card
Private info for specified board
chan
Channel whose sample size will be adjusted
val
New sample size, use the AFMT_xxx
constants
Helper function for the SNDCTL_DSP_SETFMT
ioctl. OSS semantics
demand that all audio operations halt (if they are not already
halted) when the SNDCTL_DSP_SETFMT
is given.
This function halts all audio operations for the given channel
chan
, and then calls via_chan_pcm_fmt to set the audio hardware
to the new sample size, either 8-bit or 16-bit.