[vdr] Re: tech.diff

[Alessio Sangalli <alesan@manoweb.com>]

Martin Neuditschko wrote:


> Something is strange here:
> The first 3-4 digits of SNR are equal to the first 3-4 digits of SS!
> Is it possible that something in DvbApi->getSNR() - DvbApi->getSS()
> is wrong?

it would be possible, the fact is that I don't know which kind of values 
dvb-c cards return.

Isn't there an error message on the terminal window? Could you 
experiment this: in dvbapi.c:


#ifdef TECH
int cDvbApi::getSS()
{
   int SS = 0;
   if(ioctl(fd_frontend, FE_READ_SIGNAL_STRENGTH, &SS) < 0)
   {
     perror("Error reding SS:");
     return 0;
   }
   if(SS>256) SS/=256; // this is a very poor way to test if the value 
returned by
                       // the ioctl is a 16 bit one; if yes it's 
converted into 8 bit
   return SS;
}

int cDvbApi::getSNR()
{
   int SNR = 0;
   if(ioctl(fd_frontend, FE_READ_SNR, &SNR) < 0)
   {
     perror("Error reding SNR:");
     return 0;
   }
   return SNR;
}



it's only a matter to add return 0 under the perror (don't know why I 
didn't put it before); keep the bar indicator removed for now.
However if there's an error reding from the ioctl there should really be 
a message on the terminal window.....

bye
as