[Webkit-unassigned] [Bug 90375] Parallel image decoders

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=90375





--- Comment #34 from Hin-Chung Lam <hclam at google.com>  2012-07-19 20:54:54 PST ---
> As you suggested, we can implement these metadata friends as simple getters which do not trigger image decoding, but then we must be very careful in using these getters.
> 
> That's the reason why we introduced RetainedModeBitmapImage class. If a client wants to use BitmapImage asynchronously, we can simply wrap it with RetainedModeBitmapImage and everything is taken care of. We know this is not the best solution, but we couldn't find a better solution.
> 
> Do you have any idea on how we can make these metadata queries simple getters?

Thanks for showing me the thoughts that went into making this decision, this makes much sense to me now. Having review the material I agree this seems like the best possible solution, without having to refactor all usage of BitmapImage.

My gut feeling still tells me by going though a hard refactoring we can eventually remove the need of RetainedModeBitmapImage. However I would agree this is a very good intermediate step.

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