CameraNDK: codegen metadata tag documents
Bug: 27102995
Change-Id: I8d0c12f772df784a87a5d4059174544295001e8b
diff --git a/include/camera/ndk/NdkCameraMetadataTags.h b/include/camera/ndk/NdkCameraMetadataTags.h
index 2fb156f..155f221 100644
--- a/include/camera/ndk/NdkCameraMetadataTags.h
+++ b/include/camera/ndk/NdkCameraMetadataTags.h
@@ -96,372 +96,5243 @@
* 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 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 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 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
+ * {@link android.hardware.camera2.CaptureResult capture results}.</p>
+ * <p>When set to OFF_KEEP_STATE, it is similar to OFF mode, the only difference
+ * is that this frame will not be used by camera device background 3A statistics
+ * update, as if this frame is never captured. This mode can be used in the scenario
+ * where the application doesn't want a 3A manual control capture to affect
+ * the subsequent auto 3A capture results.</p>
+ *
+ * @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
+ * {@link android.media.CamcorderProfile CamcorderProfile}, that is, a
+ * {@link android.media.CamcorderProfile CamcorderProfile} that has
+ * {@link android.media.CamcorderProfile#quality quality} in
+ * the range [{@link android.media.CamcorderProfile#QUALITY_LOW QUALITY_LOW},
+ * {@link android.media.CamcorderProfile#QUALITY_2160P QUALITY_2160P}], if the profile is
+ * supported by the device and has
+ * {@link android.media.CamcorderProfile#videoFrameRate videoFrameRate} <code>x</code>, this list will
+ * always include (<code>x</code>,<code>x</code>).</p>
+ * </li>
+ * <li>
+ * <p>Also, a camera device must either not support any
+ * {@link android.media.CamcorderProfile CamcorderProfile},
+ * or support at least one
+ * normal {@link android.media.CamcorderProfile CamcorderProfile} that has
+ * {@link android.media.CamcorderProfile#videoFrameRate videoFrameRate} <code>x</code> >= 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>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center"></td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Camera device auto exposure algorithm is disabled</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ * <p>When ACAMERA_CONTROL_AE_MODE is AE_MODE_ON_*:</p>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Camera device initiates AE scan</td>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">Values changing</td>
+ * </tr>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">ACAMERA_CONTROL_AE_LOCK is ON</td>
+ * <td align="center">LOCKED</td>
+ * <td align="center">Values locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">Camera device finishes AE scan</td>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Good values, not changing</td>
+ * </tr>
+ * <tr>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">Camera device finishes AE scan</td>
+ * <td align="center">FLASH_REQUIRED</td>
+ * <td align="center">Converged but too dark w/o flash</td>
+ * </tr>
+ * <tr>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">ACAMERA_CONTROL_AE_LOCK is ON</td>
+ * <td align="center">LOCKED</td>
+ * <td align="center">Values locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Camera device initiates AE scan</td>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">Values changing</td>
+ * </tr>
+ * <tr>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">ACAMERA_CONTROL_AE_LOCK is ON</td>
+ * <td align="center">LOCKED</td>
+ * <td align="center">Values locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">FLASH_REQUIRED</td>
+ * <td align="center">Camera device initiates AE scan</td>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">Values changing</td>
+ * </tr>
+ * <tr>
+ * <td align="center">FLASH_REQUIRED</td>
+ * <td align="center">ACAMERA_CONTROL_AE_LOCK is ON</td>
+ * <td align="center">LOCKED</td>
+ * <td align="center">Values locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">LOCKED</td>
+ * <td align="center">ACAMERA_CONTROL_AE_LOCK is OFF</td>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">Values not good after unlock</td>
+ * </tr>
+ * <tr>
+ * <td align="center">LOCKED</td>
+ * <td align="center">ACAMERA_CONTROL_AE_LOCK is OFF</td>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Values good after unlock</td>
+ * </tr>
+ * <tr>
+ * <td align="center">LOCKED</td>
+ * <td align="center">ACAMERA_CONTROL_AE_LOCK is OFF</td>
+ * <td align="center">FLASH_REQUIRED</td>
+ * <td align="center">Exposure good, but too dark</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PRECAPTURE</td>
+ * <td align="center">Sequence done. ACAMERA_CONTROL_AE_LOCK is OFF</td>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Ready for high-quality capture</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PRECAPTURE</td>
+ * <td align="center">Sequence done. ACAMERA_CONTROL_AE_LOCK is ON</td>
+ * <td align="center">LOCKED</td>
+ * <td align="center">Ready for high-quality capture</td>
+ * </tr>
+ * <tr>
+ * <td align="center">LOCKED</td>
+ * <td align="center">aeLock is ON and aePrecaptureTrigger is START</td>
+ * <td align="center">LOCKED</td>
+ * <td align="center">Precapture trigger is ignored when AE is already locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">LOCKED</td>
+ * <td align="center">aeLock is ON and aePrecaptureTrigger is CANCEL</td>
+ * <td align="center">LOCKED</td>
