[#OSSL_DECODER_gettable_params]
= OSSL&lowbar;DECODER&lowbar;gettable&lowbar;params
:mrdocs:

Return descriptors for parameters that can be retrieved from a decoder&period;

== Synopsis

Declared in `&lt;openssl&sol;decoder&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:OSSL_PARAM.adoc[OSSL&lowbar;PARAM] const*
OSSL&lowbar;DECODER&lowbar;gettable&lowbar;params(xref:OSSL_DECODER.adoc[OSSL&lowbar;DECODER]* decoder);
----

== Return Value

OSSL&lowbar;PARAM array of gettable parameter descriptors, or NULL if none&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *decoder*
| Decoder to query&period;
|===


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