationary until the AF mode (ACAMERA_CONTROL_AF_MODE) is changed or
* a new AF trigger is sent to the camera device (ACAMERA_CONTROL_AF_TRIGGER).</p>
*
* @see ACAMERA_CONTROL_AF_MODE
* @see ACAMERA_CONTROL_AF_TRIGGER
*/
ACAMERA_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED = 5,
/**
* <p>AF finished a passive scan without finding focus,
* and may restart scanning at any time.</p>
* <p>Only used by CONTINUOUS_* AF modes. This is a transient state, the camera
* device may skip reporting this state in capture result.</p>
* <p>LEGACY camera devices do not support this state. When a passive
* scan has finished, it will always go to PASSIVE_FOCUSED.</p>
*/
ACAMERA_CONTROL_AF_STATE_PASSIVE_UNFOCUSED = 6,
} acamera_metadata_enum_android_control_af_state_t;
// ACAMERA_CONTROL_AWB_STATE
typedef enum acamera_metadata_enum_acamera_control_awb_state {
/**
* <p>AWB is not in auto mode, or has not yet started metering.</p>
* <p>When a camera device is opened, it starts in this
* state. This is a transient state, the camera device may
* skip reporting this state in capture
* result.</p>
*/
ACAMERA_CONTROL_AWB_STATE_INACTIVE = 0,
/**
* <p>AWB doesn't yet have a good set of control
* values for the current scene.</p>
* <p>This is a transient state, the camera device
* may skip reporting this state in capture result.</p>
*/
ACAMERA_CONTROL_AWB_STATE_SEARCHING = 1,
/**
* <p>AWB has a good set of control values for the
* current scene.</p>
*/
ACAMERA_CONTROL_AWB_STATE_CONVERGED = 2,
/**
* <p>AWB has been locked.</p>
*/
ACAMERA_CONTROL_AWB_STATE_LOCKED = 3,
} acamera_metadata_enum_android_control_awb_state_t;
// ACAMERA_CONTROL_AE_LOCK_AVAILABLE
typedef enum acamera_metadata_enum_acamera_control_ae_lock_available {
ACAMERA_CONTROL_AE_LOCK_AVAILABLE_FALSE = 0,
ACAMERA_CONTROL_AE_LOCK_AVAILABLE_TRUE = 1,
} acamera_metadata_enum_android_control_ae_lock_available_t;
// ACAMERA_CONTROL_AWB_LOCK_AVAILABLE
typedef enum acamera_metadata_enum_acamera_control_awb_lock_available {
ACAMERA_CONTROL_AWB_LOCK_AVAILABLE_FALSE = 0,
ACAMERA_CONTROL_AWB_LOCK_AVAILABLE_TRUE = 1,
} acamera_metadata_enum_android_control_awb_lock_available_t;
// ACAMERA_CONTROL_ENABLE_ZSL
typedef enum acamera_metadata_enum_acamera_control_enable_zsl {
/**
* <p>Requests with ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE must be captured
* after previous requests.</p>
*
* @see ACAMERA_CONTROL_CAPTURE_INTENT
*/
ACAMERA_CONTROL_ENABLE_ZSL_FALSE = 0,
/**
* <p>Requests with ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE may or may not be
* captured before previous requests.</p>
*
* @see ACAMERA_CONTROL_CAPTURE_INTENT
*/
ACAMERA_CONTROL_ENABLE_ZSL_TRUE = 1,
} acamera_metadata_enum_android_control_enable_zsl_t;
// ACAMERA_EDGE_MODE
typedef enum acamera_metadata_enum_acamera_edge_mode {
/**
* <p>No edge enhancement is applied.</p>
*/
ACAMERA_EDGE_MODE_OFF = 0,
/**
* <p>Apply edge enhancement at a quality level that does not slow down frame rate
* relative to sensor output. It may be the same as OFF if edge enhancement will
* slow down frame rate relative to sensor.</p>
*/
ACAMERA_EDGE_MODE_FAST = 1,
/**
* <p>Apply high-quality edge enhancement, at a cost of possibly reduced output frame rate.</p>
*/
ACAMERA_EDGE_MODE_HIGH_QUALITY = 2,
/**
* <p>Edge enhancement is applied at different levels for different output streams,
* based on resolution. Streams at maximum recording resolution (see {@link
* ACameraDevice_createCaptureSession}) or below have
* edge enhancement applied, while higher-resolution streams have no edge enhancement
* applied. The level of edge enhancement for low-resolution streams is tuned so that
* frame rate is not impacted, and the quality is equal to or better than FAST (since it
* is only applied to lower-resolution outputs, quality may improve from FAST).</p>
* <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
* with YUV or PRIVATE reprocessing, where the application continuously captures
* high-resolution intermediate buffers into a circular buffer, from which a final image is
* produced via reprocessing when a user takes a picture. For such a use case, the
* high-resolution buffers must not have edge enhancement applied to maximize efficiency of
* preview and to avoid double-applying enhancement when reprocessed, while low-resolution
* buffers (used for recording or preview, generally) need edge enhancement applied for
* reasonable preview quality.</p>
* <p>This mode is guaranteed to be supported by devices that support either the
* YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
* (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES lists either of those capabilities) and it will
* be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
*
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
*/
ACAMERA_EDGE_MODE_ZERO_SHUTTER_LAG = 3,
} acamera_metadata_enum_android_edge_mode_t;
// ACAMERA_FLASH_MODE
typedef enum acamera_metadata_enum_acamera_flash_mode {
/**
* <p>Do not fire the flash for this capture.</p>
*/
ACAMERA_FLASH_MODE_OFF = 0,
/**
* <p>If the flash is available and charged, fire flash
* for this capture.</p>
*/
ACAMERA_FLASH_MODE_SINGLE = 1,
/**
* <p>Transition flash to continuously on.</p>
*/
ACAMERA_FLASH_MODE_TORCH = 2,
} acamera_metadata_enum_android_flash_mode_t;
// ACAMERA_FLASH_STATE
typedef enum acamera_metadata_enum_acamera_flash_state {
