libcamera: libcamera::controls::draft Namespace Reference

libcamera v0.3.2 Supporting cameras in Linux since 2019

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Enumerations | Variables
libcamera::controls::draft Namespace Reference

Namespace for draft controls. More...

## Enumerations
enum | AePrecaptureTriggerEnum { AePrecaptureTriggerIdle = 0 , AePrecaptureTriggerStart = 1 , AePrecaptureTriggerCancel = 2 }
| Supported AePrecaptureTrigger values. More...
enum | NoiseReductionModeEnum { NoiseReductionModeOff = 0 , NoiseReductionModeFast = 1 , NoiseReductionModeHighQuality = 2 , NoiseReductionModeMinimal = 3 , NoiseReductionModeZSL = 4 }
| Supported NoiseReductionMode values. More...
enum | ColorCorrectionAberrationModeEnum { ColorCorrectionAberrationOff = 0 , ColorCorrectionAberrationFast = 1 , ColorCorrectionAberrationHighQuality = 2 }
| Supported ColorCorrectionAberrationMode values. More...
enum | AeStateEnum { AeStateInactive = 0 , AeStateSearching = 1 , AeStateConverged = 2 , AeStateLocked = 3 , AeStateFlashRequired = 4 , AeStatePrecapture = 5 }
| Supported AeState values. More...
enum | AwbStateEnum { AwbStateInactive = 0 , AwbStateSearching = 1 , AwbConverged = 2 , AwbLocked = 3 }
| Supported AwbState values. More...
enum | LensShadingMapModeEnum { LensShadingMapModeOff = 0 , LensShadingMapModeOn = 1 }
| Supported LensShadingMapMode values. More...
enum | TestPatternModeEnum { TestPatternModeOff = 0 , TestPatternModeSolidColor = 1 , TestPatternModeColorBars = 2 , TestPatternModeColorBarsFadeToGray = 3 , TestPatternModePn9 = 4 , TestPatternModeCustom1 = 256 }
| Supported TestPatternMode values. More...

## Variables
const std::array< const ControlValue, 3 > | AePrecaptureTriggerValues
| List of all AePrecaptureTrigger supported values.
const std::map< std::string, int32_t > | AePrecaptureTriggerNameValueMap
| Map of all AePrecaptureTrigger supported value names (in std::string format) to value.
const Control< int32_t > | AePrecaptureTrigger
| Control for AE metering trigger. Currently identical to ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER.
const std::array< const ControlValue, 5 > | NoiseReductionModeValues
| List of all NoiseReductionMode supported values.
const std::map< std::string, int32_t > | NoiseReductionModeNameValueMap
| Map of all NoiseReductionMode supported value names (in std::string format) to value.
const Control< int32_t > | NoiseReductionMode
| Control to select the noise reduction algorithm mode. Currently identical to ANDROID_NOISE_REDUCTION_MODE.
const std::array< const ControlValue, 3 > | ColorCorrectionAberrationModeValues
| List of all ColorCorrectionAberrationMode supported values.
const std::map< std::string, int32_t > | ColorCorrectionAberrationModeNameValueMap
| Map of all ColorCorrectionAberrationMode supported value names (in std::string format) to value.
const Control< int32_t > | ColorCorrectionAberrationMode
| Control to select the color correction aberration mode. Currently identical to ANDROID_COLOR_CORRECTION_ABERRATION_MODE.
const std::array< const ControlValue, 6 > | AeStateValues
| List of all AeState supported values.
const std::map< std::string, int32_t > | AeStateNameValueMap
| Map of all AeState supported value names (in std::string format) to value.
const Control< int32_t > | AeState
| Control to report the current AE algorithm state. Currently identical to ANDROID_CONTROL_AE_STATE.
const std::array< const ControlValue, 4 > | AwbStateValues
| List of all AwbState supported values.
const std::map< std::string, int32_t > | AwbStateNameValueMap
| Map of all AwbState supported value names (in std::string format) to value.
const Control< int32_t > | AwbState
| Control to report the current AWB algorithm state. Currently identical to ANDROID_CONTROL_AWB_STATE.
const Control< int64_t > | SensorRollingShutterSkew
| 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.
const std::array< const ControlValue, 2 > | LensShadingMapModeValues
| List of all LensShadingMapMode supported values.
const std::map< std::string, int32_t > | LensShadingMapModeNameValueMap
| Map of all LensShadingMapMode supported value names (in std::string format) to value.
const Control< int32_t > | LensShadingMapMode
| Control to report if the lens shading map is available. Currently identical to ANDROID_STATISTICS_LENS_SHADING_MAP_MODE.
const Control< int32_t > | PipelineDepth
| 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.
const Control< int32_t > | MaxLatency
| 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.
const std::array< const ControlValue, 6 > | TestPatternModeValues
| List of all TestPatternMode supported values.
const std::map< std::string, int32_t > | TestPatternModeNameValueMap
| Map of all TestPatternMode supported value names (in std::string format) to value.
const Control< int32_t > | TestPatternMode
| Control to select the test pattern mode. Currently identical to ANDROID_SENSOR_TEST_PATTERN_MODE.

