Review Request 110649: add kimgio WebP image format plugin

[Martin Koller]

> On May 26, 2013, 2:15 p.m., Fredrik Höglund wrote:
> > kimgio/webp.cpp, line 58
> > <http://git.reviewboard.kde.org/r/110649/diff/1/?file=146351#file146351line58>
> >
> >     This is not particularly efficient. WebPDecodeBGRAInto() can decode directly into a QImage without using an intermediate buffer.

As far as I understand the QImage documentation, I can not use this: "You cannot use the uchar* pointer directly, because the pixel format depends on the byte order on the underlying platform. Use qRed(), qGreen(), qBlue(), and qAlpha() to access the pixels."

I understood it as: WebPDecodeRGBA() delivers always 4 consecutive bytes as RGBA, regardless of the endianess of the platform, but QImage::bits() returns a pointer to the data which contains the bytes in the order of the platform, which might be different than what WebPDecodeRGBA() delivers.


- Martin


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On May 26, 2013, 12:20 p.m., Martin Koller wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/110649/
> -----------------------------------------------------------
> 
> (Updated May 26, 2013, 12:20 p.m.)
> 
> 
> Review request for KDE Runtime.
> 
> 
> Description
> -------
> 
> This patch adds support for the new Google invented WebP image format. See https://developers.google.com/speed/webp/?hl=ru
> 
> This is what was submitted before in https://git.reviewboard.kde.org/r/106300/ but it was suggested to move it to kde-runtime
> 
> 
> Diffs
> -----
> 
>   kimgio/webp.h PRE-CREATION 
>   kimgio/webp.xml PRE-CREATION 
>   kimgio/webp.desktop PRE-CREATION 
>   kimgio/CMakeLists.txt PRE-CREATION 
>   kimgio/webp.cpp PRE-CREATION 
> 
> Diff: http://git.reviewboard.kde.org/r/110649/diff/
> 
> 
> Testing
> -------
> 
> some KDE apps, including read/write with a modified kolourpaint (to be able to change the quality)
> 
> 
> Thanks,
> 
> Martin Koller
> 
>

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