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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-02-14 17:02:18 +0200
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-03-06 18:10:22 +0200
commiteaa1297df0bc4c6620ccde171dc9dc088109e35e (patch)
tree37a0d6d8495dd3b44468edc564a0c40a3b92cd86 /src/qcam/assets/feathericons/gift.svg
parent300f6e44345f5cb7bfe9aece6c6c5b5c0894487b (diff)
libcamera: controls: Move ControlValue get() and set() to controls.h
To avoid defining all specializations of ControlValue::get() and ControlValue::set() manually, move the definition of those functions to controls.h and turn them into single template functions. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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generated by cgit v1.2.1 (git 2.18.0) at 2024-12-29 19:08:34 +0000
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# SPDX-License-Identifier: LGPL-2.1-or-later
#
# Copyright (C) 2019, Google Inc.
#
%YAML 1.2
---
# Unless otherwise stated, all controls are bi-directional, i.e. they can be
# set through Request::controls() and returned out through Request::metadata().
controls:
  - AeEnable:
      type: bool
      description: |
        Enable or disable the AE.

        \sa ExposureTime AnalogueGain

  - AeLocked:
      type: bool
      description: |
        Report the lock status of a running AE algorithm.

        If the AE algorithm is locked the value shall be set to true, if it's
        converging it shall be set to false. If the AE algorithm is not
        running the control shall not be present in the metadata control list.

        \sa AeEnable

  # AeMeteringMode needs further attention:
  # - Auto-generate max enum value.
  # - Better handling of custom types.
  - AeMeteringMode:
      type: int32_t
      description: |
        Specify a metering mode for the AE algorithm to use. The metering
        modes determine which parts of the image are used to determine the
        scene brightness. Metering modes may be platform specific and not
        all metering modes may be supported.
      enum:
        - name: MeteringCentreWeighted
          value: 0
          description: Centre-weighted metering mode.
        - name: MeteringSpot
          value: 1
          description: Spot metering mode.
        - name: MeteringMatrix
          value: 2
          description: Matrix metering mode.
        - name: MeteringCustom
          value: 3
          description: Custom metering mode.

  # AeConstraintMode needs further attention:
  # - Auto-generate max enum value.
  # - Better handling of custom types.
  - AeConstraintMode:
      type: int32_t
      description: |
        Specify a constraint mode for the AE algorithm to use. These determine
        how the measured scene brightness is adjusted to reach the desired
        target exposure. Constraint modes may be platform specific, and not
        all constraint modes may be supported.
      enum:
        - name: ConstraintNormal
          value: 0
          description: Default constraint mode.
            This mode aims to balance the exposure of different parts of the
            image so as to reach a reasonable average level. However, highlights
            in the image may appear over-exposed and lowlights may appear
            under-exposed.
        - name: ConstraintHighlight
          value: 1
          description: Highlight constraint mode.
            This mode adjusts the exposure levels in order to try and avoid
            over-exposing the brightest parts (highlights) of an image.
            Other non-highlight parts of the image may appear under-exposed.
        - name: ConstraintShadows
          value: 2
          description: Shadows constraint mode.
            This mode adjusts the exposure levels in order to try and avoid
            under-exposing the dark parts (shadows) of an image. Other normally
            exposed parts of the image may appear over-exposed.
        - name: ConstraintCustom
          value: 3
          description: Custom constraint mode.

  # AeExposureMode needs further attention:
  # - Auto-generate max enum value.
  # - Better handling of custom types.
  - AeExposureMode:
      type: int32_t
      description: |
        Specify an exposure mode for the AE algorithm to use. These specify
        how the desired total exposure is divided between the shutter time
        and the sensor's analogue gain. The exposure modes are platform
        specific, and not all exposure modes may be supported.
      enum:
        - name: ExposureNormal
          value: 0
          description: Default exposure mode.
        - name: ExposureShort
          value: 1
          description: Exposure mode allowing only short exposure times.
        - name: ExposureLong
          value: 2
          description: Exposure mode allowing long exposure times.
        - name: ExposureCustom
          value: 3
          description: Custom exposure mode.

  - ExposureValue:
      type: float
      description: |
        Specify an Exposure Value (EV) parameter. The EV parameter will only be
        applied if the AE algorithm is currently enabled.

