Re: How to find build-in system output device?
Re: How to find build-in system output device?
- Subject: Re: How to find build-in system output device?
- From: Jeff Moore <email@hidden>
- Date: Tue, 20 Jul 2004 12:54:33 -0700
If I understand the situation, there is a USB device (or model of USB
device), that has some faulty hardware. Upon detection of this faulty
hardware, the desired behavior is to prevent the system from using that
part of the hardware, but keep using the rest of the hardware.
Mr. Duncan's assessment is correct. This is a job for the driver.
That's the only place in the system that has the global view of the
hardware. It has the final say over whether a stream is present or not
for the device.
I imagine that if this is a class compliant device, that you could make
some simple modifications to our existing class driver to do what you
want.
On Jul 20, 2004, at 7:34 AM, David Duncan wrote:
On Jul 20, 2004, at 10:15 AM, Rustam Muginov wrote:
You mean - change the hardware, right?
No, unfortunatly. I have to support this model "as-is", its already
in the
production and in the stores.
Are their multiple variants of this hardware some with and some
without the output support? Will there be a model with output in the
future? It seems to me that since you are writing the driver for the
hardware, if you know that a specific model reports but doesn't
actually have output that you can disable the output in your driver
and that future hardware can be fixed so that this isn't an issue.
Since you say this is existing hardware, what is done under other OSes
that this hardware is supported on?
--
Reality is what, when you stop believing in it, doesn't go away.
Failure is not an option. It is a privilege reserved for those who try.
David Duncan
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.
--
Jeff Moore
Core Audio
Apple
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.