[Openal] Re: Re: capturing audio from line in

[Daniel Chaves Toscano Dantas]

Hello,

Thanks for your reply.

I'm using OpenAL Soft 1.5.304.
It's available at http://kcat.strangesoft.net/openal.html as a tarball distro.
Is this version stable for capturing purposes ?

Should I try the git one ?
Any idea ?

Thank you!!
Daniel



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> Today's Topics:
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>    1. capturing audio from line in (Daniel Chaves Toscano Dantas)
>    2. Re: capturing audio from line in (Chris Robinson)
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 25 Oct 2008 01:02:14 -0200
> From: Daniel Chaves Toscano Dantas <danflu at uninet.com.br>
> Subject: [Openal] capturing audio from line in
> To: openal at opensource.creative.com
> Message-ID: <49028C36.2040808 at uninet.com.br>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hello,
>
> I'm trying to capture audio from "line in" in linux (Ubuntu
> 8.04) using the openal API.
>
> I've written a small test application for audio capture that
> works for microphone input and dont work for "line in"
> input.
>
> When i ask openal to list the available capture devices i
> get the following list:
>
> 1 - ALSA Capture on default
> 2 - ALSA Capture on HDA Intel
> 3 - OSS Capture
>
> I've tried all them for "line in" but no one produces sound
> output.
>
> When i attach a mic to my computer i get sound output
> perfectly well when using device "ALSA Capture on default". 
>
> The following two devices do not work for microphone (ALSA
> Capture on HDA Intel produces an error message  "AL lib:
> alsa.c:562: set channels failed: Invalid argument" and OSS
> Capture do not produces any audio samples).
>
> I tested "line in" using the Operating System mixer and it's
> working well so the problem appears to be located something
> in openal configuration itself...
> Just to inform ... I'm using openal-soft implementation
> (http://kcat.strangesoft.net/openal.html </cgi-bin/webmail.cgi?cmd=url&xdata=%7E2-dc4330f985b6b65d441f9134f87e96ac074d9ef0db9dd6d500&url=http%213A%212F%212Fkcat.strangesoft.net%212Fopenal.html>)
>
> I dont have any clue about what is going on... I've checked
> the docs and there is no reference about diferences on
> capturing from microphone or from line in...
>
> Please Help !!
> Thank you very much
> Daniel
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 24 Oct 2008 20:34:45 -0700
> From: Chris Robinson <chris.kcat at gmail.com>
> Subject: Re: [Openal] capturing audio from line in
> To: openal at opensource.creative.com
> Message-ID: <200810242034.45342.chris.kcat at gmail.com>
> Content-Type: text/plain;  charset="iso-8859-1"
>
> On Friday 24 October 2008 08:02:14 pm Daniel Chaves Toscano Dantas wrote:
>   
>> I've written a small test application for audio capture that
>> works for microphone input and dont work for "line in"
>> input.
>>
>> When i ask openal to list the available capture devices i
>> get the following list:
>>
>> 1 - ALSA Capture on default
>> 2 - ALSA Capture on HDA Intel
>> 3 - OSS Capture
>>     
>
> Hi Daniel.
>
> What version of OpenAL Soft do you have? That looks like it could be an older 
> version since newer ones should print all available ALSA devices, not just 
> the ALSA cards (eg. "HDA NVidia [ALC883 Analog]").
>
>
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> End of Openal Digest, Vol 31, Issue 6
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