/**
* <p>No flash on camera.</p>
*/
ACAMERA_FLASH_STATE_UNAVAILABLE = 0,
/**
* <p>Flash is charging and cannot be fired.</p>
*/
ACAMERA_FLASH_STATE_CHARGING = 1,
/**
* <p>Flash is ready to fire.</p>
*/
ACAMERA_FLASH_STATE_READY = 2,
/**
* <p>Flash fired for this capture.</p>
*/
ACAMERA_FLASH_STATE_FIRED = 3,
/**
* <p>Flash partially illuminated this frame.</p>
* <p>This is usually due to the next or previous frame having
* the flash fire, and the flash spilling into this capture
* due to hardware limitations.</p>
*/
ACAMERA_FLASH_STATE_PARTIAL = 4,
} acamera_metadata_enum_android_flash_state_t;
// ACAMERA_FLASH_INFO_AVAILABLE
typedef enum acamera_metadata_enum_acamera_flash_info_available {
ACAMERA_FLASH_INFO_AVAILABLE_FALSE = 0,
ACAMERA_FLASH_INFO_AVAILABLE_TRUE = 1,
} acamera_metadata_enum_android_flash_info_available_t;
// ACAMERA_HOT_PIXEL_MODE
typedef enum acamera_metadata_enum_acamera_hot_pixel_mode {
/**
* <p>No hot pixel correction is applied.</p>
* <p>The frame rate must not be reduced relative to sensor raw output
* for this option.</p>
* <p>The hotpixel map may be returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.</p>
*
* @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
*/
ACAMERA_HOT_PIXEL_MODE_OFF = 0,
/**
* <p>Hot pixel correction is applied, without reducing frame
* rate relative to sensor raw output.</p>
* <p>The hotpixel map may be returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.</p>
*
* @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
*/
ACAMERA_HOT_PIXEL_MODE_FAST = 1,
/**
* <p>High-quality hot pixel correction is applied, at a cost
* of possibly reduced frame rate relative to sensor raw output.</p>
* <p>The hotpixel map may be returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.</p>
*
* @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
*/
ACAMERA_HOT_PIXEL_MODE_HIGH_QUALITY = 2,
} acamera_metadata_enum_android_hot_pixel_mode_t;
// ACAMERA_LENS_OPTICAL_STABILIZATION_MODE
typedef enum acamera_metadata_enum_acamera_lens_optical_stabilization_mode {
/**
* <p>Optical stabilization is unavailable.</p>
*/
ACAMERA_LENS_OPTICAL_STABILIZATION_MODE_OFF = 0,
/**
* <p>Optical stabilization is enabled.</p>
*/
ACAMERA_LENS_OPTICAL_STABILIZATION_MODE_ON = 1,
} acamera_metadata_enum_android_lens_optical_stabilization_mode_t;
// ACAMERA_LENS_FACING
typedef enum acamera_metadata_enum_acamera_lens_facing {
/**
* <p>The camera device faces the same direction as the device's screen.</p>
*/
ACAMERA_LENS_FACING_FRONT = 0,
/**
* <p>The camera device faces the opposite direction as the device's screen.</p>
*/
ACAMERA_LENS_FACING_BACK = 1,
/**
* <p>The camera device is an external camera, and has no fixed facing relative to the
* device's screen.</p>
*/
ACAMERA_LENS_FACING_EXTERNAL = 2,
} acamera_metadata_enum_android_lens_facing_t;
// ACAMERA_LENS_STATE
typedef enum acamera_metadata_enum_acamera_lens_state {
/**
* <p>The lens parameters (ACAMERA_LENS_FOCAL_LENGTH, ACAMERA_LENS_FOCUS_DISTANCE,
* ACAMERA_LENS_FILTER_DENSITY and ACAMERA_LENS_APERTURE) are not changing.</p>
*
* @see ACAMERA_LENS_APERTURE
* @see ACAMERA_LENS_FILTER_DENSITY
* @see ACAMERA_LENS_FOCAL_LENGTH
* @see ACAMERA_LENS_FOCUS_DISTANCE
*/
ACAMERA_LENS_STATE_STATIONARY = 0,
/**
* <p>One or several of the lens parameters
* (ACAMERA_LENS_FOCAL_LENGTH, ACAMERA_LENS_FOCUS_DISTANCE,
* ACAMERA_LENS_FILTER_DENSITY or ACAMERA_LENS_APERTURE) is
* currently changing.</p>
*
* @see ACAMERA_LENS_APERTURE
* @see ACAMERA_LENS_FILTER_DENSITY
* @see ACAMERA_LENS_FOCAL_LENGTH
* @see ACAMERA_LENS_FOCUS_DISTANCE
*/
ACAMERA_LENS_STATE_MOVING = 1,
} acamera_metadata_enum_android_lens_state_t;
// ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION
typedef enum acamera_metadata_enum_acamera_lens_info_focus_distance_calibration {
/**
* <p>The lens focus distance is not accurate, and the units used for
* ACAMERA_LENS_FOCUS_DISTANCE do not correspond to any physical units.</p>
* <p>Setting the lens to the same focus distance on separate occasions may
* result in a different real focus distance, depending on factors such
* as the orientation of the device, the age of the focusing mechanism,
* and the device temperature. The focus distance value will still be
* in the range of <code>[0, ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE]</code>, where 0
* represents the farthest focus.</p>
*
* @see ACAMERA_LENS_FOCUS_DISTANCE
* @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
*/
ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED = 0,
/**
* <p>The lens focus distance is measured in diopters.</p>
* <p>However, setting the lens to the same focus distance
* on separate occasions may result in a different real
* focus distance, depending on factors such as the
* orientation of the device, the age of the focusing
* mechanism, and the device temperature.</p>
*/
ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE = 1,
/**
* <p>The lens focus distance is measured in diopters, and
* is calibrated.</p>
* <p>The lens mechanism is calibrated so that setting the
* same focus distance is repeatable on multiple
* occasions with good accuracy, and the focus distance
* corresponds to the real physical distance to the plane
* of best focus.</p>
*/
ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED = 2,
