Struct JxlDecoderBuilder 

pub struct JxlDecoderBuilder<'pr, 'mm> { /* private fields */ }

Builder for JxlDecoder.

Implementations

impl<'pr, 'mm> JxlDecoderBuilder<'pr, 'mm>

pub fn pixel_format(&mut self, value: PixelFormat) -> &mut Self

Override desired pixel format

pub fn skip_reorientation(&mut self, value: bool) -> &mut Self

Enables or disables preserving of as-in-bitstream pixel data orientation. If it is set to true, the decoder will skip applying the transformation

Default

false, and the returned pixel data is re-oriented

pub fn unpremul_alpha(&mut self, value: bool) -> &mut Self

Enables or disables preserving of associated alpha channels. If it is set to true, the colors will be unpremultiplied based on the alpha channel

Default

false, and return the pixel data “as is”.

pub fn render_spotcolors(&mut self, value: bool) -> &mut Self

Enables or disables rendering spot colors. If it is set to false, then spot colors are not rendered, and have to be retrieved separately. This is useful for printing applications

Default

true, and spot colors are rendered, which is OK for viewing the decoded image

pub fn coalescing(&mut self, value: bool) -> &mut Self

Enables or disables coalescing of zero-duration frames. For loading a multi-layer still image as separate layers (as opposed to the merged image), coalescing has to be disabled

Default

true, and all frames have the image dimensions, and are blended if needed.

pub fn desired_intensity_target(&mut self, value: f32) -> &mut Self

Perform tone mapping to the peak display luminance.

Note

This is provided for convenience and the exact tone mapping that is performed is not meant to be considered authoritative in any way. It may change from version to version

pub fn decompress(&mut self, value: bool) -> &mut Self

Configures whether to get boxes in raw mode or in decompressed mode.

Default

false, and the boxes are returned in raw mode

pub fn progressive_detail(&mut self, value: JxlProgressiveDetail) -> &mut Self

Configures at which progressive steps in frame decoding

Default

ProgressiveDetail::DC

pub fn icc_profile(&mut self, value: bool) -> &mut Self

Set if need ICC profile

Default

false

pub fn init_jpeg_buffer(&mut self, value: usize) -> &mut Self

Set initial buffer for JPEG reconstruction Larger buffer could make reconstruction faster by doing fewer reallocation

Default: 512 KiB

pub fn parallel_runner(&mut self, value: &'pr dyn ParallelRunner) -> &mut Self

Set parallel runner

pub fn memory_manager(&mut self, value: &'mm dyn MemoryManager) -> &mut Self

Set memory manager

impl<'pr, 'mm> JxlDecoderBuilder<'pr, 'mm>

pub fn build(&mut self) -> Result<JxlDecoder<'pr, 'mm>, DecodeError>

Build a JxlDecoder

Errors

Return DecodeError::CannotCreateDecoder if it fails to create the decoder.

Trait Implementations

impl<'pr, 'mm> Clone for JxlDecoderBuilder<'pr, 'mm>

fn clone(&self) -> JxlDecoderBuilder<'pr, 'mm>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'pr, 'mm> Default for JxlDecoderBuilder<'pr, 'mm>

fn default() -> Self

Returns the “default value” for a type.