[gst-devel] gst-plugins-gl, OpenGL and stuff

[Julien Isorce]

Hi,

I am not aware of this project but it could be interesting.

The plugin I am working on has 3 elements: glgraphicmaker, glvideomaker and
glimagesink

A colorpsace converter can be made by connecting the glgraphicmaker to the
glvideomaker:

{ YUY2, UYVY, I420, YV12 } -> glgraphicmaker ! glvideomaker -> { YUY2, UYVY,
I420, YV12 }

It works fine on win32, I have to check all the possibility on linux.

Julien




2008/5/19 KwangYul Seo <kwangyul.seo at gmail.com>:

> Hi,
>
> Do you have any progress in forming a Linux+Video+OpenGL working group?
>
> Currently I am looking for a colorspace conversion solution implemented
> using OpenGL. It is not hard to find one, but most solutions use high-end
> video card extensions and do not provide any software fallback.
>
> I think we must build reusable software to do low level tasks such as image
> composition, video mixsing and colorspace conversion which are repeated over
> and over again in constructing various video applications.
>
> Regards,
> Kwang Yul Seo
>
>
> On Tue, Jan 29, 2008 at 11:59 PM, Richard Spindler <
> richard.spindler at gmail.com> wrote:
>
>> Hi,
>>
>> I had a couple of thoughts/questions/ideas that I would like to share,
>> feel free
>> to add your thoughts, doubts etc.
>>
>> What I would like to do:
>> Drafting and eventually implementing an API for abstracting image
>> processing/colorspace conversion/video display in OpenGL in a reusable
>> fashion,
>> framework and application independent, in the spirit of liboil or ffmpeg.
>>
>> My Background:
>> I am hacking the "Open Movie Editor", it does simple OpenGL based
>> compositing,
>> but it does not use gstreamer.
>>
>> What I am interested in:
>>
>> Hardware independence:
>> Currently working with OpenGL and Video is a mess, every Driver and
>> Hardware has
>> different Features and Capabilities. There is powerful hardware available
>> that
>> should be exploited. There is Mesa that has a software implementation as
>> fallback, but there are still gaps and circumstances under which certain
>> OpenGL extensions are simply not available. Somehow this needs to be
>> worked
>> around.
>>
>> Reusability:
>> Do the [ground/grunt]-work once, and enable a wide range of
>> applications/frameworks to reuse that work. I hope this would be in the
>> interest
>> of all involved parties?
>>
>> Relevant/Interesting Links:
>> http://www.mdk.org.pl/2007/11/17/gl-colorspace-conversions
>> http://macslow.thepimp.net/?p=123
>> http://en.wikipedia.org/wiki/Quartz_Composer
>>
>> I would be interested to form some kind of Linux+Video+OpenGL working
>> group,
>> with the goal of tackling on the above Problems.
>>
>> So, what do you think? Interested to join that effort?
>>
>>
>> Cheers,
>> and have fun,
>> -Richard
>>
>>
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