} acamera_metadata_enum_android_lens_info_focus_distance_calibration_t;
// ACAMERA_NOISE_REDUCTION_MODE
typedef enum acamera_metadata_enum_acamera_noise_reduction_mode {
/**
* <p>No noise reduction is applied.</p>
*/
ACAMERA_NOISE_REDUCTION_MODE_OFF = 0,
/**
* <p>Noise reduction is applied without reducing frame rate relative to sensor
* output. It may be the same as OFF if noise reduction will reduce frame rate
* relative to sensor.</p>
*/
ACAMERA_NOISE_REDUCTION_MODE_FAST = 1,
/**
* <p>High-quality noise reduction is applied, at the cost of possibly reduced frame
* rate relative to sensor output.</p>
*/
ACAMERA_NOISE_REDUCTION_MODE_HIGH_QUALITY = 2,
/**
* <p>MINIMAL noise reduction is applied without reducing frame rate relative to
* sensor output. </p>
*/
ACAMERA_NOISE_REDUCTION_MODE_MINIMAL = 3,
/**
* <p>Noise reduction is applied at different levels for different output streams,
* based on resolution. Streams at maximum recording resolution (see {@link
* ACameraDevice_createCaptureSession}) or below have noise
* reduction applied, while higher-resolution streams have MINIMAL (if supported) or no
* noise reduction applied (if MINIMAL is not supported.) The degree of noise reduction
* for low-resolution streams is tuned so that frame rate is not impacted, and the quality
* is equal to or better than FAST (since it is only applied to lower-resolution outputs,
* quality may improve from FAST).</p>
* <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
* with YUV or PRIVATE reprocessing, where the application continuously captures
* high-resolution intermediate buffers into a circular buffer, from which a final image is
* produced via reprocessing when a user takes a picture. For such a use case, the
* high-resolution buffers must not have noise reduction applied to maximize efficiency of
* preview and to avoid over-applying noise filtering when reprocessing, while
* low-resolution buffers (used for recording or preview, generally) need noise reduction
* applied for reasonable preview quality.</p>
* <p>This mode is guaranteed to be supported by devices that support either the
* YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
* (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES lists either of those capabilities) and it will
* be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
*
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
*/
ACAMERA_NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG = 4,
} acamera_metadata_enum_android_noise_reduction_mode_t;
// ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
typedef enum acamera_metadata_enum_acamera_request_available_capabilities {
/**
* <p>The minimal set of capabilities that every camera
* device (regardless of ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL)
* supports.</p>
* <p>This capability is listed by all normal devices, and
* indicates that the camera device has a feature set
* that's comparable to the baseline requirements for the
* older android.hardware.Camera API.</p>
* <p>Devices with the DEPTH_OUTPUT capability might not list this
* capability, indicating that they support only depth measurement,
* not standard color output.</p>
*
* @see ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
*/
ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE = 0,
/**
* <p>The camera device can be manually controlled (3A algorithms such
* as auto-exposure, and auto-focus can be bypassed).
* The camera device supports basic manual control of the sensor image
* acquisition related stages. This means the following controls are
* guaranteed to be supported:</p>
* <ul>
* <li>Manual frame duration control<ul>
* <li>ACAMERA_SENSOR_FRAME_DURATION</li>
* <li>ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION</li>
* </ul>
* </li>
* <li>Manual exposure control<ul>
* <li>ACAMERA_SENSOR_EXPOSURE_TIME</li>
* <li>ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE</li>
* </ul>
* </li>
* <li>Manual sensitivity control<ul>
* <li>ACAMERA_SENSOR_SENSITIVITY</li>
* <li>ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE</li>
* </ul>
* </li>
* <li>Manual lens control (if the lens is adjustable)<ul>
* <li>ACAMERA_LENS_*</li>
* </ul>
* </li>
* <li>Manual flash control (if a flash unit is present)<ul>
* <li>ACAMERA_FLASH_*</li>
* </ul>
* </li>
* <li>Manual black level locking<ul>
* <li>ACAMERA_BLACK_LEVEL_LOCK</li>
* </ul>
* </li>
* <li>Auto exposure lock<ul>
* <li>ACAMERA_CONTROL_AE_LOCK</li>
* </ul>
* </li>
* </ul>
* <p>If any of the above 3A algorithms are enabled, then the camera
* device will accurately report the values applied by 3A in the
* result.</p>
* <p>A given camera device may also support additional manual sensor controls,
* but this capability only covers the above list of controls.</p>
* <p>If this is supported, android.scaler.streamConfigurationMap will
* additionally return a min frame duration that is greater than
* zero for each supported size-format combination.</p>
*
* @see ACAMERA_BLACK_LEVEL_LOCK
* @see ACAMERA_CONTROL_AE_LOCK
* @see ACAMERA_SENSOR_EXPOSURE_TIME
* @see ACAMERA_SENSOR_FRAME_DURATION
* @see ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE
* @see ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION
* @see ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR = 1,
/**
* <p>The camera device post-processing stages can be manually controlled.
