ACM using TrueSpeech codec (acmStreamOpen())

[Robert W. Brewer]

Hi all, I and a few others are trying to implement 
Yahoo voice chat under Linux.  Since Yahoo uses 
the TrueSpeech codec, we are trying to load the 
TrueSpeech DLL directly under Linux.  mplayer can 
play TrueSpeech files already, and it appears that 
it contains portions of Wine code to do so.  But 
mplayer cannot create TrueSpeech files as far as I 
know.

We have ripped the relevant code out of mplayer 
and coaxed it to convert a TrueSpeech file to 
plain old PCM format.  However, when I attempt to 
go the other way (PCM to TrueSpeech format), I 
always get an error when calling acmStreamOpen(). 
  The error code is ACMERR_NOTPOSSIBLE.

The next thing to do is to try and compile my code 
against libwine instead of the Wine code from 
mplayer, but I'm having a very difficult time 
understanding what I need to do for that to 
happen.  I have never written a Windows 
application before, and if I could get 
acmStreamOpen() to work correctly I could just go 
back to the world of Linux programming.  :)

Has anyone used the ACM and/or TrueSpeech codec 
successfully and has some ideas?  It may just be 
something wrong with the parameters I'm filling 
into the WAVEFORMATEX structs.  My code is pretty 
straightforward, it's about 6 KB uncompressed if 
anyone can take a look.  Thanks for any help.

-Rob