Struct image::pnm::PNMDecoder

[+] Show declaration

pub struct PNMDecoder<R> { /* fields omitted */ }

[−] Expand description

PNM decoder

Methods

impl<R: Read> PNMDecoder<R>[−]

pub fn new(read: R) -> ImageResult<PNMDecoder<R>>[−]

Create a new decoder that decodes from the stream read

pub fn into_inner(self) -> (R, PNMHeader)[−]

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

impl<R: Read> PNMDecoder<R>[−]

pub fn subtype(&self) -> PNMSubtype[−]

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

Trait Implementations

impl<R: Read> ImageDecoder for PNMDecoder<R>[+]

[+] Show hidden undocumented items

fn dimensions(&mut self) -> ImageResult<(u32, u32)>[−]

Returns a tuple containing the width and height of the image

fn colortype(&mut self) -> ImageResult<ColorType>[−]

Returns the color type of the image e.g. RGB(8) (8bit RGB)

fn row_len(&mut self) -> ImageResult<usize>[−]

Returns the length in bytes of one decoded row of the image

fn read_scanline(&mut self, _buf: &mut [u8]) -> ImageResult<u32>[−]

Reads one row from the image into buf and returns the row index

fn read_image(&mut self) -> ImageResult<DecodingResult>[−]

Decodes the entire image and return it as a Vector

fn is_animated(&mut self) -> ImageResult<bool>[−]

Returns true if the image is animated

fn into_frames(self) -> ImageResult<Frames>[−]

Returns the frames of the image

fn load_rect(
    &mut self,
    x: u32,
    y: u32,
    length: u32,
    width: u32
) -> ImageResult<Vec<u8>>[−]

Decodes a specific region of the image, represented by the rectangle starting from x and y and having length and width