<div dir="ltr">Eric,<br><br>I was hoping to use a packed format like ByteString eventually. Right now, I want to get everything working nicely. As it stands, I end up marshaling a lot of information into/out of arrays which I'd much rather keep as a block of memory.<br>
<br>I'm guessing that some sort of unboxed array would be close to what I want. If you have suggestions, I'm more than open to them. (This is my first attempt at writing a library.)<br><br>/jve<br><br><div class="gmail_quote">
On Sun, Aug 24, 2008 at 1:06 PM, Eric Kidd <span dir="ltr"><<a href="mailto:haskell@randomhacks.net">haskell@randomhacks.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="Ih2E3d">On Sun, Aug 24, 2008 at 12:41 PM, John Van Enk <<a href="mailto:vanenkj@gmail.com">vanenkj@gmail.com</a>> wrote:<br>
> It implements the Haskell bindings to the PortAudio library. This is the<br>
> library behind Audacious. I *have not* implemented the callback model yet,<br>
> but I plan to do that.<br>
><br>
> Perhaps this will be something which is useful to you?<br>
<br>
</div>Looks like a great binding! We actually use portaudio in callback mode<br>
at work, with reasonable success (from C++).<br>
<br>
One question: I notice that your writeStream function represents audio<br>
using '[[a]]'.<br>
<br>
writeStream :: (Storable a) => PaStream a -- ^ The output stream<br>
-> [[a]] -- ^ The samples to be played<br>
-> Int -- ^ Number of frames<br>
-> IO (Either String ErrorCode) -- ^ The return status<br>
of the write<br>
<br>
In my experiments, I've been somewhat unsatisfied with the performance<br>
of '[[a]]' as an audio format. Would you be interested in also<br>
supporting an array-based format for audio data?<br>
<br>
I'm currently converting my program to use HCodec's Data.Audio<br>
representation, which looks pretty promising. I don't know how it<br>
performs yet, but I'll let you know.<br>
<br>
Thank you for the pointer to your library! It will make an excellent<br>
addition to the available Haskell sound libraries.<br>
<br>
Cheers,<br>
<font color="#888888">Eric<br>
</font></blockquote></div><br><br clear="all"><br>-- <br>/jve<br>
</div>