Santo Shakil
3127dbec71
* refactor(mobile): move the native core decoders into a codecs crate * make Format private * rename the decode export and options for what they hold * drop the unused ios and server groups and rename the target params (cherry picked from commit 11bf875313782b8a9e10269bb6f85226b7bdcd72)
50 lines
1.1 KiB
Rust
50 lines
1.1 KiB
Rust
use std::sync::atomic::AtomicBool;
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use color::Target;
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use image::Image;
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pub mod color;
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pub mod image;
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#[cfg(feature = "jxl")]
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pub mod jxl;
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mod resize;
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enum Format {
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#[cfg(feature = "jxl")]
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Jxl,
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}
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pub struct Options {
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pub color_space: Target,
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/// Downscales to the smallest size that still fills this.
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pub target_size: Option<(usize, usize)>,
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/// Downscales to fit within this many pixels per side.
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pub max_pixel_size: usize,
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}
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fn probe(data: &[u8]) -> Option<Format> {
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#[cfg(feature = "jxl")]
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if matches!(
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::jxl::api::check_signature(data),
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::jxl::api::JxlSignature::Codestream | ::jxl::api::JxlSignature::Container
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) {
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return Some(Format::Jxl);
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}
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None
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}
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/// Decodes the first frame of `data` unless cancelled.
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pub fn decode(data: &[u8], options: &Options, cancelled: &AtomicBool) -> Option<Image> {
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match probe(data)? {
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#[cfg(feature = "jxl")]
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Format::Jxl => jxl::Jxl::open(data, options.color_space)?.decode(
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options.target_size,
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options.max_pixel_size,
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cancelled,
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),
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}
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}
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