+ * <td align="center">Precapture trigger is ignored when AE is already locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">Any state (excluding LOCKED)</td>
+ * <td align="center">ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START</td>
+ * <td align="center">PRECAPTURE</td>
+ * <td align="center">Start AE precapture metering sequence</td>
+ * </tr>
+ * <tr>
+ * <td align="center">Any state (excluding LOCKED)</td>
+ * <td align="center">ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Currently active precapture metering sequence is canceled</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ * <p>For the above table, the camera device may skip reporting any state changes that happen
+ * without application intervention (i.e. mode switch, trigger, locking). Any state that
+ * can be skipped in that manner is called a transient state.</p>
+ * <p>For example, for above AE modes (AE_MODE_ON_*), in addition to the state transitions
+ * listed in above table, it is also legal for the camera device to skip one or more
+ * transient states between two results. See below table for examples:</p>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Camera device finished AE scan</td>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Values are already good, transient states are skipped by camera device.</td>
+ * </tr>
+ * <tr>
+ * <td align="center">Any state (excluding LOCKED)</td>
+ * <td align="center">ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START, sequence done</td>
+ * <td align="center">FLASH_REQUIRED</td>
+ * <td align="center">Converged but too dark w/o flash after a precapture sequence, transient states are skipped by camera device.</td>
+ * </tr>
+ * <tr>
+ * <td align="center">Any state (excluding LOCKED)</td>
+ * <td align="center">ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START, sequence done</td>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Converged after a precapture sequence, transient states are skipped by camera device.</td>
+ * </tr>
+ * <tr>
+ * <td align="center">Any state (excluding LOCKED)</td>
+ * <td align="center">ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL, converged</td>
+ * <td align="center">FLASH_REQUIRED</td>
+ * <td align="center">Converged but too dark w/o flash after a precapture sequence is canceled, transient states are skipped by camera device.</td>
+ * </tr>
+ * <tr>
+ * <td align="center">Any state (excluding LOCKED)</td>
+ * <td align="center">ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL, converged</td>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Converged after a precapture sequenceis canceled, transient states are skipped by camera device.</td>
+ * </tr>
+ * <tr>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Camera device finished AE scan</td>
+ * <td align="center">FLASH_REQUIRED</td>
+ * <td align="center">Converged but too dark w/o flash after a new scan, transient states are skipped by camera device.</td>
+ * </tr>
+ * <tr>
+ * <td align="center">FLASH_REQUIRED</td>
+ * <td align="center">Camera device finished AE scan</td>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Converged after a new scan, transient states are skipped by camera device.</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ *
+ * @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>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center"></td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Never changes</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_AUTO or AF_MODE_MACRO:</p>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">ACTIVE_SCAN</td>
+ * <td align="center">Start AF sweep, Lens now moving</td>
+ * </tr>
+ * <tr>
+ * <td align="center">ACTIVE_SCAN</td>
+ * <td align="center">AF sweep done</td>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">Focused, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">ACTIVE_SCAN</td>
+ * <td align="center">AF sweep done</td>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">Not focused, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">ACTIVE_SCAN</td>
+ * <td align="center">AF_CANCEL</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Cancel/reset AF, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">AF_CANCEL</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Cancel/reset AF</td>
+ * </tr>
+ * <tr>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">ACTIVE_SCAN</td>
+ * <td align="center">Start new sweep, Lens now moving</td>
+ * </tr>
+ * <tr>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">AF_CANCEL</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Cancel/reset AF</td>
+ * </tr>
+ * <tr>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">ACTIVE_SCAN</td>
+ * <td align="center">Start new sweep, Lens now moving</td>
+ * </tr>
+ * <tr>
+ * <td align="center">Any state</td>
+ * <td align="center">Mode change</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center"></td>
+ * </tr>
+ * </tbody>
+ * </table>
+ * <p>For the above table, the camera device may skip reporting any state changes that happen
+ * without application intervention (i.e. mode switch, trigger, locking). Any state that
+ * can be skipped in that manner is called a transient state.</p>
+ * <p>For example, for these AF modes (AF_MODE_AUTO and AF_MODE_MACRO), in addition to the
+ * state transitions listed in above table, it is also legal for the camera device to skip
