[linux-dvb] [PATCH] tda1004x driver has code to support HIERARCHY_AUTO, but does not set FE_CAN_HIERARCHY_AUTO

Wolfgang Wegner wolfgang at leila.ping.de
Tue Sep 18 15:35:52 CEST 2007


Hi Patrick,

On Tue, Sep 18, 2007 at 04:36:33PM +0200, Patrick Boettcher wrote:
> Hi Simon,
> 
> And even if they would be hierarchically transmitted, it would not be 
> possible to receive them: The LinuxTV API as of today is not capable of 
> selecting either the high-priority stream or the low-priority one - there 
> is simply no field to select it. All it could say is whether there is 
> hierarchy used or not.

just a stupid question:
How is a frontend supposed to handle that anyways?
The demods I know about only have one transport stream output,
how are high and low priority data separated?
(I was thinking it would have to be done by PID on a packet-by-packet
base, so it would transparent to the demux layer, but I did not find
an application really using hierarchical transmission yet.)

Regards,
Wolfgang




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