Struct OpenRasterDecoder 

pub struct OpenRasterDecoder<'a, R>
where
    R: Read + Seek + 'a,
{ /* private fields */ }

Implementations

impl<'a, R> OpenRasterDecoder<'a, R>

where R: Read + Seek + 'a,

pub fn with_limits( r: R, limits: Limits, ) -> Result<OpenRasterDecoder<'a, R>, ImageError>

Create a new OpenRasterDecoder with the provided limits.

(Limits need to be specified in advance, because determining the minimum information needed for the ImageDecoder trait (image size and color type) may require reading through and remembering image-dependent amount of data.)

Warning: While decoding limits apply to the header parsing and decoding of the merged imaged component (a PNG file inside the ZIP archive that forms an OpenRaster file), memory constraints on the ZIP file decoding process have not yet been implemented; input ZIP files with very many entries may require significant amounts of memory to read.

Trait Implementations

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

fn dimensions(&self) -> (u32, u32)

Returns a tuple containing the width and height of the image

fn color_type(&self) -> ColorType

Returns the color type of the image data produced by this decoder

fn original_color_type(&self) -> ExtendedColorType

Returns the color type of the image file before decoding

fn set_limits(&mut self, limits: Limits) -> ImageResult<()>

Set the decoder to have the specified limits. See Limits for the different kinds of limits that is possible to set.

fn icc_profile(&mut self) -> ImageResult<Option<Vec<u8>>>

Returns the ICC color profile embedded in the image, or Ok(None) if the image does not have one.

fn exif_metadata(&mut self) -> ImageResult<Option<Vec<u8>>>

Returns the raw Exif chunk, if it is present. A third-party crate such as kamadak-exif is required to actually parse it.

fn orientation(&mut self) -> ImageResult<Orientation>

Returns the orientation of the image.

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

Returns all the bytes in the image.

fn read_image_boxed(self: Box<Self>, buf: &mut [u8]) -> ImageResult<()>

Use read_image instead; this method is an implementation detail needed so the trait can be object safe.

fn xmp_metadata(&mut self) -> Result<Option<Vec<u8>>, ImageError>

Returns the raw XMP chunk, if it is present. A third-party crate such as roxmltree is required to actually parse it.

fn iptc_metadata(&mut self) -> Result<Option<Vec<u8>>, ImageError>

Returns the raw IPTC chunk, if it is present.

fn total_bytes(&self) -> u64

Returns the total number of bytes in the decoded image.