+ * one or more transient states between two results. See below table for examples:</p>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">Focus is already good or good after a scan, lens is now locked.</td>
+ * </tr>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">Focus failed after a scan, lens is now locked.</td>
+ * </tr>
+ * <tr>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">Focus is already good or good after a scan, lens is now locked.</td>
+ * </tr>
+ * <tr>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">Focus is good after a scan, lens is not locked.</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_CONTINUOUS_VIDEO:</p>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Camera device initiates new scan</td>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">Start AF scan, Lens now moving</td>
+ * </tr>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">AF state query, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">Camera device completes current scan</td>
+ * <td align="center">PASSIVE_FOCUSED</td>
+ * <td align="center">End AF scan, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">Camera device fails current scan</td>
+ * <td align="center">PASSIVE_UNFOCUSED</td>
+ * <td align="center">End AF scan, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">Immediate transition, if focus is good. Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">Immediate transition, if focus is bad. Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">AF_CANCEL</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Reset lens position, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_FOCUSED</td>
+ * <td align="center">Camera device initiates new scan</td>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">Start AF scan, Lens now moving</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_UNFOCUSED</td>
+ * <td align="center">Camera device initiates new scan</td>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">Start AF scan, Lens now moving</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_FOCUSED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">Immediate transition, lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_UNFOCUSED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">Immediate transition, lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">No effect</td>
+ * </tr>
+ * <tr>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">AF_CANCEL</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Restart AF scan</td>
+ * </tr>
+ * <tr>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">No effect</td>
+ * </tr>
+ * <tr>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">AF_CANCEL</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Restart AF scan</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_CONTINUOUS_PICTURE:</p>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Camera device initiates new scan</td>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">Start AF scan, Lens now moving</td>
+ * </tr>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">AF state query, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">Camera device completes current scan</td>
+ * <td align="center">PASSIVE_FOCUSED</td>
+ * <td align="center">End AF scan, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">Camera device fails current scan</td>
+ * <td align="center">PASSIVE_UNFOCUSED</td>
+ * <td align="center">End AF scan, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">Eventual transition once the focus is good. Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">Eventual transition if cannot find focus. Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">AF_CANCEL</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Reset lens position, Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_FOCUSED</td>
+ * <td align="center">Camera device initiates new scan</td>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">Start AF scan, Lens now moving</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_UNFOCUSED</td>
+ * <td align="center">Camera device initiates new scan</td>
+ * <td align="center">PASSIVE_SCAN</td>
+ * <td align="center">Start AF scan, Lens now moving</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_FOCUSED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">Immediate trans. Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">PASSIVE_UNFOCUSED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">Immediate trans. Lens now locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">No effect</td>
+ * </tr>
+ * <tr>
+ * <td align="center">FOCUSED_LOCKED</td>
+ * <td align="center">AF_CANCEL</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Restart AF scan</td>
+ * </tr>
+ * <tr>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">AF_TRIGGER</td>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">No effect</td>
+ * </tr>
+ * <tr>
+ * <td align="center">NOT_FOCUSED_LOCKED</td>
+ * <td align="center">AF_CANCEL</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Restart AF scan</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ * <p>When switch between AF_MODE_CONTINUOUS_* (CAF modes) and AF_MODE_AUTO/AF_MODE_MACRO
+ * (AUTO modes), the initial INACTIVE or PASSIVE_SCAN states may be skipped by the
+ * camera device. When a trigger is included in a mode switch request, the trigger
+ * will be evaluated in the context of the new mode in the request.
