OS/2, eCS & ArcaOS - Technical > Hardware

Question about USB Audio (Input / Output).

<< < (8/9) > >>

Sean Casey:
See attached for the CM119.

Lars:
Thanks.

I can see from the descriptor dump that your CM6553 device supports an optional interrupt endpoint in the "Audio Control" interface.
It is optional (HW implementer does not need to implement it and CM119 does not implement it either) and is meant to return back status if a setting has been applied (volume, etc.).
It looks like it is largely useless (as most devices do not have that interrupt endpoint) but potentially, if it IS existent, you might need to deal with it.
What is needed is to set up an interrrupt transfer and once that transfer returns (a status is returned), read the status info and issue a specific command on the control endpoint to acknowledge the status/do some action.

Currently this is just a wild guess but since you are saying that you DO hear the proper sound (albait accompanied by a loud hiss) then maybe these status interrupts need to be acknowledged to get the device to work properly.
I'll talk to Wim.

Lars:

--- Quote from: Sean Casey on August 28, 2020, 07:03:02 pm ---Hi Lars,

My suggestion is for Martin to markup the device as not supported (or limited support).   If this is something you would like to support, I can test anything you send my way.

- Sean

--- End quote ---

I have a test driver ready. Where can I send it to ?

Sean Casey:
PM sent.

Martin Iturbide:
Hi

Today I tested the "HP Gaming Headset H320GS".

Audio output is working, and recording also work (tested with DTAPE), even that it records the audio too fast (I sound like a chipmunk).

I have a question about Wim's Audio Recorder. I noticed on the readme that you need to run it like "record /a1 /b16 /c1 /f44100" (it works fine that way with my laptop internal mic), but how an USB mic should be tested with "Audio Recorder"?

Regards

Navigation

[0] Message Index

[#] Next page

[*] Previous page

Go to full version