Element pad implementation and property flag use

[George Demetriades]

Thanks for the quick reply Tim.

I hadn't realised that the implementation isn't externally accessible. This
is useful to know.

For the flags, I'm trying to change a property on a Fluendo decoding
element (the "trim" property on the "fluaacdec" element), but the code seg
faults at this point in the code. I was wondering if the problem could be
caused by the flag settings; would you have any ideas on this?

Many thanks,
George


On 25 June 2013 16:59, Tim-Philipp Müller <t.i.m at zen.co.uk> wrote:

> On Tue, 2013-06-25 at 15:52 +0100, George Demetriades wrote:
>
> Hi,
>
> > Would anyone be able to explain (or point me to a good description of)
> > how each of these features can be accessed?
> >
> >
> > To further illustrate my question, I'll copy/paste the sections I'm
> > referring to on a section of the output information on the "queue"
> > element:
> >
> >
> > Pads:
> >   SRC: 'src'
> >     Implementation:
> >       Has custom eventfunc(): gst_queue_handle_src_event
> >       Has custom queryfunc(): gst_queue_handle_src_query
> >       Has custom iterintlinkfunc():
> > gst_pad_iterate_internal_links_default
> >       Has getcapsfunc(): gst_queue_getcaps
> >       Has acceptcapsfunc(): gst_queue_acceptcaps
> >     Pad Template: 'src'
> >
> >
> > In this case, how would I use each of the custom functions?
>
> These can't be "accessed". It's just the names of the functions the
> element uses internally. I'm not really sure why that stuff is printed
> at all in gst-inspect, I don't think it's particularly useful.
>
>
> > max-size-buffers    : Max. number of buffers in the queue (0=disable)
> >                         flags: readable,
> > writable
> >
> >
> > And for this, how would I change the readable/writable flag for the
> > property?
>
> Why would you? The queue element decides that. If you are writing your
> own element, you can change this when you create the GParamSpec for the
> property in your class_init function.
>
> Cheers
>  -Tim
>
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