Em Thu, 27 Aug 2009 13:15:12 -0700 Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> escreveu: > On Thu, Aug 27, 2009 at 09:36:36PM +0300, Ville Syrjälä wrote: > > On Thu, Aug 27, 2009 at 04:57:10AM -0300, Mauro Carvalho Chehab wrote: > > > After years of analyzing the existing code and receiving/merging patches > > > related to IR, and taking a looking at the current scenario, it is clear to me > > > that something need to be done, in order to have some standard way to map and > > > to give precise key meanings for each used media keycode found on > > > include/linux/input.h. > > > > > > Just as an example, I've parsed the bigger keymap file we have > > > (linux/media/common/ir-common.c). Most IR's have less than 40 keys, most are > > > common between several different models. Yet, we've got almost 500 different > > > mappings there (and I removed from my parser all the "obvious" keys that there > > > weren't any comment about what is labeled for that key on the IR). > > > > > > The same key name is mapped differently, depending only at the wish of the > > > patch author, as shown at: > > > > > > http://linuxtv.org/wiki/index.php/Ir-common.c > > > > > > It doesn't come by surprise, but currently, almost all media player > > > applications don't care to properly map all those keys. > > > > > > I've tried to find comments and/or descriptions about each media keys defined > > > at input.h without success. Just a few keys are commented at the file itself. > > > (or maybe I've just seek them at the wrong places). > > > > > > So, I took the initiative of doing a proposition for standardizing those keys > > > at: > > > > > > http://linuxtv.org/wiki/index.php/Proposal > > > > I welcome this effort. It would be nice to have some kind of consistent > > behaviour between devices. But just limiting the effort to IR devices > > doesn't make sense. It shouldn't matter how the device is connected. > > > > FASTWORWARD,REWIND,FORWARD and BACK aren't very clear. To me it would > > make most sense if FASTFORWARD and REWIND were paired and FORWARD and > > BACK were paired. I actually have those two a bit confused in > > ati_remote2 too where I used FASTFORWARD and BACK. I suppose it should > > be REWIND instead. > > > > Also I should probably use ZOOM for the maximize/restore button (it's > > FRONT now), and maybe SETUP instead of ENTER for another. It has a > > picture of a checkbox, Windows software apparently shows a setup menu > > when it's pressed. > > > > There are also a couple of buttons where no keycode really seems to > > match. One is the mouse button drag. I suppose I could implement the > > drag lock feature in the driver but I'm not sure if that's a good idea. > > It would make that button special and unmappable. Currently I have that > > mapped to EDIT IIRC. > > Unmappable keys should probably emit KEY_UNKNOWN. When I last talked > with Richard Hughes there was an idea that userspace may detect > KEY_UNKNOWN and alert user that key needs to be mapped since it lacks > standard assignment. EV_MSC/MSC_SCAN was supposed to aid in fuguring out > what key it was so that usersoace can issue proper EVIOCSKEYCODE... This seems to be a good idea, for those keys that aren't at rc5 spec. > > > > The other oddball button has a picture of a stopwatch (I think, it's > > not very clear). Currently it uses COFFEE, but maybe TIMER or something > > like that should be added. The Windows software's manual just say it > > toggles TV-on-demand, but I have no idea what that actually is. > > > > I'd start by looking at HID usage tables and borrowing [missing] > definitions from there. Patches commenting on intended use of input > keycodes are always welcome. After we've agreed on a common base, I'll send a patch documenting the keys as used on IR. It would be good if you could take some time and see if I'm not abusing of any key at the current proposal[1]. Some of the used keys may already be mapped to do something else at kde, gnome or x11. [1] http://linuxtv.org/wiki/index.php/Proposal Cheers, Mauro -- 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
