On Tuesday 15 Nov 2005 13:13, Andrew de Quincey wrote:
> Hi, this patch allows frontends (and the user) to select from one of
> several different tuning algorithms. The patch adds four possibilities:
>
> 1) SW - the current dvb-kernel software zigzag code.
> 2) HW - the hardware supports zigzagging internally (e.g. DST), so use that
> as it will be faster.
> 3) ADAPTIVE - frontend-specific code exploiting frontend-specific features.
> 4) SIMPLE - just set the frontend once and do nothing else (e.g. for
> frequency scanner apps).
Spotted a slight bug in the code - add the fepriv->state = line as below:
/* in SIMPLE/HW mode, we just set the frontend when asked and leave it alone
*/
if ((fepriv->cur_tune_algo == FE_TUNE_ALGO_SIMPLE) ||
(fepriv->cur_tune_algo == FE_TUNE_ALGO_HW)) {
if (fepriv->state & fepriv->state & FESTATE_RETUNE) {
if (fe->ops->set_frontend)
fe->ops->set_frontend(fe, &fepriv->parameters);
fepriv->state = FESTATE_TUNED;
}
delay = 3*HZ;
quality = 0;
continue;
}
Otherwise it'll retune every 3 seconds (which isn't really what we want! :)
