[wdmaudiodev] Re: URL branding and KMixer dithering
- From: "Frank Yerrace" <frankye@xxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 6 Nov 2003 15:13:03 -0800
Unfortunately, this is a known defect in Windows XP.
Frank Yerrace
Microsoft Corporation
This posting is provided "AS IS" with no warranties, and confers no
rights.
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Daniel E. Germann
Sent: Thursday, November 06, 2003 1:32 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] URL branding and KMixer dithering
The DDK docs talk about Windows XP Control Panel Branding for a bitmap
that
goes in the audio device's property page and an icon that goes in the
Windows Mixer. I can set those values in the registry, and they work
great.
HKR,Branding,bitmap,,"device.dll,101"
HKR,Branding,icon,,"device.dll,100"
But there also seems to be a "url" value that (almost) changes the
device
name into a hotlink. The context help for this item on the audio
device's
property page seems to confirm this. If I set the URL branding value in
the
registry,
HKR,Branding,url,,"http://www.mycompany.com/";
it underlines the device name so it looks like a hotlink (and Spy++
shows it
as a control with a Class of SysLink and a Caption of "<A
HREF="http://www.mycompany.com/";>Product Name</A>"), but the hotlink
doesn't
seem to work. Am I missing something, or is this capability not really
implemented yet? I'm testing on Windows XP (no service packs or
hotfixes).
Also, I posted this message a week or so ago, and didn't get a reply, so
I
thought I'd give it one more shot.
If an application program uses the waveIn/waveOut APIs (or DirectSound
APIs,
for that matter) to open a WDM Audio wave device at 16 bits/sample, and
the
driver's DataRangeIntersection handler returns a 24-bit data format, I
believe KMixer does bit depth conversion to translate from the
application's
bit depth to the driver's (hardware's) bit depth. When this bit depth
conversion occurs, does KMixer do any sort of dithering, or does it just
pad
with 8 bits of 0 on output and truncate to 16 bits on input?
Thank you!
-Dan
******************
WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe:
mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
URL to WDMAUDIODEV page:
http://www.wdmaudiodev.de/
******************
WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
URL to WDMAUDIODEV page:
http://www.wdmaudiodev.de/
Other related posts:
