7 Sep
2009
7 Sep
'09
7:02 p.m.
Paul Davis wrote:
something must have changed. "back in the
day", you could not possible
use the mmap API to deliver > 1 period at a time. has that changed?
Reading
http://www.alsa-project.org/alsa-doc/alsa-lib/group___p_c_m___direct.html
at least I understand that readi/writei/readn/writen are just helper
functions around mmap_begin/mmap_commit.
Essentially it should be possible to do read/modify/write as well as the
memcpy actions on mmap buffer, because former can be implemented in user
space using latter...
- Jussi