[wdmaudiodev] Re: HDAudio Verb Communication from GFX sAPO
- From: ambrish dantrey <a4ambrish@xxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 15 May 2013 03:17:13 +0530
If you just want to change HW settings for debugging, you can use Immediate
Command Output Interface (ICOI) from HDA specifications. You may also
consider using High Definition Audio Utility from MS:
http://msdn.microsoft.com/en-us/library/windows/hardware/gg462977.aspx
Thanks and regards,
Ambrish
On Wed, May 15, 2013 at 1:03 AM, Preston Fick <pffick@xxxxxxxxx> wrote:
> I should note that I am by no way planning that this will be part of
> production code - I'm looking for an easy way to debug an issue in the
> sound processing, which could be related to a hardware setting (suspected)
> or could be related to post processing in the chain after my GFX APO.
>
> Kind Regards -
> Preston
>
>
> On Tue, May 14, 2013 at 11:30 AM, Tim Roberts <timr@xxxxxxxxx> wrote:
>
>> Preston Fick wrote:
>> >
>> > Does anyone have experience with the following IOCTL:
>> >
>> > IOCTL_AZALIABUS_SENDVERBS
>> > (
>> http://msdn.microsoft.com/en-us/library/windows/hardware/ff536233(v=vs.85).aspx
>> > <
>> http://msdn.microsoft.com/en-us/library/windows/hardware/ff536233%28v=vs.85%29.aspx
>> >)
>>
>> There's an interesting cut-and-paste failure in the example on that page:
>>
>> To initiate communication with the audio codec, the class driver
>> calls the DeviceIoControl function with the
>> following parameters:
>> BOOL DeviceIoControl(
>> (HANDLE) hDevice,
>> IOCTL_STORAGE_GET_MEDIA_SERIAL_NUMBER,
>>
>> I'm pretty sure you aren't ever going to be sending IOCTL_STORAGE ioctls
>> to an audio codec. I'll send a doc update about this.
>>
>> --
>> Tim Roberts, timr@xxxxxxxxx
>> Providenza & Boekelheide, Inc.
>>
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>
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