Re: [Qemu-devel] Re: esd audio output patch and debuging.

[Peter Oberndorfer <kumbayo84@arcor.de>]

On Monday 04 September 2006 00:33, malc wrote:
> Frederick Reeve <cylix <at> solace.info> writes:
> 
> > 
> > Hello.
> >
> 
> [..snip..]
> 
> > 
> > Now, I would not have you thinking this patch is a ready to go.  I
> > am writing this email because I am having a little trouble with
> > this.  It outputs sound fine but it produces artafacts.  I'm not
> > sure of the cause.  Though I think it may have to do with frame
> > alignment or with the conversion process (see code).  It sounds like
> > its clipping at high sample volume but this is the first time I have
> > done anything with audio programing.  I had planed to submit a
> > completed patch but...  anyway if anyone can point me in the right
> > direction I would appreciate it.  Alternately if you just want to
> > fix it that would be great to.
> 
> Implemented the ideas described in previous post, latency is no good
> (something to be expected) but the quality seems to be fine now.
> 
> Fabrice: i think this can be safely applied.
> 
> --
> mailto:malc@pulsesoft.com

 
     if (info->sign) {
-        memset (buf, 0x00, len << info->shift);
+        memset (buf, len << info->shift, 0x00);
     }
     else {
         if (info->bits == 8) {
-            memset (buf, 0x80, len << info->shift);
+            memset (buf, len << info->shift, 0x80);
         }


This part looks wrong (swapped parameters)

Greetings Peter