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Re: No dolby/DTS with DVD player?
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Re: No dolby/DTS with DVD player?


  • Subject: Re: No dolby/DTS with DVD player?
  • From: Jeff Moore <email@hidden>
  • Date: Mon, 27 Sep 2004 18:08:06 -0700

You could always start with the USB Audio class driver in Darwin. It already supports AC-3 on behalf of class compliant devices that support it (that would be the type III formats in the USB Audio class spec).

On Sep 27, 2004, at 5:54 PM, john wrote:

Hi Jeff,

Thanks for the reply! Can you point me to any sample code or documentation on writing a driver for a USB audio device? I am familiar with writing USB drivers but not about the audio specific parts or requirements.

-- John

For our DVD Player to send AC-3 data to your device, your device has to say it can handle it by having your driver advertise at least one available format whose format ID is kIOAudioStreamSampleFormatAC3.

Jeff Moore



--

Jeff Moore
Core Audio
Apple


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 >No dolby/DTS with DVD player? (From: john <email@hidden>)
 >Re: No dolby/DTS with DVD player? (From: Jeff Moore <email@hidden>)
 >Re: No dolby/DTS with DVD player? (From: john <email@hidden>)

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