Struct jxl_frame::Frame

pub struct Frame { /* private fields */ }

JPEG XL frame.

A frame represents a single unit of image that can be displayed or referenced by other frames.

Implementations

impl Frame

pub fn alloc_tracker(&self) -> Option<&AllocTracker>

pub fn image_header(&self) -> &ImageHeader

pub fn clone_image_header(&self) -> Arc<ImageHeader>

pub fn header(&self) -> &FrameHeader

Returns the frame header.

pub fn toc(&self) -> &Toc

Returns the TOC.

See the documentation of Toc for details.

pub fn pass_shifts(&self) -> &BTreeMap<u32, (i32, i32)>

pub fn data(&self, group: TocGroupKind) -> Option<&[u8]>

impl Frame

pub fn feed_bytes<'buf>(&mut self, buf: &'buf [u8]) -> &'buf [u8]

pub fn is_loading_done(&self) -> bool

impl Frame

pub fn try_parse_lf_global<S: Sample>(&self) -> Option<Result<LfGlobal<S>>>

pub fn try_parse_lf_group<S: Sample>( &self, lf_global_vardct: Option<&LfGlobalVarDct>, global_ma_config: Option<&MaConfig>, mlf_group: Option<TransformedModularSubimage<'_, S>>, lf_group_idx: u32 ) -> Option<Result<LfGroup<S>>>

pub fn try_parse_hf_global<S: Sample>( &self, cached_lf_global: Option<&LfGlobal<S>> ) -> Option<Result<HfGlobal>>

pub fn pass_group_bitstream( &self, pass_idx: u32, group_idx: u32 ) -> Option<Result<PassGroupBitstream<'_>>>

impl Frame

pub fn adjust_region( &self, (left, top, width, height): &mut (u32, u32, u32, u32) )

Adjusts the cropping region of the image to the actual decoding region of the frame.

The cropping region of the image needs to be adjusted to be used in a frame, for a few reasons:

• A frame may be blended to the canvas with offset, which makes the image and the frame have different coordinates.
• Some filters reference other samples, which requires padding to the region.

This method takes care of those and adjusts the given region appropriately.

Trait Implementations

impl Bundle<FrameContext<'_>> for Frame

type Error = Error

fn parse(bitstream: &mut Bitstream<'_>, ctx: FrameContext<'_>) -> Result<Self>

Parses a value from the bitstream with the given context.

impl Debug for Frame

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

Formats the value using the given formatter.