On Tue, Mar 10, 2009 at 6:40 PM, C R McClenaghan <chris at mcclenaghan.com>wrote: > Benny, > Based on the sample application, I was experimenting with separate volume > control over the "bridge" versus over any attached "leg". I have modified > the sample application so I can set volume on any attached port as well as > port 0. In doing this I've found that I cannot manage the volume in the > expected fashion. Applying 2.0 should double, applying 0.5 should halve. > However, it appears that these or more absolute than relative. Repeated > application of 0.5 does not reduce the volume on the second and subsequent > applications - the volume remains the same. I had expected to eventually get > an effective mute. > > I see. > The discussion with Jim lead to an absolute range of 0 to 255 and controls > that reflected that. The remainder of the discussion had to do with min/max > as macros and linker problems I had using them on the Mac. > > So, questions: Is the intent of pjmedia_conf_adjust_tx_level > and pjmedia_conf_adjust_rx_level to provide relative volume control or > absolute? Is this possibly dependent on the underlying hardware? > > It was absolute indeed. And no there's no hardware involved, unlike the (brand new :) ) audio device volume control that will be introduced in the trunk. cheers Benny -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090312/fa061d93/attachment.html>
