would my app be possible with gstreamer?

[mariano-26]

Hi,

Following your suggestion at apps section in the page, I write to ask if the app that we have in mind is possible with gstreamer.

The idea is to manage data and media from different sources, in a graph where each element/node could be scripted, for example with conditions for triggering them depending on pipeline global variables.

For example, depending on what happens inside an element, to transform and send the result data to one source pad or another (branching) or keep on processing the same element till it receives a signal/event from outside (conditional looping).

Being able to receive events from this sources, would also be really indispensable, but as far as I know, that's completely possible.

We would also like to "talk" to different pieces of hardware, each one with an specific protocol, for example copperlan, osc, midi, ad-hoc serial-based protocols and so on. The app would play as a translator and mapper between all these heterogeneous data.

We also have kind of a big requirement on using Qt as the GUI framework, I guess that would be also possible, but I could not find any non-trivial resources on this subject.

I would really appreciate your help

thanks in advance

mariano

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[Stefan Sauer]

hi,

Am 09.12.2009 19:55, schrieb mariano:

> Hi,
> Following your suggestion at apps section
> <http://gstreamer.freedesktop.org/apps/> in the page, I write to ask if
> the app that we have in mind is possible with gstreamer.
>
> The idea is to manage data and media from different sources, in a graph
> where each element/node could be scripted, for example with conditions
> for triggering them depending on pipeline global variables.
> For example, depending on what happens inside an element, to transform
> and send the result data to one source pad or another (branching) or
> keep on processing the same element till it receives a signal/event from
> outside (conditional looping).
> Being able to receive events from this sources, would also be really
> indispensable, but as far as I know, that's completely possible.

Its still quite vague what you want to do :/ What kind of processing? What does
it mean to "keep on processing the same element" and so on.

>
> We would also like to "talk" to different pieces of hardware, each one
> with an specific protocol, for example copperlan, osc, midi, ad-hoc
> serial-based protocols and so on. The app would play as a translator and
> mapper between all these heterogeneous data.

This is something that you need to implement. Also be aware that even though gst
is format agnostic, I don't know of examples that actually send midi/osc from
element to element (in case that is what you want to do). It should be perfectly
fine to hookup osc to parameters on elements.

>
> We also have kind of a big requirement on using Qt as the GUI framework,
> I guess that would be also possible, but I could not find any
> non-trivial resources on this subject.

Yes, having some qt examples (especially how to handle the glib mainloop) would
be nice to have - imho gst-plugin-gl has some qt example.

Stefan

>
> I would really appreciate your help
> thanks in advance
>
> mariano
>
>
>
>
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