pe, 2009-11-27 kello 13:08 +0800, Markus Rechberger kirjoitti: > It works when the user is logged in or not. > The device supports TV (+Audio), and just simple FM Radio. > It is possible to remotely access this device (when configured to do so). > We're about to release a webfrontend for it so you can tune FM radio > through a website in your homenetwork (the network configuration needs > to be enabled explicitly by the user). These are my thoughts based on this description (they may not make sense if there are additional details that make things more complicated): The product should provide kernel drivers that create a few devices: for digital TV you provide a DVB device, for FM radio you provide an ALSA capture device, and if the device also does analog TV, I'm not sure how that is usually handled - is it a v4l device for video and an ALSA capture device for sound? You apparently want to make sure that there are easy ways to actually use those devices, so you write some playback software that utilizes the standard DVB, v4l and ALSA interfaces that your kernel driver has provided. The user is free to use any other software instead of yours, thanks to the standard hardware interfaces. Your playback software shouldn't be tied in any way to your hardware, except for special hardware features that can't be exposed in a standard way (or if you really just don't want to make the software interoperable with other vendor's hardware). Let's consider local (non-networked) use first. In this case I don't see why your software should run as root. Provide a normal application that runs under the user that starts it. In the networked case your software needs to act as a server, and servers often are not associated with a user session. Here running as root makes sense, except that it doesn't - please run your server under a special-purpose user for security reasons. Anyway, here you're going to run into problems with PulseAudio. I think that reconfiguring PulseAudio to run in the system-wide mode makes sense, after notifying the user and offering a way to restore the configuration (I hope this is feasible). That's what I think, I'm not sure if it helps any... -- Tanu