* The camera device supports basic manual control of the image post-processing
* stages. This means the following controls are guaranteed to be supported:</p>
* <ul>
* <li>
* <p>Manual tonemap control</p>
* <ul>
* <li>android.tonemap.curve</li>
* <li>ACAMERA_TONEMAP_MODE</li>
* <li>ACAMERA_TONEMAP_MAX_CURVE_POINTS</li>
* <li>ACAMERA_TONEMAP_GAMMA</li>
* <li>ACAMERA_TONEMAP_PRESET_CURVE</li>
* </ul>
* </li>
* <li>
* <p>Manual white balance control</p>
* <ul>
* <li>ACAMERA_COLOR_CORRECTION_TRANSFORM</li>
* <li>ACAMERA_COLOR_CORRECTION_GAINS</li>
* </ul>
* </li>
* <li>Manual lens shading map control<ul>
* <li>ACAMERA_SHADING_MODE</li>
* <li>ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE</li>
* <li>ACAMERA_STATISTICS_LENS_SHADING_MAP</li>
* <li>ACAMERA_LENS_INFO_SHADING_MAP_SIZE</li>
* </ul>
* </li>
* <li>Manual aberration correction control (if aberration correction is supported)<ul>
* <li>ACAMERA_COLOR_CORRECTION_ABERRATION_MODE</li>
* <li>ACAMERA_COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES</li>
* </ul>
* </li>
* <li>Auto white balance lock<ul>
* <li>ACAMERA_CONTROL_AWB_LOCK</li>
* </ul>
* </li>
* </ul>
* <p>If auto white balance is enabled, then the camera device
* will accurately report the values applied by AWB in the result.</p>
* <p>A given camera device may also support additional post-processing
* controls, but this capability only covers the above list of controls.</p>
*
* @see ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
* @see ACAMERA_COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
* @see ACAMERA_COLOR_CORRECTION_GAINS
* @see ACAMERA_COLOR_CORRECTION_TRANSFORM
* @see ACAMERA_CONTROL_AWB_LOCK
* @see ACAMERA_LENS_INFO_SHADING_MAP_SIZE
* @see ACAMERA_SHADING_MODE
* @see ACAMERA_STATISTICS_LENS_SHADING_MAP
* @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
* @see ACAMERA_TONEMAP_GAMMA
* @see ACAMERA_TONEMAP_MAX_CURVE_POINTS
* @see ACAMERA_TONEMAP_MODE
* @see ACAMERA_TONEMAP_PRESET_CURVE
*/
ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING = 2,
/**
* <p>The camera device supports outputting RAW buffers and
* metadata for interpreting them.</p>
* <p>Devices supporting the RAW capability allow both for
* saving DNG files, and for direct application processing of
* raw sensor images.</p>
* <ul>
* <li>RAW_SENSOR is supported as an output format.</li>
* <li>The maximum available resolution for RAW_SENSOR streams
* will match either the value in
* ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE or
* ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE.</li>
* <li>All DNG-related optional metadata entries are provided
* by the camera device.</li>
* </ul>
*
* @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
* @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
*/
ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_RAW = 3,
/**
* <p>The camera device supports accurately reporting the sensor settings for many of
* the sensor controls while the built-in 3A algorithm is running. This allows
* reporting of sensor settings even when these settings cannot be manually changed.</p>
* <p>The values reported for the following controls are guaranteed to be available
* in the CaptureResult, including when 3A is enabled:</p>
* <ul>
* <li>Exposure control<ul>
* <li>ACAMERA_SENSOR_EXPOSURE_TIME</li>
* </ul>
* </li>
* <li>Sensitivity control<ul>
* <li>ACAMERA_SENSOR_SENSITIVITY</li>
* </ul>
* </li>
* <li>Lens controls (if the lens is adjustable)<ul>
* <li>ACAMERA_LENS_FOCUS_DISTANCE</li>
* <li>ACAMERA_LENS_APERTURE</li>
* </ul>
* </li>
* </ul>
* <p>This capability is a subset of the MANUAL_SENSOR control capability, and will
* always be included if the MANUAL_SENSOR capability is available.</p>
*
* @see ACAMERA_LENS_APERTURE
* @see ACAMERA_LENS_FOCUS_DISTANCE
* @see ACAMERA_SENSOR_EXPOSURE_TIME
* @see ACAMERA_SENSOR_SENSITIVITY
*/
ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS = 5,
/**
* <p>The camera device supports capturing high-resolution images at >= 20 frames per
* second, in at least the uncompressed YUV format, when post-processing settings are set
* to FAST. Additionally, maximum-resolution images can be captured at >= 10 frames
* per second. Here, 'high resolution' means at least 8 megapixels, or the maximum
* resolution of the device, whichever is smaller.</p>
* <p>More specifically, this means that at least one output {@link
* AIMAGE_FORMAT_YUV_420_888} size listed in
* {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS} is larger or equal to the
* 'high resolution' defined above, and can be captured at at least 20 fps.
* For the largest {@link AIMAGE_FORMAT_YUV_420_888} size listed in
* {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}, camera device can capture this
* size for at least 10 frames per second.
