Is anyone working on support for the 
SDL_{Create|Lock|Unlock|Display|Free}YUVOverlay functions? If not, I would 
occasionally start working on these. Basically, the idea is to use the 
ImageData API for that. The (performance-wise) most cumbersome aspect of 
this was probably the YUV to RGBA conversion. AFAICS, the Canvas API does 
not provide a hw-accelerated API for that. WebGL may do so, but is still 
less portable.

Alternatively, the existing libsdl YUV software-based code may do as well.

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