+ ret = 10 * (int)(-100 * (log10(snr) - log10(255)));
+ }
+
+ if (type == signalQuality)
+ {
+ if (ret == 0x12345678) // no snr db calculation avail.. return untouched snr value..
+ return snr;
+ switch(m_type)
+ {
+ case feSatellite: // we assume a max of 17.5db here
+ return ret >= 1750 ? 65536 : ret * 65536 / 1750;
+ case feCable: // we assume a max of 42db here
+ return ret >= 4200 ? 65536 : ret * 65536 / 4200;
+ case feTerrestrial: // we assume a max of 24db here
+ return ret >= 2400 ? 65536 : ret * 65536 / 2400;
+ }