pub unsafe extern "C" fn switch_core_session_get_payload_code(
session: *mut switch_core_session_t,
type_: switch_media_type_t,
iananame: *const c_char,
rate: u32,
fmtp_in: *const c_char,
ptP: *mut switch_payload_t,
recv_ptP: *mut switch_payload_t,
fmtpP: *mut *mut c_char,
) -> switch_status_t