DVBSignalMonitor needs to be able to monitor NIT/SDT

[Mark.Buechler@…]

DVBSignalMonitor thread incorrectly exits the very first time it gets a lock. This is fine unless you're using a rotor and the lock is gained on the wrong transponder on the wrong satellite. Maybe DVBSignalMonitor should exit after a PAT is successfully created? This still doesn't account for the case where transpoder frequencies AND SIDs are identicle on multiple satellites Myth locks onto between rotor begin and end positions.

[danielk]

The signal monitor probably shouldn't be started until the rotor has properly aimed the antenna. Is there any way to detect that?

[danielk]

(In [9565]) Fixes #927, refs #1049, refs #1552. Retunes when we fail to see video after a while (for DVB-S).

This is mainly intended to help DVB-S, where sometimes tuning fails due to DiSEqC and other hardware and driver issues.

This should be backed out and moved to DVBSignalMonitor once #1049 is addressed. At the moment we never know if we are on the
right transport, which is especially problematic when there is a rotor involved. Once #1049 is implemented we will know, and
then we can safely move this code to the signal monitor which also means the UI won't freeze up while tuning DVB-S channels.

[stuarta]

Implementing NIT/SDT monitoring in DVBSignalMonitor would
allow us to fix #1485 in a more correct way, and make
scanning behave better overall.

We would then be able to tell the signal monitor what we
were after, which would eliminate the need to implement
any type of state machine in the scanner....

[danielk]

(In [9798]) Refs #1035. Refs #1049. This is a continuation of the refactor started in [9790].

This makes it possible for DVBRecorder and SIParser to use a DVBStreamData in
addition to a ATSCStreamData.

This allows us to move more of the DVB specific EIT stuff from SIParser to DVBStreamData.

I also referenced #1049, because this lets us use a DVBStreamData in DVBSignalMonitor
and then pass it along to both the DVBRecorder and DVBSIParser; which simplifies
the implementation of NIT/SDT monitoring.

This also adds SetStreamData?() and GetStreamData?() stubs to DTVRecorder, this allows
us to get rid of a few of the ifdef's in TVRec. TVRec has also been modified to
use a DVBStreamData rather than an ATSCStreamData when starting a signal monitor
for a non-ATSC digital channel.

[Janne <janne-mythtv@…>]

I'll attach a patch that implements sdt-monitoring for DVB standard conforming channels. Please read my email for annotations.

[Janne <janne-mythtv@…>]

patch against mythtv-eit branch

[danielk]

(In [9844]) Refs #1035. Fixes #1049. Adds SDT monitoring to DTVSignalMonitor in mythtv-eit branch.

What this does is require a matching SDT table for DVB channels before decide that we are on the right transport. This especially helps with DVB-S tuning, but also lets us collect the SDT table in the DTVSignalMonitor which allows us to dependably collect DVB EIT now that the SIParser class is gone.

This also changes the scanning for ATSC/MPEG a bit. We've been inserting a networkid of '1' instead of '0' for these transports for a while. There is a db update in dbcheck to fix existing transports and some changes in siscan to insert these properly in future channel scans.

Please test/debug so that I can merge this with SVN-head soon.

[Mark]

backend log

[danielk]

(In [10132]) Refs #1552. Refs #1049. Removes DVB retuning hack from SVN head.

This should no longer be needed now that #1049 has been fixed.