) can be used to get the decoder implementation&#39;s provider context from a decoder instance <i>decoder_inst</i>.</p>

<p>OSSL_DECODER_INSTANCE_get_input_type() can be used to get the decoder implementation&#39;s input type from a decoder instance <i>decoder_inst</i>.</p>

<p>OSSL_DECODER_INSTANCE_get_input_structure() can be used to get the input structure for the decoder implementation from a decoder instance <i>decoder_inst</i>. This may be NULL.</p>

<h1 id="RETURN-VALUES">RETURN VALUES</h1>

<p>OSSL_