[Openal] Unable to open the device capture ???

[wassim_belhadj]

I am  using  OpenAl 1.1 and a windows platform.

When I pass NULL et alcCaptureOpenDevice methode the function returns NULL.



In fact I noticed that when i put in the properties of Sound and Peripheral
my digital dictaphone as the unit for audio playback and recording at the
same time i have  an error message  when  i try to record sound :

                        methode  "alcCaptureOpenDevice" ==> "Unable to open
the device capture"

But playing sound works perfect.

This error does not occur when  I put as  audio playback my audio sound
card and my digital dictaphone as unit for recording.
 

My  digital dictaphone contains a unit  for audio playback and a
michrophone for recording here is his image
( http://www.creative-tn.com/store/images/proplus.jpg ) . I want to use it
for audio playback and recording  sounds.

How to solve please this problem? 
Is it a  OpenAl bug? 

Tahnks
 


On Mon, 16 Jun 2008 11:21:25 -0400, Jason Daly <jdaly at ist.ucf.edu> wrote:
> wassim_belhadj wrote:
>> Dear list
>>
>> I'am using Openal to record  Sound.
>>
>> I am using  a usb  Microphone to capture sound (PHILIPS SpeechMike)
>>
>> I have an error message indicating that the initialization of the
> capture
>> is impossible.
>>
>> It is at the methode  "alcCaptureOpenDevice" ==> Unable to open the
> device
>> capture
>>
>> It is noteworthy that the name of the device is passed as parameter 
> after
>> extraction devices contained in the returned string
>>
>> of methode alcGetString.
>>
>> Please help me and thanks in advance.
>>
> 
> What implementation are you using, and what platform?
> 
> What happens if you just pass NULL for the device to
alcCaptureOpenDevice?
> 
> If you're using the OpenAL-Sample implementation, it suffers from a bug
> that requires you to open a playback device (using alcOpenDevice) before
> you can open a capture device.
> 
> --"J"