BitmapImage::destroyDecodedDataIfNecessary() should only count frames with image data

[Simon Fraser (smfr)]

BitmapImage::destroyDecodedDataIfNecessary() should only count frames with image data

[Simon Fraser (smfr)]

Created attachment 279080 [details]
Patch

[Said Abou-Hallawa]

Comment on attachment 279080 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=279080&action=review

Unofficial r=me

> Source/WebCore/platform/graphics/BitmapImage.h:90
> +    unsigned usedFrameBytes() const { return m_image ? m_frameBytes : 0; }

Do we need to call it usedFrameBytes()? Should not it be just named frameBytes()? I think it supposed to return the bytes of the image stored in this frame. So if the image is nil the frameBytes should be zero.

[Simon Fraser (smfr)]

(In reply to comment #2)
> Comment on attachment 279080 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=279080&action=review
> 
> Unofficial r=me
> 
> > Source/WebCore/platform/graphics/BitmapImage.h:90
> > +    unsigned usedFrameBytes() const { return m_image ? m_frameBytes : 0; }
> 
> Do we need to call it usedFrameBytes()? Should not it be just named
> frameBytes()? I think it supposed to return the bytes of the image stored in
> this frame. So if the image is nil the frameBytes should be zero.

I think it needs to be disambiguate from height*width*4 which we get from metadata. In reality, all callers but the one I changed check m_image too.

[Simon Fraser (smfr)]

http://trac.webkit.org/changeset/201043