[mythtv] DVBCam Class

[Taylor Jacob]

>>FUTURE PLANS:
>>I then plan on eliminating the transform.c code (or at least commenting it out) and creating a
>>common MPEGTS recoder class that the HDTV recorder will use as well as the DVB recorder.. I have
>>moved some of the key functions (FindKeyFrames being one) over to the dvbrecorder for testing and
>>it works great..

> This is especially exciting because I am just adding some extra speakers
> here to have surround sound.  Being able to record the odd film which
> has both two channel and AC3 audio would be fantastic.  I'm not sure
> what level of changes would be required in the player app to auto switch
> between two channel and AC3 when available, but I suspect that we would
> need to be recording the raw TS to even have this available (rather than
> straight to mpeg as now).

This part causes me a bit of confusion.. From my messing skimming of the hdtvrecorder.cpp
functions it looks to be converting the stream ot Mpeg Program Stream, but I haven't read enough
of the ISO Mpeg-2 docs to know for certain is it Stripped TS or PS.. I am not to the point to
worry about that yet.. I am pretty sure that it will be trivial for the recorder to record
whatever PIDs it wants to into the ringbuffer..  I think the bigger thing will be how do you make
the player change audio tracks.. I also wonder if anyone knows how to do that for the PVR350..