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# Script to automate running of SASC-NG and Drivers 

# Driver directory 
DRIVERDIR="/home/mannaz/dvb" 
# Path to SASC-NG binary 
SASCPRG="/home/mannaz/dvb" 
# Path to CAM Directory 
CAMDIR="/home/mannaz/dvb/camfiles/" 
# Number of DVB Cards you have in your system dedicated to SASC-NG 
ADAPTERS="1" 
# Startup Options passed to SASC-NG.  Adjust according to your devices. 
#OPTIONS="-r 0 -v 2 -o" 
OPTIONS="-j 0:1  --cam-budget --sid-allpid --sid-nocache --cam-dir" 
# Number of times runsasc will attempt to restart SASC-NG after a crash has occured (set to 0 for no limit) 
MAXTRIES=10 
# Minimum runtime required (in seconds) for SASC-NG to continue restart attempts 
MINRUN=20 

## End Configuration Section ## 

SASCCMD="$SASCPRG $OPTIONS $CAMDIR" 
KILL="/usr/bin/killall -q -TERM" 

# Detect whether the DVBLooopback driver is already loaded 
# and return 0 if it *is* loaded, 1 if not: 

function DriverLoaded() 
{ 
  grep -qse dvbloopback /proc/modules 
} 

# Load all DVBLoopback driver modules needed for your hardware: 

function LoadDriver() 
{ 
  modprobe dvbloopback num_adapters=$ADAPTERS 
  sleep 5 
} 

# Unload all DVBLoopback driver modules loaded in LoadDriver(): 
function UnloadDriver() 
{ 
  rmmod dvbloopback
} 

# Load driver if it hasn't been loaded already: 
if ! DriverLoaded; then 
   LoadDriver 
   fi 

LASTRESTART=$(date +%s) 
LOOPCOUNT=0 
while (true) do 
      if [ $LOOPCOUNT -le $MAXTRIES ] || [ $MAXTRIES -eq 0 ] ; then 
        eval "screen -D -m -S sasc-ng $SASCCMD &" 
        # Wait for SASC-NG to initialize then do rest 
        sleep 10 
        touch /tmp/SASC_COMPLETE 
      else 
        $KILL runsasc 
      fi 
      # Remember PID of SASC-NG process 
      PID=$! 
      # Wait for SASC-NG to end or signal to arrive 
      wait $PID 
      # Remember return value of SASC-NG 
      RET=$? 
      if test $RET -eq 0 -o $RET -eq 2; then exit; fi 
      TIMEOFDEATH=$(date +%s) 
      RUNTIME=$((TIMEOFDEATH - LASTRESTART)) 
      if [ $TIMEOFDEATH -le $(($LASTRESTART + $MINRUN)) ] ; then 
        echo "`date` SASC-NG crashed in $RUNTIME seconds. Minimum required runtime for SASC-NG is $MINRUN seconds. Killing runsasc process..." 
        $KILL runsasc 
      fi 
      echo "`date` Reloading DVBLoopback drivers" 
      $KILL sasc-ng 
      sleep 10 
      UnloadDriver 
      LoadDriver 
      LASTRESTART=$(date +%s) 
      LOOPCOUNT=$((LOOPCOUNT+1)) 
      echo "`date` Restarting SASC-NG $LOOPCOUNT time(s). Maximum retries set to $MAXTRIES" 
      done