Struct JxlBasicInfo 

#[non_exhaustive]
pub struct JxlBasicInfo {
    pub size: (usize, usize),
    pub coded_size: (usize, usize),
    pub bit_depth: JxlBitDepth,
    pub orientation: Orientation,
    pub intrinsic_orientation: Orientation,
    pub extra_channels: Vec<JxlExtraChannel>,
    pub animation: Option<JxlAnimation>,
    pub uses_original_profile: bool,
    pub tone_mapping: ToneMapping,
    pub preview_size: Option<(usize, usize)>,
    pub intrinsic_size: Option<(usize, usize)>,
}

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

size: (usize, usize)

Dimensions of the pixel data the decoder will emit, in the order the output buffer must be laid out ((width, height)).

This depends on JxlDecoderOptions::adjust_orientation:

• When orientation is adjusted (the default, “Correct”), the stored orientation is baked into the output, so this is the display size (width/height are swapped relative to Self::coded_size for transposing orientations).
• When orientation adjustment is disabled (“Preserve”), pixels are emitted in their stored orientation, so this equals Self::coded_size.

Allocate output buffers against this size.

coded_size: (usize, usize)

The stored (coded) dimensions of the image as written in the codestream, (width, height), before any orientation is applied. Unaffected by JxlDecoderOptions::adjust_orientation. For transposing orientations this differs from the display size; see Self::size.

bit_depth: JxlBitDepth

orientation: Orientation

Orientation of the pixels the decoder emits, i.e. the residual transform a caller must still apply to obtain an upright image.

This depends on JxlDecoderOptions::adjust_orientation:

• When orientation is adjusted (the default, “Correct”), the stored orientation has already been baked into the output pixels, so this is Orientation::Identity.
• When orientation adjustment is disabled (“Preserve”), this is the image’s stored orientation (equal to Self::intrinsic_orientation), which the caller should bake into the Self::coded_size pixels to display them upright.

intrinsic_orientation: Orientation

The image’s intrinsic (stored) EXIF/container orientation as written in the codestream, regardless of JxlDecoderOptions::adjust_orientation.

Use this to re-tag re-encoded output or to decide how to bake the stored orientation. In “Correct” mode the emitted pixels are already upright even though this reports a non-Identity value; in “Preserve” mode this equals Self::orientation.

extra_channels: Vec<JxlExtraChannel>

animation: Option<JxlAnimation>

uses_original_profile: bool

tone_mapping: ToneMapping

preview_size: Option<(usize, usize)>

intrinsic_size: Option<(usize, usize)>

Intrinsic display size, if different from coded size.

When present, the image should be rendered at this (width, height) rather than the coded size. Used for resolution-independence (e.g. a 4000×3000 image meant to display at 2000×1500).

Trait Implementations

impl Clone for JxlBasicInfo

fn clone(&self) -> JxlBasicInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.