* Also the ACAMERA_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES entry lists at least one FPS range
* where the minimum FPS is >= 1 / minimumFrameDuration for the largest YUV_420_888 size.</p>
* <p>If the device supports the {@link AIMAGE_FORMAT_RAW10}, {@link
* AIMAGE_FORMAT_RAW12}, then those can also be captured at the same rate
* as the maximum-size YUV_420_888 resolution is.</p>
* <p>In addition, the ACAMERA_SYNC_MAX_LATENCY field is guaranted to have a value between 0
* and 4, inclusive. ACAMERA_CONTROL_AE_LOCK_AVAILABLE and ACAMERA_CONTROL_AWB_LOCK_AVAILABLE
* are also guaranteed to be <code>true</code> so burst capture with these two locks ON yields
* consistent image output.</p>
*
* @see ACAMERA_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
* @see ACAMERA_CONTROL_AE_LOCK_AVAILABLE
* @see ACAMERA_CONTROL_AWB_LOCK_AVAILABLE
* @see ACAMERA_SYNC_MAX_LATENCY
*/
ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE = 6,
/**
* <p>The camera device can produce depth measurements from its field of view.</p>
* <p>This capability requires the camera device to support the following:</p>
* <ul>
* <li>{@link AIMAGE_FORMAT_DEPTH16} is supported as an output format.</li>
* <li>{@link AIMAGE_FORMAT_DEPTH_POINT_CLOUD} is optionally supported as an
* output format.</li>
* <li>This camera device, and all camera devices with the same ACAMERA_LENS_FACING,
* will list the following calibration entries in {@link ACameraMetadata} from both
* {@link ACameraManager_getCameraCharacteristics} and
* {@link ACameraCaptureSession_captureCallback_result}:<ul>
* <li>ACAMERA_LENS_POSE_TRANSLATION</li>
* <li>ACAMERA_LENS_POSE_ROTATION</li>
* <li>ACAMERA_LENS_INTRINSIC_CALIBRATION</li>
* <li>ACAMERA_LENS_RADIAL_DISTORTION</li>
* </ul>
* </li>
* <li>The ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE entry is listed by this device.</li>
* <li>A LIMITED camera with only the DEPTH_OUTPUT capability does not have to support
* normal YUV_420_888, JPEG, and PRIV-format outputs. It only has to support the DEPTH16
* format.</li>
* </ul>
* <p>Generally, depth output operates at a slower frame rate than standard color capture,
* so the DEPTH16 and DEPTH_POINT_CLOUD formats will commonly have a stall duration that
* should be accounted for (see
* {@link ACAMERA_DEPTH_AVAILABLE_DEPTH_STALL_DURATIONS}).
* On a device that supports both depth and color-based output, to enable smooth preview,
* using a repeating burst is recommended, where a depth-output target is only included
* once every N frames, where N is the ratio between preview output rate and depth output
* rate, including depth stall time.</p>
*
* @see ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE
* @see ACAMERA_LENS_FACING
* @see ACAMERA_LENS_INTRINSIC_CALIBRATION
* @see ACAMERA_LENS_POSE_ROTATION
* @see ACAMERA_LENS_POSE_TRANSLATION
* @see ACAMERA_LENS_RADIAL_DISTORTION
*/
ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT = 8,
} acamera_metadata_enum_android_request_available_capabilities_t;
// ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
typedef enum acamera_metadata_enum_acamera_scaler_available_stream_configurations {
ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT = 0,
ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT = 1,
} acamera_metadata_enum_android_scaler_available_stream_configurations_t;
// ACAMERA_SCALER_CROPPING_TYPE
typedef enum acamera_metadata_enum_acamera_scaler_cropping_type {
/**
* <p>The camera device only supports centered crop regions.</p>
*/
ACAMERA_SCALER_CROPPING_TYPE_CENTER_ONLY = 0,
/**
* <p>The camera device supports arbitrarily chosen crop regions.</p>
*/
ACAMERA_SCALER_CROPPING_TYPE_FREEFORM = 1,
} acamera_metadata_enum_android_scaler_cropping_type_t;
// ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
typedef enum acamera_metadata_enum_acamera_sensor_reference_illuminant1 {
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT = 1,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT = 2,
/**
* <p>Incandescent light</p>
*/
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN = 3,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_FLASH = 4,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER = 9,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER = 10,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_SHADE = 11,
/**
* <p>D 5700 - 7100K</p>
*/
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT = 12,
/**
* <p>N 4600 - 5400K</p>
*/
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT = 13,
/**
* <p>W 3900 - 4500K</p>
*/
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT = 14,
/**
* <p>WW 3200 - 3700K</p>
*/
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT = 15,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A = 17,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B = 18,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C = 19,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D55 = 20,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D65 = 21,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D75 = 22,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D50 = 23,
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN = 24,
} acamera_metadata_enum_android_sensor_reference_illuminant1_t;
// ACAMERA_SENSOR_TEST_PATTERN_MODE
typedef enum acamera_metadata_enum_acamera_sensor_test_pattern_mode {
/**
* <p>No test pattern mode is used, and the camera
* device returns captures from the image sensor.</p>
* <p>This is the default if the key is not set.</p>
*/
ACAMERA_SENSOR_TEST_PATTERN_MODE_OFF = 0,
/**
* <p>Each pixel in <code>[R, G_even, G_odd, B]</code> is replaced by its
* respective color channel provided in
* ACAMERA_SENSOR_TEST_PATTERN_DATA.</p>
* <p>For example:</p>
* <pre><code>android.testPatternData = [0, 0xFFFFFFFF, 0xFFFFFFFF, 0]
* </code></pre>
* <p>All green pixels are 100% green. All red/blue pixels are black.</p>
* <pre><code>android.testPatternData = [0xFFFFFFFF, 0, 0xFFFFFFFF, 0]
* </code></pre>
* <p>All red pixels are 100% red. Only the odd green pixels
* are 100% green. All blue pixels are 100% black.</p>
*
* @see ACAMERA_SENSOR_TEST_PATTERN_DATA
*/
ACAMERA_SENSOR_TEST_PATTERN_MODE_SOLID_COLOR = 1,
/**
* <p>All pixel data is replaced with an 8-bar color pattern.</p>
* <p>The vertical bars (left-to-right) are as follows:</p>
* <ul>
* <li>100% white</li>
* <li>yellow</li>
* <li>cyan</li>
* <li>green</li>
* <li>magenta</li>
* <li>red</li>
* <li>blue</li>
* <li>black</li>
* </ul>
* <p>In general the image would look like the following:</p>
* <pre><code>W Y C G M R B K
* W Y C G M R B K
* W Y C G M R B K
* W Y C G M R B K
* W Y C G M R B K
* . . . . . . . .
* . . . . . . . .
* . . . . . . . .
*
* (B = Blue, K = Black)
* </code></pre>
* <p>Each bar should take up 1/8 of the sensor pixel array width.
