curl-w32/docs/libcurl/opts/CURLOPT_INTERLEAVEDATA.md

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---
c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
SPDX-License-Identifier: curl
Title: CURLOPT_INTERLEAVEDATA
Section: 3
Source: libcurl
See-also:
- CURLOPT_INTERLEAVEFUNCTION (3)
- CURLOPT_RTSP_REQUEST (3)
---
# NAME
CURLOPT_INTERLEAVEDATA - pointer passed to RTSP interleave callback
# SYNOPSIS
~~~c
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_INTERLEAVEDATA, void *pointer);
~~~
# DESCRIPTION
This is the userdata *pointer* that is passed to
CURLOPT_INTERLEAVEFUNCTION(3) when interleaved RTP data is received. If
the interleave function callback is not set, this pointer is not used
anywhere.
# DEFAULT
NULL
# PROTOCOLS
RTSP
# EXAMPLE
~~~c
struct local {
void *custom;
};
static size_t rtp_write(void *ptr, size_t size, size_t nmemb, void *userp)
{
struct local *l = userp;
printf("my pointer: %p\n", l->custom);
/* take care of the packet in 'ptr', then return... */
return size * nmemb;
}
int main(void)
{
struct local rtp_data;
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_INTERLEAVEFUNCTION, rtp_write);
curl_easy_setopt(curl, CURLOPT_INTERLEAVEDATA, &rtp_data);
curl_easy_perform(curl);
}
}
~~~
# AVAILABILITY
Added in 7.20.0
# RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.