[mythtv] DVB integration - first attempt!

[Ben Bucksch]

I have been hacking away on DVB stuff for the last 3 days. I have 2 
attempts:

1. Integrating the demuxing and tuning into MythTV (mostly using 
existing code from dvbstream). Much of that is done, but it needs to be 
hooked up (I know how, but not done yet). It will probably not work at 
first, given that I have been writing on the code for 3 days without a 
single test (how could I, without card?) apart from compilation.

2. I realized that dvbstream has a telnet interface, so worst comes to 
worst, we can still control and ongoing stream and tune it, incl. PIDs. 
So, I am attemping to write a generic interface which calls a 
configurable command and recieves an MPEG2 stream from it via the pipe 
(stdout). The tuning is done via more or less the existing external 
command code. It doesn't work out of the box, though, because the 
current |Channel| code has accesses to /dev/video all over the place, 
and we don't have that with DVB, so it's failing, and I had to avoid that.

I didn't post patches yet, because it's very much work in progress. It 
does not work yet, so it would only make remotely sense to a programmer. 
If anybody wants to have it nevertheless (it costs a bit time to create 
the patch, lots of new files), please say so. Before anybody else starts 
to work on the source, I'd be happy to send the patch. I'd be a shame to 
duplicate work.

Unfortunately, I (as always :-( ) spent much longer on this than I 
expected or can affort and have to work now, so I might not be able to 
work on it in the next week or so. We'll see.

If anybody could give me a shell account on a computer with DVB card, 
that might be useful for testing.