Enum IfdKind 

#[non_exhaustive]
pub enum IfdKind {
    Tiff,
    Exif,
    Gps,
    Interop,
}

Which IFD namespace an entry belongs to.

Orthogonal to IfdIndex: the index identifies a position in the IFD chain (IFD0, IFD1, …), while the kind identifies the tag namespace. A GPS sub-IFD hanging off IFD0 is IfdIndex::MAIN + IfdKind::Gps.

This distinction matters because each namespace assigns its own meaning to the same 16-bit code — 0x000b is ProcessingSoftware in Self::Tiff but GPSDOP in Self::Gps. Use crate::TagOrCode::from_code_in to resolve a code within a known namespace.

Marked #[non_exhaustive]: more namespaces (MakerNote, SubIFD, …) may be added, so match must carry a _ => arm.

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.

Tiff

The TIFF/Exif image directories themselves (IFD0, IFD1, …).

Exif

The Exif private sub-IFD, reached via ExifOffset (0x8769).

Gps

The GPS sub-IFD, reached via GPSInfo (0x8825).

Interop

The Interoperability sub-IFD, reached via InteropOffset (0xa005).

Trait Implementations

impl Clone for IfdKind

fn clone(&self) -> IfdKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for IfdKind

impl Debug for IfdKind

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for IfdKind

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for IfdKind

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

Formats the value using the given formatter.

impl Eq for IfdKind

impl Hash for IfdKind

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 Ord for IfdKind

fn cmp(&self, other: &IfdKind) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for IfdKind

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for IfdKind

fn partial_cmp(&self, other: &IfdKind) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for IfdKind

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for IfdKind