[FFmpeg-devel] [PATCH] avcodec/mips: MSA (MIPS-SIMD-Arch) optimizations for H264 lpf and weight/biweight functions

Parag Salasakar Parag.Salasakar at imgtec.com
Tue Apr 21 12:22:48 CEST 2015


These are 'optimization' patches for MSA.
We surely have plans to add runtime CPU detection code in near future as a separate patch.

Parag

-----Original Message-----
From: ffmpeg-devel-bounces at ffmpeg.org [mailto:ffmpeg-devel-bounces at ffmpeg.org] On Behalf Of Timothy Gu
Sent: Tuesday, April 21, 2015 1:59 AM
To: FFmpeg development discussions and patches
Subject: Re: [FFmpeg-devel] [PATCH] avcodec/mips: MSA (MIPS-SIMD-Arch) optimizations for H264 lpf and weight/biweight functions

On Mon, Apr 20, 2015 at 12:04 PM James Almer <jamrial at gmail.com> wrote:
>
> For that matter, do mips processors even have some sort of cpuid 
> instruction at all?


AFAIK it does. See:

-
https://github.com/torvalds/linux/blob/master/arch/mips/kernel/cpu-probe.c#L519-L520
-
https://github.com/torvalds/linux/blob/master/arch/mips/include/asm/mipsregs.h#L1176
-
https://github.com/torvalds/linux/blob/master/arch/mips/include/asm/mipsregs.h#L903-L916
<http://ffmpeg.org/mailman/listinfo/ffmpeg-devel>

Timothy
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