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BrettRD / ros-gst-bridge

a bidirectional ros to gstreamer bridge and utilities for dynamic pipelines
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Feature request: rostextsrc element #19

Closed clydemcqueen closed 3 years ago

clydemcqueen commented 3 years ago

Brett, what do you think about adding a rostextsrc element to this package? Proposed usage:

gst-launch-1.0 -v rostextsrc topic="/string" ! txt. videotestsrc ! textoverlay name=txt ! autovideosink

I started in on this to understand how it might work. It compiles & is visible with gst-inspect-1.0, but it doesn't work yet. Let me know if you're interested in a PR. https://github.com/clydemcqueen/ros-gst-bridge/tree/clyde_rostext

Thanks, /Clyde

BrettRD commented 3 years ago

I've been thinking about this element for a while and I'd love to merge yours into the repo!

It's close enough to being viable as the opaque block that I wanted to try adding the ANY caps to it but I couldn't figure out how to do it nicely.

Make a pull request, it looks like you're only running into trouble at caps negotiation. The sinks are a lot easier to write, and that'll add pocketsphinx to the list of turn-key features.

clydemcqueen commented 3 years ago

Hey, Brett: I got negotiation working, but now I'm running into problems with timestamps. I submitted an early PR, we can shift the conversation there. Thanks! https://github.com/BrettRD/ros-gst-bridge/pull/20

BrettRD commented 3 years ago

The text src is terrific as is, let's open some new issues to track usability problems