On Monday 09 July 2007 20:47, Christopher Davis wrote: > http://people.freebsd.org/~cg/template.c > > Thought I would take a look at the audio driver template as > part of my task to modernize drivers, soc2007. I would simplify > the read and write functions to avoid using the bus tag and > handle, but I'm not sure what else to do to bring it up to date. > > How else can it be improved?
Regarding echo cancelling, you should add some code that time-stamps the audio data, and computes the current number of bytes in the RX/TX FIFOs! Look at the exported functions in the Echo Canceller for I4B: http://www.turbocat.net/~hselasky/isdn4bsd/sources/src/sys/i4b/layer1/i4b_echo_cancel.c The echo canceller above is a work in progress. --HPS _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"