        By convention EV adjusts the exposure as log2. For example
        EV = [-2, -1, 0.5, 0, 0.5, 1, 2] results in an exposure adjustment
        of [1/4x, 1/2x, 1/sqrt(2)x, 1x, sqrt(2)x, 2x, 4x].

        \sa AeEnable

  - ExposureTime:
      type: int32_t
      description: |
        Exposure time (shutter speed) for the frame applied in the sensor
        device. This value is specified in micro-seconds.

        Setting this value means that it is now fixed and the AE algorithm may
        not change it. Setting it back to zero returns it to the control of the
        AE algorithm.

        \sa AnalogueGain AeEnable

        \todo Document the interactions between AeEnable and setting a fixed
        value for this control. Consider interactions with other AE features,
        such as aperture and aperture/shutter priority mode, and decide if
        control of which features should be automatically adjusted shouldn't
        better be handled through a separate AE mode control.

  - AnalogueGain:
      type: float
      description: |
        Analogue gain value applied in the sensor device.
        The value of the control specifies the gain multiplier applied to all
        colour channels. This value cannot be lower than 1.0.

        Setting this value means that it is now fixed and the AE algorithm may
        not change it. Setting it back to zero returns it to the control of the
        AE algorithm.

        \sa ExposureTime AeEnable

        \todo Document the interactions between AeEnable and setting a fixed
        value for this control. Consider interactions with other AE features,
        such as aperture and aperture/shutter priority mode, and decide if
        control of which features should be automatically adjusted shouldn't
        better be handled through a separate AE mode control.

  - Brightness:
      type: float
      description: |
        Specify a fixed brightness parameter. Positive values (up to 1.0)
        produce brighter images; negative values (up to -1.0) produce darker
        images and 0.0 leaves pixels unchanged.

  - Contrast:
      type: float
      description:  |
        Specify a fixed contrast parameter. Normal contrast is given by the
        value 1.0; larger values produce images with more contrast.

  - Lux:
      type: float
      description: |
        Report an estimate of the current illuminance level in lux. The Lux
        control can only be returned in metadata.

  - AwbEnable:
      type: bool
      description: |
        Enable or disable the AWB.

        \sa ColourGains

  # AwbMode needs further attention:
  # - Auto-generate max enum value.
  # - Better handling of custom types.
  - AwbMode:
      type: int32_t
      description: |
        Specify the range of illuminants to use for the AWB algorithm. The modes
        supported are platform specific, and not all modes may be supported.
      enum:
        - name: AwbAuto
          value: 0
          description: Search over the whole colour temperature range.
        - name: AwbIncandescent
          value: 1
          description: Incandescent AWB lamp mode.
        - name: AwbTungsten
          value: 2
          description: Tungsten AWB lamp mode.
        - name: AwbFluorescent
          value: 3
          description: Fluorescent AWB lamp mode.
        - name: AwbIndoor
          value: 4
          description: Indoor AWB lighting mode.
        - name: AwbDaylight
          value: 5
          description: Daylight AWB lighting mode.
        - name: AwbCloudy
          value: 6
          description: Cloudy AWB lighting mode.
        - name: AwbCustom
          value: 7
          description: Custom AWB mode.

  - AwbLocked:
      type: bool
      description: |
        Report the lock status of a running AWB algorithm.

        If the AWB algorithm is locked the value shall be set to true, if it's
        converging it shall be set to false. If the AWB algorithm is not
        running the control shall not be present in the metadata control list.

        \sa AwbEnable

  - ColourGains:
      type: float
      description: |
        Pair of gain values for the Red and Blue colour channels, in that
        order. ColourGains can only be applied in a Request when the AWB is
        disabled.

        \sa AwbEnable
      size: [2]

  - ColourTemperature:
      type: int32_t
      description: Report the current estimate of the colour temperature, in
        kelvin, for this frame. The ColourTemperature control can only be
        returned in metadata.

  - Saturation:
      type: float
      description:  |
        Specify a fixed saturation parameter. Normal saturation is given by
        the value 1.0; larger values produce more saturated colours; 0.0
        produces a greyscale image.

