[X2Go-Dev] Additional image compression algoritms?

[Pär Larsson]

Hi Uli,

No, I'm afraid not. I have limited knowledge of the inner workings x2go so there might indeed be no point in adding more modern compression methods if gui widget elements are cached. But what about other graphcs, such as images in web browsers for example? But perhaps they are not compressed the same way?

Btw: Just read a piece of disturbing news that that Xorg now is more or less abandonware. I guess everyone is expecting Wayland to replace Xorg soon, which is bad news for those of us who rely on remote desktops.  This really seems like a giant leap backwards...

//Pär

-----Ursprungligt meddelande-----
Från: Ulrich Sibiller <ulrich.sibiller at gmail.com> 
Skickat: Friday, October 23, 2020 10:46 AM
Till: Pär Larsson <par.larsson at umu.se>
Kopia: x2go-dev at lists.x2go.org
Ämne: Re: [X2Go-Dev] Additional image compression algoritms?

Adding new compression is an interesting field, indeed

The underlying nx is prepared structured in a way that make adding additional image compression algorithms quite simple. However, so far we have not implemented any other compression beyond the ones NoMachine already had, making the code very compatible.

On the other hand I am not sure how much we could gain from that. Are 10-20% smaller images worth it? Is that number reasonable at all?
Images are cached and only transferred once, if possible. So I guess we should first do some measurements to explore the potential.

Do you have any case where a better image compression could help significantly?

Uli

On Fri, Oct 23, 2020 at 9:46 AM Pär Larsson <par.larsson at umu.se> wrote:
>
> Hi!
>
> Thanks for creating x2go, I'm a big fan!
>
> In the image compression field there has been progress during recent years. Would there be a point to implementing something like jpeg xl in X2Go? As I understand, it compares favorably to standard jpeg and png in every aspect. But perhaps it would not make a big difference or be difficult?
>
> Best,
>
> Pär Larsson, Sweden
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