Struct ImageData 

pub struct ImageData { /* private fields */ }

A decoded or passthrough image ready to embed as an image XObject.

Implementations

impl ImageData

pub fn png(bytes: &[u8]) -> Result<ImageData>

Imports a PNG. Truecolor and grayscale (8- and 16-bit, the latter reduced to 8), palette (expanded), and alpha (split to /SMask) are all supported.

pub fn jpeg(bytes: &[u8]) -> Result<ImageData>

Imports a baseline or progressive JPEG by passthrough. Dimensions and component count are read from the SOF marker; grayscale and three-component (YCbCr/RGB) images are supported, anything else is an error.

pub fn decode(bytes: &[u8]) -> Result<ImageData>

Imports a PNG or JPEG, dispatched by content rather than by file extension: a PNG signature selects ImageData::png, a JPEG SOI marker selects ImageData::jpeg, anything else is an error.

pub fn gray8(width: u32, height: u32, data: Vec<u8>) -> Result<ImageData>

Wraps an 8-bit grayscale raster; data is width * height bytes.

pub fn rgb8(width: u32, height: u32, data: Vec<u8>) -> Result<ImageData>

Wraps an 8-bit RGB raster; data is width * height * 3 bytes.

pub fn mono(width: u32, height: u32, data: Vec<u8>) -> Result<ImageData>

Wraps a 1-bit raster; rows are packed MSB-first, each row padded to a whole byte. A set bit is black (sample 0).

pub fn width(&self) -> u32

Pixel width.

pub fn height(&self) -> u32

Pixel height.

Trait Implementations

impl Clone for ImageData

fn clone(&self) -> ImageData

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ImageData

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ImageData

fn eq(&self, other: &ImageData) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ImageData