Re: [Ksummit-discuss] Including images on Sphinx documents

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On Thu, 17 Nov 2016, Arnd Bergmann <arnd@xxxxxxxx> wrote:
> On Wednesday, November 16, 2016 6:26:33 PM CET Mauro Carvalho Chehab wrote:
>> Em Wed, 16 Nov 2016 17:03:47 +0100
>> Arnd Bergmann <arnd@xxxxxxxx> escreveu:
>> 
>> > On Tuesday, November 8, 2016 8:50:36 AM CET Mauro Carvalho Chehab wrote:
>> > > It basically calls ImageMagick "convert" tool for all png and
>> > > pdf files currently at the documentation (they're all at media,
>> > > ATM).  
>> > 
>> > It looks like we still need to find a way to address the .gif files
>> > though, as they have the same problem as the .pdf files.
>> 
>> Actually, my last patch series removed all *.pdf images and converted
>> all .gif files under Documentation/media to PNG[1]. I also replaced some
>> images by .svg, but the remaining ones are more complex. I'm even not
>> sure if it makes sense to convert a few of them to vectorial graphics,
>> like on this case:
>> 	https://mchehab.fedorapeople.org/kernel_docs/media/_images/selection.png
>> 
>> >
>> > During the kernel summit, I looked around for any binary files in
>> > the kernel source tree, and except for the penguin logo, they are
>> > all in Documentation/media/uapi/v4l/, but they are not all pdf
>> > files, but also .png and .pdf.
>> 
>> From what I understood from Linus, his problem is to carry on a
>> non-editable file at the Kernel tree. With that sense, a PNG file
>> is OK, as it is editable.
>
> [adding Linus for clarification]
>
> I understood the concern as being about binary files that you cannot
> modify with classic 'patch', which is a separate issue.

Also reported at [1]. So kernel.org has patches that you can't apply
with either classic patch or git apply. They could at least be in git
binary format so you could apply them with *something*. Of course, not
having binaries at all would be clean.

BR,
Jani.


[1] http://lkml.kernel.org/r/02a78907-933d-3f61-572e-28154b16b9e5@xxxxxxxxxx

>
>> I had, in the past, problems with binary contents on either Mercurial
>> or git (before migrating to git, we used Mercurial for a while).
>> So, before Kernel 4.8, those .pdf, .png (and .gif) images were uuencoded,
>> in order to avoid troubles handling patches with them.
>> 
>> Nowadays, I don't see any issue handling binary images via e-mail or via git.
>
>
>
>> Btw, with that regards, SVG images are a lot worse to handle, as a single
>> line can easily have more than 998 characters, with makes some email
>> servers to reject patches with them. So, at the version 3 of my patch 
>> series, I had to use inkscape to ungroup some images, and to rewrite their
>> files, as otherwise, two patches were silently rejected by the VGER 
>> server.
>
> Ok, good to know.
>
>> [1] The reason to convert to PNG is that it means one less format to be
>> concerned with. Also, it doesn't make much sense to use two different
>> formats for bitmap images at the documentation.
>
> I just tried converting all the .gif and .png files to .pnm. This would
> make the files patchable but also add around 25MB to the uncompressed
> kernel source tree (118kb compressed, compared to 113kb for the .gif and
> .png files). This is certainly worse than the uuencoded files you
> had before
>
> 	Arnd
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> Ksummit-discuss mailing list
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> https://lists.linuxfoundation.org/mailman/listinfo/ksummit-discuss

-- 
Jani Nikula, Intel Open Source Technology Center
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