[Pixman] Make pixman compatible with big image

[LE GARREC Vincent]

I didn't wanted doing such a thing because :
 1) rowstride will never have a value higher than 2^31 so you will
definitely lose 4 octets. But okay, nobody cases about it.
 2) I didn't check that bits_image is private so I wanted avoid a breakage.
So, you're right.
 3) It still needs lots of change because if I change bits_image.rowstride
in size_t, I will have to change also lots of variable (like the uint32_t
byte_stride of the function arm_simd_fill) and parameters of function (like
mips_dspr2_fill). And this is just one example but I think there's plenty.

So I think that both ways need lots of work. With my solution, I just have
to find every variable which have "stride" in its name and cast every
multiplication.


2013/9/9 Bill Spitzak <spitzak at gmail.com>

> It looks like making bits->rowstride into a size_t would be a better
> solution than doing this casting?
>
> LE GARREC Vincent wrote:
>
>> Dear,
>>
>> I tried to create a very big image (height*stride > 2^31) but it looks
>> like there's some difficulties. I reported it (
>> https://bugs.freedesktop.org/**show_bug.cgi?id=69014<https://bugs.freedesktop.org/show_bug.cgi?id=69014>)
>> but the solution needs to change more than just few lines.
>>
>> Does someone could review the patch I made for one file (
>> https://bugs.freedesktop.org/**attachment.cgi?id=85448<https://bugs.freedesktop.org/attachment.cgi?id=85448>)
>> ? If it's okay, I'll make a patch for all files.
>>
>> And after that, I'll make another patch for cairo that have exactly the
>> same problem.
>>
>> Regards,
>> Vincent LE GARREC
>>
>>
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