+ * See below table for examples:</p>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">any state</td>
+ * <td align="center">CAF-->AUTO mode switch</td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Mode switch without trigger, initial state must be INACTIVE</td>
+ * </tr>
+ * <tr>
+ * <td align="center">any state</td>
+ * <td align="center">CAF-->AUTO mode switch with AF_TRIGGER</td>
+ * <td align="center">trigger-reachable states from INACTIVE</td>
+ * <td align="center">Mode switch with trigger, INACTIVE is skipped</td>
+ * </tr>
+ * <tr>
+ * <td align="center">any state</td>
+ * <td align="center">AUTO-->CAF mode switch</td>
+ * <td align="center">passively reachable states from INACTIVE</td>
+ * <td align="center">Mode switch without trigger, passive transient state is skipped</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ *
+ * @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>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center"></td>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Camera device auto white balance algorithm is disabled</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ * <p>When ACAMERA_CONTROL_AWB_MODE is AWB_MODE_AUTO:</p>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Camera device initiates AWB scan</td>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">Values changing</td>
+ * </tr>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">ACAMERA_CONTROL_AWB_LOCK is ON</td>
+ * <td align="center">LOCKED</td>
+ * <td align="center">Values locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">Camera device finishes AWB scan</td>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Good values, not changing</td>
+ * </tr>
+ * <tr>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">ACAMERA_CONTROL_AWB_LOCK is ON</td>
+ * <td align="center">LOCKED</td>
+ * <td align="center">Values locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Camera device initiates AWB scan</td>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">Values changing</td>
+ * </tr>
+ * <tr>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">ACAMERA_CONTROL_AWB_LOCK is ON</td>
+ * <td align="center">LOCKED</td>
+ * <td align="center">Values locked</td>
+ * </tr>
+ * <tr>
+ * <td align="center">LOCKED</td>
+ * <td align="center">ACAMERA_CONTROL_AWB_LOCK is OFF</td>
+ * <td align="center">SEARCHING</td>
+ * <td align="center">Values not good after unlock</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ * <p>For the above table, the camera device may skip reporting any state changes that happen
+ * without application intervention (i.e. mode switch, trigger, locking). Any state that
+ * can be skipped in that manner is called a transient state.</p>
+ * <p>For example, for this AWB mode (AWB_MODE_AUTO), in addition to the state transitions
+ * listed in above table, it is also legal for the camera device to skip one or more
+ * transient states between two results. See below table for examples:</p>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">State</th>
+ * <th align="center">Transition Cause</th>
+ * <th align="center">New State</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">INACTIVE</td>
+ * <td align="center">Camera device finished AWB scan</td>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Values are already good, transient states are skipped by camera device.</td>
+ * </tr>
+ * <tr>
+ * <td align="center">LOCKED</td>
+ * <td align="center">ACAMERA_CONTROL_AWB_LOCK is OFF</td>
+ * <td align="center">CONVERGED</td>
+ * <td align="center">Values good after unlock, transient states are skipped by camera device.</td>
+ * </tr>
+ * </tbody>
+ * </table>
+ *
+ * @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,
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 {@link android.media.ExifInterface#TAG_ORIENTATION EXIF orientation flag}
+ * and keep jpeg and thumbnail image data unrotated.</li>
+ * <li>Rotate the jpeg and thumbnail image data and not set
+ * {@link android.media.ExifInterface#TAG_ORIENTATION EXIF orientation flag}. In this
+ * case, LIMITED or FULL hardware level devices will report rotated thumnail size in
+ * capture result, so the width and height will be interchanged if 90 or 270 degree
+ * orientation is requested. LEGACY device will always report unrotated thumbnail
+ * size.</li>
+ * </ul>
+ *
+ * @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 {@link
+ * android.hardware.SensorEvent Android sensor coordinate
+ * axes}. Note that only the axis definitions are shared with
+ * the sensor coordinate system, but not the origin.</p>
+ * <p>If this device is the largest or only camera device with a
+ * given facing, then this position will be <code>(0, 0, 0)</code>; a
+ * camera device with a lens optical center located 3 cm from
+ * the main sensor along the +X axis (to the right from the
+ * user's perspective) will report <code>(0.03, 0, 0)</code>.</p>
+ * <p>To transform a pixel coordinates between two cameras
+ * facing the same direction, first the source camera
+ * 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 android.graphics.ImageFormat#JPEG JPEG format}.</li>
+ * <li>Raw formats: {@link android.graphics.ImageFormat#RAW_SENSOR RAW_SENSOR}, {@link
+ * android.graphics.ImageFormat#RAW10 RAW10}, or {@link android.graphics.ImageFormat#RAW12
+ * RAW12}.</li>
+ * <li>Processed (but not-stalling): any non-RAW format without a stall duration.
