Enum GainMapPresence 

#[non_exhaustive]
pub enum GainMapPresence {
    Unknown,
    Absent,
    Available(Box<GainMapInfo>),
}

Gain map detection state during probe.

Three-state presence indicator:

• Unknown — can’t determine from bytes probed (gain map may be beyond probe window)
• Absent — definitively no gain map in this file
• Available — gain map found and metadata parsed

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.

Unknown

Cannot determine gain map presence from bytes probed so far.

Absent

File definitively has no gain map.

Available(Box<GainMapInfo>)

Gain map present, metadata parsed.

Implementations

impl GainMapPresence

pub fn is_present(&self) -> bool

Whether a gain map is definitely present.

pub fn is_absent(&self) -> bool

Whether a gain map is definitively absent.

pub fn is_unknown(&self) -> bool

Whether gain map presence is unknown.

pub fn info(&self) -> Option<&GainMapInfo>

Reference to the gain map info, if available.

pub fn into_info(self) -> Option<Box<GainMapInfo>>

Consume and return the gain map info, if available.

Trait Implementations

impl Clone for GainMapPresence

fn clone(&self) -> GainMapPresence

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GainMapPresence

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

Formats the value using the given formatter.

impl Default for GainMapPresence

fn default() -> GainMapPresence

Returns the “default value” for a type.

impl PartialEq for GainMapPresence

fn eq(&self, other: &GainMapPresence) -> 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 StructuralPartialEq for GainMapPresence