Re: Actual Stream vs. Physical Stream ?
Re: Actual Stream vs. Physical Stream ?
- Subject: Re: Actual Stream vs. Physical Stream ?
- From: Jeff Moore <email@hidden>
- Date: Thu, 20 Dec 2001 11:28:24 -0800
on 12/20/01 6:29 AM, Jim Dolan <email@hidden> wrote:
>
So basically when I encounter a device like this, I should just loop through
>
the list of rates my app is happy with and take the first one the device
>
agrees with?
Yeah, that's pretty much it.
>
What do I do about the physical device?
The only real difference between real and actual is the sample format for
linear PCM data (it is always 32 bit native endian floating point regardless
of what the device is actually outputting). Otherwise, they are the same,
especially for the sample rate.
>
I notice in Daisy that the sample rate displayed for the actual and physical
>
match whatever was chosen last, independent of the actual menu selection.
Daisy doesn't have the any code for initially matching it's format pop-ups
with what the device is at when it starts up. That's why they are usually
not correct until you change the format and can get out of synch if the
format changes outside of Daisy. The textural display of the current values
should always be correct though.
--
Jeff Moore
Core Audio
Apple