The QCameraImageProcessingControl class provides an abstract class for controlling image processing parameters, like white balance, contrast, saturation, sharpening and denoising. 更多...
| 头： | #include <QCameraImageProcessingControl> |
| qmake: | QT += multimedia |
| 继承： | QMediaControl |
| enum | ProcessingParameter { WhiteBalancePreset, ColorTemperature, Contrast, Saturation, ..., ExtendedParameter } |
| ~QCameraImageProcessingControl () | |
| virtual bool | isParameterSupported (ProcessingParameter 参数 ) const = 0 |
| virtual bool | isParameterValueSupported (ProcessingParameter 参数 , const QVariant & value ) const = 0 |
| virtual QVariant | 参数 (ProcessingParameter 参数 ) const = 0 |
| virtual void | setParameter (ProcessingParameter 参数 , const QVariant & value ) = 0 |
| QCameraImageProcessingControl (QObject * parent = Q_NULLPTR) |
| QCameraImageProcessingControl_iid |
The QCameraImageProcessingControl class provides an abstract class for controlling image processing parameters, like white balance, contrast, saturation, sharpening and denoising.
接口名称对于
QCameraImageProcessingControl
is
org.qt-project.qt.cameraimageprocessingcontrol/5.0
作为定义在
QCameraImageProcessingControl_iid
.
Camera service may choose the parameters of image processing pipeline depending on sensor properties camera settings and capture parameters.
This control allows to modify some parameters of image processing pipeline to achieve desired results.
Parameters with the "Adjustment" suffix, like ContrastAdjustment , SaturationAdjustment etc allows to adjust the parameter values, selected by camera engine, while parameters like Contrast and Saturation overwrites them.
For example setting the SharpeningAdjustment parameter to -0.1 slightly reduces the amount of sharpening applied, while settings the Sharpening parameter to 0 disables sharpening at all.
另请参阅 QMediaService::requestControl () 和 QCamera .
| 常量 | 值 | 描述 |
|---|---|---|
QCameraImageProcessingControl::WhiteBalancePreset
|
0
|
The white balance preset. |
QCameraImageProcessingControl::ColorTemperature
|
1
|
Color temperature in K. This value is used when the manual white balance mode is selected. |
QCameraImageProcessingControl::Contrast
|
2
|
Image contrast. |
QCameraImageProcessingControl::Saturation
|
3
|
Image saturation. |
QCameraImageProcessingControl::Brightness
|
4
|
Image brightness. |
QCameraImageProcessingControl::Sharpening
|
5
|
Amount of sharpening applied. |
QCameraImageProcessingControl::Denoising
|
6
|
Amount of denoising applied. |
QCameraImageProcessingControl::ContrastAdjustment
|
7
|
Image contrast adjustment. |
QCameraImageProcessingControl::SaturationAdjustment
|
8
|
Image saturation adjustment. |
QCameraImageProcessingControl::BrightnessAdjustment
|
9
|
Image brightness adjustment. |
QCameraImageProcessingControl::SharpeningAdjustment
|
10
|
Adjustment of sharpening applied. |
QCameraImageProcessingControl::DenoisingAdjustment
|
11
|
Adjustment of denoising applied. |
QCameraImageProcessingControl::ColorFilter
|
12
|
Image filter applied. Since 5.5 |
QCameraImageProcessingControl::ExtendedParameter
|
1000
|
The base value for platform specific extended parameters. |
[protected]
QCameraImageProcessingControl::
QCameraImageProcessingControl
(
QObject
*
parent
= Q_NULLPTR)
Constructs an image processing control object with parent .
Destruct the image processing control object.
[pure virtual]
bool
QCameraImageProcessingControl::
isParameterSupported
(
ProcessingParameter
参数
) const
Returns true if the camera supports adjusting image processing 参数 .
Usually the supported setting is static, but some parameters may not be available depending on other camera settings, like presets. In such case the currently supported parameters should be returned.
[pure virtual]
bool
QCameraImageProcessingControl::
isParameterValueSupported
(
ProcessingParameter
参数
, const
QVariant
&
value
) const
Returns true if the camera supports setting the image processing 参数 value .
It's used only for parameters with a limited set of values, like WhiteBalancePreset .
[pure virtual]
QVariant
QCameraImageProcessingControl::
参数
(
ProcessingParameter
参数
) const
Returns the image processing 参数 值。
另请参阅 setParameter ().
[pure virtual]
void
QCameraImageProcessingControl::
setParameter
(
ProcessingParameter
参数
, const
QVariant
&
value
)
Sets the image processing 参数 value . Passing the null or invalid QVariant value allows backend to choose the suitable parameter value.
The valid values range depends on the parameter type. For WhiteBalancePreset the value should be one of QCameraImageProcessing::WhiteBalanceMode values; for Contrast, Saturation, Brightness, Sharpening and Denoising the value should be in [0..1.0] range with invalid QVariant value indicating the default parameter value; for ContrastAdjustment , SaturationAdjustment , BrightnessAdjustment , SharpeningAdjustment and DenoisingAdjustment the value should be in [-1.0..1.0] range with default 0.
另请参阅 参数 ().
org.qt-project.qt.cameraimageprocessingcontrol/5.0
定义接口名为 QCameraImageProcessingControl 类。