add SNRdb calculation for bcm4501 in LDPC Mode

diff --git a/lib/dvb/frontend.cpp b/lib/dvb/frontend.cpp
index 635de8f55778145b3c5567184189c58d87eb69f7..27ea66ec19fd12c4092a1ab76f73e81f6f33d3da 100644 (file)
--- a/lib/dvb/frontend.cpp
+++ b/lib/dvb/frontend.cpp
@@ -81,22 +81,26 @@
                if (!m_simulate) \
                        eDebug(x); \
        } while(0)
-//             else \
-//             { \
-//                     eDebugNoNewLine("SIMULATE:"); \
-//                     eDebug(x); \
-//             } \
+#if 0
+               else \
+               { \
+                       eDebugNoNewLine("SIMULATE:"); \
+                       eDebug(x); \
+               }
+#endif
 
 #define eDebugNoSimulateNoNewLine(x...) \
        do { \
                if (!m_simulate) \
                        eDebugNoNewLine(x); \
        } while(0)
-//             else \
-//             { \
-//                     eDebugNoNewLine("SIMULATE:"); \
-//                     eDebugNoNewLine(x); \
-//             } \
+#if 0
+               else \
+               { \
+                       eDebugNoNewLine("SIMULATE:"); \
+                       eDebugNoNewLine(x); \
+               }
+#endif
 
 void eDVBDiseqcCommand::setCommandString(const char *str)
 {
@@ -725,34 +729,58 @@ int eDVBFrontend::readFrontendData(int type)
                        if (!strcmp(m_description, "BCM4501 (internal)"))
                        {
                                unsigned int SDS_SNRE = snr << 16;
+                               float snr_in_db;
 
-                               static float SNR_COEFF[6] = {
-                                       100.0 / 4194304.0,
-                                       -7136.0 / 4194304.0,
-                                       197418.0 / 4194304.0,
-                                       -2602183.0 / 4194304.0,
-                                       20377212.0 / 4194304.0,
-                                       -37791203.0 / 4194304.0,
-                               };
-
-                               float fval1, fval2, snr_in_db;
-                               int i;
-                               fval1 = 12.44714 - (2.0 * log10(SDS_SNRE / 256.0));
-                               fval2 = pow(10.0, fval1)-1;
-                               fval1 = 10.0 * log10(fval2);
-
-                               if (fval1 < 10.0)
+                               if (parm_u_qpsk_fec_inner <= FEC_AUTO) // DVB-S1 / QPSK
                                {
-                                       fval2 = SNR_COEFF[0];
-                                       for (i=0; i<6; ++i)
+                                       static float SNR_COEFF[6] = {
+                                               100.0 / 4194304.0,
+                                               -7136.0 / 4194304.0,
+                                               197418.0 / 4194304.0,
+                                               -2602183.0 / 4194304.0,
+                                               20377212.0 / 4194304.0,
+                                               -37791203.0 / 4194304.0,
+                                       };
+                                       float fval1 = 12.44714 - (2.0 * log10(SDS_SNRE / 256.0)),
+                                         fval2 = pow(10.0, fval1)-1;
+                                       fval1 = 10.0 * log10(fval2);
+
+                                       if (fval1 < 10.0)
                                        {
-                                               fval2 *= fval1;
-                                               fval2 += SNR_COEFF[i];
+                                               fval2 = SNR_COEFF[0];
+                                               for (int i=0; i<6; ++i)
+                                               {
+                                                       fval2 *= fval1;
+                                                       fval2 += SNR_COEFF[i];
+                                               }
+                                               fval1 = fval2;
                                        }
-                                       fval1 = fval2;
+                                       snr_in_db = fval1;
                                }
-                               snr_in_db = fval1;
+#if HAVE_DVB_API_VERSION >= 3
+                               else
+                               {
+                                       float fval1 = SDS_SNRE / 268435456.0,
+                                                 fval2, fval3, fval4;
 
+                                       if (parm_u_qpsk_fec_inner <= FEC_S2_QPSK_9_10) // DVB-S2 QPSK
+                                       {
+                                               fval2 = 6.76;
+                                               fval3 = 4.35;
+                                       }
+                                       else // 8PSK
+                                       {
+                                               fval1 *= 0.5;
+                                               fval2 = 8.06;
+                                               fval3 = 6.18;
+                                       }
+                                       fval4 = -10.0 * log10(fval1);
+                                       fval1 = fval4;
+                                       for (int i=0; i < 5; ++i)
+                                               fval1 = fval4 - fval2 * log10(1.0+pow(10.0, (fval3-fval1)/fval2));
+                                       snr_in_db = fval1;
+                               }
+#endif
                                return (int)(snr_in_db * 100.0);
                        }
                        else if (strstr(m_description, "Alps BSBE1 C01A") ||
@@ -781,7 +809,6 @@ int eDVBFrontend::readFrontendData(int type)
                                                i;
                                        if(INRANGE(CN_lookup[Imin][REGVAL],regval,CN_lookup[Imax][REGVAL]))
                                        {
-                                               long val;
                                                while((Imax-Imin)>1)
                                                {
                                                        i=(Imax+Imin)/2;