Add option to override Code Rate (FEC Inner) settings.

Some DVB drivers do not work well with FEC_AUTO. This option allows
to set the FEC Inner manually.

Default value: 999 (FEC_AUTO)

dvb.c

@@ -505,6 +505,33 @@ static fe_modulation_t GetModulation(void)
     exit(1);
 }
 
+static fe_code_rate_t GetFECInner(fe_caps_t fe_caps)
+{
+#define GET_FEC_INNER(fec,val)                                                    \
+    if ( (fe_caps & FE_CAN_##fec) && (i_fec == val) )                             \
+       return fec;
+
+    GET_FEC_INNER(FEC_AUTO,999);
+    if (i_fec == 0)
+        return FEC_NONE;
+    GET_FEC_INNER(FEC_1_2, 12);
+    GET_FEC_INNER(FEC_2_3, 23);
+    GET_FEC_INNER(FEC_3_4, 34);
+    if (i_fec == 35)
+        return FEC_3_5;
+    GET_FEC_INNER(FEC_4_5, 45);
+    GET_FEC_INNER(FEC_5_6, 56);
+    GET_FEC_INNER(FEC_6_7, 67);
+    GET_FEC_INNER(FEC_7_8, 78);
+    GET_FEC_INNER(FEC_8_9, 89);
+    if (i_fec == 910)
+        return FEC_9_10;
+
+#undef GET_FEC_INNER
+    msg_Err( NULL, "invalid fec-inner %d", i_fec );
+    exit(1);
+}
+
 /*****************************************************************************
  * FrontendSet
  *****************************************************************************/
@@ -575,6 +602,7 @@ static struct dtv_properties dvbt_cmdseq = {
 #define INVERSION 2
 #define SYMBOL_RATE 3
 #define BANDWIDTH 3
+#define FEC_INNER 4
 
 static void FrontendSet( void )
 {
@@ -623,10 +651,11 @@ static void FrontendSet( void )
             p = &dvbs_cmdseq;
 
         p->props[SYMBOL_RATE].u.data = i_srate;
+        p->props[FEC_INNER].u.data = GetFECInner(info.caps);
         p->props[FREQUENCY].u.data = FrontendDoDiseqc();
 
-        msg_Dbg( NULL, "tuning QPSK frontend to f=%d srate=%d modulation=%s",
-                 i_frequency, i_srate,
+        msg_Dbg( NULL, "tuning QPSK frontend to f=%d srate=%d fec=%d modulation=%s",
+                 i_frequency, i_srate, i_fec,
                  psz_modulation == NULL ? "legacy" : psz_modulation );
         break;
 
@@ -700,8 +729,8 @@ static void FrontendSet( void )
         fep.u.qam.fec_inner = FEC_AUTO;
         fep.u.qam.modulation = QAM_AUTO;
 
-        msg_Dbg( NULL, "tuning QAM frontend to f=%d, srate=%d", i_frequency,
-                 i_srate );
+        msg_Dbg( NULL, "tuning QAM frontend to f=%d, srate=%d",
+                 i_frequency, i_srate );
         break;
 
     case FE_QPSK:

dvblast.c

@@ -53,6 +53,7 @@ int i_adapter = 0;
 int i_fenum = 0;
 int i_frequency = 0;
 int i_srate = 27500000;
+int i_fec = 999;
 int i_satnum = 0;
 int i_voltage = 13;
 int b_tone = 0;
@@ -312,7 +313,7 @@ static void DisplayVersion()
  *****************************************************************************/
 void usage()
 {
-    msg_Raw( NULL, "Usage: dvblast [-q] [-c <config file>] [-r <remote socket>] [-t <ttl>] [-o <SSRC IP>] [-i <RT priority>] [-a <adapter>] [-n <frontend number>] [-S <diseqc>] [-f <frequency>|-D <src mcast>:<port>|-A <ASI adapter>] [-s <symbol rate>] [-v <0|13|18>] [-p] [-b <bandwidth>] [-m <modulation] [-u] [-W] [-U] [-d <dest IP:port>] [-e] [-T]" );
+    msg_Raw( NULL, "Usage: dvblast [-q] [-c <config file>] [-r <remote socket>] [-t <ttl>] [-o <SSRC IP>] [-i <RT priority>] [-a <adapter>] [-n <frontend number>] [-S <diseqc>] [-f <frequency>|-D <src mcast>:<port>|-A <ASI adapter>] [-F <fec inner>] [-s <symbol rate>] [-v <0|13|18>] [-p] [-b <bandwidth>] [-m <modulation] [-u] [-W] [-U] [-d <dest IP:port>] [-e] [-T]" );
 
     msg_Raw( NULL, "Input:" );
     msg_Raw( NULL, "  -a --adapter <adapter>" );
@@ -321,6 +322,8 @@ void usage()
     msg_Raw( NULL, "  -D --rtp-input        read packets from a multicast address instead of a DVB card" );
     msg_Raw( NULL, "  -e --epg-passthrough  enable EPG pass through (EIT data)" );
     msg_Raw( NULL, "  -f --frequency        frontend frequency" );
+    msg_Raw( NULL, "  -F --fec-inner        Forward Error Correction (FEC Inner)");
+    msg_Raw( NULL, "    DVB-S2 0|12|23|34|35|56|78|89|910|999 (default auto: 999)");
     msg_Raw( NULL, "  -m --modulation       Modulation type" );
     msg_Raw( NULL, "    DVB-C  qpsk|qam_16|qam_32|qam_64|qam_128|qam_256 (default qam_auto)" );
     msg_Raw( NULL, "    DVB-T  qam_16|qam_32|qam_64|qam_128|qam_256 (default qam_auto)" );
@@ -371,6 +374,7 @@ int main( int i_argc, char **pp_argv )
         { "adapter",         required_argument, NULL, 'a' },
         { "frontend-number", required_argument, NULL, 'n' },
         { "frequency",       required_argument, NULL, 'f' },
+        { "fec-inner",       required_argument, NULL, 'F' },
         { "symbol-rate",     required_argument, NULL, 's' },
         { "diseqc",          required_argument, NULL, 'S' },
         { "voltage",         required_argument, NULL, 'v' },
@@ -390,7 +394,7 @@ int main( int i_argc, char **pp_argv )
         { 0, 0, 0, 0}
     }; 
 
-    while ( ( c = getopt_long(i_argc, pp_argv, "q::c:r:t:o:i:a:n:f:s:S:v:pb:m:uWUTd:D:A:ehV", long_options, NULL)) != -1 )
+    while ( ( c = getopt_long(i_argc, pp_argv, "q::c:r:t:o:i:a:n:f:F:s:S:v:pb:m:uWUTd:D:A:ehV", long_options, NULL)) != -1 )
     {
         switch ( c )
         {
@@ -465,6 +469,10 @@ int main( int i_argc, char **pp_argv )
             pf_UnsetFilter = dvb_UnsetFilter;
             break;
 
+        case 'F':
+            i_fec = strtol( optarg, NULL, 0 );
+            break;
+
         case 's':
             i_srate = strtol( optarg, NULL, 0 );
             break;

dvblast.h

@@ -112,6 +112,7 @@ extern int i_fenum;
 extern int i_frequency;
 extern int i_srate;
 extern int i_satnum;
+extern int i_fec;
 extern int i_voltage;
 extern int b_tone;
 extern int i_bandwidth;