Enum OrientationPolicy 

#[non_exhaustive]
pub enum OrientationPolicy {
    ExifOnly,
    MakerNotePreferred,
    MakerNoteWhenExifNormal,
    CanonAutoRotateAware,
}

How the standard and vendor orientation records of a camera are combined.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

ExifOnly

Only the standard tag is used; vendor records are informational.

MakerNotePreferred

The vendor record wins whenever it is present.

MakerNoteWhenExifNormal

The vendor record is used when the standard tag is Normal, missing or invalid (for cameras that only write the rotation into the vendor record).

CanonAutoRotateAware

Canon: the camera writes the standard tag from its orientation sensor only when its Auto Rotate setting is on, and always records the sensor in the MakerNote (CameraOrientation). A Normal standard tag is therefore what the camera chose unless the recorded Auto Rotate setting says it was on; the MakerNote replaces the standard tag only when that tag is missing or invalid, or when Auto Rotate was on and the tag still says Normal.

Implementations

impl OrientationPolicy

pub fn name(self) -> &'static str

Stable kebab-case name, as used in the camera database.

pub fn parse(s: &str) -> Option<Self>

Parse a name produced by OrientationPolicy::name.

Trait Implementations

impl Clone for OrientationPolicy

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for OrientationPolicy

impl Debug for OrientationPolicy

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

Formats the value using the given formatter.

impl Default for OrientationPolicy

fn default() -> Self

Returns the “default value” for a type.

impl Eq for OrientationPolicy

impl Hash for OrientationPolicy

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for OrientationPolicy

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for OrientationPolicy