[Webkit-unassigned] [Bug 47512] Add support for decoding WebP image

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Oct 11 16:10:02 PDT 2010


--- Comment #1 from Adam Barth <abarth at webkit.org>  2010-10-11 16:10:02 PST ---
(From update of attachment 70489)
View in context: https://bugs.webkit.org/attachment.cgi?id=70489&action=review

> WebKit/WebCore/ChangeLog:7
> +        Add support for WebP image decoding in ImageDecoder
> +	using library libwebp-decode library available from
> +	http://www.webmproject.org/code/

These tabs are going to case problems when landing the patch.

> WebKit/WebCore/ChangeLog:9
> +        No new tests. (OOPS!)

Can we have tests?  (This line will prevent this patch from landing.)

> WebKit/WebCore/platform/image-decoders/ImageDecoder.cpp:82
> +    // WEBP
> +    if (!memcmp(contents, "RIFF", 4))
> +        return new WEBPImageDecoder(premultiplyAlpha);
> +#endif

This signature isn't very good.  What about other things in RIFF containers?  Also, magic strings that are entirely ASCII characters are undesirable.  Is there really no better magic number for webp?

> WebKit/WebCore/features.pri:71

ENABLE_WEBP=1 ?  From your bug comment, I would have expected ENABLE_WEBP=0.

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