  - SensorBlackLevels:
      type: int32_t
      description: |
        Reports the sensor black levels used for processing a frame, in the
        order R, Gr, Gb, B. These values are returned as numbers out of a 16-bit
        pixel range (as if pixels ranged from 0 to 65535). The SensorBlackLevels
        control can only be returned in metadata.
      size: [4]

  - Sharpness:
      type: float
      description:  |
        A value of 0.0 means no sharpening. The minimum value means
        minimal sharpening, and shall be 0.0 unless the camera can't
        disable sharpening completely. The default value shall give a
        "reasonable" level of sharpening, suitable for most use cases.
        The maximum value may apply extremely high levels of sharpening,
        higher than anyone could reasonably want. Negative values are
        not allowed. Note also that sharpening is not applied to raw
        streams.

  - FocusFoM:
      type: int32_t
      description: |
        Reports a Figure of Merit (FoM) to indicate how in-focus the frame is.
        A larger FocusFoM value indicates a more in-focus frame. This control
        depends on the IPA to gather ISP statistics from the defined focus
        region, and combine them in a suitable way to generate a FocusFoM value.
        In this respect, it is not necessarily aimed at providing a way to
        implement a focus algorithm by the application, rather an indication of
        how in-focus a frame is.

  - ColourCorrectionMatrix:
      type: float
      description: |
        The 3x3 matrix that converts camera RGB to sRGB within the
        imaging pipeline. This should describe the matrix that is used
        after pixels have been white-balanced, but before any gamma
        transformation. The 3x3 matrix is stored in conventional reading
        order in an array of 9 floating point values.

      size: [3x3]

  - ScalerCrop:
      type: Rectangle
      description: |
        Sets the image portion that will be scaled to form the whole of
        the final output image. The (x,y) location of this rectangle is
        relative to the PixelArrayActiveAreas that is being used. The units
        remain native sensor pixels, even if the sensor is being used in
        a binning or skipping mode.

        This control is only present when the pipeline supports scaling. Its
        maximum valid value is given by the properties::ScalerCropMaximum
        property, and the two can be used to implement digital zoom.

  - DigitalGain:
      type: float
      description: |
        Digital gain value applied during the processing steps applied
        to the image as captured from the sensor.

        The global digital gain factor is applied to all the colour channels
        of the RAW image. Different pipeline models are free to
        specify how the global gain factor applies to each separate
        channel.

        If an imaging pipeline applies digital gain in distinct
        processing steps, this value indicates their total sum.
        Pipelines are free to decide how to adjust each processing
        step to respect the received gain factor and shall report
        their total value in the request metadata.

  - FrameDuration:
      type: int64_t
      description: |
        The instantaneous frame duration from start of frame exposure to start
        of next exposure, expressed in microseconds. This control is meant to
        be returned in metadata.

  - FrameDurationLimits:
      type: int64_t
      description: |
        The minimum and maximum (in that order) frame duration,
        expressed in microseconds.

        When provided by applications, the control specifies the sensor frame
        duration interval the pipeline has to use. This limits the largest
        exposure time the sensor can use. For example, if a maximum frame
        duration of 33ms is requested (corresponding to 30 frames per second),
        the sensor will not be able to raise the exposure time above 33ms.
        A fixed frame duration is achieved by setting the minimum and maximum
        values to be the same. Setting both values to 0 reverts to using the
        IPA provided defaults.

        The maximum frame duration provides the absolute limit to the shutter
        speed computed by the AE algorithm and it overrides any exposure mode
        setting specified with controls::AeExposureMode. Similarly, when a
        manual exposure time is set through controls::ExposureTime, it also
        gets clipped to the limits set by this control. When reported in
        metadata, the control expresses the minimum and maximum frame
        durations used after being clipped to the sensor provided frame
        duration limits.

        \sa AeExposureMode
        \sa ExposureTime

        \todo Define how to calculate the capture frame rate by
        defining controls to report additional delays introduced by
        the capture pipeline or post-processing stages (ie JPEG
        conversion, frame scaling).

        \todo Provide an explicit definition of default control values, for
        this and all other controls.

      size: [2]

  - SensorTimestamp:
      type: int64_t
      description: |
        The time when the first row of the image sensor active array is exposed.

        The timestamp, expressed in nanoseconds, represents a monotonically
        increasing counter since the system boot time, as defined by the
        Linux-specific CLOCK_BOOTTIME clock id.

