Frank Yerrace wrote:
> We do it in order to
support legacy apps that
don't support multichannel hardware.
The API
layers do this
on your behalf. For example, the application can open stereo formats
using
waveOut regardless of how many channels the actual audio hardware has.
The
stereo data ends up being directed to the two output channels
identified as front-left
and front-right.
That's certainly the case. However, you may not necessarily want the
stereo data directed to those two output channels.
For instance, one of our boxes is a ten-output device - 8 analog and 2
digital. If an application wants to use all ten outputs, it seems
most efficient to expose that as a single 10-channel device.
However, if you want to play from an app that just sends out stereo
data (Windows Media Player, iTunes, many, many others) and want that
data to go to your S/PDIF output, the only solution is to have separate
wave devices.
It's an issue that's been around for as long as we've had WDM audio.
We've worked around it by allowing the user to choose their desired
configuration of wave devices.
Matt
******************
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.com/
|
