Struct Image 

pub struct Image<'a> { /* private fields */ }

A JPEG2000 image or codestream.

Implementations

impl<'a> Image<'a>

pub fn new(data: &'a [u8], settings: &DecodeSettings) -> Result<Self>

Try to create a new JPEG2000 image from the given data.

pub fn has_alpha(&self) -> bool

Whether the image has an alpha channel.

pub fn color_space(&self) -> &ColorSpace

The color space of the image.

pub fn width(&self) -> u32

The width of the image.

pub fn height(&self) -> u32

The height of the image.

pub fn original_bit_depth(&self) -> u8

The original bit depth of the image. You usually don’t need to do anything with this parameter, it just exists for informational purposes.

pub fn decode(&self) -> Result<Vec<u8>>

Decode the image.

Trait Implementations

impl ImageDecoder for Image<'_>

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

where Self: Sized,

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

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

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

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

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 orientation(&mut self) -> Result<Orientation, ImageError>

Returns the orientation of the image.

fn total_bytes(&self) -> u64

Returns the total number of bytes in the decoded image.

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

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