On Tue, May 20, 2014 at 10:58 PM, Michal Malý <madcatxster@xxxxxxxxxxxxxxxxxx> wrote: > On Tuesday 20 of May 2014 16:16:12 simon@xxxxxxxxxxxxx wrote: >> Regarding the question of emulated vs. real effects, can we extend the API >> so that applications can know which effects are really supported, and >> enable/disable emulation somehow? > > I suppose that a few extra flags (FF_PERIODIC_EMULATED etc.) defined in > "uapi/linux/input.h" should suffice. @Dmitry: Now that we're talking about API changes, I would like to propose some additional things in the Linux FF API: - Possibility to *get* FF state variables, such as the value of the current GAIN, and the current AUTOCENTER: At the moment, only *setting* is possible. This poses a problem when implementing proper AUTOCENTER state recovery (upon closing a Windows program) in Wine, because the initial AUTOCENTER state was unknown. The same applies for GAIN. - Introduce multiple types of GAIN, apart from the current global GAIN, e.g. GAIN_CONSTANT and GAIN_DAMPER: This is mainly on request of some users, especially Logitech users: on Windows Logitech additionally supports to set the global Damper and Spring gain. Maybe it would be nicer to create a global gain for every supported Linux FF effect? Thanks, Elias -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
