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From: Andrea <mariofutire@googlemail.com>
To: linux-dvb@linuxtv.org
Subject: [linux-dvb] How to use a DVB FRONTEND in read only?
Date: Fri, 13 Jun 2008 22:07:44 +0100	[thread overview]
Message-ID: <g2unka$ivi$1@ger.gmane.org> (raw)

Hi,

I have a question about multiple access to the dvb framework.

I would like to open the dvb in readonly and take whatever frequency is currently tuned:

1) I open the frontend in read only
2) query the current frequency to check is there is a lock
3) I open the demux, set some filters and read from the demux.

There is a *big* issue here:

The card streams packets *only* and *as long* as the frontend is opened in read/write (by some other 
application) and tuned.
If my application opens the frontend in readonly and there is no other application running, the 
ioctl FE_GET_INFO still returns FE_HAS_LOCK but no data goes through the demux.
As soon as the frontend is tuned, the data arrives.

Am I correct? How can I detect if the dvb is running or not?

Andrea


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             reply	other threads:[~2008-06-13 21:15 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-13 21:07 Andrea [this message]
2008-06-14 12:13 ` [linux-dvb] How to use a DVB FRONTEND in read only? Claudio Luck
2008-06-14 12:31   ` Andrea
2008-06-14 15:59     ` Claudio Luck

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