[Ffmpeg-devel] ffmpeg for xscale

[Måns Rullgård]

"Enas Ashraf Ahmed Ibrahim" <inas at mcit.gov.eg> writes:

> Hi,
>
> I'd like to ask about ffmpeg for xscale.
>
> I have a board called X-Hyper270-TKU based on Intel PXA270 XScale
> processor.
>
> This is an ARMv5TE, so is there any special configurations needed to
> make ffmpeg make use  of the enhanced dsp instructions, given that in
> the configuration file both ARMv4 and ARMv5 are treated equally.

[...]

> Also, the board has Intel Wireless MMX technology for high performance
> multimedia, I also need to know what configurations are needed to use
> mmx given that in the configuration file mmx is only enabled in the case
> of x86 processors only.

The XScale has an iwmmxt unit, which is similar to x86 mmx, but
obviously not assembler compatible.  FFmpeg has (some) support for
iwmmxt, which should be auto-detected in configure.  You might need to
add something like -mcpu=xscale to your cflags.

-- 
M?ns Rullg?rd
mans at mansr.com