Speex dev - Aug 2004 - ACM codec

Hi-

is someone working on ACM codec at the moment?
if not, I'll start writting it one of these days.

-XF
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X-Fixer wrote:
> Hi-
> 
> is someone working on ACM codec at the moment?
> if not, I'll start writting it one of these days.
> 
> -XF
<p>I was going to; asked on this list about it back in December.  But the 
documentation on the MS website stinks ... it basically says, "Look at 
the example GSM 6.10 codec provided in the Microsoft Driver Development 
Kit and replace the application-specific bits" ... but, while I own a 
student edition of MS Dev Studio, I don't have an MSDN subscription.

(The DDK is actually free from Microsoft, but S&H is $15 ... you can 
order it off the MS website.)

There are two big wins here, as far as I can tell.  First, this should 
let you record sound in Microsoft Sound Recorder and save as Speex.  (I 
think!  I think that app uses the ACM interface.)

Second, this would allow, with some registry tweaking, Microsoft 
NetMeeting users to employ Speex.  This would be especially appreciated 
by us OpenH323/GnomeMeeting users, because the MS GSM codec stinks.

One more thing.  Microsoft NetMeeting does not pay any attention to the 
standard content-type specifiers that the H.323 standard employs.  If 
you want it to interoperate with OpenH323, you'll have to modify that 
code as well to specify the code points (application-specific 
parameters) that get compiled in to the ACM library.  It shouldn't be 
too difficult; the OpenH323 MS-GSM codec should provide an example of 
that already.  If you can get the ACM codec working, I can probably do 
the OpenH323 end of it.

I would *love* to be able to throw this at my NetMeeting friends and get 
good NM <-> GnomeMeeting sound.

::sigh::  I think I've asked before ... but does anyone on this list 
have the MS DDK?  Want to send me a copy of the GSM 6.10 codec example? 
  Not that I'll have any time between now and the end of the semester 
.. but it never hurts to ask...

Regards,
Brian


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Hi Brian-

BT> I was going to; asked on this list about it back in December.  But the
BT> documentation on the MS website stinks ... it basically says, "Look
at
BT> the example GSM 6.10 codec provided in the Microsoft Driver Development 
BT> Kit and replace the application-specific bits" ... but, while I own
a
BT> student edition of MS Dev Studio, I don't have an MSDN subscription.

BT> (The DDK is actually free from Microsoft, but S&H is $15 ... you can 
BT> order it off the MS website.)

ok, I have everything that's needed (including MSDN subscription and
all possible DDKs). ACM samples go in all windows DDKs, but they are a
big piece of shit :( also, I was quite surprised, that the only piece
of documentation on ACM *drivers* is in Windows CE DDK 8)

I'll start coding this week.

BT> If you can get the ACM codec working, I can probably do the
BT> OpenH323 end of it.

I hope so. I have no understaning on OpenH323.

BT> ::sigh::  I think I've asked before ... but does anyone on this list
BT> have the MS DDK?  Want to send me a copy of the GSM 6.10 codec example? 

if you really want it, I can send it to you. (but read the comment above ;)

Peace,
X-Fixer

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