[gst-devel] Custom signal/event handling for a bin

[Stefan Kost]

Am 04.12.2009 07:17, schrieb rmkart:
> 
> Hi,
> So you mean that object properties and action-signals can happen in
> application thread while the data flow will happen parallely in streaming
> thread, While in case of event the processing happens in the same streaming
> thread as that of data flow?
> 
> I'm thinking of pausing the pipeline and then send the events which will do
> the plugin manipulation, if the pipeline is paused will the events be
> processed as the streaming thread will be in waiting state and it might not
> process the data flow and events as well.
> Correct me if I'm wrong.
> Thanks,
> RK
> 
> Stefan Kost wrote:
>>
>> Am 30.11.2009 16:38, schrieb rmkart:
>>>
>>> Hi,
>>> I'm new to GST. I want a bin that can handle custom event/signals.
>>> Let's say my pipeline is in PLAYING state and now I want to unlink some
>>> plugins and add some new plugins, this I want to achieve through a custom
>>> event/signal from application to pipeline.
>>> I want application to be agnostic of internal plugin manipulations, so I
>>> will send only signal/events to my bin which will take care of plugin
>>> manipulation.
>>> Whether this is the right approach to do it or is there any other
>>> approach
>>> for this.
>>> Thanks,
>>> RK

If you pause the pipeline anyway, juts use a gobject-property or an action
signal to request the new configuration.

Stefan

>>
>> Your description is a bit vague. But anyway you can write a custom bin
>> (subclass
>> GstBin) and there do what you want. In that regard it does not matter if
>> you use
>> a object property on the bin, an action-signal or an event to ask the bin
>> to
>> change the internal graph. Events have the advantage that they can be
>> synced
>> with the data flow.
>>
>> Stefan
>>
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>