On Fri, Sep 04, 2015 at 10:11:22AM +0200, Richard Cochran wrote: > On Thu, Sep 03, 2015 at 11:20:37PM +0000, Hall, Christopher S wrote: > > In addition to the network interface, ART will be used in the audio > > interface as well. > > We need to support the case where an audio co-processor will control the > > audio device. > > In this case, the get_ts() function supplied by the audio driver will be > > very slow > > (several milliseconds) and the result will be out of date by some fraction > > of that > > amount. > > Why does it take milliseconds to read one audio time stamp?
So what I suspect, but please correct me if I'm wrong Chris, is that a DSP will buffer and process audio signals, and only later wake up the main CPU. So by the time the CPU is made aware of the data, it's 'old'. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
