Re: Reading and writing from/to sound devices without AU
Re: Reading and writing from/to sound devices without AU
- Subject: Re: Reading and writing from/to sound devices without AU
- From: Rick Mann <email@hidden>
- Date: Wed, 09 Mar 2011 20:40:07 -0800
Yes, I think Audio Queues are exactly what I want. Thanks!
--
Rick
On Mar 9, 2011, at 20:34:42, Kyle Sluder wrote:
> On Mar 9, 2011, at 8:28 PM, Rick Mann <email@hidden> wrote:
>
>>
>> On Mar 9, 2011, at 20:17:13, Kyle Sluder wrote:
>>
>>> On Wed, Mar 9, 2011 at 8:12 PM, Rick Mann <email@hidden> wrote:
>>>> That's a thought. Still seems a little hackish.
>>>
>>> Oh, totally. I think the most architecturally sound solution is to use
>>> the bare minimum of audio-related code necessary to get the data off
>>> the device. You might not even need to stoop down to the Core Audio
>>> level; Audio Queues might be sufficient. Do your processing in
>>> whatever way is appropriate. Jump back into Core Audio when/if you
>>> want to play back the audible results of your processing.
>>
>>
>> That's what I was thinking was the best approach. I just didn't know what technologies/APIs to look into. You mention Audio Queues as maybe being sufficient, and imply they're not part of Core Audio. I had assumed whatever I wanted would be in Core Audio.
>
> Oops! I meant to say you don't need something as low level as Audio Units. Audio Queues are indeed part of Core Audio.
>
>>
>> And it looks like I do need something in Core Audio to play out the audible results?
>
> Yes. But CA is really a collection of APIs that operate at varying conceptual levels. As far as audio I/O goes, HAL is very low level. Audio Units and Graphs are higher. Audio Queues are higher still.
>
> It's also not the best-documented set of technologies on the platform. :-/
>
> --Kyle Sluder
>
>>
>>>
>>> --Kyle Sluder
>>
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