+ * Typically {@link android.graphics.ImageFormat#YUV_420_888 YUV_420_888},
+ * {@link android.graphics.ImageFormat#NV21 NV21}, or
+ * {@link android.graphics.ImageFormat#YV12 YV12}.</li>
+ * </ul>
+ *
+ * @see ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
+ */
ACAMERA_REQUEST_MAX_NUM_OUTPUT_STREAMS = // int32[3]
ACAMERA_REQUEST_START + 6,
+ /**
+ * <p>The maximum numbers of any type of input 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>When set to 0, it means no input stream is supported.</p>
+ * <p>The image format for a input stream can be any supported format returned by {@link
+ * android.hardware.camera2.params.StreamConfigurationMap#getInputFormats}. When using an
+ * input stream, there must be at least one output stream configured to to receive the
+ * reprocessed images.</p>
+ * <p>When an input stream and some output streams are used in a reprocessing request,
+ * only the input buffer will be used to produce these output stream buffers, and a
+ * new sensor image will not be captured.</p>
+ * <p>For example, for Zero Shutter Lag (ZSL) still capture use case, the input
+ * stream image format will be PRIVATE, the associated output stream image format
+ * should be JPEG.</p>
+ */
ACAMERA_REQUEST_MAX_NUM_INPUT_STREAMS = // int32
ACAMERA_REQUEST_START + 8,
+ /**
+ * <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 android.hardware.camera2.CaptureRequest}.</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 use with {@link android.hardware.camera2.CaptureResult}.</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 use with {@link android.hardware.camera2.CameraCharacteristics}.</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 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>
+ * <table>
+ * <thead>
+ * <tr>
+ * <th align="center">Format</th>
+ * <th align="center">Size</th>
+ * <th align="center">Hardware Level</th>
+ * <th align="center">Notes</th>
+ * </tr>
+ * </thead>
+ * <tbody>
+ * <tr>
+ * <td align="center">JPEG</td>
+ * <td align="center">ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE</td>
+ * <td align="center">Any</td>
+ * <td align="center"></td>
+ * </tr>
+ * <tr>
+ * <td align="center">JPEG</td>
+ * <td align="center">1920x1080 (1080p)</td>
+ * <td align="center">Any</td>
+ * <td align="center">if 1080p <= activeArraySize</td>
+ * </tr>
+ * <tr>
+ * <td align="center">JPEG</td>
+ * <td align="center">1280x720 (720)</td>
+ * <td align="center">Any</td>
+ * <td align="center">if 720p <= activeArraySize</td>
+ * </tr>
+ * <tr>
+ * <td align="center">JPEG</td>
+ * <td align="center">640x480 (480p)</td>
+ * <td align="center">Any</td>
+ * <td align="center">if 480p <= activeArraySize</td>
+ * </tr>
+ * <tr>
+ * <td align="center">JPEG</td>
+ * <td align="center">320x240 (240p)</td>
+ * <td align="center">Any</td>
+ * <td align="center">if 240p <= activeArraySize</td>
+ * </tr>
+ * <tr>
+ * <td align="center">YUV_420_888</td>
+ * <td align="center">all output sizes available for JPEG</td>
+ * <td align="center">FULL</td>
+ * <td align="center"></td>
+ * </tr>
+ * <tr>
+ * <td align="center">YUV_420_888</td>
+ * <td align="center">all output sizes available for JPEG, up to the maximum video size</td>
+ * <td align="center">LIMITED</td>
+ * <td align="center"></td>
+ * </tr>
+ * <tr>
+ * <td align="center">IMPLEMENTATION_DEFINED</td>
+ * <td align="center">same as YUV_420_888</td>
+ * <td align="center">Any</td>
+ * <td align="center"></td>
+ * </tr>
+ * </tbody>
+ * </table>
+ * <p>Refer to 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>
+ * <p>(Keep in sync with
+ * {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration})</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 android.graphics.ImageFormat#JPEG}</li>
+ * <li>{@link android.graphics.ImageFormat#RAW_SENSOR}</li>
+ * </ul>
+ * <p>The following formats will never have a stall duration:</p>
+ * <ul>
+ * <li>{@link android.graphics.ImageFormat#YUV_420_888}</li>
+ * <li>{@link android.graphics.ImageFormat#RAW10}</li>
+ * </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>
+ * <p>(Keep up to date with
+ * {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration} )</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 the android.scaler.streamConfigurationMap field using
+ * {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration}.
