On Thu, Sep 10, 2009 at 1:12 PM, Hans Verkuil<hverkuil@xxxxxxxxx> wrote: > Devin, > > If we have a media controller framework, then we might be able to use that as > an alternative way to get timestamps. See note 4 at the end of the RFC that > I posted today. If it turns out that there is no decent way of handling this > in alsa, then we have at least a way out. > > Regards, > > Hans Hello Hans, I was starting to give such an idea some thought. My concern with such an approach would be the latency between the ioctl and the read() operation. Admittedly, I'm not sure though what alternative we have if we cannot provide the data in-band. One thought I had was to treat the timestamp functionality as some sort of "advanced capability" not available with the read/write interface, but that obviously doesn't solve the ALSA problem. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
