[FFmpeg-devel] [PATCH] avfilter/vf_convolution: add 16-column operation for filter_column() to prepare for x86 SIMD.

[徐鋆]

I'm sorry not to reply in time.

The performance of this C code is about 10% better than the existing C code.

It will have a bigger improvement after X86 SIMD optimizations.

Xu Jun

----- 原始邮件 -----
发件人: "Carl Eugen Hoyos" <ceffmpeg at gmail.com>
收件人: "FFmpeg development discussions and patches" <ffmpeg-devel at ffmpeg.org>
发送时间: 星期四, 2019年 11 月 28日 上午 12:19:44
主题: Re: [FFmpeg-devel] [PATCH] avfilter/vf_convolution: add 16-column operation for filter_column() to prepare for x86 SIMD.

Am Mi., 27. Nov. 2019 um 15:56 Uhr schrieb <xujunzz at sjtu.edu.cn>:

> From: Xu Jun <xujunzz at sjtu.edu.cn>
>
> In order to add x86 SIMD for filter_column(), I write a C function which processes 16 columns at a time.

How does this perform compared to the existing C code?

Carl Eugen
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-- 
敬颂钧安, 
徐鋆 
电子信息与电气工程学院 
上海交通大学 
邮箱：xujunzz at sjtu.edu.cn 
地址：上海市闵行区东川路800号 

Yours sincerely, 
Xylem（Jun Xu） 
School of Electronic, Information and Electrical Engineering 
Shanghai Jiao Tong University 
Email: xujunzz at sjtu.edu.cn 
No. 800, Dongchuan Road, Minhang District, Shanghai 200240, China 

宜しくお愿いたします 
徐鋆 
電子情報と電気工程学院 
上海交通大学 
メールアドレス ：xujunzz at sjtu.edu.cn 
住所：上海市閔行区ドンチュワンルー800号