[FFmpeg-devel] [PATCH] Use av_clip_uint8 in swscale.

[Jason Garrett-Glaser]

2009/8/17 M?ns Rullg?rd <mans at mansr.com>:
> Jason Garrett-Glaser <darkshikari at gmail.com> writes:
>
>> 2009/8/17 M?ns Rullg?rd <mans at mansr.com>:
>>> Jason Garrett-Glaser <darkshikari at gmail.com> writes:
>>>
>>>>> But not on x86-64 or most other modern CPUs.
>>>>
>>>> Yes you can. ?It's only prohibited in shared libraries.
>>>
>>> Assuming you can arrange for the address to fit in 32 bits, yes.
>>> There are no 64-bit immediate address operands IIRC.
>>
>> Which is generally not a problem, since the ffmpeg binary still fits
>> in 4 gigabytes ;)
>
> Fitting in 4G doesn't guarantee it will be loaded at a virtual address
> lower than 4G.

Hence the reason it doesn't work in shared libraries, but does work in
static libraries.

Claiming that it doesn't work *period* is rather silly, given that
both ffmpeg and x264 make widespread usage of exactly what you're
saying doesn't work.

Dark Shikari