Holger Waechtler wrote: > Hi Alessio, > > the current API defines signal strength and SNR as values in 10^-6 dB or > dBm. This was originally defined by Nokia but is not implemented by most > frontend drivers since the hardware delivers a value between 0...127, > 0...255 or 0...65536 and most doc's don't specify how these map onto the > logarithmic scale.
ja, I've released an experimental patch for vdr, and many users told they had very very strange values, depending on the revision of the card, etc... > In most cases you want the limited range anyway. We are working on some > changes in the driver, I'm currently porting some of the frontend > drivers to a new API, where we defined both signal strength and SNR to > be kind of linear within 0...65536. I'll post a RFC about the frontend > and DiSEqC API changes next days on this list, but until the > implementations go into the public driver we still need some time. oh, very interesting!! I would be glad to take part to the discussion. > We can't simply change the API because it was submitted as part of the > LinuxTV standard definition; we'll probably have to release a version 2 > of the API. Suggestions about changes are welcome. ok, thank you bye Alessio Sangalli -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
