Enum AeConstraintMode

#[repr(i32)]
pub enum AeConstraintMode {
    ConstraintNormal = 0,
    ConstraintHighlight = 1,
    ConstraintShadows = 2,
    ConstraintCustom = 3,
}

Specify a constraint mode for the AE algorithm to use.

The constraint modes 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.

Variants

ConstraintNormal = 0

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.

ConstraintHighlight = 1

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.

ConstraintShadows = 2

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.

ConstraintCustom = 3

Custom constraint mode.

Trait Implementations

impl Clone for AeConstraintMode

fn clone(&self) -> AeConstraintMode

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ControlEntry for AeConstraintMode

const ID: u32 = 4u32

impl Debug for AeConstraintMode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<AeConstraintMode> for ControlValue

fn from(val: AeConstraintMode) -> Self

Converts to this type from the input type.

impl From<AeConstraintMode> for i32

fn from(enum_value: AeConstraintMode) -> Self

Converts to this type from the input type.

impl PartialEq for AeConstraintMode

fn eq(&self, other: &AeConstraintMode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<ControlValue> for AeConstraintMode

type Error = ControlValueError

The type returned in the event of a conversion error.

fn try_from(value: ControlValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<i32> for AeConstraintMode

type Error = TryFromPrimitiveError<AeConstraintMode>

The type returned in the event of a conversion error.

fn try_from(number: i32) -> Result<Self, TryFromPrimitiveError<Self>>

Performs the conversion.

impl TryFromPrimitive for AeConstraintMode

const NAME: &'static str = "AeConstraintMode"

type Primitive = i32

fn try_from_primitive( number: Self::Primitive, ) -> Result<Self, TryFromPrimitiveError<Self>>

impl Control for AeConstraintMode

impl Copy for AeConstraintMode

impl Eq for AeConstraintMode

impl StructuralPartialEq for AeConstraintMode