[−][src]Trait image::ImageDecoder

pub trait ImageDecoder: Sized {
    fn dimensions(&mut self) -> ImageResult<(u32, u32)>;

    fn colortype(&mut self) -> ImageResult<ColorType>;

    fn row_len(&mut self) -> ImageResult<usize>;

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

    fn read_image(&mut self) -> ImageResult<DecodingResult>;

    fn is_animated(&mut self) -> ImageResult<bool> { ... }

    fn into_frames(self) -> ImageResult<Frames> { ... }

    fn load_rect(
        &mut self, 
        x: u32, 
        y: u32, 
        length: u32, 
        width: u32
    ) -> ImageResult<Vec<u8>> { ... }
}

The trait that all decoders implement

Required methods

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

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Provided methods

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

If the image is not animated it returns a single frame

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

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Implementors

impl<R: BufRead> ImageDecoder for HDRAdapter<R>[src]

impl<R: Read + Seek> ImageDecoder for BMPDecoder<R>[src]

impl<R: Read + Seek> ImageDecoder for ICODecoder<R>[src]

impl<R: Read + Seek> ImageDecoder for TGADecoder<R>[src]

impl<R: Read + Seek> ImageDecoder for TIFFDecoder<R>[src]

impl<R: Read> ImageDecoder for Decoder<R>[src]

impl<R: Read> ImageDecoder for JPEGDecoder<R>[src]

impl<R: Read> ImageDecoder for PNGDecoder<R>[src]

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

impl<R: Read> ImageDecoder for PPMDecoder<R>[src]

impl<R: Read> ImageDecoder for WebpDecoder<R>[src]

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