[Request] Expose Vulkan and vo_dmabuf_wayland in libmpv (for third-party clients)

[r2rX]

Hello there,

I've been using mpc-qt as the client/player (using libmpv) for viewing content. I inquired with its author if it was possible to enable Vulkan & vo_dmabuf_wayland support and he replied with the following. To summarize, if libmpv exposed these features directly then it may be possible to enable support in mpc-qt without it being complicated for the project.

Expected behavior of the wanted feature

If Wayland and vo_dmabuf_wayland are exposed via libmpv, third-party clients can incorporate the features much easier.

Alternative behavior of the wanted feature

I'm not sure what that would be but @cmdrkotori, or you wonderful devs, would have a better idea about this than I. :)

[benjamin-otte]

Being able to access dmabufs would be useful for integrating with toolkit like GTK, which has recently gained support for video passthrough on Wayland.

[brys0]

Is there any update from the team on this, or any specific blockers preventing such a feature?

[Dudemanguy]

There is no way for this to work other than writing a totally new api that uses subsurfaces. It's not a trivial change and even then it would require any client to write a ton of new wayland-specific code. So probably not happening anytime soon.

To be clear, you can use vo_dmabuf_wayland in libmpv like any other VO but there is no render API or embedding support. The render API is still opengl-only.

[brys0]

There is no way for this to work other than writing a totally new api that uses subsurfaces. It's not a trivial change and even then it would require any client to write a ton of new wayland-specific code. So probably not happening anytime soon.

To be clear, you can use vo_dmabuf_wayland in libmpv like any other VO but there is no render API or embedding support. The render API is still opengl-only.

Ah, alright. Thank you for the info! I'll have to figure something else out then.

[tbertels]

@Dudemanguy mentioned libwlembed as a potential solution in #12627 (comment).