CVSROOT: /cvs
Module name: src
Changes by: ratc...@cvs.openbsd.org 2019/09/04 23:33:57
Modified files:
sys/dev : audio.c audio_if.h
share/man/man9 : audio.9
Log message:
Add the set_blksz() and set_nblks() audio driver functions.
The first sets the block size in frames, which is necessarily common
to play and recording directions no matter the number of channels. The
second sets the number of blocks per buffer for the given
direction. Together, these two functions allow audio drivers to easily
set the block size, matching both playback and recording constraints.
The round_blocksize() didn't allow to do so because it returns the
block size in *bytes*. Since the driver doesn't know if it's called
for the play or for the record block size, it's impossible to
calculate the block size in all cases if play and record number of
channels are different.
ok mpi@
