Audio on cx18 based cards (Hauppauge HVR1600)

[Simon Farnsworth <simon.farnsworth@onelan.com>]

Hello,

I'm trying to make a Hauppauge HVR1600 (using the cx18 driver) work well
with Xine; Hans de Goede has sorted out the video side of the card for
me, and I now need to get the audio side cleared up.

I'm used to cards like the Hauppauge HVR1110, which exports an ALSA
interface for audio capture; the HVR1600 doesn't do this. Instead, it
exports a "video" device, /dev/video24 that appears to have some
variation on PCM audio on it instead of video.

How should I handle this in Xine's input_v4l.c? Should the driver be
changed to use ALSA? If not, how do I detect this case, and how should I
configure the PCM audio device?

If the driver needs modifying, I can do this, but I'll need an
explanation of how to do so without breaking things for other people -
I've not done much with ALSA drivers or with V4L2 drivers.
-- 
Simon Farnsworth