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Re: MPEG CoreAudio Support - When ?
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Re: MPEG CoreAudio Support - When ?


  • Subject: Re: MPEG CoreAudio Support - When ?
  • From: Adrian Bourke <email@hidden>
  • Date: Sat, 11 Feb 2006 16:24:12 -0800

G'day,

Thanks for your resposne, I appreciate the time taken.

The only problem with using libavcodec is no one is covering the licensing payments or providing indemnification for any future licensing payments that may occur.

By using in the pre-installed codec that comes with Mac OS X and QuickTime, one does not need to ship such technology and therefore needs not to deal with such licensing issues (unless there are commercial deals, etc).

Adrian

On 2/11/06, Jean-Francois Roy <email@hidden> wrote:
I don't know if you've solved your problem already, but I had the
same one a little while ago and solved it by using libavcodec from
the ffmpeg project to decompress MPEG 1/2 Audio Layer I/II elementary
streams.

ffmpeg is under the LGPL, so the code also handles dynamic loading of
the library from a dylib.

Also, I didn't really like the complexity of libavformat (the mux /
demux library), thus I wrote simple framing routines as well.

https://zohar.dyndns.org:47806/svn/mhk/MHKMP2Decompressor.m
https://zohar.dyndns.org:47806/svn/mhk/MHKMP2Decompressor.h

Feel free to adapt the code to your needs.

On 6-Feb-06, at 19:01, Adrian Bourke wrote:

> Question to the CoreAudio team:
>
> When will MPEG 1/2 Layer I/II audio decoding support make it into
> CoreAudio ?
>
> Thanks.
>
> Adrian
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Jean-Francois Roy

--
Co-Founder of MacStorm

http://www.macstorm.org
http://www.devklog.net
email@hidden

http://www.macstorm.org/bahamut/Jean-Francois.gpgkey





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  • Follow-Ups:
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References: 
 >MPEG CoreAudio Support - When ? (From: Adrian Bourke <email@hidden>)
 >Re: MPEG CoreAudio Support - When ? (From: Jean-Francois Roy <email@hidden>)

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