* When this is not possible, the bar size should be rounded
* down to the nearest integer and the pattern can repeat
* on the right side.</p>
* <p>Each bar's height must always take up the full sensor
* pixel array height.</p>
* <p>Each pixel in this test pattern must be set to either
* 0% intensity or 100% intensity.</p>
*/
ACAMERA_SENSOR_TEST_PATTERN_MODE_COLOR_BARS = 2,
/**
* <p>The test pattern is similar to COLOR_BARS, except that
* each bar should start at its specified color at the top,
* and fade to gray at the bottom.</p>
* <p>Furthermore each bar is further subdivided into a left and
* right half. The left half should have a smooth gradient,
* and the right half should have a quantized gradient.</p>
* <p>In particular, the right half's should consist of blocks of the
* same color for 1/16th active sensor pixel array width.</p>
* <p>The least significant bits in the quantized gradient should
* be copied from the most significant bits of the smooth gradient.</p>
* <p>The height of each bar should always be a multiple of 128.
* When this is not the case, the pattern should repeat at the bottom
* of the image.</p>
*/
ACAMERA_SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY = 3,
/**
* <p>All pixel data is replaced by a pseudo-random sequence
* generated from a PN9 512-bit sequence (typically implemented
* in hardware with a linear feedback shift register).</p>
* <p>The generator should be reset at the beginning of each frame,
* and thus each subsequent raw frame with this test pattern should
* be exactly the same as the last.</p>
*/
ACAMERA_SENSOR_TEST_PATTERN_MODE_PN9 = 4,
/**
* <p>The first custom test pattern. All custom patterns that are
* available only on this camera device are at least this numeric
* value.</p>
* <p>All of the custom test patterns will be static
* (that is the raw image must not vary from frame to frame).</p>
*/
ACAMERA_SENSOR_TEST_PATTERN_MODE_CUSTOM1 = 256,
} acamera_metadata_enum_android_sensor_test_pattern_mode_t;
// ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
typedef enum acamera_metadata_enum_acamera_sensor_info_color_filter_arrangement {
ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB = 0,
ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG = 1,
ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG = 2,
ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR = 3,
/**
* <p>Sensor is not Bayer; output has 3 16-bit
* values for each pixel, instead of just 1 16-bit value
* per pixel.</p>
*/
ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB = 4,
} acamera_metadata_enum_android_sensor_info_color_filter_arrangement_t;
// ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE
typedef enum acamera_metadata_enum_acamera_sensor_info_timestamp_source {
/**
* <p>Timestamps from ACAMERA_SENSOR_TIMESTAMP are in nanoseconds and monotonic,
* but can not be compared to timestamps from other subsystems
* (e.g. accelerometer, gyro etc.), or other instances of the same or different
* camera devices in the same system. Timestamps between streams and results for
* a single camera instance are comparable, and the timestamps for all buffers
* and the result metadata generated by a single capture are identical.</p>
*
* @see ACAMERA_SENSOR_TIMESTAMP
*/
ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN = 0,
/**
* <p>Timestamps from ACAMERA_SENSOR_TIMESTAMP are in the same timebase as
* <a href="https://developer.android.com/reference/android/os/SystemClock.html#elapsedRealtimeNanos">elapsedRealtimeNanos</a>
* (or CLOCK_BOOTTIME), and they can be compared to other timestamps using that base.</p>
*
* @see ACAMERA_SENSOR_TIMESTAMP
*/
ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME = 1,
} acamera_metadata_enum_android_sensor_info_timestamp_source_t;
// ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED
typedef enum acamera_metadata_enum_acamera_sensor_info_lens_shading_applied {
ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED_FALSE = 0,
ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED_TRUE = 1,
} acamera_metadata_enum_android_sensor_info_lens_shading_applied_t;
// ACAMERA_SHADING_MODE
typedef enum acamera_metadata_enum_acamera_shading_mode {
/**
* <p>No lens shading correction is applied.</p>
*/
ACAMERA_SHADING_MODE_OFF = 0,
/**
* <p>Apply lens shading corrections, without slowing
* frame rate relative to sensor raw output</p>
*/
ACAMERA_SHADING_MODE_FAST = 1,
/**
* <p>Apply high-quality lens shading correction, at the
* cost of possibly reduced frame rate.</p>
*/
ACAMERA_SHADING_MODE_HIGH_QUALITY = 2,
} acamera_metadata_enum_android_shading_mode_t;
// ACAMERA_STATISTICS_FACE_DETECT_MODE
typedef enum acamera_metadata_enum_acamera_statistics_face_detect_mode {
/**
* <p>Do not include face detection statistics in capture
* results.</p>
*/
ACAMERA_STATISTICS_FACE_DETECT_MODE_OFF = 0,
/**
* <p>Return face rectangle and confidence values only.</p>
*/
ACAMERA_STATISTICS_FACE_DETECT_MODE_SIMPLE = 1,
/**
* <p>Return all face
* metadata.</p>
* <p>In this mode, face rectangles, scores, landmarks, and face IDs are all valid.</p>
*/
ACAMERA_STATISTICS_FACE_DETECT_MODE_FULL = 2,
} acamera_metadata_enum_android_statistics_face_detect_mode_t;
// ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE
typedef enum acamera_metadata_enum_acamera_statistics_hot_pixel_map_mode {
/**
* <p>Hot pixel map production is disabled.</p>
*/
ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE_OFF = 0,
/**
* <p>Hot pixel map production is enabled.</p>
*/
ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE_ON = 1,
} acamera_metadata_enum_android_statistics_hot_pixel_map_mode_t;
// ACAMERA_STATISTICS_SCENE_FLICKER
typedef enum acamera_metadata_enum_acamera_statistics_scene_flicker {
/**
* <p>The camera device does not detect any flickering illumination
* in the current scene.</p>
*/
ACAMERA_STATISTICS_SCENE_FLICKER_NONE = 0,
/**
* <p>The camera device detects illumination flickering at 50Hz
* in the current scene.</p>
*/
ACAMERA_STATISTICS_SCENE_FLICKER_50HZ = 1,
/**
* <p>The camera device detects illumination flickering at 60Hz
* in the current scene.</p>
*/
ACAMERA_STATISTICS_SCENE_FLICKER_60HZ = 2,
} acamera_metadata_enum_android_statistics_scene_flicker_t;
// ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
