On Fri, 2016-08-19 at 20:24 +0300, Tanu Kaskinen wrote: > On Thu, 2016-08-18 at 07:51 -0700, James Bottomley wrote: > > I recently switched from a JBL Flip 2 which supports both HSP and > > HFP > > to an Ultimate Ears Boom 2 which is HFP only. Needless to say this > > currently means that the Ultimate Ears fails to work with > > pulseaudio because we only support HSP via the native backend. The > > first thing to note is that we can easily get HFP running in > > pulseaudio via a quick hack to switch support from HSP to HFP (see > > patch below) because if you don't negotiate protocols on HFP it > > looks pretty much like HSP for the audio stream. Unfortunately, > > doing this would break half the headsets out there which only > > support HSP, so the hack is for demo purposes only. > > > > I think the fix is to expose HFP and HSP separately as different > > pulseaudio profiles. This would also allow negotiating useful HFP > > features, like wideband audio, which HSP doesn't support. It would > > also mean that people currently using HSP would continue, even if > > they had HFP and that headsets which support both will show both in > > the PA configuration possibilities. If people are OK with this > > approach, I can produce a patch set. > > I was under the impression that supporting HFP would have to be much > more complex than that. If that one-line hack really is sufficient > for getting audio moving, I think it makes sense to add HFP support > to the native backend. I see you already went ahead and produced a > more complete patch :) I'll have a look shortly. I still think something has to be done in the negotiation. The spec definitely implies there's a mandatory rfcomm negotiation before you establish audio links. I think I've found a device that's more unforgiving with this (the Boom seems fine to establish audio links with no negotiation), so I'll complete the patch series when I get this working. The patch is still more of a demo of "is it OK that the interface appears like this" than a "this works for all known devices apply it". James
