pub unsafe extern "C" fn switch_buffer_peek(
buffer: *mut switch_buffer_t,
data: *mut c_void,
datalen: switch_size_t,
) -> switch_size_tpub unsafe extern "C" fn switch_buffer_peek(
buffer: *mut switch_buffer_t,
data: *mut c_void,
datalen: switch_size_t,
) -> switch_size_t