+ * These are used to determine the maximum frame rate / minimum frame
+ * duration that is possible for a given stream configuration.</p>
+ * <p>Specifically, the application can use the following rules to
+ * determine the minimum frame duration it can request from the camera
+ * device:</p>
+ * <ol>
+ * <li>Let the set of currently configured input/output streams
+ * be called <code>S</code>.</li>
+ * <li>Find the minimum frame durations for each stream in <code>S</code>, by looking
+ * it up in android.scaler.streamConfigurationMap using {@link
+ * android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration}
+ * (with its respective size/format). Let this set of frame durations be
+ * called <code>F</code>.</li>
+ * <li>For any given request <code>R</code>, the minimum frame duration allowed
+ * for <code>R</code> is the maximum out of all values in <code>F</code>. Let the streams
+ * used in <code>R</code> be called <code>S_r</code>.</li>
+ * </ol>
+ * <p>If none of the streams in <code>S_r</code> have a stall time (listed in {@link
+ * android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration}
+ * using its respective size/format), then the frame duration in <code>F</code>
+ * determines the steady state frame rate that the application will get
+ * if it uses <code>R</code> as a repeating request. Let this special kind of
+ * request be called <code>Rsimple</code>.</p>
+ * <p>A repeating request <code>Rsimple</code> can be <em>occasionally</em> interleaved
+ * by a single capture of a new request <code>Rstall</code> (which has at least
+ * one in-use stream with a non-0 stall time) and if <code>Rstall</code> has the
+ * same minimum frame duration this will not cause a frame rate loss
+ * if all buffers from the previous <code>Rstall</code> have already been
+ * delivered.</p>
+ * <p>For more details about stalling, see
+ * {@link android.hardware.camera2.params.StreamConfigurationMap#getOutputStallDuration}.</p>
+ * <p>This control is only effective if 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 {@link
+ * android.os.SystemClock#elapsedRealtimeNanos}, and they can
+ * be compared to other timestamps from other subsystems that
+ * are using that base.</p>
+ * <p>For reprocessing, the timestamp will match the start of exposure of
+ * the input image, i.e. {@link CaptureResult#SENSOR_TIMESTAMP the
+ * timestamp} in the TotalCaptureResult that was used to create the
+ * reprocess capture request.</p>
+ *
+ * @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>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 android.hardware.camera2.CameraCharacteristics#getAvailableCaptureRequestKeys}.</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 android.hardware.camera2.CameraCharacteristics#getAvailableCaptureRequestKeys}.</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 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
+ * android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration}
+ * 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 android.scaler.streamConfigurationMap (this depends on
+ * whether or not the image sensor returns buffers containing pixels that are not
+ * part of the active array region for blacklevel calibration or other purposes).</p>
+ * <p>Some parts of the full pixel array may not receive light from the scene,
+ * or be otherwise inactive. The 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>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 ACAMERA_STATISTICS_LENS_SHADING_CORRECTION_MAP 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 ACAMERA_STATISTICS_LENS_SHADING_CORRECTION_MAP; 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_CORRECTION_MAP
+ * @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 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, for each
+ * Bayer color channel.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>The least shaded section of the image should have a gain factor
+ * of 1; all other sections should have gains above 1.</p>
+ * <p>When ACAMERA_COLOR_CORRECTION_MODE = TRANSFORM_MATRIX, the map
+ * must take into account the colorCorrection settings.</p>
+ * <p>The shading map is for the entire active pixel array, and is not
+ * affected by the crop region specified in the request. Each shading map
+ * entry is the value of the shading compensation map over a specific
+ * pixel on the sensor. Specifically, with a (N x M) resolution shading
+ * map, and an active pixel array size (W x H), shading map entry
+ * (x,y) ϵ (0 ... N-1, 0 ... M-1) is the value of the shading map at
+ * pixel ( ((W-1)/(N-1)) * x, ((H-1)/(M-1)) * y) for the four color channels.
+ * The map is assumed to be bilinearly interpolated between the sample points.</p>
+ * <p>The channel order is [R, Geven, Godd, B], where Geven is the green
+ * channel for the even rows of a Bayer pattern, and Godd is the odd rows.
+ * The shading map is stored in a fully interleaved format.</p>
+ * <p>The shading map should have on the order of 30-40 rows and columns,
+ * and must be smaller than 64x64.</p>
+ * <p>As an example, given a very small map defined as:</p>
+ * <pre><code>width,height = [ 4, 3 ]
