Several capture devices in parallel

Hello!

I want to run an application that captures samples from several devices in
parallel.
The specification says that capturing runs beyond the concept of (playback)
contexts and it appears that capturing has no concept of context at all;

Although I can open several capture devices in parallel, any further capture
function only returns results from the first device opened - the device
parameter appears to be ignored. It so happened that for example my second
device provided audio available only on the first one.
alcCreateContext() returns NULL for those devices, so the only 'context'
available is the device, which is ignored.

The devices are accessed in dedicated threads each - sample capture is
currently separated by a mutex, as the results were even weirder without (one
thread snatched the samples from the first, while the first expected them and
so forth)

Is it meant to be possible to have several capture devices running? If so,
what am I missing?

System:
OS: Windows 2008 Server 64bit
Interface: RME AIO, newest WDM Driver (3.08.2)
OpenAL: OpenAL32.dll Ver.6.14.357.24, wrap_oal.dll Ver.2.2.0.5
(I'm trying to capture the 4 pairs of ADAT channels, which are stereo capture
devices each)

Thanks,
ch
____________________________________________________
Christian Haas
Team DIVOS, Software Engineer
FREQUENTIS AG

Innovationsstraße 1, 1100 Vienna, Austria
Phone   +43-1-811 50 - 8353
Mobile   +43-664-60 850 - 8353
Fax       +43-1-811 50 - 77 8353
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E-Mail    [email protected]
 
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