## Detailed Description

Namespace for draft controls.

## Enumeration Type Documentation

## ◆ AePrecaptureTriggerEnum

enum libcamera::controls::draft::AePrecaptureTriggerEnum

Supported AePrecaptureTrigger values.

Enumerator
AePrecaptureTriggerIdle | The trigger is idle.
AePrecaptureTriggerStart | The pre-capture AE metering is started by the camera.
AePrecaptureTriggerCancel | The camera will cancel any active or completed metering sequence. The AE algorithm is reset to its initial state.

## ◆ AeStateEnum

enum libcamera::controls::draft::AeStateEnum

Supported AeState values.

Enumerator
AeStateInactive | The AE algorithm is inactive.
AeStateSearching | The AE algorithm has not converged yet.
AeStateConverged | The AE algorithm has converged.
AeStateLocked | The AE algorithm is locked.
AeStateFlashRequired | The AE algorithm would need a flash for good results.
AeStatePrecapture | The AE algorithm has started a pre-capture metering session. See also AePrecaptureTrigger

## ◆ AwbStateEnum

enum libcamera::controls::draft::AwbStateEnum

Supported AwbState values.

Enumerator
AwbStateInactive | The AWB algorithm is inactive.
AwbStateSearching | The AWB algorithm has not converged yet.
AwbConverged | The AWB algorithm has converged.
AwbLocked | The AWB algorithm is locked.

## ◆ ColorCorrectionAberrationModeEnum

enum libcamera::controls::draft::ColorCorrectionAberrationModeEnum

Supported ColorCorrectionAberrationMode values.

Enumerator
ColorCorrectionAberrationOff | No aberration correction is applied.
ColorCorrectionAberrationFast | Aberration correction will not slow down the frame rate.
ColorCorrectionAberrationHighQuality | High quality aberration correction which might reduce the frame rate.

## ◆ LensShadingMapModeEnum

enum libcamera::controls::draft::LensShadingMapModeEnum

Supported LensShadingMapMode values.

Enumerator
LensShadingMapModeOff | No lens shading map mode is available.
LensShadingMapModeOn | The lens shading map mode is available.

## ◆ NoiseReductionModeEnum

enum libcamera::controls::draft::NoiseReductionModeEnum

Supported NoiseReductionMode values.

Enumerator
NoiseReductionModeOff | No noise reduction is applied.
NoiseReductionModeFast | Noise reduction is applied without reducing the frame rate.
NoiseReductionModeHighQuality | High quality noise reduction at the expense of frame rate.
NoiseReductionModeMinimal | Minimal noise reduction is applied without reducing the frame rate.
NoiseReductionModeZSL | Noise reduction is applied at different levels to different streams.

## ◆ TestPatternModeEnum

enum libcamera::controls::draft::TestPatternModeEnum

Supported TestPatternMode values.

Enumerator
TestPatternModeOff | No test pattern mode is used. The camera device returns frames from the image sensor.
TestPatternModeSolidColor | 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.
TestPatternModeColorBars | 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.
TestPatternModeColorBarsFadeToGray | 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 smooth gradient, and the right half should have a quantized gradient. In particular, the right half's should consist of blocks of the same color for 1/16th active sensor pixel array width. The least significant bits in the quantized gradient should be copied from the most significant bits of the smooth gradient. The height of each bar should always be a multiple of 128. When this is not the case, the pattern should repeat at the bottom of the image.
TestPatternModePn9 | All pixel data is replaced by a pseudo-random sequence generated from a PN9 512-bit sequence (typically implemented in hardware with a linear feedback shift register). The generator should be reset at the beginning of each frame, and thus each subsequent raw frame with this test pattern should be exactly the same as the last.
TestPatternModeCustom1 | The first custom test pattern. All custom patterns that are available only on this camera device are at least this numeric value. All of the custom test patterns will be static (that is the raw image must not vary from frame to frame).

## Variable Documentation

## ◆ AePrecaptureTrigger

const Control<int32_t> libcamera::controls::draft::AePrecaptureTrigger
| extern

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.

## ◆ AeState

const Control<int32_t> libcamera::controls::draft::AeState
| extern

Control to report the current AE algorithm state. Currently identical to ANDROID_CONTROL_AE_STATE.

Current state of the AE algorithm.

## ◆ AwbState

const Control<int32_t> libcamera::controls::draft::AwbState
| extern

Control to report the current AWB algorithm state. Currently identical to ANDROID_CONTROL_AWB_STATE.

Current state of the AWB algorithm.

## ◆ ColorCorrectionAberrationMode

const Control<int32_t> libcamera::controls::draft::ColorCorrectionAberrationMode
| extern

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.

## ◆ NoiseReductionMode

const Control<int32_t> libcamera::controls::draft::NoiseReductionMode
| extern

Control to select the noise reduction algorithm mode. Currently identical to ANDROID_NOISE_REDUCTION_MODE.

Mode of operation for the noise reduction algorithm.

## ◆ PipelineDepth

const Control<int32_t> libcamera::controls::draft::PipelineDepth
| extern

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.