image::codecs::pnm

Struct PnmDecoder

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pub struct PnmDecoder<R> { /* private fields */ }
Expand description

PNM decoder

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impl<R: BufRead> PnmDecoder<R>

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pub fn new(buffered_read: R) -> ImageResult<PnmDecoder<R>>

Create a new decoder that decodes from the stream read

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pub fn into_inner(self) -> (R, PnmHeader)

Extract the reader and header after an image has been read.

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impl<R: Read> PnmDecoder<R>

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pub fn subtype(&self) -> PnmSubtype

Get the pnm subtype, depending on the magic constant contained in the header

Trait Implementations§

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impl<'a, R: 'a + Read> ImageDecoder<'a> for PnmDecoder<R>

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type Reader = PnmReader<R>

The type of reader produced by into_reader.
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fn dimensions(&self) -> (u32, u32)

Returns a tuple containing the width and height of the image
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fn color_type(&self) -> ColorType

Returns the color type of the image data produced by this decoder
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fn original_color_type(&self) -> ExtendedColorType

Returns the color type of the image file before decoding
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fn into_reader(self) -> ImageResult<Self::Reader>

👎Deprecated: Planned for removal. See https://github.com/image-rs/image/issues/1989
Returns a reader that can be used to obtain the bytes of the image. For the best performance, always try to read at least scanline_bytes from the reader at a time. Reading fewer bytes will cause the reader to perform internal buffering.
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fn read_image(self, buf: &mut [u8]) -> ImageResult<()>

Returns all the bytes in the image. Read more
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fn icc_profile(&mut self) -> Option<Vec<u8>>

Returns the ICC color profile embedded in the image Read more
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fn total_bytes(&self) -> u64

Returns the total number of bytes in the decoded image. Read more
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fn scanline_bytes(&self) -> u64

👎Deprecated: Planned for removal. See https://github.com/image-rs/image/issues/1989
Returns the minimum number of bytes that can be efficiently read from this decoder. This may be as few as 1 or as many as total_bytes().
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fn read_image_with_progress<F: Fn(Progress)>( self, buf: &mut [u8], progress_callback: F, ) -> ImageResult<()>

👎Deprecated: Use read_image instead. See https://github.com/image-rs/image/issues/1989
Same as read_image but periodically calls the provided callback to give updates on loading progress.
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fn set_limits(&mut self, limits: Limits) -> ImageResult<()>

Set decoding limits for this decoder. See Limits for the different kinds of limits that is possible to set. Read more

Auto Trait Implementations§

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impl<R> Freeze for PnmDecoder<R>
where R: Freeze,

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impl<R> RefUnwindSafe for PnmDecoder<R>
where R: RefUnwindSafe,

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impl<R> Send for PnmDecoder<R>
where R: Send,

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impl<R> Sync for PnmDecoder<R>
where R: Sync,

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impl<R> Unpin for PnmDecoder<R>
where R: Unpin,

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impl<R> UnwindSafe for PnmDecoder<R>
where R: UnwindSafe,

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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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.