typedef enum acamera_metadata_enum_acamera_statistics_lens_shading_map_mode {
/**
* <p>Do not include a lens shading map in the capture result.</p>
*/
ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE_OFF = 0,
/**
* <p>Include a lens shading map in the capture result.</p>
*/
ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE_ON = 1,
} acamera_metadata_enum_android_statistics_lens_shading_map_mode_t;
// ACAMERA_TONEMAP_MODE
typedef enum acamera_metadata_enum_acamera_tonemap_mode {
/**
* <p>Use the tone mapping curve specified in
* the ACAMERA_TONEMAPCURVE_* entries.</p>
* <p>All color enhancement and tonemapping must be disabled, except
* for applying the tonemapping curve specified by
* android.tonemap.curve.</p>
* <p>Must not slow down frame rate relative to raw
* sensor output.</p>
*/
ACAMERA_TONEMAP_MODE_CONTRAST_CURVE = 0,
/**
* <p>Advanced gamma mapping and color enhancement may be applied, without
* reducing frame rate compared to raw sensor output.</p>
*/
ACAMERA_TONEMAP_MODE_FAST = 1,
/**
* <p>High-quality gamma mapping and color enhancement will be applied, at
* the cost of possibly reduced frame rate compared to raw sensor output.</p>
*/
ACAMERA_TONEMAP_MODE_HIGH_QUALITY = 2,
/**
* <p>Use the gamma value specified in ACAMERA_TONEMAP_GAMMA to peform
* tonemapping.</p>
* <p>All color enhancement and tonemapping must be disabled, except
* for applying the tonemapping curve specified by ACAMERA_TONEMAP_GAMMA.</p>
* <p>Must not slow down frame rate relative to raw sensor output.</p>
*
* @see ACAMERA_TONEMAP_GAMMA
*/
ACAMERA_TONEMAP_MODE_GAMMA_VALUE = 3,
/**
* <p>Use the preset tonemapping curve specified in
* ACAMERA_TONEMAP_PRESET_CURVE to peform tonemapping.</p>
* <p>All color enhancement and tonemapping must be disabled, except
* for applying the tonemapping curve specified by
* ACAMERA_TONEMAP_PRESET_CURVE.</p>
* <p>Must not slow down frame rate relative to raw sensor output.</p>
*
* @see ACAMERA_TONEMAP_PRESET_CURVE
*/
ACAMERA_TONEMAP_MODE_PRESET_CURVE = 4,
} acamera_metadata_enum_android_tonemap_mode_t;
// ACAMERA_TONEMAP_PRESET_CURVE
typedef enum acamera_metadata_enum_acamera_tonemap_preset_curve {
/**
* <p>Tonemapping curve is defined by sRGB</p>
*/
ACAMERA_TONEMAP_PRESET_CURVE_SRGB = 0,
/**
* <p>Tonemapping curve is defined by ITU-R BT.709</p>
*/
ACAMERA_TONEMAP_PRESET_CURVE_REC709 = 1,
} acamera_metadata_enum_android_tonemap_preset_curve_t;
// ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
typedef enum acamera_metadata_enum_acamera_info_supported_hardware_level {
/**
* <p>This camera device does not have enough capabilities to qualify as a <code>FULL</code> device or
* better.</p>
* <p>Only the stream configurations listed in the <code>LEGACY</code> and <code>LIMITED</code> tables in the
* {@link ACameraDevice_createCaptureSession} documentation are guaranteed to be supported.</p>
* <p>All <code>LIMITED</code> devices support the <code>BACKWARDS_COMPATIBLE</code> capability, indicating basic
* support for color image capture. The only exception is that the device may
* alternatively support only the <code>DEPTH_OUTPUT</code> capability, if it can only output depth
* measurements and not color images.</p>
* <p><code>LIMITED</code> devices and above require the use of ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
* to lock exposure metering (and calculate flash power, for cameras with flash) before
* capturing a high-quality still image.</p>
* <p>A <code>LIMITED</code> device that only lists the <code>BACKWARDS_COMPATIBLE</code> capability is only
* required to support full-automatic operation and post-processing (<code>OFF</code> is not
* supported for ACAMERA_CONTROL_AE_MODE, ACAMERA_CONTROL_AF_MODE, or
* ACAMERA_CONTROL_AWB_MODE)</p>
* <p>Additional capabilities may optionally be supported by a <code>LIMITED</code>-level device, and
* can be checked for in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
*
* @see ACAMERA_CONTROL_AE_MODE
* @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
* @see ACAMERA_CONTROL_AF_MODE
* @see ACAMERA_CONTROL_AWB_MODE
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
*/
ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED = 0,
/**
* <p>This camera device is capable of supporting advanced imaging applications.</p>
* <p>The stream configurations listed in the <code>FULL</code>, <code>LEGACY</code> and <code>LIMITED</code> tables in the
* {@link ACameraDevice_createCaptureSession} documentation are guaranteed to be supported.</p>
* <p>A <code>FULL</code> device will support below capabilities:</p>
* <ul>
* <li><code>BURST_CAPTURE</code> capability (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
* <code>BURST_CAPTURE</code>)</li>
* <li>Per frame control (ACAMERA_SYNC_MAX_LATENCY <code>==</code> PER_FRAME_CONTROL)</li>
* <li>Manual sensor control (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains <code>MANUAL_SENSOR</code>)</li>
* <li>Manual post-processing control (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
* <code>MANUAL_POST_PROCESSING</code>)</li>
* <li>The required exposure time range defined in ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE</li>
* <li>The required maxFrameDuration defined in ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION</li>
* </ul>
* <p>Note:
* Pre-API level 23, FULL devices also supported arbitrary cropping region
* (ACAMERA_SCALER_CROPPING_TYPE <code>== FREEFORM</code>); this requirement was relaxed in API level
* 23, and <code>FULL</code> devices may only support <code>CENTERED</code> cropping.</p>
*
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
* @see ACAMERA_SCALER_CROPPING_TYPE
* @see ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE
* @see ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION
* @see ACAMERA_SYNC_MAX_LATENCY
*/
ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_FULL = 1,
/**
* <p>This camera device is running in backward compatibility mode.</p>
* <p>Only the stream configurations listed in the <code>LEGACY</code> table in the {@link
* ACameraDevice_createCaptureSession} documentation are supported.</p>
* <p>A <code>LEGACY</code> device does not support per-frame control, manual sensor control, manual
* post-processing, arbitrary cropping regions, and has relaxed performance constraints.
