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Re: Compressed stream driver
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Re: Compressed stream driver


  • Subject: Re: Compressed stream driver
  • From: Phil Montoya <email@hidden>
  • Date: Fri, 9 Jun 2006 15:21:24 -0700

I'll try again. We have hardware capable of passing a Dolby Digital AC3 stream. Now is it possible to pass the AC3 compressed audio directly up the core audio device chain from the IOAudioEngine. I see in the IOAudioStreamFormat struct the fSampleFormat can be set to kIOAudioStreamSampleFormatAC3. Is this all that is necessary then the time stamping remains the same and happens each time our audio buffer fills up with compressed data? Maybe it is trivial and I'm thinking this is harder than it is.

-Phil


On Jun 6, 2006, at 10:39 AM, Phil Montoya wrote:

Can one create a core audio driver to handle compressed audio streams natively (ie, AC3 dolby). If so were do I find information on how to do this?

-Phil
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  • Follow-Ups:
    • Re: Compressed stream driver
      • From: Jeff Moore <email@hidden>
References: 
 >How to get an instance's UI to redraw when Setting kAudioUnitProperty_ClassInfo (From: "B.J. Buchalter" <email@hidden>)
 >Compressed stream driver (From: Phil Montoya <email@hidden>)

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