Re: Published! Technical Note TN2274: USB Audio on the Mac
Re: Published! Technical Note TN2274: USB Audio on the Mac
- Subject: Re: Published! Technical Note TN2274: USB Audio on the Mac
- From: Alison Hughes <email@hidden>
- Date: Fri, 18 Jun 2010 13:16:06 -0700
On Jun 17, 2010, at 2:17 PM, Luigi Castelli wrote:
> That's amazing. Exactly what I was looking for.
I'm glad you are finding it helpful!
We've been working really hard on this driver over the past few years and this document should help developers take advantage of those enhancements. I've also tried to clarify areas that have caused confusion in the past.
> Do you know if a similar document exists for Firewire?
Not that I'm aware of, no.
--------------------
Alison Hughes
CPU Software Engineering (Audio)
Apple, Inc.
>
> Thanks.
>
> - Luigi
>
>
>
>
> --- On Thu, 6/17/10, Alison Hughes <email@hidden> wrote:
>
>> From: Alison Hughes <email@hidden>
>> Subject: Published! Technical Note TN2274: USB Audio on the Mac
>> To: "Alison Hughes" <email@hidden>
>> Date: Thursday, June 17, 2010, 10:24 AM
>> For USB audio device developers:
>>
>> I have published a comprehensive guide to developing class
>> compliant USB audio devices for the Mac here: http://developer.apple.com/mac/library/technotes/tn2010/tn2274.html
>>
>> Topics include:
>> - AppleUSBAudio class driver overview
>> - Supported USB Audio 1.0 & 2.0 features
>> - Engine/stream architecture, sample synchronous i/o
>> streams
>> - Endpoint synchronization types
>> - How to calculate max packet size
>> - How the driver determines what controls to publish
>> - Device originated status interrupts
>> - Descriptive naming of device/channels
>> - Ways to extend the class driver
>>
>> Please keep an eye on this tech note as we will continue to
>> update it with additional driver information and
>> enhancements as they become available.
>>
>> Thanks,
>> Alison
>>
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