OSSL_DECODER_settable_ctx_params() returns an <a href="../man3/OSSL_PARAM.html">OSSL_PARAM(3)</a> array of parameter descriptors.</p>

<p>OSSL_DECODER_CTX_set_params() attempts to set parameters specified with an <a href="../man3/OSSL_PARAM.html">OSSL_PARAM(3)</a> array <i>params</i>. These parameters are passed to all decoders that have been added to the <i>ctx</i> so far. Parameters that an implementation doesn&#39;t recognise should be ignored by it.</p>

<p>OSSL_DECODER_CTX_free() frees the given contex