[linux-dvb] Implementing support for multi-channel

[Andrea <mariofutire@googlemail.com>]

 > It's (partly) for a research project, so I have to look at all possible
 > solutions, software being one, so dvbstreamer is part of the solution  :-)
 > The others are at driver and hardware level (the hardware supports this).

I can try to explain you what I have understood.
Please anybody correct me where I am wrong.
The following is true in the case of a USB card capable of passing the whole TS to the kernel.

1 tuner => only 1 frequency!

The dvr is useless since it can be opened only once.

You can open the demux as many times as you want.
Each time you set a filter.
Then you can read from them.

You can filter

1) based on a PID
2) just get the whole signal
3) set a section filter

case 1 and 2: you can decide whether to get the TS or PES version of the stream.
I am not too sure about PES. TS is pretty easy to use.

If you want to get a channel (audio + video), then you are in trouble.
I can only filter 1 pid, or the whole TS. So you would need to get the whole signal from each demux 
and filter (audio, video, subtitles...) in your userspace application (which is a big waste!)

I have tried to ask (but did not get any answer) in this list, what people think about multi pid 
filter, so that you can get a full channel in each demux.

Hope it helps.

Andrea

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