feat: re-export rgb::prelude for trait access#4
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kornelski merged 1 commit intokornelski:mainfrom Jan 19, 2026
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Re-exports the rgb crate's prelude module so that users of yuv can access traits like `Pixel` (which provides the `.map()` method) without needing to add rgb as a direct dependency. This enables code like: ```rust use yuv::prelude::*; let half = pixel.map(|c| c / 2); ``` The prelude re-export works with both rgb 0.8.x and upcoming 0.8.91+, providing forward compatibility as the rgb crate transitions its trait system.
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This was referenced Jan 19, 2026
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Summary
Re-exports the rgb crate's prelude module so that users of yuv can access traits like
Pixel(which provides the.map()method) without needing to add rgb as a direct dependency.Problem
When using
yuv::RGBoryuv::RGBAtypes, calling.map()requires thePixeltrait (orComponentMapin older versions) to be in scope. Currently, users need to add rgb as a dependency and import the trait themselves.This becomes a breaking change issue when rgb 0.8.91 is released, as the trait providing
.map()changes fromComponentMaptoPixel.Solution
Re-export
rgb::preludeso users can:The prelude approach is forward-compatible - it works with both rgb 0.8.x (exports
ComponentMap) and rgb 0.8.91+ (exportsPixel).Related
This helps downstream crates like
aom-decodewhich useyuv::RGBtypes with.map().