+ * values =
+ * [ 1.3, 1.2, 1.15, 1.2, 1.2, 1.2, 1.15, 1.2,
+ * 1.1, 1.2, 1.2, 1.2, 1.3, 1.2, 1.3, 1.3,
+ * 1.2, 1.2, 1.25, 1.1, 1.1, 1.1, 1.1, 1.0,
+ * 1.0, 1.0, 1.0, 1.0, 1.2, 1.3, 1.25, 1.2,
+ * 1.3, 1.2, 1.2, 1.3, 1.2, 1.15, 1.1, 1.2,
+ * 1.2, 1.1, 1.0, 1.2, 1.3, 1.15, 1.2, 1.3 ]
+ * </code></pre>
+ * <p>The low-resolution scaling map images for each channel are
+ * (displayed using nearest-neighbor interpolation):</p>
+ * <p><img alt="Red lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/red_shading.png" />
+ * <img alt="Green (even rows) lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/green_e_shading.png" />
+ * <img alt="Green (odd rows) lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/green_o_shading.png" />
+ * <img alt="Blue lens shading map" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/blue_shading.png" /></p>
+ * <p>As a visualization only, inverting the full-color map to recover an
+ * image of a gray wall (using bicubic interpolation for visual quality) as captured by the sensor gives:</p>
+ * <p><img alt="Image of a uniform white wall (inverse shading map)" src="../../../../images/camera2/metadata/android.statistics.lensShadingMap/inv_shading.png" /></p>
+ *
+ * @see ACAMERA_COLOR_CORRECTION_MODE
+ */
ACAMERA_STATISTICS_LENS_SHADING_CORRECTION_MAP = // byte
ACAMERA_STATISTICS_START + 10,
+ /**
+ * <p>The shading map is a low-resolution floating-point map
+ * that lists the coefficients used to correct for vignetting, for each
+ * Bayer color channel of RAW image data.</p>
+ *
+ * <p>This tag may appear in:</p>
+ * <ul>
+ * <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+ * </ul>
+ *
+ * <p>The least shaded section of the image should have a gain factor
+ * of 1; all other sections should have gains above 1.</p>
+ * <p>When ACAMERA_COLOR_CORRECTION_MODE = TRANSFORM_MATRIX, the map
+ * must take into account the colorCorrection settings.</p>
+ * <p>The shading map is for the entire active pixel array, and is not
+ * affected by the crop region specified in the request. Each shading map
+ * entry is the value of the shading compensation map over a specific
+ * pixel on the sensor. Specifically, with a (N x M) resolution shading
+ * map, and an active pixel array size (W x H), shading map entry
+ * (x,y) ϵ (0 ... N-1, 0 ... M-1) is the value of the shading map at
+ * pixel ( ((W-1)/(N-1)) * x, ((H-1)/(M-1)) * y) for the four color channels.
+ * The map is assumed to be bilinearly interpolated between the sample points.</p>
+ * <p>The channel order is [R, Geven, Godd, B], where Geven is the green
+ * channel for the even rows of a Bayer pattern, and Godd is the odd rows.
+ * The shading map is stored in a fully interleaved format, and its size
+ * is provided in the camera static metadata by ACAMERA_LENS_INFO_SHADING_MAP_SIZE.</p>
+ * <p>The shading map should have on the order of 30-40 rows and columns,
+ * and must be smaller than 64x64.</p>
+ * <p>As an example, given a very small map defined as:</p>
+ * <pre><code>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 {@link android.hardware.camera2.CameraCharacteristics} entries.</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>
+ * <p>(Keep in sync with {@link
+ * android.hardware.camera2.params.StreamConfigurationMap#getOutputMinFrameDuration})</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,
@@ -474,7 +5345,7 @@
// 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
@@ -489,7 +5360,7 @@
*/
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
@@ -502,7 +5373,7 @@
*/
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>
@@ -520,18 +5391,18 @@
// 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>
*/
@@ -542,26 +5413,26 @@
// 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
@@ -573,13 +5444,13 @@
// 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>
@@ -596,7 +5467,7 @@
// 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
@@ -624,7 +5495,7 @@
*/
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
@@ -640,7 +5511,7 @@
*/
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>
@@ -655,7 +5526,7 @@
*/
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>
@@ -670,7 +5541,7 @@
*/
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
@@ -683,12 +5554,12 @@
// 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
@@ -696,7 +5567,7 @@
*/
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>
@@ -707,7 +5578,7 @@
// 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>
@@ -716,7 +5587,7 @@
*/
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
@@ -732,7 +5603,7 @@
*/
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
@@ -748,7 +5619,7 @@
*/
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>
@@ -769,7 +5640,7 @@
*/
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>
@@ -789,7 +5660,7 @@
*/
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
@@ -803,17 +5674,17 @@
// 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>
*/
@@ -823,14 +5694,14 @@
// 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>
@@ -841,7 +5712,7 @@
// 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
@@ -853,7 +5724,7 @@
*/
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.
