Enum png::decoder::stream::U32ValueKind

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enum U32ValueKind {
    Signature1stU32,
    Signature2ndU32,
    Length,
    Type {
        length: u32,
    },
    Crc(ChunkType),
    ApngSequenceNumber,
}
Expand description

Kind of u32 value that is being read via State::U32.

Variants§

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Signature1stU32

First 4 bytes of the PNG signature - see http://www.libpng.org/pub/png/spec/1.2/PNG-Structure.html#PNG-file-signature

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Signature2ndU32

Second 4 bytes of the PNG signature - see http://www.libpng.org/pub/png/spec/1.2/PNG-Structure.html#PNG-file-signature

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Length

Chunk length - see http://www.libpng.org/pub/png/spec/1.2/PNG-Structure.html#Chunk-layout

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Type

Chunk type - see http://www.libpng.org/pub/png/spec/1.2/PNG-Structure.html#Chunk-layout

Fields

§length: u32
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Crc(ChunkType)

Chunk checksum - see http://www.libpng.org/pub/png/spec/1.2/PNG-Structure.html#Chunk-layout

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ApngSequenceNumber

Sequence number from an fdAT chunk - see https://wiki.mozilla.org/APNG_Specification#.60fdAT.60:_The_Frame_Data_Chunk

Trait Implementations§

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impl Debug for U32ValueKind

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.