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configuring plugin priority

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Sachin Pandhare

configuring plugin priority

Hi,
is there any method by which i can prioritize plugins?
e.g. there are X, Y, Z plugins. and i want my playbin to use Y rather than other 2.

Can i use gst_plugin_feature_set_rank for this?
will it work properly?

as i read from the manual i can set any value apart from GST_RANK_NONE, GST_RANK_MARGINAL, GST_RANK_SECONDARY, GST_RANK_PRIMARY ?

Sachin

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Tim-Philipp Müller-2

Re: configuring plugin priority

On Thu, 2008-08-28 at 14:56 +0530, Sachin Pandhare wrote:

> is there any method by which i can prioritize plugins?
> e.g. there are X, Y, Z plugins. and i want my playbin to use Y rather
> than other 2.
>
> Can i use gst_plugin_feature_set_rank for this?

Yes. (Or pass the rank you want to gst_element_register in your plugin's
plugin_init function).

> will it work properly?

It should if your plugin behaves as expected.

> as i read from the manual i can set any value apart from
> GST_RANK_NONE, GST_RANK_MARGINAL, GST_RANK_SECONDARY,
> GST_RANK_PRIMARY ?

Yes, you may use e.g. GST_RANK_SECONDARY+5 or GST_RANK_PRIMARY*2 if you
want, it's just a number. Decoders/demuxers neeed to have at least a
rank of MARGINAL though to be used by playbin/decodebin.

Cheers
-Tim

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Sachin Pandhare

Re: configuring plugin priority

A playbin i think will try to use the higher rank plugin (amongst all) for a given processing.
i think init for the plugin will be called from playbin but playbin can't change the rank. is this understanding correct?

In this case, how can i use "rank changing" to make playbin to select a given plugin?

On Thu, Aug 28, 2008 at 3:36 PM, Tim-Philipp Müller <[hidden email]> wrote:

On Thu, 2008-08-28 at 14:56 +0530, Sachin Pandhare wrote:

> is there any method by which i can prioritize plugins?
> e.g. there are X, Y, Z plugins. and i want my playbin to use Y rather
> than other 2.
>
> Can i use gst_plugin_feature_set_rank for this?

Yes. (Or pass the rank you want to gst_element_register in your plugin's
plugin_init function).

> will it work properly?

It should if your plugin behaves as expected.

> as i read from the manual i can set any value apart from
> GST_RANK_NONE, GST_RANK_MARGINAL, GST_RANK_SECONDARY,
> GST_RANK_PRIMARY ?

Yes, you may use e.g. GST_RANK_SECONDARY+5 or GST_RANK_PRIMARY*2 if you
want, it's just a number. Decoders/demuxers neeed to have at least a
rank of MARGINAL though to be used by playbin/decodebin.

Cheers
-Tim

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