On Sun, Oct 16, 2005 at 01:35:47PM -0500, Dmitry Torokhov wrote:
> On Saturday 15 October 2005 16:39, [email protected] wrote:
> > HI
> >
> > Force feedback envelope struct in input.h
> > for periodic events is incomplete.
> >
> > struct ff_envelope {
> > __u16 attack_length; /* Duration of attack (ms) */
> > __u16 attack_level; /* Level at beginning of attack */
> > __u16 fade_length; /* Duration of fade (ms) */
> > __u16 fade_level; /* Level at end of fade */
> > };
> >
> > The envelope consists of:
> > 1. Attack level (Level at beginning of attack)
> > 2. Attack time
> > 3. Sustain level (Level at end of attack and beginning of fade)
> > 4. Sustain time
> > 5. Fade level (Level at the end of fade)
> > 6. Fade time
> >
> > If I want to implement proper envelope I propose something like this:
> >
> > struct ff_envelope {
> > __u16 attack_length; /* Duration of attack (ms) */
> > __u16 attack_level; /* Level at beginning of attack */
> > __u16 sustain_length; /* Duration of sustain (ms) */
> > __u16 sustain_level; /* Sustain Level at end of attack and beginning of fade */
> > __u16 fade_length; /* Duration of fade (ms) */
> > __u16 fade_level; /* Level at end of fade */
> > };
>
> You might want to talk to Vojtech about this (CC-ed).
Your proposal seems reasonable. Please send me a patch that adds the
sustain members to the envelope, and uses it in some driver, while
making sure existing binary-only apps (if there are any) don't break.
--
Vojtech Pavlik
SuSE Labs, SuSE CR
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