* No additional capabilities beyond <code>BACKWARD_COMPATIBLE</code> will ever be listed by a
* <code>LEGACY</code> device in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
* <p>In addition, the ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is not functional on <code>LEGACY</code>
* devices. Instead, every request that includes a JPEG-format output target is treated
* as triggering a still capture, internally executing a precapture trigger. This may
* fire the flash for flash power metering during precapture, and then fire the flash
* for the final capture, if a flash is available on the device and the AE mode is set to
* enable the flash.</p>
*
* @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
*/
ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY = 2,
/**
* <p>This camera device is capable of YUV reprocessing and RAW data capture, in addition to
* FULL-level capabilities.</p>
* <p>The stream configurations listed in the <code>LEVEL_3</code>, <code>RAW</code>, <code>FULL</code>, <code>LEGACY</code> and
* <code>LIMITED</code> tables in the {@link
* ACameraDevice_createCaptureSession}
* documentation are guaranteed to be supported.</p>
* <p>The following additional capabilities are guaranteed to be supported:</p>
* <ul>
* <li><code>YUV_REPROCESSING</code> capability (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
* <code>YUV_REPROCESSING</code>)</li>
* <li><code>RAW</code> capability (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
* <code>RAW</code>)</li>
* </ul>
*
* @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
*/
ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_3 = 3,
} acamera_metadata_enum_android_info_supported_hardware_level_t;
// ACAMERA_BLACK_LEVEL_LOCK
typedef enum acamera_metadata_enum_acamera_black_level_lock {
ACAMERA_BLACK_LEVEL_LOCK_OFF = 0,
ACAMERA_BLACK_LEVEL_LOCK_ON = 1,
} acamera_metadata_enum_android_black_level_lock_t;
// ACAMERA_SYNC_FRAME_NUMBER
typedef enum acamera_metadata_enum_acamera_sync_frame_number {
/**
* <p>The current result is not yet fully synchronized to any request.</p>
* <p>Synchronization is in progress, and reading metadata from this
* result may include a mix of data that have taken effect since the
* last synchronization time.</p>
* <p>In some future result, within ACAMERA_SYNC_MAX_LATENCY frames,
* this value will update to the actual frame number frame number
* the result is guaranteed to be synchronized to (as long as the
* request settings remain constant).</p>
*
* @see ACAMERA_SYNC_MAX_LATENCY
*/
ACAMERA_SYNC_FRAME_NUMBER_CONVERGING = -1,
/**
* <p>The current result's synchronization status is unknown.</p>
* <p>The result may have already converged, or it may be in
* progress. Reading from this result may include some mix
* of settings from past requests.</p>
* <p>After a settings change, the new settings will eventually all
* take effect for the output buffers and results. However, this
* value will not change when that happens. Altering settings
* rapidly may provide outcomes using mixes of settings from recent
* requests.</p>
* <p>This value is intended primarily for backwards compatibility with
* the older camera implementations (for android.hardware.Camera).</p>
*/
ACAMERA_SYNC_FRAME_NUMBER_UNKNOWN = -2,
} acamera_metadata_enum_android_sync_frame_number_t;
// ACAMERA_SYNC_MAX_LATENCY
typedef enum acamera_metadata_enum_acamera_sync_max_latency {
/**
* <p>Every frame has the requests immediately applied.</p>
* <p>Changing controls over multiple requests one after another will
* produce results that have those controls applied atomically
* each frame.</p>
* <p>All FULL capability devices will have this as their maxLatency.</p>
*/
ACAMERA_SYNC_MAX_LATENCY_PER_FRAME_CONTROL = 0,
/**
* <p>Each new frame has some subset (potentially the entire set)
* of the past requests applied to the camera settings.</p>
* <p>By submitting a series of identical requests, the camera device
* will eventually have the camera settings applied, but it is
* unknown when that exact point will be.</p>
* <p>All LEGACY capability devices will have this as their maxLatency.</p>
*/
ACAMERA_SYNC_MAX_LATENCY_UNKNOWN = -1,
} acamera_metadata_enum_android_sync_max_latency_t;
// ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS
typedef enum acamera_metadata_enum_acamera_depth_available_depth_stream_configurations {
ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS_OUTPUT = 0,
ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS_INPUT = 1,
} acamera_metadata_enum_android_depth_available_depth_stream_configurations_t;
// ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE
typedef enum acamera_metadata_enum_acamera_depth_depth_is_exclusive {
ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE_FALSE = 0,
ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE_TRUE = 1,
} acamera_metadata_enum_android_depth_depth_is_exclusive_t;
#endif /* __ANDROID_API__ >= 24 */
__END_DECLS
#endif /* _NDK_CAMERA_METADATA_TAGS_H */
/** @} */