Function gstreamer_rtp_sys::gst_rtp_header_extension_write

pub unsafe extern "C" fn gst_rtp_header_extension_write(
    ext: *mut GstRTPHeaderExtension,
    input_meta: *const GstBuffer,
    write_flags: GstRTPHeaderExtensionFlags,
    output: *mut GstBuffer,
    data: *mut u8,
    size: size_t
) -> ssize_t

Available on crate feature v1_20 only.