        The SensorTimestamp control can only be returned in metadata.

        \todo Define how the sensor timestamp has to be used in the reprocessing
        use case.

  # ----------------------------------------------------------------------------
  # Draft controls section

  - AePrecaptureTrigger:
      type: int32_t
      draft: true
      description: |
        Control for AE metering trigger. Currently identical to
        ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER.

        Whether the camera device will trigger a precapture metering sequence
        when it processes this request.
      enum:
        - name: AePrecaptureTriggerIdle
          value: 0
          description: The trigger is idle.
        - name: AePrecaptureTriggerStart
          value: 1
          description: The pre-capture AE metering is started by the camera.
        - name: AePrecaptureTriggerCancel
          value: 2
          description: |
            The camera will cancel any active or completed metering sequence.
            The AE algorithm is reset to its initial state.

  - AfTrigger:
      type: int32_t
      draft: true
      description: |
       Control for AF trigger. Currently identical to
       ANDROID_CONTROL_AF_TRIGGER.

        Whether the camera device will trigger autofocus for this request.
      enum:
        - name: AfTriggerIdle
          value: 0
          description: The trigger is idle.
        - name: AfTriggerStart
          value: 1
          description: The AF routine is started by the camera.
        - name: AfTriggerCancel
          value: 2
          description: |
            The camera will cancel any active trigger and the AF routine is
            reset to its initial state.

  - NoiseReductionMode:
      type: int32_t
      draft: true
      description: |
       Control to select the noise reduction algorithm mode. Currently
       identical to ANDROID_NOISE_REDUCTION_MODE.

        Mode of operation for the noise reduction algorithm.
      enum:
        - name: NoiseReductionModeOff
          value: 0
          description: No noise reduction is applied
        - name: NoiseReductionModeFast
          value: 1
          description: |
            Noise reduction is applied without reducing the frame rate.
        - name: NoiseReductionModeHighQuality
          value: 2
          description: |
            High quality noise reduction at the expense of frame rate.
        - name: NoiseReductionModeMinimal
          value: 3
          description: |
            Minimal noise reduction is applied without reducing the frame rate.
        - name: NoiseReductionModeZSL
          value: 4
          description: |
            Noise reduction is applied at different levels to different streams.

  - ColorCorrectionAberrationMode:
      type: int32_t
      draft: true
      description: |
       Control to select the color correction aberration mode. Currently
       identical to ANDROID_COLOR_CORRECTION_ABERRATION_MODE.

        Mode of operation for the chromatic aberration correction algorithm.
      enum:
        - name: ColorCorrectionAberrationOff
          value: 0
          description: No aberration correction is applied.
        - name: ColorCorrectionAberrationFast
          value: 1
          description: Aberration correction will not slow down the frame rate.
        - name: ColorCorrectionAberrationHighQuality
          value: 2
          description: |
            High quality aberration correction which might reduce the frame
            rate.

  - AeState:
      type: int32_t
      draft: true
      description: |
       Control to report the current AE algorithm state. Currently identical to
       ANDROID_CONTROL_AE_STATE.

        Current state of the AE algorithm.
      enum:
        - name: AeStateInactive
          value: 0
          description: The AE algorithm is inactive.
        - name: AeStateSearching
          value: 1
          description: The AE algorithm has not converged yet.
        - name: AeStateConverged
          value: 2
          description: The AE algorithm has converged.
        - name: AeStateLocked
          value: 3
          description: The AE algorithm is locked.
        - name: AeStateFlashRequired
          value: 4
          description: The AE algorithm would need a flash for good results
        - name: AeStatePrecapture
          value: 5
          description: |
            The AE algorithm has started a pre-capture metering session.
            \sa AePrecaptureTrigger

  - AfState:
      type: int32_t
      draft: true
      description: |
       Control to report the current AF algorithm state. Currently identical to
       ANDROID_CONTROL_AF_STATE.

