pub unsafe extern "C" fn snd_spcm_init_duplex(
playback_pcm: *mut snd_pcm_t,
capture_pcm: *mut snd_pcm_t,
rate: c_uint,
channels: c_uint,
format: snd_pcm_format_t,
subformat: snd_pcm_subformat_t,
latency: snd_spcm_latency_t,
_access: snd_pcm_access_t,
xrun_type: snd_spcm_xrun_type_t,
duplex_type: snd_spcm_duplex_type_t,
) -> c_int