Le jeudi 15 mars 2018 à 10:39 +0000, Bob Ham a écrit : > Hi all, > > I'm working on the ability to make a phone call with the Librem 5 phone. > I've started working on a Telepathy-based dialer and call handler. The > goal at Purism is to work upstream and we use GNOME as the desktop > environment in our distribution, PureOS, which will be what the Librem 5 > runs. There's no existing dialer in GNOME so the assumption underlying > this work is that it will end up as "GNOME Dialer". I'm sending this > email now to check in and get feedback on my approach.
Note that this is not entirely true, there is a dialer in Empathy already. It's most likely a miss-fit for a Phone UI (just like most Gnome application if left unmodified). > > There was a long discussion⁰ last year on this mailing list regarding > replacing Telepathy with Matrix and the thread also included a lot of > general discussion of Telepathy and communication. In that discussion > there were plenty of calls for Telepathy to die so I feel I should > justify my approach. > > Firstly, there are only two existing free GSM middleware frameworks: > freesmartphone.org¹ (FSO) and oFono². FSO is actually a whole > smartphone middleware, including not just telephony but contacts, > alarms, audio, battery and so on. We are explicitly targetting the > GNOME platform which already provides a lot of (all of?) what FSO does. > We cannot use FSO or else we would conflict with our goal of building on > the GNOME platform. Hence, we must use oFono. oFono is also the best choice for telephony. It has been extensively tested and used in read-world use cases. It also handles well the Bluetooth Handset and implement all the features you car integration needs. Though, it might not have a great upstream at the moment (non have) > > Both Telepathy and oFono expose APIs over D-Bus so regardless of whether > we use oFono natively or through telepathy-ring, we'll be writing a > GNOME D-Bus application. By building a dialer based on Telepathy we get > the tantalising possibility of supporting SIP cheaply as there are SIP > connection managers for Telepathy. Telepathy Ring was justified by the "single UI" requirement to aggregate GSM / SIP / XMPP (which included Google and Facebook back then) / IRC but also proprietary stuff like Skype. As of today's reality, Matrix native API is missing, and only GSM/SIP/IRC remains (well haze, for libpurple, but a bit limited), from which only GSM and SIP have strong common needs. That's why Telepathy is being criticized, as it's very complex for what it brings. A simpler abstractions would make everyone's life easier. > > By using telepathy-ring we also open the possibility of having deep > integration of SMS and IM systems. That's not the immediate focus but > it's something to bear in mind. > > When I read through the Telepathy Developer's Manual, I thought "this is > awesome!" However, having got to grips with a lot of the complexity, I > can see why there has been so little traction and why a lot of people in > the aforementioned mailing list thread wanted it to die. That said, I > still think Telepathy is awesome and it still seems like the most > sensible choice for our immediate need of building telephony programs > for the Librem 5. It was designed for a phone, and made useful to the desktop. > > My colleague François Téchené recently wrote a blog post³ proposing a > unified UX using a "feature"-based approach rather than an > application-based approach. This proposal comes from the ideas of > Ethical Design⁴. The technological underpinnings of this UX are already > largely extant in Telepathy. > > The future that I'm looking towards is one where the Librem 5 is a > shining beacon of harmonious Telepathy-based telecommunication magic, > providing unified interfaces to various different messaging and > audio/video telephony systems including Matrix, GSM, SIP and XMPP, > complete with encryption. Maybe you want to finish the Telepathy 1.0 spec then ? It's a major cleanup that go abandoned when Nokia Open Source went down. All the code is still available. It removes the legacy/backward compatibility, removes the duplicated interface (specially for Telephony, as there was couple of rewrites of this interface, and we ended up supported multiple versions in Empathy). > > I understand that this is no small undertaking, to say the least. We > will not achieve this state when the Librem 5 first ships. However, > over time I would like us to work towards that harmonious magic. > > Thoughts are most welcome. > > Thanks, > > Bob > > > ⁰ > https://mail.gnome.org/archives/desktop-devel-list/2017-August/thread.html#00112 > https://mail.gnome.org/archives/desktop-devel-list/2017-September/thread.html#00047 > ¹ http://www.freesmartphone.org/ > ² https://01.org/ofono > ³ https://puri.sm/posts/librem5-progress-report-8/ > ⁴ https://2017.ind.ie/ethical-design/ > > _______________________________________________ > desktop-devel-list mailing list > desktop-devel-list@gnome.org > https://mail.gnome.org/mailman/listinfo/desktop-devel-list
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