        Current state of the AF algorithm.
      enum:
        - name: AfStateInactive
          value: 0
          description: The AF algorithm is inactive.
        - name: AfStatePassiveScan
          value: 1
          description: |
            AF is performing a passive scan of the scene in continuous
            auto-focus mode.
        - name: AfStatePassiveFocused
          value: 2
          description: |
            AF believes the scene is in focus, but might restart scanning.
        - name: AfStateActiveScan
          value: 3
          description: |
            AF is performing a scan triggered by an AF trigger request.
            \sa AfTrigger
        - name: AfStateFocusedLock
          value: 4
          description: |
            AF believes has focused correctly and has locked focus.
        - name: AfStateNotFocusedLock
          value: 5
          description: |
            AF has not been able to focus and has locked.
        - name: AfStatePassiveUnfocused
          value: 6
          description: |
            AF has completed a passive scan without finding focus.

  - AwbState:
      type: int32_t
      draft: true
      description: |
       Control to report the current AWB algorithm state. Currently identical
       to ANDROID_CONTROL_AWB_STATE.

        Current state of the AWB algorithm.
      enum:
        - name: AwbStateInactive
          value: 0
          description: The AWB algorithm is inactive.
        - name: AwbStateSearching
          value: 1
          description: The AWB algorithm has not converged yet.
        - name: AwbConverged
          value: 2
          description: The AWB algorithm has converged.
        - name: AwbLocked
          value: 3
          description: The AWB algorithm is locked.

  - SensorRollingShutterSkew:
      type: int64_t
      draft: true
      description: |
       Control to report the time between the start of exposure of the first
       row and the start of exposure of the last row. Currently identical to
       ANDROID_SENSOR_ROLLING_SHUTTER_SKEW

  - LensShadingMapMode:
      type: int32_t
      draft: true
      description: |
       Control to report if the lens shading map is available. Currently
       identical to ANDROID_STATISTICS_LENS_SHADING_MAP_MODE.
      enum:
        - name: LensShadingMapModeOff
          value: 0
          description: No lens shading map mode is available.
        - name: LensShadingMapModeOn
          value: 1
          description: The lens shading map mode is available.

  - SceneFlicker:
      type: int32_t
      draft: true
      description: |
       Control to report the detected scene light frequency. Currently
       identical to ANDROID_STATISTICS_SCENE_FLICKER.
      enum:
        - name: SceneFickerOff
          value: 0
          description: No flickering detected.
        - name: SceneFicker50Hz
          value: 1
          description: 50Hz flickering detected.
        - name: SceneFicker60Hz
          value: 2
          description: 60Hz flickering detected.

  - PipelineDepth:
      type: int32_t
      draft: true
      description: |
        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. Always less than or equal to PipelineMaxDepth. Currently
        identical to ANDROID_REQUEST_PIPELINE_DEPTH.

        The typical value for this control is 3 as a frame is first exposed,
        captured and then processed in a single pass through the ISP. Any
        additional processing step performed after the ISP pass (in example face
        detection, additional format conversions etc) count as an additional
        pipeline stage.

  - MaxLatency:
      type: int32_t
      draft: true
      description: |
        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. A value of -1 indicates unknown latency, and 0
        indicates per-frame control. Currently identical to
        ANDROID_SYNC_MAX_LATENCY.

  - TestPatternMode:
      type: int32_t
      draft: true
      description: |
        Control to select the test pattern mode. Currently identical to
        ANDROID_SENSOR_TEST_PATTERN_MODE.
      enum:
        - name: TestPatternModeOff
          value: 0
          description: |
            No test pattern mode is used. The camera device returns frames from
            the image sensor.
        - name: TestPatternModeSolidColor
          value: 1
          description: |
            Each pixel in [R, G_even, G_odd, B] is replaced by its respective
            color channel provided in test pattern data.
            \todo Add control for test pattern data.
        - name: TestPatternModeColorBars
          value: 2
          description: |
            All pixel data is replaced with an 8-bar color pattern. The vertical
            bars (left-to-right) are as follows; white, yellow, cyan, green,
            magenta, red, blue and black. Each bar should take up 1/8 of the
            sensor pixel array width. When this is not possible, the bar size
            should be rounded down to the nearest integer and the pattern can
            repeat on the right side. Each bar's height must always take up the
            full sensor pixel array height.
        - name: TestPatternModeColorBarsFadeToGray
          value: 3
          description: |
            The test pattern is similar to TestPatternModeColorBars,
            except that each bar should start at its specified color at the top
            and fade to gray at the bottom. Furthermore each bar is further
            subdevided into a left and right half. The left half should have a