[#OSSL_ENCODER_to_data]
= OSSL_ENCODER_to_data
:mrdocs:

Run encoding for a context and write the result into a memory buffer.

== Synopsis

Declared in `<openssl/encoder.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OSSL_ENCODER_to_data(
    xref:OSSL_ENCODER_CTX.adoc[OSSL_ENCODER_CTX]* ctx,
    unsigned char** pdata,
    size_t* pdata_len);
----

== Return Value

1 on success, or 0 on failure (including when a caller‐supplied buffer is too small).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Configured encoder context.
| *pdata*
| Address of an output buffer pointer; if *`pdata` is NULL, a buffer is allocated with OPENSSL_malloc() and ownership transfers to the caller. If non‐NULL, *`pdata` must point to a buffer of size *`pdata_len.`
| *pdata_len*
| On input, capacity of *`pdata` when non‐NULL; on success, length of encoded data. Required (must not be NULL).
|===


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