[MSE][GStreamer] Add dump of append pipeline

[Alicia Boya García]

Pipeline dumps are very useful for debugging. Right now we have one for
PlaybackPipeline but none for AppendPipeline.

[Alicia Boya García]

Created attachment 323164 [details]
Patch

[Enrique Ocaña]

Comment on attachment 323164 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=323164&action=review

> Source/WebCore/ChangeLog:3
> +        [GTK][MSE] Add dump of append pipeline

The whole patch looks very good. I would just rename the bug to "[MSE][GStreamer] ..." because it applies to all GStreamer ports (GTK, WPE or any other in the future).

[Xabier Rodríguez Calvar]

Comment on attachment 323164 [details]
Patch

I agree with Enrique. This said, the patch is good enough and we can land it provided that you create a bug (and fix if if you can) to rework the way we subscribe and unsubscribe to signals in this and other pipelines.

First. we should subscribe with lambdas.

Second, we should unsubscribe with the by_data function instead of the by_func one. That way, as we always pass this as user_data, we'll always unsubscribe from stuff even when we haven't done it explicitly for all functions (and we won't need declared functions, lambdas will suffice).

[Alicia Boya García]

Created attachment 323165 [details]
Patch

[Xabier Rodríguez Calvar]

Comment on attachment 323165 [details]
Patch

By request of Alicia, we set cq- because she can't check the landing now.

[WebKit Commit Bot]

Comment on attachment 323165 [details]
Patch

Clearing flags on attachment: 323165

Committed r223172: <http://trac.webkit.org/changeset/223172>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.