[vlc-devel] your vlc audio patch

Mark Wells mark.wells at oxsemi.com
Tue Jun 22 11:41:13 CEST 2004


Matt

Firstly, if you dont have the time to answer this, dont worry i'm sure 
I'll figure it out. I just thought it was worth asking incase you can 
put your finger straight on it. Im trying to figure out what 
capabilities your patch provides, and therefore what the priorities are 
for continuing where you left off.

As far as I am aware from reading up on the vlc-devel list (correct me 
if im wrong) your patch should provide successful multichannel support 
for OS X. The only thing it doesnt do is let you choose how many 
channels you want to use (ie it always uses the most channels it can 
find). Right (in theory) ?

I'm testing using an 8-channel audio device (yes, i've uncommented the 
8-channel support) and an ac3 audio stream. When I load the stream I 
get the error "Something is wrong with the physical format indexing 
i[0] j[2] fmt_idx[5]" I have also tried 6-channel instead, but get the 
same error. Having looked at my input stream it seems to be a single 
stream (therefore interleaved) with 9 formats.

I guess all I'm asking is this: were you/others getting this error (ie 
is this something I need to patch up before addressing the problem of 
selecting how many channels to use) or is this error new news to you?

Many thanks

Mark

----------------------------------
Mark Wells
Oxford Semiconductor Ltd
25 Milton Park, Abingdon, OX14 4SH, UK



On 15 Jun 2004, at 10:40, Matthew Romaine wrote:

>
> Mark,
>
> 	Just a quick tip, but be sure to go back over the past couple 
> references to multichannel audio on OSX on the mailing list.  There's 
> a patch I sent out that should work for all devices now that 
> interleaved and de-interleaved streams are supported, but it won't let 
> you choose which option to use.  It should be a trivial fix, but my 
> hands are currently tied.  I've also commented the code heavily so 
> anyone should be able to follow.
>
> But if you're really gonna fix it up, be sure to look up references to 
> AUHAL throughout the list to get it done right :)
>
> matt
> ----------------------------------------
> Matthew M.I. Romaine
> IMNC Audio Codec Group
> Sony Corporation
> phone: 03-5448-6065
> fax: 03-5448-5617
> ----------------------------------------
>
> -- 
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