letter_from_tim_010817.txt

Audacity是一款用於錄音和編輯聲音的、免費的開放源碼軟體。它可以執行於Mac OS X、Microsoft Windows、GNU/Linux和其它作業系統

From: "Tim Flohrer" <[e-mail]>
To: "Phil Burk" <[e-mail]>
Subject: Re: suggestion - multiple backends
Date: Friday, August 17, 2001 7:48 AM

Hi Phil,

here is what I did:

1. I changed the pa_lib.c and portaudio.h in order to provide a dll api 
  if wanted

2. in my application I had a couple of function pointers defined (see 
excerpt loadPA_DLL.cpp) that get their value when the dll is loaded

3. all other files that use the PortAudio-functions had the PaDllEntry.h 
included

I extracted the loadPA_DLL.cpp out of my source so I hope it's 
understandable somehow. If not feel free to ask.

There are also functions for checking if DirectX is available. I am not 
really sure if this is 100% correct, but I noticed that on NT systems it 
is missing the function no. 7 in the dsound.dll so I just check if it's 
there ;O) On the other hand this doesn't tell you if Dsound is emulated 
or not (Dsound gets really bad when emulated, but i suppose you know that).
Hope I didn't forget anything

cheers

tim

--
tim flohrer
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