On Thu, 2010-07-29 at 21:35 +0200, Christoph Bartelmus wrote: > Hi! > > Maxim Levitsky "maximlevitsky@xxxxxxxxx" wrote: > [...] > >>>>> Could you explain exactly how timeout reports work? > [...] > >>> So, timeout report is just another sample, with a mark attached, that > >>> this is last sample? right? > >> > >> No, a timeout report is just an additional hint for the decoder that a > >> specific amount of time has passed since the last pulse _now_. > >> > >> [...] > >>> In that case, lets do that this way: > >>> > >>> As soon as timeout is reached, I just send lirc the timeout report. > >>> Then next keypress will start with pulse. > >> > >> When timeout reports are enabled the sequence must be: > >> <pulse> <timeout> <space> <pulse> > >> where <timeout> is optional. > >> > >> lircd will not work when you leave out the space. It must know the exact > >> time between the pulses. Some hardware generates timeout reports that are > >> too short to distinguish between spaces that are so short that the next > >> sequence can be interpreted as a repeat or longer spaces which indicate > >> that this is a new key press. > > > Let me give an example to see if I got that right. > > > > > > Suppose we have this sequence of reports from the driver: > > > > 500 (pulse) > > 200000 (timeout) > > 100000000 (space) > > 500 (pulse) > > > > > > Is that correct that time between first and second pulse is > > '100200000' ? > > No, it's 100000000. The timeout is optional and just a hint to the decoder > how much time has passed already since the last pulse. It does not change > the meaning of the next space. its like a carrier report then I guess. Its clear to me now. So, I really don't need to send/support timeout reports because hw doesn't support that. I can however support timeout (LIRC_SET_REC_TIMEOUT) and and use it to adjust threshold upon which I stop the hardware, and remember current time. I can put that in generic function for ene like hardware (hw that sends small packs of samples very often) Best regards, Maxim Levitsky -- 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
