#define INRANGE(X,Y,Z) (((X<=Y) && (Y<=Z))||((Z<=Y) && (Y<=X)) ? 1 : 0)
+/* unsigned 32 bit division */
+static inline uint32_t fe_udiv(uint32_t a, uint32_t b)
+{
+ return (a + b / 2) / b;
+}
+
int eDVBFrontend::readFrontendData(int type)
{
switch(type)
return ber;
}
case signalQuality:
- {
- uint16_t snr=0;
- if (!m_simulate)
- {
- if (ioctl(m_fd, FE_READ_SNR, &snr) < 0 && errno != ERANGE)
- eDebug("FE_READ_SNR failed (%m)");
- }
- return snr;
- }
case signalQualitydB: /* this will move into the driver */
{
+ int ret = 0x12345678;
uint16_t snr=0;
if (m_simulate)
return 0;
if (ioctl(m_fd, FE_READ_SNR, &snr) < 0 && errno != ERANGE)
eDebug("FE_READ_SNR failed (%m)");
- if (!strcmp(m_description, "BCM4501 (internal)"))
+ else if (!strcmp(m_description, "BCM4501 (internal)"))
{
- unsigned int SDS_SNRE = snr << 16;
+ float SDS_SNRE = snr << 16;
float snr_in_db;
if (parm_u_qpsk_fec_inner <= FEC_AUTO) // DVB-S1 / QPSK
if (fval1 < 10.0)
{
fval2 = SNR_COEFF[0];
- for (int i=0; i<6; ++i)
+ for (int i=1; i<6; ++i)
{
fval2 *= fval1;
fval2 += SNR_COEFF[i];
snr_in_db = fval1;
}
#endif
- return (int)(snr_in_db * 100.0);
+ ret = (int)(snr_in_db * 100);
+ ret -= 150; // -1.5db for latest bcm4501 firmware..
}
else if (strstr(m_description, "Alps BSBE1 C01A") ||
!strcmp(m_description, "Alps -S(STV0288)"))
{
if (snr == 0)
- return 0;
+ ret = 0;
else if (snr == 0xFFFF) // i think this should not happen
- return 100*100;
+ ret = 100*100;
else
{
enum { REALVAL, REGVAL };
else
Imin = i;
}
- return (((regval - CN_lookup[Imin][REGVAL])
+ ret = (((regval - CN_lookup[Imin][REGVAL])
* (CN_lookup[Imax][REALVAL] - CN_lookup[Imin][REALVAL])
/ (CN_lookup[Imax][REGVAL] - CN_lookup[Imin][REGVAL]))
+ CN_lookup[Imin][REALVAL]) * 10;
}
- return 100;
+ else
+ ret = 100;
}
- return 0;
}
else if (!strcmp(m_description, "Alps BSBE1 702A") || // some frontends with STV0299
!strcmp(m_description, "Alps -S") ||
!strcmp(m_description, "Philips -S") ||
!strcmp(m_description, "LG -S") )
{
- float snr_in_db=(snr-39075)/1764.7;
- return (int)(snr_in_db * 100.0);
+ ret = (int)((snr-39075)/17.647);
} else if (!strcmp(m_description, "Alps BSBE2"))
{
- return (int)((snr >> 7) * 10.0);
- } /* else
+ ret = (int)((snr >> 7) * 10);
+ } else if (!strcmp(m_description, "Philips CU1216Mk3"))
+ {
+ int mse = (~snr) & 0xFF;
+ switch (parm_u_qam_modulation) {
+ case QAM_16: ret = fe_udiv(1950000, (32 * mse) + 138) + 1000; break;
+ case QAM_32: ret = fe_udiv(2150000, (40 * mse) + 500) + 1350; break;
+ case QAM_64: ret = fe_udiv(2100000, (40 * mse) + 500) + 1250; break;
+ case QAM_128: ret = fe_udiv(1850000, (38 * mse) + 400) + 1380; break;
+ case QAM_256: ret = fe_udiv(1800000, (100 * mse) + 40) + 2030; break;
+ default: break;
+ }
+ } else if (!strcmp(m_description, "Philips TU1216"))
+ {
+ snr = 0xFF - (snr & 0xFF);
+ if (snr != 0)
+ 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 16.0db here
+ return ret >= 1600 ? 65536 : ret * 65536 / 1600;
+ 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;
+ }
+ }
+/* else
eDebug("no SNR dB calculation for frontendtype %s yet", m_description); */
- return 0x12345678;
+ return ret;
}
case signalPower:
{
break;
}
PutToDict(dict, "rolloff", tmp);
- if (parm_u_qpsk_fec_inner > FEC_S2_QPSK_9_10)
+ switch(parm_inversion & 0x30)
{
- switch(parm_inversion & 0x30)
- {
- case 0: // pilot off
- tmp = "PILOT_OFF";
- break;
- case 0x10: // pilot on
- tmp = "PILOT_ON";
- break;
- case 0x20: // pilot auto
- tmp = "PILOT_AUTO";
- break;
- }
- PutToDict(dict, "pilot", tmp);
+ case 0: // pilot off
+ tmp = "PILOT_OFF";
+ break;
+ case 0x10: // pilot on
+ tmp = "PILOT_ON";
+ break;
+ case 0x20: // pilot auto
+ tmp = "PILOT_AUTO";
+ break;
}
+ PutToDict(dict, "pilot", tmp);
tmp = "DVB-S2";
}
else
{
const FRONTENDPARAMETERS &parm = original || m_simulate ? this->parm : front;
const char *tmp = "INVERSION_AUTO";
- switch(parm_inversion)
+ switch(parm_inversion & 3)
{
case INVERSION_ON:
tmp = "INVERSION_ON";
return -EINVAL;
}
parm_inversion |= (feparm.rolloff << 2); // Hack.. we use bit 2..3 of inversion param for rolloff
+ parm_inversion |= (feparm.pilot << 4); // Hack.. we use bit 4..5 of inversion param for pilot
if (feparm.modulation == eDVBFrontendParametersSatellite::Modulation::M8PSK) {
parm_u_qpsk_fec_inner = (fe_code_rate_t)((int)parm_u_qpsk_fec_inner+9);
// 8PSK fec driver values are decimal 9 bigger
- parm_inversion |= (feparm.pilot << 4); // Hack.. we use bit 4..5 of inversion param for pilot
}
}
#endif