@@ -866,7 +5737,7 @@
*/
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>
@@ -884,7 +5755,7 @@
*/
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>
@@ -902,7 +5773,7 @@
*/
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>
@@ -920,7 +5791,7 @@
*/
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>
@@ -938,7 +5809,7 @@
*/
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>
@@ -953,7 +5824,7 @@
*/
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>
@@ -968,7 +5839,7 @@
*/
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>
@@ -987,34 +5858,34 @@
// 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
@@ -1023,7 +5894,7 @@
*/
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
@@ -1031,7 +5902,7 @@
*/
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
@@ -1046,57 +5917,57 @@
// 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,
@@ -1105,7 +5976,7 @@
// 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
@@ -1123,7 +5994,7 @@
*/
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
@@ -1131,7 +6002,7 @@
*/
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
@@ -1145,7 +6016,7 @@
*/
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>
@@ -1161,12 +6032,12 @@
// 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>
@@ -1185,91 +6056,91 @@
*/
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>This is deprecated, please use {@link
* android.hardware.camera2.CameraDevice#createConstrainedHighSpeedCaptureSession}
* and {@link
@@ -1354,7 +6225,7 @@
*/
ACAMERA_CONTROL_SCENE_MODE_HIGH_SPEED_VIDEO = 17,
- /*
+ /**
* <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
@@ -1405,12 +6276,12 @@
// 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,
@@ -1419,7 +6290,7 @@
// 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
@@ -1427,7 +6298,7 @@
*/
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
@@ -1435,25 +6306,25 @@
*/
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
@@ -1474,7 +6345,7 @@
// 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
@@ -1484,7 +6355,7 @@
*/
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
@@ -1493,7 +6364,7 @@
*/
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
@@ -1502,7 +6373,7 @@
*/
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
@@ -1511,7 +6382,7 @@
*/
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
@@ -1524,7 +6395,7 @@
*/
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
@@ -1537,7 +6408,7 @@
*/
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
@@ -1551,7 +6422,7 @@
// 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
@@ -1560,7 +6431,7 @@
*/
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
@@ -1568,13 +6439,13 @@
*/
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,
@@ -1601,24 +6472,24 @@
// 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
* android.hardware.camera2.CameraDevice#createCaptureSession}) or below have
@@ -1648,18 +6519,18 @@
// 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,
@@ -1668,27 +6539,27 @@
// 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
@@ -1710,7 +6581,7 @@
// 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>
@@ -1720,7 +6591,7 @@
*/
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>
@@ -1729,7 +6600,7 @@
*/
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>
@@ -1744,12 +6615,12 @@
// 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,
@@ -1758,17 +6629,17 @@
// 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>
*/
@@ -1778,7 +6649,7 @@
// 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>
*
@@ -1789,7 +6660,7 @@
*/
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
@@ -1807,7 +6678,7 @@
// 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
@@ -1822,7 +6693,7 @@
*/
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
@@ -1832,7 +6703,7 @@
*/
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
@@ -1848,31 +6719,31 @@
// 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
* android.hardware.camera2.CameraDevice#createCaptureSession}) or below have noise
@@ -1904,7 +6775,7 @@
// 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>
@@ -1920,7 +6791,7 @@
*/
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
@@ -1979,7 +6850,7 @@
*/
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>
@@ -2039,7 +6910,7 @@
*/
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
@@ -2060,7 +6931,7 @@
*/
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>
@@ -2091,7 +6962,7 @@
*/
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
@@ -2129,7 +7000,7 @@
*/
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>
@@ -2182,12 +7053,12 @@
// 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,
@@ -2201,7 +7072,7 @@
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT = 2,
- /*
+ /**
* <p>Incandescent light</p>
*/
ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN = 3,
@@ -2214,22 +7085,22 @@
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,
@@ -2254,14 +7125,14 @@
// 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>
@@ -2278,7 +7149,7 @@
*/
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>
@@ -2314,7 +7185,7 @@
*/
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>
@@ -2331,7 +7202,7 @@
*/
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>
@@ -2341,7 +7212,7 @@
*/
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>
@@ -2363,7 +7234,7 @@
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>
@@ -2374,7 +7245,7 @@
// 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
@@ -2386,7 +7257,7 @@
*/
ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN = 0,
- /*
+ /**
* <p>Timestamps from ACAMERA_SENSOR_TIMESTAMP are in the same timebase as
* {@link android.os.SystemClock#elapsedRealtimeNanos},
* and they can be compared to other timestamps using that base.</p>
@@ -2408,18 +7279,18 @@
// 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>
*/
@@ -2430,18 +7301,18 @@
// 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>
@@ -2452,12 +7323,12 @@
// 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,
@@ -2466,19 +7337,19 @@
// 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>
*/
@@ -2488,12 +7359,12 @@
// 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,
@@ -2504,7 +7375,7 @@
// 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
@@ -2515,19 +7386,19 @@
*/
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
@@ -2538,7 +7409,7 @@
*/
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
@@ -2554,12 +7425,12 @@
// 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,
@@ -2570,7 +7441,7 @@
// 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
@@ -2598,7 +7469,7 @@
*/
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 android.hardware.camera2.CameraDevice#createCaptureSession
@@ -2627,7 +7498,7 @@
*/
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
* android.hardware.camera2.CameraDevice#createCaptureSession createCaptureSession}
@@ -2648,7 +7519,7 @@
*/
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
@@ -2681,7 +7552,7 @@
// 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
@@ -2695,7 +7566,7 @@
*/
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
@@ -2714,7 +7585,7 @@
// 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
@@ -2723,7 +7594,7 @@
*/
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