> It seems my personal mail to Andy Walls didn reach him, so I repost it
> here:
>
> I would like to add support for cx18 devices in the pvrinput-plugin for
> vdr
> and have a few questions:
>
> Do all cx18-based cards have a Tuner that supports PAL ?
No. The HVR-1600 for example is NTSC only.
> I read that sliced VBI is now working. How can I detect if the installed
> cx18
> driver supports it? Should I quiry the capabilitys for
> V4L2_CAP_SLICED_VBI_CAPTURE
Yes, that's the right way to do it.
> , or is it better to determine support by
> looking
> for the driver version number?
>
> How do I switch from TV or external inputs to radio? The ivtv driver needs
> to
> switch to the "Tuner" input (which seems to be namend "Tuner 1" for cx18)
> and
> then open the radio device.
I never realized that, but this might be questionable behavior from ivtv.
I think that opening the radio device should always switch to the tuner
input automatically.
Anyway, the cx18 behavior is similar to ivtv. And use ENUMINPUT to
determine which input has the tuner. Don't rely on the name of the input.
> The pvrusb2 driver has its own input name for
> radio.
Hmm, dubious behavior as well.
> Is there anything special which is different from the ivtv driver? Any
> unsupported ioctl? (The pvrusb2 driver does not support
> V4L2_ENC_CMD_STOP/START for example)
It should be pretty similar to ivtv. When I wrote the initial version of
cx18 I leaned heavily on the ivtv code.
> Do all cx18-based cards have ATSC support? Or are there any devices that
> support DVB-C, DVB-T or DVB-S instead? Is there any analogue-only device
> with
> a cx23418 chip?
There are definitely analog-only versions around. I know of at least one
card that uses DVB-T. Currently the cx18 driver doesn't support any DVB-?
tuners, though. Just analog and ATSC.
>
> Greets from Germany,
> Martin
Greetings from Norway,
Hans
>
> _______________________________________________
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> http://ivtvdriver.org/mailman/listinfo/ivtv-devel
>
--
Hans Verkuil - video4linux developer - sponsored by TANDBERG
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