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Re: AudioStreamBasicDescription ?
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Re: AudioStreamBasicDescription ?


  • Subject: Re: AudioStreamBasicDescription ?
  • From: William Stewart <email@hidden>
  • Date: Mon, 8 Mar 2004 17:47:32 -0800

Yes, they do still keep track of these 4CC:

http://developer.apple.com/dev/cftype/

Your codec's subtype would be this "format type"
Your codec's manufacturer type you should also register here as well.

Bill

On 08/03/2004, at 5:20 PM, Jeff Moore wrote:

> The usual guidelines for four char codes applies. Apple reserves all
> 4CCs that are made up of lowercase characters. The rest are up for
> grabs. DTS used to keep track of who registered which 4CCs for
> something, but I don't know if they still do that.
>
> On Mar 8, 2004, at 5:05 PM, Ken Hawkins wrote:
>
>> i see in making use of an AudioStreamBasicDescription that there is a
>> FormatID that i need to pass in. we are developing a new type for an
>> Audio Codec. what are the guidelines for defining a format ID to use
>> here? are there any?
>> i am really hesitant to just arbitrarily define a UInt32 for this.
>
> --
>
> Jeff Moore
> Core Audio
> Apple
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  • Follow-Ups:
    • Re: AudioStreamBasicDescription ?
      • From: Elliot sedegah <email@hidden>
References: 
 >AudioStreamBasicDescription ? (From: Ken Hawkins <email@hidden>)
 >Re: AudioStreamBasicDescription ? (From: Jeff Moore <email@hidden>)

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