[Fwd: Re: [Alsa-user] playng several files at the same time]

[Sagi Bashari <sagi@boom.org.il>]

[-- Attachment #1: Type: text/plain, Size: 50 bytes --]

No answer on the users list, forwarding to devel.

[-- Attachment #2: Re: [Alsa-user] playng several files at the same time --]
[-- Type: message/rfc822, Size: 5101 bytes --]

From: Sagi Bashari <sagi@boom.org.il>
To: AthlonRob <athlonrob@data.4t3.com>
Cc: alsa-user@lists.sourceforge.net
Subject: Re: [Alsa-user] playng several files at the same time
Date: Sat, 05 Oct 2002 19:49:05 +0200
Message-ID: <3D9F2611.1030805@boom.org.il>

On 10/5/2002 6:34 PM, AthlonRob wrote:

>On Sat, 2002-10-05 at 02:21, Sagi Bashari wrote:
>
>  
>
>>I installed ALSA on computer running RedHat 8.0 with Hercules Game 
>>Theater XP Sound Card.
>>
>>According to the ALSA website, this card should support hardware mixing, 
>>so I should be able to play more than one file in the same time.
>>
>>After I start to play the first file, every file I'm trying to play will 
>>simply hang until the first one finishes.
>>
>>I read somewhere that this is the intended behavior and if a programmer 
>>wants to he can disable it in his program code (using nonblock or 
>>something like that).
>>
>>However, I would like to enable it globally.
>>    
>>
>
>Well.... I just posted a somewhat similar question last night about my
>nForce chip.  :-)
>
>Are you sure 'Hardware mixing' is what you need to play multiple files
>... I got the impression it was 'Multiple I/O' (but I could be totally
>mistaken).
>

Yes, I'm sure. See section 3.9 in 
http://www.alsa-project.org/~jfulmer/alsa-faq.html.

I had a Trident 4DWave card some years ago, and back then it did work 
with multiopen. I think it's disabled now - I read it in one of the 
packages documentation. My current GTXP card is much more advanced and 
supports mixing as well according to the site (I belive most modern 
soundcards do, only that alsa does not support this feature in all of them).

>
>Where on the ALSA website, exactly, did you find out your card supported
>'Hardware mixing'?  While I'm pretty sure my card *does* support
>whatever is required to play multiple files at once (I learned a
>SoundBlaster PCI128 does as does a SB Live, so surely it must be common
>in nice cards, right?) I would like to see if I can find out for sure.
>
I found in in the "SoundCard Matrix" section in the ALSA site - 
http://www.alsa-project.org/alsa-doc/ the '(4)' note means that a card 
supports hardware mixing.

>
>Sadly, I haven't received any responses to my original query.  I'm
>somewhat at a loss as far as all this sound stuff goes, but may (or may
>not) take it to the developers list if nobody has a clue...  :-)
>
>Rob
>
>
>  
>

Sagi




-------------------------------------------------------
This sf.net email is sponsored by:ThinkGeek
Welcome to geek heaven.
http://thinkgeek.com/sf
_______________________________________________
Alsa-user mailing list
Alsa-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/alsa-user