Laurent Pinchart wrote: > On Tuesday 14 December 2010 14:31:55 Clemens Ladisch wrote: > > Laurent Pinchart wrote: > > > On Monday 13 December 2010 17:10:51 Clemens Ladisch wrote: > > >> EXT_SPEAKER also includes headphones; there might be made a case for > > >> having those as a separate subtype. > > > > > > Shouldn't headphones be represented by an EXT_JACK_ANALOG ? > > > > Headphone jacks are jacks; there are also USB headphones. > > So EXT_SPEAKER are speakers not connected through a jack (USB, internal > analog, ...) ? Yes. When there is jack, the driver often does not know what is connected. > > >> EXT_BROADCAST represents devices like TV tuners, satellite receivers, > > >> cable tuners, or radios. > > > > > > There's clearly an overlap with V4L here. > > > > These come from the USB audio spec. Video devices are indeed likely to > > be more detailed than just a single audio source. :) > > Does EXT_BROADCAST represent the TV tuner (or satellite receiver, cable tuner, > radio tuner, ...) itself, or the connection between the tuner and the rest of > the device ? Most TV tuner are currently handled by V4L2 and would thus turn > up as V4L2 subdevs (I'm not sure if that's what we want in the long term, but > it's at least the current situation). >From the point of view of an audio device, this would be just some audio source, much like a connector. We don't need this if there is some better V4L entitity that the USB audio entity can be mapped to. Regards, Clemens -- 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
