SNDCTL_DSP_CHANNELS
if (ioctl(hd, SNDCTL_DSP_CHANNELS, &tmp) == -1 || tmp != tcfg->nchan) {
err = ioctl(audio_fd, SNDCTL_DSP_CHANNELS, &channels);
SNDCTL_DSP_RESET, SNDCTL_DSP_SETFMT, SNDCTL_DSP_CHANNELS,
{ (uint_t)SNDCTL_DSP_CHANNELS, "SNDCTL_DSP_CHANNELS", NULL }, /* 6 */
case SNDCTL_DSP_CHANNELS: