Implementing support for multi-channel

Hello,

I was wondering if there's some info to find on how to implement (and test) multi-channel receiving?

It's possible, because dvb uses streams and the driver is currently capable to filter one channel, but how can I implement the support of multi-channel filtering?

Is there perhaps an open-source driver supporting this that I can have a look at?

-----Original Message-----
From: Jarryd Beck [mailto:[email protected]]
Sent: 12 March 2008 11:32
To: Ben Backx
Cc: [email protected]
Subject: Re: [linux-dvb] Implementing support for multi-channel

2008/3/12 Ben Backx <[email protected]>:

Quoted 6 lines

Hello,

I was wondering if there's some info to find on how to implement (and

test)

Quoted 3 lines

multi-channel receiving?

It's possible, because dvb uses streams and the driver is currently

capable

Quoted 1 line

to filter one channel, but how can I implement the support of multi-

channel

Quoted 3 lines

filtering?

Is there perhaps an open-source driver supporting this that I can

have a

Quoted 2 lines

look at?

AFAIK tuners can already receive from multiple channels as long as they are on the same transponder (I think that's the right word). So in Australia
you can receive channel 7 and the channel 7 guide because they are broadcast together. But I don't think you can do anymore than that.

I think mythtv is capable of doing it so you could have a look at that.

Jarryd.

Quoted 16 lines

-----Original Message-----
From: Jarryd Beck [mailto:[email protected]]
Sent: 12 March 2008 11:32
To: Ben Backx
Cc: [email protected]
Subject: Re: [linux-dvb] Implementing support for multi-channel

2008/3/12 Ben Backx <[email protected]>:

Quoted 6 lines

Hello,

I was wondering if there's some info to find on how to implement

(and

Quoted 4 lines

test)

Quoted 3 lines

multi-channel receiving?

It's possible, because dvb uses streams and the driver is

currently

Quoted 2 lines

capable

Quoted 1 line

to filter one channel, but how can I implement the support of

multi-

Quoted 9 lines

channel

Quoted 3 lines

filtering?

Is there perhaps an open-source driver supporting this that I can

have a

Quoted 2 lines

look at?

AFAIK tuners can already receive from multiple channels as long as

they

Quoted 6 lines

are on the same transponder (I think that's the right word). So in Australia
you can receive channel 7 and the channel 7 guide because they are broadcast together. But I don't think you can do anymore than that.

I think mythtv is capable of doing it so you could have a look at

that.

Quoted 2 lines

Jarryd.

The tuner-part is no problem indeed (as you said: as long as the channels
are on the same transponder).
But for the moment: the driver-part is the problem, I don't think my driver
supports the filtering of more than one channel at a time. So my question is: which (existing) driver does support multi-channel filtering? So I can have a look and see what modifications have to be made
to my driver to implement multi-channel filtering.

Hello,

I was wondering if there's some info to find on how to implement (and test)
multi-channel receiving?
It's possible, because dvb uses streams and the driver is currently capable
to filter one channel, but how can I implement the support of multi-channel
filtering?
Is there perhaps an open-source driver supporting this that I can have a look at?

Quoted 13 lines

Hello,

I was wondering if there's some info to find on how to implement (and test)
multi-channel receiving?
It's possible, because dvb uses streams and the driver is currently capable
to filter one channel, but how can I implement the support of multi-channel
filtering?
Is there perhaps an open-source driver supporting this that I can have a look at?

Check out the dvbstreamer project:

http://dvbstreamer.sourceforge.net/

This allows multi-channel recording / streaming if the DVB device supports sending the whole transport stream (some usb devices do not support this). This works by sending the whole transport stream to the dvbstreamer program, then this program allows filtering out and recording separate channels from that stream as required.

This isn't a driver level solution, but might provide the function you need.

-----Original Message-----
From: Stephen Rowles [mailto:[email protected]]
Sent: 12 March 2008 13:20
To: Ben Backx
Cc: [email protected]
Subject: Re: [linux-dvb] Implementing support for multi-channel

Quoted 11 lines

Hello,

I was wondering if there's some info to find on how to implement (and test)
multi-channel receiving?
It's possible, because dvb uses streams and the driver is currently capable
to filter one channel, but how can I implement the support of multi-channel
filtering?
Is there perhaps an open-source driver supporting this that I can

have a

Quoted 1 line

look at?

Check out the dvbstreamer project:

http://dvbstreamer.sourceforge.net/

This allows multi-channel recording / streaming if the DVB device supports
sending the whole transport stream (some usb devices do not support this).
This works by sending the whole transport stream to the dvbstreamer program, then this program allows filtering out and recording separate channels from that stream as required.

This isn't a driver level solution, but might provide the function you need.

-----Original Message-----
From: Tero Pelander [mailto:[email protected]]
Sent: 13 March 2008 07:29
To: Ben Backx
Subject: Re: [linux-dvb] Implementing support for multi-channel

Quoted 1 line · Stephen Rowles

Quoted 1 line

I was wondering if there's some info to find on how to implement

(and

Quoted 1 line

Quoted 1 line

test) multi-channel receiving?

One such program that is easy to understand due to modularity is dvbyell. It has separate code for tuner part and separate code for splitting MPTS (multiple program transport stream) into many single program transport streams.

http://www.dvbyell.org/